News information

2025-10-13

Fangkuai Sets Off Again | Three 58MW Hot Water Boilers Shipped Completely to Tianjin

This morning, the Fangkuai Boiler Production Base completed the acceptance inspection for three 58MW large-scale water-tube hot water boilers, officially shipping them to a large-scale heating project in Tianjin! These boilers will serve as the core heat source for the district heating system, bringing warmth, stability, and efficiency to local residents.

What Makes Fangkuai So Popular?

Modularized, Completely Packaged Products Save Time, Effort, and Cost

Fangkuai breaks away from the traditional bulk delivery model, employing advanced modular design and complete packaged technology. The boiler body, system piping, and insulation structure are all prefabricated and assembled in-house, significantly reducing on-site installation time and labor costs. Transport is convenient, and docking is efficient, ensuring "on-site piping connection and rapid commissioning."

Tailor-Made, Worry-Free Lifecycle Service

From solution selection and design and manufacturing to installation and commissioning and after-sales service, Fangkuai Boiler provides one-stop customized solutions. We deeply understand our customers' actual needs and ensure that each boiler is perfectly matched to the application scenario, ensuring stable and reliable system operation. Fangkuai not only provides heat sources, but also delivers value.
We understand that behind every boiler project lies the user's desire for warmth, stability, and energy efficiency.
Based on technology and focused on service, Fangkuai continuously creates tangible benefits for users nationwide and globally through product innovation and service upgrades.
The three 58MW boilers shipped to Tianjin once again demonstrate Fangkuai's technical strength and delivery capabilities in the field of large-scale heating equipment.
Going forward, we will continue to uphold quality and strive for innovation, providing more users with clean, efficient, and intelligent boiler system solutions!

Fangkuai Sets Off Again | Three 58MW Hot Water Boilers Shipped Completely to Tianjin

This morning, the Fangkuai Boiler Production Base completed the acceptance inspection for three 58MW large-scale water-tube hot water boilers, officially shipping them to a large-scale heating project in Tianjin! These boilers will serve as the core heat source for the district heating system, bringing warmth, stability, and efficiency to local residents.

What Makes Fangkuai So Popular?

Modularized, Completely Packaged Products Save Time, Effort, and Cost

Fangkuai breaks away from the traditional bulk delivery model, employing advanced modular design and complete packaged technology. The boiler body, system piping, and insulation structure are all prefabricated and assembled in-house, significantly reducing on-site installation time and labor costs. Transport is convenient, and docking is efficient, ensuring "on-site piping connection and rapid commissioning."

Tailor-Made, Worry-Free Lifecycle Service

From solution selection and design and manufacturing to installation and commissioning and after-sales service, Fangkuai Boiler provides one-stop customized solutions. We deeply understand our customers' actual needs and ensure that each boiler is perfectly matched to the application scenario, ensuring stable and reliable system operation. Fangkuai not only provides heat sources, but also delivers value.
We understand that behind every boiler project lies the user's desire for warmth, stability, and energy efficiency.
Based on technology and focused on service, Fangkuai continuously creates tangible benefits for users nationwide and globally through product innovation and service upgrades.
The three 58MW boilers shipped to Tianjin once again demonstrate Fangkuai's technical strength and delivery capabilities in the field of large-scale heating equipment.
Going forward, we will continue to uphold quality and strive for innovation, providing more users with clean, efficient, and intelligent boiler system solutions!

2025-10-13

NEW

Operational Case Study of a 65T Medium-Temperature, Medium-Pressure Hydrogen Boiler in the Chemical

Hydrogen boilers are
The key to increasing the value of "carbon assets"
Face the pressure of the "dual carbon" targets? Fangkuai helps you easily meet them!
A life-or-death test in the environmental storm
EU carbon tariffs have officially been settled, and domestic carbon quotas are tightening rapidly—the "environmental noose" tightening on energy-intensive industries. As traditional boiler flue gas rolls in, accompanied by carbon emission costs, chemical companies are about to be saddled with a massive carbon debt!

From an environmental burden to an energy gold mine

For example, in the production of chlor-alkali and isobutane, hydrogen is produced as a byproduct. Although its purity exceeds 99.9%, it is difficult to store and use due to safety risks, forcing it to be discharged or exported. But venting waste means wasting resources and increasing carbon emissions, while exporting means significantly reducing transportation costs.

Innovative Technology

The Concept of Turning Byproducts into Treasures


It's a shame to waste it.

Fangkuai, based on customer needs, uses hydrogen as a power source.

With "green intelligent manufacturing" at its core,

Shaping a new blueprint for low-carbon transformation!

When "thermal power experts" meet "chemical magicians,"

Fangkuai's customized hydrogen boilers convert "hazardous waste gases" into zero-carbon steam. With ultra-low nitrogen emissions and safe hydrogen combustion technology, they help reduce carbon emissions and recreate a green profit engine. This is not only a boiler revolution, but also a key leap in the evolution of Chinese manufacturing towards a "zero-carbon gene."

Hydrogen boilers ignite a new engine for green transformation.


Turning Waste into Treasure

When chemical byproduct hydrogen goes from a "hot potato" to a clean fuel, Fangkuai boilers use core technology to solve the challenges of safety and energy efficiency. Combusting it as fuel in medium-temperature, medium-pressure boilers, they help the chemical industry achieve a win-win revolution: directly reducing steam costs and sharply reducing carbon emissions. This is not only a benchmark practice in energy recycling, but also a proactive move towards a "dual-carbon" future!

When carbon costs become a lifeline for businesses

Fangkuai doesn't just sell boilers; it's becoming a zero-carbon "standard definer," redefining the future of zero-carbon steam.
Starting with Fangkuai hydrogen boilers, a hydrogen-powered manufacturing revolution is accelerating...

2025-09-15

NEW

Innovation Never Stops, Fangkuai Earns Another Invention Patent

Fangkuai Honors

Wins Another Invention Patent

Brilliant Glory, Continuing to Write a Brilliant Chapter

Striving for "Innovation" and "Quality"

Focusing on Cutting-Edge Technologies

Creating New Momentum and New Advantages

Promoting the Continuous "Innovation" of New-Quality Productivity

On June 17th, our company was awarded another national invention patent. To date, the company has secured 162 national patents and 13 invention patents, and has been deeply involved in the formulation of eight national and industry standards. We continue to lead industry development with technological breakthroughs.

Overcoming challenges and achieving remarkable results

Attaching great importance to technological innovation

While pursuing superior quality, Fangkuai also attaches great importance to technological innovation.

Developing product diversity

To better meet the diverse needs of consumers, Fangkuai develops diverse product images during R&D and production.

Fangkuai family portrait


Gloriously writing a new journey

The company has always adhered to the philosophy of

"Building Character, Creating Quality Products"

Using technological R&D as the core driving force

Also promoting application

Effectively promoting technological advancement in the industry and engineering products

Future

Continued

Scientific and technological R&D and technological achievement transformation

Generate more core independent intellectual property rights

Solidly promote the company's high-quality development

2025-08-11

NEW

How Much Does a New Steam Boiler Cost? 2025 Latest Price Guide

A steam boiler is one of the most essential pieces of equipment in industrial, commercial, and even residential systems. It provides the steam or hot water needed for power generation, manufacturing, or space heating. However, when upgrading or installing a new one, the common question is: how much does a new steam boiler cost?

steam boiler cost

This 2025 guide explains everything — from average boiler prices, installation fees, and operational costs to key factors that affect the total investment and how to choose the right model for your needs.

1. Average Cost of a New Steam Boiler in 2025

The price of a new steam boiler depends on size, fuel type, pressure, and manufacturer. Here are typical cost ranges:

industrial boiler

Small-capacity units are cheaper, while industrial systems with higher output and automation cost more. For example:

2. Breakdown of Total Investment

The boiler unit price is only part of the total cost. Below is a breakdown of typical expenses:

Cost Item Estimated Share
Boiler Equipment 60–70%
Installation & Commissioning 10–20%
Piping & Valves 5–10%
Electrical & Control Systems 5–8%
Transportation & Taxes 3–5%

If the boiler itself costs $50,000, the total installed cost may reach $60,000–$70,000 depending on location and site conditions.

new steam boiler

3. Key Factors Affecting Steam Boiler Prices

a. Boiler Type

  • Fire Tube Boilers: Affordable and simple, suitable for low-to-medium pressure.
  • Water Tube Boilers: Higher cost, higher pressure, better efficiency.
  • Electric Boilers: Clean and compact, but rely on power prices.
  • Biomass Boilers: Renewable and eco-friendly, higher upfront cost.

b. Fuel Type

  • Natural gas: Efficient and low emission.
  • Diesel or oil: Reliable but costly fuel.
  • Biomass: Sustainable and cheaper per kWh.
  • Electricity: Zero on-site emissions, high operating cost.

c. Capacity and Pressure

Larger capacity and higher working pressure mean stronger materials and design, which raise the price.

d. Brand and Material

Top brands like Bosch, Miura, Cleaver-Brooks, and Fangkuai offer advanced features and long service life, usually costing 10–30% more.

e. Automation Level

Boilers with PLC control systems, touch panels, and remote monitoring enhance safety and efficiency, but increase initial investment.
water tube boiler

4. Operating and Maintenance Costs

After purchase, operational and maintenance costs are crucial. The main expenses include:

  • Fuel cost: The largest portion of total expenses.
  • Water treatment: Prevents corrosion and scale buildup.
  • Regular maintenance: Cleaning and inspection.
  • Electricity consumption: Fans, pumps, and control systems.

For example, a 10-ton gas boiler can consume 700–1,000 m³ of gas per hour. A more efficient boiler (95% vs. 80%) can save thousands annually.

5. Comparison by Fuel Type

Boiler Type Fuel Price Range (USD) Efficiency Advantages Disadvantages
Gas Fired Natural Gas $8,000–$40,000 High Clean, efficient, low emissions Gas supply required
Oil Fired Diesel / Heavy Oil $10,000–$50,000 Medium Stable, strong output High fuel cost
Biomass Fired Wood Pellets / Husk $15,000–$80,000 High Renewable, eco-friendly Large storage space
Electric Electricity $5,000–$20,000 Very High Silent, zero emissions High power cost

6. How to Choose the Right Steam Boiler

When selecting a new steam boiler, consider the following:

  • Steam demand: Calculate capacity and pressure needs accurately.
  • Fuel availability: Choose a stable and affordable fuel source.
  • Installation space: Biomass units need more room; electric boilers need high voltage.
  • Emission regulations: Select models meeting local environmental standards.
  • After-sales support: Ensure reliable maintenance and spare parts.

7. Ways to Reduce Steam Boiler Costs

  • Use high-quality insulation to reduce heat loss.
  • Install economizers to recover exhaust heat.
  • Automate control systems for precise load adjustment.
  • Clean burners and tubes regularly.
  • Work with local suppliers to cut logistics expenses.

8. Conclusion

The cost of a new steam boiler in 2025 ranges from $3,000 to over $100,000. The exact price depends on size, type, and efficiency. A well-chosen boiler can save significant fuel and maintenance costs over time.

For industrial users, investing in a high-efficiency boiler brings long-term benefits in performance, energy savings, and compliance with emission standards.

9. Get a Free Steam Boiler Quote

Looking for a reliable steam boiler for your plant or factory? Contact us today to get a customized boiler solution that fits your capacity, fuel, and budget needs. Our engineering team can help you compare gas, oil, electric, and biomass boilers and recommend the most efficient option for your operation. WhatsApp: +8613838529852

Get a Free Boiler Quote →

2025-10-20

How to Improve Steam Boiler Performance: Expert Maintenance Tips

Steam boilers are the backbone of many industrial operations, providing the heat and power needed for manufacturing, process heating, and facility services. Maintaining optimal steam boiler performance reduces fuel costs, prevents downtime, and extends equipment life. This guide collects expert maintenance tips that are practical, actionable, and proven to improve boiler efficiency.

Understanding Steam Boiler Performance

Steam boiler performance is a measure of how effectively a boiler converts fuel energy into useful steam. Key performance indicators include fuel-to-steam ratio, steam quality, stack temperature, and stability under load. Several factors influence performance: fuel quality, water chemistry, load profile, combustion control, and maintenance practices.

Key Factors That Affect Performance

  • Fuel quality — Poor fuel increases deposits and decreases combustion efficiency.
  • Water quality — Scale and corrosion reduce heat transfer and cause failures.
  • Boiler load — Frequent low-load operation or cycling lowers efficiency.
  • Combustion settings — Incorrect air–fuel ratio leads to wasted fuel.
  • Maintenance frequency — Neglect accelerates deterioration and energy loss.

Common Problems That Reduce Boiler Efficiency

Before optimizing, identify the usual suspects that degrade steam boiler performance:

Scale and Soot Buildup

Deposits on heat transfer surfaces act as insulation and force higher fuel use to achieve the same steam output.

Corrosion and Poor Water Chemistry

Oxygen, carbon dioxide and aggressive pH can corrode tubes and drums, causing leaks and heat transfer loss.

Leaky Steam Traps and Valves

Steam leaks waste energy and lower available pressure for processes and heating.

Inadequate Insulation

Uninsulated piping and vessel surfaces dissipate heat to the environment rather than delivering useful energy.

Poor Combustion Control

An improper air–fuel mixture leads to incomplete combustion, higher flue temperatures and increased fuel consumption.

Expert Maintenance Tips to Improve Steam Boiler Performance

Implement the following expert recommendations to boost performance and reliability.

1. Maintain Proper Water Treatment

Effective water treatment prevents scale, corrosion and foaming—major causes of degraded performance. Use softeners, deaerators and chemical dosing tailored to your feedwater source. Regularly test pH, conductivity, hardness and dissolved oxygen.

2. Schedule Routine Cleaning and Inspections

Remove soot and scale from tubes and heat surfaces on a scheduled basis. Inspect burners, safety valves, gaskets and refractory. Early detection of wear or deposits prevents efficiency loss and unplanned outages.

3. Optimize Combustion Settings

Tune burners and balance air supply to achieve complete combustion. Use oxygen trim systems or stack gas analyzers to monitor excess oxygen and CO levels and adjust the air–fuel ratio for lowest fuel use and emissions.

4. Improve Steam and Condensate Management

Repair leaking traps and valves, and maximize condensate return. Reusing hot condensate reduces makeup water and preheats feedwater, cutting fuel demand.

5. Insulate Piping and Boiler Surfaces

Quality insulation reduces radiant and conductive heat loss. Inspect insulation regularly for damage and moisture ingress, replacing or repairing as needed.

6. Implement Preventive and Predictive Maintenance

Use a preventive schedule for blowdown, filter replacement, and component checks. Deploy predictive tools—vibration sensors, thermography, and IoT monitoring—to catch deviations before they cause inefficiency.

Upgrades and System Improvements

Consider capital improvements that deliver measurable efficiency gains:

  • Economizers — Recover flue gas heat to preheat feedwater.
  • Variable Speed Drives (VSD) — Match pump and fan speeds to load, reducing electrical and fuel use.
  • Modern Control Systems — Advanced automation keeps combustion and load control within optimal ranges.
  • Condensate Recovery — Capture and reuse condensate to save water and energy.

Measuring and Tracking Performance

Track relevant KPIs to quantify improvements and find new opportunities:

  • Fuel-to-steam ratio (kg fuel per tonne steam)
  • Stack temperature (indicates heat loss)
  • Blowdown rate (affects water chemistry and loss)
  • Steam pressure and quality

Use data logging and periodic energy audits to benchmark and validate upgrades or maintenance actions.

Environmental and Cost Benefits

Improved steam boiler performance reduces CO₂ emissions and operating costs. Efficient boilers consume less fuel, lower maintenance expense, and contribute to corporate sustainability goals and regulatory compliance.

Practical Implementation Tips

  • Start with a baseline energy audit to identify the biggest losses.
  • Create a prioritized action list: quick wins (trap repairs, insulation) vs. long-term investments (economizers, control upgrades).
  • Train operators on best practices and encourage consistent record-keeping.
  • Engage qualified service providers for specialized tasks (combustion tuning, water treatment design).

Conclusion

Boosting steam boiler performance requires a combination of proper water treatment, regular cleaning, combustion optimization, and targeted system upgrades. A disciplined maintenance program—including preventive and predictive activities—yields reliable steam, lower fuel use, and longer equipment life. For industrial facilities, investing in boiler performance is a high-return strategy that pays off in reduced costs and improved sustainability.

2025-10-15

Common Steam Boiler Problems and How to Fix Them

A steam boiler is one of the most vital components in industrial and commercial heating systems. From manufacturing plants to hospitals, steam boilers provide the necessary steam for heating, sterilization, and process applications. However, even the most efficient steam boiler systems can face operational issues over time. Understanding these common problems—and how to fix them—can save you downtime, reduce repair costs, and extend your boiler’s lifespan.

This guide explains the most frequent steam boiler problems, their causes, and practical solutions to keep your system running efficiently and safely.


Understanding How a Steam Boiler Works

A steam boiler converts water into steam by heating it through a fuel source such as gas, oil, or coal. The produced steam is then distributed through pipes for various industrial or heating purposes.

Key Components Include:

  • Burner: provides the heat source.
  • Pressure vessel: holds and converts water into steam.
  • Feedwater system: supplies water to the boiler.
  • Control system: regulates temperature and pressure.

By understanding how these components function together, it becomes easier to identify where problems originate when the boiler isn’t working properly.


1. Low Steam Pressure

Low steam pressure is a common problem that affects system performance.

Possible Causes:

  • Fuel supply issues or clogged burners
  • Steam leakage within the system
  • Faulty pressure control settings

Fix:

Inspect and clean the burner, repair any visible leaks, and recalibrate pressure controls.

Prevention tip: Regularly monitor pressure gauges and fuel delivery systems to maintain stable steam output.


2. Water Leaks

Leaks can occur in pipes, valves, or the boiler shell.

Causes:

  • Aging metal components
  • High operating pressure
  • Worn-out gaskets or seals

Fix:

Locate the leak, replace the faulty component, and ensure the system operates within safe pressure limits.

Prevention: Conduct frequent inspections and pressure tests to detect issues early.


3. Boiler Not Producing Steam

When a steam boiler stops generating steam, it usually means there’s a problem with the fuel system, ignition, or water level.

Fix:

  • Check the water level control system
  • Ensure the burner is igniting properly
  • Verify that all safety interlocks are functional

Tip: Maintain a consistent water supply and keep ignition components clean.


4. Strange Noises or Vibrations

Unusual noises—such as banging or hissing—may indicate air trapped inside the boiler, water hammer, or scale buildup.

Fix:

Bleed air from the system, flush out mineral deposits, and balance the feed pump.

Prevention: Use treated water and perform routine descaling to keep your steam boiler running quietly and smoothly.


5. Water Level Fluctuations

Inconsistent water levels can lead to poor steam quality or even boiler damage.

Fix:

Inspect the level sensors and automatic feedwater system. Clean or replace malfunctioning components.

Tip: Test water-level controls every few months to ensure accurate readings.


6. Excessive Fuel Consumption

If your steam boiler is consuming more fuel than usual, efficiency may have dropped.

Causes:

  • Incomplete combustion
  • Dirty heat transfer surfaces
  • Poor insulation

Fix:

Clean the heat exchanger, check air-to-fuel ratio, and upgrade to energy-efficient insulation.

Prevention: Schedule regular efficiency audits to detect and correct fuel waste early.


7. Boiler Short Cycling

Short cycling occurs when the steam boiler frequently turns on and off.

Causes:

  • Oversized boiler
  • Improper pressure settings
  • Faulty sensors

Fix:

Recalibrate the pressure control system and match boiler capacity with system load.

Prevention: Have a professional technician assess your setup to optimize boiler sizing and controls.


8. Scaling and Corrosion

Mineral deposits and corrosion are two major enemies of steam boiler efficiency.

Fix:

Implement a proper water treatment plan that includes softening and chemical dosing.

Prevention: Inspect boiler tubes regularly for signs of rust or scale buildup and clean them as needed.


9. Steam Leakage and Condensate Issues

Leaking steam reduces pressure and wastes energy.

Fix:

Repair faulty joints or valves and ensure condensate return lines are properly maintained.

Tip: Insulate pipes to prevent heat loss and increase efficiency.


10. Control System Malfunctions

A malfunctioning control system can lead to unsafe operation or reduced efficiency.

Fix:

Check electrical wiring, recalibrate sensors, and replace any damaged modules.

Prevention: Schedule professional inspections at least twice a year.


How to Prevent Common Steam Boiler Problems

Preventing problems is easier—and cheaper—than fixing them. Follow these best practices:

  • Conduct routine inspections
  • Use clean, treated water
  • Keep detailed maintenance records
  • Test safety valves and controls regularly
  • Hire certified technicians for annual servicing

Proactive maintenance helps your steam boiler operate safely, efficiently, and for many years.


When to Call a Professional Technician

Some boiler issues—like pressure irregularities or structural cracks—require expert attention.

Call a qualified technician when:

  • You notice recurring pressure drops
  • The boiler fails to ignite
  • You detect water leaks from the pressure vessel
  • Safety devices malfunction

A professional can diagnose hidden issues and perform precise repairs to prevent costly downtime.


Conclusion

A steam boiler is a complex yet essential system in many industries. Understanding its common problems—like low pressure, leaks, or scaling—can help you maintain peak efficiency and safety. By performing regular maintenance, addressing small issues early, and consulting professionals when needed, you can ensure your steam boiler runs smoothly, saves energy, and lasts for years to come.
WhatsApp: +8613838529852

2025-10-13

58MW Hot Water Boiler Technical Analysis: A Comprehensive Guide from Principle to Application

1. Core Definition and Heating Capacity

A 58MW hot water boiler is a large-scale thermal energy device with a rated heating capacity of 58 megawatts. According to standard calculations, it can generate 58,000,000 kilojoules of heat per hour. Based on the estimated heating area, it can cover approximately 580,000 square meters (simplified calculation, assuming 1MW heating capacity per 10,000 square meters). This device is widely used in central heating systems in northern China, heat source stations in industrial parks, and large public buildings (such as hospitals and schools).

2. Technical Classification and Typical Boiler Types

Based on fuel type, 58MW hot water boilers can be divided into four categories, each corresponding to different application scenarios:

Gas-fired hot water boilers
Representative models: SZS58-1.6/130/70-Q
Parameters: Rated pressure 1.6MPa, outlet water temperature 130°C, return water temperature 70°C
Fuel compatibility: Clean gas fuels such as natural gas, biogas, and liquefied petroleum gas
Technical Advantages: Utilizing full-membrane water-cooled wall technology, the furnace chamber maintains excellent sealing, with an outer wall temperature below 35°C (within +10°C of ambient temperature), minimizing heat loss. Equipped with a PLC/DCS control system, the boiler offers a load adjustment range of 30%-110%, supporting rapid start and stop operations to adapt to fluctuating heating demand. Coal-fired Hot Water Boiler
Representative Models: DZL58-1.25/130/70-AⅡ, DHL58-1.6/150/90-AⅡ
Parameters: Pressure 1.25-1.6 MPa, Water Outlet Temperature 130°C-150°C
Fuel Compatibility: Bituminous coal, anthracite, lean coal, and other solid fuels
Innovative Design: Shanxi Lantian Environmental Protection's vertical boiler utilizes a dual-furnace design with a folded flue gas pipe, saving 30% steel, reducing system resistance, and lowering power consumption. The swirl burner is located on the furnace sidewall to prevent the flame from eroding the water-cooled wall. The slag discharge port is optimized for smooth slag discharge. Biomass Hot Water Boiler
Representative Model: DZL58-1.25/130/70-SCⅢ
Parameters: Pressure 1.25 MPa, Outlet Water Temperature 130°C
Fuel Compatibility: Renewable fuels such as biomass pellets, wood chips, and straw
Environmental Benefits: Utilizes fluidized bed combustion technology for wide fuel compatibility, with nitrogen oxide emissions ≤30 mg/Nm³, meeting ultra-low emission standards.
Circulating Fluidized Bed Hot Water Boiler
Representative Models: SHX58-1.25/130/70-AⅠ, QXX58-1.25/130/70-AⅡ
Parameters: Pressure 1.25 MPa, Outlet Water Temperature 130°C
Technical Highlights: Gas-solid two-phase fluidized combustion offers excellent fuel compatibility, including the ability to blend low-calorific-value fuels such as gangue and sewage sludge. The H-shaped finned tube tail heating surface design ensures an exhaust temperature ≤90°C and a thermal efficiency ≥95%.

3. Key Performance Indicators and Optimization Directions

Thermal Efficiency and Combustion Control
Testing Standards: Complete combustion is achieved when the CO content in flue gas is ≤50 ppm and the O₂ content is ≤3.5%; nitrogen oxide emissions must be ≤30 mg/Nm³ (stricter requirements apply in some regions).
Energy-Saving Technologies: Lightweight fiber furnace wall insulation (external wall temperature ≤45°C), optimized economizer layout (increased heating surface), and intelligent combustion control system (full proportional control + ultraviolet flame detection).
Operational Stability and Safety
Pressure Control: The boiler body design pressure is ≥1.6 MPa, equipped with a pressure safety valve and water level monitoring device to prevent dry burning or overpressure.
Noise Control: Noise level ≤50 dB(A) at 1 meter from the equipment, meeting urban environmental noise standards.
Economics and Maintenance Costs
Energy Consumption Comparison: Gas-fired boilers consume approximately 2500 kWh/hour. Coal-fired boilers have lower operating costs due to lower fuel prices, but dust removal and desulfurization costs must be considered. Maintenance Cycle: Circulating fluidized bed boilers require regular cleaning of the fluidized bed air distribution plates, while gas-fired boilers require less frequent maintenance, primarily involving burner overhaul.

4. Typical Application Cases

Xinbarag Right Banner Heating Project, Inner Mongolia
Equipment Model: 58MW Circulating Fluidized Bed Hot Water Boiler
Application Results: By blending 30% coal gangue, fuel costs were reduced by 25%, exhaust temperature was controlled at 85°C, and thermal efficiency reached 94%.
Heat Source Station in an Industrial Park in Dalian
Equipment Model: SZS58-1.6/130/70-Q Gas-Fired Boiler
Application Results: Fully automated control is used, with a load adjustment response time of ≤30 seconds and an average failure rate of less than 0.5% during the heating season.

5. Selection and Procurement Recommendations

Fuel Compatibility: Fuel type should be selected based on local resource conditions. Gas-fired boilers are preferred in areas with natural gas coverage, while coal-fired or circulating fluidized bed boilers can be used in areas with abundant coal resources. Emission Requirements: Strictly adhere to the "Boiler Air Pollutant Emission Standard" (GB 13271-2014). For ultra-low emission areas, select boilers equipped with SNCR denitrification systems.
Supplier Selection: Prioritize manufacturers with Class A boiler manufacturing qualifications and full lifecycle services (including installation, commissioning, and personnel training), such as Wuxi Zhongzheng Boiler Co., Ltd. and Zhengzhou Boiler Co., Ltd.

2025-10-13

How to Maintain Gas Steam Boiler for Peak Efficiency and Longer Lifespan

A gas steam boiler is one of the most efficient and reliable heating systems used in industrial production. From food processing and chemical manufacturing to hospitals and textile factories, these boilers provide the essential steam and heat that keep daily operations running smoothly. However, without proper maintenance, even the most advanced system can lose efficiency, waste fuel, and face unexpected breakdowns.

This guide explains the best practices for maintaining gas steam boiler to achieve long-lasting performance, improved safety, and energy efficiency.

gas steam boiler

1. Conduct Regular Boiler Inspections

Regular inspection is the foundation of gas steam boiler maintenance. Routine visual checks allow you to identify problems early—such as leaks, corrosion, or strange noises—that may affect performance.

  • Burner flame: It should be steady and blue. Yellow or orange flames often signal poor combustion.
  • Pipes and joints: Look for any water leaks or gas smells.
  • Safety valves: Ensure they move freely without obstruction.
  • Pressure and temperature readings: Keep values within the manufacturer’s recommended range.

A simple weekly inspection can save time and money by preventing costly downtime.

2. Clean Boiler Components Thoroughly

Cleaning is a crucial part of maintaining gas steam boiler efficiency. Dust, soot, and mineral deposits reduce heat transfer and increase fuel consumption.

  • Burner cleaning: Remove carbon deposits to maintain complete combustion.
  • Heat exchanger cleaning: Keep the surface free of soot for optimal heat transfer.
  • Water tank and piping: Flush out sediment to prevent scale buildup and corrosion.

For industrial applications, professional cleaning every 3–6 months helps ensure stable, efficient operation.

3. Monitor and Improve Water Quality

Water quality directly affects boiler lifespan and efficiency. Hard water causes scale formation inside tubes, reducing the boiler’s heating capacity.

  • Use softened or treated water to prevent limescale.
  • Test pH and TDS levels regularly.
  • Drain and refill the system as recommended by the manufacturer.

Installing a water treatment system is one of the best investments for maintaining gas steam boiler performance over the long term.

maintain gas steam boiler

4. Maintain Proper Combustion and Gas Pressure

Efficient combustion ensures full fuel utilization and reduces emissions. When maintaining a gas steam boiler, check the following:

  • Air-to-fuel ratio: Too much air decreases efficiency; too little increases CO emissions.
  • Gas pressure: Must match the burner’s rated requirements.
  • Flue gas temperature: High readings may indicate soot buildup or poor heat transfer.

Modern boilers equipped with smart combustion control systems can automatically adjust air-fuel ratios for optimal efficiency.

5. Schedule Annual Professional Maintenance

Even if daily inspections are performed in-house, a yearly professional check is essential. Certified technicians can conduct a full system service, including:

  • Internal inspection and descaling
  • Burner calibration and safety testing
  • Gas emission and efficiency analysis
  • Replacement of worn seals or gaskets

Annual professional servicing ensures compliance with safety standards and keeps the gas steam boiler operating at peak efficiency.

6. Use Smart Monitoring Systems

Intelligent monitoring is an advanced way of maintaining gas steam boiler systems. These smart tools automatically track performance data, detect irregularities, and send alerts before serious faults occur.

  • Optimized fuel consumption
  • Reduced unplanned downtime
  • Easier preventive maintenance scheduling

Such digital solutions enhance both operational reliability and energy efficiency.

7. Benefits of Maintaining Gas Steam Boiler Regularly

  • Higher efficiency: Less fuel use and lower costs
  • Improved safety: Minimized risks of leaks or explosions
  • Reduced downtime: Fewer breakdowns during production
  • Extended lifespan: Better overall return on investment

In industries where steam and heat are essential, maintaining gas steam boiler systems is not optional—it’s vital for continuous productivity.

contact us

Conclusion

Maintaining gas steam boiler systems is more than cleaning or checking parts. It’s a strategic approach to boosting efficiency, cutting operational costs, and ensuring long-term reliability. Combining routine inspections, water treatment, and smart monitoring technology helps your boiler perform at its best year after year.

If you’re seeking high-efficiency gas boilers or reliable maintenance solutions, consider partnering with a professional manufacturer that offers both advanced technology and expert support.

WhatsApp: +8613838529852

2025-10-09

Guide for Selecting Low-Nitrogen Boilers

1. Introduction

With the continuous tightening of national environmental policy, boiler nitrogen oxide (NOx) emission limits are increasingly stringent. A low-nitrogen boiler has become the necessary equipment in industrial production, commercial heating and other fields. Many enterprises in the selection of both fear can not meet the requirements of the new regulations, but also worry about increased costs. In fact, the selection of low-nitrogen boilers can not only easily comply with regulations, but it can also reduce cost and increase efficiency by optimizing energy consumption. From the four dimensions of core index, combustion technology, system compatibility and policy subsidy, we can sort out the key points of low-nitrogen boiler type selection
Focus on the Core Indicators: NOx Emissions
At present, the mainstream standards implemented nationwide are divided into two categories: One is NOx emission ≤ 30mg/m³.It is suitable for first-tier cities and key industrial parks with strict environmental protection requirements, such as Beijing, Shanghai and Guangzhou. Some places have also introduced more detailed local standards, Enterprises should give priority to meet this target.
The other is NOx emission ≤ 50mg/m³. Covering most second- and third-tier cities and non-key control areas, meet the latest requirements of the National Boiler Air Pollutant Emission Standard (GB 13271-2014).


2. Comparison of Low-Nitrogen Combustion Technologies and Their Adaptable Scenarios

Full premixed combustion technology. By mixing gas and air in advance, To ensure more uniform and adequate combustion, NOx emissions can be easily controlled below 30mg/m³, and thermal efficiency can reach more than 96%. It is suitable for commercial buildings (such as hotels, hospitals) and small and medium-sized industrial scenes with high environmental requirements and energy efficiency. The advantages of this technology are stable operation, low noise and low maintenance costs, but it requires high precision for gas purity and air ratio. Initial equipment procurement costs are slightly higher. 
The staged combustion technology reduces NOx formation by reducing the local combustion temperature through feeding the gas into the furnace in stages. Emissions are usually around 50mg/m³, thermal efficiency is about 92%-94%, Suitable for moderate environmental requirements, large fluctuations in working conditions in the industrial field (such as food processing, textile). It is characterized by strong adaptability, moderate equipment costs and simple maintenance, but attention should be paid to the furnace structure design to avoid coking caused by local high temperatures.
The flue gas cycle combustion technology is to send part of the low temperature flue gas back to the furnace, mix with fresh air and participate in combustion, reduce the combustion temperature and oxygen concentration. NOx emission can be controlled at 30-50mg/m³, thermal efficiency is about 93% -95%, suitable for large industrial boilers (such as chemical industry, electric power). The advantages of this technology are that it is easy to retrofit and suitable for low-nitrogen retrofitting of the original boiler, but it needs additional flue gas circulating fan, which will increase a small amount of energy consumption.

3. Evaluation of System Compatibility

Circumstances where renovation is prioritized: If an enterprise's existing boiler has a short service life (no more than 5 years) and its body structure is intact, the enterprise can prioritize low-nitrogen retrofitting, low nitrogen emission can be achieved by replacing burner and optimizing furnace structure. The retrofit cost is usually 30% -50% of the newly purchased equipment. And the retrofitting cycle is short (about 1-2 weeks), can reduce the loss of production.
Circumstances where new purchase is recommended: However, it should be noted that some old boilers (service life of more than 10 years) due to body corrosion, low thermal efficiency, After the transformation may not meet the expected environmental protection and energy efficiency standards, but will increase the late maintenance costs, in this case the transformation is not recommended. If the existing boiler aging serious, high energy consumption, or enterprises have to expand production capacity demand, it is recommended to buy new low-nitrogen boiler. Although the early investment of newly purchased equipment is high (about 100,000-500,000 yuan for small and medium-sized boilers and more than one million yuan for large industrial boilers), but enjoy a longer life (usually 15-20 years) and better energy efficiency, lower long-term operating costs.
Considerations for system compatibility: The new boiler can be customized according to the existing pipes, pumps, heat exchangers and other systems, stronger compatibility, avoid the waste of energy caused by the mismatch of the system.

4. Make Full Use of Policy Subsidies

To promote the popularization of low-nitrogen boilers, the state and local governments have introduced a number of subsidy policies. Enterprises can take the initiative to apply for subsidies during the selection process to further reduce costs. Application should pay attention to two key points. Firstly, the subsidy application has a time limit, usually a fixed annual filing cycle, enterprises need to pay attention to the policy notice in advance. Secondly, some areas require the boiler to enter the local recommended directory, select the preferred products in the directory, can improve the success rate of subsidy application. In addition, Some provinces have also introduced supporting policies such as low-interest loans and tax breaks, so enterprises can make comprehensive use of various policies, enterprises can make comprehensive use of a variety of policies, reduce type selection and operation cost to the greatest extent.
If you need low-nitrogen boiler, please feel free to contact us. 
 

2025-09-30

Medium temperature and medium pressure hydrogen boiler: Technical Analysis, Application Advantages

Driven by the global goal of carbon neutrality, hydrogen, as a zero-carbon energy carrier, is moving from the laboratory to large-scale industrial application. Due to their high efficiency, cleanliness, and safety, medium-temperature, medium-pressure hydrogen boilers have become core equipment for resource utilization of by-product hydrogen in industries such as chemical, chlor-alkali, and steel. This article will systematically analyze the core knowledge of medium-temperature, medium-pressure hydrogen boilers from four perspectives: technical principles, application scenarios, safety specifications, and industry case studies.

I. Technical Principles: Core Design for Efficient Hydrogen Energy Conversion

1. Boiler Structure
Medium-temperature, medium-pressure hydrogen boilers typically utilize a vertically mounted double-drum D-type layout. The convection heat transfer section is a single-pass structure, resulting in low flue gas emission resistance and heat transfer efficiencies exceeding 90%. For example, the 20 t/h hydrogen boiler at Qingdao Bay Chemical has a design pressure of 1.6-2.5 MPa and a steam temperature of 250-350°C. The combination of membrane water-cooled walls and convection tube bundles optimizes both radiative and convective heat transfer.

2. Combustion System Innovation
Diffusion External Mix Burner: Hydrogen and air enter the furnace in two separate paths, creating a gas-rich center zone and an air-rich edge zone at the burner nozzle, preventing flashback and improving combustion efficiency to over 99.5%.
Secondary Ignition Safety Mechanism: Natural gas is first used to ignite the auxiliary ignition nozzle. Once combustion stabilizes, the hydrogen main burner is switched. Combined with a flame monitor and automatic leak detection system, this ensures a risk-free ignition process.
Intelligent Air Volume Control: A PLC+touchscreen control system adjusts the forced air/induced air ratio in real time based on hydrogen flow, achieving stable combustion within a load range of 30%-100%.
3. Energy-Saving and Environmentally Friendly Design
Spiral Fin Tube Economizer: Utilizes flue gas waste heat to heat boiler feed water, reducing exhaust gas temperature to below 150°C and improving thermal efficiency by 5%-8%.
Ultra-Low NOx Emission Technology: Through staged combustion and flue gas recirculation, NOx emissions are below 30mg/m³, meeting EU BEST standards. Explosion-proof doors and walls: A gravity-type explosion-proof door is installed on the top of the boiler, and refractory concrete explosion-proof walls are built around the furnace to ensure the safety of personnel and equipment under extreme operating conditions.

2. Application Scenario: A Revolution in the Resource Utilization of By-Product Hydrogen

 
1. Chlor-alkali Industry: From "Wasteful Venting" to "Steam Self-Sufficiency"
Take Shandong Xinlong Group as an example. Its chlor-alkali plant produces over 100 million Nm³ of by-product hydrogen annually. Traditionally, this was handled by burning it or compressing it for export. The introduction of a hydrogen boiler converts the hydrogen into steam and feeds it into the pipeline network, achieving:

Direct Steam Cost Reduction: The steam cost per ton of caustic soda has dropped from 280 yuan to 199.5 yuan, saving over 8 million yuan annually.

Significant Carbon Emission Reduction: Based on a carbon trading price of 80 yuan per ton, this reduces carbon emissions by 200,000 tons annually, generating carbon revenue of 16 million yuan.

Improved Process Stability: The steam supply has shifted from external reliance to self-sufficiency, avoiding production interruptions caused by external steam fluctuations. 2. Steel Industry: Synergistic Utilization of Blast Furnace Gas and Hydrogen
A steel plant mixes blast furnace gas and hydrogen in a 3:1 ratio and burns them. The mixture is then used in a hydrogen boiler to generate medium-pressure steam for power generation. This achieves:

Increased calorific value: The calorific value of the mixed gas increased from 3.5 MJ/m³ to 8.2 MJ/m³, improving power generation efficiency by 40%.

Reduced pollutant emissions: Sulfur dioxide emissions decreased by 60%, and dust emissions by 75%.

Optimized economics: The proportion of hydrogen costs to steam costs decreased from 35% to 18%, shortening the payback period to 2.3 years.

3. Chemical Park: A Model of Cascaded Hydrogen Energy Utilization
In a chemical park in Jiangsu, a hydrogen boiler, thermal oil boiler, and steam turbine form a cascaded energy utilization system:

Primary Utilization: The hydrogen boiler generates medium-pressure steam (3.82 MPa, 450°C) to drive a steam turbine for power generation.

Secondary Utilization: The turbine back-pressure steam (1.0 MPa, 180°C) is used by park enterprises. Level 3 Utilization: Low-temperature waste heat is used to heat the process medium via a thermal oil boiler, achieving an overall system energy efficiency exceeding 85%.

3. Safety Standards: Comprehensive control from design to operation and maintenance


1. Safety Redundancy in the Design Phase

Pressure Vessel Standards: The boiler drum and header are designed in accordance with GB/T 150 "Pressure Vessels," with a 20% safety margin reserved for wall thickness.

Material Selection: Components contacting hydrogen are constructed using 316L stainless steel or Monel alloy to mitigate the risk of hydrogen embrittlement.

Explosion-Proof Design: The combustion chamber volume is designed to 1.5 times the explosion limit of hydrogen (4%-75%) to ensure a safe clearance.

2. Standardized Installation and Commissioning Procedures

Pipeline Pressure Testing: Hydrogen pipelines must undergo a hydraulic pressure test at 1.5 times the design pressure, maintaining the pressure for four hours without leaks.

Nitrogen Replacement: Before commissioning, the pipelines must be purged with nitrogen. Hydrogen can only be introduced when the oxygen content is below 0.5%. Pre-ignition Inspection: Confirm that the pneumatic shut-off valve, flame monitor, and pressure interlock are functioning properly, and conduct a simulated ignition test.
3. Key Control Points for Operation and Maintenance
Water Quality Management: Maintain the feed water pH between 8.8 and 9.2, with an iron ion content below 50 μg/L, to prevent boiler drum corrosion.
Load Regulation: The single load change rate should not exceed 10%/min to avoid stress cracking caused by sudden changes in furnace temperature.
Regular Inspection: Conduct internal inspections every two years, focusing on water-wall tube thickness, weld quality, and explosion-proof door sealing.

4. Industry Case Study: Fangkuai Boiler's Zero-Carbon Practice

1. Technological Breakthrough: Domestication of Medium-Temperature, Medium-Pressure Hydrogen Boilers
Fangkuai Boiler's 65 t/h medium-temperature, medium-pressure hydrogen boiler utilizes fully premixed surface combustion technology, achieving:

92% thermal efficiency: Through slightly positive pressure combustion and flue gas recirculation, this achieves an 8 percentage point improvement over traditional boilers. Fast Startup and Shutdown: The time from cold to full load is reduced to 40 minutes, adapting to fluctuating chemical production demands.
Intelligent Diagnosis: The operation and maintenance system, equipped with AI algorithms, can predict boiler failures 72 hours in advance, reducing unplanned downtime by 90%.
2. Application Results: A Win-Win Transformation for a Chlor-Alkali Company
After introducing Fangkuai hydrogen boilers, a chlor-alkali company achieved:

100% steam self-sufficiency: Annual reduction of external steam purchases by 200,000 tons, saving 40 million yuan.
Carbon Quota Surplus: Annual reduction of carbon emissions by 500,000 tons, generating 40 million yuan in profits through carbon trading.
Environmental Compliance: Nitrogen oxide emissions were reduced from 200mg/m³ to 25mg/m³, meeting ultra-low emission requirements.
Conclusion: Hydrogen Boilers – The Key Player in Industrial Green Transformation
Medium-temperature, medium-pressure hydrogen boilers are reshaping the industrial energy landscape through the dual guarantees of technological innovation and safety regulations. From the utilization of byproduct hydrogen in the chlor-alkali industry to its cascaded utilization in steel and chemical parks, its economic and environmental benefits have been fully demonstrated. With the global implementation of carbon tariffs and the tightening of domestic carbon quotas, hydrogen boilers will become core equipment for companies to achieve their "zero-carbon steam" goals, accelerating the evolution of industrial energy towards cleaner and more efficient processes.

2025-09-15

The Main Components and Technical Overview of Steam Boilers

1. Boiler Shell

The boiler shell is the outside structure for the entire boiler. It is used to support and protect the internal parts of the boiler. It is typically constructed from high carbon steel plates and can operate at the high temperature and high pressure conditions inside the boiler. 

2. Furnace

The furnace is the area where the fuel burns and gives off heat to the water or steam system of the boiler. The high temperature flames and smoke of the furnace exit and are transferred to the water or steam system of the boiler through radiation and convection. Most furnaces today have fuel burners and control systems to efficiently burn the fuel and emit low pollutants.

3. Grate ( Used for Solid Fuel Boilers)

In solid fuel (such as coal) boilers, the grate is used to support the fuel and evenly sends the fuel into the furnace for combustion through its movement. The movement of the grate can also help to discharge the ash after burning. 

4. Boiler Drum 

The boiler drum is an important part of the boiler, which is used to separate water and steam. It is equipped with a soda separation device inside to ensure the quality of saturated steam.
The design of the boiler drum needs to take into account its internal steam-water separation effect, water level control and pressure adjustment. Its material and structure must be able to withstand high temperature and high pressure to ensure safe operation.

5. Water Walls

The water walls (or tubes) are one of the main heating surfaces of the boiler, which absorb radiant heat in the furnace to heat water into a steam-water mixture. The water walls are usually arranged around the furnace to form a closed circulation system.
The design of the water wall needs to consider its heat absorption efficiency, water circulation speed and high temperature resistance. Its material is usually heat-resistant steel to ensure stable operation in a high-temperature environment.

6. Superheater

The superheater is to further heat the saturated steam to make it superheated steam. Superheated steam has a higher temperature and pressure, which is more suitable for driving equipment such as turbines. 

7. Economizer

The economizer is a preheating device of the boiler. It absorbs the residual heat in the flue gas to preheat the boiler water. This not only improves the thermal efficiency of the boiler but also reduces fuel consumption.
The design of the economizer needs to consider its heat exchange efficiency and the control of feedwater temperature. Its material is usually corrosion-resistant steel to ensure long-term stable operation in a flue gas environment.
                                                                                                  

8. Air Preheater

The air preheater function is preheat the cold air entering the furnace to increase the combustion efficiency. The preheated air will raise the burning fuel temperature and lower the fuel consumption.
The design of the air preheater needs to consider its heat exchange efficiency and air temperature control. Its material is usually corrosion-resistant steel to ensure long-term stable operation in a flue gas environment.

9. Safety Valve

The safety valve is a safety device for the boiler. The pressure in the boiler is higher than the specified value, the safety valve will automatically open to release the pressure and prevent the boiler explosion.
Requirements for the design of the safety valve must meet the safety standard specifications, so that the safety valve can be opened and closed automatically when needed. The material and structure of the safety valve must be able to resist high temperature and high pressure.

10. Water Supply Pump

The role of the water pump is to deliver the deoxygenated water into the boiler. The performance of the water pump has a direct impact on the water circulation and operation of the boiler.
Requirements for the design of the water supply pump should calculate the flow and lift and efficiency. The material and structure of the water supply pump must be able to resist high temperature and high pressure.

11. Chimney

The chimney is used to discharge the flue gas generated by the combustion of the boiler. Its design needs to take into account the emission speed, temperature and environmental protection requirements of flue gas.
The design of the chimney needs to consider its height, diameter and material. Its material is usually corrosion-resistant steel to ensure long-term stable operation in a flue gas environment.

Conclusion

From the generation of heat in the furnace to the conservation of heat in the economizer, from explosion prevention by the safety valve to the supply of feed water by feedwater pumps, each component is an important part of the safety, efficiency and reliability of the boiler. Only by mastering the main components of the steam boiler, the operator, the steam boiler to the operation of the facility will understand the steam boiler, so as to ensure the optimal performance of the steam boiler, reduce the operating cost and extend the service life of the equipment.
If also you want to know more information about steam boiler, you can contact us at any time, we have professional personnel to provide you with a simple answer and reasonable plan, looking forward to your consultation!

2025-09-08

Boilers are essential for keeping homes and businesses warm and comfortable, but when they start shutting off unexpectedly, it can be frustrating and confusing. Understanding the cause of frequent shutoffs and knowing how to troubleshoot them can save time and money. This article explores common problems that cause boilers to shut off and provides practical solutions to fix them.

Troubleshooting Guide: Why Your Boiler Keeps Shutting Off

The development of social science and technology and technical means has promoted the rapid development of the breeding industry. People obtain meat, eggs, milk, wool, cashmere, hides, silk and medicinal materials from poultry such as chickens, ducks and geese through artificial breeding. For many farms, maintaining a constant temperature living environment for poultry is a top priority.
 
How to choose the type of hot water boiler for heat preservation in farms, Fangkuai Boiler can give you the most sincere guidance and advice.
 
Taking a shrimp farm as an example, we will focus on how users in the aquaculture industry should choose suitable hot water boilers.
 
Generally speaking, shrimp farming requires "cold water", but this "cold water" refers to the natural water temperature in a normal environment, that is, a temperature between 10-20 °C. However, in winter, it is necessary to start the hot water boiler equipment to maintain the temperature of the shrimp pond and ensure that the shrimp can survive normally.
 
In order to meet the needs of the livestock for the environment and diet, a device that can output heat in a lasting and stable manner is required. We can see that in many large farms, one or several steam or hot water boilers will be equipped for the livestock of the farm.
 
The shrimp farm that cooperated with Fangkuai Boiler this time needs to use a boiler to maintain the constant temperature of the shrimp pond. According to the knowledge of Fangkuai boiler sales consultant, the shrimp farm has a total pool volume of 20 tons. The boiler is mainly used in winter, and the water at subzero temperature needs to be heated to about 10°C. After calculation, the technicians of Fangkuai Boiler concluded that a half-ton atmospheric pressure hot water boiler can meet their needs. For this reason, we provided a boiler with an output of 0.35MW (that is, a half-ton capacity). Atmospheric pressure vertical gas hot water boiler (CLSH0.35-95/70-Q). The adjusted hot water boiler can maintain a temperature difference of 14°C between the inlet and outlet water and maintain a constant temperature in the shrimp farm's pool. Combined with the actual situation of the user's project site, the natural gas interface has not yet been connected to the local area. We have customized a plan for using liquefied petroleum gas. The fuel is transported through canned transportation. There is no need to specially prepare a fuel storage site, and it is very clean and convenient to use.
 

Guidance Scheme for Selection of Hot Water Boilers for Thermal Insulation of Farms

According to the structural design, the use of atmospheric hot water boilers should be of no risk. This is mainly due to the fact that the top of the atmospheric hot water boiler is open to the atmosphere, and the internal pressure is always the same as the outside. Many residential and breeding centers choose to use this type of boiler.

Although the safety of atmospheric pressure hot water boilers is very high, this does not mean that the furnace personnel can be negligent. A relatively old steam boiler located in a fish farm in Wangtan Village, Rudong Town, Rudong County, exploded due to improper operation of the boiler operator.

When using a normal pressure hot water boiler, pay attention to the regular observation of the water level to avoid low water level and dry burning. Otherwise, there will be certain dangers, and the service life of the boiler will be seriously reduced. Boiler operators should pay attention to the following matters:
       1. Strictly implement various rules and regulations, earnestly study the professional knowledge of boilers, continuously improve the level, and ensure the safe and economic operation of boilers.
       2. After the normal pressure hot water boiler is put into use, the unit and individual may not change the boiler structure, valve and pipeline system without authorization.
       3. Inspect and inspect various equipments according to regulations before taking over, including: water level of water tank (hot water tank, expansion water tank), energy consumption (boiler gas meter), thermometer (hot water tank temperature, boiler heat medium water temperature), etc. Check the operation records, check the equipment, and learn more about the boiler operation when you transfer the shift.
       4. The succession personnel will go to the boiler room in advance to prepare for the work according to the regulations, shifts and prescribed time, and understand the boiler operation.
       5. The shifter should prepare in advance, carry out serious and comprehensive inspections and investigations, and keep the boiler running normally.
       6. The shifting staff should introduce the relevant problems of equipment operation, water quality and boiler discharge to the successor. If the handover procedure is not completed, the handover personnel must not leave the job. 7. Keep the boiler body clean when the boiler is running, no dirt, no leakage, no rust and corrosion, and fill in the equipment maintenance record carefully and in detail.
       8. The boiler room is one of the key departments of the boiler unit. Except for the boiler room staff, relevant leaders, and safety, security, and department management personnel, other personnel are not allowed to enter without permission.
       9. It is forbidden to store inflammable, explosive and other miscellaneous items in the boiler room. It is necessary to install oil drums and oil pots with a small amount of lubricating oil and cleaning oil. Store them at the designated place and pay attention to check whether there is explosives in the burning.
       10. The boiler room should be equipped with fire-fighting equipment, carefully managed, do not move or use it for other purposes.
       11. The floor, walls, doors and windows of the boiler room are always kept clean and hygienic.
       12. The supervisors should check the operation records and environmental sanitation regularly and irregularly, find problems and solve them in time.
       13. Go to work on time according to the prescribed time, do a good job of shifting records, and do not leave the job casually.
       14. It is strictly forbidden to drink alcohol, sleep, gamble, and fight in the boiler room.
       15. After equipment failures and accidents are reported in time (timely reported to the person in charge at night), the written accident report is written in a realistic manner. After the investigation is clear, after the responsibility is clarified, the accidental loss is caused to the dereliction of duty, and the responsibility is handled.

How to make the normal pressure hot water boiler operate safely?

There are three reasons for the explosion of a gas boiler: gas (fuel), air and heat. Once the three reach a certain level, it is not far from the explosion of the boiler.

The key to preventing the explosion of gas boilers is to prevent the three from reaching certain limits at the same time. Among them, air is ubiquitous, it is very difficult to remove this condition, so the focus of explosion-proof is concentrated on gas and heat sources. Therefore, almost all gas explosion-proof technologies at this stage focus on how to treat gas and heat sources.

A large number of accidents indicate that the explosion of the gas boiler boiler or flue site is caused by the accumulation of gas and air in the furnace or flue, and the fire or high-temperature heat source. The combustible mixture is obviously mixed with air from the air. Forming. Therefore, the core of preventing gas boiler explosion is to prevent the boiler from entering the furnace when it is not running (no flame in the furnace); and it should be noted that the boiler must be "fire and other gas" when it starts, that is, the gas is first supplied and then ignited to form a heat source.

To this end, "Steam Boiler Safety Technical Supervision Regulations" and "Hot Water Boiler Safety Technical Supervision Regulations" clearly stipulate that: gas (including fuel, pulverized coal) boilers must be equipped with reliable ignition program control and flameout protection devices; Explosion-proof doors should also be installed in inflammable and explosive parts such as furnaces and flue ducts. The first half of the regulation is actually based on the mechanism of the explosion to prevent the formation of a mixture of gas and air, and to ensure the realization of "fire and other gas"; the latter part is used as a remedy, once the furnace or flue explosion, through the explosion-proof door Reduce the damage caused by the explosion.

How to prevent gas boiler explosion?

Pickling is the main method for removing a large amount of oxidizing substances and corrosion products inside a gas boiler, and also has the effect of eliminating scale. The pickling process is usually carried out after 1-3 weeks of boiler operation. FANGKUAI Boiler summarizes the steps of boiler pickling for your reference and understanding.

First, cleaning tools
       Boiler energy saver, steam drum, water wall, hydrochloric acid, ammonium bifluoride.

Second, the cleaning method
       1. First, at the beginning of the pickling work, the boiler's economizer, steam drum and water wall are filled with demineralized water.
       2. The boiler is ignited. When the temperature of the boiler rises to 70-80 ° C, the boiler is turned off, and then the pickling operation can be performed. Before the pickling operation, the superheater should also be recharged with demineralized water until the water overflows into the steam drum to prevent acid or acid vapor from being introduced into the superheater.
       3. When the acid is charged into the boiler, the boiler should not be ignited under any circumstances. The steam drum and other venting holes should be opened to remove the hydrogen generated by the reaction of acid and iron. Before making sure that the hydrogen has dissipated, avoid open flames or use electrical equipment that generates sparks to avoid the risk of hydrogen explosion.
       4. Finally, after the acid filling is completed, let the boiler and economizer soak for about 6 hours in the solution, then drain the acid and rinse the superheater with demineralized water. The acid is discharged. After the acid is drained, the boiler feed water pump is operated, and the water of one economizer is filled into the boiler to prevent the water supply shutoff valve from leaking.

Third, matters needing attention
       The gas boiler can be pickled with 5% hydrochloric acid with 0.25% ammonium difluoride inhibitor added. The acid solution is injected into the boiler through the pickling joint on the steam drum down pipe, and the acid filling of the economizer is carried out through the recirculation pipe. The filling of the acid solution should be carried out until the liquid level in the steam drum temporary water level gauge rises significantly until the liquid level rises above the cyclone separator, but it should be noted that the acid liquid cannot enter the superheater, otherwise it will cause serious damage.

How to clean the gas boiler?