Industrial boilers are very useful in all walks of life and can be said to be an indispensable device. So, are there any requirements for the internal temperature during the operation of industrial boilers? Let's take a look at what Zhengzhou Fangkuai boiler manufacturers say.

If it is an industrial hot water boiler with a boiler capacity of 2.8MW, it means that the heating capacity or heat supply of the boiler is 2.8MW, that is, the heat output per hour is 2.8MW. If converted into a steam boiler, it should be 4 tons in tonnage.

In order to use industrial boilers normally, what certificates are required?

For the use of industrial boilers, the certificates they must have are mainly product certification, boiler use registration certificate, and boiler annual inspection report certification, which are indispensable.

Are there any requirements for the internal temperature of industrial boilers?

As for the internal temperature of industrial boilers, generally speaking, it should be higher than the dew point temperature of sulfuric acid in the flue gas. In theory, it should be higher than 20-30 ℃.

What are the requirements for industrial boilers to be tested for hydrostatic pressure?

The ambient temperature of the hydrostatic test cannot be less than 50 ° C. If it is less than 50 ° C, anti-freezing measures are required. And the water used should be clean water. The water temperature should be higher than the surrounding dew point temperature, but it should not be too high to avoid excessive temperature difference stress or vaporization.

The safe operation of industrial boilers is very important, because once the industrial boiler fails, it is very easy to cause an explosion, which will cause loss of personnel and property. Mastering the correct operation method is an important way to ensure the safe use of industrial boilers, so mastering some emergency treatment methods in the face of sudden boiler conditions to prevent failures from becoming accidents is the guarantee of the safe operation of the boiler.

1. Industrial boiler overpressure accident
       Overpressure accidents are accidents caused by the actual pressure in the boiler exceeding the maximum working pressure during the use of the boiler, which is a relatively common boiler accident. The main reasons for the overpressure accident of the boiler are: the failure of the gas-using equipment to fail to use the gas normally; the failure of the safety valve and the failure of the alarm instrument; because of the defects involved in the boiler, the exhaust cross-sectional area of ​​the safety valve was not adjusted when the pressure was reduced The original safety valve is still used.
       In the face of overpressure accidents, we must first reduce the combustion; if the boiler safety valve repair works normally, we must first take manual exhaust, or open the vent valve on the boiler for exhaust to adjust the pressure of the boiler and maintain the boiler. The internal water level is normal.

2. Industrial boiler water shortage accident
       The water shortage accident is mainly due to the water level in the boiler being lower than the safe water level. The lack of water in the boiler will often lead to overheating of the heating surface of the boiler, resulting in deformation or even wave trains; the bulging or shedding or leakage; the boiler wall is damaged.
       Before dealing with boiler water shortage accidents, it is necessary to judge the severity of the accidents and then select a reasonable solution. In judging the severity of the accident, the method called "water" is used. The specific work flow is to open the discharge cock for the watch, rinse the water vapor connecting pipe and the water connecting pipe, close the standard steam connecting pipe cock, and close the water discharging cock at the same time. If the degree of boiler water shortage cannot be accurately grasped, the boiler cannot be watered, so as not to cause a boiler explosion accident.

3. Industrial boiler full water accident
       The boiler full water accident is mainly caused by the water level in the boiler being higher than the highest scale of the water level meter, which will cause a large amount of water in the steam, which will cause water hammer in the steam pipeline; Gas supply will also be affected.
       To deal with the boiler full water accident, the water level meter should be compared and flushed, and the water level meter should be checked for failures in time; when the boiler is full of water, the boiler feed water valve should be closed in time, the boiler water supply operation should be stopped, and the boiler combustion should be reduced in time. Boilers with economizers must also open the economizer's circulation valve, and open the drain valve, steam pipeline, and superheater trap.

Flue gas will be emitted during the operation of industrial boilers. At this stage, China has strict standards for the flue gas emissions of boilers, which is closely related to environmental protection. Industrial boilers with flue gas emissions that do not meet the standard cannot operate normally and need to be shut down. Only through boiler renovation or re-purchase.

The use of industrial boilers can be controlled at a very low price through transformation, and the trouble of repurchasing new boilers can also be eliminated. Zhengzhou Fangkui Boiler Factory helps everyone understand how industrial boilers have completed low-nitrogen environmental protection transformation through an example of the transformation of an enterprise's industrial boilers.

The boiler model is SHL35-2.45-AII boiler. During the operation process, the effect of the dust collector cannot reach the industrial boiler flue gas emission standard, and the emission cannot be achieved. Due to the continuous improvement of the environmental protection standards for desulfurization, denitrification and dedusting of industrial boilers, the technical reformation of desulfurization and dedusting of existing boiler dedusting equipment is required, so that the smoke and sulfur dioxide emissions in the boiler flue gas meet the relevant national environmental protection requirements.

This boiler reform follows the control requirements that meet the environmental emission standards of industrial boilers; choose mature and reliable dust removal and desulfurization processes; the operation of the dust removal and desulfurization system does not affect the operation and operation of the original production equipment, and ensure the safe and stable operation of the boiler system; management Convenient maintenance; combined with the existing plant and equipment, make full use of the original equipment and system, reasonable layout, small footprint, meet the overall system and site layout requirements; overall consideration of dust removal, desulfurization, and denitrification transformation, after the transformation must not be implemented in the future The principle of the impact of the denitrification renovation project.

After the transformation of the flue gas system and desulfurization tower system is completed, the current flue gas emissions of the boiler are: sulfur dioxide emission concentration ≤160mg / Nm³; smoke dust emission concentration ≤30mg / Nm³; flue gas Ringerman blackness is 0 -Level 1. When the dust concentration at the inlet of the dust collector is ≥4000mg / Nm³; when the concentration of sulfur dioxide is ≥3000mg / Nm³, the dust removal efficiency is ≥99.5% and the desulfurization efficiency is ≥95%.

After the transformation of the industrial boiler, the environmental protection department must also apply to the environmental protection department for acceptance monitoring and evaluation according to the acceptance level of the environmental protection project.

Induced draft fans have important applications in industrial boiler systems, which can increase gas pressure and discharge gas. Once the induced fan has abnormal noise and other failures, it is very likely to endanger the normal operation of the boiler. We need to analyze the abnormal vibration machine of the induced draft fan and take effective measures to cope with it to provide guarantee for the normal operation of industrial boilers.

First of all, it is necessary to analyze the cause of the induced fan vibration. The causes of induced fan vibration mainly include vibration of motor, induced fan bearing box, coupling, fan casing, impeller, etc.

When the induced draft fan vibrates, it will cause injury to people and equipment.

1. Harm to people. When working in a vibrating environment, human vision will be disturbed and it is difficult to concentrate, which may lead to quality accidents and even safety accidents. Vibration can interfere with the daily life of people around, such as sleep, rest, reading, and damage people's health.

 

2. Harm to the boiler room. Depending on the vibration intensity and frequency of the induced draft fan, it will destroy the building structure of the boiler room.

 

3. Harm to industrial boilers. The vibration of the induced draft fan will harm the normal operation of precision instruments, affect the accuracy and reading speed of the scale reading, or even fail to read at all.

 

4. Harm of noise to the environment. The vibration of the induced draft fan will directly radiate noise into the space, and it will propagate in the soil. During the propagation process, it will also agitate the vibration of the building foundation, walls, beams, ceilings, doors, windows and pipes. Radiate the noise again.

 

Therefore, we have to find out the main cause of the induced draft fan vibration of industrial boilers, and start to deal with the vibration fault immediately.

Gas-fired vacuum hot water units and gas-fired vacuum hot water boilers are all vacuum equipment, which have the characteristics of safety and no explosion risk, and can also output high-temperature hot water. However, there is still a clear difference in performance between the two.

The difference between these two types of equipment is generally reflected in the control and management of the equipment and the operational requirements of the operators. And, comparing these two, gas vacuum hot water boiler is better than gas vacuum hot water unit, the specific reason we also see below.

The gas-fired vacuum hot water boiler works by using the characteristics that the boiling temperature of water is different under different pressures. At an atmospheric pressure, the boiling temperature of the water is 100 ℃, and the vacuum hot water unit is operated within a pressure range of -0.02Mpa, and the corresponding heat medium water temperature is lower than 93 ℃. Under pressure, combustion raises the temperature of the heat medium water to saturation temperature and produces steam of the same temperature on the water surface.

The gas-fired vacuum hot water boiler adopts a unique condensation technology, so that the boiler's operating efficiency can reach 107%. Everyone has doubts here, can the operating efficiency exceed 100%? In fact, the gas vacuum hot water boiler can make full use of the boiler's own operating efficiency and the high temperature heat carried in the flue gas discharged, and then put it into the boiler for recycling, so that the boiler's operating efficiency can reach 107%. For enterprises using this type of equipment, the use of gas-fired vacuum hot water boilers can save at least tens of thousands of yuan to hundreds of thousands of yuan in fuel input costs.

Moreover, the gas vacuum hot water boiler uses gas fuel, plus the full premixed combustion technology, the gas fuel is pre-mixed with the combustion-supporting gas (that is, air) before being put into combustion, and then reaches the precise ratio before participating in the combustion. The fuel can be fully burned, the emission of nitrogen oxides is also reduced, and the environmental performance is more excellent.

Through various comparisons, it is enough to see that the overall efficiency of the gas vacuum hot water boiler is higher than that of the gas vacuum hot water unit.

There are more and more gas hot water boilers on the market. This is mainly because gas hot water boilers have the advantages of simple use, high operating efficiency, and low pollutant emissions. More and more customers like to use such equipment. Boiler types are even more abundant.

Gas hot water boilers are generally used for heating and heating. Of course, there are also some industries, such as automotive painting, aquaculture, buckling greenhouses and other industrial places, which have higher requirements for water temperature, and will also use this Boiler.

Today we are mainly talking about the common demand for gas hot water boilers-heating. When the heating area is 5000-6000 square meters, is it suitable to use gas hot water boiler?

Zhengzhou Fangkui Boiler Factory solemnly replies to everyone here that the heating area of ​​5000-6000 square meters is suitable for the use of gas hot water boilers. See below for specific reasons.

The operating efficiency of gas hot water boilers introduced by Zhengzhou Fangkui Boiler Factory can reach more than 95%, which is in a leading position in the entire boiler market. Calculated in this way, the heating area of ​​5000-6000 square meters only needs 0.35MW (that is, 0.5 tons, half tons) of gas hot water boiler is enough, compared with other heating equipment, I do not know how much higher the efficiency, the overall cost performance is also Very high.

Moreover, the overall volume of the 0.5-ton gas-fired hot water boiler is very small, generally within 2 cubic meters, and there is no high requirement for the boiler room. As long as the boiler is debugged, the water, electricity and gas pipelines can be connected and used.

In addition, the gas hot water boiler is also very convenient to operate. Each boiler is equipped with a control cabinet. You only need to adjust various coefficients by operating on the control cabinet to complete the boiler adjustment work. It is very simple and quick to get started.

When the boiler after-sales engineer of Zhengzhou Fangkui Boiler Factory visited customers regularly, he received many questions from users who used steam boilers: whether steam boilers must carry out blowdown operations. Many users look at the operation of the boiler is very good, they feel like it does not need to blow down, but is this the case? Zhengzhou Fangkuai Boiler Factory will tell you the answer.

The steam boiler must be discharged, and not only the steam boiler, but other types of boilers also need to be discharged, and they must be quantified regularly, using professional equipment and professional technicians.

No matter what kind of boiler, it is necessary to carry out blowdown work, otherwise it will affect the normal operation and use of the boiler, and thus shorten the boiler's service life.

For the discharge of steam boilers, the specific steps are as follows.

In a steam boiler, the boiler water with a lot of salt or alkali inside, as well as water slag, sludge, and sediment should be regularly removed, so that the boiler water meets the specified use requirements.

Steam boilers are used a lot in the brewing industry. Considering the particularity of the brewing industry, special attention should be paid to the use of boilers.

For steam boilers used in the brewing industry, it is necessary to pay attention to changes in the three aspects of boiler steam volume, steam outlet time and thermal efficiency. The relevant factors that affect the price of steam boilers are mainly manufacturers, materials, quality, and burners. Therefore, it is necessary to comprehensively consider the performance of the boiler, so as to have a reasonable range of choices, so as to choose the right boiler product.

Boiler is a kind of special equipment, which involves a lot of knowledge in all aspects of manufacturing and component parts. If you want to understand and master it all, it will take some time and effort; and when we have mastered some characteristics of the boiler, whether it is Buying or operating boilers can avoid many pits.

Today, Zhengzhou Fangkuai Boiler Factory will explain the boiler body to everyone in order to promote the understanding of the boiler.

1. What is the boiler body? Is it included in the overall structure of the boiler?
       The boiler body, in simple terms, is the body part of the boiler. Specifically, the structure is mainly composed of the steam drum and its accessories, various heating surfaces, headers and pipes, steam and water system pipes and accessories, combustion equipment, smoke Air ducts, frameworks, etc., as well as furnace walls. There is a boiler body in the overall structure of the boiler, in addition, there are auxiliary equipment; therefore, it can be said that the overall structure of the boiler has two parts, which are the boiler body and auxiliary equipment.

2. What is the role of each part on the boiler body?
       The role of various parts on the boiler body, specifically speaking, is mainly as follows:
       Evaporation equipment: there are mainly steam drums, headers, downcomers and water-cooled walls, etc. Its specific role is to heat the water to make it saturated steam.
       Combustion equipment: there are mainly combustion chambers, burners, and grate, etc. Its role is to provide a place for combustion and good combustion conditions.
       Superheater: There are mainly two headers and a serpentine tube, which turns saturated steam into superheated steam. Energy-saving device: the waste heat of flue gas is used to heat the heating surface of the boiler feed water, so that the boiler can run smoothly.
       Furnace wall and frame: The furnace wall in the boiler body has a certain shape, generally between the furnace and the flue, with a certain interval. The frame can also be called a steel frame. Its main function is to support the components and equipment in the boiler body.

Boiler is a symbol of the industrial age, and its emergence and development are driving changes in the industrial industry. With the progress of time and the advancement of science and technology, boiler equipment is also gradually developing. Zhengzhou Fangkuai boiler manufacturers have introduced gas boilers, fuel oil boilers, electric boilers and other equipment that are more suitable for the development needs of the times to meet the needs of modern enterprise users. demand.

Gas hot water boiler is a good product for heating and heating applied by Fangkuai boiler manufacturers. What are the advantages of this product? Hear what Song Gong, our boiler technical engineer, says!

In general, the common problems of boilers are as follows: costly, environmentally-friendly, unsafe and dangerous, occupying a large area of ​​space, requiring special management, and troublesome use of various security certificates.

However, gas-fired hot water boilers do not have these troubles. Gas boilers use gas fuel, which causes severe pollution after combustion with coal-fired boilers. Pollutant emissions from gas-fired boilers are very small, so they are also very environmentally friendly.

In addition, Fangkuai boiler manufacturers have installed intelligent control systems for gas hot water boilers. Users do not need to worry about explosion or other dangers when using and operating the boiler, and the safety factor is very high.

The gas-fired hot water boiler also uses high technology. Through multiple trial and error, the boiler has a well-designed structural structure. The manufactured gas boiler has a small footprint and is easy to operate. No special person is required to operate. For the user, it can also save the investment cost of operating the boiler, achieving both goals.

The gas hot water boiler is a clean and environmentally friendly boiler for heating and hot water. It is also widely used in all aspects of industrial production. The products sold on the market can be said to be very diverse. Consumers have brought the opportunity to choose fully, and at the same time, the problem of how to choose the right gas hot water boiler has been put in front of consumers. This requires us to keep our eyes open and understand gas hot water when buying gas boiler The performance of the boiler, Zhengzhou Fangkuai Boiler Co., Ltd. will introduce you the good performance indicators of gas boilers.

When selecting gas-fired hot water boilers, we mainly include selecting services and selecting power. In many cases, when major boiler manufacturers sell their products, they are eloquent about the advantages and promises for after-sales service, but not many can really do as promised. The gas-fired hot water boiler can achieve constant temperature control, regular on and off, and reasonable use of electrical energy. It can be adjusted freely at 40 ℃ -80 ℃.

The gas hot water boiler is also equipped with multiple protection systems, such as double leakage protection, anti-dry-burn protection, over-temperature alarm, etc. After the boiler is started, the temperature rises comfortably and the thermal efficiency can reach more than 98%.

The gas hot water boilers from Fangkuai Boiler manufacturers also have various power options, but everyone must remember to choose the right boiler power. The selected power is large, wasting money and energy. The selected power is small, and the waste of funds and energy is small, but it cannot meet the requirements for use.

The outlet temperature of the gas hot water boiler is above 70 ℃, and the temperature of the radiator is above 75 ℃ in 30 minutes. There is a non-pressure water heating cycle with multiple non-drying and non-pressure water heating cycles. Suitable for winter heating and hot water supply.

With the development of science and technology, boiler equipment and technology are also constantly developing and innovating. The electric steam boiler is a kind of boiler equipment that uses electric energy. After the boiler is running, it is a product that is completely free of pollutants and can be described as an environmental protection pioneer product.

Electric steam boiler equipment has many advantages, and at the same time, the performance of the boiler has also changed. In order to ensure the safe use of the equipment and extend the service life, many boiler technical engineers from Zhengzhou Fangkuai Boiler Co., Ltd. have accumulated years of research and accumulated correct installation and commissioning Some experience will be passed on to everyone for free now.

First of all, when the electric steam boiler leaves the factory, the staff should carefully check whether the physical quantity and the list details are exactly the same, and the integrity of the equipment must be ensured. After arriving in the installation environment, the equipment and components need to be placed on a flat and spacious ground to avoid damage to the brackets and sockets. It is also very important that after the electric steam boiler is fixed, you should carefully check whether there is a gap in the place where the boiler is in contact with the base, ensure that the seams are tight, and that the gaps must be filled with cement. When installing, the most important part is the electrical control cabinet. You need to connect all the wires in the control cabinet to each motor before installing.

Secondly, before the electric steam boiler is officially put into use, a series of commissioning tasks need to be carried out. The two key steps are to raise the fire and supply the gas. The fire can only be carried out after a comprehensive inspection of the boiler without any leaks in the equipment. During the process of the fire, the temperature must be strictly controlled, and the temperature must not be increased too quickly to avoid uneven heating of each component and affect the service life. At the beginning of the air supply, the heating pipe operation must be performed first, that is, the steam valve is slightly opened to allow a small amount of steam to enter, which has the effect of preheating the heating pipe, and at the same time, pay attention to the normal operation of each component.

After the above steps, the electric steam boiler can basically be used normally.

The electric steam boiler is a big star product of Fangkuai Boiler manufacturer. Once it was introduced to the market, it got an extremely warm response. And we have set up more than 200 after-sales service outlets in many places across the country to ensure that it can better serve customers aftersale service provided. So, what are the advantages of electric steam boilers produced by Fangkuai boiler manufacturers?

First, the security is extremely high
       The boiler has various safety protection mechanisms such as leakage protection, water shortage protection, grounding protection, overpressure protection, overcurrent protection, power supply protection, etc. to ensure that the boiler can operate safely and stably.
       1. Leakage protection: When leakage occurs in the boiler, the power is cut off in time through the leakage circuit breaker to ensure personal safety.
       2. Water shortage protection: When the boiler is short of water, cut off the control circuit of the heating tube in time to prevent the dry burning damage of the heating tube. At the same time, the controller issues a water shortage alarm indication.
       3. Grounding protection: When the boiler shell is charged, the leakage current is conducted to the ground through the grounding wire to ensure personal safety. Generally, the protective ground wire should be well-connected to the ground. Angle irons and steel pipes buried in the ground are usually used as grounding bodies. The grounding resistance must not be greater than 4 ohms.
       4. Steam overpressure protection: When the boiler steam pressure exceeds the set upper limit pressure, the safety valve is activated to release the steam and reduce the pressure.
       5. Overcurrent protection: When the boiler is overloaded (the voltage is too high), the leakage circuit breaker is automatically opened.
       6. Power supply protection: Reliable power-off protection is performed after detection of over-voltage, under-voltage, and break fault states by means of advanced electronic circuits.

It is very convenient to operate
       1. After the power is introduced into the electric control box, the boiler will enter (or leave) the fully automatic operation state with one-click operation.
       2. The amount of water in the boiler is reduced, and the control system automatically replenishes water from the water tank to the boiler through the make-up pump.

Third, the boiler design structure is more reasonable
       In order to be able to use electric energy more reasonably and efficiently, Fangkuai Boiler manufacturers have divided the heating power into several sections, and the controller automatically turns on (cuts off) the cycle. After the user determines the heating power according to the actual needs, he only needs to close the corresponding leakage circuit breaker ( Or press the corresponding switch). The segmented cycle switching of the heating pipe reduces the impact of the boiler on the power grid during operation.

Fourth, the boiler runs more reliably
       1. The body of the boiler is backed by argon arc welding, and the cover surface is welded by hand, which is strictly inspected by X-ray inspection.
       2. The electric steam boiler uses steel and is selected in strict accordance with national manufacturing standards. 3. The accessories used in electric steam boilers are selected from high-quality products at home and abroad and tested by the test furnace to ensure the long-term normal operation of the boiler.