Boiler Knowledge

What is the difference between a hot water boiler and a steam boiler? How to choose suitable boiler

Hot water boilers and steam boilers are relatively common boiler equipment on the market at present, and the output media of the two are different, and the application places are also different. Hot water boilers are more suitable for air conditioners, heaters, low temperature ovens, drying equipment, hot water tanks for textile printing and dyeing, and various low temperature heating, air conditioning coils and heat exchange equipment. Steam boilers are suitable for industrial sites such as chemicals, building materials, and food processing. What is the difference between a hot water boiler and a steam boiler? How to choose suitable boiler equipment as a user? Zhengzhou Fangkuai Boiler Factory will answer for you.

1. Hot water boilers generally have a low heat medium temperature and a large temperature difference with the flue gas. The boiler exhaust gas temperature is relatively low, so the efficiency of the boiler will be higher.

2. The hot water boiler adopts a closed hot water system, the amount of make-up water is small, the blowdown rate is much smaller than that of the steam boiler, and the water waste is also small. In addition, the boiler water quality requirements are low, and the water treatment costs are low.

3. The heat capacity of the water in the hot water boiler is large, the hot water capacity in the system is large, and the heat storage capacity is strong. When the thermal or hydraulic operating conditions fail for a short time, it will not cause significant fluctuations in the heating conditions.

4. The hot water heating system can be pumped for long-distance transportation, with small heat loss and large heating radius, which can meet the requirements of urban central heating planning.

2021-11-21 15:17:53

Some effective energy saving and emission reduction measures for industrial steam boilers

In the boiler market, there are still some industrial steam boilers with low thermal efficiency, energy can not be effectively used, resulting in waste; boilers are old and the automatic control level is not high, which affects boiler combustion efficiency; energy conservation supervision is not in place, and many other problems. The industrial steam boiler launched by Zhengzhou Fangkuai Boiler Factory adopts the latest technology, which can not only improve the operating efficiency of the boiler, but also fully reduce the emission of pollutants, which is in line with my country's current sustainable development policy. At the same time, the boiler technical engineer of Zhengzhou Fangkuai Boiler Factory also summarized the following effective energy-saving and emission-reduction measures for industrial steam boilers.
       (1) Modification of fuel type. At present, the operating efficiency of coal-fired boilers can reach between 50-60%, while the efficiency of oil-fired gas-fired boilers can reach more than 90%. Although the unit price of oil and gas fuel is more expensive than that of coal, in general, it is still The use of oil and gas boilers is more energy-saving and money-saving.
       (2) Reform the combustion system. Adding full premixing or FGR combustion technology to the boiler to reuse the fuel heat energy can not only reduce the temperature of the flue gas emitted, but also allow the fuel to be more fully utilized.
       (3) The use of frequency conversion technology to transform boiler auxiliary equipment.
       (4) The automatic control system is adopted to adjust the output heat of the boiler in real time to achieve the purpose of energy saving. (5) Recover condensed water.
       (6) The boiler is updated and replaced with a new boiler to replace the old boiler.

2021-11-19 15:16:22

Properly use softened water treatment to extend the service life of industrial boilers at least 5 ye

For the water flowing into the industrial boiler, it must be softened, which can effectively reduce the formation of scale, which is good for the long-term operation of the boiler. The Zhengzhou Fangkuai Boiler Factory said that the correct use of softened water treatment prolongs the service life of industrial boilers by at least 5 years.

There are many ways to soften industrial boiler water, but the most common method is ion exchange. The characteristic of ion exchangers is that the resin must be regenerated frequently;

A. When the hardness of the effluent water exceeds the standard, it must be stopped and regenerated;

B. The method of cation resin regeneration is to soak the resin in salt water for about two hours, let the salt water dry, and then backflush with clean water, you can continue to use it;

C. The method of judging whether the exchange resin is invalid (when must be regenerated) is very simple:

Wash your hands with a piece of soap in the raw water (water before treatment). Use the same method to wash your hands in the finished water after treatment. Compare the feel of the two washes. If the water is soft, the hands are very slippery, and the soap always washes. No, the processor is normal at this time and does not need to be regenerated. On the contrary, if the two feels are the same, it means that the processor has failed and can be regenerated at this time.

 

D. Other types of processors can also use this method to adjust the amount of salt or other regeneration parameters.

2021-11-17 15:16:02

What are the more mainstream boiler equipment in use now?

There are many types of boilers, which are used in various industries and have corresponding uses and characteristics. What are the more mainstream boiler equipment currently in use? How to choose a boiler as a boiler user? Zhengzhou Fangkuai Boiler Factory summarizes the following types of boiler equipment.

1. Oil and gas boiler
       Advantages: Efficient, clean, environmentally friendly, no manual operation is required, only monitoring is required, less area, no transportation fuel, no need to dispose of coal ash, because natural gas is burned without impurities, there is no corrosion to the boiler and related accessories, and the boiler has a long life , The stipulation is 15 years, but basically it can be used for a long time. It is now the mainstream boiler, and natural gas is also vigorously promoted by the environmental protection department and the government.

2. Coal-fired boiler
       Advantages: The boiler purchase cost is low.
       Disadvantages: 1. Coal yard and coal ash require a large amount of land.
       2. Furnace workers need 4 to 8 people for a boiler.
       3. The boiler room and coal yard are very dirty.
       4. It is noisy and emits a lot of dust, which disturbs the people.
       5. The environmental protection department will often come to check. If you don't pay attention, it will be found that the emission exceeds the standard, the furnace will be shut down for maintenance, and the fine will be very troublesome.
       6. Coal contains a lot of sulphur, which corrodes the boiler heavily, and it is basically unusable after 10 to 15 years.

Coal-fired boilers have serious air pollution. As the country pays more and more attention to environmental protection issues, the emission requirements for coal-fired boilers are stricter. Many urban areas have stopped the approval procedures for coal-fired boilers.

Therefore, Zhengzhou Fangkuai Boiler Factory still recommends that you install a natural gas boiler. Although you use a little more fuel cost, in the actual operation process, you can save a lot of things, while saving land, and the environment is clean.

2021-11-15 15:14:00

Which fields are applicable to boilers such as steam boilers, hot water boilers, and biomass boilers

According to different classification standards, there are many classifications of boiler equipment. According to the structure, the boiler has vertical and horizontal; according to the delivery method, it can be divided into quick installation, assembly, and bulk; according to the output medium, it can be divided into steam, hot water, and heat carrier; if it is divided by fuel, there is coal burning , Oil, gas, electricity, biomass, and other boilers. Steam boilers, hot water boilers, biomass boilers, and other boilers are boilers that have been consulted more recently. Zhengzhou Fangkuai Boiler Factory will come to tell everyone in which fields these types of boilers are suitable for party building.

Objectively speaking, steam boilers and hot water boilers are boilers that use water as the medium; the difference between the two is: the steam boiler produces steam with certain parameters, while the product of hot water boilers is hot water with certain parameters; the functions are different, Steam boilers have a wide range of applications and are suitable for all areas of production and life; hot water boilers are generally only used for heating, bathing, and domestic hot water in life; in the design, manufacture, installation and use of boilers, steam boilers require More stringent than hot water boilers.

Biomass boilers specifically refer to boilers whose fuel is biomass. Due to the limitation of fuel supply, the capacity of boilers is generally small; they are used for small-scale heating, domestic hot water, and bathing, but the existence of larger tonnage boilers is not ruled out.

You can choose the appropriate boiler equipment reasonably according to the characteristics of these types of boilers and the needs of your own industry.

2021-11-11 14:28:15

Before starting the steam boiler, which parts must be ensured for safety?

The steam boiler is a pressurized equipment. The majority of users and friends must confirm the boiler and its various components before using it to avoid safety problems, which will delay normal use and cause varying degrees of loss. Zhengzhou Fangkuai Boiler Factory summarized the following components that need to be ensured before starting the steam boiler for your reference.

1. Before using the steam boiler, be sure to check whether the internal parts of the steam boiler, such as the steam pipe, pressure gauge, and water level gauge, are in a safe and intact state. The water in the steam boiler must have been softened. Yes, the water must be kept clean and it must not contain grease. Regarding the safety valve of the steam boiler, it must not be adjusted arbitrarily, and it can be ensured to the best degree, which does not need to be adjusted at any time. The exterior of the product should be cleaned at all times.

2. In the process of using the steam boiler to increase the pressure, be sure to check whether the gas valve is sensitive, and check the height of the water level. Remember to keep the water level at two-thirds of the water level. This is very important. Yes, too high or too low is not allowed, otherwise there will be a danger of explosion. If you find that the bladder of the steam boiler is burning red, you should immediately stop using the steam boiler, because in this case, if If you continue to use the steam boiler, it is easy to damage the steam boiler products.

3. At the same time, when using a steam boiler, you should always pay attention to keeping the inside and outside of the steam boiler clean, and a series of maintenance work on the steam boiler must be done.

2021-11-09 14:18:09

When the hot water boiler always needs to make up water, what's wrong with the boiler?

Under normal circumstances, the hot water boiler only needs regular water replenishment. If the boiler frequently needs a large amount of water replenishment, it means that there is a problem inside the boiler, which needs to be discovered and solved in time. Zhengzhou Fangkuai Boiler Factory has summarized the following possible reasons when the boiler always needs to make up water for your reference.

Phenomenon: The display value of the pressure gauge drops frequently.
       The water pressure of a normal boiler must be greater than 0.8bar, and the water supplement period should be more than 3-6 months. The boiler is connected with the heat dissipation system in the room to form a heating system. The water pressure gauge on the boiler shows the pressure value of the entire heating system, so make-up water is to make up the entire heating system. Therefore, in most cases, the frequent replenishment of water is a possible problem in the heating system, not a boiler problem.

Reason 1: the newly commissioned heating system
       The newly commissioned heating system had a lot of air in the early stage, and the automatic exhaust valve of the system caused the pressure to drop, which required multiple water replenishment.

Reason 2: There is a leak in the heating system
       The joints of the exposed pipes or buried pipes of the heating system may be leaky and have little leakage. Since the boiler is in the heating state, the entire system is hot, so the leaked water evaporates quickly. It is difficult to spot the leaks with the naked eye.
       If there is a boiler pressure drop and the leak cannot be found, it is recommended to check whether the boiler is leaking.
       Inspection Method:
       Stop running the hot water boiler, close the heating supply and return water valve under the boiler (make sure the valve can be closed), disconnect the boiler from the system directly, fill the boiler to an integer value, and observe for a period of time to see if there are fluctuations in the water pressure gauge. This method can simply determine whether it is a boiler problem or a water leakage problem in the heating system pipeline behind the valve.

Reason 3: Failure of the expansion water tank in the boiler
       Failure of the expansion tank will cause the system pressure to exceed 3 bar when the hot water boiler is heating up, and the safety valve will be protected by water leakage. Please contact the after-sales team of the boiler manufacturer for replacement.

Reason 4: The water supply valve is not closed tightly
       If the water supply valve is not closed tightly and the pressure of the tap water pipe network is low, the system will lose pressure when using domestic hot water.
       Solution: If there is frequent water replenishment, you need to contact the after-sale boiler factory to check the heating system as soon as possible to avoid damage to the hot water boiler caused by long-term water replenishment.

2021-11-07 14:16:32

Compared with ordinary boilers, what are the advantages of CNC boilers?

Compared with ordinary boilers of manufacturers on the market, CNC boilers are more intelligent and easier to operate, which saves labor costs and makes people more comfortable to use. Compared with ordinary boilers, what are the advantages of CNC boilers? Zhengzhou Fangkuai Boiler Factory will answer for you.

Common points of ordinary boilers and numerical control boilers: the heating surface is called the boiler, the combustion chamber is called the furnace, and both have temperature, pressure and flow detection instrument probes. The difference is the control method and the method of executing the control instruction.

Ordinary boilers read the test instrument data manually and then use brain knowledge and experience to judge whether the terms of the technical specification and operating procedures deviate from it? The deviation direction is becoming bigger and smaller, becoming positive and negative? Then adjust the deviation manually.

The numerical control boiler adopts the program controller to automatically collect the test data of the process parameter probe and compare the memory setting data. After the comparison calculation, the electric or pneumatic actuators are used to operate such as automatic water filling, automatic coal filling and oil filling, and automatic air filling. Being unattended is the main advantage. Domestic gas-fired hot water boilers are all such things. After ignition and operation, you only need to set the hot water outlet temperature at about 50-60 degrees to maintain the room temperature above 20 degrees. Winter heating is not suitable.

2021-11-05 14:15:48

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