In recent years, the frequency of use of gas-fired steam boilers has become higher and higher. This is mainly because this type of boiler is very environmentally friendly and its operating efficiency is also very high. It is completely integrated with energy saving and environmental protection. Zhengzhou Fangkuai boiler manufacturers found in the process of contacting users that many users are not very familiar with whether their own enterprises need to use gas-fired steam boilers. We will explain the industries in which gas-fired steam boilers can be used.

In the scope of application of gas-fired steam boilers in life, boilers mainly produce hot water and steam. For many enterprises, steam is the most used. There are many close relationships with boilers in life. Therefore, we need to have a general understanding of the scope of application of gas-fired steam boilers in life. The main classifications of gas steam boilers are:

1. After the heat exchanger, the heat of the steam is converted into water, and then the water is heated, and then used for heating, bathing and production.

2. It is used for disinfection in food processing, pharmaceutical industry, filling bottles, etc., and can be used for meat and steaming in the food industry. Brewing is also made with steam.

In addition, in the petrochemical industry, steam can heat oil and add fluidity. Steam is also used in the petrochemical production process.

In some import and export enterprises, gas-fired steam boilers are widely used, such as foam boards for thermal insulation, which produce steam to heat raw materials for foaming. Furniture made of wood must be dried with steam to make furniture. The aerated bricks of the building should also be dried with steam, and can also generate electricity and so on.

Users who are using steam boilers have noticed that when the boiler is difficult to make up water, the boiler should be checked in time to find the problem and solve it. There is also a certain way to solve the problem of water supplementation. Let Zhengzhou Fangkuai boiler manufacturer tell you the answer.

For steam boilers that have difficulty in making up water, it is generally necessary to analyze whether the water supply is difficult or the water is fast. If the water supply is difficult, you can first consider whether there is a problem with the water pump, and whether the sewage valve is not closed tightly or whether there is a leak on the boiler body.

The main reasons for the difficulty of making up water for steam boilers are as follows:

1. The head of the feed water pump drops. Due to the internal leakage and wear of the water pump, the pump head naturally drops. You can close the water outlet of the water pump to see if the pressure gauge reaches the pump parameters. If it does not, it means the pump lift drops;

2. The resistance of the water supply pipeline is increased. The main problems are the scaling of pipes and the failure to open the water supply control valve. Disassemble the regulating valve and check;

3. The resistance of the economizer becomes larger. Mainly caused by scaling and leakage on the inner wall of the economizer. Disassemble the economizer elbow to see;

4. Due to the scale, the water outlet on the water distributor in the upper drum sticks to the water scale. This is a common fault. You can open the upper drum to check;

5. It is also a problem that is not easy to find, that is, the sewage valve is not closed tightly or the continuous sewage discharge volume increases. Touch the regular blowdown pipe. If it is very hot, it means that the boiler is losing water, which will also be reflected in the boiler water supply difficulties.

If it is a steam boiler, the water level drops faster than usual. Check whether the blowdown valve is closed tightly and whether the heating surface pipe on the boiler body has water leakage (corrosion perforation).

The heating season of 2020 is coming. For the general public, it is a very happy thing to feel warm in the cold winter. For heating companies, there are many things to consider. Heating area, heating method, heating method, etc., are all issues that need to be considered.

According to statistics from the Zhengzhou Fangkuai boiler manufacturer, most heating companies and heating units currently use hot water boilers for heating instead of steam boilers. Let's take a look at why we prefer to use hot water boilers for heating and why it is more energy-efficient and environmentally friendly to use hot water boilers for heating.

Generally, hot water boilers are used for heating, except for those that require less production processes to use steam. Because it is more energy-saving and environmentally friendly than using steam boilers. First of all, in terms of fuel consumption, hot water boiler heating saves 20-40% of fuel compared with steam boiler heating. This amount is very considerable. There are two reasons to summarize: one is that there is no heat loss due to condensate and secondary transpiration; the other is that the hot water heating pipeline is selected with special heat preservation materials, and the pipeline is as thin as possible under the condition of satisfactory demand, and the heat loss is small. . Relatively speaking, the heat loss caused by steam leakage in steam heating pipes is relatively large.

Hot water boilers require only a few regular blowdowns. Another advantage of hot water heating is that it can flexibly adjust the quality and temperature of hot water. When the outdoor temperature is low, it is necessary to increase the temperature of the hot water to meet people's needs. When the outdoor temperature is high, The ability to lower the temperature of the hot water not only satisfies people's needs, but also achieves the effect of energy saving and environmental protection. And its system repair costs are also low. Hot water boilers can provide heating for residential areas tens of kilometers away. For example, the hot water boilers launched by Zhengzhou Fangkuai boiler manufacturers have a good performance in this respect.

After purchasing a steam boiler, many users do not allow the boiler to run continuously throughout the year. They will decide whether they need to shut down or restart the boiler according to their company's demand for steam. So, what preparations need to be done before restarting the steam boiler? Zhengzhou Fangkuai boiler manufacturer reminds everyone that ventilation and purging must be carried out. As for the reason, let's look down.

Ventilation and purging before the start of the steam boiler is to avoid the remaining combustible gas or pulverized coal in the furnace after the previous shutdown. It may also be because the fuel system is not tight during the shutdown that the combustible gas or pulverized coal leaks into the furnace. When burning, once the torch is inserted into the furnace, if the concentration of combustible gas or coal powder is within the blasting limit, it will cause the furnace to blast, damage the furnace wall, and even cause personal injury. Before burning, start the induced and blower fans, insist on 10%-25% of the rated air volume, and control the ventilation time at about 5 minutes.

Although ventilation with large air volume cannot completely remove the combustible gas or coal remaining or leaking into the furnace, it can dilute the concentration of combustible gas or coal in the furnace to a lower limit far less than the blasting limit, and then ensure the boiler combustion Time equipment and personal safety. After the ventilation is over, the combustion should be carried out as soon as possible to avoid leakage of the fuel system, and the concentration of combustible gas or coal powder in the furnace will rise again to the blasting scale.

When you purchase steam boilers, you must have heard a suggestion from many boiler business personnel: equip the boiler with softened water treatment equipment. Why do business people emphasize water softening equipment many times? Let Zhengzhou Fangkuai boiler manufacturer tell you the answer.

First of all, we need to have a simple understanding of water softening equipment. Water softening equipment for steam boilers can also be called full-automatic sodium ion converters using ion exchange principles to remove calcium, magnesium and other scaled ions in the water. When the raw water containing hardness ions passes through the resin layer in the AC, the calcium and magnesium ions in the water will be replaced with the sodium ions adsorbed by the resin. The resin adsorbs the calcium and magnesium ions and the sodium ions enter the water, thus flowing out from the AC. Water is softened water with hardness removed.

Because the hardness of water is mainly composed and indicated by calcium and magnesium, cation exchange resin (water softener) is generally used to replace the Ca2+ and Mg2+ (the main components of scale) in the water. With the addition of Ca2+ and Mg2+ in the resin, the resin The effectiveness of removing Ca2+ and Mg2+ gradually decreases. After the resin absorbs a certain amount of calcium and magnesium ions, it must be regenerated. The regeneration process is to wash the resin layer with salt water in the salt box to replace the hardness ions on the resin, and then discharge the resin out of the tank with the regeneration waste liquid. It has recovered its softening communication function.

The working mode of the gas steam boiler is a device that uses the high heat required when the gas generates heat, and then burns the gas sufficiently. In the process of gas combustion, it needs to be mixed with a large amount of air, but it can be burned through different methods. Zhengzhou Fangkuai Boiler Factory has summarized the three combustion methods of gas-fired steam boilers. After comparison, you can see that the boiler using which combustion method is more suitable for your needs.

One is the diffusion combustion method, which does not mix in advance, but diffuses the gas at the nozzle mouth and then burns it. This kind of combustion method of gas boiler can achieve sufficient stability, and does not have high requirements for burning appliances, and the structure is simple and simple. However, due to the long flame, incomplete combustion is very simple, and carbonization is very simple in the heated area.

The other is a partial air combustion method that requires premixing. Part of the air and gas are mixed in advance, and then burned abundantly. The advantage of using this combustion method is that the burning flame is clearer and the thermal efficiency is higher; but the disadvantage is that it is unstable during combustion and requires higher control of combustion components. If it is a gas burner, it is very necessary to choose this kind of combustion method.

There is also a flameless combustion method that uniformly mixes the space before combustion with the gas in the gas boiler. When this method is used, the oxygen required by the gas in the combustion process does not need to be obtained from the surrounding air, and only needs to reach the combustion zone with the air mixture to complete the instantaneous combustion end.

Users can choose different combustion methods according to practical requirements, and then promote sufficient combustion, the effect of gas boilers can also be fully utilized, and the energy consumption required for production can also be reduced.

The direct effect of improving the thermal efficiency of gas-fired steam boilers is to reduce the operating input cost of the boiler, so it is very important for users who use the boiler. Zhengzhou Fangkuai Boiler Factory summarized some methods that can effectively improve the thermal efficiency of gas-fired steam boilers, let's take a look.

1. Reduce the exhaust temperature
       At present, the high exhaust gas temperature of industrial boilers in my country is one of the main reasons for the low thermal efficiency of boilers. When the exhaust gas temperature of small boilers drops by 15-20 degrees Celsius, and for large boilers by 15 degrees Celsius, the thermal efficiency of natural gas boilers increases by 1%. Therefore, it is necessary to try to recover the waste heat of the flue gas to lower the exhaust gas temperature, reduce the exhaust heat loss q2, and save fuel.

2. Feed water softening treatment and condensate recovery
       Boiler feed water softening treatment and condensate recovery are also measures to improve boiler thermal efficiency. The raw water contains various impurities and their fouling substances. If the water quality is not well treated, the boiler will foul. The thermal conductivity of scale is very low, so once the heating surface is scaled, the output of the natural gas boiler will decrease due to the increase of thermal resistance, coal consumption will increase, and the thermal efficiency of the boiler will decrease.

3. Keep the boiler running under rated load
       When the natural gas boiler is overloaded, because the amount of fuel must be added, the coal seam must be thickened, the speed of the grate will increase, and the air supply must also be increased to meet the demand for load increase. The thickening of the coal seam and the acceleration of the grate speed will cause the incomplete combustion of the solids to lose their addition. Because of the addition of the air supply, the flue gas stays in the furnace for a short time. Some combustible gases are discharged with the flue gas before they are burnt. The heat loss of gas incomplete combustion increases.

At the same time, when the operation is overloaded, the temperature in the furnace increases due to the thickening of the coal seam, and the temperature of the exhaust gas increases accordingly, which increases the heat loss of the exhaust gas. When the boiler is operating at low load, the amount of coal burned is reduced, and the temperature in the furnace drops, which makes the combustion conditions worse, and the incomplete combustion loses q3 and q4. When the boiler load is only 50%, it is difficult to maintain stable combustion in the furnace because the temperature in the furnace drops significantly. The heat loss is relatively increased during low-load operation, so boiler overload or low-load operation will cause the thermal efficiency of the boiler to decrease.

Users in the hotel industry need to use boilers for heating and heating. Taking into account the particularity of hotels and other places-the flow of people is relatively large, the requirements for heating boiler equipment are also relatively high. Zhengzhou Fangkuai boiler manufacturers have summarized some of the issues that users in the hotel industry need to pay special attention to when selecting heating boilers. Let's take a look.

First of all, when purchasing a gas boiler, you should consider the water consumption of the hotel or hotel: 1. Consider the water use of the hotel: guest rooms and other places where water is needed.
       2. There are a total of several buildings in the hotel, how many floors each building has, and how many rooms there are on each floor.
       3. Is there any possibility of heat recovery (air compressor, generator, injection molding machine, steam exhaust, etc).
       4. Prepare the installation site (length, width, orientation, and surrounding building conditions).

Secondly, we must consider the water supply form of hot water projects in hotels, hotels and other places.
       1. The independent solar water heater project has a large initial capital expenditure and relatively low operating cost, but it is easily affected by the climate.
       2. For the independent air energy water heater project, the initial capital expenditure is relatively large and the operating cost is low.
       3. The air energy solar water heater project has a large initial capital expenditure, the lowest operating cost, and is not affected by the climate. The combination of the two has the best effect.

It is more important to choose a professional manufacturer with excellent quality, outstanding reputation and high-end brand.

Nowadays, there are all kinds of gas boiler brand manufacturers on the market, and many companies have some problems, such as using unenvironmentally friendly materials to shoddy them, and problems such as no after-sales service after the installation of factory hot water engineering equipment. Therefore, you must choose a strong manufacturer when purchasing a gas-fired modular boiler.

Energy saving and emission reduction is the main direction of my country's current environmental protection. For users, energy saving can save a lot of investment and cost, and emission reduction is very good for the environment. Especially for industrial boilers that support the advancement of thermal power in industrial production, energy-saving and emission reduction show the technical level of boiler production. Following the successive implementation of the national energy conservation and environmental protection policy, traditional coal-fired industrial boilers have been gradually replaced by natural gas steam boilers, and an energy-saving and environmental protection innovation has taken place in the field of industrial thermal power.

In addition to transforming traditional industrial coal-fired boilers into natural gas steam boilers, methods can also be adopted to save energy in the operation of natural gas steam boilers. Zhengzhou Fangkuai boiler manufacturer summarized the following methods that can promote energy saving and emission reduction of gas steam boiler:

1. Reasonably select the rated power of natural gas steam boilers and the number of boilers according to the amount of steam required by industrial production. The higher the match between these two conditions and the actual use, the smaller the exhaust gas loss, and the more significant the energy saving.

2. Adequate touch of fuel and air: Let the right amount of fuel and the right amount of air form the best proportion for incineration, which can improve the incineration power of the fuel, but also reduce the emission of polluting gases and achieve the goal of two-tier energy saving.

3. Decrease the exhaust gas temperature of natural gas steam boilers: reduce the exhaust gas temperature of the boiler to use the waste heat generated in the exhaust gas. The power of the commonly used boiler is 85-88%, and the exhaust gas temperature is 220-230℃. If an energy saver is installed and the exhaust gas heat is used, the exhaust gas temperature drops to 140-150℃, and the boiler power can be increased to 90-93%.

4. Recovery of the heat of the boiler blowdown water: The heat in the continuous blowdown is used through heat exchange to increase the feed water temperature of the deoxidized water to the energy-saving intention of the natural gas steam boiler. At the same time, the energy-saving method of natural gas steam boilers can also reasonably recover the condensed water in the heating system and recover the heat of the condensed water for use.

If users use steam boilers and pressurized hot water boilers, they need to be sent to relevant departments for annual inspection. This is mainly to ensure the safety of boiler equipment. However, the annual inspection takes a certain time, which will delay our normal boiler. use. At present, Zhengzhou Fangkuai Boiler Factory has withdrawn a series of boiler equipment that can be used directly without annual inspection, saving users a lot of trouble.

The "Boiler Safety Technical Regulations" is not applicable to steam boilers with a designed normal water level and volume less than 30L, which means that there is no need to apply for registration in accordance with the above regulations, no need for operators to hold certificates for work, and no regular inspections.

When the normal water volume of a steam boiler is less than 50L, it belongs to a Class D boiler, which means that there is no need to register for use in accordance with the above regulations, no need for operators to hold a certificate to work, and no regular inspections.

Hot water or thermal oil boilers with a rated thermal power of less than 100kW do not need to register for use in accordance with the above regulations, do not require operators to hold certificates, and do not require regular inspections.

The design of steam boilers with normal water level volume <30L does not require special equipment production qualification, and steam boilers above 30L need to have special equipment production qualification

Hot water or thermal oil boilers with a rated thermal power greater than 100kW need to have special equipment production qualifications.

Although the boiler does not require annual inspection, our own inspection work is indeed indispensable, which is also to ensure that the boiler can operate safely.
       (1) Periodic inspections of boilers include external inspections when the boiler is in operation, internal inspections and water (withstand) pressure tests when the boiler is shut down;
       (2) The boiler user shall arrange the regular inspection of the boiler, and submit an application for regular inspection to the inspection and testing agency one month before the next inspection date of the boiler. The inspection and testing agency shall formulate an inspection plan.

Natural gas steam boilers are boiler equipment frequently used by users in recent years. The boiler uses natural gas as fuel, which is clean and environmentally friendly, and it is more convenient to use. So, for users, what aspects should they look at if they want to buy a good natural gas steam boiler? Let Zhengzhou Fangkuai Boiler Factory tell you the answer.

1. Brand: A brand is accumulated by the reputation of users, so we have to choose some powerful boiler brands, but don't blindly choose some small brands. It is difficult for many small-brand boiler plants to find after-sales service departments.

2. Function: The function of the steam boiler includes exhaust gas temperature and thermal efficiency. The higher the thermal efficiency, the better, and the lower the exhaust gas temperature, the better.

3. Efficiency: We must choose a manufacturer with good after-sales service before buying, because once the shortcomings appear, it will directly affect the production.

4. Price: What we need to compare is not only the price of the steam boiler, but also the accessories, operating costs, etc. of the steam boiler.

5. Safety: Safety is the most important element we need to consider, and safety is the basis for using boiler equipment.

6. Operation: Some steam boilers are more cumbersome to control, and they are not familiar with the operation after they are bought back. The efficiency of use cannot be improved.

7. Energy saving: Energy saving and emission reduction are related to the cost of our use, so we need to choose energy-saving and efficient steam boilers.

8. Speed: The speed of start-up will affect our production, so in general, the steam boiler will not be turned on every day. Assuming that the time for each launch is too long, then not only fuel but also production time is wasted.

9. Equipment: What we want to choose is not only a boiler body, but also other accessories such as water softening equipment, safety valves, sub-cylinders, and pump sets.

For gas-fired boilers, operational efficiency is defined as the percentage of the boiler's effective heat utilization per unit time as a percentage of the boiler's heat input, or as a percentage of the effective heat utilization per kilogram of fuel (solid and liquid), or per standard cubic meter (gaseous fuel).

The thermal efficiency of the gas-fired boiler refers to the percentage of the effective heat in the heat sent by the fuel. The thermal efficiency of modern gas-fired boilers is relatively high, at about 90%. By using the technologies of condensation, FGR and full premixed combustion, zhengzhou Fangke boiler manufacturer has achieved over 98% thermal efficiency of the gas-fired boiler, which can be said to be very energy-saving and economical.

The negative pressure gas boiler can guarantee the smoke circulation unobblocked, the induced draft fan draws the negative pressure, the blower takes in the air, the balanced ventilation, guarantees the sufficient oxygen content, improves the combustion efficiency! About wiring this is convenient boiler and the parameter that each kind of accessory equipment sees, convenient in boiler room operation control! They generally include solenoid valves, thermocouple thermometers, ammeters, flowmeters, contact water meters, and various alarm devices.

As for the gas boiler operation process, for different structures and models of the boiler, the operation mode is also different, but it is necessary to maintain the normal combustion, normal water level, normal temperature, normal pressure.