Deoxygenation is an indispensable step in boiler equipment, which is essential for the internal corrosion prevention and normal operation of the boiler. So after we purchase the deaeration equipment, how can we ensure that it will operate normally? Listen to the professional boiler technical engineer of Zhengzhou Fangkuai Boiler Factory to answer you.

(1) 　When the unit is in normal operation, close the two electric shut-off valves on the exhaust pipe on the top of the deaerator, and the exhaust steam is discharged through the throttle orifice.

(2) When the steam turbine load rejection, when the extraction steam pressure of the unit entering the deaerator is less than 0.15MPa”, the extraction valve should be automatically closed, the backup steam source should be opened urgently, and automatic pressure adjustment should be used to maintain the deaerator at a constant pressure under the pressure of 0.15MPa. run. When the feed water pump is out of service, the standby steam source is turned off, the inlet and outlet valves are closed, and the deaeration equipment enters a shutdown state.

(3) If the oxygen content of the effluent water is found to be unqualified under normal operation of the boiler deaeration equipment, the opening degree of the exhaust valve can be opened appropriately.

(4) The water level should be constantly monitored during operation to keep it at the normal water level. When the water level is too high or too low, the automatic water level regulator should act. If a malfunction occurs, it should be dealt with in time.

(5) During normal operation, various valves, water level gauges, pressure gauges, thermometers, etc. should be complete, sensitive and reliable, and should be checked frequently.

(6) Detect and record the operating pressure, temperature, water level, oxygen content of the effluent water and output parameters of the deaeration equipment at regular intervals according to the requirements of the operating regulations.

Energy saving is very important for oil-fired and gas-fired boilers, which is related to the operating cost of the company's investment in the boiler. Zhengzhou Fangkuai Boiler Factory has summarized the following technical measures that can make fuel and gas boilers more energy-saving for your reference and application.

1. The boiler should make full use of variable frequency speed regulation technology. When the boiler water pump and fan are selected, a certain margin is considered in the rated load. Therefore, in fact, when the boiler is running, the flow rate of the fan and the water pump is less than the rated flow rate of the equipment, and they need to be adjusted. In the past, adjustments were all based on throttling, that is, closing the opening of the inlet and outlet throttle valves or baffles to reduce the flow rate, but the motor power did not decrease significantly. Frequency conversion speed regulation is to reduce the speed of the motor through the inverter, and the output power of the motor is reduced. Variable frequency speed regulation is used for fans and water pumps, which can generally save 30% to 40% of electricity. Its investment can be recovered after two heating seasons. At the same time, due to the reduced speed operation, it reduces mechanical wear, extends bearing life, and improves mechanical reliability. sex.

2. Reasonably use the automatic control technology of the boiler. During boiler operation, automatic control can improve boiler efficiency and save energy. In recent years, automatic control and microcomputer monitoring technology have developed rapidly. There are many automatic control devices for the water level of the drum and the water supply. The automatic control and microcomputer control of the combustion process are more commonly used in oil and gas boilers. For layer burning furnaces, some boilers The room is monitored by a microcomputer, and manual adjustment has also received good results. The automatic control of the boiler and the microcomputer monitoring instrument should be based on the principle of simplicity and practicality.

3. Adopt condensing waste heat recovery boiler technology. In traditional boilers, the exhaust gas temperature is generally 160-250°C, and the water vapor in the flue gas is still in a superheated state, and it is impossible to condense into liquid water and release the latent heat of vaporization. As we all know, the boiler thermal efficiency is calculated based on the low calorific value of the fuel, without considering the heat loss of the latent heat of vaporization in the high calorific value of the fuel. Therefore, the thermal efficiency of traditional boilers can only reach 87% to 91%. The condensing waste heat recovery boiler reduces the exhaust gas temperature to 50-70°C, fully recovers the sensible heat in the flue gas and the condensation latent heat of water vapor, improves the thermal efficiency, and the condensed water can also be recycled.

For the majority of users and friends, it is very important to purchase a boiler that can save energy and reduce emissions when purchasing a boiler. This is related to the cost and cost-effectiveness of the subsequent use of the boiler. So when you buy a boiler, how should you see whether the boiler is of an energy-saving type? Zhengzhou Fangkuai Boiler Factory has summarized the following aspects to help you better choose the boiler.

1. When designing the boiler, the reasonable selection of equipment should be carried out first. In order to ensure the safe and energy-saving of industrial boilers to meet user requirements, it is necessary to select the appropriate boiler according to the locality, and design the boiler type according to the scientific and reasonable selection principle.

2. When selecting the boiler type, the fuel of the boiler should also be selected correctly. The type of fuel should be selected reasonably according to the type of boiler, industry, and installation area. Reasonably mix coal so that the moisture, ash, volatile content and particle size of the coal meet the requirements of imported boiler combustion equipment. At the same time, encourage the use of new energy sources such as straw briquettes as alternative fuels or blended fuels.

3. When choosing fans and water pumps, we must choose new high-efficiency and energy-saving products, and we should not choose backward and obsolete products; match water pumps, fans and motors according to the operating conditions of the boiler to avoid the phenomenon of "big horse-drawn carts". The low-efficiency and high-energy consumption auxiliary equipment should be modified or replaced with high-efficiency energy-saving products.

4. Boilers generally have the highest efficiency at 80% to 90% of the rated load. As the load drops, the efficiency also drops. Generally, the capacity of the boiler is 10% larger than the actual steam consumption. If the selected parameters are not right, according to the series standards, the boiler with the higher parameters can be selected. The selection of boiler auxiliary equipment should also refer to the above principles and avoid "big horse-drawn carts".

5. Reasonably determine the number of boilers. In principle, the boiler should be considered for normal maintenance and shutdown, and the number of boilers in the boiler room should not be more than 3 to 4.

When communicating with the technical engineers of Zhengzhou Fangkuai Boiler Factory, some users discovered that the thermal efficiency of the boiler equipment introduced by Zhengzhou Fangkuai Boiler Factory could exceed 100% and reach as high as 107%. What's the reason? Is it because the boiler manufacturer arbitrarily advocates for the sale of boiler equipment? Let's find out.

For oil and gas boilers, there are low calorific value and high calorific value. The low calorific value is the closest to the actual calorific value of an industrial boiler during combustion, and is often used in design calculations. That is to say, the efficiency of the original boiler does not consider the part of the latent heat of gasification that accounts for 11% of the exhaust gas. The thermal efficiency of general oil-fired gas boilers Between 90~92%. When the boiler efficiency is calculated based on the low calorific value, if the condensation technology is used to utilize the latent heat of vaporization and part of the sensible heat in the exhaust gas, the efficiency will be greater than 100%.

Is it necessary for oil and gas boilers to have a condenser? According to the TSG G0002-2010 "Regulations for the Supervision and Management of Boiler Energy Conservation Technology" promulgated by the General Administration of Quality Supervision, Inspection and Quarantine on August 30, 2010, these regulations are based on the "Special Equipment Safety Supervision Regulations" and "Energy Consumption Supervision and Administration Measures for Special Equipment" , Put forward clear requirements for energy-saving work in boiler design, manufacturing, installation, transformation, maintenance and use, which is of great significance to standardizing boiler energy-saving work.

Condensing technology has been widely recognized by the boiler industry in recent years. Take the oil and gas boilers launched by Zhengzhou Fangkuai Boiler Factory. After the addition of condensing technology, the operating efficiency of the boiler has risen sharply, reaching as high as 107%. How does condensing technology work? Come and see it with Zhengzhou Fangkuai Boiler Factory.

For oil-fired gas boilers, the heat emitted by a unit mass of fuel when it is completely burned is called the calorific value of the fuel. Fuel calorific value is divided into high calorific value and low calorific value. The high calorific value refers to the total heat released when 1Kg fuel is completely burned, including the latent heat of vaporization released by the water vapor in the flue gas that has condensed into water. When the latent heat of vaporization of water vapor in the flue gas is deducted from the high calorific value of the fuel, it is called the low calorific value of the fuel.

Obviously, the high calorific value is larger than the low calorific value in value, and the difference is the latent heat of vaporization of water vapor. Taking natural gas as an example, its high calorific value is about 9500 kcal/m3, and its low calorific value is about 8600 kcal/m3. The difference is about 900 kcal/m3, accounting for about 11% of the low calorific value.

Boiler equipment using condensing technology can re-use the high-temperature flue gas discharged from the boiler and recycle it into the operation of the boiler, thereby achieving the purpose of energy saving and emission reduction.

The history of hot water boilers can be traced back to a long, long time ago, and steam boilers have been popularized in the past 200 years, which has a certain impact on traditional hot water boilers. If the space available for the former is small, or subject to greater restrictions, people will quickly choose the latter soon. The area required by the steam boiler is also relatively small, only 60% of that of the hot water boiler, and it does not require special renovation plans and indoor layout adjustments. The steam boiler not only has the advantage of occupying a small space, but also consumes less water in the furnace. The boiler can produce steam within 5 to 7 minutes after starting in the cold state, while the hot water boiler is about 60 minutes after starting in the cold state. Steam can only be started after ~90min.

When the boiler is out of service for a long time, shutting down must also be considered. The steam boiler embodies energy-saving advantages when it is started, and can save 5% to 11% of energy on average; while the former still has energy loss under normal and continuous operation: heat radiation and source loss through the chimney. Moreover, after the hot water boiler is out of service for a long period of time, it will take a long time to return to normal working condition.

The hot water boiler can provide a large amount of high-pressure hot water, wet steam and superheated steam, but the pressure it can achieve is only 32 bar. Under today's technical conditions, the achievable hot water temperature can reach 240°C and the steam flow rate can reach 45t/h. From the current popular point of view, the use of a fast steam boiler to provide wet steam is the most ideal solution: compared with the wet steam provided by the former (relative humidity 2% to 3%), the relative humidity of the wet steam provided by the fast steam boiler is only 0.5%, which can reduce the hazards caused by steam condensation in the steam pipeline, and has very good heat transfer performance during use.

Enough steam due to the small amount of internal water and the thinner wall thickness of the furnace body can reach the predetermined steam pressure in a short time, and the pressure value can be kept stable when the load changes. It does not need to be monitored under certain working conditions. Because the steam boiler consumes less water during operation, it is classified as Class III or Class IV in the equipment operation safety level regulations. When using a hot water boiler, when the pressure and capacity of the boiler exceed certain specifications, you must apply for a license before putting it into production.

In boiler equipment, the formation of scale is the precipitation of solid substances from the supersaturated boiler water. A certain salt dissolved in the boiler water has a certain solubility. If the solubility limit is exceeded, the boiler water becomes a supersaturated solution of a certain salt. At this time, the excess part is dissolved out of the furnace water. So what are the effects of scale on the boiler? Are these effects positive or negative? The technical engineer of Zhengzhou Fangkuai Boiler Factory has something to say.

First of all, we must first understand what are the components of the scale in the boiler: 1. The fouling substances are mainly derived from the impurities contained in the feed water; 2. The impurities include the dissolved, colloidal or suspended matter in the feed water; 3. Common There are calcium carbonate, calcium sulfate, calcium silicate, magnesium hydroxide, etc.; 4. Under special circumstances, iron scale, oil scale or other organic scales may also be generated.

Secondly, it is necessary to have a certain understanding of the distribution law of scale in the boiler: 1. Generally there is secondary scale in the header; 2. The scale accumulated at the bottom of the drum is generally the scale that falls off the smoke pipe; 3. The formation near the water supply pipe The scale is generally dominated by carbonate salt; 4. The mixed scale of silicate or sulfate is usually generated in the water wall pipe; 5. When the water source is changed or the water treatment method is changed, a large amount of scale may fall off; 6. Boiler The scale is generally distributed on each heated surface; the scale formed on the non-heated surface is generally secondary scale.

For boiler equipment, the harm caused by scale is huge. Excessive scale will destroy the normal water circulation of the boiler, causing defects such as overheating, deformation, material deterioration, and cracks on the heating surface of the boiler. In severe cases, it will also reduce the thermal efficiency of the boiler, increase the production and equipment maintenance costs of the enterprise, and cause safety problems, causing personal injury and death.

How much gas can a 1 ton steam boiler produce per hour? Generally speaking, a 1 ton steam boiler means that it can produce 1 ton of steam per hour, and a 1 ton steam boiler can produce 1 ton of steam per hour when operating at full load. However, in the actual application process, leakage and sewage discharge may occur, and the loss rate caused is in the range of 1 to 5%. Although the leakage can be reduced by improving the sealing degree, the sewage discharge is unavoidable. From this point of view, the amount of steam produced by a 1-ton boiler per hour is closely related to the quality of the boiler and the actual operation of the user.

Zhengzhou Fangkuai Boiler Factory has launched a wide range of steam boiler fuel coverage, which can use gas fuel, oil fuel and electricity. There are dozens of boiler models for users and friends to fully choose. The gas-fired steam boilers, oil-fired steam boilers, and electric steam boilers introduced have outstanding performance in terms of quality and operating efficiency.

What is the gas consumption per hour of a 1 ton gas-fired steam boiler operating?

The calculation formula for gas consumption of gas boiler is: gas consumption of gas boiler (per hour) = gas boiler power * time / fuel heating value / gas boiler heating value utilization rate. The power of a 1 ton gas boiler is 0.7MW, the calorific value of the fuel is calculated at 35.53MJ/N per cubic meter, and the thermal efficiency of the boiler is calculated at 98%. Then, the consumption of 1 ton natural gas boiler in 1 hour = 0.7MW*3600 seconds/35.53MJ/Nm3/98%. According to the theoretical data formula, the gas consumption of 1 ton natural gas boiler is about 72.37 cubic meters. At the same time, it can be found from the above formula that the gas consumption of the boiler is also affected by the heating value of the fuel and the thermal efficiency of the boiler.

It can be seen that whether it is "How much gas can a 1-ton steam boiler produce per hour?", "What is the gas consumption per hour of a 1-ton gas-fired steam boiler operating?", etc., they are all related to the operating efficiency and overall quality of the boiler. . When purchasing steam boilers, you must compare them in multiple dimensions. If you only look at the price, you will inevitably be a bit one-sided.

If you have doubts about boiler equipment such as "How much gas can a 1 ton steam boiler produce per hour?" and "What is the gas consumption per hour of a 1 ton gas steam boiler operating?", you can directly consult Zhengzhou Fangkuai Boiler Company for free. Our technical engineers will serve you wholeheartedly.

The chemical industry spreads all over my country's urban areas and plays an important role in my country's socialist construction. Steam boiler is one of the equipment often used in the production process of the chemical industry. The output high-temperature steam is an indispensable heat source and power source for many chemical industry manufacturers. For chemical enterprises, they will be very cautious when choosing the type of boiler, not only to ensure that the boiler can operate normally, but also to ensure safety and stability. What type of boiler equipment is suitable for chemical plants? Zhengzhou Fangkuai Boiler Factory recommends for you.

First of all, the choice of boiler should be determined according to the working direction of the chemical enterprise. Under normal circumstances, most chemical companies used for normal temperature and pressure reactions do not need boiler equipment, while those used for high temperature and high pressure reactions need to use boilers for pressurization or heating, such as petrochemical and other organic chemical sites. boiler.

Zhengzhou Fangkuai Boiler Plant summarized some industries that steam boilers are applicable to, including but not limited to fertilizer plants, chemical plants, oil refineries, paint plants, rubber plants and other industries. It also has high requirements for the automation and intelligence of steam boilers. It is very beneficial for enterprise processing and production.

Judging from the successful experience of Zhengzhou Fangkuai Boiler Plant in cooperating with customers in the chemical industry over the years, for the chemical industry, the application frequency of using steam boilers is relatively higher, and the use of steam boilers in the entire chemical industry accounts for more than 60 %. If you want to know about the applicable furnace types and industry cases in the chemical industry, you can directly consult the technical consultant of Zhengzhou Fangkuai Boiler Factory or visit the website to check and understand.

In the foam production and processing process, there are many types of boilers used, but in combination with the foam production process, it is more convenient to use a steam boiler, and the choice of fuel is also more flexible. It can be selected according to local environmental protection requirements. Purchase gas, oil, electric steam boilers, etc. The use of gas-fired steam boilers is very beneficial in terms of energy saving and environmental protection or low nitrogen emission reduction, so it has also been favored and recognized by many foam manufacturers.

The gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory has advantages that other boiler models do not have.
       1. Very high economic performance
       The gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory is supplied with gas through pipelines, which has high safety and reduces the cost of enterprise fuel procurement, transportation and storage. The fuel is clean and environmentally friendly and has very low pollutants after combustion.
       2. Strong safety performance
       The gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory uses smart burners for fuel to burn in the furnace to release heat, which can automatically adjust the fuel and air volume of large and small fires. In addition, the boiler has multiple protection measures and can monitor operation failures in real time. , Alarm and data storage, for maintenance reference of technicians.
       3. Higher convenience
       The gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory is equipped with PLC touch screen control. The boiler can be automatically started and stopped by simple settings, and unattended operation can be realized.
       4. Stronger environmental protection
       The gas boilers launched by Zhengzhou Fangkuai Boiler Factory have outstanding environmental protection effects. Natural gas is fully burned to form carbon dioxide and water. Equipped with low-nitrogen combustion equipment can make nitrogen oxides below 30 mg per cubic meter.
       5. Higher thermal efficiency
       The gas-fired steam boiler launched by Zhengzhou Fangkuai Boiler Factory uses aluminum silicate thermal insulation material, which greatly reduces boiler heat loss, installs high-efficiency energy-saving devices to fully absorb high-temperature flue gas at the tail of the boiler, heats the boiler water to increase the water supply temperature, and reduces fuel consumption.

Agriculture occupies an important position in our country, providing people with all aspects of food, clothing, housing and transportation. Fertilizers are very important to agriculture and are related to the quality of agricultural product harvests. What kind of steam boiler is better to use in the process of fertilizer processing in a fertilizer plant? Zhengzhou Fangkuai Boiler Factory has something to say.

The heat energy that needs to be used in the process of fertilizer processing in the fertilizer plant must meet the following requirements:
       1. A large number of different specifications and types of steam are required to provide heat and be used as raw materials for production; 2. Need a lot of driving power to compress gas and pump fluid;
       3. There is a large amount of production process heat available for recovery and heating of feed water and steam generation, which consumes a lot of work on compressed gas.

The high-temperature steam produced by the steam boiler is one of the indispensable heat and power sources in the process of fertilizer processing in the fertilizer plant. The automation of the steam boiler operation not only reduces the labor intensity of the workers, and ensures the safe and stable operation of the equipment, but more importantly, it greatly improves the fuel combustion efficiency and has a good effect on saving energy.

Zhengzhou Fangkuai Boiler Factory's special oil-fired gas steam boiler for the chemical fertilizer plant is not only highly automated and easy to operate, but also can supply steam at a constant pressure to meet the new national air pollution emission standards, and there is no pressure to use in any area.

For power plants, a large amount of kinetic energy is also needed to drive the equipment to generate electricity. Boiler equipment is one of the indispensable equipment in power plants, and attention must be paid to the selection and use of the boiler. Which type of boiler is better for power generation? Zhengzhou Fangkuai Boiler Factory will answer for you.

At present, there are many classifications of boilers, which can be classified according to various forms such as boiler structure, use, medium, and fuel, as shown below.
       1. According to the flow of flue gas in the boiler: water tube boiler, shell boiler (fire tube boiler), water and fire tube combined boiler; 2. According to the way the drum is placed: vertical boiler and horizontal boiler;
       3. Divided by purpose: domestic boilers, industrial boilers, power station boilers;
       4. Divided by medium: steam boiler, hot water boiler, steam and water boiler, organic heat carrier boiler;
       5. According to the installation method: quick installation boiler, assembled boiler, bulk boiler;
       6. Classified by fuel: coal-fired boilers, oil-fired boilers, gas boilers, waste heat boilers, electric heating boilers, biomass boilers; 7. According to water circulation: natural circulation, forced circulation, mixed circulation;
       8. According to pressure: normal pressure boiler, low pressure boiler, medium pressure boiler, high pressure boiler, ultra high pressure boiler;
       9. According to the number of boilers: single-drum boiler, double-drum boiler;
       10. Set inside or outside the boiler according to combustion: internal combustion boiler, external combustion boiler;
       11. According to the flow mode of the working fluid in the evaporation system, it can be divided into natural circulation boilers, forced circulation boilers, once-through boilers, etc.;
       12. Classification by manufacturing level: Class A, Class B, Class C, Class D, Class E (according to the pressure of the manufacturing boiler).

Which boiler model is better for a power plant depends on the specific needs and actual conditions of the power plant. A professional boiler manufacturer’s technical engineer will tailor the appropriate boiler equipment for you to meet future power generation needs.