The use of thermal insulation materials in industrial boilers can effectively reduce the heat loss of the boiler, thereby improving the overall operating efficiency of the boiler. Related tests show that compared with boilers that do not use thermal insulation materials, industrial boilers using thermal insulation materials can save at least 20% of the input cost per year, which is enough to see the importance of thermal insulation materials to industrial boilers.

At present, there are many types of insulation materials on the market, mainly rock wool, aluminum silicate fiber cotton, etc.; aluminum chlorate fiber cotton is mostly used for boiler insulation.

So, what is the appropriate range for the thickness of the insulation material used in industrial boilers? The Qiugong of Zhengzhou Fangkuai boiler manufacturer will answer for you.

The insulation thickness of the thermal insulation material selected for industrial boilers needs to be calculated. It needs to be calculated according to the internal temperature, the external surface temperature requirements or the heat loss requirements. The heat preservation of the boiler body and pipes is generally between 100mm-200mm. If you feel this calculation method is more difficult, you can remember this sentence: if the internal temperature is high, keep it thicker, and if the temperature is low, keep it thinner.

The pressureless 10-ton gas-fired hot water boiler refers to the atmospheric hot water boiler. This type of hot water boiler has a very good sales volume in our Zhengzhou Fangkuai Boiler Factory and is deeply loved by users. This is the advantage of the pressureless hot water boiler. Are inseparable. Zhengzhou Fangkuai Boiler Factory has analyzed some places where pressureless 10-ton gas-fired hot water boilers are used to help everyone judge whether this type of boiler is suitable for their own enterprises.

First of all, let's talk about the advantages of a pressureless 10-ton gas hot water boiler.

There is no danger of explosion for the boiler, and supervisory inspection is not required; there is no need to consider the pressure relief problem of the boiler room; save steel and simplify the process; scrap boilers can be reused; cancel the water supply pump; power outage protection; durable; save user investment.

Therefore, it is possible to use a pressureless 10-ton gas hot water boiler for heating and heating places with a large flow of people, such as learning heating, hotel heating and bathing, shopping mall heating, and so on.

Boiler parameters are the main indicators of boiler performance, including boiler capacity, steam pressure, steam temperature, feed water temperature, etc.

The boiler capacity can be expressed by the rated evaporation capacity or the maximum continuous evaporation capacity. The rated evaporation is the amount of steam continuously produced per unit time under the specified outlet pressure, temperature and efficiency. The maximum continuous evaporation is the maximum continuous production of steam per unit time under the specified outlet pressure and temperature.

Steam parameters include the steam pressure and temperature of the boiler, usually referring to the superheated steam pressure and temperature at the outlet of the superheater and reheater. If there is no superheater and reheater, it refers to the saturated steam pressure and temperature at the outlet of the boiler.

The feed water temperature refers to the inlet water temperature of the economizer. When there is no economizer, it refers to the inlet water temperature of the drum.

If the industrial boiler can operate safely and stably all the time, it would be great for the enterprise. There is no need to worry about property loss and casualties. However, if the quality of the industrial boiler is poor or the furnace operator does not operate properly, it will cause the boiler In the event of an explosion, the loss to the safety of property and personnel is very large, and it will also cause adverse effects on the enterprise.

This shows how important it is to maintain the safe and stable operation of industrial boilers. Zhengzhou Fangkuai Boiler Factory reminds everyone that if you want to avoid an explosion in an industrial boiler, you must first understand the cause of the explosion, so that the risk can be avoided reasonably.

The main reasons for the explosion of industrial boilers are as follows:
       1. The lack of water in the boiler reduces the overheating intensity of the drum or furnace tube, and the drum or furnace tube ruptures, and the steam or water in the furnace is quickly ejected to form an explosion.
       2. The boiler is lacking, the drum or furnace tube is overheated to burn red, and water is suddenly added to form a large amount of steam, which reduces the strength of the drum or furnace tube, and the steam or water in the furnace is quickly ejected to form an explosion.
       3. The scale in the furnace tube is thickened, the strength of the furnace tube overheating is reduced, the furnace tube is ruptured, and the steam or water in the furnace is quickly ejected to form an explosion.
       4. The quality of the boiler is defective, and the strength of the drum or furnace tube is lower than the specified value and ruptured, forming an explosion.

By understanding the causes of industrial boiler explosions, we can know which aspects should be taken to ensure the safe operation of boilers.

When the business personnel of Zhengzhou Fangkuai Boiler Factory show users our success stories or lead users to visit the factory, many users who want to purchase steam boilers will ask: What does "steamed tons" mean? Does it represent the tonnage of the boiler? This involves the professional problem of steam boilers, and our technical expert Xie Gong will answer for everyone.

In the field of thermodynamics, the steam ton itself is a non-standard unit, which represents a unit of the capacity of the heating boiler. The steam ton/hour means that 1 ton of hydration can be evaporated per hour to provide heat for water vapor heating or machine operation.

One steamed ton of medium is equivalent to containing 0.725MW of heat. In East China and North China, the heating area of ​​one steamed ton of medium is about 10,000 square meters.

The tonnage of a boiler has two meanings: one is to measure the rated output or work capacity of the boiler. The steam boiler has an hourly evaporation capacity t/h, and the hot water boiler has an hourly heating capacity, 0.7Mw=1t. Another meaning is to measure the total production capacity of a boiler plant. For example, the annual output of a certain boiler plant is XX tons. It is not measured by the number of boilers, but the rated evaporation or heat supply of all boilers produced. The sum is expressed as the total amount.

Steam boilers are mostly used in industrial sites such as chemicals and building materials. For this type of boiler, users are generally concerned about the boiler's operating efficiency, energy consumption, service life, and so on. How much steam can a steam boiler produce with 1 ton of water? A few tons of steam boiler is enough to meet the needs of users, and users must understand these data when purchasing boilers. Zhengzhou Fangkuai Boiler Factory will give you a free explanation of this knowledge of steam boilers.

If losses such as leakage and blowdown are neglected, the use of 1 ton of water in a steam boiler can produce 1 ton of steam; considering the actual situation, different boilers have water losses, and this ratio is 1-5% of the export steam.

The unit of measurement for boilers is commonly called "XX tons". There is a conversion method between hot water boilers and steam boilers. According to the measurement standard, the conversion is: 1 ton/hour (t/h) ≈ 60×104 kcal ( Kcal)/hour (kcal/h) ≈0.7 megawatt (MW).

For example, a 58MW hot water boiler is equivalent to an 80-ton steam boiler, and the boiler's flow rate is about 970 tons/hour.

Steam boiler is a pressure vessel, routine maintenance work is indispensable, mainly include:
       (1) Check the function of the water level regulator: whether it can automatically fill the water and stop the pump.
       (2) Inspection of flame monitoring.
       (3) Lubricate the rotating, sliding and cam parts and wipe them.
       (4) Flush the water level gauge 1-2 times (per shift), and operate according to the correct method until the water level gauge is rinsed.
       (5) Discharge 1-2 times (per shift).

The role of industrial boilers is reflected in all aspects, such as disinfection and sterilization in hospitals, chemical production, and so on. Various industries have demands for the use of industrial boilers. Zhengzhou Fangkuai Boiler Factory reminds everyone that if you want to ensure the stable operation of industrial boilers, routine maintenance work cannot be ignored.

Weekly maintenance work for industrial boilers:
       1) To stop the furnace at ultra-low water level, perform a furnace shutdown test (press the button on the B3 board, it should be able to simulate a water shortage and stop the furnace), or blow the sewage to check the function of the furnace at ultra-low water level.
       2) The safety valve is manually opened once and reset quickly.
       3) The burner control system and the electric eye should be checked. The photocell of the electric eye should be pulled out by hand, and the furnace should be shut down within 1s; and the electric eye should be wiped.
       4) Fill or replace the valve packing; eliminate dripping.
       5) Tighten bolts everywhere, especially the gas pipeline system, and check for leaks if necessary.

Maintenance work to be done on industrial boilers every month:
       Clean the filter on the gas line once a month.

Maintenance work to be done on industrial boilers every six months:
       1) Check the pressure gauge and clean the gauge tube, add distilled water when resetting.
       2) Maintain the water level electrode and polish it with fine sandpaper after pulling it out.
       3) Clean up the flue, generally according to the exhaust temperature to decide whether to clean up. Under normal circumstances, the exhaust gas temperature does not exceed 350°C (measured at the exit of the boiler and the entrance of the flue). Too high means that the fouling increases and the efficiency of the boiler decreases, and it must be cleaned. The purpose of cleaning the flue is on the one hand for economic considerations, on the other hand it is also for safety considerations (the smoke fouling is poor in heat conduction and prone to local burning). When cleaning and replacing asbestos gaskets, use the method of lap joints (to prevent fumes from running out), and apply graphite instead of lubricating oil.
       4) After boiler repair or annual inspection, check that the manhole, head hole, and hand hole nut are not loose, and check the rotation of the motor (from the fan end, it rotates counterclockwise).

Maintenance work to be done on the boiler each year:
       Check the safety valve once a year. Perform a comprehensive overhaul and maintenance of the boiler.

When many users are purchasing steam boilers, if they visit the boiler factory, they will find that the nameplate of many steam boilers is marked with the "t/h" logo, and there is often a number before the "t/h". Take "2t/h" for example, what does this mean? Let the after-sales engineer Zhao Gong of Zhengzhou Fangkuai Boiler Factory come to answer for you.

In a steam boiler, "t/h" is an identifier indicating the capacity of the boiler, where: t represents the unit of weight-ton; h represents the unit of time-hour.

"Boiler 2t/h" refers to the rated evaporation capacity of the steam boiler (t/h-ton/hour), that is, 2 tons of steam can be produced per hour.

The 10t/h steam boiler can evaporate 10 tons of water per hour into a steam boiler that meets the requirements.

Note: Compliance refers to the rated steam parameters specified on the chrome plate of the boiler when the boiler is designed. Generally, there are steam pressure, steam temperature, and boiler feed water temperature in addition to the boiler capacity.

When the business staff of Zhengzhou Fangkuai Boiler Factory show users our successful cases or lead users to visit the factory, many users who want to purchase steam boilers will ask: What does "steamed tons" mean? Does it represent the tonnage of the boiler? This involves the professional problem of steam boilers, and our technical expert Xie Gong will answer for everyone.

In the field of thermodynamics, the steam ton itself is a non-standard unit, which represents a unit of the capacity of the heating boiler. The steam ton/hour means that 1 ton of hydration can be evaporated per hour to provide heat for water vapor for heating or for machine operation.

One steamed ton of medium is equivalent to containing 0.725MW of heat. In East China and North China, the heating area of ​​one steamed ton of medium is about 10,000 square meters.

The tonnage of a boiler has two meanings: one is to measure the rated output or work capacity of the boiler. The steam boiler has an hourly evaporation capacity t/h, and the hot water boiler has an hourly heating capacity, 0.7Mw=1t. Another meaning is to measure the total production capacity of the boiler plant. For example, the annual output of a certain boiler plant is XX tons. It is not measured by the number of boilers, but is the sum of the rated evaporation or heat supply of all boilers produced. The sum is expressed as the total amount.

The 8-ton gas hot water boiler contributes a lot to the heat output of heating during the heating season. Many users who use gas hot water boilers are more concerned about whether the boiler will fail during operation. After all, During the heating season, the boiler is basically needed every day. If the boiler stops running due to a malfunction, the loss will be very serious.

Song Gong, the boiler technical engineer of Zhengzhou Fangkuai Boiler Factory, reminded everyone that the following issues should be paid attention to during the heating operation of the 8-ton gas-fired hot water boiler.

The 8-ton gas-fired hot water boiler is prone to steam and moisture layer in the following situations. The vapor-water layer is easy to occur in the horizontal or small inclination tube and the flow rate of the steam-water mixture in the tube is too low. This is due to the different density of steam and water. If the flow rate of the soda-water mixture is too low, the Taodong mixing effect is less than the separation effect, and a steam-water layer is produced. Therefore, the water wall of the 8-ton gas-fired hot water boiler using natural circulation mode should avoid horizontal and small inclination arrangements.

The use of large direct downcomers for the 8-ton gas-fired hot water boiler can reduce the flow resistance and facilitate water circulation. In addition, it simplifies the layout, saves steel, and reduces the number of openings in the steam drum.

The 10-ton gas-fired steam boiler belongs to the category of medium-sized industrial boilers. The boiler can output 10 tons of high-temperature steam per hour, which can meet the steam requirements of chemical plants, food processing plants, pharmaceutical plants and other industries. For boiler users, the market price of gas-fired steam boilers is a concern for them. Through the comparison of market prices, we can understand the market sales of this type of boiler, and it is also convenient to compare the differences between different boiler plants.

Zhao Gong, the boiler pre-sales consultant of Zhengzhou Fangkuai Boiler Company, learned about the latest situation of the market price of 10 tons of gas-fired steam boilers, and explained to all users, and it is also convenient for users to grasp the situation.

The pressure of a 10-ton gas-fired steam boiler is generally between 1.25-1.6MPa, which is a medium-pressure boiler. The market price of the boiler is affected by the model, operating efficiency, energy saving, and pollutant emission.

The more common model of 10-ton gas-fired steam boiler is the WNS horizontal boiler. This design of the boiler is more conducive to the user's control of the boiler; and under the same tonnage, the horizontal structure of the boiler is smaller and saves the boiler room. Operating efficiency is an important parameter to measure whether the boiler is energy-saving. The higher the operating efficiency, the more energy-saving the gas-fired steam boiler. The operating efficiency of gas-fired steam boilers on the market is generally around 80%, while the boilers launched by Zhengzhou Fangkuai Boiler Factory incorporate many advanced technologies such as condensation recovery, and the operating efficiency can reach more than 95%, which is more than 15% higher than conventional boilers. The energy saving effect can be said to be very obvious.

Moreover, the boiler adopts full premix, FGR and other combustion technologies and is equipped with ultra-low nitrogen burners, and the pollutant emissions after operation can be completely lower than 30 mg/m3, meeting China's strict atmospheric environmental protection standards. It can be used normally in any area.

In general, the market price of a 10-ton gas-fired steam boiler fluctuates in the range of hundreds of thousands to several million, and the specific price still depends on a specific type of boiler equipment.

For users who use industrial steam boilers, they must pay attention to the failure of the downcomer with steam. Once the boiler's downcomer contains steam, it will easily cause the boiler to malfunction, causing serious consequences, and endangering personal health and economic property.

For industrial steam boilers, what is the hazard of carrying steam in the downcomer? Let Song Gong, the boiler technical engineer of Zhengzhou Fangkuai Boiler Factory, tell everyone the answer.

When the water in the downcomer contains steam, the average density of the working fluid in the downcomer will decrease, and the cyclic motion head will decrease. At the same time, the average volume flow of the working fluid will increase, and the flow velocity will increase, resulting in an increase in flow resistance, resulting in overcoming the resistance of the rising pipe. The reduction of the capacity and the reduction of the circulating water speed increase the possibility of failures such as circulation stagnation and reverse flow.

However, Song Gong also reminded everyone here that industrial steam boilers also have measures to prevent steam in the downcomer.

For industrial steam boilers, some measures are mainly taken in the structural design for the reasons for the steam, such as: installing a cross baffle or grille at the entrance of the large-diameter downcomer; increasing the low enthalpy of the feed water and introducing the low enthalpy feed water to Inside (or near) the inlet of the downcomer. To prevent the downcomer from heating, specify the distance between the steam-water mixture and the inlet of the downcomer, and the downcomer is led out from the bottom of the steam drum. During operation, attention should be paid to maintaining the water level of the steam drum to prevent the downcomer from carrying steam when it is too low.

After all, industrial steam boilers are still pressure vessels. In the process of using the boilers, users must first put safety issues first, and guide the boiler workers to regularly inspect the operation of the boiler, and solve the problems in time to avoid major disasters.

If an enterprise wants to purchase a highly cost-effective industrial boiler, it must first have an understanding of the manufacturers that produce industrial boilers on the market. As the saying goes, knowing oneself and the other can survive all battles.

Zhengzhou Fangkuai Boiler Factory will introduce some manufacturers of industrial boilers currently on the market, and also help you to better sort out the boiler brands.

The manufacturers of industrial boilers import: Palmer Leishi from Germany, Wilma and Dukakis from the United States. The joint ventures include: Fangkuai Boiler, Star Boiler, Qingdong Boiler, Fulton, and domestically produced: Anxin Boiler, Boruite Boiler, Tai'an Mountain Boiler, and Big Buffalo Boiler.

Which brand of industrial boiler is good? Generally speaking, which brand is good or bad, firstly depends on what price you need, what fuel you use, what is the purpose and purpose of buying the boiler, whether it is used for industrial production, community, school central heating, or individual need. Also choose import or domestic import. At present, there are many boiler brands, and the domestic initial investment is small, but the service life is not long. The initial investment of import is slightly larger, but the use process is more energy-efficient and the service life is relatively long.

Generally speaking, when choosing industrial boilers, in addition to purchasing boilers, you also need to screen boiler manufacturers. Cooperating with a company with strong comprehensive strength and guaranteed after-sales service can save a lot of trouble in the later stage.