The use of industrial boilers can be said to be very extensive. It can be used in industrial manufacturing such as chemical industry, papermaking, building materials, etc., and can also be used in hospitals, food processing plants and other places to achieve disinfection and sterilization. So, for these enterprises, it is very important to choose to cooperate with an industrial boiler manufacturer with strong comprehensive strength and provide them with an industrial boiler that is energy-saving, low-emission, safe and has a long service life.

How to screen out industrial boiler manufacturers with strong comprehensive strength that can meet user needs? Let Song Gong, the boiler technology expert of Zhengzhou Fangkuai Boiler Factory, tell you the answer.

To judge the overall strength of an industrial boiler plant, first let the qualifications speak for themselves. The manufacturing grades of industrial boilers are divided into four grades: A, B, C, and D. Grade A is the highest and Grade D is the lowest. Generally speaking, the higher the level, the better the boiler production qualifications. Both the product selection and the process methods used are very advanced. This also plays a role in ensuring the quality of the boiler for users.

Secondly, it depends on the overall scale of the boiler plant. After all, industrial boilers belong to the heavy industry manufacturing industry. In the process of construction period production and subsequent test experiments, there needs to be enough space and site to complete. If the total production area of ​​a boiler company is very small, once the user orders increase, the production machinery cannot even be turned on, which will eventually delay the user's construction period.

Another thing to look at is the after-sales service level of industrial boiler manufacturers. Many companies that have used boilers for many years understand that boilers are consumables and must be solved by professionals in the event of a failure. Many companies do not know the internal structure of the boiler and need to be completed by professional technicians from the boiler manufacturer. Then, the after-sales service level of the manufacturer is very important. Whether it can provide boiler spare parts, whether it can quickly assign after-sales engineers to help customers deal with problems, these are the main points of investigating the comprehensive strength of a boiler factory.

The installation of economizers and condensers for industrial boilers can effectively improve the operating efficiency of the boilers and reduce the temperature of flue gas emissions, thus saving energy and reducing emissions. Today, Zhengzhou Fangkuai Boiler Company will focus on the energy-saving accessories for you.

In the economizer equipment, if the user uses it improperly, over time, it will cause the economizer to wear out, which is very unfriendly to the boiler. To avoid this problem, we must first understand the causes of the wear and tear of the economizer, and then prescribe the right medicine and solve it in a targeted manner.

When the flue gas enters the vertical flue where the economizer is arranged from the horizontal flue, due to the centrifugal force generated by the flue gas's turning flow, most of the ash particles are thrown to the rear wall of the tail flue, causing the fly ash concentration in this part to be greatly increased. Increase, causing the boiler

The economizer pipe section near the wall is severely worn.

When there is a large gap between the tube and the wall of the economizer close to the wall or there is a flue gas corridor between the tube rows, the flow resistance of the flue gas in the flue gas corridor is much smaller than the resistance at other places. The flow rate is high. Therefore, the pipe or elbow next to the flue gas corridor is prone to severe wear. Practice has proved that the flue gas flow rate in the tube bundle is 4～5m/s, while the flow velocity in the flue gas corridor will be as high as 12-15m/s, which is 3～4 times that of the former, and its wear rate will be dozens of times higher. Because the degree of pipe wear is approximately proportional to the cube of the smoke velocity.

Knowing the reasons for the wear of the economizer, we can propose specific methods to prevent wear.
       (1) Protective tile: Cover the heated surface that may be severely worn with a cover, and only need to replace the worn protective tile during maintenance.
       (2) Protective curtain: Use curtains to protect the entire row of straight pipes or whole elbows in the flue gas corridor and near the wall.
       (3) Partial use of thick-walled pipes: when the pipes are densely arranged and it is difficult to install or replace the protective tiles, a section of thick-walled pipes should be appropriately used in places that may be severely worn to extend the service life.
       (4) The heating surface is turned over: due to uneven wear, in order to make the heating surface of each part basically reach the same service life, the economizer adopts the method of turning over, that is, the economizer is removed and turned over during the overhaul. , And then put it in (replace the unqualified pipe), so that the side that has been worn thinner is on the back of the flue gas, and the side that has not been washed by the flue gas is adjusted to face the flue gas flow, which reduces the cost , It also improves the service life of the energy saver.

In the boiler equipment, the air preheater is also referred to as the heat pipe air preheater, generally referred to as the air preheater. The air preheater can improve the heat exchange performance of the boiler and reduce the heat loss.

The Euromonitor series gas-fired steam boiler launched by Fangkuai Boiler Factory has added the air preheater as an important accessory. After relevant tests, data proves that with this accessory, the boiler can save energy by at least 10%. So, how does the air preheater achieve this 10% energy saving rate? Let the after-sales engineer Xie Gong of Zhengzhou Fangkuai Boiler Factory tell you the answer.

The air preheater uses the heat of the boiler tail flue gas to heat the air required for fuel combustion to improve the efficiency of the boiler. The air preheater is the flue gas in the boiler tail flue through the internal heat sink to preheat the air before entering the boiler The heated surface to a certain temperature. Used to improve the heat exchange performance of the boiler and reduce energy consumption. Generally referred to as an air pre-controller. According to the difference in structure, the air preheater can be divided into two types: tube box type and rotary type. The rotary type is divided into two types: wind hood rotary type and heating surface rotary type. At present, power plant boilers often use heating surface rotary preheaters. The application in boilers is generally two-cell, three-cell, and four-cell types, among which four-cell bins are more commonly used in circulating fluidized bed boilers.

The function of the air preheater is mainly to transfer the heat carried in the flue gas discharged from the flue at the tail of the boiler to the air before entering the boiler through the heat sink, and to preheat the air to a certain temperature. The heat pipe air preheater uses the heat energy of the flue gas at the outlet of the boiler to transfer heat through the superconducting heat pipe to preheat the combustion air of the boiler or other drying purposes.

Of course, we also want to remind everyone to pay attention to the corrosion and ash accumulation of the air preheater, which is harmful to the boiler.

Because the air preheater is located in the lowest flue temperature area in the boiler, especially the cold end of the final air preheater, the air temperature is the lowest, the flue gas temperature is also the lowest, and the heating surface wall temperature is the lowest, so it is most prone to corrosion and dust accumulation.

In an industrial boiler system, the normal operation of the system cannot be maintained as long as there is a boiler. A series of auxiliary equipment such as burners, water tanks, economizers, condensers, water pumps, instrument valves, etc. are also needed to make the whole The system keeps running. Among them, the burner is the most important auxiliary equipment. Zhengzhou Fangkuai boiler manufacturer recommends that everyone should pay equal attention to the choice of burners when purchasing industrial boilers.

In industrial boiler equipment, the burner is a device that continuously sends fuel and air into the furnace, rationally organizes the fuel flow, and makes a good mixture of fire and combustion quickly and stably.

According to the shape of the burner, the burner can be divided into two types: round and slot (groove). According to the air flow conditions of the burner, it is divided into two types: direct flow and swirl flow. DC burners are generally arranged in four corners, while swirl burners are often arranged in the front wall, front and rear walls, and on both sides.

The four-corner direct current burner is a relatively common burner type. The structure of this burner varies according to the type of fuel and the delivery method. Part of the nozzles can swing up and down and all adopt tangential combustion.

Everyone should pay attention to the fact that when choosing a four-corner direct-flow burner, if the airflow is found to be biased, it must be handled carefully, otherwise it will have a great impact on the fuel combustion.

The main reasons for the flow bias of the DC burner are as follows:
       (1) The pressure on both sides of the jet is different. Under the action of the pressure difference, it is pressed to one side to produce a deflection. Because the four-corner jet of the direct current burner is tangent to the imaginary circle in the center of the furnace or the cross section of the furnace is not square, the angle between the two sides of the jet and the furnace wall is different. The side with a large included angle has a large space, and the high-temperature flue gas from the furnace is sufficient to supply air to the space; while the side with a small included angle is insufficient, the static pressure on the side with the large included angle is higher than the side with the small included angle. Under the action of the pressure difference, the jet deflects to the side with the smaller included angle. The greater the difference between the width and depth of the furnace, the larger the diameter of the tangent circle. The greater the difference in the angle between the two sides, the greater the pressure difference and the greater the jet deflection.
       (2) The jet is forced by the lateral thrust of the jet from the adjacent corner burner upstream of the burner to force the airflow to deflect.
       (3) The rigidity of the jet itself also affects the deflection of the airflow. The higher the jet velocity, the greater the momentum, the larger the nozzle cross-sectional area, and the smaller the nozzle aspect ratio, the stronger the rigidity and the smaller the jet deflection. Conversely, the worse the rigidity, the greater the deflection of the airflow.

Most industrial boilers are special equipment. From design, manufacturing, commissioning, and operation, they must comply with strict quality and safety regulations. This is to enable the boiler to have a higher safety factor; including the selection of the furnace worker, you must choose Those with rich experience and relevant qualification certificates are good. Today, Song Gong from Zhengzhou Fangkuai Boiler Factory came to talk to you about the use of safety valves, an important safety protection equipment in industrial boiler equipment.

The safety valve is a safety device installed to prevent explosion caused by excessive pressure in abnormal conditions in industrial boiler equipment and containers. When the pressure in the boiler is too high, the safety valve will automatically open, and then automatically close when the pressure drops to a safe range to prevent the equipment from exploding due to excessive pressure. Generally, the constant pressure of the safety valve is 1.05 to 1.10 times of the operating pressure.

According to the different structure and principle of action, safety valves can be divided into gravity type, lever type, spring type and other types. The lever type is more suitable when the working temperature is high and the pressure is not too high; the spring type should be used for high-pressure equipment; generally, the spring type safety valve is commonly used.

The operating principle of the spring-type safety valve is that when the boiler is operating normally, the downward force of the spring is greater than the upward force of the fluid on the valve core, and the safety valve is closed. Once the fluid pressure exceeds the allowable pressure, the upward force of the fluid acting on the valve core increases, the valve core is pushed open, and the fluid overflows. After the fluid pressure drops below the spring force, the spring presses the valve core to force it to close.

Regardless of the type of boiler equipment, it needs to release heat energy after combustion to promote the normal operation of the boiler, and this is no exception for oil and gas boilers.

In oil-fired and gas-fired boiler equipment, whether the fuel is completely combusted is critical to the operating efficiency of the boiler. If the fuel burns more fully, the calorific value released is higher, which will also improve the overall operating efficiency of the boiler after it is passed to the boiler. So, how to ensure that the fuel of the oil-fired gas boiler can be completely burned? Let the technical engineer of Zhengzhou Fangkuai Boiler Factory tell you the answer.

First of all, we need to understand what it means to completely burn fuel.

After the combustible components in the fuel are burned, all combustion products that can no longer be oxidized, such as CO2, SO2, H2O, etc., are called complete combustion.

If there is complete combustion, there will be incomplete combustion. If the fuel is incompletely burned, it will inevitably cause the boiler operating efficiency to decrease.

Incomplete combustion means that part of the combustible components in the fuel does not participate in the combustion during the combustion process, or although combusted, there are still combustible gases CO, H2, CH4, etc. in the generated flue gas, which is called incomplete combustion.

After everyone fully understands the meaning of full combustion and incomplete combustion of fuel in oil and gas boilers, it is possible to prescribe the right medicine to solve the problem of incomplete fuel combustion.

Oil-fired hot water boilers are a common type of boiler equipment in the heating season. The boilers have high operating efficiency and relatively low pollutant emissions. Moreover, oil fuels are easily available in any region of China, and there is no difficulty in using fuel. The problem. So, what problems should be paid attention to when using oil-fired hot water boiler for heating in winter? Let Zhao Gong, a boiler technology expert from Zhengzhou Fangkui Boiler Factory, tell you the answer.

Oil-fired hot water boilers should be noted when heating in winter: the boiler room should take into account the possibility of development and expansion, and the location of its auxiliary room should not hinder the development of the boiler room. If the boiler room is in the plant area and living area, it is generally closed, but it can be arranged in the open air in the dust removal and air induction parts.

Adjustment aspects and adjustment of work size or switching pressure control debugging in oil-fired boilers: under normal circumstances, it is 0.9MPa to small fire, 0.8MPa to big fire. Automatic furnace shutdown and start-up: when the working pressure is 0.8-1MPa, it is adjusted to 1.02MPa to stop the furnace and 0.82NPa to start the furnace.

In less than 3 months, it is the heating season in my country. The gas-fired hot water boiler can be said to be the necessary heating and heating equipment for the heating season. Many users of heating companies are also rushing to purchase boilers. For users, the purchase price of gas hot water boilers is more concerned. The corresponding prices of gas hot water boilers of different tonnages are also different. Just listen to Zhengzhou Fangkui Boiler Factory for you.

The price of gas-fired hot water boilers, judging from the current boiler market, the price of the boiler body ranges from tens of thousands to hundreds of thousands, millions, which does not include the cost of product installation and commissioning and the cost of auxiliary equipment such as boiler burners. If these two aspects are added, there may be more. But in general, the larger the tonnage of the boiler, the higher the price; the better the performance of energy saving and environmental protection, the higher the price.

For such boilers as gas-fired hot water boilers to operate properly, some auxiliary equipment is necessary. These auxiliary equipment mainly include burners, various valves and instruments, feed water pumps, sub-cylinders, boiler water samplers, oil tanks, water tanks, oil injection pumps and filters, etc.

The 2100KW gas-fired hot water boiler, specifically speaking, means that the boiler's rated thermal power is 2100MW, or 2.1MW, which is about 3 tons when converted to boiler tonnage.

Steam boiler is a type of boiler that outputs a large amount of steam. It supports the use of coal, biomass, oil, gas, electricity and other fuels. Depending on the fuel, the boiler is also divided into multiple models. In recent years, environmental protection problems have gradually been exposed, and various provinces and cities are also actively managing the atmospheric environment.

From the professional point of view, boilers such as gas-fired steam boilers are an environmentally friendly boiler compared to biomass and coal-fired boilers, because they use gas, and only a small amount of nitrogen oxides and water are produced after combustion. The environmental protection factor is very high. Moreover, the thermal efficiency of this type of boiler is very high, reaching more than 90%. The gas-fired steam boiler introduced by Zhengzhou Fangkui Boiler Factory incorporates international advanced condensing technology, and the thermal efficiency can reach more than 95%, which can save users a fuel cost.

Power steam boiler and gas steam boiler, if the structure of these two boilers are compared, the power steam boiler is simpler, and the boiler price is lower. Since there are gas supply, flue gas and storage systems in the gas steam boiler, its structure is more complicated and the price will be higher. However, considering the situation of electric steam boilers, generally only about 4 tons, you can choose to use multiple electric steam boilers together, or choose a large-tonnage gas steam boiler, this still depends on the actual situation of the company itself decided.

Oil-fired hot water boilers are a common type of boiler equipment in the heating season. The boilers have high operating efficiency and relatively low pollutant emissions. Moreover, oil fuels are easily available in any region of China, and there is no difficulty in using fuel. The problem. So, what problems should be paid attention to when using oil-fired hot water boiler for heating in winter? Let Zhao Gong, a boiler technology expert from Zhengzhou Fangkui Boiler Factory, tell you the answer.

Oil-fired hot water boilers should be noted when heating in winter: the boiler room should take into account the possibility of development and expansion, and the location of its auxiliary room should not hinder the development of the boiler room. If the boiler room is in the plant area and living area, it is generally closed, but it can be arranged in the open air in the dust removal and air induction parts.

Adjustment aspects and adjustment of work size or switching pressure control debugging in oil-fired boilers: under normal circumstances, it is 0.9MPa to small fire, 0.8MPa to big fire. Automatic furnace shutdown and start-up: when the working pressure is 0.8-1MPa, it is adjusted to 1.02MPa to stop the furnace and 0.82NPa to start the furnace.

Overpressure alarm: it is generally 0.05MPa higher than the normal automatic furnace shutdown pressure setting.

High water level alarm: generally set to enter the water level warning state when the distance from the upper part of the water meter is less than 25mm.

Limit low water level shutdown: different boiler manufacturers, their settings will be different, however, the general principle is that the water tube boiler can not be lower than each drop nozzle.

Automatic pump start and stop control: generally set about 25mm above and below the center of the water level gauge.

Fuel pressure setting: heavy oil is 1.8-2.2MPa, light oil is 1.6-1.8MPa.

Fuel temperature setting: if it is light oil, no heating is required, if it is heavy oil, heating control is required. In addition, the daily fuel tank temperature is 60 to 80 degrees, and the burner temperature is controlled within the range of 95 ℃-110 ℃.

Smoke exhaust temperature: The smoke exhaust temperature of the oil-fired boiler is 220℃-240℃, and the super smoke alarm temperature is set at about 280℃.

For industrial boilers, the level of operating efficiency will directly determine the overall cost of operating boiler equipment. The higher the operating efficiency, the lower the operating cost of the boiler, and the higher the operating cost. Most industrial boilers have large tonnages. The larger the tonnage, the greater the difference in operating costs. Therefore, when using industrial boilers, not only do you have to choose good quality boilers, but also pay attention to methods in subsequent operations to improve boiler efficiency.

Zhengzhou Fangkuai Boiler Factory tells you: if you want to improve the efficiency of industrial boilers, you can achieve them in two ways. One is to adjust the operation mode of the boiler to minimize various losses; but to appropriately increase the steam parameters of the boiler, and Appropriately reduce the amount of boiler cooling water and blowdown.

Before the operation of the industrial boiler, the oven operation is also required. This step is to allow the boiler to heat up slowly, so as to avoid excessive temperature difference stress caused by the rapid heating of the bottom of the furnace, and further damage the furnace or cause the furnace to burst. This is also a protection for the boiler.

Industrial boilers are widely used, and can be used normally in these industries such as manufacturing, mining, construction and power heating industries. The factories that can be used include textile mills, garment factories, garment factories, printing and dyeing factories, and beverage factories. , Soy Products Factory, Meat Products Factory, Canned Food Factory, Winery, Pharmaceutical Factory, Packaging Factory, Building Material Factory, Paint Factory, etc. In addition, this kind of boiler can also be used in hospitals, schools, large supermarkets, hotels, restaurants, swimming pools and other places.

From the professional point of view, the boiler ignition of industrial boilers is for heating, combustion and transition to normal combustion. The heating is to heat the material layer to a certain temperature for burning and other work. For all of us, we should know these three stages of boiler ignition, so that the boiler ignition can be carried out smoothly.

The heating season is approaching, and major heating companies are also making adequate preparations for the heating season. Among them, it is essential to be able to deliver warm heating equipment for thousands of households. Common heating equipment on the market includes hot water boilers and hot blast stoves. Are there any differences between these two types of boilers, which one is more suitable for heating and heating? Let Song Gong of Zhengzhou Fangkui Boiler Factory answer it for you.

The hot water boiler is a kind of boiler equipment, which achieves the effect and purpose of heating by heating hot water and circulating and dissipating hot water. Moreover, there are more tonnages and models of boilers, and there are more types for users to choose. It can be used for heating buildings or factories. The hot air stove is heated by air to achieve the purpose of heating. Generally, the tonnage of the hot air stove is relatively small. If it is used for heating, most of it is also home heating, which cannot support large-scale centralized heating and heating. It is often used for drying. aspect.

A 6-ton hot water boiler is a common heating and heating boiler, and its heat output is generally 1.8 million Kcal/H.

If the water is to be heated from 15°C to 100°C, then from the formula of 1.800000÷85=21176.4706L, it can be concluded that the boiler's water output per hour is about 21 tons.

The water tank used for hot water boilers is generally used to make up water for the boiler pipe network and to store demineralized or deoxidized water. And in the volume of the water tank, it should be determined by the amount of water supply and the requirements. In terms of specific types of water tanks, there are two types of softened water tanks and deaerated water tanks.