Working principle of hot air stove

Working principle of hot air stove
The function of a hot blast furnace is to heat the blast furnace air to the required temperature, thereby improving the efficiency and efficiency of the blast furnace. Its working principle is "heat storage". Gas burns in the combustion chamber, and high-temperature exhaust gas passes through grid bricks to store heat. When the grid bricks are fully heated, the hot air stove can be replaced to supply air. At this point, the relevant combustion valve is closed, the air supply valve is opened, and the cold air is heated and sent out through the grid bricks. When installing three to four hot blast furnaces, heat two or three, one for gas supply, and heat when the two are replaced alternately.
Direct high purity hot air furnace
It is the direct combustion of fuel, forming hot air through high purification treatment, and directly contacting the material for heating, drying, or baking. This fuel consumption method
Fuel can be divided into:
1. Solid fuels, such as coal and coke.
2. Liquid fuels, such as diesel, heavy oil, and alcohol based fuels
3. Gas fuels, such as gas, natural gas, liquefied gas, etc.
The high-temperature combustion gas obtained after the fuel combustion reaction further comes into contact with external air. After mixing to a certain temperature, directly enter the drying or baking room. It comes into contact with dry materials, heats and evaporates water to obtain dry products. In order to utilize the combustion reaction heat of these fuels, a fuel combustion device must be added. For example, coal-fired burners, oil burners, gas burners, etc.
This type of direct heating hot blast furnace cannot be used for agriculture and other heating purposes.
Indirect hot air stove:
Mainly used for drying materials that are not allowed to be contaminated, or for drying low-temperature thermosensitive materials. For example: milk powder, pharmaceuticals, synthetic resins, fine chemicals, etc. This heating device uses steam, heat transfer oil, and flue gas as carriers to heat air through various forms of heat exchangers.
The most fundamental problem of indirect hot blast furnaces is heat exchange. The larger the heat exchange area, the higher the heat conversion rate, the better the energy-saving effect of the blast furnace, and the longer the service life of the furnace and heat exchanger. On the contrary, the size of the heat exchange area can also be identified from the flue gas temperature. The lower the smoke temperature, the higher the heat conversion rate, and the larger the heat transfer area.
After separating the fuel and heating source, it can be used for human body heating.
Working principle of chain row hot air stove
Chain row energy-saving hot air stove is a new type of high-efficiency and energy-saving hot air stove. The furnace is equipped with energy-saving front and rear arches, and a cyclone combustion chamber is installed behind the furnace to ensure full combustion of fuel and low heat loss. The principle is that coal is fed into the furnace through a grate, and air is provided by a fan. Through the coal seam, the coal on the chain is fully burned and generates high-temperature smoke. The high-temperature flame enters the secondary combustion chamber, and the cyclone combustion chamber burns again, causing the blackness of the hot blast furnace flue gas to be lower than "Lingman 1". The chain row energy-saving hot air furnace has stable heating, high automation, high efficiency, environmental protection, and safety and reliability.
Outstanding product advantages
Advantage 1: Reduce costs and use bituminous coal as fuel, with a lower smoke black background than "Lingman 1"
The chain type energy-saving hot air stove adopts a 5000 CAL bituminous coal stove design. The old earth furnace requires high coal quality and must use 7000 CAL of white coal blocks as fuel. The furnace is equipped with energy-saving front and rear arches, and a cyclone combustion chamber is installed behind the furnace to ensure full combustion of fuel during operation, with very low heat loss, greatly improving the combustion speed of fuel. Especially the setting of the cyclone combustion chamber ensures complete combustion of the flue gas with low heat loss, resulting in a blackness of the hot blast furnace flue gas lower than "Lingman 1", ensuring that the color of the compound fertilizer production is not affected.
The chain row energy-saving hot air stove has a small installed capacity, a power consumption of within 50KW-150KW, and low operating costs.
Advantage 2: Stable heating and increased compound fertilizer production
The chain type energy-saving hot air furnace is equipped with automatic coal loading and grate conveying, providing very uniform coal supply. When adjusting the temperature, only dampers can change the temperature. Therefore, the uniform and stable heat provided in the furnace plays an important role in the stability of compound fertilizer production. Temperature instability is one of the main factors affecting the yield of compound fertilizers. Compound fertilizers have high yield and good quality, playing a decisive role in chain row energy-saving hot air furnaces.
The main reason for the unstable temperature of the old soil furnace affecting the production of composite fertilizers is that the temperature is artificially affected by coal. When the temperature acts on the slag, the heat exchange area inside the furnace is small. In addition, the old soil requires the furnace workers to stay in front of the furnace everywhere and handle the coal slag in a timely manner, which will be affected by any carelessness. If the temperature is high or low, it needs to be changed to restore normal for several hours. Chain row energy-saving hot air stove solves all the above problems for you, bringing you high quality, high output, and labor-saving and worry free.
Advantage 3: Solve the problems of moisture content and caking in composite fertilizers
The production test of the hot air furnace in a compound fertilizer factory has proven that the heating area is large, the hot air volume is sufficient, and the temperature difference between the head and tail is greatly reduced, making it easy to control the water in the compound fertilizer body within the specified range. Through experiments, it has been proven that the Europa hot air stove can control the moisture content of the product, solve the problem of compound fertilizer caking, reduce the amount of anti caking agent, and reduce production costs.
Advantage 4: High degree of automation, reducing labor intensity for workers
Three automatic chain row energy-saving hot air furnace: automatic coal loading, automatic slag discharge, and automatic metering, greatly reducing the labor intensity of workers. There is no need to shovel coal, shovel slag, and workers do not need to be in close contact with high temperatures. The old-fashioned earthen stove caused great damage to the workers' eyes. The chain row energy-saving hot air stove is easy to operate and convenient for furnace workers, solving the problem of unmanned burning. At the same time, the automatic measurement of chain row energy-saving hot air furnaces solves the problem of non measurement and continuous evaluation.
Advantage 5: high-end auxiliary accessories
The chain row energy-saving hot air furnace requires strict and continuous improvement in the production process, with standardized procurement and strict control of steel plates, grate, refractory materials, and auxiliary accessories. For example, the fire grate reducer uses a BTTE 1:6000 reducer, which is three times more expensive than a regular reducer.
Advantage 6: Environmental protection, pollution-free, safe and reliable
The chain exhaust energy-saving hot blast furnace has been repeatedly tested and proven to be fully burned, without black smoke, with a blackness lower than "Furnace No.1". The combustible gas during the combustion process will be completely burned, and the SO2 emission concentration is less than 900mg/m3, which meets national standards.
In addition, the chain row energy-saving hot air stove is a non pressure vessel, without any safety hazards, easy to operate, safe and reliable.