Hot air furnace as thermal power machinery, in the late 1970s in China began to be widely used, it has become an electric heat source and traditional steam power heat source in many industries to replace the product. Hot air furnace varieties, series of full, to the fuel type is divided into coal, oil, gas furnace, etc.. The corresponding supporting hot air furnace burner almost developed at the same time with the hot air furnace.
The basic principle of the hot air furnace is to heat the wind to the required temperature, high heat transfer temperature, high heat utilization rate. In order to further understand the hot air furnace, we divide it into direct hot air furnace and indirect hot air furnace.
Direct type hot air oven
The high temperature combustion gas obtained after the combustion reaction of fuel is further contacted with the outside air, mixed to a certain temperature and then directly entered into the drying room or baking room, in contact with the dried material, heated and evaporated moisture, so as to obtain the dried product. In order to use the combustion reaction heat of these fuels, it is necessary to set up an additional set of fuel combustion devices. Such as: gas burner, oil burner, gas burner, etc.
Indirect hot air furnace
It is mainly applied to the dried materials that are not allowed to be contaminated, or applied to the drying of heat-sensitive materials with lower temperature. Such as: milk powder, pharmaceuticals, synthetic resin, fine chemicals, etc. This kind of heating device, that is, steam, heat-conducting oil, flue gas, etc. as a carrier, through a variety of forms of heat exchangers to heat the air.
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The main fuel of gas burner is natural gas, liquefied petroleum gas, city gas and other combustible gases, these fuels are flammable and explosive dangerous gases, in the use and storage process should pay great attention to safety, otherwise major safety accidents will occur. ...
