Combustor with coal gas and air premixed grills to achieve spray, backflow, preheating and combustion
An air premixing grille and burner technology, applied in blast furnace parts, furnaces, heating furnaces, etc., can solve the problems of large, incomplete, and uneven combustion chamber space, and reduce environmental pollution, reduce emissions, The effect of improving stability
Active Publication Date: 2015-05-20
陈维汉
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Problems solved by technology
[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a gas and air grid premixed injection backflow preheating combustion burner, which can effectively solve the problem of low and uneven mixing rate of gas and air, low combustion intensity and uneven combustion. Problems of completeness, large combustion chamber space and unreasonable structure of the burner
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[0009] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0010] Such as figure 1 , figure 2 and image 3 As shown, the structure of the present invention includes a combustion chamber wall 1, a combustion chamber 2, an air intake pipe 3, a gas intake pipe 4, an air distribution channel 5, a gas distribution channel 6, a gas air premixing grid 7 and a premixed gas injection Channel 8, the combustion chamber wall 1 is formed by connecting the upper vault and the lower vertical cylindrical wall, the internal space of the combustion chamber wall is the combustion chamber 2, and the vertical cylinder wall of the combustion chamber wall 1 Its axis is staggered from bottom to top, and air intake pipe 3 and gas intake pipe 4 are arranged. The air intake pipe 3 and gas intake pipe 4 are respectively vertically connected to the air distribution channel 5 and the gas distribution channel 6 bu...
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The invention relates to a combustor with coal gas and air premixed grills to achieve spray, backflow, preheating and combustion. The problems that the speed for mixing coal gas and air is low, the coal gas and the air are mixed unevenly, the combustion intensity is low, combustion is incomplete, the combustion space of a combustion chamber is large, and the structure of a combustor is not reasonable are effectively solved. The wall of a combustion chamber is provided with an air inlet pipe and a coal gas inlet pipe. The air inlet pipe and the coal gas inlet pipe are connected with an air distribution channel and a coal gas distribution channel. The coal gas and air premixed grills are arranged between the coal gas distribution channel and the air distribution channel. The coal gas and air premixed grills are communicated with inlets of premixed gas spray channels. Outlets of the premixed gas spray channels are communicated with the portion, inside the wall, of the combustion chamber. The combustor has the advantages that the combustion intensity is high, combustion is stable, fuel is saved, investment is saved, the temperature of exhaust gas is lowered, the emission amount of harmful gas is reduced, and environment pollution is reduced.
Description
technical field [0001] The invention relates to a burner for a hot blast stove of a blast furnace, in particular to a burner for a gas and air grid premixed injection backflow preheating combustion for a hot blast stove providing high-temperature blast for the blast furnace. Background technique [0002] At present, considering energy saving and consumption reduction, blast furnace hot blast stoves are required to obtain high performance and high blast temperature under the combustion of low calorific value blast furnace gas, and finally achieve the goals of high efficiency, energy saving, environmental protection, and increased production. For this reason, an optimized combustion process must be combined with an enhanced heat transfer process in the hot blast stove. This involves the structure of the combustion device, the structure and arrangement of the heat storage body, and the organization of the air flow field, especially the structure and performance of the burner. ...
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IPC IPC(8): C21B9/10
Inventor 陈维汉
Owner 陈维汉