Industrial boiler combustion method

Abstract

The invention relates to a combusting method for an industrial boiler, which is characterized in that an old style boiler adopts the method that a fire grate at the bottom of the old style boiler is removed, to form a pure furnace chamber I; at least one combustor H is installed at one side of the pure furnace chamber I; coal powder E enters into the combustor H after entering into an electronic scale G through a coal scuttle F; the coal powder E performs the complete process of mixture with the air, firing, reinforced combustion, deoxidization of NOx, combustion into ash, liquid slugging and low NOx discharging inside the combustor H, and finally the pure high temperature fume is transmitted to the pure furnace chamber I and absorbed and utilized through a smoke flue J; a novel boiler adopts the method that a boiler with a pure furnace chamber is manufactured; the second to the forth steps are identical to the combusting method of the old style boiler. The combusting method has advantages that the combustion is sufficient, the effects of energy conservation and discharge reducing are remarkable, the pollution is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to a combustion method of an industrial boiler, which is applicable to combustion devices for various industrial productions such as 2-35 ton steam and hot water boilers, kilns, forging, steelmaking, road and bridge mixing stations and cold aggregate heating, etc. , belongs to the technical field of pulverized coal burners. Background technique [0002] Chain boiler is a furnace type widely used in industrial boilers at present. As shown in Figure 1, it includes boiler furnace C and chain grate B. Fuel coal A enters the boiler and burns in layers on chain grate B. The combustion flue gas flows from The outlet D of the boiler furnace C is discharged. The disadvantage of this kind of boiler is that the mixture with the air is not sufficient during combustion, resulting in incomplete combustion, low combustion rate, and q 4 Large loss, exhaust smoke contains NOx, SO 2 , High dust concentration, and pollute the environment. In order...

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Problems solved by technology

[0002] Chain boiler is a furnace type widely used in industrial boilers at present. As shown in Figure 1, it includes boiler furnace C and chain grate B. Fuel coal A enters the boiler and burns in layers on chain grate B. The combustion flue gas flows from The outlet D of the boiler furnace C is discharged. The disadvantage of this kind of boiler is that the mixture with the air is not sufficient during combustion, resulting in incomplete combustion, low combustion rate, and q 4 Large loss, exhaust smoke contains NOx, SO 2 , high dust concentration, and pollute the environment. In order to solve these problems, people have improved the structure of industrial boilers, but they have not changed the traditional combustion method, and the effect is not ideal.

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