Front coal gasification grate-firing device and combustion method thereof

Abstract

The invention discloses a front coal gasification grate-firing device and a combustion method thereof. By the aid of the front coal gasification grate-firing device and the combustion method thereof, the problems of emission of the high NOx content and the high SOx content of traditional chain layer burners are solved, and the boiler efficiency is improved. The front coal gasification grate-firing device comprises a coal bucket, a coal gasification chamber and a coke discharge pipe which are communicated sequentially, a gas pipe is arranged at the top of the coal gasification chamber, an injection nozzle is arranged inside the gas pipe, communicated with a secondary air pipeline through an injection air pipeline and parallel with the secondary air pipeline, an opening of the injection nozzle faces towards a hearth, the secondary air pipeline and the gas pipe are arranged in parallel in an up-and-down mode and communicated with the hearth, a bottom bellows is installed at the bottom of the coal gasification chamber, communicated with a gasification air pipeline and communicated with the coal gasification chamber through a fire grate I, the fire grate I is inclined towards the inlet direction of the coke discharge pipe, a coke breaking machine is installed at the position of an inlet of the coke discharge pipe, and an outlet of the coke discharge pipe is located above a fire grate II at the bottom of the hearth.

Description

technical field [0001] The invention relates to a coal gasification layer combustion device, in particular to a front coal gasification layer combustion device and a combustion method thereof. It belongs to the field of clean energy technology. Background technique [0002] At this stage, my country's energy structure is dominated by coal-fired. The air pollutants produced during coal combustion account for about 70% of the total air pollutants, and NOx accounts for 67% of the total emissions. The harm of NOx is very serious, NOx is poisonous and easily combined with hemoglobin in animal blood, which makes the blood hypoxic and causes central nervous paralysis; NO 2 Photochemical smog is formed under strong ultraviolet radiation. When the content of photochemical toxic smog exceeds 0.3ppm, it will strongly stimulate human senses and cause adverse reactions; NOx and SO 2 Coexisting with dust can generate more toxic nitric acid and form acid rain. In 2007, my country's tot...

AI Technical Summary

Problems solved by technology

The invention can effectively suppress the generation of NOx, realize desulfurization in the furnace, solve the problem of high NOx and high SOx emission of the traditional chain layer combustion furnace, and improve the efficiency of the boiler by realizing complete combustion of fuel

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