Air-preheating-type heat recovery coke oven

Abstract

The invention relates to an air-preheating-type heat recovery coke oven. The air-preheating-type heat recovery coke oven comprises a combustion chamber, a carbonization chamber, a chute, a pressure balance chamber, a criss-cross exhaust gas flue and a combustion air distribution channel, wherein the chute is connected between the combustion chamber and the pressure balance chamber; the criss-crossexhaust gas flue is arranged at the lower portion of the pressure balance chamber and communicated with the pressure balance chamber; the combustion air distribution channel is arranged at the lowerportion of the criss-cross exhaust gas flue; an air preheating upright channel is arranged in a main wall below the combustion chamber and communicated with the combustion air distribution channel; anupright fire flue partition combustion air channel is arranged in upright fire flue partitions and communicated with the air preheating upright channel; an outlet of the upright fire flue partition combustion air channel is communicated with upright fire flues of the combustion chamber. According to the air-preheating-type heat recovery coke oven, combustion air is uniformly distributed and supplied into the upright fire flues of the combustion chamber and merged with raw coke oven gas in the upright fire flues for combustion after being subjected to sufficient heat transfer and temperature rise with high-temperature exhaust gas, so that the combustion temperature is increased, the coking time is shortened, and the purpose of improving the production efficiency is achieved.

Description

technical field [0001] The invention relates to the technical field of coking equipment, in particular to an air preheating heat recovery coke oven. Background technique [0002] The coking industry is a basic industry with high pollution, high emissions and high energy consumption. It produces and provides an important raw material - coke for the iron and steel industry. Conventional coke oven is an important source of pollution, the main pollutants include waste gas, waste water and dust. As the production capacity of the domestic iron and steel industry tends to be saturated and environmental protection becomes increasingly stringent, the coking industry is bound to phase out outdated production capacity and undergo transformation and upgrading. During the production process of conventional coke ovens, the carbonization chamber is always in a positive pressure state, so there are unavoidable bursts of smoke and dust overflow, especially in the process of coal charging an...

AI Technical Summary

Problems solved by technology

[0005] At present, in the production process of vertical heat recovery coke ovens, the combustion-supporting air for burning raw coal gas is inhaled by the negative pressure of the coke oven body at normal temperature and pressure (natural state), and there is no process of fully preheating the air, so the raw coal gas is in the vertical fire channel The combustion temperature (standard temperature ~ 1200 ℃) is low, resulting in coking time (36 ~ 40 hours) longer than conventional coke oven (15 ~ 26 hours), and the production efficiency is not high

Therefore, the above factors have brought certain restrictions and difficulties to the promotion and development of the vertical heat recovery coke oven coking process

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