Tertiary air inlet for heat recovery coke oven

Abstract

The invention belongs to the technical field of heat recovery coke ovens in the metallurgical industry, and particularly relates to a tertiary air inlet for a heat recovery coke oven, wherein the tertiary air inlet is characterized in that the tertiary air inlet is arranged on the pipe wall of an ascending pipe and comprises an air inlet pipe and a valve component, an included angle of 45-60 degrees is formed between the axis direction of the air inlet pipe and the pipe wall, and the inner end of the air inlet pipe is flush with the inner side of the pipe wall of the ascending pipe or continues to stretch into the ascending pipe by 10-50 mm; and the ratio of the diameter of the air inlet pipe to the diameter of the ascending pipe mounting section is 1:(3-8). Compared with the prior art, the tertiary air inlet has the beneficial effects that the problems that the generation amount of coal gas is greatly changed along with volatile components, coking time and the like of mixed coal in the heat recovery coke oven production in the current metallurgical industry, the air introduction amount of the primary and secondary air inlets of the coke oven cannot be accurately matched with raw coke oven gas, so that combustible components still escape along with a gas collection system, and the environment is polluted are solved.

Description

technical field [0001] The invention belongs to the technical field of heat recovery coke ovens in the metallurgical industry, and in particular relates to a tertiary air inlet for heat recovery coke ovens. Background technique [0002] The heat recovery coke oven has gradually become a rising star in the coking industry due to its simple process flow and technical characteristics of energy saving, consumption reduction and emission reduction. The technological process of the heat recovery coke oven is that the coal is tamped and sent into the carbonization chamber. During the coking process, the coal produces a large amount of raw gas. The raw gas and the air introduced from the primary air inlet are burned in the upper space of the carbonization chamber. The unburned and unburned raw gas enters the lower combustion chamber through the descending channels on both sides, and the mixed gas is further combusted with the air introduced from the secondary air inlet. , to create...

AI Technical Summary

Problems solved by technology

[0003] Since the existing heat recovery technology is not yet perfect, the amount of gas produced varies greatly with the volatile matter of blended coal, coking time, etc., and the amount of air introduced into the primary and secondary air inlets of the coke oven cannot be formed accurately with the raw gas. Therefore, there is still a small amount of combustible components exported with the gas collection system, polluting the environment

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