Online production coke oven combustion chamber furnace end sealing method

Abstract

An online production coke oven combustion chamber furnace end sealing method comprises the following steps: 1) drilling a combustion chamber furnace end; 2) performing air pressure sealing on the combustion chamber furnace end; and 3) grouting the combustion chamber furnace end to make the slurry extend into the bottom of a drilled hole in the combustion chamber furnace end through a slurry spraying pipe, and grouting for the second time till complete sealing is achieved; and then blocking the grouting hole by castable, knocking ceramic fiber ropes into a protection plate and the upper portion of the furnace end, and then building upper furnace end bricks. According to the method, sealing material injection, high-fluidity grouting material pouring and grouting material press-in are conducted between the combustion chamber furnace wall furnace end and the large protection plate, large and small gaps caused by long-time production between the carbonization chamber furnace end and the protection plate are effectively blocked, therefore, furnace end sealing is achieved, raw gas overflow is avoided, and the working environment is protected.

Description

technical field [0001] The invention relates to coke oven technology, in particular to a method for sealing the head of a combustion chamber of an on-line coke oven. Background technique [0002] In the middle and late stages of the coke oven service life, abnormal phenomena such as uneven expansion of the furnace body, deformation of the furnace wall, and breakage of the protective plate occur in the coke oven combustion chamber to varying degrees. When the above phenomena occur, the coke oven in operation will produce burner In other words, during the normal production process of the coke oven, after the combustion chamber is charged with coal, the coal material in the combustion chamber begins to decompose due to heat, and the raw coal gas formed by various components in the coal material is rapidly produced, and the gas in the combustion chamber The pressure rises, and due to the poor sealing of the furnace wall, the raw gas overflows. Especially after the coke oven has...

AI Technical Summary

Problems solved by technology

[0004]① Due to the long-term mechanical impact, the large protective plate and the masonry have disengaged, which reduces the sealing of the combustion chamber burner

[0005]②The large protective plate was broken to varying degrees, which accelerated the reduction of the sealing degree of the burner head of the combustion chamber

[0010]When replacing the large protective plate of one hole combustion chamber, the steel column must be removed first, and the production of two adjacent combustion chambers must be stopped for three days, which affects the production of the coke oven and is time-consuming and laborious And the cost is huge

At the same time, due to the need to cool down the coke oven during the replacement process, this in turn affects the tightness of the coke oven masonry, and the phenomenon of waste gas overflow will still occur

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