Method for detecting blowby of oven wall of carbonization chamber of coke oven

Abstract

The invention relates to a method for detecting blowby of the oven wall of a carbonization chamber of a coke oven, belongs to the technical field of coke oven body detection and is used for detecting the blowby of the oven wall of the carbonization chamber of the coke oven. The method has the technical scheme that when the sealing of the oven wall of the carbonization chamber is not tight, SO2 in exhaust gas exhausted by a combustion chamber is mainly caused by combustion of raw gas in blowby from the carbonization chamber to the combustion chamber; the blowby degree of the carbonization chamber of the coke oven can be judged by comparing the quantity of SO2 contained in exhaust gas in the exchange process and the non-exchange process. The practical application effect is good; whether the blowby exists between brick seams of the oven wall of the oven furnace or not can be checked; the method can also be used for guiding the repair on the wall surface of the carbonization chamber of the coke oven, so that the fluctuation amplitude of the content of sulfur dioxide in the exhaust gas generated through coking heating is reduced; the coke oven chimney particulate matter content tends to be stable; the further expansion of cracks is prevented; the service life of an oven body is prolonged; the environment pollution caused by reasons such as oven wall blowby is reduced; the potential safety hazard is eliminated; the economic benefits of enterprises are improved.

Description

technical field [0001] The invention relates to a method for detecting leaking of a furnace wall of a coke oven carbonization chamber, and belongs to the technical field of detection methods for a coke oven body. Background technique [0002] During the heating process of the coke oven after the completion of the oven, the carbonization chamber and the bricks on the top of the vertical flue gradually start to heat up until the oven is finished and the normal heating starts. The temperature difference between the top surface bricks and the carbonization chamber and the top of the vertical flue reaches the maximum Due to the difference in temperature, the expansion of the bricks on the top of the carbonization chamber is much larger than that of the surface bricks on the furnace roof, and there is a displacement between the upper and lower brick layers, resulting in a horizontal gap. In the carbonization chamber and the internal brick layer of the vertical fire channel, the di...

AI Technical Summary

Problems solved by technology

At this time, the raw coal gas will leak into the combustion chamber and burn in the combustion chamber, causing the temperature to rise locally and corrode the furnace wall. If it is not found and treated in time, the gap will gradually expand, and the bricks on the wall of the carbonization chamber will be gradually damaged. , Raw coal gas began to increase into the vertical flue, resulting in aggravated fluctuations in furnace temperature, increased SO2 content in exhaust gas, sharply shortened service life of coke ovens, smoke from chimneys and other adverse effects

[0003] At present, judging whether there is leakage in the furnace wall of the coke oven carbonization chamber is mainly based on visual observation and empirical judgment, that is, whether there is fire on the top of the regenerator, whether the gas ash at the air inlet door has increased, and whether there is smoke from the flue wall. There is no scientific basis for subjective judgments such as igniting, observing whether there is blue flame in the small flue through the pressure measuring hole of the exhaust gas pan, and artificially increasing the pressure of the combustion chamber on both sides after the coke push is completed, to see whether there is flame on the wall of the carbonization chamber. The method for detecting leakage of the coke oven wall has not been effectively solved so far, which is not conducive to the timely repair of the gap in the furnace wall, which not only shortens the service life of the coke oven, affects the smooth progress of production, but also has certain The safety hazards have become a difficult problem in the maintenance of the coke oven carbonization chamber, which needs to be solved urgently

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