A boiler coke oven gas pipeline and its cleaning method

Abstract

The invention provides a coke oven gas pipeline of a boiler and a cleaning method thereof. The gas pipeline comprises a pipeline main body, a burner positioned at one end of the pipeline main body, a fast valve arranged on the pipeline main body, and a regulating valve arranged on the pipeline main body and positioned at the side, which is adjacent to the burner, of the fast valve, wherein a reserved pipe orifice is arranged on the pipeline main body between the fast valve and the regulating valve and is used for connecting a nitrogen pipeline, at least two sections of pipelines between the regulating valve and the burner are detachable pipelines, and the pipelines are connected by virtue of detachable connecting pieces. By adopting the cleaning method, tar on the coke oven gas pipeline and the burner can be cleaned while the boiler runs, so that the maximum burning quantity of the coke oven gas of the boiler can be maintained.

Description

technical field [0001] The invention relates to a boiler coke oven gas pipeline and a cleaning method thereof, more specifically, the invention relates to a boiler coke oven gas pipeline which can be cleaned online and a cleaning method thereof. Background technique [0002] Because coke oven gas contains macromolecular hydrocarbons and sulfides, these substances are easy to deposit in the pipeline or cause corrosion to the pipeline in a wet environment to form rust residue, which will lead to pipeline blockage and reduce the coke oven gas combustion. Part of the tar hangs on the regulating valve and affects the switch of the regulating valve, making it impossible to fully open, which will also lead to a decrease in the boiler coke oven gas burning volume and difficulty in operation adjustment. [0003] At the same time, when coke oven gas flows through the burner, tar is easy to hang on the burner, forming burner coking, and the longer the operation time, the more coking, t...

AI Technical Summary

Problems solved by technology

[0002] Because the coke oven gas contains macromolecular hydrocarbons and sulfides, these substances are easy to deposit in the pipeline or cause corrosion to the pipeline in a wet environment to form rust residue, which will lead to pipeline blockage and reduce the combustion of coke oven gas

Part of the tar hangs on the control valve and affects the switch of the control valve, making it impossible to fully open, which will also lead to a decrease in the boiler coke oven gas burning volume and difficulty in operation adjustment

[0003] At the same time, when coke oven gas flows through the burner, tar is easy to hang on the burner, forming burner coking, and the longer the operation time, the more coking, the higher the coking coal amount, the faster the clogging speed, causing the flow area of ​​the burner to gradually shrink. Cause the burner to be blocked, and the burning volume will gradually decrease

[0004] In the prior art, when the coke oven gas pipeline and the burner are blocked, the burner can only be cleaned of tar after the boiler is shut down, and the boiler is frequently shut down, affecting normal production

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