Leakage detection method for waste heat recovery device of ascension pipe of coke-oven raw gas

Abstract

The invention discloses a leakage detection method for a waste heat recovery device of an ascension pipe of coke-oven raw gas. The method comprises the following steps: 1) communicating an annular cavity of at least one waste heat recovery device of the ascension pipe with an air bag filled with inert gas through a pipeline, and arranging a flow meter on the pipeline; and 2) enabling the waste heat recovery device of the ascension pipe to work and judging the existence of leakage of the waste heat recovery device of the ascension pipe with the flow meter and the part of the leakage: when the flow meter indicates that there is no obvious continuous flow signal of gas, the waste heat recovery device of the ascension pipe is free of leakage; when the flow meter indicates that there is an obvious continuous flow signal of gas and the gas flows from the waste heat recovery device of the ascension pipe to the air bag, the leakage occurs at a coil 8 inside the waste heat recovery device of the ascension pipe and when the flow meter indicates that there is an obvious continuous flow signal of gas and the gas flows from the air bag to the waste heat recovery device of the ascension pipe the leakage occurs at an inner tank of the waste heat recovery device of the ascension pipe.

Description

technical field [0001] The invention relates to a coke oven waste heat recovery technology, in particular to a leak detection method of a coke oven raw gas riser waste heat recovery device. Background technique [0002] Usually, the structure of waste heat recovery device of coke oven raw gas rising pipe is as follows: it is composed of an inner cylinder and an outer cylinder. Inside the cavity, the coil is filled with heat exchange medium, such as water or heat transfer oil. [0003] The riser waste heat recovery device may be damaged due to thermal expansion and contraction, thermal stress, external force impact, corrosion and other reasons during operation, such as perforation, cracks and the like. After the device is damaged, not only can it not work normally, but also if the heat exchange medium enters the coke oven, it will affect the normal production and even cause accidents. At present, there is no method to timely and effectively discover and judge the leakage of...

AI Technical Summary

Problems solved by technology

After the device is damaged, not only can it not work normally, but also if the heat exchange medium enters the coke oven, it will affect the normal production and even cause accidents

At present, there is no method to detect and judge the leakage of the riser waste heat recovery device in a timely and effective manner

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