Coke oven flue gas collection device and method

By designing a coke oven flue gas collection device and utilizing a combination of solenoid valves and induced draft fans, the problem of flue gas escape during non-operational conditions of the coke oven was solved, achieving efficient flue gas collection and ultra-low emissions under all operating conditions, simplifying the device structure and reducing costs.

CN122104251APending Publication Date: 2026-05-29INNER MONGOLIA JINSHI MAGNESIUM IND
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
INNER MONGOLIA JINSHI MAGNESIUM IND
Filing Date
2026-03-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing coke oven flue gas collection devices cannot effectively handle the escape of raw coal gas during non-operational conditions, resulting in the release of toxic and harmful pollutants and regional air pollution, and failing to meet ultra-low emission requirements.

Method used

Design a coke oven flue gas collection device, including collection component one and collection component two. The opening of the sub-solenoid valve and the negative pressure of the induced draft fan are adjusted by the controller to collect flue gas under coal charging or coke discharging conditions and non-operation conditions. The opening of the sub-solenoid valve is adjusted in real time by the dust concentration detector to construct an independent flue gas collection system.

Benefits of technology

It enables the collection of flue gas under all operating conditions of the coke oven, reduces flue gas overflow, meets ultra-low emission requirements, improves collection speed and system automation level, extends the service life of the equipment, and reduces modification and operating costs.

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Abstract

The present application relates to the field of environmental protection treatment technology of coking industry, and particularly relates to a coke oven flue gas collecting device and method. The coke oven flue gas collecting device comprises a collecting assembly one, a collecting assembly two, a controller and a plurality of dust hoods. The dust hood is provided with an air outlet one, an air outlet two and a dust concentration detector. The collecting assembly one comprises a flue gas pipeline one and a sub-magnetic valve one for controlling the opening degree of the air outlet one. The collecting assembly two comprises a flue gas pipeline two, an induced draft fan one and a sub-magnetic valve two for controlling the opening degree of the air outlet two. The controller is used to start the collecting assembly one under the conditions of coal charging or coke discharging. The controller is also used to adjust the opening degree of the sub-magnetic valve two to 5%~10% under the non-working condition, and to adjust the opening degree of the sub-magnetic valve two in real time according to the concentration value of the dust concentration detector. The present scheme can effectively collect the flue gas under the full working condition of the coke oven, greatly reduce the flue gas overflow, and meet the requirement of ultra-low flue gas emission.
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