Sealing and ventilation dust removal device and method of coke oven

Abstract

The invention provides a sealing and ventilation dust removal device and method of a coke oven. The sealing and ventilation dust removal device comprises a closed workshop formed by hanging walls, parallel string-net racks, pressure bars, corner braces, a roof, purlines, drawing bars, workshop columns, inter-column braces and the like; dust removal equipment such as an electric valve, a pneumaticvalve, a coke-side smoke exhaust cover, a rising pipe smoke exhaust cover, a furnace top smoke exhaust cover, a compensator, a draught fan, a pulse bag-type dust collector, a chimney and the like; andventilation equipment such as a fresh air pipeline, a primary effect filter, a surface cooler, a refrigerator unit, an air supplier and the like. The method comprises the following steps: 1, sealing;2, ventilating; 3, collecting dust; 4, accident diffusing; 5, smoke conveying pipeline; and 6, treating and discharging the smoke. The sealing and ventilation dust removal device and method have theadvantages that all coke oven smoke released from the top of a coal loader, a rising pipe and a coke extinguishing tank can be collected in a closed space; and by virtue of the ventilation system andaccident treatment system, the labor environment of the operation workers can be improved, the adverse influence of the environment pollution for the operation workers can be reduced, the coke oven smoke can be discharged by reaching standard after the dust removal treatment, and the discharging concentration is less than or equal to 10 mg/Nm3.

Description

Technical field: [0001] The invention relates to the technical field of coking auxiliary equipment and technology, in particular to a coke oven flue gas treatment device and method. Background technique: [0002] In the prior art, the coke oven has flue gas overflow during coal charging and coke discharge, flue gas escapes during the opening operation of the rising pipe cover and the walking process of the quenching tank, and the furnace door and the coal charging hole are not tightly sealed. Flue gas leaks, and the collection of these flue gases causes the concentration of particulate matter on the top of the coke oven and the factory boundary to exceed the standard. The problem of environmental pollution caused by the overflow of flue gas from these furnaces urgently needs to deal with the problem of fugitive emissions from the dust production points of coke ovens. However, at present, only one coking plant in China has added a fugitive dust collection and treatment devic...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the coke oven has flue gas overflow during coal charging and coke discharge, flue gas escapes during the opening operation of the rising pipe cover and the walking process of the quenching tank, and the furnace door and the coal charging hole are not tightly sealed. Flue gas leaks, and the collection of these flue gases causes the concentration of particulate matter on the top of the coke oven and the factory boundary to exceed the standard. The problem of environmental pollution caused by the overflow of flue gas from the furnace, it is urgent to deal with the problem of unorganized emission of coke oven dust production

However, at present, only one coking plant in China has added a fugitive dust collection and treatment device on a 2×58-hole 6m coke oven. The flue gas is collected centrally after rising, so it is impossible to realize the separate collection and automatic control of the flue gas at each dust collection point; and the two ends of the flue dust collection cover are respectively supported on the coke oven, which increases the load of the coke oven

Due to the installation of windproof nets around the coke oven, there is a certain distance between the windproof nets and the dust collection cover, resulting in a large operating area, so that the dust collection and treatment facilities collect a large amount of wild wind, thereby reducing the dust removal effect, and there is still the problem of loose smoke overflowing

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