Device and method for pressure regulation of coke oven carbonization chamber

Abstract

The invention relates to a device and method for pressure regulation of a coke oven carbonization chamber. The regulation device comprises a water-sealed valve and a throttle. The throttle is composed of a casing, an overturning plate, an overflow channel and a rotating shaft. The casing is fixed between an axle tube and a water-sealed valve body. The overturning plate is installed in the casing through the rotating shaft, the rotating shaft is driven by an execution mechanism and can drive the overturning plate to rotate; and the overflow channel is arranged at the bottom of the overturning plate to be used for forming an ammonia water water seal and performing overflow of ammonia water. The axle tube is provided with a pressure measurement device. The pressure measurement device and the execution mechanism are connected with a control system. The structural form of combining the throttle and the water-sealed valve is adopted, the throttle overturning plate is utilized to regulate pressure of the carbonization chamber, the water seal of the water-sealed valve is utilized to cut off raw gas during coke pushing, finally the goals that smoke is prevented from escaping during coal charging into a coke oven and during a coking period, negative pressure of the carbonization chamber during a coking terminal stage is avoided and air is prevented from leaking into the carbonization chamber to damage coke by fire and damage an oven body are achieved. The device is simple in structure, easy to implement and particularly suitable for modification of an existing coke oven gas gathering system.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a pressure regulating device and method for a coke oven carbonization chamber. Background technique [0002] At present, the pressure of the coke oven carbonization chamber at home and abroad is mainly regulated by the gas collecting pipe for the entire furnace group. Due to the different coking states of the various coking chambers of the coke oven, pressure fluctuations are likely to occur, which will bring adverse effects on the production of the coke oven. For example: the amount of raw gas in the carbonization chamber during coal charging and in the early stage of coking is not enough to be introduced into the gas collection pipe, and sometimes even the raw gas in the gas collection pipe flows backwards, causing a large amount of raw gas to escape, seriously affecting the atmospheric environment around the coke oven, and causing waste gas Waste of resources, or cause the coa...

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Problems solved by technology

[0004] 1) The valve plate not only needs to realize the task of cutting off and sealing, but also needs to complete the task of adjusting pressure. Due to the limitation of its structure, it is difficult for the valve plate to be seamlessly connected with the inner wall of the valve. There is no traditional water-sealed valve in the bridge pipe. When Insufficient flow of ammonia water spraying or when the supply is stopped, it is very easy to cause the height of the water seal to be reduced or even to have no water seal, so that the air collecting pipe is connected with the outside atmosphere, resulting in the mixing of air and raw gas and causing accidents;

[0005] 2) The blister is easily blocked by tar and coal powder, causing the liquid level of the ammonia water seal to rise, or even flowing back into the riser and carbonization chamber, causing damage to the furnace wall bricks, which brings certain difficulties and hidden dangers to the use and maintenance;

[0006] 3) It is only suitable for new coke ovens, and it is impossible to renovate old coke ovens without stopping the furnace

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