Modification method for adjusting pressure of single-hole carbonization chamber in existing coke oven

Abstract

The invention relates to a modification method for adjusting pressure of a single-hole carbonization chamber in an existing coke oven. The modification method includes 1), mounting a pressure measurement pipe guide sleeve on a bridge pipe, penetrating a pressure measurement pipe into the pressure measurement pipe guide sleeve to enter the bridge pipe, enabling the extending end to be located at the spraying range of an ammonia water spray nozzle, mounting an actuator on a gas collection pipe operating platform or a gas collection pipe, connecting the power output end of the actuator with a moving rod of a water-sealed valve disc, and connecting the pressure measurement pipe and the actuator with a computer control system; 2), according to different quantities of raw coke oven gas, generated in different working periods, of the coke oven, adjusting the pressure of the bridge pipe based on three adjustment stages, namely earlier stage, middle stage and last stage, and enabling the pressure in the carbonization chamber to be constantly kept micro positive from coal feeding to coke discharging. The modification method has the advantages that the existing coke oven can have a function of automatically adjusting the pressure of the single-hole carbonization chamber; the structure and the method are simple and easy, the modification method is quite suitable for modification of existing coke ovens, and modification without oven shutdown can be realized.

Description

technical field [0001] The invention relates to the technical field of pressure regulation of a coke oven carbonization chamber, in particular to a modification method for realizing pressure regulation of a single-hole carbonization chamber in an existing coke oven. Background technique [0002] At present, the pressure in the carbonization chamber of the coke oven is mainly regulated by the gas collecting pipe for the entire furnace group. Due to the different coking states of each carbonization chamber of the coke oven, pressure fluctuations are likely to occur, which will adversely affect the production of the coke oven. [0003] The Chinese patent with the application number 200910134202.4 (the application date is April 1, 2009) discloses "a coke oven carbonization chamber pressure automatic adjustment method and device", which changes the raw gas by controlling the opening of the water seal valve disc. The size of the passing section of the water seal valve device in th...

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Problems solved by technology

[0004] The technical solutions described in the above patents are suitable for new coke oven projects, but the existing coke ovens cannot form pressure feedback because there is no pressure measuring device on the bridge tube, and the coke oven water seal valve disc has no controllable adjustment means, and the existing water The water seal depth of the sealing valve plate is limited, and simple adjustment cannot meet the pressure stability requirements at the end of coking

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