Heating Method of Partial Combustion Chamber of Coke Oven by Replacing Coal Gas

Abstract

The invention discloses a coke oven partial combustion chamber gas exchange and heating method. The method includes the steps that firstly, when an oven wall of an Nth coking chamber needs to be repaired, gas inflow of the Nth row, the (N+1)th row and the (N+2)th row of blast furnaces is shut off, and gas inflow of the (N-1)th row, the Nth row, the (N+1)th row and the (N+2)th row of coke ovens is started; secondly, the cover plate opening degree of air inlet doors of an Nth, an (N+1)th and an (N+2)th exchange opening and closing devices of a flue is increased, and the turning plate opening degree of an (N-1)th, the Nth, the (N+1)th, the (N+2)th and an (N+3)th exchange opening and closing devices of the flue is reduced; thirdly, after flame on the top of the furnaces is normal, a four-way small porous plate needing to be cooled and corresponding to a fire path is taken off and replaced with a blind plate, and the oven wall of the Nth coking chamber is repaired; fourthly, after the oven wall is repaired, the doors are heated, and after the temperature of the fire path reaches the kindling point, the blind plate is taken off and replaced with the original small porous plate; fifthly, gas inflow of the coke ovens in the first step is shut off, the cover plate opening degree of the air inlet doors of the exchange opening and closing devices and the turning plate opening degree of the exchange opening and closing devices in the second step are restored, and gas inflow of the blast furnaces in the first step is restored. The method has the advantages of being safe and convenient to use.

Description

technical field [0001] The invention belongs to the technical field of coke oven heating control methods, in particular to a coke oven partial combustion chamber replacement gas heating method. Background technique [0002] For double-fired channels, down-spray reheating coke ovens, heating gas pipelines are equipped with coke oven gas, blast furnace gas and their mixed gas pipelines. In order to save high-quality coke oven gas and balance the pressure of the company's gas pipeline network, most of the time Heating with blast furnace gas. With the increase of the age of the coke oven put into operation, the coke oven body, especially the 1-2 furnace wall of the machine side furnace, is seriously damaged due to various reasons. On the one hand, the coke oven carbonization chamber and the combustion chamber are connected, and the chimney emits smoke, which pollutes the environment; As a result, the flue cannot be heated normally, which seriously affects the furnace temperatu...

AI Technical Summary

Problems solved by technology

The gas replacement work for the entire furnace is not only complicated, but requires many personnel and a large workload, and there are great potential safety hazards. Moreover, due to the large fluctuation of suction during the replacement process, it is very easy to cause blockage of the coke oven gas heating standpipe, and frequent Gas replacement is also one of the factors that shorten the life of coke ovens

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