Rapid switching method for coke oven gas blower

Abstract

The invention relates to a quick reversing method for a coke oven gas blower, which comprises the following steps: 1) starting a standby fan, opening an air inlet valve of the standby fan, controlling the opening degree to be 5-10%, and closing all air outlet valves; (2) the speed of the standby draught fan is increased until the rotating speed is 200-300 r / min smaller than the critical rotating speed of the draught fan, the standby draught fan is stopped from increasing, the standby draught fan stably operates at the rotating speed for 3-5 min, and therefore the operation condition of the standby draught fan is confirmed; (3) the speed of the standby fan continues to be increased to the normal operation rotating speed of the in-use fan, and in the speed increasing process, an air inlet valve and an air outlet valve of the standby fan are opened to the opening degree the same as that of the in-use fan; the speed of the fan is gradually reduced until the fan is stopped, meanwhile, an air outlet valve corresponding to the fan is gradually and completely closed, and the opening degree of an air inlet valve corresponding to the fan is gradually reduced to 5%-10%; according to the method, the quick switching of the gas blower is realized, the influence on the discharging time of the coke oven is reduced, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of reversing a coking gas blower, in particular to a method for quickly reversing a coke oven gas blower. Background technique [0002] In the production process of the coking plant, the gas blower is the key equipment and facility during the process of leading raw gas from the coke oven to the subsequent gas purification process. In the normal production process, the gas blower needs to be stopped after running for about one year Carry out inspection and maintenance. The commonly used shutdown method in the industry is to first stop the active blower and then turn on the standby blower. During the shutdown process, the coke oven needs to be stopped to cooperate with the blower shutdown. This shutdown method requires the coke oven to be ignited and released, and the shutdown requires For a long time, if the shutdown is not timely, the coke oven will smoke, which will affect the normal production of the coke...

AI Technical Summary

Problems solved by technology

The commonly used shutdown method in the industry is to first stop the active blower and then turn on the standby blower. During the shutdown process, the coke oven needs to be stopped to cooperate with the blower shutdown. This shutdown method requires the coke oven to be ignited and released, and the shutdown requires For a long time, if the shutdown is not timely, the coke oven will smoke, which will affect the normal production of the coke oven; at the same time, a large amount of gas release will have a negative impact on environmental protection, and this part of the gas energy will be wasted

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