Method for stabilizing pressure of gas collection pipe of coke oven

Abstract

The invention provides a method for stabilizing pressure of a gas collection pipe of a coke oven. The method comprises the following steps: additionally arranging one set of turning plate automatic adjusting system in a coal gas pipeline in front of an inlet of a coal gas air blower, and forming interlocking between the turning plate automatic adjusting system and a suction force control point in front of the air blower; calibrating a reasonable suction force range in front of a primary cooler to be 1500+ / -200Pa; calibrating a reasonable working range of a turning plate adjustment in front of the air blower to be 30 percent to 70 percent; adjusting a rotary speed of a hydraulic coupler of the air blower and the turning plate adjustment to be automatic and controlling the opening degree of the turning plate to be 30 percent to 70 percent; manually adjusting the rotary speed of the hydraulic coupler of the air blower according to changes of a coal gas generation amount; manually adjusting the number of turns for opening circulating pipe valves; finally, manually adjusting the opening degree of an inlet valve of the air blower. According to the method provided by the invention, the stability of a suction force in front of the primary cooler can be ensured, the percent of pass in a range of 1500+ / -200Pa is 95 percent or above and the percent of pass in a range of 160+ / -40Pa is 96 percent or above; damages to a furnace protection iron piece and equipment, caused by the fact that pressure in the gas collection pipe has great fluctuation, are extremely reduced, and loss of byproducts is avoided.

Description

technical field [0001] The invention belongs to the technical field of coking technology, and relates to a method for stabilizing the pressure of a gas collecting pipe of a coke oven. Background technique [0002] In recent years, a large number of large coke ovens of 6 meters or even more than 7 meters have been built successively in China. The gas outlet system is a two-stage gas collecting pipe. The gas blower adopts a hydraulic coupling to automatically adjust the speed to stabilize the suction of the blower. The flap automatically adjusts and stabilizes the pressure of the air collecting pipe. After these coke ovens are put into production and operation, there is a common problem of large pressure fluctuations in the coke oven gas collecting pipe. Super high pressure often occurs, causing smoke and fire in the furnace door and other parts, or even the gas is released, or there is extremely low pressure coke oven negative pressure, causing furnace Body leakage will not ...

AI Technical Summary

Problems solved by technology

[0004] 1. The automatic speed regulation of the hydraulic coupler of the blower lags behind, resulting in a large range of fluctuations in the suction of the blower, making it impossible for the pressure regulator on the air collecting pipe to achieve fine adjustment to stabilize the pressure of the air collecting pipe

At the same time, due to the lag of the suction adjustment of the blower, it also has a coupling effect with the automatic adjustment system on the air collecting pipe, and interferes with each other.

[0005] 2. The segmented air collector pressure regulator itself also has a coupling effect, which is prone to "surge" phenomenon and mutual interference when the blower suction fluctuates greatly;

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