After coal is loaded, negative pressure often occurs in the gas collection pipe. How to address this? Please give me some advice
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After coal is loaded, negative pressure often occurs in the gas collection pipe. How to address this? 6m top-mounted coke oven, coking time of 48 hours. Normally, the pressure in the gas collection pipe fluctuates significantly, ranging from -20 to 350 Pa
An automatic gas collector pressure control device is required
During coal loading, the injection of high-pressure ammonia causes some air to enter the gas collection pipe, resulting in an increase in its pressure – therefore adjustment is necessary: by increasing the angle of the flaps in the gas collection pipe and/or raising the speed of the blower and/or reducing the volume of the large circulation flow； When coal loading is complete, once the coal loading port cover is closed—sealing off the air inlet—the pressure in the gas collection pipe drops suddenly. Another point is that, due to the compressibility of gas, during the initial stage of coal loading (when the pressure in the gas collection pipe increases), it may be possible to over-adjust, which can also cause the pressure in the gas collection pipe to drop – resulting in pressure oscillations.
Can’t the rising pipe flap be automatically controlled and adjusted? If there is no automatic control, just add one, right?