How to control the pressure in the gas collection pipe effectively
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Thank you very much to everyone for offering your suggestions! ! ! ! ! ! ! ! ! ! ! ! !
Generally, automatic control is used, and the pressure of the gas collection pipe is determined based on the principle that the pressure at the bottom of the carbonization chamber directly below the suction pipe at the end of coking should be no less than 5 pascals.
Our approach is to install an automatic pressure regulation system on the negative-pressure pipeline between the fan and the primary cooler, using this system to stabilize the suction force in that pipeline.
Automated control is adopted, in addition to enhanced inspections.
There is now a type of fuzzy control that offers high sensitivity; the pressure in the gas collection pipe is determined based on the principle that the pressure at the bottom of the carbonization chamber directly below the intake pipe at the end of coking should be no less than five pascals.
First, the factory must scientifically establish pressure standards and allowable fluctuation ranges for the gas collection pipes based on the characteristics of different production stages. Generally, major adjustments are made by the cold drum system, with the intake air ducts automatically adjusting according to set values. In other words: manual operation, in conjunction with an automatic control system. The collector pressure is too important to be left entirely to the \"machine\"!
Reasonable pressure control targets for the gas collection pipes should be established based on actual conditions; in principle, the pressure at the bottom of the carbonization chamber directly below the suction pipe at the end of coking should be no less than 5 pascals in order to determine the pressure for the gas collection pipes. Due to variations in production levels and the capacity of the cold blowers, controlling the pressure in the gas collection ducts at too low a level can easily lead to air leakage in the negative-pressure pipelines, resulting in a higher oxygen content in the gas ； Excessive levels can easily lead to smoke leakage from areas such as the coke oven roof and rising pipes ； Our factory uses a combination of automatic control and manual inspections of the rising tubes, and the control system works quite well ； It’s that there are slight fluctuations in the high-pressure ammonia solution when loading coal. I hope other friends have good solutions they can share; thank you!
The pressure in the gas collection system is difficult to adjust; it’s not something that can be solved simply by installing a control system. There are many factors at play, including those related to the coke oven itself, the regulators, as well as the pressure downstream of the machine. We have also carried out practices in this area, but we can only achieve something similar.
Thank you for your advice. . . . . . . . . . . . . . .
Adjust the fan speed to maintain the pressure in the gas collection duct