What is the function of the water seal valve at the connection between the bridge pipe and the gas collection pipe, and how does it work?
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As the title suggests, I would like to ask the experts here: what is the function of the water seal valve at the connection between the bridge pipe and the gas collection pipe, and how does it work? Thank you!
During the coking process, when the flap is opened, the water seal prevents the gas collection pipe from coming into contact with the straight section, thus avoiding air from entering the gas collection pipe; it also prevents the raw gas in the gas collection pipe from passing through the straight section and being burned at the outlet of the rising pipe or from causing yellow smoke to be emitted
There is another question: how does one operate smokeless coal loading? What is the working medium for vacuum pumping? How should the gas generated by vacuuming be handled? What is the oxygen content? I’m just starting out with coking, so the questions might be quite simple; I hope everyone won’t laugh at me. Thank you all!
Before being taken out of the furnace, the trough-type flap valve is closed; the circulating ammonia water is sprayed into the groove of the flap valve to create a liquid seal that separates the gas collection pipe from the rising pipe, thereby preventing the escape of raw gas from the gas collection pipe. During coal loading, the flap valve is opened, allowing the gas collection pipe and the rising pipe to be connected. The negative pressure generated by the suction effect of the high-pressure ammonia water spray is used to draw the raw gas into the gas collection pipe, enabling coal loading without any smoke