May I ask what specific gases are involved in the reversal of coke oven gas?
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May I ask what specific gases are referred to as coke oven gas? The book says to turn off the gas first, then exchange the air and exhaust gases, and finally turn the gas on? Why is it necessary to reverse direction? Thank you, expert
Does all the heat in the coke oven regenerator come from the waste gas?
1. First, turn off the gas by using a reversing mechanism and a pull rod to move the switch valve in the basement to the middle position, thereby shutting off the gas and preventing it from entering the vertical flue；
2. Air-waste exchange refers to the reversal of air and waste gas flow using the exhaust valves in the individual smoke ducts； 3. Turn on the gas by switching the selector valve to the other position; otherwise the stove will be damaged. This is done to ensure even heating throughout the stove. Just go to the basement and take a look, and you’ll understand everything
First question: Why exchange? The coke oven has dual flues, one ascending and one descending, in order to ensure uniform furnace temperature, even heating of the coal cakes, and consistent maturation of the coal cakes. Exchange every 30 minutes. Second question: order of exchange. The first step is to cut off the gas supply, so that all the gas in the vertical flue can burn completely; no gas should remain to prevent the formation of an explosive mixture. The second step is empty waste exchange. In the third step, gas is supplied; at this point, there is sufficient air in the flame channel to support combustion. In fact, the entire design concept of the exchange system is to stay away from the explosive range of coke oven gas.