Why does the temperature of the gas header suddenly rise after loading coal?
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Why does the temperature of the gas collecting pipe suddenly rise after loading coal? Is the bridge pipe blocked or something else?
You may not have observed carefully enough. The main temperature increase is No. 4 near the tar box. I have noticed this issue very early on. This is mainly because after the coal is loaded, the gas instantly enters the gas collecting pipe. The gas volume is large and the ammonia water cannot be cooled. The main reason is that the detection point of the gas collecting pipe temperature is right there. In fact, this temperature is an illusion. A few minutes after the coal is loaded, it will naturally return to normal.
Check the spraying of low-pressure ammonia water,
Yan Xiangsi is right: victory:
In addition to Yan Xiangsi’s analysis, I think there are the following reasons: Due to the increase in gas generation just after coal installation, the pressure in the gas collecting pipe rises rapidly, especially in coke ovens with poor automatic adjustment. The temperature of the coalification chamber has dropped sharply just after installation. Compared with the gas temperature of the carbonization chamber in the middle stage of coking, the temperature of the newly added gas is actually not higher. Everyone knows that temperature is a function of pressure. As pressure increases, temperature will inevitably rise. Therefore, the pressure in the gas collecting pipe rises after just loading coal. As for this phenomenon being more obvious when the distance from the sampling point is closer, I think everyone can understand it!