The pressure difference of the Shell furnace at 65 is gradually increasing, but without any fluctuations
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We are Shell’s furnaces, and we have been in operation for the second year now. Recently, we noticed that the pressure difference at 65 is gradually increasing, though it remains stable; there are no issues with the slag either. We would like to know what could be causing this.
It should be related to nitrogen purging of the instruments, as we haven’t paid attention to this aspect on site
There is condensate; simply drain it, and it can be modified to be installed at a higher location
It was already said on the fourth floor to have the instrumentation team take a look. (I happened to see this post tonight; the forum is under maintenance, so posts cannot be submitted.) ）
Yes, it was later found that there are generally two reasons: 1. Scheduling； 2. Increase in the ash content of coal powder
There isn’t enough purge gas, resulting in liquid or dust accumulation inside the pressure guide tube. The interlock can be removed online, the pressure guide tube can be cleaned thoroughly, and the purging gas flow rate should be increased appropriately when it is put back into use.