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Abnormal process gas pressure in the Claus furnace waste heat boiler

2021-01-24View Original

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Both the furnace pressure in the waste heat Claus furnace and the process gas pressure in the waste heat boiler are high, but the process gas pressures in the subsequent equipment are all low; it seems that there might be an obstruction somewhere between the waste heat boiler and the first-stage reactor. In the hot standby condition, the furnace pressure is 14 kPa, the waste heat boiler pressure is 16 kPa, and the pressure after the first stage of the reactor is 0.2 kPa. If it’s blocked, how do I clean it? I tried increasing the air volume and closing the exhaust valve to clear out the interior; the pressure did decrease a bit, but not by much

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