Reasons for low pressure in the refined argon tower
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When charging argon into the tower, the pressure on the argon side fails to rise. It’s only 4 kPa, much lower than usual; the venting is completely shut off. Everything else is within the specified range.
Is the load on the refined argon column insufficient? If there isn’t enough material for distillation in the refined argon column, its pressure won’t increase
It is caused by a high load on the condenser. Just lower the liquid level in the condenser or increase the pressure
1. Check whether the liquid seal from the crude argon condenser to the refined argon column is damaged. 2. Verify whether the opening degree of the nitrogen valve at the evaporator is correct. (This is my personal opinion, for reference only.)
1 High condenser load, high liquid level, large opening of the evaporator gas valve. 2 Low amount of crude argon entering. 3 Low thermal load of the evaporator. 4 Problem with the pressure gauge. 5 Problem with the nitrogen discharge valve