Can water be discharged from the N3 pipeline network in low-temperature methanol washing?
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Can water be discharged from the N3 pipeline network in low-temperature methanol washing? What caused it?
Stop scheduling and check the issues with the nitrogen pipeline network, as well as whether there are any problems with other processes.
What is the pressure of the nitrogen for you? Check all pipes that come into contact with nitrogen and water
The reason has been identified: the washed demineralized water has flowed back into the poor methanol tank via the N3 pipeline network
According to what you say, it seems that after the air separation unit was shut down, the low-temperature methanol wash unit continued to operate. This was caused by high liquid levels. Is there nothing wrong with your air separation unit? Did the heat exchangers not get frozen?
The V4 desalination water pipeline should be equipped with blind flanges during normal operation; how could it backflow into the N2 pipeline network?