What’s the situation when there is a leak of liquid oxygen while driving the plant, with no liquid flowing down from the tower but liquid appearing first in the tower?
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A leak occurred at the site after the major maintenance was completed; analyses showed an oxygen content of over 80%. The liquid oxygen transfer pump made distinct noises, and it’s unclear whether this was due to cracked pipes or the sound of liquid oxygen freezing and cracking when it dropped onto the bottom of the cryogenic tank. There is a significant leak in the purge gas discharge pipes at the inlet and outlet of the liquid oxygen circulation pump, and frosting occurs in the discharge pipe of the liquid oxygen transfer pump. However, no liquid accumulation occurred when either the upper or lower column was leaking. The upper column experienced a false liquid level, which suddenly rose to 130 before dropping back to 0. There are also operational issues; when liquid is formed at the bottom of the tower, the operators reduce the flow rate of the booster pump as well as the flow rate entering the tower. If a leak occurs during liquid formation in the upper column, then there should be liquid level in the lower column. If it is the lower column that leaks, then the oxygen content in the vapor from that column will not be so high, and it will not appear at the oxygen pump either. Please ask the experts to help analyze the problem
The key to your problem is to resolve the liquid oxygen leakage issue as soon as possible. Liquid oxygen pumps have separate compartments that should be cleaned immediately, and leaks should be located and repaired. This is very important in terms of security! It must be implemented immediately! ! Everything revolves around identifying the leak as the top priority; everything else must be put on hold for now. If this isn’t addressed promptly, serious accidents can occur in severe cases.
Thank you for the suggestion. We started removing the sand yesterday; there’s about 4,000 cubic meters to be removed, and it should take around three weeks
Leakage inside the air separation cryogenic tank after 719 – no one dares to take it lightly~
Yes, stop immediately and empty it to allow the temperature to rise
The original poster needs to restate the question; there are many unclear points. Where does 80% oxygen content come from? According to what you said, at the beginning of operation there is no liquid in the tower, let alone a distillation process; therefore the oxygen purity is too high. What type of air separation unit is your device? According to what you’ve described, there are no issues with frosting occurring in the drain lines, or with frosting forming in the pipelines during the cold tower liquid accumulation process