Can the shielding gas in the air separation cold box be discontinued once the air separation unit is operating normally?
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Can the shielding gas in the air separation cold box be discontinued once the air separation unit is operating normally?
If any fellow sea traveler knows, please reply: Q:L
Are you referring to the seal gas for the cold box?
I guess so; what I’m doing here is inflating the cold box
After the air separation unit is started, gas should continue to be supplied to the cold box, and it is essential to maintain a slight positive pressure in the cold box. If this is not taken into account, freezing will occur inside the tower, which may bend or break the pipes.
Yes, it’s best to keep it on all the time to prevent the temperature inside the cabinet from dropping too low, which could create a vacuum that allows humid air to enter and cause water to freeze inside. Secondly, prevent minor leaks inside, which could cause gas to accumulate within the cabinet.
If possible, it is advisable to maintain a slight positive pressure of around 200 Pa in the cryogenic tank at normal and low temperatures. Of course, if there is a genuine shortage of gas supply, this system can be turned off while the tank is at normal temperature; it should be activated again a few days before operation begins~~
This can’t be stopped; it needs to keep being fed in. If moist air gets in, things will go out of control.
Thank you all:handshake