Overall control operations when the liquid oxygen pump is shut down
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During normal operation of the air separation unit, if both liquid oxygen pumps fail suddenly and can no longer function, the unit must continue to operate; it is not possible to shut it down. How should the overall control of air separation be operated?
It’s hard to specify the exact steps; I think the most important thing is to balance the cooling capacity
Coal chemical industry air separation operations: Prevent the expander from speeding up; reduce the pressure of high-pressure air in the compressor appropriately; close the high-pressure air throttle valve. . . Adjust the cooling capacity balance. .
Moderator, could you please explain it in more detail? Specific steps for operation. . .
Could you explain what function your two liquid oxygen pumps serve?
If the upper tower and the main cooler are separate. Then the liquid oxygen pump pumps the liquid from the upper column into the main cooler. In that case, both of your pumps are broken. Then there’s only parking.
Vent at the end of the booster, vent oxygen; reduce the throttle valve for high-pressure night mode, but don’t close it completely – keeping it open to about 5% is sufficient