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Relationship between the average temperature of liquid oxygen in an air separation plant and the main cooling liquid level

Relationship between the average temperature of liquid oxygen in an air separation plant and the main cooling liquid level
Mar 21, 2023
Author: DEAR AST

The average temperature of liquid oxygen is related to the level of the main cooler. The higher the level of liquid oxygen in the main cooler, the higher the pressure of liquid oxygen at the bottom of the main cooler, and the higher the evaporation temperature of liquid oxygen. Since liquid oxygen is in a saturated state, the average temperature of liquid oxygen will increase. At this time, if you want to maintain the main cooling temperature difference, you must correspondingly increase the lower tower pressure. Therefore, considering the design, the pressure on the liquid oxygen surface should not be too high. Generally, the height of small and medium-sized air separators is 0.4~0.5m, and the height of large air separators is 1.2~1.8m.

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