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What role does the condensing evaporator play in the air separation?

What role does the condensing evaporator play in the air separation?
Nov 14, 2023
Author: DEAR AST
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There must be rising steam and downstream liquid during the rectification process. Condensation evaporator is the bond connecting the upper and lower towers, which is used for the heat exchange between liquid oxygen and gas nitrogen. Liquid oxygen comes from the bottom of the upper tower, and absorbs heat in the condensing evaporator (the latent heat released by the condensation of gas and nitrogen) and evaporates into gas and oxygen, part of which is sent out as the product gas and oxygen, while most (70%~80%) supply the upper tower as the rising steam for rectification. The gas nitrogen comes from the upper part of the lower tower, which releases heat in the condensing evaporator and condenses into liquid nitrogen, and supplies the upper tower and the lower tower as recirculation fluid to participate in the rectification process. Therefore, condensation evaporator is an essential and important heat exchange equipment in the rectification system. The quality of its work is related to the wholeAir separation equipmentPower consumption and normal production, so the condensation evaporator should be properly operated and maintained.

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