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Heat transfer temperature difference for main cooling in small air separation unit

Heat transfer temperature difference for main cooling in small air separation unit
Feb 23, 2022
Author: DEAR AST

In the condensation evaporator the liquid oxygen is heated to evaporate and the gas nitrogen is cooled and condensed. Both the liquid oxygen and the gas nitrogen are in a saturated state. If the saturation temperature of nitrogen is lower than the saturation temperature of oxygen at the same pressure, the purpose of condensing gas and nitrogen with liquid oxygen cannot be achieved. For this reason the heat transfer temperature difference in the condensing evaporator in small air separation unitmust be established by the pressure difference. Raising the pressure in the lower tower to increase the saturation temperature of the nitrogen is the only way to achieve a suitable heat transfer temperature difference between the liquid oxygen and the gas nitrogen and to achieve the purpose of condensing the gas nitrogen with liquid oxygen in small air separation unit.

For a long time, Dear Air Separation has been adhering to the principle of contract compliance and trustworthiness, and has achieved fruitful results over the years, has a number of loyal customer groups, and has won a good reputation in the air separation industry.

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