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How is the ratio of individual gases adjusted in an air separation plant?

How is the ratio of individual gases adjusted in an air separation plant?
Nov 20, 2024
Author: DEAR AST

Air separation equipment is a kind of equipment capable of separating oxygen, nitrogen and other gases from air, which is widely used in many fields with different proportions of demand for oxygen and nitrogen. Air separation equipment mainly utilizes the different boiling points of the components in the air, and separates oxygen and nitrogen from the air through compression, cooling, liquefaction, distillation and other steps. The operating parameters of the equipment such as pressure, temperature and flow rate will affect the final gas ratio.
Adjusting pressure: By adjusting the inlet pressure or outlet pressure of the air separation equipment, the flow rate and distribution of the gas in the equipment can be changed, thus affecting the separation effect of the gas. Adjusting temperature: Temperature is one of the most important factors affecting gas separation. By adjusting the cooling temperature of the equipment and the temperature distribution of the distillation tower, the degree of liquefaction of the gas and the separation efficiency can be changed. Adjust the flow rate: by adjusting the air flow rate into the equipment or the product gas take out flow rate, you can change the gas concentration in the equipment and separation effect. Adjusting distillation tower operation: The distillation tower is one of the core parts of the air separation equipment. By adjusting the reflux ratio of the distillation tower, liquid surface height and plate pressure and other parameters, you can change the distribution of gas in the tower and separation efficiency.
In actual operation, it should be precisely controlled and adjusted according to specific needs and equipment conditions.

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