Can the use of methal equipment to achieve the purpose of air separation?

Air contains a variety of gases. Ordinary methods are difficult to analyze all components, but if cryogenic and distillation techniques are used, the results are completely different. At present, the cryogenic method used in air separation is so realized. Compared with membrane separation and pressure swing adsorption, the advantages are more obvious.

The membrane separation method of methal equipment uses the osmososososososososososososselectivity of some organic collection membranes to separate the double or multicomponent components through the membrane rate under the action of a certain driving force. Although the equipment is simple and fast, the purity of the product is low and the separation ability is limited, but the pressure swing adsorption method uses molecular sieve to selectively adsorb different molecules, and then separate oxygen or nitrogen in the air, but the final product purity is not ideal.

The cryogenic cryogenic method is different. It uses oxygen and nitrogen boiling point difference to achieve oxygen and nitrogen separation. In the high pressure and low temperature environment, the methal equipment liquefy the air and can effectively separate the oxygen and nitrogen components in the liquid air after the heat transfer and heat transfer in the distillation column. This is a widely used method not only for its high purity, but also for producing high purity oxygen, high purity nitrogen and rare gas.