Process flow and function of PSA nitrogen generator
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- Time of issue:2022-12-16 15:37
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(Summary description)The separation effect of molecular sieves on oxygen and nitrogen is mainly based on the difference in the diffusion rate of these two gases on the surface of molecular sieves.
Process flow and function of PSA nitrogen generator
(Summary description)The separation effect of molecular sieves on oxygen and nitrogen is mainly based on the difference in the diffusion rate of these two gases on the surface of molecular sieves.
- Categories:Industry News
- Author:
- Origin:
- Time of issue:2022-12-16 15:37
- Views:
Carbon molecular sieves and zeolite molecular sieves are widely used in the fields of nitrogen and oxygen production. The separation effect of molecular sieves on oxygen and nitrogen is mainly based on the difference in the diffusion rate of these two gases on the surface of molecular sieves. Carbon molecular sieve is a carbon-based adsorbent with some characteristics of activated carbon and molecular sieves. Carbon molecular sieves are composed of very small micropores, and the pore size distribution is between 0.3nm and 1nm. Gas (oxygen) with smaller diameter diffuses faster and enters the solid phase of molecular sieve more, so that nitrogen-enriched components can be obtained in the gas phase. After a period of time, the adsorption of oxygen by the molecular sieve reaches a balance.
According to the different characteristics of the adsorption amount of the adsorbed gas by the carbon molecular sieve under different pressures, the pressure is lowered so that the carbon molecular sieve can release the adsorption of oxygen. This process is called regeneration. The pressure swing adsorption method usually uses two towers connected in parallel to alternately perform pressure adsorption and decompression regeneration to obtain a continuous nitrogen flow.
Using air as raw material, using carbon molecular sieve as adsorbent, using the principle of pressure swing adsorption, using carbon molecular sieve to selectively adsorb oxygen and nitrogen to separate nitrogen and oxygen, is commonly known as PSA nitrogen production.
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