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The working principle of PSA nitrogen making equipment

Release time: 2022-09-01

Today, the editor intends to chat with you about the working principles of PSA nitrogen production equipment?

Pressure swing adsorption (referred to as PSA) nitrogen production equipment is a new type of air separation equipment developed abroad in the early 1970s. The equipment uses compressed air as raw material and carbon molecular sieve as adsorbent. It uses different dispersion rates of oxygen and nitrogen in the air in the carbon molecular sieve. The pressure inversion method is used to separate oxygen and nitrogen in the air, and the purity of nitrogen is equal to The gas volume can be planned according to the user's application needs.

PSA nitrogen generator refers to a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen to obtain nitrogen. According to the principle of pressure swing adsorption, high-quality carbon molecular sieve is selected as the adsorbent. Under a certain pressure , the nitrogen generator produces nitrogen from the air. The purified and dry compressed air is subjected to pressure adsorption and decompression desorption in the adsorber. Because of the aerodynamic effect, the dispersion rate of oxygen in the micropores of carbon molecular sieve is much higher than that of nitrogen, oxygen is preferentially adsorbed by carbon molecular sieve, and nitrogen is in the gas phase. It is enriched to form the product nitrogen.

Then the nitrogen generator is decompressed to normal pressure, and the adsorbent desorbs the adsorbed oxygen and other impurities to complete the regeneration. Usually two adsorption towers are set up in the system, one tower absorbs nitrogen and the other tower desorbs and regenerates. The opening and closing of the pneumatic valve is controlled by the PLC program controller, so that the two towers are replaced and circulated, so as to complete the continuous production of high-quality nitrogen. . So in the end, everyone should be able to understand that the overall composition of the nitrogen generator is not only the purification components, but also the air storage tank, nitrogen purification equipment, nitrogen buffer tank and other parts.

Suzhou Hengda Purification Equipment Co., Ltd. is a professional manufacturer of PSA nitrogen generator, oxygen generator, industrial oxygen generator, ammonia decomposition hydrogen production, ammonia decomposition furnace, nitrogen generator, 13X molecular sieve, UOP molecular sieve, 5A molecular sieve, carbon molecular sieve, A joint-stock high-tech enterprise with equipment such as hydrogen and nitrogen ratio.


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