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PSA Nitrogen Generator

time2011/08/08

   PSA Nitrogen Generator

    PSA full name: Pressure Swing Adsorption, in Chinese means: PSA.
   
PSA is a new gas separation technology, since the late 1960s early 1970s in foreign countries has been rapid development, the principle is the use of molecular sieves of different gas molecules "adsorbed" performance differences separate the gas mixture, which is based on air as raw material, using a high-performance, choose the solid adsorbent selective for nitrogen and oxygen adsorption properties of the air nitrogen and oxygen separation.
   
Process Overview
    Present in nitrogen, oxygen is used frequently in the field of carbon molecular sieve and zeolite. Molecular sieve separation of the role of oxygen and nitrogen is mainly based on the two gas diffusion rate in the surface of different zeolites, carbon molecular sieve is a certain characteristics of both carbon and carbon-based molecular sieve adsorbent. Composed of carbon molecular sieve with very small pores, pore size distribution between the 0.3nm ~ 1nm. Smaller diameter of the gas (oxygen) spread faster, more into the zeolite phase, so you can get gas in the nitrogen-rich ingredients. After some time, molecular sieve adsorption of oxygen balance, according to the carbon molecular sieve adsorption at different pressures on gas adsorption characteristics of different, lower pressure to remove carbon molecular sieve adsorption of oxygen, a process called regeneration. PSA is commonly used in parallel the two towers, alternating pressure adsorption and regeneration extract to obtain a continuous nitrogen flow.

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