PSA Nitrogen / High Purity Nitrogen / Nitrogen repair / air separation plant nitrogen / Suzhou ..

PSA (Pressure Swing Adsorption, called PSA) is a new gas separation technology, has been developing rapidly in the early 1970s in a foreign country since the late 1960s, the principle is the use of molecular sieve for different gas molecules "absorption" properties differences to separate the gas mixture, which is based on the air as a raw material, using a high-performance, high selectivity of solid adsorbent selective for nitrogen and oxygen of the performance of the adsorption of nitrogen and oxygen in the air is separated. Currently used within the nitrogen, oxygen areas more carbon molecular sieve and zeolite molecular sieves. Separation of molecular sieve oxygen and nitrogen is mainly based on two gas diffusion rate in different zeolite surface, activated carbon and carbon molecular sieve is a molecular sieve certain characteristics of both the carbon-based adsorbent. Carbon molecular sieve composition having small micropores, pore size distribution in between 0.3nm ~ 1nm. Smaller diameter gas (oxygen) the proliferation of faster, more solid molecular sieve, so you can get the enriched gas phase composition of nitrogen. After some time, the molecular sieve adsorption of oxygen balance, based on the carbon molecular sieve adsorption capacity under different pressure gas adsorption different characteristics, reducing the pressure of the carbon molecular sieve adsorption of oxygen lift, a process called regeneration. PSA typically use two towers in parallel, alternating pressure adsorption and regeneration decompression to obtain a continuous flow of nitrogen. It is based on the air as the raw material, the use of a high-performance, high solid adsorbent selective choice of the performance of the adsorption of nitrogen and oxygen in the air to separate nitrogen and oxygen. Carbon molecular sieve separation of nitrogen and oxygen gases is mainly based on two different diffusion rate of carbon in the surface of the molecular sieve, the smaller the diameter of gas (oxygen) diffusion faster, more solid phase into the zeolite. Such gas phase composition can be enriched nitrogen. After some time, the molecular sieve adsorption of oxygen balance, based on the carbon molecular sieve adsorption capacity under different pressure gas adsorption different characteristics, reducing the pressure of the carbon molecular sieve adsorption of oxygen lift, a process called regeneration. PSA typically use two towers in parallel, alternating pressure adsorption and regeneration decompression to obtain a continuous flow of nitrogen.