Molecular sieve particles and the medium is the method by physical adsorption,molecular sieve particles and the medium between the adsorbent is zeolite molecular sieve. The major components of air is nitrogen, oxygen and other rare gases,molecular sieve particles and the medium between their molecular polarity of each are not identical,molecular sieves drying the nitrogen polar oxygen polarity to. Zeolite is a kind of polar adsorbent,under isothermal conditions, when the adsorption pressure increases, molecular sievenitrogen equilibrium adsorption amount of particles and the medium is much more than oxygen; when the adsorption pressure, the equilibrium adsorption of nitrogenamount less than oxygen. The properties of zeolite molecular sieve using, molecular sieve drying can be used for producing oxygen pressure adsorption, desorption cycle operation of decompression. Molecular sieve desiccant PSA oxygen machine in thevent, because the pressure is low,molecular sieve design zeolite molecular sieve can not be completelydesorbed and regenerated, so need to vent at the vacuum pump, forced vacuum. The existing technology, vent is directly connected with the vacuum pump vacuum pump,large load, working cycle longer, the vacuum pump is easy to damage, short service life.
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