The actual application of molecular sieve particles and the medium

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.

The concept of molecular sieve adsorbent and the medium

Molecular sieve particles and medium size: not much difference between each other,can be effectively separated by molecular sieve oxygen generator VPSA.Researchers have tried to use vpsa oxygen generator from the content of nitrogenand methane mixture nitrogen decreased from 23% to 10% the following, molecular sieve particles with the medium and VPSA oxygen generator and the nitrogen and oxygen in the medium granular and molecular sieve separation of argon and oxygen,molecular sieve desiccant the experiment has been successful. It is believed that this technology will haveimportant commercial application prospect. VPSA oxygen generator hollow glassgeneral molecular sieve, with XH molecular sieve and VPSA oxygen generator canadsorb hollow glass of water and organic residues, with a molecular sieve and VPSA oxygen generator generator makes the hollow glass even at very low temperaturesremain clean and transparent, VPSA oxygen generator at the same time, particle andmedium energy the hollow glass bear tremendous variability from seasonal anddiurnal temperature strong internal and external pressure difference with molecular sieve molecular sieve drying, completely solve the ordinary insulating glass hollow glass desiccant is easy to expansion or contraction caused by distorted broken, sieve fully extend the using life of hollow glass molecular.

molecular sieve adsorbent application and sieves 4A molecules

Molecular sieve particles and the medium is a synthetic, molecular sieve aremicroporous aluminosilicate cubic lattice between particles and medium. On the basis of the crystal interior cavity size and adsorption or rejection of molecules of different substances, sieves 4A molecules, thus called "molecular sieve".Molecular sieve particles and the medium is less than the diameter of the aperture of molecular sieve crystal material can enter the crystal of the molecular sieve, molecular sieve adsorbent by adsorption, otherwise, sieves 4A molecular exclusion. Gas molecular sieve dehydration hydration according todifferent polarity molecules are molecular sieve adsorbent preferentially adsorbed order decision.molecular sieve natural gas dehydration select adsorption by molecular size and shape of different, de hydration is only adsorption are smaller than those of molecular sieve aperture molecular gas molecular sieve. Sieves 4A molecules for polarsmall molecules and unsaturated molecules, molecular sieve dehydration of natural gas hydrate production with the selective adsorption performance,sieves 4A molecular polarity is greater, increasing unsaturation, the selective adsorption is stronger. Zeolite molecular sieve which belongs to a kind ofmolecular sieve desiccant, and the structure of NaCl is very similar to natural gas hydrate, molecular sieve dehydration belongs to cubic. Molecular sieve drying the space network structure composed of silicon oxygen tetrahedronunit [SiO4] and tetrahedral [AlO4] units are staggered into. molecular sieves 4a and gasmolecular sieve dehydration of hydrated ion exchange properties, water softening function: natural gas molecular sieve dehydration every oxygen atomhydrated skeleton are two tetrahedral adjacent to the total, natural gasmolecular sieve dehydration hydration this structure form for Yang from thecrystal cave and water molecules occupy, natural gas molecular sieve dehydration hydration and these cations and water molecules have greatermobility, of cation exchange and reversible dehydration.

Molecular sieve desiccant

Molecular sieve desiccant a synthetic and water molecules have a strong adsorptive desiccant products. Grams of zeolite pore size through different process to control, in addition to the adsorption of water vapor, it can absorb other gases. At temperatures above 230 ℃, the water molecules still receiving very good.
molecular sieves drying desiccant a luminosilicate compound having a cubic lattice, the alumina is mainly composed of the open connection through an oxygen bridge skeleton structure with uniform pore diameter and many neat structure, the large surface area of the inner hole. Low price and also contains a large ionic radius of metal ions and the chemical form of water. As water molecules in the continuous loss of heat, but the same crystal framework structure, the formation of many of the same size of the cavity, the cavity of the same diameter, there are many pores are connected, the diameter of these small pores of uniform size, pore ratio can adsorption to the small diameter of the internal cavity, the ratio of the bore and the exclusion of a large molecule, which can form different molecular diameters, different levels of polar molecules, molecules sieve desiccant having different boiling points and different molecular separation degree of saturation open, that has the effect of "screening" of molecules, so called molecular sieve natural gas dehydration. Currently zeolites are widely used in metallurgy, chemical industry, electronics, petrochemical and natural gas industries.

Molecular sieve adsorption principle

Molecular sieve adsorption the gaseous and a liquid substance (adsorbate) immobilized on a solid surface (adsorbent) physical phenomena, the solid (adsorbent) to a large number of micropores having an active surface, the molecules are adsorbed by the surface of the adsorbent mass gravity the effect thus fixed thereto. Depends on the size of gravity: the adsorbent surface structure (pore rate; partial pressure of adsorbate; temperature.
With the adsorption heat is a reversible phenomenon. Similar to the condensation: If you increase the pressure. molecular sieve adsorbent adsorption capacity increases; lowering the temperature, increase the adsorption capacity. Therefore, when the adsorption pressure is raised to make the maximum temperature to a minimum. Desorption, the pressure is reduced to make the minimum, the maximum temperature rise.
The adsorption phase: CO2 absorption by the effect of aluminum oxide is poor, so it is mainly used for adsorbing H2O, and the 13x zeolite molecular sieves is located in the subsequent drying process air containing CO2.
Zeolite has a strong water absorption, therefore, during the adsorption and regeneration will not allow contact of the Molecular sieve adsorption reduces the moisture adsorption capacity of CO2. If an accident happens so that water into a sieve, only special high-temperature regeneration will be able to restore the original adsorption performance.