Carbon molecular sieve works

Carbon molecular sieve nitrogen equipment works: carbon molecular sieve nitrogen equipment (CMS-PSA) is a carbon molecular sieve (Carbon Molecular Sieving, abbreviated CMS) as adsorbent and air as raw material, the use of pressure swing adsorption principle of the separation of oxygen and nitrogen production of high pure nitrogen gas separation apparatus.
zeolite 3a molecular sieve for ethanol drying is based on coal as the main raw material selection, grinding, shaping, drying and activation, heat treatment and other processes from the surface is full and efficient non-polar microporous adsorbent. His ability to adsorb gas molecules of different molecular weights are different, and different kinetic diameter of the gas molecules are adsorbed in the hollow glass desiccant molecular sieve pore diffusion at different speeds.
Carbon molecular sieve oxygen and nitrogen co-adsorption exists, at the same adsorption pressure, oxygen, nitrogen adsorption equilibrium was no significant difference (Figure 3) Therefore, the mere change in pressure is difficult to achieve effective separation of oxygen and nitrogen.
The general nature of oxygen and nitrogen, although the difference is small, but its dynamics are different diameters: 3.5 angstroms oxygen, nitrogen is 3.7 angstroms. Although both small pore size than the carbon molecular sieve, but the rate of diffusion of oxygen molecules hundreds of times faster than nitrogen molecules. This is because the smaller the molecule, the faster its diffusion. 4, in a short time, because the rate of diffusion of oxygen molecules than nitrogen molecules, so the oxygen molecules preferentially occupy the center is a large number of molecular sieve dehydration, adsorption capacity after a few minutes to more than 90%, almost close to balance at a time when the amount of nitrogen adsorption of only about 5%. The use of oxygen, nitrogen adsorption difference within a short time of great features, the program controller at a specific time program between two identical adsorption tower fast switching, combined with pressurized oxygen adsorption and desorption of oxygen pressure swing The adsorption process separating oxygen from air. Oxygen-containing gas is discharged from the bottom of the column, nitrogen adsorption due to little or no adsorption in the gas phase and the product gas is enriched in the form of continuous output.