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CARBON MOLECULAR SIEVE (CMS) is a special class of activated carbons with not always strictly discrete pore size. Carbon molecular sieve is a non-quantitative compound, and its important properties are based on its microporous structure. Its ability to separate air depends on the different diffusion speeds of various gases in the air in the pores of the carbon molecular sieve, or different adsorption forces, or both effects work simultaneously. 

Under equilibrium conditions, the adsorption capacity of carbon molecular sieve for oxygen and nitrogen is quite close, but the diffusion rate of oxygen molecules through the narrow gaps of the carbon molecular sieve microporous system is much faster than that of nitrogen molecules. Carbon molecular sieve air separation nitrogen production is based on this Performance, before the time to reach equilibrium conditions, the nitrogen is separated from the air through the PSA process.


CARBON MOLECULAR SIEVE is mainly used to separate air and enrich nitrogen. Compared with the traditional cryogenic air separation at high pressure nitrogen production process, it has the advantages of lower investment cost, faster nitrogen production speed. Therefore, it is the preferred pressure swing adsorption (PSA) nitrogen enrichment adsorbent for air separation in the engineering industry. The nitrogen is widely used in chemical industry, oil and gas industry, electronics industry, food industry, coal industry, pharmaceutical industry, cable industry, and metal heat treatment. It is also extensively used in transportation and storage areas.



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