Carbon molecular sieves are a kind of new adsorbent, It’s an excellent non-polar carbon material. Carbon molecular sieve (CMS) is used to separate air and enrich the nitrogen gas, it adopts the room temperature low-pressure nitrogen production process, which has the advantages of less investment cost, fast nitrogen production speed and lower nitrogen cost than the traditional cryogenic high-pressure nitrogen production process. Therefore, it is the preferred pressure swing adsorption (PSA) air separation nitrogen-rich gas adsorbent, and it’s widely used in the chemical industry, petroleum and gas industry, electronics industry, food industry, coal industry, pharmaceutical industry, cable industry and metal heat treatment industries.