Carbon molecular sieve is a new type of adsorbent developed in the 1970s. It is an excellent non-polar carbon material with a main component of elemental carbon and a black columnar solid appearance. It contains a large number of micropores with a diameter of 4 Angstroms. These micropores have a strong instantaneous affinity for oxygen molecules and can be used to separate oxygen and nitrogen in the air.

In industry, carbon molecular sieves often use pressure swing adsorption devices (PSAs) to produce nitrogen. It has the advantages of large nitrogen production, high nitrogen recovery rate, and long service life. It is suitable for various types of pressure-switching nitrogen adsorption generators. The raw materials for preparing carbon molecular sieve include coconut shells, coal and resin, and are made through processing and powdering, molding, carbonization, activation, and pore adjustment.

Carbon molecular sieve is widely used in many fields. In the chemical industry, it is used to separate and purify nitrogen to meet the chemical industry's demand for high-purity nitrogen; in the petroleum and natural gas industry, it is used to purify, store and transport natural gas; in the electronic industry, it is used to manufacture high-purity nitrogen to protect electronic components from oxidation; in the food industry, it is used to preserve food freshness and packaging to prevent food oxidation and deterioration; in the pharmaceutical industry, it is used to produce and store drugs to ensure the purity and stability of drugs. With the continuous development of technology, the performance of carbon molecular sieves will continue to improve and their application prospects will be broader.