Carbon molecular sieve is a new type of adsorbent developed in the 1970s. It is an excellent non-polar carbon material. Carbon Molecular Sieves (CMS) is used to separate air enriched nitrogen. The low-pressing nitrogen process has the advantages of less investment cost, faster nitrogen production rate and lower nitrogen cost than the conventional cryogenic high-pressure nitrogen production process. Therefore, it is the preferred pressure swing adsorption (PSA) air separation nitrogen-rich adsorbent in the engineering field. This nitrogen is used in the chemical industry, oil and gas industry, electronics industry, food industry, coal industry, pharmaceutical industry, cable industry, metal. Widely used in heat treatment, transportation and storage.
Carbon molecular sieve working principle
PFN type pressure swing adsorption nitrogen equipment adopts high-quality molecular sieve carbon molecular sieve (Carbon molecular sieve) as adsorbent, and uses the principle of pressure swing adsorption to obtain nitrogen directly from compressed air. Under a certain pressure, due to the kinetic effect, the diffusion rates of oxygen and nitrogen on the carbon molecular sieve are quite different. In a short time, the oxygen molecules are adsorbed by the carbon molecular sieve in a large amount, and the nitrogen molecules are enriched in the gas phase to achieve oxygen-nitrogen separation.
Since the adsorption capacity of carbon molecular sieve for oxygen varies greatly with pressure, the pressure of the carbon molecule can be desorbed by desorbing the oxygen molecules adsorbed by the carbon molecular sieve, and the carbon molecular sieve can be regenerated, and the high-quality nitrogen can be continuously produced.
Carbon molecular sieve technology features
Perfect process technology, optimal use effect. The carbon fiber sieve has reasonable internal components and the airflow is evenly distributed to reduce the high-speed impact of the airflow. Some molecular sieve protection measures extend the service life of carbon molecular sieves. It is easy to operate, stable in operation, high in automation, and can be operated unattended. Automatic interlocking nitrogen venting device to ensure product nitrogen quality. Optional nitrogen device flow, purity automatic adjustment system, remote monitoring system, etc.