Carbon Molecular Sieve

Applications of it

Advantages of it

Another variant from the Carbon adsorbents is the Carbon Molecular Sieve or CMS as it is called in popular parlance. Carbon Molecular Sieve are micro porous materials which have the power to discriminate between the absorbing molecules. They do it on the basis of shape and size. Thus they are used in gas separation processes very effectively.

The method of Carbon Molecular Sieve production starts with the selection or preparation of a carbonic material. This is followed by reduction of its pore size. This is done by the process of hydrocarbon thermal decomposition under the condition of inert atmosphere.

Accomplishment of this process is done with the carbonic base material obtained by carbonization of cellulose base raw material. It can be walnut and coconut shell processed in the inert atmosphere. The porous carbon thus produced was then mixed with coal tar pitch and a suitable binder. It was then extruded to a typical cylindrical shape. In the end, this material is heated in inert atmosphere.

Application of Carbon Molecular Sieve in PSA process:
CMS or Carbon Molecular Sieve produced thus is very suitable for nitrogen separation from air. The process is found to have higher performance in comparison to similar commercial ones.

Nitrogen production through PSA process using CMS as adsorbent gives the following advantages:

• Economical
• Wide range of Nitrogen purity and capacity