The main component of carbon molecular sieve is elemental carbon, and its appearance is black columnar solid. Because it contains a large number of micropores with a diameter of 4 angstroms, the micropores have a strong instantaneous affinity for oxygen molecules and can be used to separate oxygen and nitrogen in the air. Industrially, pressure swing adsorption (PSA) is used to produce nitrogen. The carbon molecular sieve nitrogen generator has large amount of nitrogen, high nitrogen recovery rate, and long service life. It is suitable for various types of pressure swing adsorption nitrogen generators and is the first choice for pressure swing adsorption nitrogen generators.
The raw materials of carbon molecular sieve are coconut shell, coal, resin, etc. The first step is to process and pulverize, and then knead with the base material. The base material is mainly a material that increases strength and prevents crushing and powdering; the second step is activation The holes are fed with an activator at a temperature of 600-1000°C. Commonly used activators include water vapor, carbon dioxide, oxygen and their mixtures. They react thermochemically with more active amorphous carbon atoms to expand the specific surface area and gradually form pores to activate the pore-forming time from 10 to 60 minutes; the third step is to adjust the pore structure, using the vapor of chemical substances: such as benzene on carbon The molecular sieve microporous wall is deposited to adjust the size of the pores to meet the requirements.
