Carbon Molecular sieve (CMS) is a new style non-polarity sorbent that can adsorb oxygen molecule under normal temperature and rich nitrogen gas be gotten as a result. Its separation capacity rests with different diffusing speed of all kinds of gases in air, or different adsorbability, or the contemporary work of these two.
Carbon molecular sieve is widely applied in petroleum chemical industry, metal heat treating, electron production, keep-fresh of foodstuff, etc.
Index Of Carbon Molecular Sieve:
1. Grain Diameter: 2.0mm|1. 5mm
2. Adsorption Periods: 2*60 S
3. Pile Proportion: 630~650 g/l
4. Bearing Strength: >=100N/grain
A. The Principle of producing nitrogen by CMS
A carbon molecular sieve belongs to the kind of carbon sorbent and it is the carbon skeletal framework, which is a disordered accumulation of carbon. The capability of air separating is based on its skeletal framework. In dynamics, CMS has different adsorptive rate for oxygen and nitrogen. Under balanced condition, the adsorption by CMS towards O2 and N2 is very close, however, the speed O2 molecule passing through the framework is faster than N2 molecule, this principle is the bases of CMS N2 generation. Before the adsorption, oxygen and other impurities are adsorbed by the CMS, allowing unabsorbed nitrogen to pass through the bed.
B. Nitrogen generator by CMS
This apparatus is often called Air Separation Nitrogen Plants. The process uses the principle of Pressure Swing Adsorption(PSA). Pressure-swing adsorption nitrogen-making is realized through the features that CMS has, of selective adsorption and the difference adsorption capacity under different pressure. Oxygen molecular are withheld by carbon molecular sieves because its spreading speed is much quicker than nitrogen molecular in the carbon molecular sieves’ minute hole structure when the pressure is raising, while the adsorption to nitrogen molecular are relieved by the oxygen gas. It makes carbon molecular sieves regenerate, forms circulatory operation, and realizes nitrogen-making continuously.
The PSA process includes; Pressure adding, Nitrogen producing, Pressure balancing; Pressure reducing, Nitrogen releasing; Then repeat these procedures again, …And the circulation process was formed by these procedures. According to the style of regeneration, the process can be concluded into regeneration in vacuum process (VPSA)and regeneration in normal pressure process.
According to the demands of clients, the Nitrogen generation plant based on the PSA-process can consist into; The air pressing and purifying system, pressure swing and adsorption system, programmable valve controller system(the VPSA process even in need of the vacuum pump), and Nitrogen supply system.
Service content:
Our products and service have following strongpoint:
Good cost-performance rate: Can reduce consumer’s investment and operate cost;
Great rigidity, little ash, equal grain: Can effectively resist airflow, service life;
Stable quality: Strictly test according to enterprise standard, and execute two layers of checkout during producing and leaving factory;
Resin model can be used to produce high purity nitrogen: Can substitute imported products of the same type;
The high temperature regeneration of Carbon molecular sieve, the capability of which is descendent;
Rich Air Separation Co., Ltd.
Chemicals / Chemical Auxiliary and Catalyst / Desiccant and Sorbent
Rich Air Separation Co., Ltd.
Chemicals / Chemical Auxiliary and Catalyst / Desiccant and Sorbent