We are the director unit of machinery industry seperating gas device for the science and technology information network pressure swing subnetwork which develops carbon material and has outstanding talents and technical support from institutions who have long-term specialized in developing carbon molecular sieve in domestic. The preparing technology of space-division system nitrogen for special-purpose carbon molecular sieve (once won second prize of National Educational Committee advance in technology) achieves international advanced level and has been widely applied in the domestic large and middle scale nitrogen profession and sold to Asian, US and European countries.The quality and scale of carbon molecular sieve are among the best in the domestic profession.Zhongtai carbon molecular sieve with first-class brand and the service to you and new old users of nitrogen profession. It is nonpolar adsorbents to adsorbs oxygen in the air under the normal temperature and variable pressure, obtaining high purity nitrogen by (PSA) technical process.
1,Types
ZTCMS-120
ZTCMS-140 ZTCMS-160 ZTCMS-185 ZTCMS-200
ZTCMS-220
2,Principle of carbon molecular sieve making nitrogen
It is carbon absorbent which composed of porous mass and hole structural for disorderly stack carbon. The carbon molecular sieve is non measurement compound with its important nature which based on its cellular structure. The separating the air ability of separating the air decided by propagation rate, adsorptive attraction or the same effect. Carbon molecular sieve adsorption to oxygen and the nitrogen is similiar under the equilibrium condition, but oxygen is quicker than nitrogen at narrow crevice's propagation. Bases on this performance, nitrogen separating from the air through the PSA technical process.
3,Installment of carbon molecular sieve making nitrogen
The equipment is called nitrogen machine. Adopts pressure adsorption under the normal temperature (i.e. P.S.A) which is he non-heat source fractionation. When pressure producing desorption, hypotensive exhaust, the carbon molecular sieve regenerating (oxygen). At the same time, the bed gas gathers nitrogen become the product when passing through the bed level to cycle.
The psa process process includes: Pressurized, gas production; pressure balancing; hypotensive, exhaust; then repressurized, gas production; ......several working stages. It divides into vacuum regeneration and atmospheric pressure regeneration according to regenerating method.
P.S. nitrogen machine includes air compression purification system, psa system, valve programmed control system(vacuum regeneration attaches vacuum pump) and nitrogen supply system according to user's need.
4,Condition of carbon molecular sieve making nitrogen
1、Air compression and purification
It is very essential for pure raw material air entering into absorption column of carbon molecular sieve, because pellets and organic atmosphere will block up the carbon molecular sieve's pore entering the absorption column and reduce separation performance of carbon molecular sieve.
The method of pure raw material air includes: 1, Air inlet far away from oil mist, organic atmosphere place; 2, Carbon molecular sieve absorption column should be treated at last by cold dryer and absorbent purification system.
2、Nitrogen's density and gas production.
N 2 density and gas production according to user’s adjustment when making nitrogen. N2 density will enhance when lower the gas production, otherwise, N2 density will drop.
3、Pressure balancing time
Carbon molecular sieve making nitrogen process is when an absorption column adsorption ended, the compressed air in absorption column poued into another regenerate absorption column from two direction to make the same pressure. This process is called pressure balancing to choose suitable time, then restored energy, slow down the impact of molecular sieve in the absorption column to achieve service life. The reference switching speed is 1-3 seconds.
4、 Gas production time
Carbon molecular sieve proliferation speed is different to oxygen and nitrogen, adsorbing O 2 to balance in a short time, N2 adsorptive capacity is few, short time to produce gas which enhances the carbon molecular sieve to produce gas yield and increases valve frequency. Generally, the adsorption time is 30-120 seconds. The small high pure nitrogen machine uses short gas production time, the large-scale low concentration uses long gas production time.
5、Service pressure
Carbon molecular sieve has balanced adsorption effect while dynamics with high adsorbate partial pressure and loading capacity which is benefit to compressor adsorption. High adsorption pressure requests high compressor modelling, moreover atmospheric regeneration and vacuum regeneration have different requests to adsorbent pressure. Atmospheric regeneration elects 5-8kg/cm 2 for suitable and vacuum regeneration elects 3-5Kg/cm2.
6、Allowable temperature
Low adsorption temperature is good to carbon molecular sieve under the condition of making the nitrogen machine.
5,Package and usage
1、Testing strictly according to enterprise standard to guarantee the quality.
2、Plastic drum and good sealing package, open again when filling, against moisture.
3、Sealing and solid, do not pound it directly with stick.
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