制氮機碳分子篩是(shi)20世紀七(qi)十年代發展起來的(de)一種新型吸附劑，是(shi)一種優良的(de)非極性碳(tan)素材料，制氮(dan)(dan)碳(tan)分(fen)子篩(CMS)用(yong)于(yu)分(fen)離(li)空氣富(fu)集氮(dan)(dan)氣采用(yong)常溫低(di)壓(ya)制氮(dan)(dan)工藝(yi)，比傳統(tong)的(de)深冷高壓(ya)制氮(dan)(dan)工藝(yi)具有投資費用(yong)少(shao)，產氮(dan)(dan)速度快,氮(dan)(dan)氣成本低(di)等優點。因此，它是(shi)目(mu)前(qian)工程界(jie)先選的變壓吸(xi)附(簡稱P.S.A)空(kong)分富氮吸(xi)附劑，這種氮氣(qi)在(zai)化學工(gong)(gong)業、石油天然(ran)氣(qi)工(gong)(gong)業、電子工(gong)(gong)業、食品(pin)工(gong)(gong)業、煤碳工(gong)(gong)業、醫藥工(gong)(gong)業、電纜行(xing)業、金屬熱處理、運輸(shu)及(ji)儲存(cun)等(deng)方面廣泛應用。

制氮機碳分子篩(CMS)分(fen)(fen)離空(kong)氣(qi)(qi)(qi)(qi)的能力，取決于(yu)(yu)(yu)空(kong)氣(qi)(qi)(qi)(qi)中(zhong)氧氣(qi)(qi)(qi)(qi)和(he)氮(dan)(dan)(dan)氣(qi)(qi)(qi)(qi)在(zai)(zai)碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)微孔(kong)中(zhong)的不同擴散(san)速(su)度(du)，在(zai)(zai)吸(xi)附平(ping)衡條(tiao)(tiao)件(jian)下，碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)對于(yu)(yu)(yu)氧和(he)氮(dan)(dan)(dan)的吸(xi)附量相(xiang)當(dang)接近，但在(zai)(zai)吸(xi)附動力學條(tiao)(tiao)件(jian)下，氧氣(qi)(qi)(qi)(qi)分(fen)(fen)子(zi)(zi)(zi)通過碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)微孔(kong)的擴散(san)速(su)度(du)比氮(dan)(dan)(dan)分(fen)(fen)子(zi)(zi)(zi)快(kuai)得多，碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)空(kong)分(fen)(fen)富(fu)氮(dan)(dan)(dan)就(jiu)是(shi)基于(yu)(yu)(yu)碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)的這一性(xing)能，在(zai)(zai)遠離平(ping)衡條(tiao)(tiao)件(jian)的短時間內，氧氣(qi)(qi)(qi)(qi)分(fen)(fen)子(zi)(zi)(zi)吸(xi)附于(yu)(yu)(yu)碳(tan)(tan)分(fen)(fen)子(zi)(zi)(zi)篩(shai)(shai)固相(xiang)，而氮(dan)(dan)(dan)分(fen)(fen)子(zi)(zi)(zi)在(zai)(zai)氣(qi)(qi)(qi)(qi)相(xiang)中(zhong)得到富(fu)集，通過PSA工藝流程使(shi)氮(dan)(dan)(dan)氣(qi)(qi)(qi)(qi)從空(kong)氣(qi)(qi)(qi)(qi)中(zhong)分(fen)(fen)離出來。