Kugwiritsa ntchito njira yoyeretsera sieve ya molekyulu mu gawo lolekanitsa mpweya

Mpweya woponderezedwa ndi compressor ya mpweya umagwiritsa ntchito alumina yapadera yolumikizidwa ndi adsorbent ndi sefa ya molekyulu kuti ichotse madzi, carbon dioxide, acetylene, ndi zina zotero. Monga sefa ya adsorbent, sefa ya molekyulu imatha kunyamula mpweya wina wambiri, ndipo imakhala ndi chizolowezi chodziwikiratu mu njira yolumikizira. Pamene mamolekyu ofanana kukula kwake akukulirakulira, ndi mamolekyu osakhuta omwe ali ndi kukula kwakukulu, ndi mamolekyu osakhuta omwe ali ndi kukula kwakukulu, ndi sefa ya molekyulu yomwe imakhudzidwa mosavuta. Imatenga makamaka H2O, CO2, C2, H2 ndi zina zonyansa za CnHm mumlengalenga; Kuphatikiza pa mphamvu ya adsorption ya sefa ya molekyulu yokhudzana ndi mtundu wa zinthu zolumikizidwa, komanso yokhudzana ndi kuchuluka kwa zinthu zolumikizidwa, ndi kutentha, kotero mpweya woponderezedwa usanalowe mu dongosolo loyeretsa komanso kudzera mu nsanja yozizira ya mpweya kuti uchepetse kutentha kwa mpweya musanalowe mu dongosolo loyeretsa, ndipo kuchuluka kwa madzi mumlengalenga kumakhudzana ndi kutentha, kutentha kutsika ndiko kutsika kwa madzi. Chifukwa chake, njira yoyeretsera mpweya imadutsa koyamba mu nsanja yoziziritsira mpweya kuti ichepetse kutentha kwa mpweya, motero imachepetsa kuchuluka kwa madzi mumlengalenga.
Mpweya wopanikizika wochokera ku nsanja yoziziritsira mpweya umalowetsedwa mu dongosolo loyeretsera, lomwe limapangidwa makamaka ndi ma adsorber awiri, chotenthetsera nthunzi ndi cholekanitsa mpweya wamadzimadzi. Chotenthetsera cha molecular sieve adsorber ndi kapangidwe ka bedi lopingasa, gawo la pansi limadzazidwa ndi alumina yoyendetsedwa, gawo lapamwamba limadzazidwa ndi sieve ya molecular, ndipo ma adsorber awiri amasinthasintha. Pamene chotenthetsera chimodzi chikugwira ntchito, chotenthetsera china chimapangidwanso ndipo chimawombedwa ndi ozizira kuti chigwiritsidwe ntchito. Mpweya wopanikizika wochokera ku nsanja yoziziritsira mpweya umachotsedwa ndi adsorber ya madzi, CO2 ndi zonyansa zina monga CnHm. Kukonzanso kwa sieve ya molecular kumapangidwa ndi magawo awiri, limodzi ndi nayitrogeni wodetsedwa kuchokera ku fractionator ya mpweya, wotenthedwa ndi chotenthetsera nthunzi kupita ku kutentha kokonzanso, kulowa mu adsorber kuti usinthe kutentha, kuwunika madzi okhudzidwa ndi CO2, yotchedwa gawo lotenthetsera, lina ndi nayitrogeni wodetsedwa osati kudzera mu chotenthetsera nthunzi, kuwombera adsorber yotentha kwambiri kutentha kutentha kwa chipinda, kudzachotsa madzi okhudzidwa ndi CO2 kuchokera ku adsorber. Imatchedwa gawo lozizira lophulika. Nayitrogeni wotayira womwe umagwiritsidwa ntchito potenthetsera ndi kuzizira umatulutsidwa mumlengalenga kudzera mu choletsa mpweya.