Izindaba

I-pressure swing adsorption ukukhiqizwa kwe-nitrogen

isebenzisa umoya njengempahla eluhlaza, isisefo se-carbon molecular as the adsorbent, kusetshenziswa isimiso somfutho we-swing adsorption, ukusetshenziswa kwe-carbon molecular sieve ukuze ukhethe ngokukhetha umoya-mpilo ne-nitrogen ukuhlukanisa i-nitrogen nomoya-mpilo, owaziwa ngokuthi yi-PSA nitrogen.Le ndlela iwubuchwepheshe obusha bokukhiqiza initrogen eyakhula ngokushesha ngeminyaka yawo-1970.Uma kuqhathaniswa nendlela yendabuko yokukhiqiza i-nitrogen, inezinzuzo zokugeleza kwenqubo elula, izinga eliphezulu lokuzenzekelayo, ukukhiqizwa kwegesi esheshayo (imizuzu eyi-15-30), ukusetshenziswa kwamandla okuphansi, ukuhlanzeka komkhiqizo kungalungiswa ebangeni elikhulu ngokuya ngezidingo zomsebenzisi, ukusebenza nokugcinwa kulula, futhi ukusebenza Ngezimpawu zezindleko eziphansi nokuvumelana nezimo okuqinile, inokuncintisana kakhulu emishinini yokukhiqiza i-nitrogen engaphansi kuka-1000Nm3/h, futhi iya ngokuya ithandwa kakhulu ngabasebenzisi be-nitrogen abancane nabaphakathi.Ukukhiqizwa kwe-nitrogen ye-PSA sekube yinketho yokuqala yendlela yabasebenzisi be-nitrogen abancane nabaphakathi.

I-Cryogenic Air Separation Nitrogen

Ukukhiqizwa kwe-nitrogen ye-Cryogenic ngokuhlukaniswa komoya kuyindlela evamile yokukhiqiza i-nitrogen enomlando wamashumi ambalwa eminyaka.Isebenzisa umoya njengempahla eluhlaza, ecindezelwe futhi ehlanjululwe, bese isebenzisa ukushintshanisa ukushisa ukuze incibilikise umoya emoyeni owuketshezi.I-Air Liquide ngokuyinhloko iyingxube yomoya-mpilo owuketshezi kanye ne-nitrogen ewuketshezi, kusetshenziswa amaphuzu ahlukene abilayo omoya-mpilo owuketshezi kanye ne-nitrogen ewuketshezi (emkhathini ongu-1, indawo yokubilisa yangaphambili ingu -183°C, kanti yokugcina ingu -196°C) , ngokulungiswa kwe-Liquid Air, Zihlukanise ukuze uthole i-nitrogen.Imishini yokukhiqiza i-nitrogen yokuhlukanisa umoya i-Cryogenic iyinkimbinkimbi, ihlanganisa indawo enkulu, izindleko zengqalasizinda eziphezulu, ukutshalwa kwezimali kwemishini yesikhathi esisodwa, izindleko zokusebenza eziphezulu, ukukhiqizwa kwegesi okunensayo (12-24h), izidingo zokufakwa okuphezulu, nomjikelezo omude.Amathuluzi aphelele, izici zokufakwa kanye nengqalasizinda, okokusebenza okungaphansi kuka-3500Nm3/h, isikali sokutshala imali sedivayisi ye-PSA yesicaciso esifanayo siphansi ngo-20% -50% kunaleso sedivayisi yokuhlukanisa umoya we-cryogenic.Imishini yokukhiqiza i-nitrogen yokuhlukanisa umoya i-Cryogenic ifanele ukukhiqizwa kwe-nitrogen yezimboni ezinkulu, kuyilapho ukukhiqizwa kwe-nitrogen esezingeni eliphakathi nendawo akunamali.

I-Membrane Air Separation Ukukhiqizwa kweNitrojeni

Ukusebenzisa umoya njengempahla eluhlaza, ngaphansi kwezimo ezithile zengcindezi, ukusetshenziswa komoyampilo ne-nitrogen namanye amagesi anezakhiwo ezihlukene kulwelwesi anamazinga ahlukene okungena ukuze ahlukanise umoya-mpilo ne-nitrogen.Uma kuqhathaniswa nezinye izinto zokukhiqiza i-nitrogen, inezinzuzo zesakhiwo esilula, ivolumu encane, ayikho i-valve yokushintsha, ukunakekelwa okuncane, ukukhiqizwa kwegesi okusheshayo (≤3 amaminithi), kanye nokwandiswa komthamo okulula.Ifaneleka ngokukhethekile ukuhlanzeka kwe-nitrogen ≤ 98% wabasebenzisi be-nitrogen abamaphakathi nabancane banesilinganiso esingcono kakhulu sentengo-kuya-umsebenzi.Uma ubumsulwa be-nitrogen bungaphezu kwama-98%, intengo yayo ingaphezulu kuka-15% ngaphezu kwejeneretha ye-nitrogen ye-PSA yokucaciswa okufanayo.