Izindaba

Imishini yokwenza i-nitrogen itholakala ngokuhlukanisa umoya ne-nitrogen entweni eluhlaza kusetshenziswa umoya njengempahla eluhlaza.
Kunezinhlobo ezintathu ze-nitrogen yezimboni:
◆Cryogenic air separation nitrogen
I-Cryogenic air separation nitrogen iyindlela yendabuko yokukhiqiza i-nitrogen ebilokhu ikhona emashumini eminyaka amuva nje.Isebenzisa umoya njengento eluhlaza, iyacindezelwa, ihlanzwe, bese isebenzisa ukushintshaniswa kokushisa ukuze ifake umoya emoyeni owuketshezi.Umoya owuketshezi ngokuyinhloko uyingxube ye-oksijini ewuketshezi kanye ne-nitrogen eyi-liquid, enamaphuzu ahlukene abilayo omoya-mpilo owuketshezi kanye ne-nitrogen eyi-liquid (iphuzu lokubilisa langaphambili liyi--183 ° C ku-1 atm, kanti yokugcina -196 ° C) , kanye ne-distillation ngomoya owuketshezi Zihlukanise ukuze uthole i-nitrogen.Imishini yokukhiqiza i-nitrogen yokuhlukanisa umoya i-cryogenic iyinkimbinkimbi, ihlanganisa indawo enkulu, inezindleko ezinkulu zemali, futhi inotshalomali olukhulu emishinini, izindleko zokusebenza eziphezulu, ukukhiqizwa kwegesi ephansi (amahora angu-12 kuya kwangu-24), izidingo zokufakwa okuphezulu kanye nomjikelezo omude.Imishini ephelele, ukufakwa kanye nezici zengqalasizinda, okokusebenza okungaphansi kuka-3500Nm3 / h, usayizi wokutshalwa kwezimali wemishini ye-PSA yokucaciswa okufanayo kungu-20% ~ 50% ngaphansi kweyunithi yokuhlukanisa umoya we-cryogenic.Isitshalo se-nitrogen se-cryogenic air separation silungele ukukhiqizwa kwe-nitrogen yezimboni ezinkulu, kuyilapho ukukhiqizwa kwe-nitrogen esezingeni eliphakathi nelincane akunamali.

◆Sieve ye-nitrogen yemolekyuli
Indlela lapho kusetshenziswa umoya njengempahla eluhlaza, isisefo se-carbon molecular sieve sisetshenziswa njenge-adsorbent, kusetshenziswa isimiso sokushintsha umfutho we-adsorption, futhi ukufakwa okukhethiwe komoya-mpilo ne-nitrogen ngesisefo se-carbon molecular sisetshenziswa ukuhlukanisa i-nitrogen nomoya-mpilo. ngokuvamile ibizwa ngokuthi ukukhiqizwa kwe-nitrogen ye-PSA.Le ndlela iwubuchwepheshe obusha bokukhiqiza initrogen eyathuthukiswa ngokushesha ngeminyaka yawo-1970.Uma kuqhathaniswa nendlela yendabuko yokukhiqiza i-nitrogen, inenqubo elula, izinga eliphezulu lokuzenzakalelayo, ukukhiqizwa kwegesi okusheshayo (imizuzu eyi-15 kuye kwengama-30), ukusetshenziswa kwamandla okuphansi, ukuhlanzeka komkhiqizo kungalungiswa ngokuya ngezidingo zomsebenzisi ebangeni elibanzi, ukusebenza okulula nokugcinwa. , ukusebenza Izindleko eziphansi nokuvumelana nezimo okuqinile kwedivayisi, ngakho-ke inokuncintisana emishinini yokukhiqiza i-nitrogen engaphansi kuka-1000Nm3/h.Iya ngokuya idume phakathi kwabasebenzisi be-nitrogen abancane nabaphakathi nendawo.I-PSA nitrogen isibe yinketho yokuqala kubasebenzisi be-nitrogen abaphakathi nabancane.indlela.

◆ I-nitrogen yokuhlukanisa umoya we-membrane
Umoya usetshenziswa njengempahla eluhlaza, futhi ngaphansi kwezimo zengcindezi ehlukene, amagesi ezakhiwo ezahlukene ezifana ne-oxygen ne-nitrogen anezilinganiso ezihlukene zokungena kulwelwesi ukuze ahlukanise umoya-mpilo ne-nitrogen.Uma kuqhathaniswa neminye imishini yokwenza i-nitrogen, inezinzuzo zesakhiwo esilula, ivolumu encane, ayikho i-valve yokushintsha, ukulungiswa okuncane, ukukhiqizwa kwegesi okusheshayo (≤3 amaminithi), ukukhushulwa kwamandla okulula, njll. Ifaneleka ngokukhethekile ukuhlanzeka kwe-nitrogen ≤ 98 I-% yabasebenzisi be-nitrogen abamaphakathi nabancane banenani elingcono kakhulu/isilinganiso sokusebenza.Uma ubumsulwa be-nitrogen bungaphezu kwama-98%, bungaphezulu kuka-15% ngaphezu kwemishini yokwenza i-nitrogen ye-PSA yencazelo efanayo.