Izingxenye eziyinhloko zomoya ziyi-nitrogen (78%) kanye ne-oxygen (21%), ngakho-ke kungathiwa umoya ungumthombo ongapheli wokulungiselela i-nitrogen ne-oxygen.PSA oxygen plant.I-nitrogen isetshenziselwa kakhulu ukwenza i-ammonia yokwenziwa, umoya wokuvikela ukushisa kwensimbi, igesi evikelayo engasebenzi ekukhiqizeni amakhemikhali (ukuqala nokuvala amapayipi okukhipha ipayipi, ukuvala uphawu lwe-nitrogen yezinto ezikhishwa kalula yi-oxid), ukugcinwa okusanhlamvu, ukulondolozwa kwezithelo, imboni ye-elekthronikhi, njll. ikakhulukazi esetshenziswa njenge-oxidant ku-metallurgy, igesi elisizayo, ukwelashwa, ukwelashwa kwamanzi angcolile, i-pressure swing adsorption nitrogen plant kanye nemboni yamakhemikhali.Indlela yokuhlukanisa umoya ngemali ephansi ukuze kukhiqizwe umoya-mpilo ne-nitrogen kuyinkinga yesikhathi eside efundwa futhi yaxazululwa osokhemisi.
I-nitrogen ehlanzekile ayikwazi ukukhishwa ngokuqondile emvelweni, ngakho-ke ukuhlukaniswa komoya kuyisinqumo sokuqala.Izindlela zokuhlukanisa umoya zifaka indlela yokushisa ephansi, indlela ye-adsorption swing yokucindezela kanye nendlela yokuhlukanisa ulwelwesi.Ngokuthuthuka okusheshayo kwezimboni, i-nitrogen isetshenziswe kabanzi embonini yamakhemikhali, i-electronics, i-metallurgy, ukudla, imishini kanye neminye imikhakha.Isidingo saseChina senitrogen sikhula ngenani laminyaka yonke elingaphezu kuka-8%.I-chemistry ye-nitrogen ayicacile.Ayisebenzi kakhulu ngaphansi kwezimo ezijwayelekile futhi akulula ukusabela ngayo nezinye izinto.Ngakho-ke, i-nitrogen isetshenziswa kabanzi njengokugcinwa kweGesi kanye negesi yokuvala kwensimbi, i-electronics, imboni yamakhemikhali nezinye izimboni.Ngokuvamile, ukuhlanzeka kwegesi yokulungisa kungu-99.99%, kanti okunye kudinga ngaphezu kuka-99.998% we-nitrogen ephezulu.
Ijeneretha ye-nitrogen eyi-Liquid iwumthombo obandayo ofanele, osetshenziswa kabanzi ekugcinweni kwesidoda embonini yokudla, emsebenzini nasekufuyweni kwezilwane.Ekukhiqizeni i-ammonia yokwenziwa embonini kamanyolo, ingxube ye-hydrogen nitrogen egesini yokuphakelayo ye-ammonia yokwenziwa iyagezwa futhi icwengwe nge-nitrogen ewuketshezi.Okuqukethwe kwegesi ye-inert kungase kube phansi kakhulu, futhi okuqukethwe kwe-carbon monoxide nomoya-mpilo akufanele kudlule u-20ppm.
Ukwehlukaniswa kwe-membrane komoya kusebenzisa umgomo wokungena, okungukuthi, amazinga okusabalalisa komoya-mpilo ne-nitrogen kulwelwesi lwe-polymer olungenayo ahlukile.Lapho umoya-mpilo ne-nitrogen kufakwa ebusweni bolwelwesi lwe-polymer, ngenxa ye-gradient yokugxilisa ingqondo ezinhlangothini zombili zolwelwesi, igesi iyahlakazeka futhi idlule kulwelwesi lwe-polymer, bese i-desorbe ngakolunye uhlangothi lwelwelwesi.Ngenxa yokuthi umthamo we-molecule ye-oksijini ungaphansi kwe-molecule ye-nitrogen, izinga lokusabalalisa komoya-mpilo kulwelwesi lwe-polymer likhulu kune-molecule ye-nitrogen.Ngale ndlela, lapho umoya ungena ohlangothini olulodwa lolwelwesi, umoya ocebile komoya-mpilo ungatholakala ngakolunye uhlangothi futhi i-nitrogen ingatholakala ngakolunye uhlangothi.
I-nitrogen ne-oxygen emoyeni enothile ingatholakala ngokuqhubekayo ngokuhlukanisa umoya ngendlela ye-membrane.Njengamanje, i-coefficient yokukhetha ye-polymer membrane yokuhlukaniswa kwe-oxygen ne-nitrogen icishe ibe ngu-3.5 kuphela, futhi i-permeability coefficient nayo incane kakhulu.Ukugxiliswa kwe-nitrogen yomkhiqizo ohlukanisiwe kungama-95 ~ 99%, futhi ukugxila komoyampilo kungu-30 ~ 40% kuphela.Ukuhlukaniswa kwe-Membrane komoya ngokuvamile kwenziwa ekamelweni lokushisa, 0.1 ~ 0.5 × 106pa.
Isikhathi sokuthumela: Jan-18-2022