Izitshalo ze-oksijeni zikhiqiza umoya-mpilo zisebenzisa indlela yokuhlukanisa umoya we-cryogenic, inqubo ethize yayo elandelayo:
Ukwelashwa komoya kuqala: Umoya uyahlungwa ukukhipha uthuli nokungcola, bese ucindezelwa yi-compressor.
Ukupholisa kanye ne-liquefaction: Umoya onomfutho upholiswa ube esimweni esiwuketshezi kusetshenziswa iyunithi yesiqandisi.
Ukuhlukaniswa kwe-distillation: Kukholomu ye-distillation, kusetshenziswa umehluko wamaphuzu abilayo phakathi kwe-oxygen (iphuzu elibilayo -183 degree) ne-nitrogen (iphuzu elibilayo -196 degree), i-nitrogen iyahwamuka futhi ihlukaniswe ukushisisa nokukhishwa kwe-distillation, okushiya ikakhulukazi umoya-mpilo owuketshezi.
Ukuqoqwa komkhiqizo: Ngemva kokuhwamuka, umoya-mpilo owuketshezi ukhipha umoya-mpilo ofunekayo{0}}wokuhlanzeka okuphezulu, ngokuvamile nobumsulwa obungaphezu kuka-99.6%.
Le ndlela isebenzisa izinguquko zomzimba ukuhlukanisa umoya-mpilo ne-nitrogen. Izinto zokusetshenziswa zitholakala kabanzi futhi azibizi, okuyenza ifanele-ukukhiqizwa kwezimboni ezinkulu. Ngaphezu kwalokho, kunezinye izindlela zokukhiqiza umoya-mpilo ezifana ne-molecular sieve adsorption kanye ne-electrolysis yamanzi, kodwa indlela yokuhlukanisa umoya we-cryogenic iyindlela eyinhloko esetshenziswa ezimbonini.