tarkacen cire helium don cire helium daga iskar gas
cikakken bayani game da samfurin
A halin yanzu, hanyoyin fitar da helium daga iskar gas sun haɗa da hanyar cryogenic, hanyar shaƙa, hanyar rabuwar membrane, ko haɗuwa da hanyoyi biyu ko uku daga cikin uku. Tsarkakakkiyar helium ta samfurin don cire Helium zai iya cika kashi 99.9999%
(1) Hanyar cryogenic
Tsarin tace iskar gas na cryogenic hanya ce da aka saba amfani da ita a yawancin masana'antun helium na iskar gas na matsakaici zuwa manyan. Manufar ita ce a yi amfani da sinadarin nitrogen mai ruwa a matsayin mai sanyaya iska (kimanin -190 ℃) don a hankali a tara sinadarin hydrocarbons da sauran abubuwan da ke cikin iskar gas. Saboda ƙarancin tafasar iskar helium, a ƙarshe ana raba shi da sauran abubuwan da ke cikin iskar gas. Wannan hanya ce ta gama gari a cikin tsarin fitar da iskar helium.
(2) Hanyar Shaƙar Matsi Mai Juyawa
Tsarin shaƙar matsi (PSA) yana amfani da sinadarai daban-daban don shaƙar abubuwan da ba su da sinadarin helium a cikin iskar gas, ta haka ne yake raba samfuran helium. Gabaɗaya, hasumiyoyin shaƙar PSA suna da gadajen raba kayan shaƙar daban-daban don magance abubuwa daban-daban a cikin iskar gas, kamar su gel na silica ko gadajen alumina don cire ruwa, gadajen carbon da aka kunna don cire carbon dioxide, gadajen zeolite don cire methane da nitrogen, da sauransu. Bayan shaƙar ta cika iskar gas mai ƙazanta, ana iya amfani da hanyoyi kamar busar da iskar gas mai rage matsin lamba ko famfo mai tsabta don cire iskar gas mai ƙazanta da kuma dawo da aikin shaƙar.
(3) Hanyar Rabawa a Matattarar Jiki
Famfon raba iskar gas wata sabuwar fasaha ce ta rabuwa. Ana iya canja wurin sinadaran iskar gas zuwa ga fina-finan polymer (kamar su acetate fibers, polypropylene, poly-sulfone, polyimide, da sauransu) bisa ga ka'idar wargajewa. Rabawar kowane bangare ana cimma ta ne bisa ga bambancin adadin narkewa da yaduwar sinadaran iskar gas daban-daban a cikin kayan membrane. Lokacin da gaurayen iskar gas guda biyu ko fiye suka ratsa ta cikin fim ɗin polymer, yawan shigar sinadaran kamar helium da hydrogen ya fi na nitrogen, methane, da sauran hydrocarbons girma.
Ba za a iya samar da helium a masana'antu ba, ana iya tsarkake shi ne kawai. A gwaje-gwajen kimiyyar lissafi, ana iya samunsa ta hanyar ruɓewar atomic, amma a cikin ƙaramin adadi. A ka'ida, ana iya fitar da shi daga iska, amma saboda ƙarancin sinadarin helium a cikin iska, ana iya samun helium daga iskar gas mai ɗauke da kusan kashi 0.5% na helium a masana'antu ta hanyar rabuwa, tsaftacewa, da tsarkake na'urorin haƙo helium.