Kamfanin ASU yana samar da iskar gas mai amfani da ruwa kamar matakai bakwai masu zuwa:

1. Kafin a matse iskar, ana tace ta da ƙura.

2. Ana matse iska inda ake tantance matsin lamba na ƙarshe ta hanyar dawo da su da yanayin ruwa (gas ko ruwa) na samfuran. Matsakaicin matsin lamba yana tsakanin ma'aunin sanduna 5 zuwa 10. Hakanan ana iya matse kwararar iska zuwa matsin lamba daban-daban don haɓaka ingancin ASU. A lokacin matsewa, ana matse ruwan a cikin na'urorin sanyaya yanayi daban-daban.

3. Iskar da ake amfani da ita galibi ana wucewa ta cikin wani bututun sieve na kwayoyin halitta, wanda ke cire duk wani tururin ruwa da ya rage, da kuma carbon dioxide, wanda zai daskare ya kuma toshe kayan aikin cryogenic. Sau da yawa ana tsara sieve na kwayoyin halitta don cire duk wani iskar hydrocarbons mai iska daga iska, tunda waɗannan na iya zama matsala a cikin distillation na iska mai zuwa wanda zai iya haifar da fashewa. Dole ne a sake sabunta gadon sieve na kwayoyin halitta. Ana yin wannan ta hanyar shigar da na'urori da yawa da ke aiki a cikin yanayi daban-daban da kuma amfani da iskar sharar da aka samar da busasshiyar don cire ruwan.

4. Ana wucewa da iskar da aka sarrafa ta hanyar na'urar musayar zafi mai haɗawa (yawanci na'urar musayar zafi ta farantin fin) sannan a sanyaya ta hanyar amfani da rafukan samfura (da sharar gida). Wani ɓangare na iskar yana samar da ruwa wanda aka wadatar da iskar oxygen. Sauran iskar gas ɗin yana da wadatar nitrogen kuma ana tace shi zuwa kusan sinadarin nitrogen mai tsabta (yawanci < 1ppm) a cikin ginshiƙin distillation mai ƙarfi (HP). Mai na'urar sanyaya iskar wannan ginshiƙi yana buƙatar sanyaya iska wanda aka samu daga faɗaɗa rafin da ke da wadataccen iskar oxygen a cikin bawul ko ta hanyar Expander, (mai amfani da na'urar sanyaya iskar).

5 A madadin haka, ana iya sanyaya na'urar sanyaya iska ta hanyar canza zafi tare da tukunyar dumama a cikin ginshiƙin distillation mai ƙarancin matsin lamba (LP) (wanda ke aiki a 1.21.3 bar abs.) lokacin da ASU ke samar da iskar oxygen mai tsabta. Don rage farashin matsi, na'urar sanyaya iska/sake amfani da ginshiƙan HP/LP dole ne ta yi aiki da bambancin zafin jiki na digiri 1-2 kawai na Kelvin, wanda ke buƙatar musayar zafi na aluminum da aka yi da farantin fin. Tsabtace iskar oxygen na yau da kullun yana tsakanin 97.5% zuwa 99.5% kuma yana tasiri ga mafi girman dawo da iskar oxygen. Ana samun sanyaya iskar da ake buƙata don samar da samfuran ruwa ta amfani da tasirin JT a cikin na'urar faɗaɗawa wacce ke ciyar da iska mai matsi kai tsaye zuwa ginshiƙin ƙaramin matsin lamba. Saboda haka, ba za a raba wani ɓangare na iska ba kuma dole ne ya bar ginshiƙin ƙaramin matsin lamba a matsayin rafin sharar gida daga ɓangaren sama.

6 Saboda tafasar argon (87.3 K a yanayin da aka saba) tana tsakanin iskar oxygen (90.2 K) da nitrogen (77.4 K), argon yana taruwa a ƙasan ginshiƙin ƙaramin matsin lamba. Lokacin da aka samar da argon, ana ɗaukar jan tururi daga ƙaramin matsin lamba.

Ginshiƙi inda yawan argon ya fi yawa. Ana aika shi zuwa wani ginshiƙi yana gyara Argon zuwa tsarkin da ake so wanda daga ciki ake mayar da ruwa zuwa wuri ɗaya a ginshiƙin LP. Amfani da marufi na zamani waɗanda ke da ƙarancin matsi yana ba da damar tsarkake argon na ƙasa da 1 ppm. Kodayake argon yana cikin ƙasa da 1% na abin da ke shigowa, ginshiƙin argon na iska yana buƙatar babban adadin kuzari saboda yawan rabon reflux da ake buƙata (kimanin 30) a ginshiƙin Argon. Ana iya samar da sanyaya ginshiƙin argon daga ruwa mai sanyi ko kuma ta hanyar nitrogen mai ruwa.

7 A ƙarshe, ana ɗumama samfuran da ake samarwa a cikin iskar gas daga iskar da ke shigowa zuwa yanayin zafi na yanayi. Wannan yana buƙatar haɗakar zafi da aka ƙera da kyau wanda dole ne ya ba da damar ƙarfi daga rikice-rikice (saboda canza gadajen sieve na ƙwayoyin halitta). Hakanan yana iya buƙatar ƙarin sanyaya waje yayin farawa.