Zigawo zazikulu za mpweya ndi nayitrogeni (78%) ndi mpweya (21%), kotero tinganene kuti mpweya ndi gwero losatha pokonzekera nayitrogeni ndi mpweya.PSA oxygen chomera.Nayitrogeni amagwiritsidwa ntchito makamaka popanga ammonia, zitsulo zotetezera kutentha kwazitsulo, mpweya wotetezera mukupanga mankhwala (kuyambira ndi kutsekedwa kwa mapaipi, kusindikiza kwa nayitrogeni wa zinthu zosavuta okosijeni), kusungirako tirigu, kusunga zipatso, makampani amagetsi, etc. Oxygen ndi Amagwiritsidwa ntchito kwambiri ngati oxidant muzitsulo, gasi wothandizira, chithandizo chamankhwala, kuchiza madzi oyipa, kuthamanga kwa adsorption nayitrogeni chomera ndi makampani opanga mankhwala.Momwe mungasiyanitsire mpweya motsika mtengo kuti mupange mpweya ndi nayitrogeni ndi vuto lanthawi yayitali lomwe limaphunziridwa ndikuthetsedwa ndi akatswiri azamankhwala.
Nayitrogeni wangwiro sangathe kuchotsedwa mwachindunji ku chilengedwe, kotero kulekanitsa mpweya ndiko kusankha koyamba.Njira zolekanitsa mpweya zimaphatikizanso kutentha pang'ono, kutsika kwamphamvu kwa adsorption ndi njira yolekanitsa membrane.Ndi kukula mofulumira kwa mafakitale, nayitrogeni wakhala chimagwiritsidwa ntchito makampani mankhwala, zamagetsi, zitsulo, chakudya, makina ndi zina.Kufuna kwa China kwa nayitrogeni kukukulirakulira pachaka kuposa 8%.The chemistry ya nayitrogeni si bwino.Ndiwopanda mphamvu kwambiri pansi pazikhalidwe wamba ndipo sizovuta kuchitapo kanthu ndi zinthu zina.Choncho, nayitrogeni chimagwiritsidwa ntchito monga kukonza Gasi ndi kusindikiza mpweya mu zitsulo, zamagetsi, makampani mankhwala ndi mafakitale ena.Nthawi zambiri, kuyera kwa gasi wokonza ndi 99.99%, ndipo ena amafunikira nayitrogeni wopitilira 99.998%.
Jenereta wa nayitrogeni wamadzimadzi ndi gwero lozizira bwino, lomwe limagwiritsidwa ntchito kwambiri posungira umuna m'makampani azakudya, ntchito ndi kuweta ziweto.Popanga ammonia opangira feteleza, osakaniza a haidrojeni nayitrogeni mu mpweya wopangira ammonia amatsukidwa ndikuyengedwa ndi nayitrogeni wamadzimadzi.Zomwe zili mu mpweya wa inert zingakhale zotsika kwambiri, ndipo zomwe zili mu carbon monoxide ndi mpweya sizidzapitirira 20ppm.
Kupatukana kwa mpweya kumatengera njira yolowera, ndiko kuti, kuchuluka kwa mpweya ndi nayitrogeni mu nembanemba yopanda polima ndi yosiyana.Pamene mpweya ndi nayitrogeni zimadyedwa pamwamba pa nembanemba ya polima, chifukwa cha kuchuluka kwa ndende kumbali zonse za nembanembayo, mpweyawo umafalikira ndikudutsa pakhungu la polima, kenako ndikuwotcha mbali ina ya nembanembayo.Chifukwa kuchuluka kwa molekyulu ya okosijeni ndi yocheperako poyerekeza ndi molekyu ya nayitrogeni, kuchuluka kwa okosijeni mu membrane wa polima kumakhala kwakukulu kuposa molekyu ya nayitrogeni.Mwa njira iyi, mpweya ukalowa mbali imodzi ya nembanemba, mpweya wochuluka wa okosijeni ukhoza kupezeka mbali inayo ndipo nayitrogeni imapezekanso mbali imodzi.
Mpweya wa nayitrojeni ndi okosijeni ukhoza kupezeka mosalekeza polekanitsa mpweya ndi njira ya nembanemba.Pakali pano, coefficient selectivity wa nembanemba polima kwa mpweya ndi nayitrogeni kulekana ndi pafupifupi 3.5, ndipo permeability coefficient ndi ochepa kwambiri.Mlingo wa nayitrogeni wa mankhwala olekanitsidwa ndi 95 ~ 99%, ndipo kuchuluka kwa okosijeni ndi 30 ~ 40% yokha.Kupatukana kwa membrane kwa mpweya nthawi zambiri kumachitika kutentha kwapakati, 0.1 ~ 0.5 × 106pa.
Nthawi yotumiza: Jan-18-2022