Nkhani

Zogulitsa za PSA nitrogen jenereta

Ndi chitukuko chofulumira cha mafakitale, nayitrogeni wakhala akugwiritsidwa ntchito kwambiri m'minda ya mankhwala, zamagetsi, zitsulo, chakudya, makina, ndi zina zotero. Kufunika kwa nayitrogeni m'dziko langa kukuwonjezeka pamlingo woposa 8% chaka chilichonse.Nayitrojeni sagwira ntchito ndi mankhwala, ndipo salowa m'malo mwa zinthu wamba, ndipo sikophweka kuchitapo kanthu ndi zinthu zina.Chifukwa chake, nayitrogeni imagwiritsidwa ntchito kwambiri ngati kutchingira gasi ndi kusindikiza gasi mumakampani opanga zitsulo, zamagetsi zamagetsi, komanso mafakitale amafuta.Nthawi zambiri, kuyera kwa gasi wotchinga ndi 99.99%, ndipo ena amafunikira nayitrogeni yoyera yopitilira 99.998%.Nayitrogeni wamadzimadzi ndi gwero lozizira kwambiri, ndipo amagwiritsidwa ntchito kwambiri m'makampani azakudya, m'makampani azachipatala, komanso posungira umuna poweta ziweto.Popanga ammonia opangidwa ndi mafakitale a feteleza, ngati gasi wopangira ammonia-hydrogen ndi nitrogen gasi wosakanikirana amatsukidwa ndikuyengedwa ndi nayitrogeni wamadzimadzi, zomwe zili mugesi wa inert zimatha kukhala zazing'ono kwambiri, komanso zomwe zili mu sulfure. monoxide ndi mpweya sizidutsa 20 ppm.

Nayitrogeni wangwiro sangathe kutengedwa mwachindunji kuchokera ku chilengedwe, ndipo kupatukana kwa mpweya kumagwiritsidwa ntchito makamaka.Njira zolekanitsa mpweya zikuphatikizapo: njira ya cryogenic, njira yochepetsera kuthamanga kwa adsorption (PSA), njira yolekanitsa membrane.

Chiyambi cha njira ndi zida za PSA nitrogen jenereta

Chidziwitso cha kayendedwe ka ndondomeko

Mpweya umalowa mu kompresa ya mpweya pambuyo pochotsa fumbi ndi zonyansa zamakina kudzera mu fyuluta ya mpweya, ndipo umakanizidwa kukakamiza kofunikira.Pambuyo poyeretsa kwambiri, kuchotsa madzi, komanso kuchotsa fumbi, mpweya wabwino woponderezedwa umatuluka kuti uwonetsetse kugwiritsa ntchito ma sieve a maselo mu nsanja ya adsorption.moyo.

Pali nsanja ziwiri za adsorption zokhala ndi sieve ya carbon molecular.Ngati nsanja imodzi ikugwira ntchito, nsanja ina imatsitsidwa kuti iwonongeke.Mpweya woyera umalowa munsanja ya adsorption yomwe ikugwira ntchito, ndipo ikadutsa mu sieve ya maselo, mpweya, carbon dioxide ndi madzi zimatulutsidwa ndi izo.Mpweya womwe umadutsa kumapeto kwa malowo ndi nayitrogeni ndikufufuza kuchuluka kwa argon ndi mpweya.

Nsanja ina (desorption tower) imalekanitsa mpweya wa adsorbed, carbon dioxide ndi madzi kuchokera ku ma pores a molecular sieve ndikutulutsa mumlengalenga.Mwanjira imeneyi, nsanja ziwirizi zimachitikanso kuti amalize kupatukana kwa nayitrogeni ndi okosijeni ndikupitilira nayitrogeni.Kuyera kwa nayitrogeni wopangidwa ndi kuthamanga kwa kuthamanga (_bian4 ya1) adsorption ndi 95% -99.9%.Ngati nayitrogeni yoyera kwambiri ikufunika, zida zoyeretsera nayitrojeni ziyenera kuwonjezeredwa.

The 95% -99.9% nayitrogeni linanena bungwe kuthamanga kuthamanga adsorption nayitrogeni jenereta amalowa nayitrogeni kuyeretsedwa zida, ndipo nthawi yomweyo kuchuluka kwa haidrojeni anawonjezera kudzera flowmeter, ndi hydrogen ndi kufufuza mpweya mu nayitrogeni ndi catalytically anachita mu. nsanja ya deoxygenation ya zida zoyeretsera kuchotsa Mpweya wa oxygen umatsitsidwa ndi condenser yamadzi, cholekanitsa chamadzi cha nthunzi chimachotsedwa, kenako chowumitsidwa mozama ndi chowumitsira (nsanja ziwiri zowumitsa zowumitsa zimagwiritsidwa ntchito mosiyanasiyana: imodzi imagwiritsidwa ntchito kutsatsa komanso kuyanika kuti achotse madzi, enawo amatenthedwa kuti awonongeke ndi kukhetsa madzi kuti apeze nitrogen yoyera kwambiri Kuyera kwa nayitrogeni kumatha kufika 99.9995%.