Nkhani

Zida zopangira nayitrogeni zimapezeka polekanitsa mpweya ndi nayitrogeni kuzinthu zopangira pogwiritsa ntchito mpweya ngati zinthu zopangira.
Pali mitundu itatu ya nayitrogeni wa mafakitale:
◆Cryogenic mpweya kulekana nayitrogeni
Nayitrogeni wolekanitsa mpweya wa Cryogenic ndi njira yachikhalidwe yopanga nayitrogeni yomwe yakhalapo zaka makumi angapo zapitazi.Amagwiritsa ntchito mpweya ngati zopangira, amapanikizidwa, amayeretsedwa, kenako amagwiritsa ntchito kusinthana kwa kutentha kuti asungunuke mpweya kukhala mpweya wamadzimadzi.Mpweya wamadzimadzi umakhala wosakanikirana ndi mpweya wamadzimadzi ndi nayitrogeni wamadzimadzi, womwe uli ndi mfundo zowira zosiyanasiyana za mpweya wamadzimadzi ndi nayitrogeni wamadzimadzi (malo owirako akale ndi -183 ° C pa 1 atm, ndipo chomaliza ndi -196 ° C) , ndi distillation mwa madzi mpweya Alekanitse iwo kupeza asafe.The cryogenic mpweya kupatukana nayitrogeni zipangizo kupanga ndi zovuta, chimakwirira dera lalikulu, ali mkulu likulu mtengo, ndipo ali ndi ndalama yaikulu zida, mkulu ntchito mtengo, otsika mpweya kupanga (12 kwa 24 maola), mkulu unsembe zofunika ndi mkombero yaitali.Comprehensive zida, unsembe ndi zomangamanga zinthu, zida m'munsimu 3500Nm3 / h, kukula ndalama PSA zida za mfundo zomwezo ndi 20% ~ 50% m'munsi kuposa unit cryogenic mpweya kulekana.Chomera cha nayitrogeni cholekanitsa mpweya cha cryogenic ndi choyenera kupanga nayitrogeni m'mafakitale akuluakulu, pomwe kupanga nayitrogeni wapakatikati ndi wang'ono ndi wopanda chuma.

◆ molecular sieve nayitrogeni
Njira yomwe mpweya umagwiritsidwa ntchito ngati zopangira, sieve ya carbon molecular imagwiritsidwa ntchito ngati adsorbent, njira yolumikizira mpweya imagwiritsidwa ntchito, ndipo njira yosankha ya okosijeni ndi nayitrogeni ndi sieve ya carbon molecular imagwiritsidwa ntchito kulekanitsa nayitrogeni ndi okosijeni. nthawi zambiri amatchedwa PSA kupanga nayitrogeni.Njira imeneyi ndi teknoloji yatsopano yopanga nayitrogeni yomwe idapangidwa mwachangu m'ma 1970.Poyerekeza ndi njira yachikhalidwe yopanga nayitrogeni, imakhala ndi njira yosavuta, yodzipangira okha, kupanga gasi mwachangu (mphindi 15 mpaka 30), kugwiritsa ntchito mphamvu zochepa, kuyeretsa kwazinthu kumatha kusinthidwa malinga ndi zosowa za ogwiritsa ntchito osiyanasiyana, ntchito yosavuta komanso kukonza. , ntchito Mtengo wotsika komanso kusinthasintha kwamphamvu kwa chipangizocho, chifukwa chake chimakhala chopikisana ndi zida zopangira nayitrogeni pansi pa 1000Nm3/h.Ndiwotchuka kwambiri pakati pa ogwiritsa ntchito ang'onoang'ono ndi apakatikati.PSA nitrogen yakhala chisankho choyamba kwa ogwiritsa ntchito nayitrogeni apakatikati ndi ang'onoang'ono.njira.

◆ nayitrogeni wolekanitsa mpweya
Mpweya umagwiritsidwa ntchito ngati zopangira, ndipo pansi pa zovuta zosiyanasiyana, mpweya wa zinthu zosiyanasiyana monga okosijeni ndi nayitrogeni umakhala ndi mitundu yosiyanasiyana ya kulowetsedwa mu nembanemba kuti ulekanitse mpweya ndi nayitrogeni.Poyerekeza ndi zipangizo zina zopangira nayitrogeni, zimakhala ndi ubwino wa mapangidwe osavuta, voliyumu yaying'ono, osasintha valavu, kusamalidwa pang'ono, kupanga gasi mofulumira (≤3 mphindi), kuwonjezereka kwa mphamvu, ndi zina zotero. Ndizoyenera kwambiri kuyera kwa nayitrogeni ≤ 98 % ya ogwiritsira ntchito nayitrogeni apakati ndi ang'onoang'ono ali ndi chiŵerengero chabwino kwambiri cha mtengo/ntchito.Kuyera kwa nayitrogeni kukakhala pamwamba pa 98%, kumakhala kopitilira 15% kuposa zida zopangira nayitrogeni za PSA zamtundu womwewo.