Kodi ubwino wa mankhwala a aloyi osagwirizana ndi dzimbiri ndi chiyani?
Ma aloyi osamva dzimbiri nthawi zambiri sangagwiritsidwe ntchito m'malo owonongeka omwe amatha kuchepetsedwa kwambiri kapena kusindikiza kwambiri (malo a anoxic), ndipo magwiridwe antchito amasinthidwa pafupipafupi, ndipo amagwiritsidwa ntchito kwambiri, ndipo pali opanga ambiri opanga zinthu, momwe angachitire. sankhani Wopanga yemwe amakuyenererani ndi sayansi.Kumbali imodzi, chidziwitso chiyenera kuganiziridwa pamtengo wamtengo wapatali, ndipo mbali zina ziyenera kuganiziridwa mozama, monga ngati wopanga akulamulidwa komanso ngati ntchito yogulitsa pambuyo pa malonda ndi yotsimikizika.
Aloyi Wolimbana ndi Corrosion
Ndi mitundu yanji ya ma aloyi olimbana ndi dzimbiri?
1. Kuwonongeka kwachitsulo chosapanga dzimbiri
Makamaka amatanthauza wamba 300 mndandanda zosapanga dzimbiri 304, 316L, 317L, etc. kuti kugonjetsedwa ndi mumlengalenga kapena dzimbiri madzi a m'nyanja;austenitic zosapanga dzimbiri 904L, 254SMO ndi kukana dzimbiri wamphamvu;duplex zitsulo 2205, 2507, etc.;ma aloyi osagwirizana ndi dzimbiri okhala ndi CU 20 alloy, etc.
2. Aloyi yosagwirizana ndi dzimbiri
Makamaka Hastelloy alloy ndi NI-CU alloy, etc. Popeza chitsulo NI palokha ali ndi nkhope-centered kiyubiki dongosolo, crystallographic bata ake zimathandiza kuti aloyi zinthu zambiri alloying kuposa FE, monga CR, MO, etc., kuti akwaniritse kukaniza Kutha kwa malo osiyanasiyana;nthawi yomweyo, faifi tambala palokha ali ndi mphamvu inayake kukana dzimbiri, makamaka kutha kukana dzimbiri nkhawa chifukwa chloride ayoni.M'malo amphamvu ochepetsa dzimbiri, malo ovuta osakanikirana a asidi, ndi mayankho okhala ndi ma halogen ayoni, ma aloyi osamva dzimbiri a nickel oimiridwa ndi Hastelloy ali ndi zabwino kwambiri kuposa zitsulo zosapanga dzimbiri zopangidwa ndi chitsulo.
3.Hastelloy ndi ya nickel-molybdenum-chromium-iron-tungsten nickel-based alloy.Ndi imodzi mwazinthu zamakono zomwe sizingawonongeke ndi zitsulo.Imalimbana kwambiri ndi klorini yonyowa, ma chloride osiyanasiyana oxidizing, njira zamchere za chloride, sulfuric acid ndi salt oxidizing, ndipo imakhala ndi kukana kwa dzimbiri mu kutentha kochepa komanso sing'anga kutentha kwa hydrochloric acid.Chifukwa chake, m'zaka makumi atatu zapitazi, lakhala likugwiritsidwa ntchito kwambiri m'malo owopsa, monga makampani opanga mankhwala, mafakitale a petrochemical, desulfurization ya gasi wa flue, zamkati ndi mapepala, kuteteza chilengedwe ndi magawo ena amakampani.Deta zosiyanasiyana zowononga ma alloys a Hastelloy ndizofanana, koma sizingagwiritsidwe ntchito ngati zofotokozera, makamaka m'malo osadziwika, ndipo zida ziyenera kusankhidwa pambuyo poyesedwa.Palibe Cr yokwanira ku Hastelloy yolimbana ndi dzimbiri m'malo okhala ndi okosijeni kwambiri, monga nitric acid yotentha kwambiri.Kupanga aloyi izi makamaka kwa mankhwala ndondomeko chilengedwe, makamaka pamaso pa asidi wosanganiza, monga kumaliseche chitoliro cha flue mpweya desulfurization dongosolo.
Nthawi yotumiza: May-15-2023
