Cov piv txwv ntawm Deoxidizer yog dab tsi?
Dec 23, 2023
Cov piv txwv ntawm deoxidizer yog dab tsi?
Deoxidizers ua lub luag haujlwm tseem ceeb hauv ntau yam kev lag luam thiab kev siv. Cov tshuaj no yog siv los tshem tawm lossis tshem tawm cov pa oxygen los ntawm lub cev, tiv thaiv oxidation thiab lwm yam teeb meem. Deoxidizers tuaj yeem pom nyob rau hauv ntau hom, xws li gases, kua, lossis khoom khib nyiab. Hauv tsab xov xwm no, peb yuav tshawb txog qee qhov piv txwv ntawm deoxidizers siv hauv ntau yam lag luam.
Gas Deoxidizers:
1. Hydrogen (H2): Hydrogen gas yog ib qho ntawm feem ntau siv deoxidizers. Nws muaj siab reactivity nrog oxygen, ua rau tsim cov dej vapor. Hydrogen gas feem ntau yog siv nyob rau hauv ntau yam metallurgical txheej txheem, xws li steelmaking, tshem tawm oxygen thiab lwm yam impurities los ntawm molten hlau.
2. Cov pa roj carbon dioxide (CO2): Cov pa roj carbon dioxide yog lwm cov khoom siv deoxidizer. Nws yog feem ntau ua hauj lwm nyob rau hauv vuam daim ntawv thov los tiv thaiv cov hlau molten los ntawm atmospheric oxygen. Cov pa roj carbon dioxide kuj tseem pab txhim kho qhov zoo ntawm vuam los ntawm kev txo qhov tsim ntawm oxides thiab txhawb kev fusion zoo dua.
3. Nitrogen (N2): Thaum nitrogen yog cov roj inert, nws kuj tuaj yeem siv los ua deoxidizer hauv qee yam kev siv. Nitrogen roj feem ntau yog siv los tsim ib qho chaw tsis muaj oxygen, tiv thaiv oxidation hauv kev lag luam xws li kev ua zaub mov, kev tsim tshuaj, thiab kev tsim hluav taws xob.
Ua kua deoxidizers:
1. Sodium Sulfite (Na2SO3): Sodium sulfite yog cov kua deoxidizer dav siv, tshwj xeeb tshaj yog nyob rau hauv kev lag luam kho dej. Nws ua raws li tus neeg sawv cev txo qis, tshem tawm cov pa oxygen los ntawm dej los tiv thaiv corrosion thiab tsim cov nplai. Sodium sulfite kuj tseem siv hauv kev lag luam duab los tiv thaiv oxidation ntawm kev tsim cov kev daws teeb meem.
2. Sodium Bisulfite (NaHSO3): Lwm cov kua deoxidizer feem ntau siv hauv kev lag luam kho dej yog sodium bisulfite. Nws reacts nrog yaj oxygen, converting nws mus rau hauv harmless compounds. Sodium bisulfite muaj txiaj ntsig zoo hauv kev tiv thaiv cov pa oxygen ntsig txog corrosion hauv cov kav dej, lub tshuab boiler, thiab cov yees txias.
3. Hydrazine (N2H4): Hydrazine yog lub zog ua kua deoxidizer feem ntau siv hauv boiler systems. Nws sai sai reacts nrog yaj oxygen, tsim nitrogen gas thiab dej. Hydrazine tiv thaiv corrosion thiab pitting hauv chav boilers, kom ntseeg tau tias kev ua haujlwm zoo ntawm cov chaw tsim hluav taws xob thiab chaw tsim khoom.
Khoom Deoxidizers:
1. Aluminium (Al): Aluminium yog ib qho khoom siv deoxidizer, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem steelmaking. Aluminium reacts nrog oxygen los tsim aluminium oxide, tshem tawm cov pa oxygen los ntawm cov hlau molten. Nws kuj ua raws li cov nplej refiner, txhim kho cov khoom siv ntawm cov khoom hlau kawg.
2. Ferrosilicon (FeSi): Ferrosilicon yog ib qho hlau uas muaj hlau thiab silicon, feem ntau siv los ua cov khoom deoxidizer hauv steel ntau lawm. Nws reacts nrog oxygen los tsim silica (SiO2) thiab hlau oxide (FeO), tiv thaiv kev tsim ntawm undesirable oxides. Ferrosilicon tseem pab tswj cov qoob loo loj thiab txhim kho tag nrho cov hlau zoo.
3. Zirconium (Zr): Zirconium yog ib qho khoom deoxidizer nrov ua haujlwm hauv qee yam kev siv metallurgical. Nws muaj affinity siab rau oxygen, tsim ruaj khov zirconium oxide (ZrO2) tebchaw. Zirconium zoo tshem tawm cov pa oxygen los ntawm cov alloys thaum lub sij hawm melting thiab casting txheej txheem, kom ntseeg tau cov khoom uas xav tau.
Xaus:
Deoxidizers yog cov khoom tseem ceeb hauv ntau qhov kev lag luam, ua kom muaj txiaj ntsig zoo ntawm cov txheej txheem thiab tiv thaiv cov teeb meem oxidation. Gas deoxidizers, suav nrog hydrogen, carbon dioxide, thiab nitrogen, yog siv dav hauv metallurgy, vuam, thiab kev tsim khoom. Cov kua deoxidizers zoo li sodium sulfite, sodium bisulfite, thiab hydrazine feem ntau ua haujlwm hauv kev kho dej thiab boiler systems. Cov khoom deoxidizers xws li txhuas, ferrosilicon, thiab zirconium nrhiav kev siv hauv steelmaking thiab lwm yam txheej txheem metallurgical. Nkag siab txog qhov tsim nyog deoxidizer siv rau hauv cov ntawv thov tshwj xeeb yog qhov tseem ceeb los xyuas kom meej cov txiaj ntsig xav tau thiab tiv thaiv cov teeb meem cuam tshuam nrog oxidation.