Txheej txheem cej luam ntawm activated alumina
Alumina ua kom nquag, tseem hu ua bauxite ua kom nquag, hu ua activated alumina hauv lus Askiv. Alumina siv rau hauv cov catalysts feem ntau hu ua "activated alumina". Nws yog cov khoom siv khov kho uas muaj qhov porous, muaj qhov loj ntawm thaj chaw. Nws qhov chaw microporous muaj cov yam ntxwv uas xav tau rau catalysis, xws li kev ua tau zoo ntawm kev nqus, kev ua haujlwm ntawm qhov chaw, kev ruaj khov thermal zoo heev, thiab lwm yam, yog li nws yog siv dav ua tus catalyst thiab tus neeg nqa khoom catalyst rau cov tshuaj tiv thaiv.
Cov roj alumina spherical activated pressure swing yog cov khoom dawb spherical porous. Cov alumina activated muaj qhov loj me sib npaug, du nto, muaj zog heev, hygroscopicity zoo, tsis o thiab tawg tom qab nqus dej, thiab tseem tsis hloov pauv. Nws tsis muaj tshuaj lom, tsis muaj ntxhiab, thiab tsis yaj hauv dej thiab ethanol.
Alumina
Nws tsis yaj hauv dej thiab maj mam yaj hauv cov kua qaub sulfuric uas muaj concentrated. Nws siv tau los ua kom cov hlau txhuas zoo thiab tseem yog cov khoom siv raw rau kev ua cov crucibles, porcelain, cov ntaub ntawv refractory thiab cov pob zeb cuav.
Alumina siv ua adsorbent, catalyst thiab catalyst carrier hu ua "activated alumina". Nws muaj cov yam ntxwv ntawm porosity, high dispersion thiab loj qhov chaw tshwj xeeb. Nws yog dav siv hauv kev kho dej, petrochemical, tshuaj zoo, biological thiab tshuaj.
Cov yam ntxwv ntawm alumina
1. Thaj chaw loj: alumina ua kom muaj thaj chaw tshwj xeeb siab. Los ntawm kev tswj hwm lub kaw lus sintering ntawm alumina, alumina ua kom muaj thaj chaw tshwj xeeb txog li 360m2 / G tuaj yeem npaj tau. Alumina ua kom muaj thaj chaw tshwj xeeb npaj los ntawm kev siv colloidal aluminium hydroxide decomposed los ntawm NaAlO2 ua cov khoom siv raw muaj qhov me me thiab thaj chaw tshwj xeeb txog li 600m2 / g.
2. Cov qauv qhov loj me uas hloov kho tau: Feem ntau, cov khoom uas muaj qhov loj me nruab nrab tuaj yeem npaj tau los ntawm kev ci nrog cov txhuas hydroxide ntshiab. Cov khoom me me tuaj yeem npaj tau los ntawm kev npaj cov alumina ua haujlwm nrog cov kua nplaum txhuas, thiab lwm yam. thaum cov alumina ua haujlwm loj tuaj yeem npaj tau los ntawm kev ntxiv qee cov organic, xws li ethylene glycol thiab fiber, tom qab hlawv.
3. Qhov saum npoo yog acidic thiab muaj kev ruaj khov zoo thermal.
Kev ua haujlwm ntawm alumina ua haujlwm
Alumina ua kom nquag yog ib feem ntawm cov tshuaj alumina, uas feem ntau yog siv los ua adsorbent, purifier dej, catalyst thiab catalyst carrier. Alumina ua kom nquag muaj peev xwm xaiv tau adsorb dej hauv cov roj, cov dej ua pa thiab qee cov kua. Tom qab adsorption saturated, nws tuaj yeem ua kom sov li ntawm 175-315 degrees. Adsorption thiab reactivation tuaj yeem ua tau ntau zaus.
Ntxiv rau kev siv ua desiccant, nws kuj tseem tuaj yeem nqus cov roj lubricating vapor los ntawm cov pa oxygen, hydrogen, carbon dioxide, roj ntuj, thiab lwm yam. Thiab tuaj yeem siv ua catalyst thiab catalyst txhawb nqa thiab ua kev txhawb nqa rau kev tshuaj xyuas chromatographic.
Nws siv tau ua tus neeg sawv cev defluorinating rau cov dej haus fluorine siab (nrog lub peev xwm defluorinating loj), tus neeg sawv cev defluorinating rau kev ncig cov alkanes hauv kev tsim cov alkylbenzene, tus neeg sawv cev deacidifying thiab regenerating rau roj transformer, tus neeg sawv cev ziab rau roj hauv kev lag luam ua pa oxygen, kev lag luam textile thiab kev lag luam hluav taws xob, tus neeg sawv cev ziab rau cov cuab yeej cua tsis siv neeg, thiab tus neeg sawv cev ziab thiab tus neeg sawv cev ntxuav hauv cov tshuaj chiv, petrochemical ziab thiab lwm yam lag luam.
Lub sijhawm tshaj tawm: Lub Rau Hli-01-2022
