Thaum ziab thiab adsorption ntawm noo noo, peb yuav xav txogMolecular SievethiabActivated Alumina. Dab tsi yog qhov txawv ntawm lawv? Yuav xaiv li cas?
- Qauv
Ob qho tib si activated alumina thiab molecular sieve yog cov khoom siv nrog siab porosity thiab siab dispersion, thiab ob qho tib si muaj ib qho chaw loj, tab sis qhov sib txawv ntawm activated alumina thiab molecular sieve tuaj yeem pom los ntawm kev faib tawm ntawm cov qauv pores.
Lub pore qauv faib ntawm activated alumina yog qhov tsis sib xws thiab tsis sib xws.
Molecular sieves muaj ntau cov channel nrog cov pore loj thiab cov txheej txheem zoo zoo hauv cov qauv. Raws li qhov sib txawv molecular ratios ntawm SiO2 thiab Al2O3, molecular sieves nrog txawv pore ntau thiab tsawg tau txais.
-Adsorption kev ua tau zoo
Activated alumina muaj qhov sib npaug ntawm qhov pore loj, yog li nws cov kev xaiv tsis zoo heev, tab sis nws muaj zog dua txhua yam ntau dua li molecular sieves, thiab tib lub sijhawm muaj qhov tshwj xeeb ntawm qhov chaw, thiab muaj qhov tshwj xeeb adsorption polarity rau dej, yog li nws yog siv nyob rau hauv niaj hnub industrial ntau lawm. Active oxidation feem ntau yog siv los ua desiccant, thiab tseem tuaj yeem siv los ua catalyst cab kuj, uas tuaj yeem ua rau cov catalyst muaj cov yam ntxwv ntawm kev ua haujlwm siab thiab kub tsis kam.
Lub adsorption thiab kev sib cais kev ua tau zoo ntawm molecular sieve nyob ntawm qhov loj ntawm qhov pores thiab pore ntim ntawm molecular sieve. Lub molecular sieve muaj ib tug uniform pore faib, uas ua rau cov xaiv adsorption kev ua tau zoo ntawm molecular sieve zoo dua li cov activated alumina. Lub adsorption ntawm molecular sieve yog txheej txheem ntawm kev hloov lub cev.
- Daim ntawv thov
Ua kom muaj aluminatuaj yeem hu ua industrial desiccant. Ntau tshaj 80 feem pua ntawm cov cua tshuab ziab khaub ncaws feem ntau siv hauv kev lag luam yog qhov pib ua haujlwm alumina, uas feem ntau tuaj yeem ncav cuag -40 degree . Molecular sieve tsuas yog siv thaum lub qhov tob kom qhuav yog qhov siab, thiab cov pa roj ntawm activated alumina desiccant tuaj yeem siv. Feem ntau: acetylene, cracking gas, coke cub gas, hydrogen, oxygen, cua, ethane, hydrogen chloride, propane, ammonia, ethylene, hydrogen sulfide, propylene, argon, methane, sulfur dioxide, carbon dioxide, natural gas, helium, nitrogen, chlorine thiab lwm yam.
Molecular sievemuaj zog hydrophilicity, vim hais tias nyob rau hauv industrial ntau lawm, tej zaum cov dej cov ntsiab lus ntawm cov roj yuav tsum tau tswj nyob rau hauv ib tug tsawg heev theem. Lub sijhawm no, qhov tob kom qhuav ntawm activated alumina tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Molecular sieve tuaj yeem siv rau hauv cov dej tsis tshua muaj dej. Tom qab ntawd adsorption yog nqa tawm ntawm qib ntawm molecular sieve, thiab qhov tob tob ntawm molecular sieve tuaj yeem ncav cuag -70 degree ~ -100 degree .
Qhov thib ob yog qhov txawv ntawm qhov adsorption tej yam kev mob ntawm ob. Tus nqi nqus dej ntawm activated alumina yog ntau dua li ntawm molecular sieve thaum cov roj noo cov ntsiab lus siab. Raws li cov xwm txheej zoo ib yam, molecular sieve tsis muaj qhov pom tseeb ntawm cov khoom siv alumina, uas yog tshwm sim los ntawm cov qauv molecular. , tab sis nyob rau theem qis ntawm cov ntsiab lus dej, nws yuav tsum tau txo los ntawm lwm qhov kev txiav txim ntawm qhov loj. Lub sijhawm no, qhov nqus dej ntawm molecular sieve muaj zog dua li ntawm activated alumina. Qhov tseeb, qee zaum peb tuaj yeem siv activated alumina thiab molecular sieve ua ke, uas tuaj yeem muab kev ua si tag nrho rau lawv cov kev muaj zog thiab siv lawv cov kev xav, uas tsis tsuas yog txuag nqi tab sis kuj ua tiav cov txiaj ntsig ntawm ob zaug.
Ua tsaug rau koj mloog.
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