Nyob rau hauv ib qho kev tshawb fawb tshiab, cov kws tshawb fawb tau delved rau hauv kev ua tau zoo ntawm ntau yam molecular sieve hmoov nyob rau hauv lub cheeb tsam ntawm fume suppression. Kev tshawb nrhiav tau tsom mus rau ntau yam ntawm molecular sieves, suav nrog 3A, 5A, 10X, 13X, NaY, MCM-41-Al, thiab MCM-41-Si, txhawm rau txheeb xyuas lawv lub peev xwm los txo cov pa phem thaum lub sijhawm ua haujlwm.
Fume suppression yog ib qho kev txhawj xeeb tseem ceeb hauv ntau qhov kev lag luam, tshwj xeeb tshaj yog cov kev ua haujlwm kub kub xws li kev ua haujlwm hlau, vuam, thiab kev tsim tshuaj lom neeg. Kev tso pa tawm tuaj yeem ua rau muaj kev phom sij loj rau cov neeg ua haujlwm thiab ua rau muaj kuab paug ib puag ncig. Yog li ntawd, qhov xav tau rau txoj kev siv tshuaj tua kab mob tsis tau muaj zog ntau dua.
Molecular sieves yog cov ntaub ntawv crystalline nrog cov pore qhov ntau thiab tsawg uas tuaj yeem xaiv adsorb molecules raws li lawv qhov loj thiab cov duab. Cov cuab yeej tshwj xeeb no ua rau lawv cov neeg sib tw zoo tshaj plaws rau ntau yam kev siv, suav nrog kev sib cais roj, catalysis, thiab, raws li txoj kev tshawb no qhia, fume suppression. Cov kws tshawb fawb tau tshawb xyuas qhov kev ua tau zoo ntawm cov hmoov sib txawv molecular sieve hauv kev ntes thiab nruab nrab cov pa phem.
Txoj kev tshawb no pib nrog kev tshuaj xyuas tag nrho ntawm cov khoom ntawm cov xaiv molecular sieves. Lub 3A thiab 5A sieves, paub txog lawv lub peev xwm los adsorb me me molecules, tau sim nrog rau cov pore sieves loj, xws li 10X thiab 13X, uas tuaj yeem ua kom haum cov roj molecules loj dua. Lub NaY sieve, ib hom zeolite, kuj tau suav nrog vim nws qhov chaw siab thiab muaj peev xwm sib pauv ion. Tsis tas li ntawd, MCM-41 variants, MCM-41-Al thiab MCM-41-Si, tau raug xaiv rau lawv cov qauv mesoporous tshwj xeeb, uas muaj qhov sib txawv adsorption mechanism piv rau cov tsoos zeolites.
Cov theem kev sim muab kev koom tes rau cov molecular sieve hmoov rau ntau yam fume-generating txheej txheem, simulating tej yam kev mob feem ntau pom nyob rau hauv industrial chaw. Cov kws tshawb fawb tau ntsuas qhov ua tau zoo ntawm txhua lub sieve hauv kev ntes cov pa taws, tshuaj xyuas yam xws li lub peev xwm adsorption, tus nqi ntawm cov fume capture, thiab tag nrho cov txiaj ntsig ntawm kev txo qis hauv huab cua ntau ntawm cov tshuaj phem.
Cov txiaj ntsig ua ntej qhia tau hais tias kev ua haujlwm ntawm molecular sieves sib txawv heev raws li lawv cov qauv thiab cov qauv. Lub 3A thiab 5A sieves tau pom muaj peev xwm ua tau zoo hauv adsorbing me me fume hais, ua rau lawv tsim nyog rau cov ntawv thov uas muaj qhov cuam tshuam zoo. Piv txwv li, qhov loj pore sieves, tshwj xeeb tshaj yog 10X thiab 13X, ua tau zoo nyob rau hauv kev ntes cov roj molecules loj dua, qhia lawv cov peev xwm siv hauv cov txheej txheem uas tsim cov pa hnyav dua.
Lub NaY sieve tau nthuav tawm cov txiaj ntsig zoo tshaj plaws ntawm kev sib pauv ion, uas tsis yog tsuas yog txhim kho nws cov fume capture efficiency tab sis kuj tso cai rau qhov nruab nrab ntawm qee cov tshuaj lom. Cov yam ntxwv no ua rau NaY yog ib tus neeg sib tw ua tau zoo rau kev lag luam uas cuam tshuam nrog cov khoom siv phom sij, qhov twg ob qho tib si fume suppression thiab chemical neutralization yog qhov tseem ceeb.
MCM-41-Al thiab MCM-41-Si, nrog lawv cov qauv mesoporous tshwj xeeb, muaj kev sib txawv rau kev tawm tsam fume. Lawv qhov chaw siab saum npoo thiab qhov loj me me tunable tau tso cai rau kev xaiv adsorption ntawm cov khoom fume tshwj xeeb, ua rau lawv muaj ntau yam kev xaiv rau cov phiaj xwm tswj fume. Txoj kev tshawb no qhia txog lub peev xwm ntawm cov ntaub ntawv no hauv kev tsim cov tshuab pom zoo uas tuaj yeem hloov mus rau ntau yam kev xav tau ntawm kev lag luam.
Raws li kev tshawb fawb tau nce zuj zus, pab pawg kuj tau tshawb nrhiav cov peev txheej rov tsim dua tshiab ntawm cov molecular sieves. Lub peev xwm los kho cov peev txheej adsorptive ntawm sieves tom qab siv yog qhov tseem ceeb rau lawv cov kev siv tswv yim hauv kev lag luam. Txoj kev tshawb nrhiav pom tias feem ntau ntawm cov sieves sim tau tuaj yeem rov tsim kho tau zoo los ntawm kev kho cua sov, tso cai rau rov siv dua yam tsis muaj kev ua haujlwm loj.
Qhov cuam tshuam ntawm qhov kev tshawb fawb no txuas ntxiv tshaj li tsuas yog fume suppression. Los ntawm kev txheeb xyuas thiab ua kom zoo dua kev siv cov hmoov nplej molecular sieve, kev lag luam tuaj yeem txo lawv cov kev taw qhia ib puag ncig thiab txhim kho kev nyab xeeb ntawm chaw ua haujlwm. Cov kev tshawb pom pom tau hais tias kev sib koom ua ke cov ntaub ntawv no rau hauv cov txheej txheem tswj fume uas twb muaj lawm tuaj yeem ua rau muaj txiaj ntsig zoo dua thiab kev coj ua zoo.
Hauv kev xaus, qhov kev tshawb fawb tshiab no ua rau pom lub peev xwm ntawm molecular sieve hmoov ua cov neeg ua haujlwm zoo rau kev tawm tsam fume. Nrog rau lawv cov khoom tshwj xeeb thiab muaj peev xwm, sieves xws li 3A, 5A, 10X, 13X, NaY, MCM-41-Al, thiab MCM-41-Si muab cov kev cog lus zoo rau cov teeb meem tshwm sim los ntawm cov pa phem hauv cov txheej txheem kev lag luam. Raws li kev lag luam txuas ntxiv mus nrhiav kev ua haujlwm ruaj khov thiab muaj kev nyab xeeb, kev nkag siab tau txais los ntawm kev tshawb fawb no tuaj yeem ua txoj hauv kev rau kev txhim kho cov fume tswj thev naus laus zis uas tseem ceeb rau kev noj qab haus huv thiab kev tiv thaiv ib puag ncig. Kev tshawb fawb ntxiv thiab kev sib koom tes ntawm kev kawm thiab kev lag luam yuav yog qhov tseem ceeb los txhais cov kev tshawb pom no rau hauv cov kev siv tau zoo, thaum kawg pab ua kom muaj kev nyab xeeb thiab nyab xeeb hauv kev lag luam.
Post lub sij hawm: Dec-19-2024
