Kev hloov pauv catalytic yog txheej txheem tseem ceeb hauv kev lag luam roj av refining, feem ntau yog tsom rau kev txhim kho cov roj av zoo. Ntawm cov txheej txheem hloov kho ntau yam,Nruam Catalyst Regeneration(CCR) kev hloov kho sawv tawm vim nws cov txiaj ntsig thiab kev ua tau zoo hauv kev tsim cov roj av siab-octane. Ib qho tseem ceeb ntawm cov txheej txheem no yog kev hloov kho catalyst, uas ua lub luag haujlwm tseem ceeb hauv kev txhawb cov tshuaj lom neeg uas tsim nyog rau kev hloov cov naphtha rau hauv cov khoom siv roj av muaj txiaj ntsig.
Dab tsi yogCCR Reforming?
CCR kev hloov kho yog lub tshuab ua kom zoo niaj hnub uas tso cai rau kev rov tsim dua tshiab ntawm cov catalyst siv nyob rau hauv cov txheej txheem hloov kho. Txoj kev no sib piv nrog cov tsoos batch hloov kho, qhov twg cov catalyst raug tshem tawm ib ntus kom rov tsim dua tshiab. Hauv kev hloov kho CCR, cov catalyst tseem nyob hauv lub reactor, thiab cov kev tsim tawm tshiab tshwm sim nyob rau hauv ib chav tsev cais, tso cai rau kev ua haujlwm ruaj khov thiab ntau dua. Cov txheej txheem txuas ntxiv no tsis yog tsuas yog txhim kho cov txiaj ntsig ntawm high-octane roj av tab sis kuj txhim kho tag nrho cov txiaj ntsig ntawm kev ua kom zoo dua qub.
Lub luag haujlwm ntawm Catalysts hauv Reforming
Catalysts yog cov tshuaj uas ua kom cov tshuaj tiv thaiv tsis tau noj hauv cov txheej txheem. Hauv cov ntsiab lus ntawmKev hloov kho CCR, cov catalyst yog qhov tseem ceeb rau ntau qhov kev cuam tshuam, suav nrog dehydrogenation, isomerization, thiab hydrocracking. Cov kev cuam tshuam no hloov cov saw hlau ncaj nraim rau hauv cov saw hlau hydrocarbons, uas muaj cov kev ntsuas octane siab dua thiab xav tau ntau dua hauv cov qauv roj av.
Cov catalysts feem ntau siv hauv CCR hloov kho yog platinum-based catalysts, feem ntau txhawb nqa ntawm alumina. Platinum nyiam vim nws cov haujlwm zoo heev thiab kev xaiv hauv kev txhawb nqa cov kev xav tau. Tsis tas li ntawd, kev siv cov khoom siv bifunctional catalyst, uas sib txuas ob qhov chaw hlau thiab cov kua qaub, tso cai rau kev hloov pauv ntau dua ntawm naphtha rau hauv cov khoom siv high-octane. Cov chaw hlau ua kom yooj yim dehydrogenation, thaum cov chaw acids txhawb isomerization thiab hydrocracking.
Dab tsi Catalyst siv hauv Reformer?
Hauv kev hloov kho CCR, lubthawj catalystsiv feem ntau yog platinum-alumina catalyst. Cov catalyst no yog tsim los tiv thaiv cov xwm txheej hnyav ntawm cov txheej txheem hloov kho, nrog rau qhov kub thiab txias. Lub platinum tivthaiv yog lub luag haujlwm rau kev ua haujlwm catalytic, thaum lub alumina kev txhawb nqa muab cov qauv kev ruaj ntseg thiab thaj chaw rau qhov kev tshwm sim tshwm sim.
Ntxiv nrog rau platinum, lwm yam hlau xws li rhenium tuaj yeem raug ntxiv los txhim kho cov catalyst kev ua tau zoo. Rhenium tuaj yeem txhim kho cov catalyst tiv thaiv kom tsis txhob ua haujlwm thiab nce tag nrho cov txiaj ntsig ntawm high-octane roj av. Lub formulation ntawm cov catalyst tuaj yeem sib txawv nyob ntawm seb cov kev xav tau tshwj xeeb ntawm cov txheej txheem refining thiab cov khoom xav tau tshwj xeeb.
Xaus
Reforming catalysts, tshwj xeeb tshaj yog nyob rau hauv cov ntsiab lus ntawm kev hloov kho CCR, yog ib qho tseem ceeb rau kev tsim cov roj av zoo. Kev xaiv ntawm catalyst, feem ntau yog platinum-alumina formulation, cuam tshuam rau kev ua tau zoo thiab kev ua tau zoo ntawm cov txheej txheem hloov kho. Raws li qhov kev thov kom huv thiab muaj txiaj ntsig zoo dua ntxiv, kev nce qib hauv catalyst thev naus laus zis yuav ua lub luag haujlwm tseem ceeb hauv kev tsim cov roj av yav tom ntej. Nkag siab txog qhov tsis sib xws ntawm cov catalysts thiab lawv txoj haujlwm yog qhov tseem ceeb rau kev kho cov kws tshaj lij txhawm rau txhim kho lawv cov haujlwm thiab ua tau raws li kev xav tau ntawm kev lag luam.
Post lub sij hawm: Oct-31-2024