Microreactor lossis Micro Structured Reactor lossis Microchannel Reactor

Kev qhia luv luv ntawm Microreactor Technology

Microreactor thev naus laus zis yog cov thev naus laus zis tshiab los ntawm cov txheej txheem siv zog kom ua tiav cov tshuaj ntsuab ntsuab, tshwj xeeb tshaj yog rau kev npaj cov tshuaj zoo xws li tshuaj, tshuaj tua kab, tshuaj, micro-cov ntaub ntawv thiab nano-materials. Microreactor technology yog micro-chemical technology uas tau tshwm sim hauv xyoo 1990s. Nws tsis yog ib qho yooj yim txo qis ntawm cov reactor uas twb muaj lawm, tab sis yog ib qho ntawm cov txheej txheem tshiab uas ua ke nrog ntau yam khoom siv xws li cov cuab yeej siv tshuab, micro-fabrication technology, sensor technology thiab tswj technology. Microreactor yog ib hom tshiab ntawm miniaturized nruam ntws cov raj xa dej reactor nrog micron-scale cov qauv raws li cov tub ntxhais kom paub cov tshuaj tiv thaiv, sib tov, sib cais thiab lwm yam haujlwm. Lub "micro" ntawm lub microchannel reactor tsis yog hais txog qhov me me ntawm cov khoom siv microreactor lossis cov khoom me me tawm los, tab sis txhais tau hais tias cov dej ntws tawm ntawm lub micrometer lossis millimeter nplai. Cov txheej txheem microreaction yog hais txog cov txheej txheem tshuaj tiv thaiv uas tsim los ntawm cov khoom siv no. Lub microreaction system tseem hu ua micro-chemical system, uas yog micro-system rau cov txheej txheem tshuaj. Kev tsim thiab kev loj hlob ntawm microchemical system yog ua raws li lub tswv yim ntawm miniaturizing chemical khoom yam tsis muaj kev txo qis kev ua haujlwm ntawm cov cuab yeej siv, los ntawm kev ntxiv dag zog rau tus nqi thiab kev tswj cov dej ntws, sib tov thiab hloov cov txheej txheem hauv lub system, lub sijhawm ua tiav ntawm cov tshuaj tiv thaiv thiab kev sib cais yog luv luv, txo cov stagnation ntawm cov ntaub ntawv nyob rau hauv cov txheej txheem, txo qhov tsim ntawm by-products, kom paub txog cov ntsuab, kev nyab xeeb thiab zoo tshuaj. Microreactor thev naus laus zis tau dhau los ua ib qho ntawm cov lus qhia tseem ceeb hauv kev txhim kho cov txheej txheem tshuaj lom neeg siv dav hauv cov tshuaj, tshuaj tua kab, cov khoom siv tshuaj zoo thiab cov khoom siv nruab nrab.

Lub microreactor lossis microstructured reactor lossis microchannel reactor yog ib qho khoom siv uas muaj tshuaj lom neeg tshwm sim nyob rau hauv qhov chaw kaw nrog qhov ntev ntawm sab nraud hauv qab 1 hli; feem ntau hom ntawm xws li kaw yog microchannels. Microreactors tau kawm nyob rau hauv kev ua haujlwm ntawm micro txheej txheem engineering, ua ke nrog lwm cov khoom siv (xws li micro heat exchangers) uas cov txheej txheem ntawm lub cev tshwm sim. Microreactors koom nrog cov txheej txheem microfabricated kom tso cai rau kev ua haujlwm ntawm micron nplai. Lub microreactor feem ntau yog ib qho kev sib txuas txuas mus ntxiv (kev sib piv nrog / rau ib lub reactor batch). Microreactors muaj ntau yam zoo dua li cov qauv siv hluav taws xob, suav nrog kev txhim kho loj hauv kev siv hluav taws xob, kev ua haujlwm nrawm thiab tawm los, kev nyab xeeb, kev ntseeg siab, kev ua kom muaj zog, kev tsim khoom ntawm qhov chaw / ntawm qhov xav tau, thiab ntau qib zoo ntawm kev tswj cov txheej txheem.

Technical yam ntxwv ntawm Microreactor

• Cov cheeb tsam loj tshwj xeeb thiab cov cua kub hloov pauv tau zoo------Vim lub microstructure hauv micro reactor, nws thaj chaw tshwj xeeb yog qhov loj heev, uas tuaj yeem muaj ntau pua lossis ntau txhiab zaus ntawm thaj chaw tshwj xeeb ntawm lub nkoj agitating. Yog li ntawd , nws muaj cua sov zoo thiab huab hwm coj hloov chaw. Lub tshav kub pauv coefficient feem ntau yog tsawg kawg yog 25kW m − 2K − 1, uas tuaj yeem paub qhov sib xyaw ua ke tam sim ntawd thiab cov khoom siv hluav taws xob zoo.
• Kev hloov pauv huab cua siab thiab ceev cov tshuaj tiv thaiv ceev-------Lub microchannel reactor tuaj yeem muaj ntau lub microchannels, thiab cov roj thiab cov kua dej hauv microchannels tuaj yeem dhau mus nrog 10-4 mus rau 10-6m / s, Kev sib xyaw cov txheej txheem ntawm cov kua dej tuaj yeem paub qhov sib xyaw ua ke ntawm cov khoom siv tam sim ntawd, thiab ua kom cov tshuaj tiv thaiv ntawm cov tshuaj tiv thaiv zoo tib yam Lub sij hawm raug txo los ntawm cov xuab moos - kaum teev mus rau vib nas this - feeb thiab siab dhau los ua tiav.
• Kev tswj xyuas qhov kub thiab txias thiab lub sij hawm los txhim kho cov txiaj ntsig zoo -------Qhov zoo tshaj plaws hloov pauv cov yam ntxwv ntawm lub microreactor tso cai rau cov tshuaj tiv thaiv kub kom tswj tau nyob rau hauv ib qho chaw, uas yog qhov tseem ceeb rau qee qhov kev cuam tshuam nrog cov khoom nruab nrab thiab thermally tsis ruaj khov. cov khoom hauv cov tshuaj zoo. Cov reactants ntws tsis tu ncua nyob rau hauv microchannel reactor Lub sij hawm nyob ntawm cov ntaub ntawv raw nyob rau hauv cov tshuaj tiv thaiv tej yam kev mob yuav precisely tswj. Thaum lub sij hawm zoo tshaj plaws cov tshuaj tiv thaiv tau mus txog, nws yog tam sim ntawd dhau mus rau cov kauj ruam tom ntej los yog cov tshuaj tiv thaiv raug txiav, uas muaj peev xwm tshem tawm cov by-products generated vim lub sij hawm ntev cov tshuaj tiv thaiv thiab txhim kho cov yield.
• Cov dej tuav tsawg dua, muaj kev nyab xeeb dua thiab zoo ib puag ncig rau kev tsim khoom tas mus li -------Vim tias qhov kub hloov pauv ntawm microreactor zoo, cov tshuaj tiv thaiv kub yuav tsis sib sau ntau dhau thiab raug tswj kom raug nyob rau hauv qee qhov ntau, uas tuaj yeem txo qhov kev pheej hmoo. ntawm tawg. Microreactors feem ntau ua haujlwm tsis tu ncua, tus nqi ntawm cov reactants hauv microreactor tsawg heev. Qhov no tso cai rau kev ua haujlwm tom qab ntawm cov khoom nruab nrab tsis ruaj khov thiab zam kev ua haujlwm batch qeeb qeeb. Lub sij hawm nyob ntawm qhov nruab nrab tsis ruaj tsis khov yog luv heev thiab yuav tsis lwj, txawm tias cov tshuaj tiv thaiv nruab nrab lossis cov khoom kawg yog cov tshuaj lom thiab cov teeb meem, Tsis tas li ntawd vim tias cov khoom tsim tawm ib lub sij hawm me me thiab lub sij hawm nyob hauv luv luv, qhov teeb meem. ntawm kev nyab xeeb kev huam yuaj raug txo kom ntau npaum li cas. Muaj ntau qhov kev tawm tsam exothermic uas tsis tuaj yeem pom tau hauv cov txheej txheem batch tab sis tuaj yeem pom tau hauv microreactors, txawm tias cov tshuaj tiv thaiv tseem ceeb xws li nitrification tuaj yeem ua tau zoo ntawm qhov kub thiab txias.
• Txawm hais tias lub microreactor tuaj yeem tsim cov tshuaj tsuas yog hauv cov khoom me me xwb, qhov ntsuas-txog rau cov khoom lag luam tsuas yog ib qho txheej txheem ntawm kev sib npaug ntawm cov microreactors. Hauv qhov sib piv, cov txheej txheem batch feem ntau ua tau zoo hauv chav kuaj tab sis ua tsis tiav ntawm batch pilot cog theem.
• Microreactor thev naus laus zis kuj tuaj yeem hloov kho lossis txo tus naj npawb ntawm micro-reactor modules hauv lub kaw lus raws li kev hloov pauv hauv kev lag luam, kom paub txog lub sijhawm, ntawm qhov chaw thiab kev tsim khoom.
• Micro-processing thev naus laus zis tuaj yeem siv los ua ke nrog kev sib xyaw ntawm micro-sensors, micro-reaction, micro-heat exchange, micro-separation, micro-analysis thiab lwm yam kev ua haujlwm hauv chav tsev thiab sib piv micro-sensors, micro-valve thiab lwm yam khoom siv rau hauv lub platform lossis txawm. lub nti tswj kom paub txog platformization Los yog chip-based multi-functional ua haujlwm, thiaj li ua tiav kev soj ntsuam ntawm lub sijhawm tiag tiag thiab kev txawj ntse tswj ntawm micro-reaction system, txhim kho cov tshuaj tiv thaiv ceev, thiab txuag cov nqi tshuaj tiv thaiv tib lub sijhawm.

Hom Cov Teeb Meem Zoo haum rau Microreactors

Txog tam sim no, ntau lub hom phiaj microreactor tseem txwv rau homogeneous cov tshuaj tiv thaiv, thiab rau qee qhov, nws tsuas yog txwv rau cov roj-kua theem thiab cov kua-kua theem cov tshuaj tiv thaiv. Raws li kev txheeb cais, kwv yees li 30 feem pua ​​​​ntawm cov tshuaj tiv thaiv zoo tuaj yeem nqa tawm hauv microreactors los txhim kho cov txiaj ntsig, kev xaiv lossis kev nyab xeeb. Qhov zoo ntawm microreactor feem ntau yog tshwm sim hauv cov nram qab no cov tshuaj tiv thaiv:

• Cov tshuaj tiv thaiv exothermic hnyav heev-------Rau qhov kev tawm tsam exothermic hnyav, cov txheej txheem reactor feem ntau siv cov txheej txheem ntawm gradual dropwise ntxiv lossis batch ntxiv. Txawm li cas los xij, tseem yuav muaj cua sov hauv zos thiab qee qhov ntawm cov khoom lag luam yuav raug tsim tawm. Vim tias qhov zoo ntawm cov cua sov hloov pauv ntawm lub microreactor, qhov ntsuas kub ntawm cov tshuaj tiv thaiv tuaj yeem tswj tau qhov tseeb, cov cua sov hauv zos tuaj yeem raug tshem tawm, thiab tuaj yeem txhim kho cov khoom lag luam zoo thiab kev xaiv.
• Cov tshuaj tiv thaiv tsis ruaj khov los yog cov khoom lag luam------Qee cov tshuaj reactants lossis cov khoom lag luam tsis ruaj khov heev thiab yuav decompose thiab txo cov txiaj ntsig ntawm cov khoom tom qab lub sijhawm nyob. Lub microreactor system yog qhov txuas txuas ntxiv, thiab lub sijhawm nyob ntawm cov tshuaj tiv thaiv tuaj yeem tswj tau raug. Yog li ntawd, lub decomposition vim qhov instability ntawm reactants los yog cov khoom nyob rau hauv cov pa reactor yuav zam tau.
• Cov tshuaj tiv thaiv sai nrog cov kev cai nruj ntawm qhov piv ntawm cov tshuaj reactants------Qee cov tshuaj tiv thaiv muaj cov kev cai nruj ntawm qhov piv ntawm cov reactants, thiab ntau dhau ntawm ib qho ntawm cov reactants yuav ua rau muaj kev cuam tshuam, xws li cov tshuaj tiv thaiv mono-hloov pauv, yuav muaj ob-substituted thiab trisubstituted khoom yog tsim. Lub microreactor system tuaj yeem ua tiav qhov sib xyaw ua ke tam sim ntawd, uas zam qhov teeb meem ntawm cov khoom hauv zos ntau dhau ntawm txhua qhov reactant thiab txo cov khoom lag luam.
• Kev phom sij tshuaj lom neeg thiab kub siab & kev kub ntxhov siab ------Qee cov tshuaj tiv thaiv uas yooj yim tawm ntawm kev tswj, ib zaug tawm ntawm kev tswj, yuav ua rau cov tshuaj tiv thaiv kub thiab siab nce siab, cov reactants yuav xuas nrig ntaus txawm tawg. Vim tias cov tshuaj tiv thaiv tshav kub tuaj yeem xa tawm sai, thiab cov microreactor yog cov tshuaj tiv thaiv tsis tu ncua, cov tshuaj hauv online muaj tsawg heev, yog li kev nyab xeeb ntawm cov tshuaj tiv thaiv yog lav hauv microreactors.

Tau kawg, tsis yog txhua qhov kev cuam tshuam yog tsim nyog rau cov tshuab microreactor, xws li cov tshuaj tiv thaiv ua kua qeeb heev, cov tshuaj tiv thaiv tsis muaj exothermic thiab endothermic phenomena thiab cov txheej txheem ib txwm muaj twb muaj kev xaiv siab thiab tawm los.

Daim ntawv thov Pitfalls ntawm Microreactors

• Txawm hais tias muaj cov reactors tsim los tuav cov khoom, microreactors feem ntau tsis zam cov khoom zoo, feem ntau clogging.Clogging tau raug txheeb xyuas los ntawm ib tug xov tooj ntawm cov kws tshawb fawb raws li qhov teeb meem loj tshaj plaws rau microreactors[8] tau txais dav los ua ib qho txiaj ntsig zoo rau batch reactors.
• Mechanical twj tso kua mis tuaj yeem tsim kom muaj lub zog pulsating uas tuaj yeem ua rau tsis zoo. Kev ua haujlwm ntau tau mob siab rau kev txhim kho cov twj tso kua mis uas tsis tshua muaj zog.A nruam ntws daws yog electroosmotic flow (EOF).
• Corrosion imposes qhov teeb meem loj nyob rau hauv microreactors vim hais tias cheeb tsam rau ntim piv yog siab. Kev degradation ntawm ob peb µm yuav mus tsis pom nyob rau hauv cov hlab ntsha. Raws li ib txwm sab hauv qhov ntev ntawm cov channel yog nyob rau hauv tib qhov kev txiav txim ntawm qhov loj, cov yam ntxwv yuav raug hloov pauv loj.
• Txawm hais tias microreactor sysytem tuaj yeem ntsuas-txog rau cov khoom lag luam los ntawm kev sib faib cov naj npawb ntawm microreactors thiab tuaj yeem txo tus nqi, tab sis kev ua haujlwm ntawm microreaction system kuj tseem txwv. Thaum lub sij hawm tus naj npawb ntawm microreactors tau nce zoo heev, qhov nyuaj ntawm microreaction xyuas thiab tswj qhov system kuj tau nce ntau, thiab kev nqis peev thiab kev lag luam tus nqi rau kev tsim khoom tiag kuj tseem nce ntxiv.

Daim ntawv thov

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