propylene oxide yog ib yam khoom tseem ceeb ntawm cov khoom siv raw thiab cov khoom nruab nrab, uas yog siv dav hauv kev tsim cov polyether polyols, polyester polyols, polyurethane, polyester, plasticizers, surfactants thiab lwm yam lag luam. Tam sim no, kev tsim cov propylene oxide feem ntau muab faib ua peb hom: tshuaj synthesis, enzyme catalytic synthesis thiab lom fermentation. Peb txoj kev muaj lawv tus kheej yam ntxwv thiab daim ntawv thov scope. Hauv daim ntawv no, peb yuav txheeb xyuas qhov xwm txheej tam sim no thiab kev txhim kho ntawm propylene oxide ntau lawm tshuab, tshwj xeeb tshaj yog cov yam ntxwv thiab qhov zoo ntawm peb hom kev tsim khoom, thiab sib piv cov xwm txheej hauv Suav teb.

Ua ntej ntawm tag nrho cov, cov txheej txheem tshuaj synthesis ntawm propylene oxide yog ib txwm siv, uas muaj qhov zoo ntawm cov cuab yeej paub tab, txheej txheem yooj yim thiab tus nqi qis. Nws muaj keeb kwm ntev thiab dav daim ntawv thov kev cia siab. Tsis tas li ntawd, cov txheej txheem tshuaj synthesis kuj tseem siv tau rau kev tsim cov khoom siv tshuaj tseem ceeb thiab cov khoom nruab nrab, xws li ethylene oxide, butylene oxide thiab styrene oxide. Txawm li cas los xij, txoj kev no kuj muaj qee qhov tsis zoo. Piv txwv li, cov catalyst siv nyob rau hauv cov txheej txheem yog feem ntau volatile thiab corrosive, uas yuav ua rau kev puas tsuaj rau cov khoom thiab ib puag ncig muaj kuab paug. Tsis tas li ntawd, cov txheej txheem tsim khoom yuav tsum tau siv ntau lub zog thiab cov khoom siv dej, uas yuav ua rau tus nqi ntau lawm. Yog li, txoj kev no tsis haum rau kev tsim khoom loj hauv Suav teb.

Qhov thib ob, enzyme catalytic synthesis txoj kev yog ib txoj kev tshiab tsim nyob rau hauv xyoo tas los no. Txoj kev no siv cov enzymes ua catalysts los hloov propylene rau hauv propylene oxide. Txoj kev no muaj ntau yam zoo. Piv txwv li, txoj kev no muaj kev hloov pauv siab thiab xaiv cov enzyme catalyst; nws muaj kuab paug tsawg thiab siv zog me me; nws tuaj yeem ua tau raws li qhov mob me me; nws tseem tuaj yeem tsim lwm cov ntaub ntawv tseem ceeb thiab cov khoom nruab nrab los ntawm kev hloov cov catalysts. Tsis tas li ntawd, txoj kev no siv biodegradable non-toxic compounds raws li cov tshuaj tiv thaiv cov kuab tshuaj los yog hnyav-dawb tej yam kev mob rau kev lag luam ruaj khov nrog txo kev cuam tshuam ib puag ncig. Txawm hais tias txoj kev no muaj ntau yam zoo, tseem muaj qee qhov teeb meem uas yuav tsum tau daws. Piv txwv li, tus nqi ntawm enzyme catalyst yog siab, uas yuav ua rau kom tus nqi ntau lawm; lub enzyme catalyst yog ib qho yooj yim rau inactivated los yog deactivated nyob rau hauv cov txheej txheem tshuaj tiv thaiv; Tsis tas li ntawd, txoj kev no tseem nyob rau hauv chav kuaj nyob rau theem tam sim no. Yog li ntawd, txoj kev no xav tau kev tshawb fawb thiab kev loj hlob ntxiv los daws cov teeb meem no ua ntej nws tuaj yeem siv rau kev tsim khoom lag luam.

Thaum kawg, txoj kev fermentation lom neeg kuj yog ib txoj kev tshiab tsim nyob rau hauv xyoo tas los no. Txoj kev no siv cov kab mob me me ua cov khoom siv los hloov propylene rau hauv propylene oxide. Txoj kev no muaj ntau yam zoo. Piv txwv li, txoj kev no tuaj yeem siv cov khoom siv txuas ntxiv dua tshiab xws li kev ua liaj ua teb pov tseg ua raw khoom; nws muaj kuab paug tsawg thiab siv zog me me; nws tuaj yeem ua tau raws li qhov mob me me; nws tseem tuaj yeem tsim lwm cov khoom siv tshuaj tseem ceeb thiab cov khoom nruab nrab los ntawm kev hloov cov kab mob. Tsis tas li ntawd, txoj kev no siv biodegradable non-toxic compounds raws li cov tshuaj tiv thaiv cov kuab tshuaj los yog hnyav-dawb tej yam kev mob rau kev lag luam ruaj khov nrog txo kev cuam tshuam ib puag ncig. Txawm hais tias txoj kev no muaj ntau yam zoo, tseem muaj qee qhov teeb meem uas yuav tsum tau daws. Piv txwv li, cov kab mob catalyst yuav tsum tau xaiv thiab tshuaj xyuas; kev hloov pauv thiab kev xaiv ntawm cov kab mob catalyst yog qhov tsawg; nws yuav tsum tau kawm ntxiv txog yuav ua li cas tswj cov txheej txheem tsis ua haujlwm kom ruaj khov thiab ua haujlwm siab; txoj kev no tseem xav tau kev tshawb fawb thiab kev txhim kho ntau ntxiv ua ntej nws tuaj yeem siv rau theem kev tsim khoom lag luam.

Hauv kev xaus, txawm hais tias cov txheej txheem tshuaj synthesis muaj keeb kwm ntev thiab kev siv dav dav, nws muaj qee qhov teeb meem xws li kev ua qias tuaj thiab kev siv hluav taws xob ntau. Enzyme catalytic synthesis method thiab biological fermentation method yog cov txheej txheem tshiab uas tsis muaj kuab paug thiab siv lub zog me me, tab sis lawv tseem xav tau kev tshawb fawb thiab kev loj hlob ntxiv ua ntej lawv tuaj yeem siv rau theem kev tsim khoom. Tsis tas li ntawd, txhawm rau ua kom tiav cov khoom loj ntawm propylene oxide nyob rau hauv Tuam Tshoj yav tom ntej, peb yuav tsum ntxiv dag zog rau R & D peev hauv cov txheej txheem no kom lawv tuaj yeem muaj kev lag luam zoo dua thiab kev cia siab ua ntej kev tsim khoom loj.