propylene oxideyog ib yam tseem ceeb ntawm cov organic chemical raw khoom thiab nruab nrab.Nws yog tsuas yog siv nyob rau hauv lub synthesis ntawm polyether polyols, polyester polyols, polyurethane, polyether amine, thiab lwm yam, thiab yog ib qho tseem ceeb raw khoom rau kev npaj ntawm polyester polyols, uas yog ib qho tseem ceeb feem ntawm high-kev ua tau zoo polyurethane.propylene oxide kuj tseem siv los ua cov khoom siv raw rau kev npaj ntau yam surfactants, tshuaj, tshuaj ua liaj ua teb, thiab lwm yam, thiab yog ib qho tseem ceeb raw khoom rau kev lag luam tshuaj.

Propylene oxide yog tsim los ntawm oxidation ntawm propylene nrog ib tug catalyst.Cov khoom siv raw propylene yog tov nrog compressed cua thiab dhau los ntawm lub reactor uas muaj catalyst.Cov tshuaj tiv thaiv kub yog feem ntau 200-300 DEG C, thiab lub siab yog li 1000 kPa.Cov khoom siv tshuaj tiv thaiv yog cov khoom sib xyaw uas muaj propylene oxide, carbon dioxide, carbon monoxide, dej thiab lwm yam sib xyaw.Cov catalyst siv nyob rau hauv cov tshuaj tiv thaiv no yog ib qho kev hloov pauv hlau oxide catalyst, xws li nyiaj oxide catalyst, chromium oxide catalyst, thiab lwm yam. Cov kev xaiv ntawm cov catalysts rau propylene oxide yog qhov siab, tab sis cov kev ua haujlwm tsawg.Tsis tas li ntawd, lub catalyst nws tus kheej yuav deactivated thaum lub sij hawm cov tshuaj tiv thaiv, yog li nws yuav tsum tau regenerated los yog hloov tsis tu ncua.

Kev sib cais thiab kev ua kom huv ntawm propylene oxide los ntawm cov tshuaj tiv thaiv sib tov yog cov kauj ruam tseem ceeb hauv kev npaj.Txoj kev sib cais feem ntau suav nrog kev ntxuav dej, distillation thiab lwm cov kauj ruam.Ua ntej, cov tshuaj tiv thaiv sib xyaw yog ntxuav nrog dej kom tshem tawm cov khoom tawg qis xws li cov propylene thiab carbon monoxide uas tsis muaj kev cuam tshuam.Tom qab ntawd, qhov sib tov yog distilled kom cais cov propylene oxide los ntawm lwm cov khoom kub boiling.Yuav kom tau txais high-purity propylene oxide, ntxiv cov purification cov kauj ruam xws li adsorption los yog extraction tej zaum yuav xav tau.

Feem ntau, kev npaj ntawm propylene oxide yog cov txheej txheem nyuaj, uas yuav tsum tau muaj ntau cov kauj ruam thiab kev siv lub zog siab.Yog li ntawd, txhawm rau txo tus nqi thiab kev cuam tshuam ib puag ncig ntawm cov txheej txheem no, nws yog ib qho tsim nyog yuav tsum ua kom tsis tu ncua kev txhim kho thev naus laus zis thiab khoom siv ntawm cov txheej txheem.Tam sim no, kev tshawb fawb ntawm cov txheej txheem tshiab rau kev npaj propylene oxide feem ntau yog tsom rau cov txheej txheem ib puag ncig nrog kev siv hluav taws xob tsawg thiab kev ua haujlwm siab, xws li catalytic oxidation siv molecular oxygen li oxidant, microwave-pab oxidation txheej txheem, supercritical oxidation txheej txheem, thiab lwm yam. , kev tshawb fawb txog cov catalysts tshiab thiab cov kev sib cais tshiab kuj tseem ceeb heev rau kev txhim kho cov txiaj ntsig thiab purity ntawm propylene oxide thiab txo cov nqi tsim khoom.