Phenolyog ib qho tseem ceeb heev cov organic chemical raw khoom, uas yog dav siv nyob rau hauv zus tau tej cov khoom ntawm ntau yam tshuaj, xws li plasticizers, antioxidants, curing agents, thiab lwm yam. Yog li ntawd, nws yog ib qho tseem ceeb heev rau masters siv technology ntawm phenol.Hauv tsab xov xwm no, peb yuav qhia txog kev tsim cov tshuab phenol kom ntxaws.

Kev npaj ntawm phenol feem ntau yog ua los ntawm reacting benzene nrog propylene nyob rau hauv lub xub ntiag ntawm catalysts.Cov txheej txheem tshuaj tiv thaiv tuaj yeem muab faib ua peb kauj ruam: thawj kauj ruam yog cov tshuaj tiv thaiv ntawm benzene thiab propylene los ua cumene;theem ob yog oxidation ntawm cumene los ua cumene hydroperoxide;thiab qhov thib peb kauj ruam yog qhov cleavage ntawm cumene hydroperoxide los tsim phenol thiab acetone.

Hauv thawj kauj ruam, benzene thiab propylene yog reacted nyob rau hauv lub xub ntiag ntawm ib tug acid catalyst los tsim cumene.Cov tshuaj tiv thaiv no yog ua los ntawm qhov kub ntawm li 80 txog 100 degrees Celsius thiab lub siab ntawm 10 txog 30 kg / cm2.Cov catalyst siv feem ntau yog txhuas chloride lossis sulfuric acid.Cov tshuaj tiv thaiv cov khoom yog cumene, uas yog cais los ntawm cov tshuaj tiv thaiv sib tov los ntawm distillation.

Hauv theem ob, cumene yog oxidized nrog huab cua nyob rau hauv lub xub ntiag ntawm cov kua qaub catalyst los tsim cumene hydroperoxide.Cov tshuaj tiv thaiv no yog nqa tawm ntawm qhov kub ntawm li 70 txog 90 degrees Celsius thiab lub siab ntawm 1 txog 2 kg / cm2.Cov catalyst siv feem ntau yog sulfuric acid los yog phosphoric acid.Cov tshuaj tiv thaiv cov khoom yog cumene hydroperoxide, uas yog cais los ntawm cov tshuaj tiv thaiv sib tov los ntawm distillation.

Nyob rau hauv lub thib peb kauj ruam, cumene hydroperoxide yog cleaved nyob rau hauv lub xub ntiag ntawm ib tug acid catalyst los tsim phenol thiab acetone.Cov tshuaj tiv thaiv no yog nqa tawm ntawm qhov kub ntawm li 100 txog 130 degrees Celsius thiab lub siab ntawm li 1 txog 2 kg / cm2.Cov catalyst siv feem ntau yog sulfuric acid los yog phosphoric acid.Cov khoom siv tshuaj tiv thaiv yog kev sib xyaw ntawm phenol thiab acetone, uas yog cais los ntawm cov tshuaj tiv thaiv sib xyaw los ntawm distillation.

Thaum kawg, kev sib cais thiab purification ntawm phenol thiab acetone yog ua los ntawm distillation.Txhawm rau kom tau txais cov khoom lag luam siab purity, cov kab ntawm cov kab distillation feem ntau yog siv rau kev sib cais thiab purification.Cov khoom kawg yog phenol, uas tuaj yeem siv rau kev tsim khoom ntawm ntau yam tshuaj.

Hauv cov ntsiab lus, kev npaj phenol los ntawm benzene thiab propylene los ntawm peb cov kauj ruam saum toj no tuaj yeem tau txais cov phenol purity siab.Txawm li cas los xij, cov txheej txheem no yuav tsum tau siv ntau cov kua qaub catalysts, uas yuav ua rau muaj kev cuam tshuam loj heev ntawm cov khoom siv thiab kev ua qias tuaj ib puag ncig.Yog li ntawd, qee qhov kev npaj tshiab tau tsim los hloov cov txheej txheem no.Piv txwv li, txoj kev npaj ntawm phenol siv biocatalysts tau maj mam siv hauv kev lag luam.