Xylene Seperation

Xylene Seperation

XyleneKev cais tawm

Xylene sib cais feem ntau suav nrog cov hauv qab no:

Fractional Distillation:

Qhov no yog txoj kev tshaj plaws. Xylene raug cais los ntawm lwm cov hydrocarbons raws li qhov sib txawv ntawm cov ntsiab lus kub. Cov sib tov yog rhuab, thiab raws li qhov kub thiab txias, cov khoom sib txawv vaporize ntawm qhov kub sib txawv, tso cai rau kev sib cais.

Adsorption:

Cov txheej txheem adsorption tuaj yeem siv los cais cov xylene isomers los ntawm kev sib xyaw ntawm cov khoom siv uas xaiv adsorb qee cov isomers. Txoj kev no tuaj yeem ua tau zoo rau kev ua kom huv si xylene isomers.

Crystallization:

Txoj kev no tuaj yeem siv los cais cov para-xylene los ntawm kev sib tov. Los ntawm txias cov sib tov, para-xylene tuaj yeem crystallize, tso cai rau nws sib cais los ntawm ortho- thiab meta-xylene.

Kev rho tawm:

Cov kua-kua extraction kuj tuaj yeem ua haujlwm, qhov twg cov kuab tshuaj yog siv los xaiv yaj ib lossis ntau dua ntawm cov xylene isomers, ua kom yooj yim rau lawv sib cais.

Kev sib cais ntawm Membrane:

Cov txheej txheem siab tshaj plaws, xws li kev sib cais ntawm daim nyias nyias, tuaj yeem siv los cais cov xylene isomers raws li qhov loj me thiab molecular cuam tshuam.

Cov txheej txheem no raug xaiv los ntawm cov yam ntxwv xws li qhov xav tau purity, nplai ntawm kev tsim khoom, thiab kev xav txog nyiaj txiag.