Hexane, heptane, pentane, octane lwm tus neeg thiab manufacturers hauv Suav teb
Lub distillation ntau yam ntawm cov khoom siv roj av muaj feem xyuam nrog cov ntsiab lus ntawm cov khoom siv. Yog hais tias qhov distillation ntau tau raws li qhov yuav tsum tau ntawm cov khoom lag luam cov qauv, nws qhia tau hais tias cov ntsiab lus ntawm cov khoom siv tau raws li qhov yuav tsum tau siv, thiab cov distillation ntau yog ib qho ntawm cov ntsuas zoo.
Thaum pib kub: Thaum thawj tee ntawm condensate poob los ntawm qhov kawg ntawm lub condenser raj, tus pas ntsuas kub nyeem ntawv tau pom tam sim ntawd.
Qhuav point: Qhov kawg poob ntawm cov kua uas ntws tawm ntawm lub condenser tib lub sij hawm raws li cov kua nyob rau hauv lub distillation flask evaporates instantaneously. Lub sijhawm no, ntsuas ntsuas ntsuas ntsuas ntsuas tam sim ntawd. Txawm li cas los xij, nws tsis suav nrog cov tee dej los yog cov yeeb yaj kiab ua kua rau ntawm phab ntsa ntawm lub khob distillation lossis ntawm cov ntsuas kub.
Nws yuav tsum tau hais tias qhov chaw qhuav tsis yog qhov kawg boiling point, thiab qhov kawg boiling point yog qhov kub siab tshaj plaws, uas tshwm sim tom qab tag nrho cov kua nyob rau hauv qab ntawm lub distillation flask tau evaporated.
Nws tseem yuav tsum tau hais txog tias tag nrho cov khoom siv roj hnyav yog nyob ntawm cov chaw qhuav.
Residue: Thaum qhuav, qhov seem uas tsis distilled yog hu ua residue.
Distillation ntau yam: Qhov kub ntawm qhov pib boiling point mus rau qhov qhuav point los yog qhov kawg boiling point, hu ua lub distillation ntau.
Lub boiling point tsis yog qhov pib boiling point, thiab lub boiling point yog kub thaum lub sij hawm boiling.
Lub boiling ntau kuj tsis yog lub distillation ntau, thiab lub boiling ntau yam yog kub txwv ntawm boiling. Tsuas yog tom qab boiling, chav yog tsim los distilled cov khoom sib cais, yog li cov distillation ntau yog siab tshaj qhov boiling ntau yam, thiab lub sab sauv txwv ntawm lub boiling ntau thiab qhov tsawg kawg nkaus txwv ntawm distillation ntau yog coincident. Tsuas yog lub tswv yim ntawm cov ntaub ntawv ntshiab kuj tuaj yeem hloov tau.
Decomposition point: Tus pas ntsuas kub nyeem ntawv sib raug rau cov cim pib ntawm thermal decomposition nyob rau hauv cov kua hauv distillation flask.
Feem pua ntawm kev rov qab los: Feem pua ntawm cov ntim condensate pom nyob rau hauv lub tog raj kheej tau txais thaum saib tus pas ntsuas kub nyeem ntawv.
Percent Residue: Qhov ntim feem pua ntawm cov roj seem nyob hauv lub khob tom qab lub khob distillation tau txias.
Qhov siab tshaj plaws rov qab feem pua: Vim tias qhov kev txiav tawm ntxov ntawm distillation ntawm qhov decomposition point, qhov feem pua rov qab tau zoo ntawm cov kua ntim tau raug kaw.
Cov feem pua ntawm tag nrho cov nyiaj rov qab: Qhov sum ntawm qhov siab tshaj plaws rov qab feem pua thiab qhov seem seem.
Qhov feem pua evaporation: Qhov sum ntawm feem pua rov qab thiab feem pua poob.
Lub teeb tivthaiv poob: Hais txog qhov poob ntawm cov qauv xa tawm los ntawm lub tog raj kheej tau txais mus rau lub distillation flask, evaporation poob ntawm cov qauv thaum lub sij hawm distillation, thiab cov qauv unvaporized vapor poob nyob rau hauv lub distillation flask thaum kawg ntawm distillation.