Boiling point ntawm toluene: ib qho kev pom rau hauv cov tshuaj no
Toluene, raws li cov khoom siv dav siv hauv kev lag luam tshuaj, ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw nrog nws cov khoom tshwj xeeb. Lub boiling point ntawm toluene yog ib qho tseem ceeb parameter uas yuav tsum tau tshwj xeeb mloog nyob rau hauv industrial ntau lawm thiab kev siv. Kev nkag siab txog qhov kub ntawm toluene tsis yog tsuas yog qhia rau nws qhov chaw cia thiab thauj, tab sis kuj tseem ceeb heev rau kev tswj qhov kub thiab txias thaum muaj ntau yam tshuaj tiv thaiv.
Txheej txheem cej luam ntawm lub hauv paus zog thiab boiling point ntawm toluene
Toluene yog ib qho xim tsis muaj xim, muaj ntxhiab tsw ntxhiab nrog cov tshuaj formula C₇H₈. Nws yog dav pom nyob rau hauv cov xim, coatings, thinners thiab adhesives thiab kuj yog siv los ua ib qho hnyav hnyav. Ntawm atmospheric siab, lub boiling point ntawm toluene yog 110.6 ° C. Qhov taw tes qis qis no tso cai rau cov toluene evaporate yooj yim ntawm chav tsev kub, yog li kev saib xyuas tshwj xeeb yuav tsum tau them rau nws cov volatility thiab muaj peev xwm vapor txaus ntshai thaum ua haujlwm.
Cov yam ntxwv cuam tshuam rau lub boiling point ntawm toluene
Txawm hais tias qhov kub ntawm toluene yog 110.6 ° C ntawm atmospheric siab, qhov ntsuas no yuav cuam tshuam los ntawm ntau yam hauv kev siv tswv yim. Piv txwv li, kev hloov hauv siab tuaj yeem cuam tshuam ncaj qha rau qhov kub ntawm toluene. Raws li txoj cai roj, qhov kub ntawm cov kua dej nce thaum lub siab nce; conversely, nws ntog thaum lub siab txo. Qhov no tshwm sim yog dav siv nyob rau hauv industrial distillation thiab rectification txheej txheem los optimize zog noj thiab tawm los nyob rau hauv cov txheej txheem sib cais.
Purity kuj yog ib qho tseem ceeb uas cuam tshuam rau qhov kub ntawm toluene. Hauv kev tsim khoom lag luam, toluene feem ntau muaj lwm yam impurities, uas tuaj yeem ua rau muaj kev hloov pauv me ntsis hauv qhov kub kub ntawm toluene. Yog li ntawd, kev nkag siab thiab tswj cov purity ntawm toluene yog ib qho tseem ceeb heev kom tau txais nws cov boiling point.
Toluene boiling point hauv kev lag luam
Hauv kev tsim tshuaj lom neeg, qhov kub ntawm toluene feem ntau yog siv los txiav txim siab lub sijhawm kub ntawm nws cov evaporation thiab condensation, uas yog qhov tseem ceeb tshwj xeeb rau kev sib cais xws li distillation thiab rectification. Piv txwv li, hauv kev lag luam petrochemical, toluene feem ntau yog siv los ua khoom noj rau kev tsim cov tshuaj tseem ceeb xws li benzene, methanol thiab xylene. Los ntawm kev tswj qhov kub thiab txias hauv lub reactor kom toluene evaporates thiab condenses nyob rau hauv qhov kub thiab txias, qhov kev xaiv thiab tawm los ntawm cov tshuaj tiv thaiv tuaj yeem txhim kho.
Paub txog qhov kub ntawm toluene kuj tseem ceeb heev rau nws qhov chaw ruaj ntseg thiab kev thauj mus los. Vim hais tias toluene yog volatile thiab flammable, nws yuav tsum tau khaws cia nyob rau hauv ib tug tsawg-kub ib puag ncig thaum lub sij hawm cia, thiab kev sib cuag nrog oxidising cov neeg ua hauj thiab lwm yam khoom uas muaj kev phom sij yuav tsum raug zam kom tsis txhob tawg los yog hluav taws kub.
Cov ntsiab lus
Toluene ua ib qho tseem ceeb ntawm cov khoom siv raw, qhov kub ntawm toluene yog qhov tseem ceeb ntawm nws daim ntawv thov kev lag luam. Los ntawm kev nkag siab tob txog qhov kub ntawm toluene thiab nws cov yam ntxwv cuam tshuam, nws tus cwj pwm hauv cov txheej txheem tsim khoom tuaj yeem ua tau zoo dua thiab cov txheej txheem cuam tshuam tuaj yeem ua kom zoo txhawm rau txhawm rau txhim kho kev tsim khoom thiab kev nyab xeeb.