Koj yuav tsum paub txog lub raj mis distillation. Nws yog lub khob ntim rau cov kua distillation lossis fractionation. Nws feem ntau yog siv nrog lub condenser, cov yeeb nkab ua kua, los yog kua adapter. Nws tseem tuaj yeem nruab nrog lub tshuab hluav taws xob roj.
Kev ceev faj rau kev siv lub tshuab distillation.
Asbestos mesh yuav tsum tau muab tso rau thaum cua sov, los yog nws tuaj yeem ua kom sov los ntawm lwm cov da dej kub;
Thaum rhuab, cov kua dej tsis tshaj 1/2 ntawm qhov ntim.
Dab tsi yog qhov sib txawv tseem ceeb ntawm lub khob distillation thiab lub khob hauv qab?
Vim hais tias lub khob distillation yuav tsum tau siv rau fractionating kua, muaj ib tug nyias iav raj protruding me ntsis downward ntawm lub raj mis caj dab, uas yuav siv tau rau cov kua, thiab lub distillation flask yuav tsum tau thaiv lub raj mis lub qhov ncauj thaum nws rhuab, thiab lwm yam. tube yuav tsum protrude. Lub raj mis hauv qab tsis muaj cov cuab yeej no, thiab lub raj mis caj dab yog lub raj ncaj ncaj.
Tus nqi ntawm cov kua hauv lub distillation yog dab tsi?
Ntawm atmospheric distillation, cov kua uas muaj nyob rau hauv lub distillation flask yuav tsum tsis txhob ntau tshaj 2/3 ntawm nws ntim, los yog tsawg tshaj li 1/3;
Thaum rhuab, cov kua tsis tuaj yeem evaporated kom qhuav;
Thaum distilled nyob rau hauv lub siab txo, cov kua uas muaj yuav tsum tsis txhob ntau tshaj 1/2 ntawm nws ntim.
Txoj kev ntxuav ntawm distillation flask nyob rau hauv ob peb kis!
1. Kev sim tshuaj lom neeg
Nws tuaj yeem ntxuav nrog cov kuab tshuaj organic. Thaum ua cov organic synthesis, thaum ntxuav lub raj mis, tsis txhob siv nws yam tsis tau ntxuav. Nws yog qhov zoo tshaj plaws los kho nws ua ntej, thiab tom qab ntawd ntxuav nws nrog dej. Hauv kev sim cov organic, feem ntau muaj cov kuab tshuaj organic xws li cov khib nyiab ethanol, methanol, thiab chloroform, uas tuaj yeem rov ua dua tshiab rau hauv lub raj mis los tuav qee lub raj mis nyuaj.
2. Yuav ua li cas ntxuav lub raj mis distillation tom qab kev sim sulfur dioxide?
Tom qab kev sim tshuaj sulfur dioxide, nws yog ntxuav nrog ib tug alkaline aqueous tov (feem ntau yog ib tug tsawg concentration ntawm sodium hydroxide los yog ib tug dav concentration ntawm sodium carbonate), thiab ces yaug nrog dej distilled;
Qhia kom koj xaiv lub khob distillation!
Feem ntau, ntxiv rau lub distillation ntim ntawm qhov tsim nyog ntim raws li tus nqi ntawm cov kua distilled, nyob ntawm seb lub boiling ntau ntawm cov kua yuav tsum distilled, ib tug distillation flask muaj ib tug txawv ceg txoj hauj lwm yog xaiv kom tau ib tug zoo kev sim. nyhuv.
1. Rau lub distillation ntawm high-boiling kua, ib tug distillation flask nrog ib tug ceg yeeb nkab nyob rau hauv qis ib feem ntawm lub raj mis caj dab feem ntau xaiv, thiab cov hlau clip yuav tsum tau sandwiched nyob rau hauv lub Upper ib feem ntawm cov ceg yeeb nkab.
2. Rau cov distillation ntawm cov kua boiling tsawg, ib tug distillation flask nrog ib tug ceg yeeb nkab nyob rau hauv lub Upper ib feem ntawm lub raj mis caj dab feem ntau xaiv, thiab cov hlau clip yog sandwiched nyob rau hauv lub ceg yeeb nkab.
3. Rau lub distillation ntawm cov boiling point kua, ib tug distillation flask nrog ib ceg yeeb nkab nyob rau hauv nruab nrab ntawm lub raj mis caj dab yuav xaiv tau. Xav txog qhov smoothness ntawm cov cuab yeej thaum lub sij hawm distillation, cov hlau clip yuav tsum sandwiched nyob rau hauv lub ceg yeeb nkab. . .
Thaum kawg
Thaum boiling, nws yog ib qhov tsim nyog los ntxiv cov khoom boil-tawm xws li zeolite. Ntawm cov azeotropes no, ib lub chaw gasification tuaj yeem tsim tau, kom cov npuas tuaj yeem ua haujlwm tsis tu ncua thiab sib npaug sib npaug thaum cov tshuaj boiled, thiab tsis muaj kev sib tsoo tshwm sim. Qhov tshwm sim ntawm kev sib tsoo yog tias lub npuas loj dheev tshwm sim thiab cov tshuaj yuav maj tawm ntawm lub khob distillation, uas yog qhov txaus ntshai heev.
Yog tias koj xav tau cov ntaub ntawv los yog muaj kev tsis ntseeg, thov hu rau WUBOLAB, tus Laboratory glassware chaw tsim tshuaj paus.
