Dab tsi yog Mechanism ntawm Rotary Evaporation

Rotary evaporationyog ib qho kev sib cais thiab kev siv tshuab ntau. Los ntawm kev tso cov tshuaj rau hauv lub raj mis teb thiab txo qhov siab thaum cua sov, cov kuab tshuaj sai sai evaporates, yog li paub txog kev sib cais thiab concentration ntawm cov qauv. Nws mechanism feem ntau suav nrog cov hauv qab no:

1. Evaporation nyob rau hauv lub tshuab nqus tsev

Nyob rau hauv cov txheej txheem ntawm rotary evaporator, lub tshuab nqus tsev feem ntau yog tsim nyob rau hauv lub raj mis evaporation.

Nyob rau hauv lub tshuab nqus tsev, lub siab nyob rau hauv cov tshuaj rotary evaporator yog txo, uas yuav ua rau txo qis ntawm boiling point ntawm cov kuab tshuaj. Vim hais tias lub boiling point yog hais txog qhov kub thiab txias ntawm cov kua hloov mus rau hauv ib tug roj nyob rau hauv ib tug tej yam lub siab, thiab txo lub siab yog sib npaug zos rau txo lub zog pib rau cov kua los ua ib tug roj, uas ua rau cov kuab tshuaj ntau evaporation. Nyob rau hauv txoj kev no, txawm tias qhov kub thiab txias, qhov hnyav tuaj yeem evaporate sai, yog li paub txog cov concentration thiab kev sib cais ntawm cov qauv.

Nyob rau hauv lub tshuab nqus tsev, cov txheej txheem evaporation ntawm cov kuab tshuaj yog txwv tsis pub los ntawm kev sib tsoo ntawm intermolecular thiab qhov chaw nyob rau hauv cov roj theem dua li ntawm ambient atmospheric siab. Qhov no tuaj yeem txo qhov tsim cov roj-kua interface thiab ua rau nws nyuaj rau cov khoom tsis haum rau kev khiav mus rau saum huab cua, yog li tsis txhob poob ntawm cov qauv volatilization. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog rau cov qauv uas muaj zog volatility, uas tuaj yeem xyuas kom meej tias cov qauv yuav tsis ploj vim tsis muaj zog thaum lub sij hawm concentration.

2. Lub luag haujlwm ntawm lub zog centrifugal

Nyob rau hauv lub lab teb evaporator, centrifugal quab yuam yog inertial quab yuam generated los ntawm tig lub raj mis. Thaum cov tshuaj yog rhuab thiab evaporated nyob rau hauv lub rotating lub raj mis, vim lub high-ceev kev sib hloov ntawm lub raj mis, lub Cheebtsam nyob rau hauv cov tshuaj yog raug rau sab nraud centrifugal quab yuam, uas yuav ua rau lub teeb tseem ceeb Cheebtsam raug thawb mus rau lub thawv phab ntsa. , thaum cov khoom hnyav hnyav yog ze rau qhov nruab nrab ntawm lub thawv. Qhov kev sib cais no muaj txiaj ntsig zoo rau kev sib cais thiab sib sau ntawm cov hom phiaj thaum evaporation.

Lub luag haujlwm ntawm lub zog centrifugal hauv lubrotary evaporationtuaj yeem nkag siab raws li hauv qab no:

A. Kev sib cais: Vim yog lub zog centrifugal, cov khoom siv hauv cov tshuaj yuav qhia cov kev faib tawm sib txawv, thiab cov khoom siv lub teeb yuav raug thawb yooj yim dua rau hauv lub thawv ntim, thaum cov khoom hnyav hnyav yuav nyob ze rau qhov nruab nrab ntawm lub thawv. Qhov kev sib cais no muaj txiaj ntsig zoo rau kev sib cais thiab kev sib txawv ntawm cov khoom sib txawv hauv cov txheej txheem evaporation, kom cov khoom siv lub hom phiaj tuaj yeem sau tau yooj yim dua.

B. Accelerated evaporation: Nyob rau hauv qhov kev txiav txim ntawm lub zog centrifugal, cov khoom hauv cov tshuaj raug yuam kom tawg mus rau ntawm phab ntsa ntawm lub thawv, kom ntau qhov chaw ntawm lub tshuab nqus tsev nyob rau hauv cov xwm txheej ntawm cua sov, yog li accelerating evaporation ceev ntawm cov kuab tshuaj thiab kev txhim kho cov khoom. evaporation efficiency.

C. Txhim kho cov qoob loo: Lub zog centrifugal tuaj yeem pab mloog zoo rau cov hom phiaj ntawm lub thawv ntim, ua rau lawv yooj yim dua los khaws thiab rho tawm, yog li txhim kho cov txiaj ntsig ntawm cov hom phiaj tshuaj.

3. Kev ua cua sov

Nyob rau hauv tus txheej txheem ntawm evaporation, cov tshuaj yog rhuab los ntawm ib tug sab nraud cua sov qhov chaw, kom cov kuab tshuaj evaporates sai sai, yog li realizing lub concentration thiab sib cais ntawm cov qauv.

A. Tsawg kub evaporation: Rau qee cov qauv rhiab rau qhov kub thiab txias, qhov kub thiab txias evaporation yog ib qho kev xaiv. Evaporation feem ntau yog ua los ntawm chav tsev kub thiab 60 degree, xws li kev rho tawm ntawm qee cov olefin tebchaw, thiab cov dej da dej cua sov lossis cov cua sov sab nraud tuaj yeem siv tau.

B. Nruab nrab kub evaporation: Rau feem ntau cov qauv, qhov nruab nrab kub evaporation yog nqa tawm ntawm 40 degree thiab 80 degree. Lub evaporation ntawm cov organic solvents, xws li ethyl acetate, dimethylformamide, thiab lwm yam, tuaj yeem xaiv cov dej da dej cua sov lossis cov cua sov sab nraud.

C. High-kub evaporation: Qee cov kuab tshuaj organic uas nyuaj rau volatilize yuav tsum tau evaporated ntawm qhov kub siab dua, xws li cov kuab tshuaj kub npau npau los yog cov qauv khov, feem ntau ntawm 80 degree thiab 120 degree, thiab rhuab los ntawm roj da dej lossis hluav taws xob cua sov.

Cov txheej txheem ua haujlwm li qub ntawmrotary evaporation

1. Kev npaj: Ua ntej, muab cov tshuaj los yog sib tov los kho rau hauv lub raj mis evaporation ntawm cov evaporator teb, thiab nqa tawm pretreatment raws li xav tau, xws li lim los yog nplawm.

2. Pib qhov kev sib hloov: tig lub zog ntawm cov evaporator rotary thiab pib qhov kev sib hloov ntawm lub turntable. Lub rotating ceev ntawm rotating disk tuaj yeem hloov kho raws li qhov xav tau tiag tiag.

3. Cua sov: cov tshuaj nyob rau hauv lub teb evaporator yog rhuab mus rau lub evaporation kub los ntawm lub rhaub los yog ib tug rhuab da dej. Cov cua kub kub nyob ntawm qhov xwm txheej thiab cov kev xav tau ntawm cov tshuaj yuav tsum tau kho.

4. Evaporation: Raws li cov tshuaj yog rhuab, cov kuab tshuaj nyob rau hauv nws pib evaporate mus rau lub chav. Chav nkag mus rau hauv lub condenser los ntawm qhov hluav taws xob nyob rau sab saum toj ntawm lub raj mis evaporation.

5. Condensation: nyob rau hauv lub condenser, chav yog txias thiab hloov mus rau hauv cov kua, uas yog, condensed rau hauv cov kuab tshuaj zoo. Feem ntau, lub condenser siv qhov nruab nrab cua txias sab nraud (xws li cov dej txias) kom txo qhov kub ntawm lub raj phab ntsa thiab txhawb cov chav ua kom sov.

6. Rov qab: cov kua kua ua kua condensed yog sau rau hauv qab ntawm lub condenser thiab tuaj yeem rov qab tau thiab sib cais los ntawm cov khoom sib txuas. Cov kua rov qab tuaj yeem siv ntxiv rau hauv lwm cov txheej txheem lossis kev sim.

7. Thaum kawg ntawm kev ua haujlwm: thaum lubrotary evaporationtxheej txheem ua tiav, nres cua sov thiab kev sib hloov, thiab ntxuav thiab tswj cov cuab yeej tom qab lub kaw lus txias.

Peb tuaj yeem muab cov ntim sib txawv rotovap los ntawm 1L-50L nrog phau ntawv nqa lossis hluav taws xob nqa, thiab kuj muaj kev xaiv customized, thov hu rau peb ntawmsales@achievechem.com