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mwwXaiv lus

Kev sib piv ntawm qhov sib txawv ntawm ntau theem countercurrent extraction thiab nruam countercurrent extraction

Feb 23, 2024

Tso lus

Hauv tshuaj lom neeg, lub zog, mining thiab lwm yam kev lag luam tsim khoom, kev ua haujlwm ntawm kev sib cais ua kua sib tov yog feem ntau koom nrog, nyob rau hauv uas cov kua ua kua (extraction agent) uas yog insoluble los yog ib nrab miscible nrog cov kua sib tov (sib tov kua) muab cais ntxiv rau. tsim nyob rau hauv ib tug ob-theem system, kev ua hauj lwm nyob rau hauv uas ntau soluble Cheebtsam (solutes) nkag mus rau hauv lub hnyav theem (extraction phase) kom ua tiav kev sib cais yog hu ua kua-kua extraction los ntawm kev noj kom zoo dua ntawm qhov sib txawv ntawm kev faib ntawm txhua yam nyob rau hauv lub sib tov kua ntawm ob theem.

 

Txhawm rau txhim kho cov txiaj ntsig zoo ntawm cov khoom lag luam, feem ntau cov kua-kua extractions hauv kev tsim khoom siv tau txais kev ua haujlwm tam sim no. Counter-tam sim no extraction hom yuav muab faib ua multi-theem counter-tam sim no extraction thiab nruam counter-tam sim no extraction.

 

1. Multi-theem counter-tam sim no extraction yog dab tsi? Cov cuab yeej siv ntau theem counter-tam sim no rho tawm feem ntau suav nrog?

Kev sib xyaw thiab nthuav cov tso tsheb hlau luam thiab cov centrifugal extractors yog cov khoom siv ntau theem countercurrent extraction. Lub hauv paus ntsiab lus yog tias lub teeb thiab hnyav theem nyob rau hauv txhua theem ntawm cov khoom siv extraction ua tiav theem sib npaug kom ntau li ntau tau los ntawm kev sib koom ua ke tam sim no, thiab tom qab ntawd tom qab theem sib cais, lawv nkag mus rau ob theem ntawm cov khoom siv extraction ua ntej thiab tom qab cov khoom siv hauv cov khoom siv. rov qab kev taw qhia. Yog li ntawd, nyob rau hauv ib tug multi-theem txheej txheem extraction, lub extraction efficiency tuaj yeem txhim kho los ntawm kev nce tus naj npawb ntawm cov theem kom ua tiav lub hom phiaj yield.

 

2. Dab tsi yog qhov kev rho tawm tsis tu ncua tam sim no? Dab tsi ntawm cov cuab yeej rho tawm yog qhov raug rau kev sib txuas txuas ntxiv tam sim no?

Kem khoom xws li mem tes extraction kab yog cov khoom siv hluav taws xob txuas ntxiv mus. Nws lub hauv paus ntsiab lus yog tias lub teeb thiab hnyav theem nkag mus rau hauv cov khoom siv los ntawm sab sauv thiab qis kawg ntawm qhov sib npaug. Nyob rau hauv qhov kev txiav txim ntawm sab nraud quab yuam teb xws li lub ntiajteb txawj nqus los yog centrifugal quab yuam, lub teeb thiab hnyav theem ntws kuj countercurrently. Lub sijhawm no, cov theem dispersed yog dispersed rau hauv cov tee dej thiab turbulent los ntawm pulses los yog nplawm. Ua kom tiav qhov kev hloov pauv loj ntawm ob theem.