Qhov sib txawv tseem ceeb ntawm kev nqus thiab stripping yog qhov nqus tau yog kev hloov pauv ntawm atoms, molecules, lossis ions los ntawm ib qho khoom mus rau lwm qhov, whereas stripping yog kev hloov ntawm cov khoom ntawm cov kua mus rau lub vapor kwj.
Nyob rau hauv luv luv, nqus thiab stripping yog ob txheej txheem uas hloov cov khoom thiab cov khoom loj ntawm ib yam khoom mus rau lwm tus. Txawm li cas los xij, muaj qhov sib txawv ntawm kev hloov cov khoom siv thiab cov khoom siv loj uas ntes cov khoom no.
Kev nqus yog dab tsi?
Kev nqus yog cov txheej txheem tshuaj uas cov atoms, molecules lossis ions nkag mus rau theem ntau uas yog cov kua lossis cov khoom siv. Cov txheej txheem no txawv ntawm adsorption vim hais tias, nyob rau hauv adsorption, cov atoms, molecules, los yog ions adhere mus rau tej qhov chaw, whereas nyob rau hauv nqus, atoms, molecules los yog ions nkag mus rau hauv tej khoom. Txawm li cas los xij, lub sij hawm sorption npog ob qho tib si nqus thiab adsorption txheej txheem, nrog rau cov txheej txheem ion pauv.
Daim duab 01: Lub Chaw Haujlwm Absorber
txheej txheem nqus yog hais txog cov khoom raug ntes thiab hloov pauv ntawm lub zog. Hauv cov txheej txheem no, cov khoom siv loj uas ntes cov khoom yog absorbent, thiab cov khoom uas raug ntes yog absorbates. Ib yam li ntawd, hauv cov txheej txheem adsorption, cov ntsiab lus sib thooj yog adsorbent thiab adsorbate.
Muaj ntau hom kev nqus, xws li tshuaj lom neeg nqus thiab nqus lub cev. Kev nqus tshuaj lom neeg yog cov txheej txheem ua haujlwm, thaum lub cev nqus dej yog cov txheej txheem tsis ua haujlwm. Nyob rau hauv chemical absorption, lub absorbent reacts nrog lub absorbate. Cov tshuaj tiv thaiv no nyob ntawm qhov stoichiometry ntawm cov tshuaj tiv thaiv thiab cov concentration ntawm cov reactants. Hauv kev nqus ntawm lub cev, feem ntau piv txwv yog kev nqus dej los ntawm cov khoom siv hydrophilic. Qhov kev nqus no cuam tshuam nrog kev sib cuam tshuam ntawm cov dej thiab cov tshuaj hydrophilic.
Dab tsi yog stripping?
Striping yog cov txheej txheem tshuaj uas cov khoom raug tshem tawm ntawm cov kua los ntawm cov dej vapor. Thaum siv cov txheej txheem no hauv kev lag luam, cov kwj dej thiab cov vapor kwj tuaj yeem muaj qhov sib txuam tam sim no lossis countercurrent ntws. Feem ntau, cov txheej txheem stripping yog ua nyob rau hauv ib kem los yog tais.
Daim duab 02: Npuas Khaub Ncaws
Hauv txoj kev xav, stripping tshwm sim nyob ntawm kev hloov pauv loj. Cov txheej txheem no yog ib qho tseem ceeb hauv kev ua kom cov xwm txheej zoo rau cov khoom uas yuav raug xa mus rau theem vapor. Tsis tas li ntawd, cov txheej txheem no suav nrog kev sib txuas ntawm cov roj-kua uas yuav tsum tau hla los ntawm kev hloov cov khoom siv. Tag nrho cov khoom xa mus rau hauv vapor yog hu ua 'flux'.
Feem ntau, txheej txheem stripping yog ua nyob rau hauv cov tais yees (lub npe phaj kem) thiab cov kab ntim khoom. Nws yog tsis tshua muaj ua nyob rau hauv tshuaj tsuag yees, npuas kab, thiab centrifugal contactors. Ntawm lawv, cov tais yees muaj ib kab ntsug uas muaj cov kua dej ntws los ntawm sab saum toj mus rau hauv qab. Ntawm no, lub vapor kwj nkag los ntawm hauv qab thiab tawm los ntawm sab saum toj. Cov kab no muaj cov tais ntawm cov phaj uas tuaj yeem yuam cov kua ntws rov qab mus rau kab rov tav los ua kom cov kem ua haujlwm tau zoo.
Qhov txawv ntawm qhov nqus thiab stripping yog dab tsi?
Kev nqus thiab tshem tawm yog cov txheej txheem tshuaj tseem ceeb uas tau siv hauv kev lag luam. Qhov sib txawv tseem ceeb ntawm kev nqus thiab stripping yog qhov nqus tau yog kev hloov pauv ntawm cov atoms, molecules, lossis ions ntawm ib qho khoom mus rau lwm qhov, qhov stripping yog kev hloov ntawm cov khoom ntawm cov kua mus rau lub vapor kwj.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm kev nqus thiab stripping hauv daim ntawv tabular.
Summary – Absorption vs Stripping
Kev nqus thiab stripping yog ob txheej txheem uas hloov cov khoom ntawm ib yam mus rau lwm qhov. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm kev nqus thiab stripping yog qhov nqus yog cov txheej txheem uas hloov cov atoms, molecules, los yog ions los ntawm ib qho khoom mus rau lwm qhov, thaum stripping yog cov txheej txheem uas hloov cov khoom los ntawm cov kua mus rau lub vapor kwj.
