Khoom noj khoom haus & dej haus Concentration
Cov zaub mov concentration txhais tau hais tias tshem tawm ib feem ntawm cov kuab tshuaj los ntawm cov zaub mov ua kua kom zoo dua qub, khaws cia thiab kev thauj mus los. Nws tuaj yeem raug categorized rau evaporation thiab khov concentration.
Evaporation Concentration
Evaporation ua haujlwm raws li qhov sib txawv ntawm qhov sib txawv ntawm cov kuab tshuaj thiab cov kuab tshuaj. Thaum lub volatility ntawm cov kuab tshuaj nyob rau hauv cov tshuaj me me thiab cov kuab tshuaj muaj volatility pom tseeb, cov kuab tshuaj yog vaporized los ntawm cua sov kom mloog zoo rau cov tshuaj. Cov zaub mov tov yuav tsum tau concentrated yog muab tso rau hauv ib lub evaporator thiab rhuab los ntawm ib tug sab nraud tshav kub qhov chaw. Raws li qhov kub thiab txias, cov kuab tshuaj (dej) hauv cov tshuaj yuav raug hloov mus rau hauv vapor, vim tias qhov kub ntawm cov dej yog qhov qis thiab nws yooj yim rau vaporize.
Thaum lub sij hawm evaporation txheej txheem, cov kuab tshuaj vapor khiav tsis tu ncua, thaum lub solute (xws li qab zib, protein, minerals, vitamins, pigments thiab lwm yam uas tsis yog-volatile los yog nyuaj-rau-volatile Cheebtsam) tseem nyob rau hauv cov tshuaj ntxiv vim nws kub kub point thiab qis volatility. Cov evaporated hnyav vapor yog tom qab ntawd sau thiab txias los ntawm lub condenser los hloov nws rov qab rau hauv cov kua dej. Cov txheej txheem no tuaj yeem rov qab qee lub zog thiab txo qis kev siv hluav taws xob. Cov dej condensed tuaj yeem rov ua dua lossis tso tawm.
Thawj cov tshuaj yog concentrated rau hauv me me ntim tom qab evaporation thiab condensation raws li qhov nce concentration ntawm solute. Cov khoom noj muaj zog tuaj yeem siv rau kev ua haujlwm tom ntej, xws li ziab ntxiv, khoom qab zib, jams, kua txiv hmab txiv ntoo, lossis ua cov khoom siv nruab nrab rau kev tsim khoom noj.
Multi-theem los yog ntau qhov cuam tshuam evaporation thiab concentration system feem ntau yog siv rau hauv kev tsim khoom lag luam. Raws li cov kev xav tau ntawm cov txheej txheem tsim khoom tshwj xeeb, cov zaub mov concentration yuav tsum tau ntsuas kom raug nyob rau lub sijhawm tiag tiag kom ntseeg tau tias cov khoom lag luam ruaj khov thiab txhim kho concentration efficiency. Hu rauLonnmeter, ib tug online concentration meter tsum, rau ntau ntxivonline concentration meterkev daws teeb meem.
Cov yam ntxwv tseem ceeb ntawm Evaporation thiab Concentration
Cov cua kub thiab lub sijhawm yuav tsum tau txiav txim siab tiag tiag hauv cov zaub mov thiab dej haus evaporation. "Tsawg kub thiab lub sij hawm luv luv" yog tsuas yog los xyuas kom meej cov zaub mov zoo li ntau li ntau tau, thaum lub sij hawm "siab kub thiab luv luv" yog tsuas yog los txhim kho efficiency ntau lawm.
Cov cua kub ntau dhau yuav ua rau degeneration, charking thiab caking ntawm cov protein, suab thaj thiab pectin. Cov txheej txheem txheej txheem kev sib cuag nrog lub tshav kub hloov mus rau saum npoo yog yooj yim rau scale rau qhov siab tshaj plaws kub, piv nrog ib puag ncig kub ntawm cov khoom. Thaum ntsuas tau tsim, nws yuav cuam tshuam rau kev hloov pauv hluav taws xob thiab ua rau muaj teeb meem kev nyab xeeb. Qhov kev ntsuas zoo los daws qhov teeb meem scaling yog ua kom cov kua tshaj tawm. Kev paub dhau los tau pom tias nce cov kua tshaj tawm tuaj yeem txo qhov tsim ntawm nplai. Tsis tas li ntawd, electromagnetic anti-scaling thiab chemical anti-scaling txoj kev tuaj yeem coj los tiv thaiv qhov muaj peev xwm scaling.
viscosity
Muaj ntau cov khoom noj muaj protein ntau, qab zib, pectin thiab lwm yam khoom xyaw nrog viscosity siab. Thaum lub sij hawm evaporation txheej txheem, viscosity ntawm cov tshuaj nce nrog cov concentration raws li fluidity txo, uas cuam tshuam cov cua kub conduction ho. Yog li ntawd, rau evaporation ntawm viscous khoom, kev ncig los yog stirring ntsuas yuam los ntawm sab nraud quab yuam yog feem ntau saws.
Foamability
Cov khoom noj uas muaj protein ntau muaj qhov nro ntau dua. Thaum evaporating thiab boiling, muaj ntau thiab ntau ruaj khov foams, uas yooj yim ua rau cov kua nkag mus rau hauv lub condenser nrog lub chav, ua rau cov kua poob.Foam tsim muaj feem xyuam rau interfacial nro. Interfacial nro tshwm sim ntawm chav, superheated kua thiab tshem tawm cov khib nyiab, thiab cov khib nyiab ua lub luag haujlwm tseem ceeb hauv kev tsim ua npuas dej. Feem ntau, surfactants tuaj yeem siv los tswj kev tsim ua npuas ncauj, thiab ntau yam khoom siv tshuab tuaj yeem siv los tshem tawm cov npuas dej.
Corrosiveness
Qee cov khoom noj uas muaj kua qaub, xws li kua zaub thiab kua txiv hmab txiv ntoo, muaj feem xyuam rau corrosion ntawm cov evaporator thaum evaporation thiab concentration. Rau cov khoom noj, txawm tias me me corrosion feem ntau ua rau muaj kab mob uas ua rau cov khoom tsis tsim nyog. Yog li ntawd, cov evaporator siv rau cov khoom noj acidic yuav tsum tau ua los ntawm corrosion-resistant thiab thermally conductive cov ntaub ntawv, thiab cov qauv tsim yuav tsum yooj yim los hloov. Piv txwv li, lub concentration ntawm citric acid tov yuav siv impermeable graphite cua sov raj los yog acid-resistant enamel sandwich evaporators.
Volatile Cheebtsam Ntau cov khoom noj ua kua muaj cov tshuaj tsw qab thiab tsw, uas yog volatile dua dej. Thaum cov kua evaporates, cov khoom no yuav khiav nrog cov chav, cuam tshuam qhov zoo ntawm cov khoom concentrated. Txawm hais tias qhov ntsuas kub qis tuaj yeem txo qhov poob ntawm cov khoom qab zib, ib txoj hauv kev zoo tshaj plaws yog coj rov qab ntsuas thiab tom qab ntawd ntxiv rau hauv cov khoom tom qab rov qab.
Txias Concentration
Cov khoom siv raw khoom ua kua (xws li kua txiv hmab txiv ntoo, cov khoom noj siv mis los yog lwm yam kev daws teeb meem uas muaj cov dej ntau) yog txias rau hauv qhov kub thiab txias. Thaum qhov kub thiab txias poob qis dua qhov chaw khov, cov dej molecules hauv cov tshuaj yuav ua rau hauv daim ntawv ntawm cov dej khov. Qhov no yog vim dej nce mus txog cov kua-kua sib npaug ntawm qhov kub thiab txias. Hauv qab no qhov kub thiab txias, cov dej dawb tshaj yuav khov ua ntej, thaum cov kuab tshuaj (xws li cov suab thaj, organic acids, pigments, flavours, thiab lwm yam) tsis yooj yim rau khov nrog dej vim muaj kev sib txawv ntawm solubility, tab sis tseem nyob hauv qhov tsis khov.
Kev sib cais ntawm Ice Crystals
Cov dej khov uas tsim los yog sib cais los ntawm kev mloog zoo los ntawm centrifugation, pom lossis lwm yam kev siv lub cev. Cov txheej txheem no tsis koom nrog cov evaporation ntawm cov kuab tshuaj, yog li nws tuaj yeem tiv thaiv kom tsis txhob degradation ntawm cov khoom xyaw thaum tshav kub kub thiab qhov poob ntawm aroma. Cov concentrated tom qab sib cais cov dej khov nab kuab yog cov khoom khov khov, uas muaj cov kuab tshuaj ntau dua li cov tshuaj qub, thaum khaws cov xim qub, saj, khoom noj muaj txiaj ntsig thiab tsw ntawm cov zaub mov kom zoo tshaj plaws.
Tswj Cov Cuab Yeej Cuab Yeej
Thaum lub sij hawm lub freeze concentration txheej txheem, yam xws li freezing npaum li cas, freezing kub thiab lub sij hawm yuav tsum tau precisely tswj kom optimize ice crystal loj, morphology thiab sib cais los ntawm cov concentrate los xyuas kom meej qhov zoo ntawm cov khoom kawg. Lub tshuab txias txias tshwj xeeb yog tsim tshwj xeeb rau cov khoom noj thiab dej haus, xws li txiv hmab txiv ntoo thiab zaub kua txiv tshiab, cov khoom siv roj ntsha, tshuaj thiab cov khoom siv high-end. Nws tuaj yeem ua kom zoo tshaj plaws ntawm cov khoom siv raw thiab muaj cov yam ntxwv ntawm kev txuag hluav taws xob thiab kev ua haujlwm siab. Txawm li cas los xij, txoj kev no kuj muaj qee yam kev txwv. Piv txwv li, cov txheej txheem concentration tsis tuaj yeem ua kom tsis muaj menyuam zoo thiab yuav xav tau kev kho kom tsis muaj menyuam ntxiv. Tsis tas li ntawd, rau qee qhov kev daws teeb meem nrog cov viscosity siab lossis muaj cov khoom xyaw tshwj xeeb, qhov nyuaj ntawm kev sib cais cov dej khov nab kuab los ntawm cov concentrate yuav nce, uas ua rau txo cov concentration efficiency thiab nce nqi.
Post lub sij hawm: Feb-13-2025
