Lub evaporator, uas yog ib qho tseem ceeb ntawm cov khoom siv kom ua tiav cov cua sov nqus thiab vaporization ntawm cov kua xov xwm, ua haujlwm ntawm cov txheej txheem ntws los ntawm theem hloov cov cua sov. Cov txheej txheem no suav nrog kev pub mis, cua sov thiab evaporation, vapor-kua sib cais, condensation thiab rov qab, thiab cov kua dej seem. Txhua kauj ruam yog sib cuam tshuam zoo los xyuas kom meej thiab ruaj khov thaum tshav kub kub hloov pauv thiab cov khoom sib cais.
Cov txheej txheem pib ntawm chav pub mis. Ua ntej muab tso rau hauv lub evaporator, cov kua yuav tsum tau ua feem ntau undergoes preheating thiab pom los kho qhov pib kub thiab tshem tawm impurities, tiv thaiv cov khoom seem uas yuav cuam tshuam rau lub tshav kub hloov chaw. Kev tswj xyuas meej ntawm tus nqi pub thiab cov concentration yog qhov tseem ceeb rau kev ua kom cov evaporation siv thiab cov khoom zoo.
Tom qab ntawd, cov cua sov thiab evaporation theem pib. Nyob rau hauv lub evaporator, cov kua xov xwm pauv cov cua sov nrog cov cua sov nruab nrab (xws li chav, dej kub, los yog tshav kub hloov roj), absorbing latent tshav kub thiab hloov mus rau hauv ib tug gaseous theem nyob rau hauv lub siab thiab kub. Raws li cov txheej txheem yuav tsum tau ua, xaiv cov txheej txheem evaporation sib txawv, xws li zaj duab xis ntog, zaj duab xis nce, los yog yuam kev: Cov zaj duab xis evaporation ntog nyob rau hauv lub ntiajteb txawj nqus los xyuas kom meej ib tug uniform downward flow ntawm cov kua zaj duab xis, haum rau cov cua sov- cov ntaub ntawv rhiab heev; nce zaj duab xis evaporation siv nce chav los tsav cov kua zaj duab xis kom npau npau, ua rau muaj kev hloov pauv ntawm cov cua sov; yuam kev ncig siv lub twj tso kua mis los tsav qhov nruab nrab kom ntws ntawm kev kub ceev, tiv thaiv scaling thiab hloov mus rau siab - kua viscosity.
Cov pa roj- cov kua sib tov uas tsim los ntawm evaporation nkag mus rau hauv cov pa roj -kua cais chav tsev. Ntawm no, siv lub zog centrifugal lossis inertial sib cais cov hauv paus ntsiab lus, cov evaporated tsis tiav tau khaws cia thiab xa rov qab mus rau thaj tsam evaporation, thaum lub zog ntshiab yog tawm rau cov txheej txheem tom ntej. Kev sib cais ua haujlwm ncaj qha cuam tshuam rau cov khoom lag luam concentration thiab kev siv hluav taws xob kub.
Cov chav feem ntau nkag mus rau hauv lub condenser kom hloov mus rau hauv cov kua theem. Cov condensate rov qab tuaj yeem rov qab siv tau lossis siv los ua cov cua sov ua ntej, ua tiav kev siv hluav taws xob cascade. Unevaporated concentrated residue raug tso tawm raws txoj hauv kev rau kev kho mob ntxiv lossis kev siv peev txheej.
Tag nrho cov txheej txheem yuav tsum tau ua haujlwm raws li kev saib xyuas ntawm lub tshuab tswj tsis siv neeg, kho qhov tsis xws li qhov kub thiab txias, siab, thiab ntws tus nqi hauv lub sijhawm kom ntseeg tau ruaj khov evaporation siv thiab cov khoom zoo. Cov txheej txheem evaporator tsim los ntawm kev tshawb fawb tsis tuaj yeem tsuas yog txhim kho kev siv hluav taws xob xwb tab sis kuj txo qhov kev pheej hmoo ntawm scaling thiab corrosion, muab kev sib cais txhim khu kev qha thiab kev daws teeb meem rau kev lag luam xws li tshuaj lom neeg, zaub mov, thiab tshuaj.
