Raws li ib qho tseem ceeb ntawm cov cuab yeej siv rau kev ua tiav qhov endothermic vaporization ntawm cov kua xov xwm, qhov siv tau ntawm cov evaporators raug txwv los ntawm cov khoom siv, cov khoom siv cua sov, cov hom phiaj txheej txheem, thiab ib puag ncig yam. Cov hauj lwm evaporation sib txawv muaj cov kev cai tshwj xeeb rau cov khoom siv, cov khoom siv, thiab kev ua haujlwm tsis zoo. Tsuas yog thaum muaj kev sib raug zoo nrog ib puag ncig tuaj yeem ua tau zoo thiab ruaj khov thaum tshav kub kub hloov thiab kev sib cais ua tiav.
Los ntawm qhov kev xav ntawm cov khoom siv, siab - cov kua viscosity yog tsim rau kev quab yuam cov evaporators, uas siv cov quab yuam sab nraud kom nce tus nqi ntws thiab tiv thaiv cov thickening ntawm cov stagnant txheej los ntawm kev ua kom thermal kuj. Thaum tshav kub kub- cov ntaub ntawv rhiab heev yog ua tiav zoo tshaj plaws hauv qhov qis- boiling- taw tes, luv- nyob ib puag ncig lub tshuab nqus tsev; scraped los yog phaj evaporators tuaj yeem txo qhov kev pheej hmoo ntawm thermal degradation. Kev ncua nrog cov ntsiab lus siab siab yog qhov ua rau crystallization lossis scale buildup ntawm lub tshav kub hloov chaw, yuav tsum tau yooj yim - rau - huv cov qauv ua ke nrog lub sij hawm descaling ntsuas los xyuas kom meej kev khiav hauj lwm tas mus li. Corrosive xov xwm yuav tsum tau siv cov corrosion{10}}cov alloys resistant los yog anti{11}}corrosion coatings rau cov khoom siv lub cev thiab tiv tauj qhov chaw los tiv thaiv tshuaj corrosion.
Thaum tshav kub kub tej yam kev mob yog lwm yam tseem ceeb ib puag ncig. Thaum siv cov saturated chav ua cua sov, lub evaporator yuav tsum muaj qhov sib piv ntawm qhov sib txawv ntawm qhov kub thiab txias tsim thiab siab -cov kabmob muaj peev xwm. Yog tias siv cov roj hloov hluav taws xob lossis dej kub, qhov ntsuas kub sib xws thiab thermal stability yuav tsum raug txiav txim siab. Hauv cov xwm txheej pov tseg thaum tshav kub kub rov qab, qis-kub khib nyiab tuaj yeem siv tau rau cov evaporation thib ob hauv qhov qis-kub evaporator kom ua tiav kev siv hluav taws xob cascade; Nyob rau hauv cov ntaub ntawv no, kev tswj ntawm lub tshav kub hloov pauv kub qhov sib txawv yog qhov tseem ceeb heev.
Cov hom phiaj txheej txheem kuj txiav txim siab qhov chaw siv tau. Cov dej num sib txawv xws li concentration, crystallization, ziab, los yog hnyav rov qab muaj cov kev xav tau sib txawv rau kev siv evaporation, qhov kawg concentration, thiab cov khoom tsim, yuav tsum tau hloov kho rau kev khiav hauj lwm siab, kub profiles, thiab tus naj npawb ntawm evaporation theem. Piv txwv li, multi-effect evaporation yog haum rau loj -scale nruam concentration, ua kom tiav multi-theem cua sov hloov nrog qis zog noj; thaum me me - nplai sib quas ntus evaporation yog hloov tau yooj yim dua thiab yooj yim dua los tuav batch-rau- cov khoom hloov pauv.
Ib puag ncig tej yam kev mob xws li chaw teeb tsa, huab cua kub, thiab qhov cua kuj cuam tshuam rau kev xaiv cov qauv evaporator. Nyob rau hauv qhov chaw -ib puag ncig, cov phaj compact los yog cov evaporators ntog tuaj yeem xaiv tau; nyob rau hauv cov cheeb tsam txias, txhim kho cua sov thiab tiv thaiv kev tiv thaiv yog tsim nyog los tiv thaiv qhov nruab nrab los ntawm solidifying thiab thaiv cov ntws raws.
Hauv cov ntsiab lus, qhov chaw siv tau rau cov evaporators yuav tsum tau soj ntsuam xyuas kom zoo los ntawm kev xav txog cov khoom siv, cov khoom siv cua sov, cov txheej txheem yuav tsum tau ua, thiab qhov chaw nyob. Tsuas yog nrog kev sib txuam meej tuaj yeem ua tiav cov txheej txheem evaporation zoo thiab txhim khu kev qha hauv ntau yam kev lag luam thiab pej xeem xwm txheej.
