Raws li txoj kev evaporation:
Natural evaporation: Cov tshuaj evaporates ntawm qhov kub thiab txias hauv qab nws qhov kub, xws li dej hiav txwv ntsev ntau lawm. Hauv qhov no, cov kuab tshuaj tsuas yog vaporizes rau ntawm qhov chaw daws teeb meem, ua rau muaj qhov vaporization tsawg.
Boiling evaporation: Cov tshuaj yog rhuab mus rau nws boiling point, ua rau nws evaporate thaum boiling. Kev lag luam evaporation ua haujlwm feem ntau yog hom no.
Raws li cov txheej txheem cua sov:
Kev siv hluav taws xob ncaj qha hluav taws xob: Qhov no suav nrog cov roj sib xyaw nrog huab cua, kub hnyiab los ua kom muaj hluav taws kub - kub thiab flue roj, uas yog ncaj qha txhaj rau hauv cov tshuaj kom evaporated los ntawm lub nozzle kom sov cov tshuaj thiab vaporize cov kuab tshuaj.
Indirect tshav kub qhov chaw cua sov: Thaum tshav kub kub yog pauv mus rau cov tshuaj evaporated los ntawm lub thawv phab ntsa. Qhov no yog cov txheej txheem hloov hluav taws xob uas tshwm sim nyob rau hauv ib qho kev faib hluav taws xob sib cais.
Raws li kev khiav hauj lwm siab: evaporation yuav muab faib ua atmospheric siab, pressurized, thiab depressurized (nqus) evaporation ua hauj lwm. Pom tseeb, rau cov cua sov- cov ntaub ntawv rhiab heev, xws li tshuaj tua kab mob thiab kua txiv hmab txiv ntoo, yuav tsum tau siv depressurization. High- cov ntaub ntawv viscosity yuav tsum tau evaporated siv lub siab siab - kub qhov chaw (xws li cov roj hloov hluav taws xob thiab cov ntsev molten).
Raws li tus naj npawb ntawm cov teebmeem: Evaporation tuaj yeem muab faib ua ib zaug -effect thiab multi-effect evaporation. Yog hais tias cov pa thib ob uas ua los ntawm evaporation yog ncaj qha condensed thiab tsis rov qab siv dua, nws yog hu ua ib qho - cuam tshuam evaporation. Yog tias cov chav thib ob yog siv los ua cov cua sov rau cov nyhuv tom ntej, thiab ntau lub evaporators txuas nrog hauv cov koob, cov txheej txheem evaporation no hu ua multi-effect evaporation.
