Video: Vim li cas cov pa roj carbon dioxide yog cov kuab tshuaj haum rau kev tu kom qhuav?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Ob qhov zoo ntawm kev siv kua cov pa roj carbon dioxide rau qhuav tu yog:? Nws muaj viscosity tsawg, zoo dua tu yog ua tau vim hais tias me me yuav raug tshem tawm ntawm qhov chaw nrog tsawg redeposition. Ua kua cov pa roj carbon dioxide yog tsis muaj polar hnyav uas yog qhov zoo dua ntawm kev tshem tawm cov av uas tsis yog-polar xws li roj thiab roj.
Nyob rau hauv tas li ntawd, dab tsi yog ib tug zoo qhuav tu hnyav?
Txawm tias nws lub npe, qhuav tu tsis yog " qhuav "txheej txheem; khaub ncaws tau so hauv cov kua hnyav . Tetrachlorethylene (perchloroethylene), uas kev lag luam hu ua "perc", yog siv dav tshaj plaws. hnyav . Lwm txoj cov kuab tshuaj yog trichloroethane thiab roj roj.
Qhov thib ob, yog vim li cas supercritical co2 yog cov kuab tshuaj zoo? Vim nws cov kua zoo li ntom ntom, a supercritical kua dej hnyav lub zog yog piv rau cov kua. Yog li, hnyav fais fab tuaj yeem hloov kho los ntawm qhov sib txawv ntawm qhov kub thiab txias. Vim tias lawv cov khoom muaj zog ua haujlwm ntawm qhov kub thiab txias, supercritical Cov kua dej yog suav tias yog tunable cov kuab tshuaj.
Sib piv, co2 qhuav tu yog dab tsi?
Cov pa roj carbon dioxide ( CO2 ) tu siv kua CO2 raws li tu hnyav nrog rau detergent. Cov kua CO2 yog tsim los ntawm kev tso cov roj uas tsis yog-flammable thiab nontoxic gas nyob rau hauv siab. Cov txheej txheem siv zog tsawg dua li ib txwm muaj qhuav tu vim tsis muaj cov kuab tshuaj kom sov.
Vim li cas co2 suav tias yog cov kuab tshuaj ntsuab?
Supercritical CO2 yog qhov tshwj xeeb hnyav uas muaj cov yam ntxwv ntawm qhov sib txawv tsis sib xws, tsis tshua muaj viscosity, thiab siab diffusivity. Manipulation ntawm cov yam ntxwv no tau coj mus rau ntau yam kev siv ntawm no ntsuab kuab tshuaj nyob rau hauv ntau qhov chaw xws li extractions, impregnations, particle tsim, thiab tu.
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