Qhov ceeb toom rau kev hlawv lub cub tawg roj taws cawv qhov cub
Nov 20, 2020
Lub cub tawg roj siv hauv cov cawv cawv cawv yog ethanol. Yuav tsum siv cov tshuaj ethanol nyob hauv kev siv. Ntxiv ntawm cov hluavtaws ethanol roj (haus dej cawv cawv) yog txwv tsis pub. Hluavtaws ethanol muaj cov formaldehyde thiab lwm yam tshuaj phem. Tsis tas li, haus cawv yuav tsum tau siv nrog lub siab xav tau ntau dua 95%, thiab haus dej cawv nrog lub siab nyob hauv qab 95% cuam tshuam qhov siab thiab xim ntawm nplaim taws.
Nws kuj muaj cov kev xav tshwj xeeb ntxiv rau ntxiv cov roj cawv hauv cov hluav taws. Lub nrig hluav taws xob yuav tsum tau siv rau txhawm rau kom tsis txhob ntws los ntawm nplaim hluav taws thiab lwm yam khoom. Vim yog lub zog permeability haus cawv, cov dej cawv cawv sab nraum lub cav txuas nrog tuaj yeem ua hluav taws tau yooj yim. Tus nqi cawv yuav tsum tau ntxiv nyob rau ib zaug ntxiv raws li lub sijhawm yuav tsum tau siv. Siv tom qab ntxiv, siv daim ntaub qhuav los ntxuav cov dej cawv sib xyaw thaum ua cov txheej txheem txhawm rau kom paub tseeb tias tsis muaj cov dej cawv uas nyob ntawm lub ntsej muag.
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