Silica gel desiccants yog reusable, thaum quicklime thiab calcium chloride desiccants feem ntau tsis zoo reusable nyob rau hauv ib txwm tsev neeg tej yam kev mob.
Reusable: Silica Gel Khoom qab zib:
Silica gel desiccants tam sim no yog tib hom uas haum rau kev siv rov siv tau hauv tsev neeg. Lawv txoj cai nqus dej noo yog lub cev adsorption; cov dej noo tsis dhau los ntawm cov tshuaj tiv thaiv. Yog li ntawd, lub peev xwm nqus dej noo tuaj yeem rov qab los ntawm cua sov kom desorb cov dej noo.
Cov yam ntxwv tshwj xeeb: pob tshab lossis dawb granules; qee qhov yog xim- hloov silica gel (xws li, xiav hloov xim liab tom qab nqus dej).
Regeneration Methods:
Sun Exposure: Muab tso rau hauv qhov chaw qhuav, qhov cua los yog nyob rau hauv tshav ntuj ncaj qha rau ob peb teev tuaj yeem rov ua haujlwm ib nrab.
Tsawg-Kev Kub Kub: Ua kom sov hauv qhov cub lossis nrog lub tshuab ziab plaub hau ntawm 80-120℃rau 1-2 teev ua kom tau txais txiaj ntsig zoo dua.
Kev ceev faj: Ua ntej cua sov, paub meej tias lub ntim sab nrauv yog cua sov- tiv taus. Yog tias tsim nyog, qhib lub hnab thiab ua kom sov tsuas yog cov silica gel granules.
Tsis txhob siv microwaving ntawm qhov kub thiab txias kom tsis txhob muaj kev pheej hmoo ntawm kev tawg.
Qee cov xim -hloov silica gel desiccants siv hauv koob yees duab thiab cov khoom siv hluav taws xob hauv khw tau sau meej meej tias "rov siv tau," txhais tau tias cov neeg siv tuaj yeem rov ua dua tshiab.
Tsis yog -reusable: Quicklime Desiccant :
Quicklime desiccant (tsuas yog tsim los ntawm calcium oxide, CaO) absorbs dej los ntawm cov tshuaj tiv thaiv, tsim calcium hydroxide (slaked txiv qaub). Cov txheej txheem no yog irreversible.
Reaction equation: CaO + H₂O → Ca(OH)₂, tso cua sov ntau, ua rau muaj kev pheej hmoo ntawm kub hnyiab lossis tawg hauv qhov chaw kaw.
Reason for non-recyclability: To decompose calcium hydroxide back into calcium oxide, industrial-grade high-temperature calcination (>500 degree) yuav tsum tau, uas tsis muaj peev xwm ua tau hauv ib puag ncig hauv tsev.
Kev ceeb toom kev nyab xeeb: Tom qab nqus dej noo, nws dhau los ua cov hmoov uas muaj zog alkalinity. Tsis txhob kov cov tawv nqaij los yog noj, thiab kom deb ntawm me nyuam.
Yog li ntawd, quicklime desiccant yog siv rau ib leeg xwb thiab yuav tsum tau muab kaw thiab muab pov tseg tom qab siv.