Silica gel desiccant yog qhov ncauj lus nquag tshaj tawm nrog lub zog hygroscopicity thiab tshuaj lom neeg ruaj khov. Piv nrog rau lwm cov twj kom khov kho, nws muaj kev nyab xeeb siab dua qub thiab tuaj yeem siv rau hauv cov khoom noj thiab tshuaj. Puas muaj lwm txoj kev paub yog tias kuv tuaj yeem sim ua dua?
1. Kev tsim kho tom qab silica gel adsorbs cov dej nqus: Tom qab silica gel adsorbs cov dej, nws tuaj yeem tshem tawm los ntawm thermal desorption. Muaj ntau txoj hauv kev cua sov, xws li hluav taws xob cua sov, nplaim taws kub thiab cua kub kom qhuav. Nws yog qhov tsim nyog los tswj qhov kub ntawm de-ntxiv cov cua sov ntawm 1 20 - 1 80 ° C. Rau qhov taw qhia cov kua nplaum xiav, hloov xim silica, thiab DL xiav silica gel, nws tsim nyog tswj 1 00 - 1 20 ° C. Cov cua kub ntau dua thaum lub sij hawm tsim dua tshiab ntawm ntau cov kua roj zeb silica tsis pub dhau cov kev txwv hauv qab no: coarse-pored silica gels yuav tsum tsis pub ntau dua 600 ° C ; nplua-pored silica gels yuav tsum tsis pub ntau tshaj 200 ° C; Qhov taw qhia xiav gel (los yog tso kua silica gel) yuav tsum tsis pub ntau tshaj 1 20 ° C; Cov kua nplaum txhuas yuav tsum tsis siab tshaj 350 ℃. Tom qab cov roj silica gel rov ua dua tshiab, nws cov dej noo noo feem ntau tswj tau hauv qab 2% thiab nws tuaj yeem tso rov qab siv.
2. Cov teeb meem xav tau kev saib xyuas thaum siv silica gel dua:
(1) Thaum lub tshuab hluav taws xob rov qab silica, silica gel kub yuav ua rau muaj kev hloov pauv hauv cov pore qauv thiab txo nws cov adsorption effect, cuam tshuam tus nqi. Rau qhov ntsuas xiav xiav silica gel lossis hloov kho, qhov kev tsim kho kub rov qab yuav tsum tsis pub tshaj 1 20 deg.] C, txwv tsis pub lawv yuav maj mam poob xim xim tus neeg sawv cev oxidized xim-txhim kho kev ua.
(2) tom qab tsim cov tshuaj silica feem ntau yuav tsum sieved tshem cov zoo kom cov hais kom zoo ib yam. Bi qhov chaw Zhengzhou qhib silica gel nyob rau hauv chav kawm ntawm nruab nrab los ntawm adsorption ntawm cov dej vapor lossis lwm yam organic tshuaj, muaj peev xwm adsorption poob qis, tuaj yeem rov siv dua tom qab tsim dua tshiab los ntawm.
Tsis tas li ntawd, silica gel desiccant yog qhov tsim nyog rau chav tsev kub ((20 ~ 32 ℃) thiab qhov kub thiab txias (60 ~ 90 ℃). Vim tias nws tuaj yeem txo qhov ntsuas huab cua sib txheeb ze ntawm thaj tsam li 40%, nws muaj ntau qhov kev siv.
