Txiv tsawb yog ib qho ntawm cov txiv hmab txiv ntoo uas peb nquag noj. Txhawm rau khaws cov khoom noj khoom haus thiab cov xim qub ntawm cov txiv tsawb ua cov khoom lag luam, cov kws tshawb fawb sivFrovDryer rau kev tshawb nrhiav lub tshuab nqus tsev khov-drying. Kev tshawb fawb khov-qhuav ntawm txiv tsawb feem ntau tsom rau txiv tsawb slices thiab txiv tsawb hmoov.
Cov txheej txheem khov-drying ntawm txiv tsawb hmoov feem ntau suav nrog ob peb kauj ruam: pretreatment, pre-freezing, sublimation drying, desorption drying, thiab ntim. Pretreatment yuav tev, hlais, thiab pulping txiv tsawb kom pab kom qhuav tom ntej. Pre-freezing suav nrog khov cov txiv tsawb pulp mus rau qhov kub thiab txias los tsim ib qho kev ruaj ntseg sublimation interface thaum lub sij hawm sublimation ziab. Sublimation drying entails cua sov cov txiv tsawb khov khov hauv qab lub tshuab nqus tsev kom tshem tawm cov dej ntawm sublimation. Desorption drying ntxiv tshem tawm cov seem seem kom ua tiav qhov xav tau kom qhuav. Thaum kawg, cov pob txiv tsawb hmoov tau npaj rau kev ua lag luam.
Ob peb qhov tseem ceeb yuav tsum tau tswj nruj me ntsis thaum lub sij hawm khov-qhuav kom ntseeg tau tias cov khoom zoo. Ua ntej,khoom thickness: Txij li cov txiv tsawb pulp yog cov khov heev, cov tuab tuab yuav tsum tau khaws cia thaum lub sijhawm tsim khoom los tiv thaiv cov teeb meem xws li interlayers lossis tsis tiav ziab. Thib ob,kub kub thaum sublimation: Kev sim qhia tias lub sij hawm ziab kom qhuav yuav txo qis thaum lub txee kub nce nyob rau hauv qhov tsim nyog (≤20 ° C). Txawm li cas los xij, cov cua kub ntau dhau nyob rau hauv kev ua haujlwm siab yuav ua rau cov khoom tawg, yuav tsum muaj kev txwv kub. Thaum kawg,sublimation siab: Kev ua haujlwm siab feem ntau cuam tshuam rau cov cua sov thiab huab cua hloov pauv. Cov kev tshawb fawb qhia tau hais tias lub siab zoo (nyob ib ncig ntawm 40Pa) uas txo lub sij hawm kom qhuav.
Lub khov-drying nkhaus ua hauj lwm raws li ib qho tseem ceeb qhia txog cov txheej txheem ziab. Los ntawm kev txheeb xyuas cov nkhaus hauv cov xwm txheej sib txawv, cov txheej txheem tsis tuaj yeem ua kom zoo. Piv txwv li, nyob rau hauv kev pom zoo (8 hli thickness, 20 ° C cua sov, 40Pa siab), lub khov-drying nkhaus exhibits ruaj sublimation thiab desorption theem, luv luv lub sij hawm kom qhuav, thiab superior khoom zoo.
Lub tshuab ziab khaub ncaws ua kom pom qhov zoo tshaj plaws thiab cov ntawv thov dav dav hauv kev tsim cov txiv tsawb hmoov. Los ntawm kev tswj hwm qhov tseem ceeb tsis zoo thiab cov txheej txheem ua kom zoo, ob qho tib si cov khoom lag luam thiab kev ua haujlwm tau zoo tuaj yeem txhim kho. Niaj hnub no, raws li cov qauv kev noj qab haus huv tau nce siab, ob qho tib si ntau yam ntawm cov tshuab ziab khaub ncaws-tsim rau cov kev xav tau zoo-tau txais kev saws loj.Txais tos nugkom paub meej ntxiv.
Lub sij hawm xa tuaj: Mar-11-2025
