Desiccants yog cov khoom uas nqus dej los yog dej.Qhov no tuaj yeem ua tiav los ntawm ob qho txheej txheem sib txawv:
Cov dej noo yog adsorbed lub cev;Cov txheej txheem no hu ua adsorption
Cov dej noo yog chemically khi;txheej txheem no hu ua absorption
Hom desiccant yog activated alumina, molecular sieve, alumina silica gel
Adsorbent (adsorption tus nqi adsorption ntim sib piv)
Adsorption ntim:
Alumina silica gel> silica gel> molecular sieve> activated alumina.
Adsorption tus nqi: molecular sieve> aluminasilica gel> silica gel> activated alumina.
Qhia rau peb koj cov kev xav tau kev tiv thaiv noo noo, thiab peb yuav pom zoo kom cov desiccant tsim nyog.Yog tias koj cov khoom lossis cov khoom ntim yuav tsum muaj cov dej noo tsawg, nws yog qhov zoo tshaj plaws los siv molecular sieves.Yog tias koj cov khoom tsis muaj dej noo tsawg, silica gel desiccant yuav ua.
① Adsorbent rau hauv dej, compressive zog yog txo, txhaws tsis nruj
② qhov sib npaug ntawm lub siab tsis yog los yog thaiv, qhov cuam tshuam loj heev
③ siv cov nplawm pas nrig filling, cuam tshuam lub zog compressive ntawm cov khoom
Activated alumina kub: 160 ° C-190 ° C
Molecular sieve: 200 ° C-250 ° C
Dej-resistant alumina silica gel: 120 ° C-150 ° C
Kev suav cov mis: sau QTY = Filling Volume * Bulk density
Piv txwv li, ib txheej generator = 2M3 * 700kg / M3 ＝ 1400kg
JZ-CMS4N concentration nitrogen ntau lawm yog 240 M3 / tuj raws li 99.5% N2 purity, Yog li ib txheej N2 tso zis muaj peev xwm yog = 1.4 * 240 = 336 M3 / h / set
PSA O2 txoj kev: pressurized adsorption, atmospheric desorption, Peb tuaj yeem siv JZ-OI9, JZ-OI5
VPSA O2 txoj kev: atmospheric adsorption, nqus desorption, Peb tuaj yeem siv JZ-OI5 thiab JZ-OIL hom
Activated zeolite hmoov nqus dej ntau dhau hauv PU system, qhov defoamer yog antifoaming thiab tsis nqus dej.Lub hauv paus ntsiab lus ntawm defoamer yog txhawm rau txhawm rau qhov sib npaug ntawm qhov ua npuas ncauj ruaj khov, kom cov npuas pores tawg.activated zeolite hmoov nqus dej thiab siv los rhuav tshem qhov sib npaug ntawm cov dej thiab roj theem kom defoam.