Mankhwala oyeretsera khungu amagwira ntchito yofunika kwambiri pakusunga khalidwe ndi kukhazikika kwa mankhwala mwa kuyamwa chinyezi ndikulimbana ndi mavuto monga dzimbiri, nkhungu, ndi kuwonongeka komwe kumachitika chifukwa cha chinyezi. M'nkhaniyi, tiwona bwino ma desiccant awiri otchuka - alumina yogwira ntchito ndi silika gel, pofufuza makhalidwe awo apadera, ubwino, ndi zofooka.
Alumina yogwira ntchito ndi mtundu wa aluminiyamu wothira madzi womwe umadziwika ndi mphamvu zake zabwino kwambiri zothira madzi. Imagwiritsidwa ntchito kwambiri m'mafakitale oumitsira chifukwa imatha kuchotsa chinyezi mumlengalenga ndi mpweya. Malo ake akuluakulu komanso kuchuluka kwa madzi omwe amathira madzi kumapangitsa kuti ikhale yothandiza kwambiri posunga zinthu zotetezeka monga mankhwala, zamagetsi, ndi mankhwala. Komabe, chimodzi mwa zofooka za alumina yogwira ntchito ndikuti imatha kutulutsa kutentha kwakukulu panthawi yothira madzi, zomwe sizingakhale zoyenera kugwiritsidwa ntchito zina.
Kumbali inayi, silica gel ndi desiccant yopangidwa kuchokera ku silicon dioxide. Imadziwika chifukwa cha malo ake okwera komanso mphamvu yake yogwirizana ndi mamolekyu amadzi, zomwe zimapangitsa kuti ikhale yothandiza kwambiri pochotsa chinyezi. Silica gel imapezeka kwambiri m'mapaketi omwe ali mkati mwa phukusi lazinthu kuti zinthu zisamaume komanso zisawonongeke ndi chinyezi. Imagwiritsidwanso ntchito kuteteza zida zamagetsi, makamera, ndi zinthu zachikopa panthawi yosungira ndi kunyamula. Ngakhale kuti imagwira ntchito bwino, silica gel ili ndi mphamvu yochepa yochotsa chinyezi ndipo ingafunike kusinthidwa kapena kusinthidwa pafupipafupi.
Ma alumina oyambitsidwa ndi silica gel onse ali ndi mphamvu ndi zofooka zawo pankhani yokhudza kuyamwa kwa chinyezi. Ngakhale kuti alumina yoyambitsidwa ndi yoyenera kwambiri kuumitsa mafakitale ndi kugwiritsidwa ntchito kwakukulu, silica gel ndi yoyenera kwambiri pazinthu zazing'ono komanso zofewa. Kumvetsetsa mawonekedwe osiyana a desiccants awa ndikofunikira posankha yoyenera pamavuto ena okhudzana ndi chinyezi.
Kuwonjezera pa makhalidwe awo osiyana, ma desiccant onsewa ali ndi njira zosiyanasiyana zodziwira chinyezi. Alumina yogwira ntchito imagwira ntchito kudzera mu njira yotchedwa physisorption, komwe mamolekyu amadzi amalowetsedwa pamwamba pa desiccant. Kumbali ina, silica gel imagwiritsa ntchito kuphatikiza kwa physical adsorption ndi capillary condensation kuti igwire chinyezi mkati mwa ma pores ake. Kumvetsetsa njirazi ndikofunikira kwambiri pakukonza magwiridwe antchito a ma desiccant m'njira zosiyanasiyana.
Kuphatikiza apo, ma desiccant awa amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana. Alumina yogwiritsidwa ntchito imagwiritsidwa ntchito kwambiri poumitsa mpweya wopanikizika ndi mpweya, komanso poyeretsa zakumwa monga propane ndi butane. Imagwiritsidwanso ntchito poumitsa zosungunulira komanso pochotsa zinyalala kuchokera ku mpweya wachilengedwe. Komano, silika gel imagwiritsidwa ntchito kwambiri poteteza zida zamagetsi zodziwika bwino, kupewa dzimbiri ndi dzimbiri m'zida, komanso kusunga zikalata ndi zojambulajambula zamtengo wapatali.
Pomaliza, ma desiccant onse a alumina ndi silica gel amagwira ntchito yofunika kwambiri pakusunga khalidwe ndi kukhazikika kwa malonda polimbana ndi mavuto okhudzana ndi chinyezi. Desiccant iliyonse ili ndi makhalidwe akeake, ubwino, ndi zofooka zake, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsidwa ntchito mosiyanasiyana. Kumvetsetsa kapangidwe kake, njira zoyatsira chinyezi, ndi momwe ma desiccant awa amagwiritsidwira ntchito ndikofunikira kuti muwagwiritse ntchito bwino m'mafakitale osiyanasiyana. Kaya ndi kuumitsa mafakitale kapena kuteteza zamagetsi, desiccant yoyenera ingapangitse kusiyana kwakukulu pakusunga umphumphu ndi khalidwe la malonda.
Nthawi yotumizira: Marichi-07-2024
