Alumina ndi sefa ya mamolekyulu yogwira ntchito, zimafanana (zonse zimabwera mu mawonekedwe ang'onoang'ono ozungulira okhala ndi mikanda), zimachita chimodzimodzi (zimayamwa zinthu pamlingo wa mamolekyulu), ndipo zonse zimakhala ndi mphamvu zobwezeretsa (mungagwiritsenso ntchito zinthuzo desiccant ikafika pamlingo wokwanira) komabe ndi zinthu ziwiri zosiyana kwambiri. Ndiye funso nlakuti, ndi zofanana zambiri, zimasiyana bwanji?
Chomwe amapangidwa nacho ndi poyambira pabwino. Alumina yogwiritsidwa ntchito imapangidwa ndi aluminiyamu oxide yomwe imakhala ndi ma pore ambiri, pomwe molecular sieve imapangidwa ndi aluminiyamu-silicates yachitsulo choyera. Izi zikutanthauza kuti ma pore omwe ali pa molecular sieve amatha kupangidwa m'makulidwe enaake omwe nthawi zambiri amawoneka ngati 3A, 4A, 5A, ndi 13X, pomwe ma pore a alumina ogwiritsidwa ntchito alibe kukula koyezedwa. Izi zikutanthauza kuti molecular sieve ingagwiritsidwe ntchito kulekanitsa mamolekyu enaake a kukula kwinakwake, mwachitsanzo kuchotsa ammonia kuchokera ku mitsinje ya gasi lachilengedwe.
Poganizira momwe amagwiritsidwira ntchito, umu ndi momwe amasiyanirana. Alumina yogwiritsidwa ntchito ili ndi mphamvu yokwanira yothira madzi, imatha kuthira madzi ambiri kuposa sefa ya molecular, izi zimapangitsa kuti ikhale chinthu chothandiza kwambiri mu ma compressor a mpweya kapena pazinthu zina zopangira gasi wachilengedwe. Kulimba kwa chinthucho kumalola kuti chipirire kupsinjika kwambiri komanso chinyezi chambiri.
Alumina yogwira ntchito singathe kunyamula zinthu zosiyanasiyana kapena kulekanitsa mamolekyu ena monga momwe ma sefa a mamolekyu amachitira, zomwe zimapangitsa kuti isagwire ntchito bwino monga ethanol dehydration. Izi zili choncho chifukwa alumina yogwira ntchito imatha kunyamula mamolekyu a ethanol ndi madzi ndipo motero palibe kulekanitsidwa komwe kungachitike.
Sefa ya mamolekyulu singathe kunyamula madzi ambiri koma ngati mungafunike kuchepetsa madzi kufika pa 0.1ppm, sefa ya mamolekyulu ingakhale chisankho chanu choyamwa chifukwa ichi ndi chinthu chomwe ma adsorbents ena kupatula sefa ya mamolekyulu sangakwanitse kuchita.
Sipo ya mamolekyu ingagwiritsidwenso ntchito kulekanitsa mamolekyu enaake, chifukwa cha kusintha kwa kukula kwa ma pore awo. Mwachitsanzo, mutha kulekanitsa madzi ndi ethanol, ndi carbon dioxide, ammonia, ndi ma hydrocarbon akuluakulu kuchokera ku mitsinje ya gasi yachilengedwe, zomwe alumina yoyendetsedwa ndi madzi singachite, kapena sizingachite bwino mofanana.
Nthawi yotumizira: Ogasiti-05-2019