ʻO ka alumina i hoʻāla ʻia a me ka sieve molekala, ua like like lāua (hele mai lāua ʻelua i ke ʻano beaded poepoe liʻiliʻi), hana lāua i ke kaʻina hana like (hoʻopili lāua i nā mea ma kahi pae molekala), a loaʻa iā lāua nā waiwai regenerative (hiki iā ʻoe ke hoʻohana hou i ka mea ke hiki i ka desiccant i ka hiki ke lawa) akā he ʻelua mau huahana ʻokoʻa loa lāua. No laila, ʻo ka nīnau, me nā ʻano like he nui, pehea lāua i ʻokoʻa ai?
ʻO ke ʻano o ko lākou hana ʻia ʻana he wahi hoʻomaka maikaʻi ia. Hana ʻia ka alumina i hoʻāla ʻia mai ka alumini oxide he porous loa, ʻoiai ʻo ka sieve molekala i hana ʻia mai nā metala crystalline alumino-silicates. ʻO ke ʻano o kēia, hiki ke hoʻohālikelike ʻia nā pores ma ka sieve molekala i nā nui kikoʻī i ʻike pinepine ʻia ʻo 3A, 4A, 5A, a me 13X, kahi i ʻike ʻole ʻia ai nā pores o ka alumina i hoʻāla ʻia. ʻO ia hoʻi, hiki ke hoʻohana ʻia ka sieve molekala e hoʻokaʻawale i kekahi mau molekala o nā nui kikoʻī mai kekahi i kekahi, no ka laʻana ka wehe ʻana i ka ammonia mai nā kahawai kinoea kūlohelohe.
Mai kahi kuanaʻike noi, eia ke ʻano o ko lākou ʻokoʻa. Loaʻa i ka alumina i hoʻāla ʻia kahi mana adsorption wai ikaika maoli, hiki iā ia ke adsorb i ka wai he nui ma mua o ka sieve molekala, ʻo ia ka mea pono loa i nā compressors air a i ʻole no kekahi mau noi hana kinoea kūlohelohe. ʻO ke kūpaʻa o ka mea e hiki ai iā ia ke kū i ka nui o ke kaomi me nā pae kiʻekiʻe o ka makū.
ʻAʻole hiki i ka alumina i hoʻāla ʻia ke hoʻopili i nā ʻano mea like ʻole a hoʻokaʻawale paha i kekahi mau molekala mai kekahi i kekahi e like me nā kānana molekala, e hoʻolilo ana i mea kūpono ʻole i kahi hana e like me ka dehydration ethanol. ʻO kēia no ka mea hiki i ka alumina i hoʻāla ʻia ke hoʻopili i nā molekala ethanol a me ka wai a no laila ʻaʻohe hoʻokaʻawale ʻana.
ʻAʻole paha e hiki i ka kānana molekala ke omo i ka nui o ka wai akā inā pono ʻoe e hoʻēmi i ka wai i ka nui haʻahaʻa loa, a hiki i ka 0.1ppm, ʻo ka sieve molekala kāu mea omo o ke koho no ka mea he mea kēia i hiki ʻole i nā adsorbents ʻē aʻe ma waho aʻe o ka sieve molekala ke hana.
Hiki ke hoʻohana ʻia ke kānana molekala e hoʻokaʻawale i nā mole kikoʻī mai kekahi i kekahi, ma muli o ka hoʻopilikino ʻana o ko lākou nui o nā pore. No ka laʻana hiki iā ʻoe ke hoʻokaʻawale i ka wai mai ka ethanol, a me ke kalapona ʻokikene, ammonia, a me nā hydrocarbons nui aʻe mai nā kahawai kinoea kūlohelohe, kahi mea hiki ʻole i ka alumina i hoʻāla ʻia ke hana, a ʻaʻole paha e hana me ka pono like.
Ka manawa hoʻouna: Aug-05-2019