I loko o ka ethanol dehydration, ho'ohana nui 'ia nā kānana molekole zeolite no ka lanakila 'ana i ka palena kiko azeotropic, a ho'opuka i ka ethanol anhydrous a i 'ole ka ethanol ma'ema'e ki'eki'e ma o nā ka'ina hana -wai a i 'ole kinoea{1}}. Hoʻohana nui ʻia kēia ʻenehana i ka bioethanol, lāʻau lapaʻau, meaʻai a me nā ʻoihana kemika ʻē aʻe.
No ke aha e pono ai e hoʻoheheʻe ʻia ka ethanol?
Ma ke kaʻina hana, hiki ke hana ʻia ka wai ke loaʻa ka ethanol. Hoʻokumu ʻo Ethanol i kahi hui azeotropic me ka wai, ʻaʻole hiki ke ʻoi aku ma mua o ka neʻe ʻana o 95.6% ma lalo o nā kūlana distillation maʻamau.
A ma nā noi ʻoihana, ʻo ka ethanol maʻemaʻe kiʻekiʻe ka mea e pono ai. No laila, pono ka ethanol dehydration a i ʻole ka hoʻomaʻemaʻe ethanol e wāwahi i nā palena azeotropic a loaʻa i kahi huahana hope loa.
Zeolite Molecular Sieve No ka Ethanol Dehydration
Type 3A zeolite molecular sieve ua hōʻike ʻia i ka ethanol dehydration, ʻoi aku ka maikaʻi o ka adsorbs i nā molekele wai pola a ʻaneʻane ʻaʻohe adsorption i nā molekala ethanol, a ʻo ia ke koho mua no ka ethanol dehydration.
ʻO ke anawaena o kahi mole wai ma kahi o 2.8 Å, ʻoiai ʻo ke anawaena o ka mole ethanol ma kahi o 4.4 Å, no laila, ʻo nā micropores (me ke anawaena o ma kahi o 3Å) o nā kānana molekele zeolite 3A e ʻae ai i nā molekule wai e komo i nā ala adsorption, akā hoʻokuke aku i nā molekala ethanol nui aʻe. No laila, hiki i ka 3A molecular sieve ke koho koho i ka wai, i ka loaʻa ʻana o ka ethanol maʻemaʻe kiʻekiʻe.
Molecular Sieve Ethanol Dehydration Process
ʻO ka hoʻohana ʻana i ka kānana molekula e hoʻoneʻe i ka wai i ka pae PPM i kēia manawa kekahi o nā ʻenehana ʻoi loa a maikaʻi loa i ka ʻoihana dehydration ethanol. Ke hoʻohālikelike ʻia me nā kaʻina hana dehydration ethanol, ʻoi aku ka maikaʻi o ka hoʻokele waiwai a me ke kaiapuni.
ʻO ke kaʻina hoʻoheheʻe TSA: Ke hele nei ka ethanol wai i loko o ka moena adsorption, hoʻomehana no ka desorption a me ka hana hou. He kūpono ia no nā noi liʻiliʻi a me ka-nui, a hoʻohana mau ʻia i nā ʻōnaehana me nā hana pūʻulu a me nā pōʻai hana lōʻihi.
Ke kaʻina hana hoʻoheheʻe PSA: Komo ke kinoea ethanol i ka ʻōnaehana adsorption ma lalo o ke kaomi. I ka wā depressurization, hoʻokuʻu ʻia ka wai, hoʻoulu hou i ka sieve molecular. He kūpono ia no nā ʻōnaehana hoʻoheheʻe wai ethanol ʻoihana nui-e koi ana i ka hana mau.
Nā Pōmaikaʻi Molecular Sieve No ka Ethanol Dehydration
ʻOi aku ka maikaʻi o ka ʻenehana: ʻO ka molecular sieve dehydration unit ka ikaika o ka maʻalahi a me ke kumu kūʻai haʻahaʻa. He mea maʻalahi ka hoʻoulu hou ʻana o nā kānana molekala, a he lōʻihi ke ola lawelawe, hiki ke hoʻomau i ka hana.
Ka hana a me ka mālama ʻana: Hiki ke hoʻolālā ʻia me nā hale kiaʻi ʻelua a i ʻole nā hale kiaʻi he nui no ka adsorption a me ka hana hou. Hōʻike ia i ka mana maʻalahi, ka hana maʻalahi a me ka mālama maʻalahi.
Maʻemaʻe a me ka pono: ʻO ka maʻemaʻe o ka ethanol huahana hope hiki ke hiki i 99.5% ~ 99.9% (anhydrous ethanol). Ua lilo ka ʻenehana hoʻoheheʻe molecular sieve i mea maʻamau no ka hana ʻana i ka ethanol anhydrous, e hāpai ana i nā hoʻonui ʻōmaʻomaʻo i ka biofuel a me nā ʻoihana kemika.
ʻO ka hoʻokele waiwai a me ke kaiapuni: ʻAʻohe mea hoʻohui ʻona i loko o ke kaʻina holoʻokoʻa, ʻaʻohe hoʻokuʻu ʻōpala, e mālama i ka ikehu a hoʻomaikaʻi nui i ka maikaʻi dehydration i hoʻohālikelike ʻia me nā ʻano kuʻuna.
