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ʻO ka ʻokoʻa o 3a 4a 5a molecular sieve

 

He aha ka ʻokoʻa ma waena o 3a, 4a a me 5a molecular sieves?Ua hoʻohana ʻia kēia mau ʻano kānana molekala no ke kumu like?He aha nā mea e pili ana i ke kumu hana?He aha nā ʻoihana i kūpono no?E hele mai e ike me JXKELLEY.

1. ʻO ke kumu kemika o 3a 4a 5a kānana molekala

3A molecular sieve formula kemikala: 2/3KO1₃·Na₂₂O·AlO₃·2SiO.·4.5HO

4A molecular sieve formula kemikala: NaO·AlO₃·2SiO₂·4.5HO

5A molecular sieve formula kemikala: 3/4CaO1/4NaOAlO₃·2SiO₂·4.5HO

2. Ka nui o ka pore o 3a 4a 5a molecular sieve

ʻO ke kumu hana o nā kānana molekala e pili nui ana i ka nui o ka pore o nā kānana molekala, ʻo ia ka 0.3nm / 0.4nm / 0.5nm.Hiki iā lākou ke hoʻopili i nā molekele kinoea nona ka liʻiliʻi o ke anawaena mole ma mua o ka nui o ka pore.ʻO ka nui o ka nui o ka pore, ʻoi aku ka nui o ka hiki ke adsorption.ʻOkoʻa ka nui o ka pore, a ʻokoʻa nā mea i kānana a hoʻokaʻawale ʻia.Ma nā huaʻōlelo maʻalahi, hiki i ka 3a molecular sieve ke hoʻopili wale i nā molekole ma lalo o 0.3nm, 4a molecular sieve, ʻo nā molekala i hoʻopili ʻia e emi iho ma mua o 0.4nm, a ʻo 5a molecular sieve ka like.Ke hoʻohana ʻia ma ke ʻano he desiccant, hiki i kahi sieve molecular ke komo i ka 22% o kona kaumaha ponoʻī i ka makū.

3. 3a 4a 5a molecular sieve oihana noi

Hoʻohana nui ʻia ʻo 3A molecular sieve no ka hoʻomaloʻo ʻana i ka petroleum cracking gas, olefin, refinery gas a me oilfield gas, a me ka desiccant i kemika, pharmaceutical, insulating aniani a me nā ʻoihana ʻē aʻe.Hoʻohana nui ʻia no ka hoʻomaloʻo ʻana i nā wai (e like me ka ethanol), ka hoʻomaloʻo ʻana i ka ea o ke aniani insulating, ka hoʻomaloʻo ʻana o ka hau a me ka hydrogen hui ʻia, ka maloʻo refrigerant, etc.

Hoʻohana nui ʻia nā kānana molekole no ka hoʻomaloʻo ʻana i ke kinoea maoli a me nā kinoea kinoea like ʻole a me nā wai, refrigerants, pharmaceuticals, electronic data and volatile substances, hoʻomaʻemaʻe argon, a hoʻokaʻawale i ka methane, ethane a me propane.Hoʻohana nui ʻia no ka maloʻo hohonu o nā kinoea a me nā wai e like me ka ea, kūlohelohe maoli, hydrocarbons, refrigerants;hoʻomākaukau a hoʻomaʻemaʻe i ka argon;ka maloʻo paʻa o nā mea uila a me nā mea palaho;mea hoʻoheheʻe wai i loko o nā pena, nā polyesters, nā kala a me nā uhi.

Hoʻohana nui ʻia ʻo 5A molecular sieve no ka hoʻomaloʻo ʻana i ke kinoea maoli, desulfurization a me ka wehe ʻana o carbon dioxide;ka hoʻokaʻawale ʻana o ka nitrogen a me ka oxygen e hoʻomākaukau ai i ka oxygen, nitrogen a me ka hydrogen;ka petroleum dewaxing e hoʻokaʻawale i nā hydrocarbons maʻamau mai nā hydrocarbons lālā a me nā hydrocarbons cyclic.

 

Eia nō naʻe, ʻo ka ʻāpana kikoʻī kikoʻī nui a me ka adsorption polar o 5A molecular sieves hiki ke hoʻokō i ka adsorption hohonu o ka wai a me ke koena amonia.Hoʻokomo ʻia ka hui ʻana o ka nitrogen-hydrogen decomposed i kahi mea maloʻo e wehe i ke koena o ka wai a me nā mea haumia ʻē aʻe.Hoʻohana ka mea hoʻomaʻemaʻe i nā hale kiaʻi adsorption pālua, hoʻoheheʻe kekahi i ke kinoea decomposition amonia maloʻo, a ʻo nā mea ʻē aʻe e hoʻopau i ka makū a me ke koena amonia i loko o kahi moku wela (maʻamau 300-350 ℃) e hoʻokō i ke kumu o ka hana hou.I kēia manawa, hiki anei iā ʻoe ke loaʻa ka ʻokoʻa ma waena o nā kānana molekala 3a 4a 5a?


Ka manawa hoʻouna: ʻAukake-09-2022