Nā kumu o ka molecular sieve inactivation i ka hoʻomaʻemaʻe ʻōnaehana o ka ea hoʻokaʻawale ʻāpana

1, ka hopena o ka nui o ka wai ma ka hana sieve molecular
ʻO ka hana nui o ka mea hoʻomaʻemaʻe hoʻokaʻawale ea ʻo ia ka wehe ʻana i ka makū a me ka ʻike hydrocarbon mai ka lewa e hāʻawi i ka ea maloʻo no nā ʻōnaehana hope. ʻO ke ʻano o nā mea hana i ke ʻano o ka moena moe moe, ʻo ke kiʻekiʻe hoʻopiha alumina haʻahaʻa haʻahaʻa he 590 mm, ʻo ka 13X molecular sieve hoʻopiha piha kiʻekiʻe he 962 mm, a ua hoʻololi ʻia nā mea hoʻomaʻemaʻe ʻelua ma waena o kekahi. Ma waena o lākou, hoʻohana nui ʻia ka alumina i ka wai i ka lewa, a hoʻohana ka molecular sieve i kāna molecular selective adsorption loina e adsorb hydrocarbons. Ma muli o ka haku mele a me nā waiwai adsorption o ka sieve molecular, ʻo ke kauoha adsorption: H2O> H2S> NH3> SO2> CO2 (ke kauoha o ka adsorption o nā kinoea alkaline). H2O> C3H6> C2H2> C2H4, CO2, C3H8> C2H6> CH4(kauoha o ka adsorption o hydrocarbons). Hiki ke ʻike ʻia ʻo ia ka hana adsorption ikaika loa no nā molekole wai. Eia nō naʻe, ʻoi aku ka kiʻekiʻe o ka wai o ka sieve molecular, a ʻo ka wai manuahi e hana i ka crystallization wai me ka sieve molecular. ʻO ka mahana (220 °C) i hāʻawi ʻia e ka mahu 2.5MPa i hoʻohana ʻia no ka hoʻoulu hou ʻana i ka wela kiʻekiʻe ʻaʻole hiki ke hoʻoneʻe i kēia ʻāpana o ka wai aniani, a ʻo ka nui o ka pore o ka molecular sieve e noho ʻia e nā molekole wai aniani, no laila ʻaʻole hiki ke hoʻomau i ka adsorb hydrocarbons. ʻO ka hopena, ua hoʻopau ʻia ka kānana molekele, ua pōkole ke ola o ka lawelawe, a komo nā molekole wai i ka pā haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa o ka ʻōnaehana hoʻoponopono, e hoʻokuʻu ai i ke kahawai kahe o ka mea hoʻololi wela, e hoʻopilikia i ke kahawai ea. a me ka hopena wela o ka mea hoʻololi wela, a ma nā hihia koʻikoʻi, ʻaʻole hiki ke hana maʻamau ka mea hana.
2. Ka hopena o ka H2S a me SO2 i ka hana kānana molekala
Ma muli o ka adsorption koho o ka molecular sieve, i ka hoʻohui i kona kiʻekiʻe adsorption o ka wai molekele, kona affinity no H2S a me SO2 oi aku ka maikaʻi ma mua o kona adsorption hana no CO2. Noho ʻo H2S a me SO2 i ka ʻili o ka molecular sieve, a ʻo nā ʻāpana acidic e hoʻopili me ka sieve molecular, ka mea e ʻona ai ka molecular sieve a hoʻopau ʻia, a e emi iho ka mana adsorption o ka molecular sieve. Hoʻopōkole ʻia ke ola lawelawe o ka sieve molecular.
I ka hōʻuluʻulu manaʻo, ka excessive moisture maʻiʻo, H2S a me SO2 kinoea maʻiʻo i loko o ka puka makani o ka ea hoʻokaʻawale ea cooling hale kiaʻi ke kumu nui no ka inactivation o molecular kānana a me ka shortening o ka lawelawe ola. Ma o ka mana koʻikoʻi o nā hōʻailona kaʻina hana, ka hoʻohui ʻana o ka mea hoʻomaʻemaʻe puka hoʻomaʻemaʻe ʻana, ke koho kūpono o nā ʻano fungicide, ka nui o ka nui o ka fungicide, ka hale hoʻoluʻu wai e hoʻohui i ka wai maka, ka nānā ʻana maʻamau o ka leakage exchanger wela a me nā ana ʻē aʻe, ka palekana a paʻa. Hiki i ka hana o ka mea hoʻomaʻemaʻe ke pāʻani i ka ʻike manawa, ka ʻōlelo aʻoaʻo, nā kumu hoʻoponopono manawa, i ka nui nui e hōʻoia i ka hoʻohana ʻana o ka molecular sieve efficiency.