ʻO nā mea nui o ka ea he nitrogen (78%) a me ka oxygen (21%), no laila hiki ke ʻōlelo ʻia he kumu pau ʻole ka ea no ka hoʻomākaukau ʻana i ka nitrogen a me ka oxygen.PSA mea kanu oxygen.Hoʻohana nui ʻia ʻo Nitrogen no ka ammonia synthetic, metala wela ka mālama ʻana i ka lewa pale, ke kinoea pale inert i ka hana kemika (hoʻomaka a hoʻopaʻa ʻia ka pipeline purging, ka hoʻopaʻa ʻana o nā mea maʻalahi oxidized), ka mālama ʻana i ka palaoa, ka mālama ʻana i nā hua, ka ʻoihana uila, etc. Hoʻohana nui ʻia e like me ka oxidant i ka metallurgy, ke kinoea kōkua, ka lāʻau lapaʻau, ka mālama ʻana i ka wai ʻino, ke kaomi swing adsorption nitrogen mea kanu a me ka ʻoihana kemika.Pehea e hoʻokaʻawale liʻiliʻi ai ka ea e hana ai i ka oxygen a me ka nitrogen he pilikia lōʻihi i aʻo ʻia a hoʻoponopono ʻia e nā chemists.
ʻAʻole hiki ke unuhi pololei ʻia ka nitrogen maʻemaʻe mai ke ʻano, no laila ʻo ka hoʻokaʻawale ʻana o ka ea ke koho mua.Loaʻa nā ʻano hoʻokaʻawale ea i ke ʻano haʻahaʻa haʻahaʻa, ke ʻano adsorption swing adsorption a me ke ʻano hoʻokaʻawale membrane.Me ka ulu wikiwiki o ka ʻoihana, ua hoʻohana nui ʻia ka nitrogen i ka ʻoihana kemika, uila, metallurgy, meaʻai, mīkini a me nā māla ʻē aʻe.Ke ulu nei ka noi o Kina no ka nitrogen i ka makahiki o ka 8%.ʻAʻole maopopo ka kemika o ka nitrogen.He inert loa ia ma lalo o nā kūlana maʻamau a ʻaʻole maʻalahi ke hana me nā mea ʻē aʻe.No laila, hoʻohana nui ʻia ka nitrogen e like me ka mālama ʻana i ke kinoea a me ka hoʻopaʻa ʻana i ke kinoea i ka metallurgy, electronics, kemika a me nā ʻoihana ʻē aʻe.Ma ka ʻōlelo maʻamau, ʻo ka maʻemaʻe o ka mālama kinoea he 99.99%, a ʻo kekahi e koi aku ma mua o 99.998% kiʻekiʻe-maʻemaʻe nitrogen.
ʻO ka mea hoʻoheheʻe hau hau he kumu anuanu kūpono, ʻoi aku ka nui o ka hoʻohana ʻana i ka mālama ʻana i ka semen i ka ʻoihana meaʻai, ka hana a me ka mahiʻai holoholona.I ka hana ʻana i ka ammonia synthetic i ka ʻoihana fertilizer, holoi ʻia ka hui ʻana o ka hydrogen nitrogen i loko o ka synthetic ammonia feed gas a hoʻomaʻemaʻe ʻia me ka nitrogen wai maʻemaʻe.He haʻahaʻa loa ka ʻike o ke kinoea inert, a ʻaʻole e ʻoi aku ka nui o ka carbon monoxide a me ka oxygen ma mua o 20ppm.
ʻO ka hoʻokaʻawale ʻana o ka membrane o ka ea e hoʻohana i ke ʻano permeation, ʻo ia hoʻi, ʻokoʻa nā helu diffusion o ka oxygen a me ka nitrogen i loko o ka membrane polymer nonporous.Ke hoʻopili ʻia ka oxygen a me ka nitrogen ma ka ʻili o ka membrane polymer, ma muli o ka gradient neʻe ʻana ma nā ʻaoʻao ʻelua o ka membrane, hoʻoheheʻe ke kinoea a hele i loko o ka membrane polymer, a laila desorbs ma kēlā ʻaoʻao o ka membrane.Ma muli o ka liʻiliʻi o ka nui o ka mole oxygen ma mua o ka molekala nitrogen, ʻoi aku ka nui o ka diffusion o ka oxygen ma ka polymer membrane ma mua o ka molekala nitrogen.Ma kēiaʻano, ke komo ka ea i kekahiʻaoʻao o ka membrane, hiki ke loaʻa ka ea hoʻonui i ka oxygen ma kekahiʻaoʻao a hiki ke loaʻa ka nitrogen ma kaʻaoʻao hoʻokahi.
Hiki ke loaʻa mau ka ea i hoʻonui ʻia i ka nitrogen a me ka oxygen ma ka hoʻokaʻawale ʻana i ka ea me ke ʻano membrane.I kēia manawa, ʻo ka helu koho o ka polymer membrane no ka hoʻokaʻawale ʻana o ka oxygen a me ka nitrogen ma kahi o 3.5 wale nō, a he liʻiliʻi loa ka helu permeability.ʻO ka nui o ka nitrogen o ka huahana i hoʻokaʻawale ʻia he 95 ~ 99%, a he 30 ~ 40% wale nō ka oxygen.Lawe ʻia ka hoʻokaʻawale ʻana o ka ea i ka lumi wela, 0.1 ~ 0.5 × 106pa.
Ka manawa hoʻouna: Jan-18-2022