Hoʻohana nui i ka n-hexane
ʻO ka N-hexane kahi mea hoʻoheheʻe ʻona maikaʻi ʻole, hoʻohana nui ʻia i ka ʻili ʻaila meaʻai, butyl, butadiene rubber organic synthesis, propylene, olefin polymerization, pharmaceutical intermediates, pena thinners, a me ka hoʻomaʻemaʻe ʻana i ka metala o nā lako mīkini.

Hoʻomohala a me ka hoʻohana nui ʻana i ka n-hexane
Hoʻohana ʻia ka mākeke nui no ka n-hexane i ka ʻoihana leaching aila ʻaila, ʻoi aku ka nui ma mua o 60% o ka nui o ka n-hexane. ʻO ka hapa nui o nā noi i koe i loko o ka ʻoihana lāʻau a me kemika.

I ka hoʻomaka ʻana o ka makahiki 1960, hoʻolaha nā ʻāina kūkulu komohana e like me ʻEulopa a me ʻAmelika Hui Pū ʻIa i ka "leaching method" i ka hana ʻaila meaʻai. Ma waho aʻe o kekahi ʻili ʻaila liʻiliʻi, ʻo ka ʻaila ʻai o ka honua i hana ʻia e ka "leaching method" ua noho ʻo 95% o ka mākeke. I kēia manawa, i ka hana aila ʻai honua, ʻo n-hexane ka mea hoʻoheheʻe nui no ke kaʻina hana o ka aila ʻai. ʻOiaʻiʻo, he helu liʻiliʻi o nā hui aila ma Iapana a me South Korea e hoʻohana i ka isohexane ma ke ʻano he mea hoʻoheheʻe.
Mai ka hopena o 1980s, ua hoʻomaka ʻo Kina e hoʻoikaika ikaika i ka hoʻohana ʻana i ka n-hexane ma ke ʻano he mea hoʻoheheʻe no ka leaching aila meaʻai.
ʻO nā hiʻohiʻona o ke kaʻina hana leaching hexane: He pōkole ka laulā hexane distillation, hoʻoheheʻe ʻia nā mea hoʻoheheʻe a me nā mea ʻino, ʻaʻole i luku ʻia nā meaʻai aila ʻaila e ka wela kiʻekiʻe, hoʻonui ʻia ka palekana o ka aila ʻai, a me ka haʻahaʻa haʻahaʻa haʻahaʻa, haʻahaʻa. koena, hua aila kiʻekiʻe, maʻalahi i ka hana unahi ʻoihana.
I kēia manawa, hoʻohana ka nui o nā hui hana ʻaila aila ʻai ʻai i loko o Kina i ka n-hexane ma ke ʻano he mea hoʻoheheʻe leaching. Hoʻopuka kēia mau hui ma mua o 90% o ka aila ʻai ma ka mākeke kūloko.
ʻO ka hoʻohana ʻana i ka n-hexane ma ke ʻano he mea hoʻoheheʻe ʻaila meaʻai he koi koʻikoʻi ia o ka mokuʻāina no ka ʻoihana hana ʻaila edible a me nā kūlana maikaʻi o ka huahana. No laila, ua lilo ka n-hexane i mea hoʻoheheʻe maʻamau i ka hana aila ʻai, ʻo ia hoʻi ka hexane kūloko a me nā haole i nā makahiki i hala. ʻOi aku ka nui o ka ʻaila solvent No. 6, butane a me nā mea hoʻoheheʻe ʻē aʻe i lilo i mau ʻano koʻikoʻi o ka ʻaila leaching solvent.
ʻO kekahi mea ʻē aʻe i loko o ka ʻoihana ʻohi aila meaʻai, loaʻa i ka n-hexane kahi kūlana kūʻokoʻa a hiki ʻole ke hoʻololi. Loaʻa iā N-hexane ka inoa o "ke aliʻi o ka ʻohi". I kēia manawa, ʻaʻohe mea hoʻoheheʻe i hiki ke ʻoi aku ma mua o ka n-hexane i ka unuhi.