Ma lalo o ke kaomi mau, ke hiki i ka 95.57% (w/w) ka hui ʻana o ka waiʻona me 97.2% (v/v), ua hoʻokumu ʻia kahi hui coboiling ma kēlā ʻano, ʻo ia hoʻi ka hoʻohana ʻana i kahi ʻano distillation maʻamau ʻaʻole hiki ke hiki. ka maʻemaʻe waiʻona ma luna o 97.2% (v / v).
No ka hana ʻana i ka waiʻona anhydrous hoʻomaʻemaʻe kiʻekiʻe, e hoʻohana i ka kānana molecular pressure adsorption (PSA) molecular sieve, me 99.5% ka hoʻopaʻa ʻana i 99.98% (v/v) ma hope o ka dehydration a me ka condensation. Hoʻohālikelike ʻia me ke ʻano kuʻuna ternary azeotropic distillation, me ka hopena dehydration maikaʻi, kiʻekiʻe o ka huahana, ʻenehana kiʻekiʻe a me ka hoʻohana haʻahaʻa haʻahaʻa.
ʻO ke ʻano o ka ethanol dehydration molecular sieve adsorption kahi ʻenehana no ka hoʻomoʻa ʻana i ka wai o ka ethanol hānai. Ke hoʻohana nei i kahi kānana mole o JZ-ZAC, ʻo ka mole wai ka 3A, a ʻo ka 2.8A, ethanol mole he 4.4A. No ka mea, ʻoi aku ka nui o nā molekole ethanol ma mua o nā molekole wai, hiki ke hoʻopili ʻia nā molekala wai i loko o ka lua, ʻaʻole hiki ke hoʻopili ʻia nā molekala ethanol. Ke hoʻopili pono ʻia ka ethanol i loko o ka wai ma o ke kānana molekika, hoʻopili ka molecular sieve i nā ʻāpana wai, aʻo ka mahu ethanol e hele i ka moena adsorption a lilo i huahana ethanol maʻemaʻe.
Nā huahana pili:JZ-ZAC molecular kānana