Ko te Dimethyl carbonate he puhui pararopi nui e whakamahia nuitia ana i roto i te umanga matū, rongoa, hikohiko me etahi atu mara. Ma tenei tuhinga e whakaatu te tukanga whakaputa me te tikanga whakarite o te dimethyl carbonate.
1, Te tukanga whakaputa o te dimethyl carbonate
Ko te tukanga whakaputa o te dimethyl carbonate ka wehea kia rua nga momo: tikanga matū me te tikanga tinana.
1) Tikanga matū
Ko te whārite tauhohenga matū o te dimethyl carbonate ko: CH3OH+CO2 → CH3OCO2CH3
Ko te Methanol te rauemi mata mo te dimethyl carbonate, a ko te hauwao waro te reactant. Ko te tukanga tauhohenga e hiahia ana he whakakorikori.
He momo whakakōkī, tae atu ki te konutai waihā, te konupūmā waikura, te konukura waikura, me te warowaihā. Ko te haukawa waro he pai rawa atu te whakangao, engari ko te kowhiringa o te whakakorikori me whai whakaaro ano ki nga ahuatanga penei i te utu me te taiao.
Ko te tukanga whakaputa o te dimethyl carbonate te nuinga kei roto i nga waahanga penei i te pure methanol, te waiora hāora, te tauhohenga whakawera, te wehenga/whakawhanaunga, me etahi atu. mā.
2)Te tikanga tinana
E rua nga tikanga a-tinana matua mo te whakaputa dimethyl carbonate: te tikanga absorption me te tikanga compression.
Ko te tikanga whakauru ka whakamahi i te methanol hei ngongo me te tauhohe ki te CO2 i te iti o te mahana ki te whakaputa i te warowaikawa dimethyl. Ka taea te whakamahi ano i te mimiti, ka taea hoki te hangarua i te waro hauhaa i puta mai i te tauhohenga, engari he puhoi te tere o te tauhohenga me te nui o te whakapau kaha.
Ka whakamahia e te ture compression nga ahuatanga o te CO2 kia pa atu ki te methanol i raro i te pehanga teitei, na reira ka tutuki te whakaritenga o te dimethyl carbonate. He tere te tauhohenga o tenei tikanga, engari e hiahia ana ki nga taputapu taapiri mana teitei me te utu nui.
Ko nga tikanga e rua o runga ake nei he painga me nga ngoikoretanga, ka taea te kowhiri i runga i nga hiahia tono me nga ahuatanga ohaoha.
2、 Whakaritenga mo te dimethyl carbonate
He maha nga tikanga mo te whakarite dimethyl carbonate, a ko enei e rua nga tikanga e whakamahia nuitia ana:
1) Tikanga Methanol
Koinei te tikanga e whakamahia nuitia ana mo te whakareri dimethyl carbonate. Ko nga waahanga mahi motuhake e whai ake nei:
(1) Tāpirihia te methanol me te pāhare pāporo warowaihā/konutai warowaihā, me te wera ki te pāmahana tauhohenga i te wā e whakakorikori ana;
(2) Taapirihia te CO2, haere tonu te whakaoho, ka whakamatao i muri i te otinga o te tauhohenga;
(3) Whakamahia he kohanga wehenga hei wehe i te ranunga me te whiwhi dimethyl carbonate.
Me tohu ko te pāmahana, te pehanga, te wa tauhohenga, tae atu ki te momo me te nui o te whakakorikori me whakahaere i te wa o te mahi tauhohenga hei whakapai ake i te hua me te ma.
2) Tikanga hāora hāora
I tua atu i te tikanga methanol, kei te whakamahia hoki te tikanga whakapouri hāora mo te whakarite i te dimethyl carbonate. He ngawari tenei tikanga ki te whakahaere, ka taea te mahi tonu.
Ko nga waahanga mahi motuhake e whai ake nei:
(1) Tāpirihia te methanol me te whakakōkī, te wera ki te pāmahana tauhohenga i te wā e whakakorikori ana;
(2) Tāpiri hau hāora ki te pūnaha tauhohenga me te whakaoho tonu;
(3) Whakawehea, whakamaarama, ka purea te ranunga tauhohenga kia whiwhi te dimethyl carbonate.
Me tohu ko te tikanga o te hāora hāora e hiahia ana ki te whakahaere i nga tawhā penei i te tere tuku me te pāmahana tauhohenga o te hau hāora, tae atu ki te wahanga o nga waahanga tauhohenga, hei whakapai ake i te hua me te ma.
Na roto i te whakaurunga o tenei tuhinga, ka taea e tatou te ako mo te tukanga whakaputa me nga tikanga whakarite o te dimethyl carbonate. Mai i te hanganga irapoi ki te whakamaarama taipitopito o te tukanga tauhohenga me te tikanga whakaputa, kua whakaratohia e matou he punaha matauranga whanui me te tika. Ko te tumanako ka taea e tenei tuhinga te whakahihiri i te ako me te rangahau a te hunga panui mo tenei mara.
Te wa tuku: Apr-23-2023