MDEA āhuatanga Ahupūngao meparau tumu decarburizationmo te hau maori
Ko te MDEA, te ingoa pūtaiao N -methyldiethanolamine, he wai karekau he tae, he kowhai paku ranei.
tātai rāpoi: CH3N(CH2CH2OH)2 ,
Kohuatanga: 246~249 ℃ /760mmhg ; taumaha motuhake: 1.0425g/ml (20 ℃);
Wāhi mīti: -21 ℃ (mā 99%) ); pokey: 101Cp (20 ℃);
Ka ngawari te mimi ki te wai, te waihano, te etera, me etahi atu; kawakore i roto i te wai; ka puta te tauhohenga matū i roto i te waikawa waro hauwai me te hauwai sulfide, a, ki te teitei ake te pehanga, ka nui ake te waro hauhaa me te hauwai sulfide No reira ko te katoa o te whakaurunga ko te tukanga whakauru tinana me te matū.
Ko te wai nui o te MDEA i muri i te ngongo i te hauwai sulfide me te waro hauhaa ka uru ki roto i te taika uira mo te whakaetonga uira korehau, katahi ka tukuna ki te pourewa whakaora. Ka whakamahanahia te wai nui, ka pirau ki te pito o raro o te pourewa ki te tuku katoa i te hauhā me te hauwai sulfide. I te wa ano, ka piki te hau i te raro o te pourewa ki te hanga i te paanga tihorea tuarua i runga i te wai taonga i te tihi o te pourewa.; no reira ko te katoa o nga mahi whakaora ko te tikanga whakaora tinana me te matū. Ko te tauhohenga matū motuhake e whai ake nei:
R2R'N + H2S R2R'NH +HS (tauhohenga inamata)
R2R'N+CO2+ H2O R2R'NH +HCO3 (tauhohenga puhoi)
Te whakauru me te whakahouparau tumu decarburizationmo te hau maori
I muri i te urunga o te hau kai ki te rohe o te pākahiko, ka tangohia nga poke me nga pata i roto i te hau e te kaiwhakawehe tātari, ka uru atu ki te pourewa absorption mai i raro. I roto i te pourewa, ka whakapaa atu ki te wairewa MDEA i maputia mai i runga. Ko te wairewa aqueous MDEA (amine lean solution) ka tango i te hauwai sulfide me te waro i roto i te hau maori, kia nekehia atu te hauwai sulfide me te hauhau i roto i te hau whangai ki te whakatutuki i nga whakaritenga hangarau a te rangatira. Ka tukuna te hau parakore ki waho o te rohe na roto i te wehenga hau hua i muri i te wehe atu i te tihi o te pourewa absorption.
I raro i te mana whakahaere o te taumata wai, ka tukuna e te taumata wai kei raro o te pourewa absorption te amine taonga ki te tank flash. Ko te amine taonga mai i te raro o te pourewa absorption ka uru ki te tank flash. Ko te nuinga o nga waiwaro ka uru ki roto ki te amine whai rawa ka whakakorehia ki te wahanga hau hiko. I raro i te mana o te pehanga whakatau, ka hoki mai te mamaoa uira ki te punaha hau wahie. Ka tukuna te wai amine whai rawa ki te whakawhiti wera amine kikokore. Ko te amine kikokore wera mai i te pourewa whakahou ka whakamahana i te amine taonga mai i te tank flash, katahi ka uru te amine taonga ki te pourewa whakaora amine.
Ko te mamaoa i hangaia e te reboiler i raro o te pourewa whakaora amine ka whakapiri atu ki te wairewa amine whai rawa atu, ka tango i te hau waikawa mai i a ia, na reira ka oti te whakaoranga o te amine taonga. I raro i te mana whakahaere o te reera o te wai i raro o te pourewa whakahou amine, ka rere te wairewa amine wera ki te whakawhiti wera amine hiroki / taonga. Ka pehia e te papu amine booster te amine i roto i te tank buffer amine ma te 1.0mpa ka tukuna ki te pourewa absorption. Ka utaina he takirere whakahaere rere ki runga i te pipeline amine hiroki ki te pourewa absorption, e rere ai te amine hiroki ki roto i te pourewa absorption.
