Njirimara MDEA Physicochemical naụkpụrụ decarburizationmaka eke gas
MDEA, aha sayensị N-methyldiethanolamine, bụ mmiri viscous na-enweghị agba ma ọ bụ ntakịrị odo odo.
Usoro ihe omimi: CH3N (CH2CH2OH) 2 ,
Isi ihe: 246 ~ 249 ℃ / 760mmhg; nnukwu ike ndọda: 1.0425g/ml (20 ℃);
Ebe na-ekpo ọkụ: -21 ℃ (dị ọcha 99%); viscosity: 101Cp (20 ℃);
Ọ nwere ike ịdị mfe nghọta na mmiri, ethanol, ether, wdg; alkaline na-adịghị ike na mmiri; mmeghachi omume kemịkalụ ga-eme na acid carbon dioxide na hydrogen sulfide gas, na nrụgide dị elu, carbon dioxide na hydrogen sulfide gas nwere elu Ya mere usoro nnabata dum bụ usoro nnabata anụ ahụ na nke kemịkal.
Mmiri mmiri MDEA bara ụba mgbe ọ nwetasịrị hydrogen sulfide na carbon dioxide na-abanye na tankị ọkụ maka ikuku ọkụ ọkụ, wee ziga ya na ụlọ elu nrụpụta. Mmiri bara ụba na-ekpo ọkụ ma mebie ya na ala ụlọ elu iji hapụ carbon dioxide na hydrogen sulfide kpamkpam. N'otu oge ahụ, gas dị na ala ụlọ elu na-ebili ka ọ na-emepụta mmetụta nkwụsị nke abụọ na mmiri mmiri bara ụba na elu ụlọ elu .; ya mere usoro mmeghari dum bụkwa usoro mmeghari nke anụ ahụ na kemịkalụ. Mmeghachi omume kemịkalụ a kapịrị ọnụ bụ nke a:
R2R'N + H2S R2R'NH +HS (mmeghachi omume ozugbo)
R2R'N+CO2+ H2O R2R'NH+HCO3 (mmeghachi omume nwayọ)
Absorption na mmeghari ohuruụkpụrụ decarburizationmaka eke gas
Mgbe gas na-eri nri na-abanye na njedebe batrị, a na-ewepụ ihe ndị na-adịghị ọcha na ụmụ irighiri mmiri na gas site na nzacha nzacha, ọ na-abanyekwa n'ụlọ elu absorption site na ala. N'ime ụlọ elu ahụ, a na-akpọtụrụ ya na ngwọta MDEA nke a fesara n'elu. Ihe ngwọta mmiri MDEA (amine lean solution) na-amịkọrọ hydrogen sulfide na carbon dioxide n'ime gas sitere n'okike, nke mere na a na-ewepụ hydrogen sulfide na carbon dioxide n'ime gas na-eri nri iji mezuo ihe achọrọ nke onye nwe ya. A na-ezipụ gas dị ọcha site na oke site na ngwaahịa gas separator mgbe ọ hapụsịrị elu ụlọ elu absorption.
N'okpuru nchịkwa nke ọkwa mmiri na-achịkwa valvụ, ọkwa mmiri mmiri dị na ala nke ụlọ elu absorption na-ebuga amin bara ụba na tankị ọkụ. Amine bara ọgaranya site na ala nke ụlọ elu absorption na-abanye na tankị ọkụ. Ọtụtụ n'ime hydrocarbons na-etinye n'ime amine bara ụba na-ekpochapụ ya na oge ọkụ ọkụ. N'okpuru njikwa valvụ na-achịkwa nrụgide, a na-eweghachite uzuoku ọkụ na sistemụ mmanụ ọkụ. A na-eziga mmiri mmiri amine bara ụba na onye na-agbanwe okpomọkụ amine dabere/ọgaranya. Amine na-ekpo ọkụ na-ekpo ọkụ site na ụlọ elu regeneration na-eme ka amine bara ụba si na tankị ọkụ, mgbe ahụ, amine bara ọgaranya na-abanye n'ụlọ elu amine regeneration.
Uzuoku sitere na reboiler na ala nke amine regeneration tower na-akpọtụrụ amine ngwọta bara ụba na-aga n'ihu, na-ewepụ gas acid na ya, si otú a na-emecha nweghachi nke amine bara ụba. N'okpuru njikwa nke ọkwa mmiri na-achịkwa valvụ dị na ala nke ụlọ nrụpụta amine, ihe ngwọta amine na-ekpo ọkụ na-ejupụta na onye na-ekpo ọkụ amine dabere/ọgaranya. Ihe mgbapụta amine dị ala na-eme ka amine dị na tank nke amine site na 1.0mpa wee ziga ya na ụlọ elu absorption. A na-etinye valvụ na-achịkwa valvụ na-eruba n'elu pipeline amine dabere na ụlọ elu nnabata, nke a na-achịkwa amine na-asọba n'ụlọ elu absorption.
