MDEA mau waiwai kino a mekumukānāwai decarburizationno ke kinoea maoli
ʻO MDEA, ka inoa ʻepekema N -methyldiethanolamine, he wai ʻeleʻele ʻole a melemele iki paha.
Huina mole: CH3N(CH2CH2OH)2 ,
Puni paila: 246~249 ℃ /760mmhg ; 'umekaumaha kiko'ī: 1.0425g/ml (20 ℃);
Wehe hau: -21 ℃ (maemae 99%); viscosity: 101Cp (20 ℃);
Hiki ke maʻalahi me ka wai, ethanol, ether, etc.; alkaline nawaliwali i ka wai; E hiki mai ana ka hopena kemika i loko o ka waikawa carbon dioxide a me ke kinoea hydrogen sulfide, a ma ke kaomi kiʻekiʻe, ʻoi aku ka kiʻekiʻe o ke kinoea carbon dioxide a me ke kinoea hydrogen sulfide No laila ʻo ke kaʻina holoʻokoʻa holoʻokoʻa ke kaʻina hana kino a me ke kaʻina.
ʻO ka wai momona MDEA ma hope o ke komo ʻana i ka hydrogen sulfide a me ka carbon dioxide e komo i loko o ka pahu uila no ka hoʻoheheʻe ʻana o ka uila, a laila hoʻouna ʻia i ka hale kiaʻi hou. Hoʻomaʻamaʻa ʻia ka wai waiwai a hoʻoheheʻe ʻia ma ka lalo o ka hale kiaʻi e hoʻokuʻu loa i ka carbon dioxide a me ka hydrogen sulfide. I ka manawa like, piʻi ke kinoea ma lalo o ka hale kiaʻi e hana i kahi hopena wehe lua ma luna o ka wai waiwai ma luna o ka hale kiaʻi.; no laila, ʻo ke kaʻina hana hou a pau, ʻo ia ke kaʻina hana hou kino a me ke kemika. ʻO ka hopena kemika kikoʻī penei:
R2R'N + H2S R2R'NH +HS (pane koke)
R2R'N+CO2+ H2O R2R'NH +HCO3 (ka hopena lohi)
ʻO ka absorption a me ka hana houkumukānāwai decarburizationno ke kinoea maoli
Ma hope o ke komo ʻana o ke kinoea hānai i ka palena pākaukau, hoʻoneʻe ʻia nā haumia a me nā droplets i loko o ke kinoea e ka mea hoʻokaʻawale kānana, a komo i ka hale kiaʻi absorption mai lalo. I loko o ka hale kiaʻi, ua hoʻopili ʻia me ka hoʻonā MDEA i hoʻoheheʻe ʻia mai luna. ʻO ka MDEA aqueous solution (amine lean solution) e komo i ka hydrogen sulfide a me carbon dioxide i loko o ke kinoea maoli, no laila e hoʻoneʻe ʻia ka hydrogen sulfide a me ka carbon dioxide i loko o ke kinoea hānai e hoʻokō i nā koi ʻenehana o ka mea nona. Hoʻouna ʻia ke kinoea hoʻomaʻemaʻe ma waho o ka palena ma o ka mea hoʻokaʻawale kinoea huahana ma hope o ka haʻalele ʻana i ka piko o ka hale kiaʻi absorption.
Ma lalo o ka mana o ka pae wai hoʻoponopono valve, ka pae wai ma lalo o ka hale kiaʻi absorption e lawe i ka amine waiwai i ka pahu flash. ʻO ka amine waiwai mai ka lalo o ka hale kiaʻi absorption e komo i ka pahu uila. Hoʻopau ʻia ka hapa nui o nā hydrocarbons i loko o ka amine waiwai i ka pae kinoea uila. Ma lalo o ka mana o ka pahu hoʻoponopono kaomi, hoʻihoʻi ʻia ka mahu uila i ka ʻōnaehana kinoea wahie. Hoʻouna ʻia ka wai amine waiwai i ka lean/rich amine heat exchanger. ʻO ka amine lean wela mai ka hale kiaʻi hou e wela i ka amine waiwai mai ka pahu uila, a laila komo ka amine waiwai i ka hale kiaʻi amine regeneration.
ʻO ka mahu i hana ʻia e ka reboiler ma lalo o ka hale kiaʻi hoʻohou amine e hoʻopili i ka hoʻonā waiwai amine countercurrent, e kāʻili ana i ke kinoea waikawa mai ia mea, e hoʻopau ai i ka hana hou ʻana o ka amine waiwai. Ma lalo o ka mana o ka pae wai hoʻoponopono valve ma lalo o ka amine regeneration hale kiaʻi, ka wela lean amine solution e kahe ana i ka lean/waiwai amine heat exchanger. ʻO ka lean amine booster pump e kaomi i ka amine i loko o ka amine buffer tank e 1.0mpa a hoʻouna iā ia i ka hale kiaʻi absorption. Hoʻokomo ʻia kahi valve hoʻoponopono kahe ma ka pipeline amine lean i ka hale kiaʻi absorption, kahi e hoʻokele ʻia ai ka lean amine i loko o ka hale kiaʻi absorption.
