Mpweya wachilengedwe wochotsedwawo uli ndi mpweya wa asidi wa CO2, womwe ungayambitse mavuto monga kuchepa kwa mphamvu ya ma calories ndi dzimbiri la mapaipi. Chifukwa chake, chithandizo cha decarbonization chikufunika musananyamule ndikugwiritsa ntchito mapaipi.
Malinga ndi njira yowerengera mphamvu ya gasi wachilengedwe mu muyezo wa dziko (GB/T 11062-2014), zitha kuwerengedwa kuti 10mol% CO2 idzachepetsa mphamvu ya methane ndi pafupifupi 9.80% pa mita imodzi iliyonse. CO2 ikagwirizana ndi nthunzi ya madzi ndipo ili ndi mphamvu yochepa yoposa 207kPa, imayambitsa dzimbiri lalikulu pazida ndi mapaipi, ndipo njira zina zopewera dzimbiri ziyenera kutengedwa. Chifukwa chake, gasi wachilengedwe ayenera kuchotsedwa mwamphamvu CO2 asananyamulidwe kupita ku mapaipi amalonda.
Njira ya MDEA imagwiritsidwa ntchito kuchotsa CO2 mu gasi wachilengedwe.
Kapangidwe ka thupi ka MDEA ndi mfundo ya decarburization
MDEA, dzina la sayansi N -methyldiethanolamine, ndi madzi opanda mtundu kapena achikasu pang'ono okhuthala.
Fomula ya maselo: CH3N(CH2CH2OH)2,
Malo otentha: 246~249 ℃ /760mmhg; mphamvu yokoka yeniyeni: 1.0425g/ml (20 ℃);
Malo oziziritsira: -21 ℃ (kuyera 99%); kukhuthala: 101Cp (20 ℃);
Zitha kusakanikirana mosavuta ndi madzi, ethanol, ether, ndi zina zotero; alkaline pang'ono m'madzi; mankhwala amachitika mu acid carbon dioxide ndi hydrogen sulfide gasi, ndipo pakapanikizika kwambiri, carbon dioxide ndi hydrogen sulfide gasi zimakhala zapamwamba. Chifukwa chake njira yonse yoyamwitsa ndi njira yoyamwitsa thupi ndi mankhwala.
Madzi olemera a MDEA akatenga hydrogen sulfide ndi carbon dioxide amalowa mu thanki ya flash kuti atulutse flash ya vacuum, kenako amatumizidwa ku nsanja yokonzanso. Madzi olemerawo amatenthedwa ndikuwola pansi pa nsanja kuti atulutse carbon dioxide ndi hydrogen sulfide kwathunthu. Nthawi yomweyo, mpweya womwe uli pansi pa nsanja umakwera kuti upange mphamvu yachiwiri yochotsa madzi olemera pamwamba pa nsanja. Chifukwa chake njira yonse yokonzanso ndi njira yokonzanso thupi ndi mankhwala. Machitidwe enieni a mankhwala ndi awa:
R2R'N + H2S R2R'NH +HS (kuchitapo kanthu nthawi yomweyo)
R2R'N+CO2+ H2O R2R'NH +HCO3 (kuchitapo kanthu pang'onopang'ono)
Hengzhong ndi katswiri pa chithandizo cha zitsime za mpweya, kuyeretsa mpweya wachilengedwe, Kubwezeretsa kwa LPG, Chomera cha LNG ndi seti ya jenereta ya gasi lachilengedwe.
Lumikizanani nafe:
Sichuan Hengzhong Automation Equipment Co., Ltd.
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Nthawi yotumizira: Disembala-03-2023