Mpweya wachilengedwe wonyowa mu mkhalidwe wokhuta umalekanitsidwa ndi cholekanitsa chosefera kuti chilekanitse madontho amadzimadzi a 5 μ m ndi kupitirira apo, kenako chimalowa mchipinda cholekanitsa mpweya ndi madzi chomwe chili pansi pa Nsanja yoyamwa ya TEG (Triethylene gly) ya chipinda chochepetsera madzi m'thupi kulekanitsa madzi omasuka omwe angabweretsedwe mu nsanja yoyamwitsa pamene cholekanitsa chosefera chili pangozi. Lowani mu gawo loyamwitsa kudzera mu chokwezera cha nsanja yoyamwitsa. TEG yobwezeretsedwanso imapopedwa pamwamba pa nsanja yoyamwitsa kuti igwirizane kwathunthu ndi mpweya wachilengedwe kuchokera pansi kupita mmwamba pa nsanja yoyamwitsa kuti isamutse unyinji ndikuchotsa chinyezi. Mpweya wachilengedwe wouma umatulutsidwa mu nsanjayo mutachotsa madontho opitilira 5 μ m a glycol kudzera mu chogwirira cha nthunzi cha pamwamba pa nsanja.
Pambuyo potuluka mu nsanja, kutentha kumasinthidwa ndi glycol yotentha yopanda mafuta asanalowe mu nsanja kudzera mu chosinthira kutentha cha tubular kuti achepetse kutentha kwa TEG kulowa mu nsanja. Pambuyo posintha kutentha, mpweya wachilengedwe umalowa mu cholekanitsa fyuluta kuti ulekanitse glycol yonyamula kenako umalowa muipi yotumizira kunja. TEG yolemera, yomwe imatenga chinyezi mu mpweya wachilengedwe, imatuluka mu nsanja yoyamwa ndikulowa mu valavu yowongolera mulingo wamadzimadzi. Pambuyo pochepetsa kupsinjika, imalowa mu mbale yoziziritsira ya reflux pamwamba pa mzere wolemera wamadzimadzi kuti isinthane kutentha ndi nthunzi yotentha yopangidwa mu reboiler. Pambuyo popereka mphamvu yozizira ya reflux pamwamba pa mzere, TEG yolemera imatenthedwa mpaka pafupifupi 50 ℃. Chubu chotulukira chimalowa mu thanki ya TEG flash. Glycol yolemera imachepetsedwa ku 0.4MPa ~ 0.6MPa mu thanki ya flash. Mpweya wa hydrocarbon ndi mpweya wina wosungunuka mu TEG umatenthedwa, ndipo mpweya uwu umagwiritsidwa ntchito ngati mpweya wamafuta pakuyatsa reboiler.
Pambuyo powala, madzi olemera a TEG amalowa mu fyuluta yamakina kuti asefe zinyalala zamakina, kenako amalowa mu fyuluta ya kaboni yoyambitsidwa kuti apititse patsogolo kuyamwa zinthu zama hydrocarbon zomwe zimasungunuka mu TEG ndi zinthu zowononga za TEG. Kenako imalowa mu chosinthira kutentha chamadzimadzi cholemera komanso chopanda mphamvu cha mtundu wa mbale kuti isinthane kutentha ndi TEG yotsika kwambiri kuchokera ku thanki yotsika ya chosinthira kutentha cha TEG reboiler. Kutentha kwa kusinthana kutentha kumakwera kufika pa 120 ~ 130 ℃ ndikulowa mu mzere wolemera wa distillation wamadzimadzi.
Mu TEG reboiler pansi pa distillation column, TEG imatenthedwa kufika pa 193 ℃, ndipo madzi omwe ali mu TEG amagawidwa ndikutulutsidwa kuchokera pamwamba pa distillation column. Kuchuluka kwa pafupifupi 99% (WT) kwa lean glycol kumasefukira mu thanki yotsika ya TEG heat exchange buffer ndi lean liquid stripping column mu reboiler. Pansi pa mphamvu ya mpweya wouma mu lean liquid stripping column, kuchuluka kwa lean glycol kulowa mu heat exchange buffer buffer kumatha kufika 99.5% ~ 99.8%.
Mu thanki ya glycol buffer, glycol yopanda mafuta yokhala ndi kutentha kwa pafupifupi 193 ℃ imalowa mu glycol heat exchanger yolemera komanso yosauka kuti isinthane kutentha ndi glycol yolemera. Kutentha kukatsika kufika pa 100 ℃, imalowa mu pampu. TEG yamadzimadzi yopanda mafuta imapopedwa mu external gas-liquid heat exchanger ya absorption tower ndi pampu. Pambuyo poziziritsa ndi gasi heat exchanger kuchokera mu nsanja, imalowa pamwamba pa nsanja yoyamwitsa kuchokera kumtunda kwa chitoliro choyikiramo kuti ikwaniritse solvent circulation.
Mpweya wouma umatuluka kuchokera ku gawo la mpweya wouma pamalo otulukira nsanjika yoyamwitsa, ndikulowa mu chitoliro chotenthetsera mpweya wouma cha thanki yosinthira kutentha yomwe ili pansi pa chosinthira magetsi cha TEG. Pambuyo potenthetsera ndi TEG yopanda mafuta, imakokedwa ku 0.4MPa ndi valavu yoyendetsera kuthamanga kwa mpweya kenako imalowa mu thanki yosungira mafuta. Pambuyo potuluka mu thanki yosungira mafuta, imagawidwa m'njira ziwiri, imodzi yomwe imatenthedwa ndikulowa pansi pa gawo lotsitsa madzi ngati mpweya wochotsa madzi, ndi inayo ngati mpweya wamafuta wa chosinthira magetsi. Iyi ndi njira ya madzi ochotsa mpweya wachilengedwe.
Nthawi yotumizira: Feb-26-2023