Njira za F Kusowa madzi m'thupi kwa TEG mu mpweya wachilengedwe ndi njira yachibadwa yochotsera madzi mu mpweya wachilengedwe.
Mpweya wachilengedwe wonyowa umalekanitsidwa ndi madontho a 5 μm ndi kupitirira apo kudzera mu cholekanitsa chosefera kenako n’kulowa m’chipinda cholekanitsa mpweya ndi madzi chomwe chili pansi pa nsanja yoyamwitsa ya triethylene glycol ya unit yochotsera madzi m’thupi kuti alekanitse madzi omasuka omwe angabweretsedwe mu nsanja yoyamwitsa pamene cholekanitsa chosefera chili pangozi. Chimalowa mu gawo loyamwitsa kudzera mu riser ya nsanja yoyamwitsa. Triethylene glycol yobwezeretsedwanso imalowetsedwa pamwamba pa choyamwitsa kuti ikhudze mokwanira mpweya wachilengedwe wochokera pansi kupita mmwamba pa choyamwitsa kuti isamutsidwe ndikusinthana kuti ichotse madzi. Mpweya wachilengedwe wochotsedwa chinyezi umachotsedwa ndi chosunga nthunzi cha tower top kwa madontho opitilira 5 μm a glycol ochokera mu nsanja.
Pambuyo potuluka mu nsanja, imasinthasintha kutentha ndi glycol yotentha yopanda mafuta isanalowe mu nsanja kudzera mu chosinthira kutentha cha casing kuti ichepetse kutentha kwa triethylene glycol kulowa mu nsanja. Mpweya wachilengedwe pambuyo posintha kutentha umalowa mu cholekanitsa fyuluta kuti ulekanitse glycol yonyamulidwa kenako umalowa mu pipeline yotumizira kunja. Triethylene glycol wochuluka womwe umayamwa madzi mu mpweya wachilengedwe umatuluka mu nsanja yoyamwitsa ndikulowa mu valavu yowongolera mulingo wamadzimadzi. Pambuyo pochepetsa kupsinjika, umalowa mu mbale yoziziritsira ya reflux pamwamba pa mzere wolemera wamadzimadzi osungunuka, umasinthasintha kutentha ndi nthunzi yotentha yopangidwa mu reboiler, umapereka mphamvu yozizira ya reflux pamwamba pa mzere, umatenthedwa mpaka pafupifupi 50 ℃, ndipo chitoliro chotulukira chimalowa mu thanki ya triethylene glycol flash. Glycol wochuluka umachepetsedwa ku 0.4MPa ~ 0.6MPa mu thanki ya flash, ndipo mpweya wa hydrocarbon ndi mpweya wina wosungunuka mu triethylene glycol umatuluka, womwe umagwiritsidwa ntchito ngati mpweya wamafuta woyatsa reboiler.
Madzi otchedwa triethylene glycol olemera kwambiri amalowa mu fyuluta yamakina kuti asefe zinyalala zamakina, kenako amalowa mu fyuluta ya kaboni yoyambitsidwa kuti apititse patsogolo kuyamwa ma hydrocarbons osungunuka mu triethylene glycol ndi zinthu zomwe zimawonongeka za triethylene glycol. Kenako amalowa mu mbale yotenthetsera kutentha yamadzimadzi yokhala ndi kutentha kochepa komanso kotsika kuti asinthane kutentha ndi triethylene glycol yotsika kwambiri kuchokera mu thanki yotenthetsera kutentha yomwe ili pansi pa triethylene glycol reboiler. Kutentha kumakwera kufika pa 120 ~ 130 ℃ ndikulowa mu mzere wolemera wamadzimadzi.
Mu triethylene glycol reboiler yomwe ili pansi pa distillation column, triethylene glycol imatenthedwa kufika pa 193 ℃, ndipo madzi omwe ali mu triethylene glycol amagawidwa ndikutulutsidwa kuchokera pamwamba pa distillation column kudzera mu distillation column. Lean glycol yokhala ndi kuchuluka kwa pafupifupi 99% (WT) imasefukira kuchokera ku lean liquid stripping column mu reboiler kupita ku thanki yotsika ya triethylene glycol heat exchange buffer. 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. Triethylene glycol yopanda mafuta imapopedwa mu gasi-liquid heat exchanger kunja kwa absorber ndi pampu, kuziziritsidwa ndi outlet gas heat exchanger, kenako imalowa pamwamba pa absorber kuchokera kumtunda kwa casing kuti ikwaniritse solvent circulation.
Mpweya wouma umatuluka kuchokera ku gawo la chitoliro cha mpweya wouma pamalo otulukira mpweya woyamwa mpweya ndikulowa mu chitoliro chotenthetsera mpweya wouma cha thanki yosinthira kutentha yomwe ili pansi pa chotenthetsera cha triethylene glycol. Pambuyo potenthetsera ndi triethylene glycol yopanda mafuta, imakokedwa ku 0.4MPa kudzera mu valavu yoyendetsera kuthamanga kwa mpweya wodziyendetsa yokha ndikulowa mu thanki yosungira mafuta. Pambuyo potuluka mu thanki yosungira mafuta, imagawidwa m'njira ziwiri. Njira imodzi imatenthedwa ndikulowa pansi pa gawo lotsika la chotenthetsera madzi ngati mpweya wochotsa madzi wopanda mafuta; Njira ina ndi mpweya wamafuta womwe umagwiritsidwa ntchito ngati chotenthetsera.
Nthawi yotumizira: Meyi-15-2022