Njira yochotsera madzi ndi mpweya wa asidi pogwiritsa ntchito gasi lachilengedwe

Kukonza gasi lachilengedwe ndi njira yochotsera nthunzi ya madzi, hydrogen sulfide, mercaptan, ndi carbon dioxide kuchokera ku gasi lachilengedwe. Zipangizo zazikulu zikuphatikizapo chipinda chochepetsera madzi m'thupi, chipangizo chochotsera sulfure, chipangizo chochotsera mpweya m'thupindi kubwezeretsa kwa hydrocarbon pang'ono gawo.

Kusowa madzi m'thupi

Njira zomwe zimagwiritsidwa ntchito kwambiri pa madzi achilengedwe zimaphatikizapo kuzizira kwa kutentha kochepa, kuyamwa kolimba, kuyamwa madzi, ndi njira zogwiritsira ntchito mankhwala.

Njira yosefera ya maselo ndi njira yozama yochotsera madzi m'thupi yomwe imagwiritsidwa ntchito kwambiri pogawa mpweya wachilengedwe wozizira kwambiri, monga kubwezeretsa mpweya wachilengedwe wochotsa madzi m'thupi (NGL) ndi njira zochotsera madzi m'thupi popanga mpweya wachilengedwe wosungunuka (LNG). Kuphatikiza apo, kuchepa madzi m'thupi pogwiritsa ntchito sieve ya molecular sieve kumafunikanso popanga mpweya wachilengedwe wopanikizika womwe umagwiritsidwa ntchito ngati mafuta a magalimoto.

The Njira yochepetsera madzi m'thupi ya TEG Ndi yoyenera kusowa madzi m'thupi chifukwa cha mpweya wachilengedwe komanso kuchuluka kwa madzi m'thupi komanso kuchepetsa mame.

Kuchotsa CO2

Pali njira ziwiri zazikulu zochotsera CO2 mu mpweya wachilengedwe: njira yoyamwitsa zosungunulira ndi njira yoyamwitsa.

Njira yodziwika bwino yogwiritsira ntchito poyamwa zosungunulira ndi yankho la MDEA, ndipo dongosololi limakhala ndi nsanja yoyamwa ndi nsanja yokonzanso.

Kuchotsa mpweya m'thupi (PSA decarbonization) ndi mtundu wa njira yotsamira mpweya, makamaka pogwiritsa ntchito ukadaulo wotsamira mpweya wothamanga, womwe umathandiza kulekanitsa mpweya ndi kuuyeretsa mwa kusintha nthawi ndi nthawi mikhalidwe ya kupanikizika.

Kuchotsa sulfure

Pali njira ziwiri zazikulu zochotsera mpweya wachilengedwe: kuchotsa mpweya wouma ndi kuchotsa mpweya wonyowa.

The njira ya amine imagwira ntchito ngati mpweya wachilengedwe uli ndi H2S yochepa komanso chiŵerengero cha CO2/H2S chapamwamba, koma kuchuluka kwa CO2 sikuli kwakukulu kwambiri ndipo sikufuna kuchotsedwa kwakuya kwa CO2. Njira imeneyi ingachotse bwino H2S ndi CO2 nthawi imodzi.

Njira yosefera ya mamolekyu imagwiritsidwa ntchito kwambiri pa ntchito zomwe zimafuna kulondola kwakukulu kwa desulfurization kapena kuchuluka kochepa kwa madzi.

The Njira ya LO-CAT imagwiritsa ntchito madzi opangidwa ndi sulfates, complexed iron, zowonjezera (zopangira zinthu zosungunulira, zochotsera poizoni, ndi zowononga fungicides) kuti ichotse poizoni. Njira ya Lo-Cat ndi yoyenera pochiza mpweya wa asidi wolekanitsidwa ndi mankhwala kapena njira zoyamwitsa thupi. Chifukwa cha njira zake zosiyanasiyana zokonzera, kusinthasintha kwakukulu pakugwira ntchito, kusankha bwino, komanso kusamala chilengedwe, yakhala ukadaulo wodziwika bwino wa njira zazing'ono zobwezeretsa sulfure.

Kuchotsa Mercaptan

Kuchotsa mercaptan pogwiritsa ntchito mpweya wachilengedwe nthawi zambiri kumagwiritsa ntchito njira ya sulfinol ndi njira ya hydrodesulfurization yochotsera mercaptan.

Njira ya sulfinol ili ndi ubwino wogwiritsa ntchito mphamvu zochepa, kuchotsa sulfure yachilengedwe, mphamvu yayikulu yogwiritsira ntchito zida, dzimbiri lopepuka, thovu lochepa, komanso kuwonongeka kwa zosungunulira zopepuka. Ndi yoyenera makamaka pamene mphamvu yochepa ya mpweya wa acidic mu mpweya wodyetsa ili yokwera. Njirayi singathe kupangitsa kuti mpweya woipa uchotsedwe kwambiri ndipo imagwiritsidwa ntchito kwambiri pochotsa sulfure wosaphika. Iyenera kugwiritsidwa ntchito limodzi ndi njira zina.

Njira yochotsera mercaptan pogwiritsa ntchito hydrodesulfurization imasintha sulfure yachilengedwe kukhala sulfure yopanda organic, kenako imalekanitsa sulfure yopanda organic pogwiritsa ntchito njira yotsatsira.

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