Iyunithi Yokususa I-Skid Gas Egibele I-Skid Ishintsha Umnotho Wangaphambi Kokwelashwa Kwezitshalo ze-LNG
Entuthukweni enkulu yomkhakha wegesi ophakathi nendawo, isizukulwane esisha se Iyunithi yokususa i-gas efakwe e-skid iqashwe esitshalweni se-LNG esogwini eningizimu yeShayina, okubonisa ukuthi ukuklama okunesimo esilinganiselwe kunganciphisa kokubili izindleko zezimali kanye nesikhathi sephrojekthi ngenkathi kulethwa izinga lomhlaba wonke. Ukususwa kwe-H2S kusuka ku-ga yemvelos futhi kuhlanganisiwe ukuphelelwa amanzi emzimbeni ngegesi yemvelo esitimeleni esisodwa, esincane.
Iyunithi yokususa i-gas mounted skid desulfurization, eyenziwe ngaphandle kwendawo futhi yathunyelwa njengemojuli ehlanganiswe ngokugcwele, ihlanganisa i-amine based absorption loop ne-downstream glycol contactor. Umsebenzi wayo oyinhloko Ukususwa kwe-H2S kugesi yemvelo—ukufinyelela amazinga okukhipha ngaphansi kwama-3 ppm kusuka kokudla okuqukethe kufika ku-2.5 mol% i-hydrogen sulfide—kusetshenziswa isinyibilikisi se-MDEA esakhiwe ngendlela ekhethayo esisusa amagesi e-asidi ngenkathi sinciphisa ukumuncwa kwama-hydrocarbon. Lokhu kususwa kwesibabule okusebenzayo okuphezulu kulandelwa yi-inboard ukuphelelwa amanzi emzimbeni ngegesi yemvelo ingxenye, lapho i-triethylene glycol (TEG) inciphisa khona okuqukethwe kwamanzi kube ngaphansi kuka-0.1 lb/MMscf, okuqinisekisa ukuthi igesi elashwe ihlangabezana nemingcele eqinile yomswakama kanye nesibabule edingekayo ukuze kuncibilike i-cryogenic liquefaction.
Kwabasebenzi besimanje Isitshalo se-LNG Uma kuziwa ezikhungweni, izinzuzo zendlela yokushelela ziyashintsha. Izinhlelo zendabuko ezakhiwe ngezinti zivame ukudinga izinyanga ezingu-18-24 zokwakhiwa endaweni, kodwa le yunithi eyakhiwe kusengaphambili ingafakwa futhi iqashwe zingakapheli amasonto ayi-10. Ngaphezu kwalokho, umklamo ohlanganisiwe uqeda ukuxhuma amapayipi futhi unciphisa cishe u-40%, inzuzo ebalulekile yokwandiswa ezindaweni zokugcina eziminyene.
“Njengoba amanani kaphethiloli eshintshashintsha kanye nemingcele yoketshezi ingaphansi kwengcindezi, iyunithi yokususa i-Skid gas desulfurization inikeza ikhambi elisheshayo elingaphazamisi ukusebenza kahle,” kusho umphathi wephrojekthi ohilelekile ekuqalisweni komsebenzi. “Isingatha kokubili Ukususwa kwe-H2S kugesi yemvelo futhi ukuphelelwa amanzi emzimbeni ngegesi yemvelo ngenqubo eyodwa engenamthungo, ngakho-ke okuphakelayo kuya Isitshalo se-LNG uhlala ekulungele ukukhala.
Idatha yokuqala yokusebenza evela esikhungweni esingamathani ayizigidi ezi-5 ngonyaka ikhombisa ukuthi le yunithi ifinyelele ukusebenza kahle kokususa isibabule okungu-99.7% kanye nokunciphisa iphuzu lamazolo okuzinzile, ngisho nangesikhathi sezimo zokuncishiswa. Isitshalo se-LNG Umthamo wamandla ukhula nge-tpa engaphezu kwezigidi ezingu-70 emjikelezweni ka-2026-2028, abahlaziyi bemboni babikezela ukuthi isidingo samayunithi okususa i-sulfurization egesi afakwe kwi-skid asezingeni eliphezulu azodlula izinhlelo zendabuko ezakhiwe ensimini, abeke lobu buchwepheshe njengendinganiso entsha yokwelashwa kwegesi okusheshayo.
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