Iyunithi yokususa i-Skid Gas Desulfurization iguqula uqoqosho lwangaphambi konyango lwezityalo ze-LNG
Kuphuhliso olukhulu kwicandelo legesi eliphakathi, isizukulwana esitsha se Iyunithi yokususa i-sulfurization yegesi efakwe kwi-skid iye yagunyaziswa kwisityalo se-LNG esiselunxwemeni kumazantsi eTshayina, nto leyo ebonisa ukuba uyilo lwemodyuli lunokunciphisa iindleko zemali kunye nexesha leprojekthi ngelixa lubonelela ngeenkonzo zodidi lwehlabathi. Ukususwa kwe-H2S kwi-ga yendalos kwaye idibeneyo ukuphelelwa ngamanzi emzimbeni ngegesi yendalo kuloliwe omnye, omncinci.
Iyunithi yokususa i-sulfurization yegesi efakwe kwi-Skid, eyenziwe ngaphandle kwendawo yaza yathunyelwa njengemodyuli ehlanganiswe ngokupheleleyo, idibanisa i-amine-based absorption loop kunye ne-downstream glycol contactor. Umsebenzi wayo oyintloko kukwenza oku. Ukususwa kwe-H2S kwigesi yendalo—ukufikelela kumanqanaba okukhupha amanzi angaphantsi kwe-3 ppm kwii-feeds eziqulethe ukuya kuthi ga kwi-2.5 mol% ye-hydrogen sulfide—kusebenzisa isinyibilikisi se-MDEA esenziweyo esisusa iigesi ze-asidi ngokukhetha ngelixa sinciphisa ukufunxwa kwee-hydrocarbons. Oku kususwa kwe-sulfurization esebenza kakuhle kulandelwa yi-inboard ukuphelelwa ngamanzi emzimbeni ngegesi yendalo kwicandelo, apho i-triethylene glycol (TEG) inciphisa umxholo wamanzi ube ngaphantsi kwe-0.1 lb/MMscf, ukuqinisekisa ukuba igesi ecociweyo ihlangabezana nemida eqinileyo yokufuma kunye nesalfure efunekayo ukuze kubekho ulwelo oluyi-cryogenic.
Kwabaqhubi bezinto zanamhlanje Isityalo se-LNG Nangona kunjalo, izibonelelo zendlela yokutyibilika ziyatshintsha. Iinkqubo zemveli ezakhiwe ngezinti zihlala zifuna iinyanga ezili-18-24 zokwakhiwa kwindawo, kodwa le yunithi yenziwe kwangaphambili ingafakwa kwaye isebenze kwiiveki ezili-10. Ngaphezu koko, uyilo oludibeneyo lususa ukudityaniswa kwemibhobho kwaye lunciphisa umgama opheleleyo phantse ngama-40%, inzuzo ebalulekileyo yokwandiswa kwiindawo zesiphelo ezixineneyo.
“Ngenxa yokuba amaxabiso egesi etshintshatshintsha kwaye imida yolwelo iphantsi koxinzelelo, iyunithi yokususa i-sulfurization yegesi efakwe kwi-Skid inika isisombululo esikhawulezayo esingayi kuphazamisani nokusebenza,” utshilo umphathi weprojekthi obandakanyekayo ekuqalisweni. “Iphatha zombini ezi zinto Ukususwa kwe-H2S kwigesi yendalo kwaye ukuphelelwa ngamanzi emzimbeni ngegesi yendalo kwinkqubo enye engenamthungo, ngoko ke i-feed eya kwi Isityalo se-LNG uhlala ekulungele ukulila.
Idatha yokuqala yokusebenza evela kwiziko eliziitoni ezi-5 zezigidi ngonyaka ibonisa ukuba iyunithi ifikelele kwi-99.7% yokususa isalfure kakuhle kunye nokunciphisa i-dewpoint dew point, nangona iimeko zokurhoxiswa kwenkunkuma ziphantsi. Isityalo se-LNG Umthamo wombane uyanda nge-tpa engaphezulu kwezigidi ezingama-70 kumjikelo ka-2026-2028, abahlalutyi beshishini baqikelela ukuba imfuno yeeyunithi zokukhupha i-sulfurization zegesi ezifakwe kwi-skid ezikumgangatho ophezulu ziya kudlula iinkqubo zemveli ezakhiwe ebaleni, zibeka obu buchwephesha njengomgangatho omtsha wonyango lwegesi olukhawulezileyo.
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