Ikhwalithi Ephakeme Abahlinzeki Bezimboni Zase-China LNG - I-skid ye-Liquefaction yegesi yemvelo - Rongteng

Incazelo

I-Liquefaction gas yemvelo, ebizwa ngokuthi i-LNG, ifinyeza igesi yemvelo ibe uketshezi ngokupholisa igesi yemvelo eyigesi ngaphansi kwengcindezi evamile ukuze - 162 ℃. I-liquefaction yegesi yemvelo ingasindisa kakhulu indawo yokugcina neyokuthutha, futhi inezinzuzo zenani elikhulu le-calorific, ukusebenza okuphezulu, okuhambisana nokulinganisela kokulawulwa kwemithwalo yasemadolobheni, okuhambisana nokuvikelwa kwemvelo, ukunciphisa ukungcoliswa kwedolobha nokunye.

I-Liquefaction iwumgogodla wokukhiqizwa kwe-LNG. Njengamanje, izinqubo ezivuthiwe zegesi yemvelo zokuncibilika ikakhulukazi zifaka inqubo yokuncibilika kwe-cascade, inqubo yokuxutshwa kwesiqandisi esiqandisini kanye nenqubo yokuncibilika nge-expander.

Inqubo ye-Cascade ye-liquefaction yegesi yemvelo isebenzisa amaphuzu ahlukene abilayo esiqandisini ngaphansi kwengcindezi evamile ukuze kuncishiswe izinga lokushisa lesiqandisi isinyathelo ngesinyathelo ukuze kufezwe injongo yokuncibilika kwegesi yemvelo.

Umjikelezo wesiqandisi oxubile (MRC) inqubo lapho izinhlobo ezingaphezu kwezinhlanu zeziqandisi ezixube izingxenye eziningi, ezifana ne-C1 ~ C5 Hydrocarbons kanye ne-N2, zisetshenziswa njengoketshezi olusebenzayo ukuze kufinyaniswe, kuhwamuke futhi kunwetshwe isinyathelo ngesinyathelo ukuze kutholwe umthamo wesiqandisi emazingeni okushisa ahlukene, bese kuthi kancane kancane kuphole futhi kuncibilike igesi yemvelo. I-Mixed refrigerant liquefaction process ihlukaniswe yaba izinhlobo eziningi ezahlukene zomjikelezo wesiqandisi.

Inqubo ye-liquefaction ene-expander isho inqubo yokuncibilika kwegesi yemvelo ngokusebenzisa isiqandisi esinengcindezi ephezulu ukuze sibone ukuhlehla kwesiqandisi somjikelezo we-Claude esinokunwetshwa kwe-adiabatic kwe-turbo expander.

Uhlelo lwenqubo ikakhulukazi luhlanganisa: iyunithi yokulawula ingcindezi yegesi ephakelayo kanye neyunithi yokulinganisa, iyunithi yokuhlanza igesi yemvelo kanye neyunithi yegesi yemvelo, isistimu yokugcina isiqandisi, uhlelo lokucindezelwa okujikelezayo kwesiqandisi, ukugcinwa kwe-LNG kanye neyunithi yokulayisha.

Igesi yemvelo engena esiteshini kuqala idlula kuyunithi yokulawula ukucindezela kanye nemitha, eqaphela ukulawulwa kwengcindezi kanye nemitha yegesi yemvelo engenayo; Igesi yemvelo ingena kuyunithi yokuhlanza igesi yemvelo, lapho igesi yemvelo ingaphansi kokususwa kwe-CO2, ukususwa kwe-H2S nokwelashwa kokuphelelwa amanzi emzimbeni. Inqubo ye-MDEA inconywa ukuchithwa kwe-carbonization kanye nokususwa kwe-H2S, inqubo ye-molecular sieve dehydration enemibhoshongo emithathu OR TEG inqubo yokukhipha amanzi emzimbeni inconywa ukuphelelwa amanzi emzimbeni; Futhi Kunconywa ukusebenzisa i-BOG ebuyiselwe futhi ecindezelwe yegesi yokuvuselela;

Igesi yemvelo ehlanjululwe engxenyeni yokuxutshwa kwegesi yemvelo, isiqandisi esixubene (inqubo ye-MRC yokukhipha uketshezi) iyanconywa ukuze kuxutshwe igesi yemvelo; I-LNG ene-liquefied igcinwa ethangini lokugcina, futhi inqubo yokugcina umkhathi neyezinga lokushisa eliphansi iyanconywa ukugcina i-LNG. Ithangi elilodwa lokugcina izinga lokushisa eliphansi lomkhathi lifakwe i-BG compressor, futhi i-BOG compressor isetshenziselwa ukucindezela i-BOG ngaphambi kokungena ku-molecular sieve dryer Regeneration, kuye ngepompo ye-cryogenic ukuze kuzuzwe ukufakwa.

Imingcele yezobuchwepheshe

1 Umthamo wokukhiqiza 90×104m3/d
2 Umthamo wethangi 10000m3