3.5~7 isitshalo se-MMSCD LNG kanye Nesisetshenziswa Se-Skid Mounted LNG

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 yokucwiliswa kwe-liquefaction 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.

I-Mixed refrigerant cycle (MRC) iyinqubo lapho izinhlobo ezingaphezu kwezinhlanu zeziqandisi ezixubene izingxenye eziningi, njenge-C1 ~ C5 Hydrocarbons kanye ne-N2, zisetshenziswa njengoketshezi olusebenzayo ukufingqa, ukuhwamuka nokwandisa isinyathelo ngesinyathelo ukuze kutholwe umthamo wesiqandisi amazinga 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