Umgangatho oPhezulu waseTshayina ababoneleli abakhulu be-LNG bokuLiquefaction - igesi yeNdalo yokuLiquefaction skid - Rongteng

Inkcazo

Ukunyibilika kwerhasi yendalo, kungekudala ebizwa ngokuba yi-LNG, ithoba irhasi yendalo ibe lulwelo ngokupholisa irhasi yendalo enoxinzelelo oluqhelekileyo ukuya – 162 ℃. I-liquefaction yegesi yendalo inokugcina kakhulu indawo yokugcina kunye neyokuthutha, kwaye ineenzuzo zexabiso elikhulu le-calorific, ukusebenza okuphezulu, ukulungelelaniswa kokulawulwa komthwalo wedolophu, ukulungelelanisa ukukhuselwa kwendalo, ukunciphisa ukungcoliseka kwedolophu kunye nokunye.

I-Liquefaction ngundoqo wemveliso ye-LNG. Okwangoku, iinkqubo zokunyibilikisa kwerhasi yendalo evuthiweyo ikakhulu zibandakanya inkqubo yokunyibilikisa kwe-cascade, inkqubo yokunyibilikisa exutyiweyo yefriji kunye nenkqubo yokunyibilikisa nge-expander.

Inkqubo ye-Cascade ye-liquefaction ye-gas yendalo isebenzisa iindawo zokubilisa ezahlukeneyo zefriji phantsi koxinzelelo oluqhelekileyo ukunciphisa ubushushu befriji yesinyathelo ngesinyathelo ukufezekisa injongo ye-liquefaction yegesi yendalo.

Umjikelo wefriji oxutyiweyo (MRC) yinkqubo apho ngaphezu kweentlobo ezintlanu zeefriji ezixubeneyo ezixubeneyo, ezifana neC1 ~ C5 Hydrocarbons kunye ne-N2, zisetyenziswa njengolwelo olusebenzayo ukujiya, ukuba ngumphunga kunye nokwandisa inyathelo ngenyathelo ukuze kufumaneke umthamo wefriji kumanqanaba obushushu ahlukeneyo, emva koko kuphole ngokuthe ngcembe kwaye kunyibilikise igesi yendalo. Inkqubo yokuxuba i-refrigerant liquefaction yohlulwe kwiindidi ezininzi zomjikelo wefriji.

Inkqubo yokunyibilikisa nge-expander ibhekisa kwinkqubo yokunyibilikisa kwerhasi yendalo ngokusebenzisa ireyinti yoxinzelelo oluphezulu ukuze iqonde umva umjikelo we-Claude wefriji kunye nokwandiswa kwe-adiabatic ye-turbo expander.

Inkqubo yenkqubo ikakhulu ibandakanya: igesi yegesi yokulawula uxinzelelo kunye neyunithi yokulinganisa, iyunithi yokucoca igesi yendalo kunye neyunithi yokunyibilikisa igesi yendalo, inkqubo yokugcinwa kwefriji, inkqubo yoxinzelelo olujikelezayo efrijini, ukugcinwa kwe-LNG kunye neyunithi yokulayisha.

Igesi yendalo engena kwisikhululo kuqala idlula kwiyunithi yokulawula uxinzelelo kunye nemitha, eqonda ukulawulwa koxinzelelo kunye nokulinganisa igesi yendalo engenayo; Igesi yendalo ingena kwiyunithi yokucoca igesi yendalo, apho igesi yendalo ixhomekeke ekususweni kwe-CO2, ukususwa kwe-H2S kunye nokunyangwa kwamanzi. Inkqubo ye-MDEA inconywa ukuba i-decarbonization kunye nokususwa kwe-H2S, inkqubo ye-molecular sieve dehydration kunye ne-tower ezintathu OKANYE inkqubo ye-TEG yokuchithwa kwamanzi iyanconywa ukuba ikhutshwe; Kwaye Kucetyiswa ukuba kusetyenziswe i-BOG efunyenweyo kwaye icinezelwe ukuvuselela igesi;

Irhasi yendalo esulungekileyo kwiyunithi yokunyibilikisa igesi yendalo, isikhenkcisi esixubeneyo (inkqubo yokunyibilikisa i-MRC) iyacetyiswa ukuba ixutywe nerhasi yendalo; I-LNG ene-liquefied igcinwe kwi-tank yokugcina, kwaye inkqubo yokugcinwa kwe-atmospheric kunye ne-low-temperature yokugcina inconywa kwi-LNG yokugcina. I-tank eyodwa yokugcina i-atmospheric low-temperature yokugcina ifakwe i-BG compressor, kunye ne-BOG compressor isetyenziselwa ukucinezela i-BOG ngaphambi kokungena kwi-molecular sieve dryer Regeneration, kuxhomekeke kwipompo ye-cryogenic ukufezekisa ukufakela.

Iiparamitha zobugcisa

1 Umthamo wemveliso 90 × 104m3 / d
2 Umthamo wetanki 10000m3