I-skid yesitshalo se-LNG efakwe kwi-TPD engu-13~67

Igesi yemvelo ewuketshezi, ebizwa ngokuthi i-LNG, ifaka igesi yemvelo ibe uketshezi ngokupholisa igesi yemvelo ewuketshezi ngaphansi kwengcindezi evamile ku--162 ℃. Uketshezi lwegesi yemvelo lungasindisa kakhulu indawo yokugcina kanye neyokuthutha, futhi lunezinzuzo zenani elikhulu lama-calorie, ukusebenza okuphezulu, okuhambisana nokulinganisela kokulawulwa kwemithwalo yasemadolobheni, okuhambisana nokuvikelwa kwemvelo, ukunciphisa ukungcola kwasemadolobheni nokunye.

Uhlelo lwenqubo luhlanganisa ikakhulukazi: ukulawulwa kwengcindezi yegesi yokudla kanye neyunithi yokulinganisa, iyunithi yokuhlanza igesi yemvelo kanye neyunithi yokuncibilikisa igesi yemvelo, uhlelo lokugcina izinto eziqandisiwe, uhlelo lokucindezela olujikelezayo lwesiqandisi, iyunithi yokugcina kanye nokulayisha i-LNG.

Igesi yemvelo engena esiteshini idlula kuqala kuyunithi yokulawula ingcindezi kanye neyokulinganisa, eqaphela ukulawulwa kwengcindezi kanye nokulinganisa kwegesi yemvelo engenayo; Igesi yemvelo ingena kuyunithi yokuhlanza igesi yemvelo, lapho igesi yemvelo isuswa khona i-CO2, isuswe i-H2S kanye nokwelashwa kokuphelelwa amanzi emzimbeni. Inqubo ye-MDEA inconywa ukuze kususwe i-carbonization kanye nokususwa kwe-H2S, inqubo yokuphelelwa amanzi emzimbeni ngesihlungo sama-molecular enemibhoshongo emithathu NOMA inqubo yokuphelelwa amanzi emzimbeni ye-TEG inconywa ukuze kusetshenziswe ukuphelelwa amanzi emzimbeni; Futhi Kunconywa ukuthi kusetshenziswe i-BOG etholakele futhi ecindezelwe ukuze kutholakale igesi yokuvuselela;

Igesi yemvelo ehlanziwe ibe yiyunithi yokuncibilikisa igesi yemvelo, i-mixed refrigerant (inqubo yokuncibilikisa i-MRC) inconywa ekuncibilikiseni igesi yemvelo; i-LNG encibilikisiwe igcinwa ethangini lokugcina, kanti inqubo yokugcina yomoya kanye neyokushisa okuphansi inconywa ekugcineni i-LNG. Ithangi elilodwa lokugcina lomoya elinezinga lokushisa eliphansi lifakwe i-BG compressor, kanti i-BOG compressor isetshenziselwa ukucindezela i-BOG ngaphambi kokungena ku-molecular sieve dryer Regeneration, kuye ngephampu ye-cryogenic ukuze kufezwe ukufakwa.

Igesi yemvelo encibilikisiwe (i-LNG) yigesi yemvelo, ikakhulukazi i-methane, epholile yaba uketshezi ukuze kube lula futhi kuphephe ukugcinwa nokuthuthwa. Ithatha cishe u-1/600th wevolumu yegesi yemvelo esimweni segesi.

Sihlinzeka ngezitshalo zokukhiqiza igesi yemvelo ngezinga elincane nelincane. Amandla ezitshalo ahlanganisa kusukela ku-13 kuya ku-200 Tons ngosuku lokukhiqizwa kwe-LNG (18,000 kuya ku-300,000 Nm).³/d).

Isitshalo esiphelele sokukhipha uketshezi lwe-LNG sihlanganisa izinhlelo ezintathu: uhlelo lwenqubo, uhlelo lokulawula amathuluzi kanye nohlelo lokusetshenziswa. Ngokusho kwemithombo yomoya ehlukene, singashintshwa.

Ngokwesimo sangempela somthombo wegesi, samukela inqubo engcono kakhulu kanye nohlelo olungabizi kakhulu ukuhlangabezana nezidingo ezahlukene zamakhasimende. Imishini efakwe kuma-skid yenza ukuthuthwa nokufakwa kube lula kakhulu.

1. Uhlelo lwenqubo

Igesi yemvelo ephakelwayo icindezelwa ngemva kokuhlunga, ukuhlukaniswa, ukulawulwa kwengcindezi kanye nokulinganisa, bese ingena ohlelweni lokwelapha igesi yemvelo. Ngemva kokususa i-CO2₂, H₂S ,Hg, H₂I-O kanye nama-hydrocarbon asindayo, ingena ebhokisini elibandayo le-liquefaction. Bese ipholiswa ku-plate fin heat exchanger, i-denitized ngemva kwe-liquefaction, bese ipholiswa ngaphansi, i-throttle bese ikhanya ethangini le-flash, bese kuthi ekugcineni, isigaba soketshezi esihlukanisiwe singene ethangini lokugcina i-LNG njengemikhiqizo ye-LNG.

Ishadi lokugeleza kwesitshalo se-LNG esifakwe kuma-skid lilandelayo:

Uhlelo lwenqubo yesitshalo se-cryogenic LNG luhlanganisa:

• ● Ukuhlunga igesi yokudla, ukuhlukaniswa, ukulawulwa kwengcindezi kanye neyunithi yokulinganisa;

• ● Iyunithi yokucindezela igesi yokuphakelayo

• ● Iyunithi yokwelapha ngaphambi kwesikhathi (kufaka phakathiukuqeda i-asidi,ukuphelelwa amanzi emzimbenikanye nokususwa kwe-hydrocarbon esindayo, ukususwa kwe-mercury kanye nothuli);

• ● Iyunithi yokulinganisa i-MR kanye neyunithi yomjikelezo wokucindezela i-MR;

• ● Iyunithi yokuncibilikisa i-LNG (kufaka phakathi iyunithi yokususa i-nitrification);

1.1 Izici zesistimu yenqubo

1.1.1 Iyunithi yokwelapha igesi yokuphakelayo

Indlela yenqubo yeyunithi yokwelapha igesi yokuphakelayo inezici ezilandelayo:

• ●Ukuqeda i-acid ngesisombululo se-MDEAinezinzuzo zokukhipha amagwebu amancane, ukubola okuncane kanye nokulahlekelwa ama-amine amancane.

• ●Ukumuncwa kwesihlungo sama-molecularisetshenziselwa ukuphelelwa amanzi emzimbeni okujulile, futhi isenenzuzo enkulu yokumuncwa ngisho nangaphansi kwengcindezi encane yomhwamuko wamanzi.

• ● Ukusebenzisa ikhabhoni evuselelwe efakwe isibabule ukususa i-mercury kushibhile ngentengo. I-Mercury isabela ne-sulfur kukhabhoni evuselelwe efakwe isibabule ukuze ikhiqize i-mercury sulfide, emuncwa kukhabhoni evuselelwe ukuze kufezwe injongo yokususwa kwe-mercury.

• ● Izinto zokuhlunga ezinembile zingahlunga isihlungi sama-molecule kanye nothuli lwe-carbon olusebenzayo olungaphansi kwama-5μm.

1.1.2 Iyunithi yokukhiqiza uketshezi kanye nefriji

Indlela yenqubo ekhethiwe yeyunithi yokuncibilikisa uketshezi kanye nefriji yi-MRC (mixed refrigerant) cycle friji, okuwukusetshenziswa kwamandla okuphansi. Le ndlela inokusetshenziswa kwamandla okuphansi kakhulu phakathi kwezindlela ezivame ukusetshenziswa zokufriji, okwenza intengo yomkhiqizo incintisane emakethe. Iyunithi yokulinganisa ifriji ayizimele kakhulu kuyunithi yokucindezela ejikelezayo. Ngesikhathi sokusebenza, iyunithi yokulinganisa igcwalisa kabusha i-refrigerant kuyunithi yokucindezela ejikelezayo, igcina isimo sokusebenza esizinzile seyunithi yokucindezela ejikelezayo; Ngemva kokuba iyunithi ivaliwe, iyunithi yokulinganisa ingagcina i-refrigerant engxenyeni yokucindezela okuphezulu kweyunithi yokucindezela ngaphandle kokukhipha i-refrigerant. Lokhu ngeke nje konge i-refrigerant, kodwa futhi kufinyeze isikhathi sokuqala esilandelayo.

Wonke ama-valve ebhokisini elibandayo ashiselwe, futhi akukho ukuxhumana kwe-flange ebhokisini elibandayo ukuze kuncishiswe amaphuzu okuvuza okungenzeka ebhokisini elibandayo.

1.2 Imishini eyinhloko yeyunithi ngayinye

2. Uhlelo lokulawula izinsimbi

Ukuze kuqashwe ngempumelelo inqubo yokukhiqiza yesethi ephelele yemishini, futhi kuqinisekiswe ukusebenza okuthembekile kanye nokusebenza okulula nokugcinwa kwayo, uhlelo lokulawula izinsimbi luhlanganisa ikakhulukazi:

Uhlelo lokulawula olusatshalaliswayo (i-DCS)

Uhlelo Lwezinsimbi Zokuphepha (i-SIS)

Uhlelo Lokuthola I-Alarm Yomlilo kanye Negesi (FGS)

Ithelevishini yesekethe evaliwe (i-CCTV)

Uhlelo lokuhlaziya

Nezinsimbi ezinembile kakhulu (i-flowmeter, i-analyzer, i-thermometer, i-pressure gage) ezihlangabezana nezidingo zenqubo. Lolu hlelo luhlinzeka ngemisebenzi ephelele yokucushwa, ukuqalisa kanye nokuqapha, okuhlanganisa ukutholwa kwedatha yenqubo, ukulawulwa kwe-closed-loop, isimo sokuqapha ukusebenza kwemishini, ukuxhumanisa i-alamu kanye nesevisi, ukucubungula kanye nokubonisa idatha ngesikhathi sangempela, isevisi yethrendi, ukubonisa ihluzo, isevisi yokubika amarekhodi okusebenza kanye neminye imisebenzi. Uma kukhona isimo esiphuthumayo eyunithi yokukhiqiza noma uhlelo lwe-FGS luthumela isignali ye-alamu, i-SIS ithumela isignali yokuvikela ukuvikela imishini esendaweni, kanti uhlelo lwe-FGS lwazisa umnyango wabacimi bomlilo bendawo ngesikhathi esifanayo.

3. Uhlelo lwezinsiza

Lolu hlelo luhlanganisa ikakhulukazi: iyunithi yomoya wezinsimbi, iyunithi ye-nitrogen, iyunithi kawoyela wokudlulisa ukushisa, iyunithi yamanzi akhishwe usawoti kanye neyunithi yamanzi ajikelezayo okupholisa.