Inkqubo yokuvelisa i-LNG efakwe kwi-Mmscfd yesityalo se-LNG

Igesi yendalo enyibilikisiweyo (LNG) yigesi yendalo, ikakhulu i-methane, epholileyo yaba lulwelo ukuze kube lula ukugcina nokuthutha. Ithatha malunga ne-1/600th yomthamo wegesi yendalo kwimeko yegesi.

Sinikezela ngeZityalo zokuNciphisa iGesi yendalo kwizinga elincinci nelincinci. Umthamo wezityalo ugubungela ukusuka kwi-13 ukuya ngaphezulu kweetoni ezingama-200 ngosuku zemveliso ye-LNG (18,000 ukuya kwi-300,000 Nm).³/d).

Igesi yokutya:

• ● Iindawo zegesi ezixineneyo
• ● Igesi edibeneyo / evuthayo
• ● I-Biogas
• ● Igesi yombhobho

Isityalo esipheleleyo sokunyibilikisa ulwelo se-LNG siquka iinkqubo ezintathu: inkqubo yenkqubo, inkqubo yokulawula izixhobo kunye nenkqubo yokusetyenziswa. Ngokwemithombo yomoya eyahlukeneyo, ingatshintshwa.

Ngokwemeko yokwenyani yomthombo wegesi, thinayamkela inkqubo engcono kakhulu kunye neyona nkqubo ingabizi kakhulu ukuhlangabezana neemfuno ezahlukeneyo zabathengi.Izixhobo ezifakelwe kwi-skid zenza ukuthuthwa nokufakwa kube lula ngakumbi.

1. Inkqubo yenkqubo kunye nenkqubo yokuvelisa i-LNG

Igesi yendalo eyondlayo ixinzelelwa emva kokuhluzwa, ukwahlulahlulwa, ulawulo loxinzelelo kunye nokulinganisa, ize ingene kwinkqubo yonyango lwangaphambi kwegesi yendalo. Emva kokususa i-CO2₂, H₂S ,Hg, H₂I-O2 kunye neehydrocarbons ezinzima, ingena kwibhokisi ebandayo yolwelo. Emva koko ipholiswa kwi-plate fin heat exchanger, i-denitized emva kolwelo, ize ipholiswe kancinci, ithontsizwe kwaye ikhanye kwi-flash tank, kwaye okokugqibela, isigaba solwelo esahlulweyo singena kwi-LNG storage tank njengeemveliso ze-LNG.

Itshathi yokuhamba kwesityalo se-LNG esifakwe kwi-skid yile ilandelayo:

Inkqubo yesityalo se-cryogenic LNG ibandakanya:

• ● Ukucoca igesi yokutya, ukwahlulahlula, ulawulo loxinzelelo kunye neyunithi yokulinganisa;
• ● Iyunithi yoxinzelelo lwegesi yokutya
• ● Iyunithi yonyango lwangaphambi konyango (kubandakanya ukucima i-asidi, ukuphelelwa ngamanzi emzimbeni kunye nokususwa kwe-hydrocarbon enzima, ukususwa kwe-mercury kunye nothuli);
• ● Iyunithi yokulinganisa i-MR kunye neyunithi yomjikelo woxinzelelo lwe-MR;
• ● Iyunithi yokunyibilikisa i-LNG (kubandakanya iyunithi yokususa i-nitrification);

1.1 Iimpawu zenkqubo yokwenziwa kwe-LNG

1.1.1 Iyunithi yonyango lwangaphambi kokusetyenziswa kwegesi yokuphakelwa

Indlela yenkqubo yeyunithi yonyango lwegesi yokuphakelwa ineempawu ezilandelayo:

• ● Ukususa i-asidi ngesisombululo se-MDEA kuneengenelo zokukhupha igwebu elincinci, ukubola okuncinci kunye nokulahleka okuncinci kwe-amine.
• ● Ukufunxwa kwesihluzo seemolekyuli kusetyenziselwa ukukhupha amanzi emzimbeni ngokunzulu, kwaye kusenenzuzo enkulu yokufunxwa kwamanzi nokuba kuphantsi koxinzelelo oluncinci lomphunga wamanzi.
• ● Ukusebenzisa ikhabhoni evuselelweyo enesalfure ukususa imercury kubiza kancinci. Imercury isabela nesalfure kwikhabhoni evuselelweyo enesalfure ukuvelisa imercury sulfide, efunxwa kwikhabhoni evuselelweyo ukufezekisa injongo yokususa imercury.
• ● Izinto zokucoca ezichanekileyo zinokuhluza isihluzo semolekyuli kunye nothuli lwekhabhoni olusebenzayo ngaphantsi kwe-5μm.

1.1.2 Iyunithi yokwenza ulwelo kunye nefriji

Indlela ekhethiweyo yenkqubo yokwenza ulwelo kunye neyunithi yokukhenkceza yi-MRC (mixed refrigerant) cycle refrigerant, esetyenziswa kancinci. Le ndlela inokusetyenziswa kancinci kwamandla phakathi kweendlela ezisetyenziswa kakhulu zokukhenkceza, nto leyo eyenza ixabiso lemveliso likhuphisane kwimarike. Iyunithi yokulinganisa i-refrigerant ayixhomekekanga kwiyunithi yoxinzelelo olujikelezayo. Ngexesha lokusebenza, iyunithi yokulinganisa iphinda izalise i-refrigerant kwiyunithi yoxinzelelo olujikelezayo, igcina imeko yokusebenza ezinzileyo yeyunithi yoxinzelelo olujikelezayo; Emva kokuba iyunithi ivaliwe, iyunithi yokulinganisa inokugcina i-refrigerant kwindawo enoxinzelelo oluphezulu lweyunithi yoxinzelelo ngaphandle kokukhupha i-refrigerant. Oku akunakugcina i-refrigerant kuphela, kodwa kunciphise nexesha elilandelayo lokuqalisa.

Zonke iivalvu ezikwibhokisi ebandayo zitshixiwe, kwaye akukho qhagamshelo lweflange kwibhokisi ebandayo ukunciphisa iindawo ezinokwenzeka zokuvuza kwibhokisi ebandayo.

1.2 Izixhobo eziphambili zeYunithi nganye

2. Inkqubo yokulawula izixhobo

Ukuze kujongwe ngempumelelo inkqubo yokuvelisa iseti epheleleyo yezixhobo, kwaye kuqinisekiswe ukusebenza okuthembekileyo kunye nokusebenza okulula kunye nokugcinwa, inkqubo yolawulo lwezixhobo ibandakanya ikakhulu:

Inkqubo yolawulo olusasazwayo (i-DCS)

Inkqubo yeZixhobo zoKhuseleko (SIS)

Inkqubo yeAlarm yoMlilo kunye neGesi (FGS)

Umabonakude ojikelezayo (i-CCTV)

Inkqubo yohlalutyo

Nezixhobo ezichanekileyo kakhulu (i-flowmeter, i-analyzer, i-thermometer, i-pressure gage) ezihlangabezana neemfuno zenkqubo. Le nkqubo ibonelela ngemisebenzi yoqwalaselo egqibeleleyo, ukuqalisa kunye nokubeka iliso, kubandakanya ukufunyanwa kwedatha yenkqubo, ulawulo oluvaliweyo, imeko yokujonga ukusebenza kwezixhobo, ukunxibelelana kwe-alamu kunye nenkonzo, ukucubungula idatha kunye nokubonisa ngexesha langempela, inkonzo yefashoni, ukuboniswa kwemizobo, inkonzo yengxelo yerekhodi yokusebenza kunye neminye imisebenzi. Xa kukho imeko engxamisekileyo kwicandelo lemveliso okanye inkqubo ye-FGS ithumela isignali ye-alamu, i-SIS ithumela isignali yokukhusela ukuthintela izixhobo ezikwindawo, kwaye inkqubo ye-FGS yazisa isebe labacimi-mlilo basekuhlaleni ngaxeshanye.

3. Inkqubo yokusetyenziswa kwezixhobo

Le nkqubo ibandakanya ikakhulu: iyunithi yomoya wesixhobo, iyunithi yenitrogen, iyunithi yeoyile yokudlulisa ubushushu, iyunithi yamanzi angenatyuwa kunye neyunithi yamanzi ajikelezayo okupholisa.