I-13~67 TPD Skid inyuselwe isityalo se-LNG skid

Ukunyibilika kwerhasi yendalo, ekwabizwa ngokuba yi-LNG, kuthoba irhasi yendalo ibe lulwelo ngokupholisa irhasi yendalo enoxinzelelo oluqhelekileyo ukuya ku-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.

Inkqubo yenkqubo ikakhulu ibandakanya: igesi yokutya yokulawula uxinzelelo kunye neyunithi yokulinganisa,iyunithi yokucoca igesi yendalokunye neyunithi ye-liquefaction yegesi yendalo, inkqubo yokugcinwa kwefriji, inkqubo yokunyanzeliswa kwe-refrigerant circulating, i-LNG yokugcina 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.

Irhasi eyiLiquefied natural gas (LNG) yirhasi yendalo, ubukhulu becala iyimethane, ethe yapholiswa yaya kutsho kulwelo ukuze kube lula kunye nokhuseleko lokugcinwa nokuthutha. Kuthatha malunga ne-1/600 umthamo wegesi yendalo kwimeko yegesi.

Sibonelela ngeZityalo zokuNyilwa kweGesi yeNdalo kwi-micro (mini) nakwizinga elincinci. Umthamo wezityalo ugubungela ukusuka kwi-13 ukuya ngaphezulu kwe-200 yeeToni / ngosuku lwemveliso ye-LNG (18,000 ukuya kwi-300,000 Nm³/d).

Isityalo esipheleleyo sokunyibilikisa i-LNG sibandakanya iinkqubo ezintathu: inkqubo yenkqubo, inkqubo yokulawula izixhobo kunye nenkqubo yokusetyenziswa. Ngokwemithombo yomoya eyahlukeneyo, inokutshintshwa.

Ngokwemeko yokwenene yomthombo wegesi, samkela eyona nkqubo ilungileyo kunye neskimu esinoqoqosho kakhulu ukuhlangabezana neemfuno ezahlukeneyo zabathengi. Izixhobo ezifakwe kwi-Skid zenza ukuba uthutho kunye nofakelo lube lula ngakumbi.

1. Inkqubo yenkqubo

Irhasi yendalo yokutya icinezelwa emva kokuhluzwa, ukwahlukana, ukulawulwa koxinzelelo kunye nemitha, kwaye emva koko ingene kwinkqubo yonyango yegesi yendalo. Emva kokususa i-CO₂, H₂S, Hg, H₂ O kunye neehydrocarbons ezinzima, ingena kwibhokisi ebandayo ye-liquefaction. Emva koko Ipholile kwi-plate fin heat exchanger, i-denitrified emva kokutshitshiswa, kunye ne-subcooled elandelayo, i-throttled kunye ne-flash tank, kwaye ekugqibeleni, isigaba solwelo esahlukileyo singena kwi-tank yokugcina ye-LNG njengemveliso ye-LNG.

I-flowchart ye-skid efakwe kwi-LNG Plant ilandelayo:

Inkqubo yenkqubo yeCryogenic LNG Plant ibandakanya:

• ● Ukuhluzwa kwerhasi yokutya, ukwahlula, ukulawulwa koxinzelelo kunye neyunithi yokulinganisa;

• ● Iyunithi yoxinzelelo lwegesi yokutya

• ● Iyunithi yonyango (kubandakanywaukuncipha kweacid,ukuphelelwa ngamanzi emzimbenikunye nokususwa kwe-hydrocarbon enzima, i-mercury kunye nokususwa kothuli);

• ● Iyunithi yokulinganisa i-MR kunye neyunithi yomjikelo woxinzelelo lwe-MR;

• ● Iyunithi yokunyibilikisa kwe-LNG (kubandakanywa neyunithi yokukhutshwa kwe-denitrification);

1.1 Iimpawu zenkqubo yenkqubo

1.1.1 Iyunithi yegesi yokutya kwangaphambili

Indlela yenkqubo yeyunithi yokucocwa kwerhasi yokutya inezi mpawu zilandelayo:

• ●I-Deacidification kunye nesisombululo se-MDEAinogwebu oluncinci, ukubola okuphantsi kunye nelahleko encinci ye-amine.

• ●I-molecular sieve adsorptionisetyenziselwa ukuphelelwa ngamanzi emzimbeni, kwaye isenayo iadsorption ephezulu naphantsi komphunga ophantsi woxinzelelo oluyinxenye.

• ● Ukusebenzisa ikhabhoni efakwe isulfure efakwe kwi-activated ukususa imekyuri kunexabiso eliphantsi. I-Mercury iphendula kunye nesalfure kwisulfure efakwe kwikhabhoni esebenzayo ukuvelisa imekyuri sulfide, ebhengezwa kwikhabhoni esebenzayo ukufezekisa injongo yokususa imekyuri.

• ● Izinto zokucoca ezichanekileyo zinokuhluza i-molecular sieve kunye nothuli lwekhabhoni olusebenzayo ngaphantsi kwe-5μm.

1.1.2 Iyunithi yokunyibilikisa kunye nefriji

Indlela ekhethiweyo yenkqubo yokucima kunye neyunithi yefriji yi-MRC (i-mixed refrigerant) i-refrigeration cycle cycle, ukusetyenziswa kwamandla aphantsi. Le ndlela ineyona ndlela iphantsi yokusetyenziswa kwamandla phakathi kweendlela ezisetyenziswa ngokuqhelekileyo zefriji, okwenza ixabiso lemveliso likhuphisane kwiimarike. Iyunithi yokulinganisa i-refrigerant izimele ngokulinganayo kwiyunithi yoxinzelelo olujikelezayo. Ngethuba lokusebenza, iyunithi yokulinganisa iphinda izalise ifriji kwiyunithi yokunyanzeliswa okujikelezayo, igcine imeko ezinzileyo yokusebenza kweyunithi yokunyanzeliswa okujikelezayo; Emva kokuba iyunithi ivaliwe, iyunithi yokulinganisa inokugcina ifriji ukusuka kwindawo ephezulu yoxinzelelo lweyunithi yoxinzelelo ngaphandle kokukhupha ifriji. Oku akunako ukugcina kuphela ifriji, kodwa kwakhona kunciphise ixesha lokuqalisa elilandelayo.

Zonke iivalve ezikwibhokisi ebandayo zidityanisiwe, kwaye akukho ludibaniso lweflange kwibhokisi ebandayo ukunciphisa iindawo ezivuzayo ezinokubakho kwibhokisi ebandayo.

1.2 Izixhobo eziphambili zeYunithi nganye

2. Inkqubo yokulawula izixhobo

Ukwenzela ukubeka iliso ngempumelelo inkqubo yokuvelisa iseti epheleleyo yezixhobo, kunye nokuqinisekisa ukusebenza okuthembekileyo kunye nokusebenza kakuhle kunye nokugcinwa, inkqubo yokulawula isixhobo ikakhulu ibandakanya:

Inkqubo yolawulo olusasazwayo (DCS)

Inkqubo yesixhobo soKhuseleko (SIS)

I-Alam yoMlilo kunye neNkqubo yeGesi yokubona (FGS)

Umabonakude ovaliweyo (CCTV)

Inkqubo yohlalutyo

Kwaye izixhobo ezichanekileyo eziphezulu (i-flowmeter, i-analyzer, i-thermometer, i-gage yoxinzelelo) ehlangabezana neemfuno zenkqubo. Le nkqubo ibonelela ngoqwalaselo olugqibeleleyo, ugunyaziso kunye nemisebenzi yokubeka iliso, kubandakanywa ukufunyanwa kwedatha yenkqubo, ulawulo oluvaliweyo, imeko yokubeka iliso kwezixhobo zokusebenza, ukuvalelwa kwe-alarm kunye nenkonzo, ukusetyenzwa kwedatha yexesha langempela kunye nokuboniswa, inkonzo yentsingiselo, umboniso wegraphic, inkonzo yengxelo yokusebenza kunye eminye imisebenzi. Xa kukho imeko engxamisekileyo kwiyunithi yokuvelisa okanye inkqubo ye-FGS ithumela isignali ye-alamu, i-SIS ithumela isignali ye-interlock yokukhusela ukukhusela izixhobo ezikwi-site, kwaye inkqubo ye-FGS ikwazisa isebe lomlilo wendawo ngexesha elifanayo.

3. Inkqubo eluncedo

Le nkqubo ibandakanya ikakhulu: iyunithi yomoya wesixhobo, iyunithi yenitrogen, iyunithi ye-oyile yokuhambisa ubushushu, iyunithi yamanzi anetyuwa kunye nokupholisa iyunithi yamanzi ajikelezayo.