Ukukhethwa kwenkqubo yokunyibilikisa igesi yendalo kwisityalo se-LNG
Okwangoku, kukho iinkqubo ezintathu eziphambili zokunyibilikisa ulwelo oluvuthiweyo kwicandelo lokunyibilikisa ulwelo lwegesi yendalo: inkqubo yomjikelo wokufrijisa we-cascade, inkqubo yomjikelo wokufrijisa oxutyiweyo kunye nenkqubo yomjikelo wokufrijisa we-expander.
A) Inkqubo yomjikelo wokukhenkceza weCascade
Umjikelo wokuphola we-cascade ngumjikelo wokuphola onezigaba ezintathu kunye neefriji ezifana ne-propane (okanye i-propylene), i-ethane (okanye i-ethylene), i-methane (okanye i-nitrogen) (amaqondo obushushu aphumayo yi-100 °F, - 121 °F, - 256 °F, ngokulandelanayo). Ukuphola kwesigaba kwenza igesi yendalo ikwazi ukutshintshiselana ngobushushu neefriji ezifanayo kwiindidi ezahlukeneyo zobushushu, ngaloo ndlela iphola kwaye inyibilikise.
B) Inkqubo yomjikelo wokukhenkceza oxutyiweyo
I umjikelo wokufrijisa oxutyiweyo yinkqubo esebenzisa umxube we-N 2 kunye no-C 1 ukuya ku-C 5 iihydrocarbons njengefriji ejikelezayo.
C) Inkqubo yokwandisa umjikelo wokukhenkceza
Umjikelo wokuphola we-expander ubhekisa kwi-Crowder cycle friji apho i-refrigerant enoxinzelelo oluphezulu ikhula ngokukhawuleza nge-turbo expander ukuze kufezekiswe ulwelo lwegesi yendalo. Ngelixa igesi isanda kwaye iphola kwi-expander, inokukhupha umsebenzi, onokusetyenziselwa ukuqhuba i-compressor kwinkqubo.
Ngokweefriji ezahlukeneyo, umjikelo wokuphola we-expander unokwahlulwahlulwa ube: umjikelo wokuphola we-nitrogen expander, umjikelo wokuphola we-nitrogen-methane expander, umjikelo wokuphola we-natural gas expansion.
D) Uthelekiso lwetekhnoloji noqoqosho lweenkqubo ezintathu
Ukusetyenziswa kwamandla komjikelo wokuqandisa we-cascade kumiselwe njengo-1, uthelekiso lwemijikelo eyahlukeneyo yokuqandisa ludweliswe kwiTheyibhile 5.1-2, kwaye iimpawu zemijikelo eyahlukeneyo yokuqandisa zithelekiswa kwiTheyibhile 5.1-3.
Itheyibhile 5.1-2 Uthelekiso Lokusebenza Kakuhle Kwemijikelo Eyahlukeneyo Yokukhenkceza
| Inkqubo yokukhenkcisa | Ukusetyenziswa kwamandla okuthelekisayo kunye nokuphola kweCascade |
| umjikelo wokukhenkceza we-cascade | 1.00 |
| umjikelo wokufrijisa oxutyiweyo | 1.15 |
| R22 Ukupholisa kwangaphambili N 2 -CH 4 Ukwandiswa koMjikelo wokuFriji | 1.35 |
Itheyibhile 5.1-3 Uthelekiso lweempawu ezahlukeneyo zomjikelo wokukhenkceza
| isalathisi | ukupholisa i-cascade | ifriji exutyiweyo | Ukwandisa ifriji |
| ukusebenza kakuhle | phezulu | embindini | Iphantsi |
| Ubunzima | phezulu | embindini | embindini |
| Izixhobo eziphambili zokuhambisa | Iicompressor ezi-3 | Isiguquli esi-1 | isikhonkwane + isandisi |
| uhlobo lwesitshintshi sobushushu | iphiko lepleyiti | Isiphelo sepleyiti okanye ityhubhu yamanxeba | iphiko lepleyiti |
| indawo yokutshintshiselana nobushushu | nkulu | nkulu | Encinci |
| ukuziqhelanisa | phezulu | embindini | embindini |
| umthombo wefriji | Kufuneka iifriji ezi-3 | Kufuneka iifriji ezi-3 ukuya kwezi-6, kwaye ifriji ingakhutshwa ngqo kwigesi ye-Feed | Kufuneka ifriji enye kuphela: iNitrogen, enokukhutshwa emoyeni |
| tyala imali | phezulu | embindini | Iphezulu ngokuphakathi |
Ngokujonga izinto ezinje ngotyalo-mali, ukusetyenziswa kwamandla kunye nokusebenza kunye nokugcinwa, inkqubo yokunyibilikisa ulwelo kwesi sixhobo isebenzisa inkqubo yokufrijisa exutyiweyo.
I-Rongteng igxile kunyango lwemithombo yamanzi endle, ukucocwa kwegesi yendalo, ukubuyiswa kwe-LPG, izityalo ze-LNG kunye nendalo iseti yejenereyitha yegesi.
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