Ukutholwa kwegesi ye-BOG
I-BOG yesitshalo se-LNG empeleni ivela kugesi ophakelayo. Ukuphuma komoya kwe-BOG okubangelwa ukuphathwa kabi kuwukulahlekelwa ngqo komnikazi futhi kuzoholela ezinkingeni zokuvikelwa kwemvelo.
Ngokuvamile, ukubuyiswa kwe-BOG kuzosetshenziswa ngokuphelele ekufakweni kwegesi kaphethiloli, ukuze i-BOG ikwazi ukuphinda isetshenziswe.
I-BOG yesitshalo se-LNG ivela kakhulu ebhokisini elibandayo elinoketshezi, ithangi lokugcina i-LNG kanye nomthwalo we-LNG.
Ukubuyiselwa kwe-BOG ebhokisini elibandayo
Ukugeleza kwe-BOG kwebhokisi elibandayo kuncike ekushiseni kwe-LNG ephuma ebhokisini elibandayo, okuqukethwe kwe-nitrogen ku-LNG kanye nomfutho we-flash. Ukuze kulawulwe ukugeleza kwe-BOG ebhokisini elibandayo, izinga lokushisa le-LNG ephuma ebhokisini elibandayo kufanele lizinze ku- – 163 ℃ ekwakhiweni nasekusebenzeni; Ngemva kokuba okuqukethwe kwe-nitrogen kugesi yokuphakelayo kuphakeme kunenani elithile, kuzolungiswa umbhoshongo wokuhlanza. I-BOG ekhanyiswe ku-LNG separator ibuyela ku-liquefaction heat exchanger futhi ingena ohlelweni lwegesi kaphethiloli ngemva kokubuyisa amandla okupholisa.
Ukutholwa kwethangi lokugcina i-LNG
Ukugeleza kwe-BOG kwethangi lokugcina i-LNG kuncike ekushiseni kwe-LNG, okuqukethwe yi-nitrogen ku-LNG kanye nomfutho wethangi lokugcina. Ithangi lokugcina i-BOG lokushisa eliphansi liphinde lifudunyezwe yi-bog heater, licindezelwe yi-BOG compressor bese libuyiselwa.
Ukubuyiselwa kwe-LNG yokulayisha i-bog
I-BOG ekulayishweni nayo inokushisa okuphansi. Ngemva kokuvuselelwa yi-heater ye-BOG, icindezelwa yi-compressor ye-BOG bese ibuyiselwa emuva.
Ukugeleza kwebhokisi elibandayo le-BOG kanye nethangi lokugcina izinto kuzinzile, kuyilapho ukugeleza kwe-BOG ekulayisheni kushintsha kakhulu ngomthamo wokulayisha, ngakho-ke uhlelo lwe-BOG compressor ludinga ukukwazi ukuphendula kulokhu kuguquguquka okukhulu ngesikhathi. Sisebenzisa ukulawulwa kokungenisa umoya kwe-compressor (ukulawulwa kwe-slide valve yomshini wesikulufu noma ukulawulwa kwe-air intake valve yomshini ophindiselayo). Lapho ukulawulwa kokungenisa umoya kufinyelela esiphezulu, sisebenzisa i-return valve ukusiza ukulawulwa, ukuze i-BOG pressurization ikwazi ukuzivumelanisa ngokugcwele noshintsho lokugeleza okukhulu futhi ifinyelele ekubuyiselweni okuphelele kwe-BOG.
Ukuvuza kwebhokisi elibandayo
Uma ibhokisi elibandayo lesitshalo se-LNG lisebenza ekushiseni okuphansi okungaba ngu-163 ℃, i-heat exchanger, i-valve kanye nepayipi laso kudingeka kuzwe umthelela wokucindezeleka kokushisa ngesikhathi sokuqalisa, ukusebenza okuvamile kanye nokuvala, okungaholela ekuvuzeni kwegesi evuthayo ohlelweni ngenxa yezizathu zokuklama noma zokukhiqiza, okuholela ezingozini zokusha noma zokuqhuma. Sithathe izinyathelo eziningi zokuqeda izinkinga ezinjalo:
Umklamo webhokisi elibandayo uhlanganisa ukuhlaziywa kokucindezeleka kwepayipi ukulawula ukucindezeleka kwepayipi ngaphakathi kwebanga elivunyelwe kusukela emthonjeni.
Akukho ukuxhumana kwe-flange phakathi kwamapayipi nezitsha ebhokisini elibandayo, futhi konke kuxhunywe nge-welded.
Wonke amavalvu abekwe ngaphandle kwebhokisi elibandayo, okungagcini nje ngokuqeda iphuzu lokuvuza, kodwa futhi okusiza ekunakekelweni kwamavalvu.
Ibhokisi elibandayo lifakwe i-probe yegesi evuthayo kanye ne-probe yokushisa ukuqapha ukugcwala kwegesi kanye nokushisa ebhokisini elibandayo ngesikhathi sangempela.
Yenza ukutholwa kokuvuza kwe-helium mass spectrometry njengoba kudingeka.
Isikhathi sokuthunyelwe: Mashi-18-2022