Ukufunyanwa kwegesi ye-BOG
I-BOG yesityalo se-LNG ivela kwigesi yokutya. Ukuphuma komoya kwe-BOG okubangelwa kukuphathwa kakubi kukulahlekelwa ngqo ngumnini kwaye kuya kukhokelela kwiingxaki zokhuseleko lokusingqongileyo.
Ngokubanzi, ukubuyiswa kwe-BOG kuya kusetyenziswa ngokupheleleyo ekufakeni igesi yepetroli, ukuze i-BOG ikwazi ukuphinda isetyenziswe.
I-BOG yesityalo se-LNG ikakhulu ivela kwibhokisi ebandayo enyibilikisiweyo, itanki yokugcina i-LNG kunye nomthwalo we-LNG.
Ukubuyiselwa kwe-BOG yebhokisi ebandayo
Ukuhamba kwe-BOG kwibhokisi ebandayo kuxhomekeke kubushushu be-LNG ephuma kwibhokisi ebandayo, umxholo we-nitrogen kwi-LNG kunye noxinzelelo lwe-flash. Ukuze kulawulwe ukuhamba kwe-BOG kwibhokisi ebandayo, ubushushu be-LNG ephuma kwibhokisi ebandayo kufuneka buzinze kwi- – 163 ℃ kuyilo kunye nokusebenza; Emva kokuba umxholo we-nitrogen kwigesi yokutya uphezulu kunexabiso elithile, kuya kulungiswa inqaba ye-denitrification. I-BOG ekhanyayo kwi-LNG separator ibuyela kwi-liquefaction heat exchanger kwaye ingena kwinkqubo yegesi yamafutha emva kokubuyisela amandla okupholisa.
Ukubuyiswa kwetanki yokugcina i-LNG
Ukuhamba kwe-BOG yetanki yokugcina i-LNG kuxhomekeke kubushushu be-LNG, umxholo we-nitrogen kwi-LNG kunye noxinzelelo lwetanki yokugcina. Itanki yokugcina i-BOG enobushushu obuphantsi ifudunyezwa kwakhona yi-bog heater, icinezelwe yi-BOG compressor ize ibuyiselwe.
Ukubuyiswa kwe-LNG yokulayisha i-bog
I-BOG ekulayishweni nayo inobushushu obuphantsi. Emva kokuba ifudunyezwe yi-BOG heater, icinezelwa yi-BOG compressor ize ibuyiselwe.
Ukuhamba kwebhokisi ebandayo ye-BOG kunye ne-tank bog yokugcina kuzinzile, ngelixa ukuhamba kwe-BOG ekulayisheni kutshintsha kakhulu ngokomthamo wokulayisha, ngoko ke inkqubo ye-BOG compressor kufuneka ikwazi ukuphendula kolu tshintsho lukhulu ngexesha. Sisebenzisa umgaqo wokungenisa umoya we-compressor (umgaqo we-slide valve yomatshini we-screw okanye umgaqo we-air intake valve yomatshini obuyiselayo). Xa umgaqo wokungenisa umoya ufikelela kwinqanaba eliphezulu, sisebenzisa i-return valve ukunceda umgaqo, ukuze uxinzelelo lwe-BOG lukwazi ukuzivumelanisa ngokupheleleyo notshintsho olukhulu lokuhamba kwamanzi kwaye lufezekise ukubuyiselwa ngokupheleleyo kwe-BOG.
Ukuvuza kwebhokisi ebandayo
Xa ibhokisi ebandayo yesityalo se-LNG isebenza kubushushu obuphantsi obumalunga ne-163 ℃, isixhobo sayo sokutshintsha ubushushu, ivalvu kunye nombhobho kufuneka zive impembelelo yoxinzelelo lobushushu ngexesha lokuqalisa, ukusebenza okuqhelekileyo kunye nokuvalwa, okunokukhokelela ekuvuzeni kwegesi evuthayo kwinkqubo ngenxa yezizathu zoyilo okanye zokwenziwa, okubangela iingozi zokutsha okanye zokuqhuma. Sithathe amanyathelo amaninzi ukuphelisa ezo ngxaki:
Uyilo lwebhokisi ebandayo luquka uhlalutyo loxinzelelo lwemibhobho ukulawula uxinzelelo lwemibhobho ngaphakathi koluhlu oluvumelekileyo ukusuka kumthombo.
Akukho nxibelelwano lweflange phakathi kwemibhobho kunye neenqanawa ezikwibhokisi ebandayo, kwaye zonke ziqhagamshelo ezidityanisiweyo.
Zonke iivalvu zibekwe ngaphandle kwebhokisi ebandayo, nto leyo engasusi nje kuphela indawo yokuvuza, kodwa ikwanceda ukugcinwa kweevalvu.
Ibhokisi ebandayo ixhotyiswe ngeprobe yegesi evuthayo kunye neprobe yobushushu ukuze ijonge ubuninzi begesi kunye nobushushu kwibhokisi ebandayo ngexesha langempela.
Yenza ukufunyanwa kokuvuza kwe-helium mass spectrometry njengoko kufuneka.
Ixesha lokuthumela: Matshi-18-2022