Izindlu Zokugcina Amafutha Emoyeni Ezindaweni Zokugcina Uwoyela Oluhlaza: Umhlahlandlela Wezobunjiniyela Nokuklama
Kwadalwa ngo 2025.08.12
Umhlahlandlela Wobunjiniyela Nokuklanywa Kophahla Oluntantayo Lwamathangi Okugcina Uwoyela Ongahluziwe
Uphahla oluntantayo lukawoyela ongahluziwe luyisithiyo esakhiwe ngendlela eguquguqukayo esifakwa ngaphakathi kuthangi lokugcina uphethiloli, futhi luntanta ngqo ebusweni boketshezi. Ngokukhuphuka nokwehla kanye nezinga likawoyela ongahluziwe, uphahla oluntantayo luqeda cishe ngokuphelele indawo yomoya (ullage) lapho amagesi aqhumayo kanye nama-Volatile Organic Compounds (VOCs) evame ukuqongeleleka khona. Ngokugcina uwoyela ongahluziwe—okubandakanya "izingxenye ezilula" ezihwamukayo kanye nezinto ezibolayo—uphahla oluntantayo luyisixazululo esiyimpoqo embonini ukuvimbela ukuhwamuka komkhiqizo, ukuqinisekisa ukuthobela i-API 650, kanye nokunciphisa izingozi ezinkulu zomlilo.
1. Isidingo Sobunjiniyela: Ukuthi Kungani Uwoyela Ongahluziwe Udinga Uphahla Oluntantayo
Uwoyela ongahluziwe awukona uketshezi olufanayo; ingxube eyinkimbinkimbi yama-hydrocarbon kusukela kuma-asphaltene asindayo kuya kumagesi ancibilikayo aguquguqukayo kakhulu njenge-methane, i-butane, ne-propane. Ukuwugcina emathangini anophahla olungaguquki kuletha izingozi ezinkulu zokusebenza:
● Ukuhwamuka Nokulahlekelwa Kwezimali: Uwoyela ongahluziwe ongavalwanga ulahlekelwa ngokushesha izingxenye zawo ezibalulekile ezilula ngokuhwamuka. Uphahla oluntantayo luvimbela lokhu kuhwamuka, lusindisa izigidi zamadola ekulahlekelweni komkhiqizo empilweni yethangi.
● Ukuthobela Imvelo & VOC: Izinhlaka ezilawulayo (njenge-EPA e-US) ziyala ngokuqinile ukulawulwa kwezinto ezingcolisayo eziyingozi emoyeni. Uphahla oluntantayo ngokuvamile lufeza ukunciphisa okungama-95% kuya ku-99% ekukhishweni kwe-VOC uma kuqhathaniswa namathangi anophahla olungaguquki.
● Ukuphepha Komlilo: Ngokuqeda ingxube ye-vapor ne-oksijini ngaphezu koketshezi, uphahla oluntantayo lususa isizathu esiyinhloko semililo yamathangi, kucindezela noma yikuphi ukuvutha okungenzeka endaweni encane yomphetho kunokuba kube kuwo wonke ububanzi bethangi.
2. Izinhlobo Zamaphahla Antantayo Okugcina Uwoyela Onzima
Uwoyela onzima uvame ukugcinwa emathangini amakhulu kakhulu (avame ukudlula amamitha angu-60/amafidi angu-200 ububanzi). Ukukhethwa komklamo wophahla kuncike kakhulu kubukhulu bethangi, isimo sezulu sendawo, kanye nokuminyana kukawoyela.
Amaphahla Angaphandle Antantayo (EFR)
Ithangi alinaphahla elihleliwe; uphahla oluntantayo luvezwe ngqo esimweni sezulu.
● I-EFR enezitezi ezimbili: Izinga lamathangi amakhulu ka-crude. Yakhiwe ngamapulangwe ensimbi amabili aphelele ahlukaniswe ngama-bulkhead angaphakathi. Lokhu kuklanywa 'kwesemishi' kunikeza ukuntanta okukhethekile, ukuqina okuphezulu kwesakhiwo ngokumelana nomoya, kanye negebe lokufudumala elivimbela ilanga ukuba libilise i-crude engezansi.
● I-EFR ene-Single-Deck Pontoon: Inesiteji sensimbi esimaphakathi esizungezwe ama-pontoon antantayo. Iyonga kakhulu kodwa ngokuvamile isetshenziselwa amathangi amancane ngenxa yokuqina kwayo okuphansi uma kuqhathaniswa nokuklanywa kwezitezi ezimbili.
Uphahla Oluntantayo Lwangaphandle Olunegumbi (Domed EFR)
Lokhu kubandakanya ukufaka kabusha ithangi le-EFR ngophahla lwe-aluminium lwe-geodesic dome.
● Ukuvikelwa Kwesimo Sezulu: Idome livikela uphahla oluntantayo emvuleni, eqhweni, nasemoyeni, lisusa isidingo sezinhlelo eziyinkimbinkimbi zokukhipha amanzi emvula (amapayipi okukhipha amanzi) avame ukwehluleka kuma-EFR endabuko.
● Ukunciphisa Ukukhishwa Kwamagesi: Idome livimba umoya ukuba ungadluli phezu kwezivalo zomphetho, okunciphisa kakhulu ukulahleka okubangelwa umoya ngenxa yokuhwamuka.
3. Izinhlelo Zokuvala: Ukuxhumana Okubalulekile
Uphahla oluntantayo lusebenza ngempumelelo kuphela ngendlela isistimu yalo yokuvala esebenza ngayo. Ngenxa yokuthi uphahla kufanele lube luncane kancane kunethangi ukuze luhambe ngokukhululeka, igebe eliyindilinga kufanele livalwe ngokuqinile. I-API 650 Annex C ibeka izimfuneko eziqinile zalezi zingxenye.
● Izimpawu Eziyinhloko: Umugqa wokuqala wokuvikela. Ngokayela ongahluziwe, ama-Mechanical Shoe Seals ajwayelekile kakhulu. Lawa afaka ishidi lensimbi eligcinwa liqinile edongeni lethangi ngama-spring noma izisindo, kanye nendwangu evimbela umusi evalela igebe eliya ophahleni. Ahlala isikhathi eside futhi amelana nokugqokwa okubangelwa ukushelela ensimbi.
● Ama-Seal Esesibili: Afakwa ngaphezu kwe-seal eyinhloko, ngokuvamile abe yisimo se-flexible elastomer wiper. Lokhu kunikeza ukulawulwa komhwamuko okuphindwe kabili futhi kusebenze njengesivikelo sezulu, kugcina imvula nokungcola kungangeni endaweni ye-seal eyinhloko.
4. I-Matrix Yokuqhathanisa: Ukucushwa Kophahla Lwe-Crude
Isici | I-EFR Evulekile Phezulu (I-Double Deck) | I-EFR Enedome | Uphahla Oluntantayo Olungaphakathi (IFR) |
Ububanzi Bamethangi Ojwayelekile | Mikhulu Kakhulu (>60m) | Mikhulu kuya Kukhulu Kakhulu | Incane kuya Emaphakathi (<45m) |
Ukuba Sengingozini Yesimo Sezulu | Phezulu (Idinga amapayipi okukhipha amanzi ophahleni) | Phansi (Ivikelwe yidome) | Phansi (Ivikelwe uphahla olungaguquki) |
Ukukhishwa Komoya Okubangelwa Umoya | Okumaphakathi | Kuphansi Kakhulu | Kuphansi Kakhulu |
Umthwalo Wokunakekela | Phezulu (Ukuphathwa kwamanzi/iqhwa) | Okumaphakathi | Kuphansi |
Izindleko Zemali | Isisekelo | Phezulu (Idome lingeza izindleko) | Okulinganiselayo |
5. Izinselele Zokusebenza Nokucatshangelwa Kwezinsimbi
Ukugqwala Kukawoyela Onoshukela:
Uwoyela ongahluziwe uvame ukuqukatha amazinga aphezulu e-Hydrogen Sulfide (H2S), owaziwa ngokuthi "uwoyela onoshukela." I-H2S igqwala kakhulu insimbi evamile yekhabhoni. Izintaba ezintantayo emsebenzini wowooyela onoshukela zidinga ukuthuthukiswa okuqinile kwezinsimbi, njengokufaka izinto zokugqoka ze-epoxy ezikhethekile ngaphansi kwedekhi, noma ukusetshenziswa kwezingxubevange ezingagqwali ukuze kuvikelwe izivalo zezicathulo zemishini ekugqwaleni okusheshayo.
Ukwehluleka Kokukhipha Amanzi Ophahleni:
Kuma-EFR avulekile phezulu, amanzi emvula aqoqana ophahleni futhi kufanele akhishwe ngohlelo lwamapayipi agobekayo ehla ngaphakathi kukawoyela ongahluziwe aye kwivalvu esisekelweni sethangi. Uma lo msele wokukhipha amanzi uba yiqhwa, uvaleka, noma uqhekeka, isisindo samanzi singacwilisa uphahla oluntantayo—ukwehluleka okuyinhlekelele futhi okubiza kakhulu. Ukuhlola njalo indawo yokuqoqa amanzi namalunga omsele wokukhipha amanzi kungumsebenzi obaluleke kakhulu wokunakekela kumsebenzisi we-EFR.
Ophahla oluntantayo luyisisekelo sokuphepha kanye nemvelo yokugcina uwoyela ongahluziwe emhlabeni wonke. Noma ngabe kusetshenziswa i-Double-Deck EFR enkulu ukuze kusingathwe amanani e-super-tanker, noma kufakwe i-Geodesic Dome ukuze kuncishiswe ukukhishwa kwemfucumfucu kanye nokuqeda izingozi zezulu, ubunjiniyela obunembile ngokuhambisana ne-API 650 akunakuxoxiswana. Ngokutshala imali ezinhlelweni zokuvimba ezisezingeni eliphezulu kanye nezakhiwo eziqinile zophahla, abaqhubi bamachweba bavikela izimpahla zabo ezibaluleke kakhulu ekuhwamukeni kanye nasekwehlulekeni okuyinhlekelele.
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