1. Ukubuka konke

Njengegesi ephansi yekhabhoni futhi ehlanzekile, igesi yemvelo encibilikisiwe (i-LNG ngamafuphi) inezici ezimbili zokuvikelwa kwemvelo kanye nomnotho omuhle. I-LNG isibe umthombo oyinhloko wegesi noma umthombo wegesi wesikhashana wamadolobha angakwazi ukusebenzisa igesi yemvelo yamapayipi okwamanje ukuhlinzeka ngegesi, futhi futhi ingumthombo wegesi owengeziwe noma umthombo wegesi ogunda kakhulu wamadolobha amaningi asebenzisa igesi yemvelo yamapayipi ukuhlinzeka ngegesi. Isiteshi segesi se-LNG siyisiteshi sesathelayithi sokwamukela, ukugcina nokusabalalisa i-LNG, futhi futhi siyindawo yokulungisa ephakathi yamadolobha noma izinkampani zegesi ukudlulisela i-LNG kusuka kubakhiqizi kuya kubasebenzisi. Ngezinzuzo zesikhathi esifushane sokwakha kanye nekhono lokuhlangabezana ngokushesha nezidingo zemakethe yegesi, Iziteshi zokufaka igesi ze-LNG ziye zakhiwa kancane kancane emadolobheni amaningi amancane naphakathi ogwini oluseningizimu-mpumalanga yezwe lami ngezomnotho ezithuthukile kanye nokuntuleka kwamandla, zaba izindawo zokuphakelwa kwegesi unomphela noma ukuguquka ngaphambi kokufika kwegesi yemvelo yamapayipi. Indawo yokuphakelwa kwegesi.

Ububanzi bokuklama inqubo yesiteshi sokufaka igesi se-LNG buhlanganisa ukuthululwa kwe-LNG, ukucindezela kwesitoreji, ukufudumeza igesi, ukwelashwa kwe-BOG, ukukhishwa kokuphepha, ukulawulwa kwengcindezi kanye nokulinganisa, ukunuka, njll. Isixhumanisi sokulayisha i-LNG, okungukuthi, igesi yemvelo encibilikisiwe (LNG) igcinwa ezitsheni zamathangi, ithuthwa iye esiteshini sokufaka igesi ngamathangi omgwaqo, futhi icindezelwe yi-supercharger yokukhipha imithwalo epulatifomu yokukhipha imithwalo, kanti i-LNG ithunyelwa ethangini lokugcina i-LNG lokushisa eliphansi ngomehluko wokucindezela. Njengoba ukukhishwa kwemithwalo ye-LNG kwenziwa njalo esikhathini esithile, futhi kuhilela abashayeli nabagibeli, abasebenzi bokuphatha iziteshi, njll., okuhlobene eduze nokusebenza okuphephile kwesiteshi sokufaka igesi, ukucatshangelwa kokuphepha kwendawo yokukhipha imithwalo yamathangi e-LNG ekwakhiweni kufanele kuvuselele ukunaka kweningi labaklami bonjiniyela.

2 Ukuhlaziywa kwengozi ye-LNG

2.1 Izakhiwo zomzimba nezamakhemikhali ze-LNG

Izinga lokushisa lokugcina le-LNG livame ukuba phakathi kuka-166°C no-157°C, kanti ubuningi buphakathi kuka-430kg/m3 no-470kg/m3. Njengoba i-LNG iyi-hydrocarbon ekhanyayo ewuketshezi, umhwamuko wamanzi emoyeni uzokhishwa ezindaweni lapho kuvuza khona noma kugcwala khona. Uyaqina ukuze ukhiqize amafu amhlophe omhwamuko. Enqubweni yokugcina nokudlulisa i-LNG, igesi ye-BOG izokhiqizwa ngemva kokuvuza kokushisa. Ukwakheka kwayo kuncike ekwakhekeni koketshezi. Ngokuvamile, igesi ebilayo iqukethe i-nitrogen engu-20%, i-methane engu-80% kanye nenani elincane le-ethane. Okuqukethwe kwe-nitrogen Kungafinyelela izikhathi ezingu-20 okuqukethwe kwe-nitrogen kuketshezi lwe-LNG.

I-LNG inezici ezivuthayo neziqhumayo. Ngaphansi kwezinga lokushisa eliphansi elingu-162 °C, ububanzi bayo bokushisa bungu-6% kuya ku-13% ngobuningi. Izinga lokushisa lokushisa le-LNG liyashintsha ngokushintsha kwezingxenye, futhi ukwanda kokuqukethwe kwe-hydrocarbon esindayo kuzobangela ukusha. Ukwehla kwezinga lokushisa, ngaphansi kwesimo sokucindezela komoya, izinga lokushisa lokushisa le-methane emsulwa lingu-650 ℃.

Ngaphansi kokushisa okuvamile kanye nengcindezi, i-LNG iyaphenduka ibe yigesi bese iba uhlobo lwegesi, okungukuthi, igesi yemvelo. Igesi yemvelo iyinhlanganisela enezingxenye eziningi, ingxenye eyinhloko yi-alkane, iqukethe inani elincane le-carbon dioxide, i-nitrogen kanye nomhwamuko wamanzi, kanye namanani amancane e-helium, i-argon kanye namanye amagesi angavamile. Ngokusho kohlelo lwengozi yomlilo lwe-“Code for Fire Protection of Petroleum and Natural Gas Engineering Design”, izinga lengozi yomlilo yegesi yemvelo yi-Class A kanye ne-B.

2.2 Izingozi ze-LNG

Enqubweni yokukhipha impahla ethangini le-LNG, uma kwenzeka ingozi, i-LNG iyavuza, bese i-LNG isakazeka endaweni evamile yokushisa kanye nengcindezi, bese iba uhlobo lwegesi. Ngakho-ke, izingozi zegesi yemvelo kanye ne-LNG kufanele zicatshangelwe ekwakhiweni kobunjiniyela.

(1) Iyavutha futhi iyaqhuma. Igesi yemvelo iyigesi evuthayo futhi eqhumayo, futhi ingakha ingxube eqhumayo uma ivuza emoyeni, futhi izosha uma nje izinga lokushisa lifinyelela ku-550 °C. Uma kushisa kakhulu, ingcindezi yangaphakathi yesitsha izokhuphuka, futhi kukhona ingozi yokuqhekeka nokuqhuma. Umkhawulo wokuqhuma kwegesi yemvelo u-5% kuya ku-15%. Igesi yemvelo esitsheni nasepayipini ivuza emoyeni. Lapho ukugcwala kwayo kufinyelela umkhawulo wokuqhuma, izosha noma iqhume uma ihlangana nomthombo womlilo. Lapho ukugcwala kwegesi yemvelo kuphansi kunomkhawulo ophansi, ayiqhumi futhi ayishisi uma ihlangana nomthombo womlilo. Lapho ukugcwala kwegesi yemvelo kuphezulu Uma umkhawulo ophezulu ufinyelelwe, ngeke iqhume uma ihlangana nomthombo womlilo, kodwa ingasha.

(2) Ukusabalala okulula. Igesi yemvelo iyashintshashintsha futhi ayixinene kakhulu kunomoya, ngakho-ke akulula ukuhlala ezindaweni eziphansi ngemva kokuvuza, futhi inokusabalalisa okukhulu.

(3) Ubuthi. Igesi yemvelo iyinhlanganisela ye-hydrocarbon engenambala, engenaphunga, futhi engenabo ubuthi, kodwa ukuchayeka isikhathi eside kungabangela i-neurasthenic syndrome. I-Methane iyigesi "ebangela ukufutha kobulili obubodwa". Uma ukuhlushwa kuphezulu kakhulu, okuqukethwe komoya-mpilo emoyeni kungancishiswa kakhulu, okubangela ukuminyana. Lapho i-methane emoyeni ifinyelela ku-25% kuya ku-30%, ingabangela ikhanda elibuhlungu, isiyezi, ukukhathala, ukungakwazi ukugxila, njll.

(4) Ukwanda kokushisa. Umthamo wegesi yemvelo uzokhula ngokwanda kokushisa. Lapho ipayipi livezwa elangeni noma eduze komthombo wokushisa oshisa kakhulu, igesi yemvelo iyakhula ngenxa yokushisa nokukhula, okubangela ukuba ingcindezi yangaphakathi yepayipi ikhule futhi ikhule, okuholela ekulimaleni kwesitsha kanye nokuvuza kwegesi yemvelo.

(5) Izinga lokushisa eliphansi kanye nokupholisa okuphezulu kwe-LNG. Izinga lokushisa lokugcina le-LNG lingu-162 ℃. Ngemva kokuvuza, ifu le-jet noma i-vapor ebandayo lizokwenza ezinye izinto ezithintana nalo zibe buthakathaka, zibe buthakathaka, noma zibangele ukushwabana okubandayo, okuholela ekulimaleni kwamapayipi, ama-weld, kanye nokufakwa kwamapayipi kanye nokuvuza. Uketshezi noma igesi epholile kakhulu kuzobangela ukusha kwezinga lokushisa eliphansi, i-frostbite kanye nezinye izingozi emzimbeni womuntu.

Xhumana nathi:

I-Sichuan Hengzhong Automation Equipment Co., Ltd.

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