Inkqubo yonyango yegesi yokukhupha inqanawa (ikakhulukazi ibandakanya i-denitration kunye ne-desulfurization subsystems) sisixhobo esingundoqo sokukhusela inqanawa efunekayo ukuba ifakwe yi-International Maritime Organisation (IMO) ingqungquthela ye-MARPOL.Iqhuba i-desulfurization kunye ne-denitration unyango olungenabungozi kwi-exhaust gas ye-injini ye-diesel ukukhusela ungcoliseko lomoya olubangelwa ukukhutshwa okungalawulwayo kwegesi yokukhupha inqanawa.
Ngokujonga ukwanda kolwazi ngokhuseleko lokusingqongileyo kunye nokunyuka kokuqondwa kwabaphathi beenqanawa, imfuno yentengiso yeenkqubo zokunyanga igesi yokukhupha inqanawa inkulu.Okulandelayo, siza kuxoxa nawe kwiimfuno ezichaziweyo kunye nemigaqo yenkqubo:
1. Iimfuno zokuchazwa ezifanelekileyo
Kwi-2016, i-Tier III yaqala ukusebenza.Ngokwalo mgangatho, zonke iinqanawa ezakhiwe emva kwe-1 kaJanuwari 2016, kunye ne-injini ye-injini ye-130 kW nangaphezulu, ihamba ngomkhumbi eNyakatho Melika kunye ne-US Caribbean Emission Control Area (ECA), ixabiso le-NOx lokukhutshwa aliyi kudlula i-3.4 g. /kWh.Imigangatho ye-IMO Tier I kunye ne-Tier II iyasebenza kwihlabathi jikelele, i-Tier III ilinganiselwe kwiindawo zokulawula ukukhutshwa, kunye neendawo zolwandle ngaphandle kwale ndawo ziphunyezwa ngokuhambelana nemigangatho ye-Tier II.
Ngokwentlanganiso ye-IMO ka-2017, ukusuka ngomhla woku-1 kuJanuwari ka-2020, umda wesulfure we-0.5% wehlabathi jikelele uya kuphunyezwa ngokusemthethweni.
2. Umgaqo wenkqubo ye-desulfurization
Ukuze kuhlangatyezwane nemigangatho yokukhutshwa kwesalfure eyandayo, abaqhubi beenqanawa basebenzisa i-oyile yesalfure ephantsi, inkqubo yokucocwa kwegesi yokukhupha okanye amandla acocekileyo (iinjini ze-LNG ezimbini zamafutha, njl. njl.) kunye nezinye izisombululo.Ukukhethwa kwesicwangciso esithile ngokuqhelekileyo kuqwalaselwa ngumnini nqanawa ngokudibanisa nohlalutyo lwezoqoqosho lwenqanawa yangempela.
Inkqubo ye-desulfurization ithatha iteknoloji emanzi edibeneyo, kunye neenkqubo ezahlukeneyo ze-EGC (i-Exhaust Gas Cleaning System) zisetyenziselwa kwiindawo ezahlukeneyo zamanzi: uhlobo oluvulekileyo, uhlobo oluvaliweyo, uhlobo oluxubileyo, indlela yamanzi olwandle, indlela ye-magnesium, kunye nendlela ye-sodium ukuhlangabezana neendleko zokusebenza kunye nokukhutshwa. .udibaniso olufanelekileyo olufunekayo.
Ixesha lokuposa: Aug-16-2022