HOW TO REDUCE EMISSION OF NITROGEN OXIDES NOX FROM MARINE DIESEL ENGINES IN RELATION TO ANNEX VI OF MARPOL 73-78
|D O W N L O A D|
The document published by the World Maritime University, or WMU, and presents a dissertation devoted to the reduction of NOx emission from the shipboard diesel engine, in connection with the provisions of MARPOL Annex VI.
The sixth annex to the main convention on marine pollution is dealing with a broad range of air pollution prevention and control aspects including various regulations relating to the HCFCs, halons and other substances capable of depleting the ozone as well as SOx and NOx, VOCs, standing for the volatile organic compounds, incineration of garbage on board ships, and quality of the fuel oil - but the content of the annex is mainly focusing on NOx reduction.
The formation of the nitrogen oxides is normally built up as a result of the reaction between oxygen and nitrogen during the combustion, or by the reaction between the oxygen contained in the combustion air and hydrocarbon in the exhaust gas; the third way is the reaction between then nitrogen bindings in the fuel oils.
They are referred to as thermal NOx, prompt NOx and fuel NOX respectively. Note that the first one is considered decisive for the total NOx emission and it is the intent of all methods to reduce this component...
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