Using scrubbers while burning residual fuels would help reduce global CO2 levels, a new study published by Norwegian researchers confirmed.
The continued use of heavy fuel oil with an exhaust gas cleaning system (EGCS) is the most environmentally beneficial means of meeting global greenhouse gas (GHG) emissions targets, Chief Scientist Dr. Elizabeth Lindstad concluded in a study published by Norway’s SINTEF.
“Studies indicate that two-stroke engines with Exhaust Gas Recirculation (EGR) and scrubbers represent the most cost- and GHG-effective way of meeting both IMO Tier 3 NOx rules and the 2020 sulphur cap,”Dr. Lindstad said.
Dr. Lindstad stated that based on the energy consumed during the global production of distillate fuels, the continued use of residual fuel will have a positive impact on global GHG emissions, given the energy required to produce distillates would result in higher levels of CO2 being released into the atmosphere.
“With new modern refineries set up to convert crude into higher priced products, HSFO will, from 2020, be delivered from existing refineries where its share of energy consumption can be considered to be next to nothing. The explanation is that the heavy bunker oil coming out from the refinery is the bottom of the barrel. If we acknowledge the lower energy consumption in delivering HSFO and deduct the refining we get 9 to 10g of CO2 equivalent per MJ for HFO, rather than 13 to 15 of CO2 equivalent per MJ for LSFO/MGO.”
Dr. Lindstad also believes that emissions abatement rules need to be reviewed to consider pollution problems in different areas.. . . . .
finish reading the article on the World Maritime News website here