Using Ultrasonic Fuel Treatment Technology to Reduce Sulfur Oxide Emissions from Marine Diesel Exhaust Gases

This paper discusses the use of additional ultrasonic fuel treatment technology to reduce sulfur oxide emissions from marine diesel exhaust gases. The research was conducted on a Bulk Carrier vessel with a deadweight of 64,710 tons with the main engine YMD MAN BW 6S50ME-C9.7 and three auxiliary diesel generators CMP-MAN 5L23/30H. The exhaust gases from all engines were treated for sulfur impurities using a scrubber system. It was stated that the combined use of the exhaust gas scrubber system and ultrasonic fuel treatment technology (compared to scrubber-only exhaust gas cleaning) results in a reduction in carbon dioxide CO 2 and sulfur dioxide SO 2 emissions, along with their ratio SO 2 /CO 2 . The additional ultrasonic fuel treatment technology has had the most significant effect on sulfur-containing components, leading to a substantial decrease in SO 2 emissions from exhaust gases. For various operating conditions of ship diesel engines, a reduction in CO 2 emissions of 2.9–7.5% and a reduction in SO 2 emissions of 9.3–33.1% were established. This achieved a reduction of 6.3 to 23.7% in the SO 2 /CO 2 ratio, a critical parameter for evaluating the performance of the scrubber system in exhaust gas cleaning, as mandated by the provisions of Annex VI of MARPOL. The requirements of the international conventions MARPOL and SOLAS were adhered to during the experiments.