Development and Evaluation of Marine Fuel Oil for Clean Environment and Reduction of Running-Cost —Utilization of Waste Plastics (WPD)

In order to revitalize sea transportation it is essential to be capable of using low-cost, low-quality fuel oil with simplified fuel systems, the emissions of which must be environmental-friendly. The authors of this paper have developed the blended oil of Marine Heavy Fuel Oil (C-Oil) and pyrolytic oil made of household and industrial waste plastics (hereafter called Waste Plastic Disposal or WPD) and applied it to diesel engines. The experiment on the engine with non-preheated blended oil has shown the stable operation of the engine. This would lead to the significant reduction of heating cost. Furthermore, the emission of soluble organic fraction (SOF) also decreases. This paper discribes the effects of sulfur content on the engine performance and emission. However, NOx emission slightly increases so that the emulsified fuel oil has been made with the aid of capsule-typed additives. The experimental emulsion fuel oil (Emulsion F.O) containing 10% (v) water and 0.3% (v) additives indicates stability and helps to reduce NOx emission almost by half.