Evaluation of Ignition Characteristics on Blended Residual Oil relaimed from Waste Plastics

This paper describes the results of ignition and combustion characteristics tests conducted on the residual oil produced by the commercial waste plastics oil reclamation system, from the viewpoint of studying its feasibility as a fuel oil for diesel engines. A fuel ignition analyzer (FIA) was used for the ignition test, and a medium-speed diesel engine with 200mm cylinder bore was used for the combustion test. The authors studied combustion performance at different blending ratios of new-reclaimed residual oil to marine diesel oil and at different fuel temperatures, to identify optimal conditions. It is found that the new-reclaimed residual oil (RRO) is distinctly better than MDO in FIA ignition characteristics. Additionally, the analysis results indicate the good correlation between FIA centane number and the centane index (JIS K2204) on blended test fuel oils of RRO.