Abstract
Effects of addition of waste plastic on the pelletizing and the combustibility of heavy oil ash were studied in this work. Carbon content and volatile matter of the heavy oil ash used in this study were about 80 and 20 wt% (dry basis), respectively. And the particle was very fine (below 40 μm in diameter) and porous (about 10 m2/g in surface area). The mixture of heavy oil ash and waste plastic in the weight ratio of 1 : 3 could be pelletized by heating at 180 °C for 1 h and then cooling to room temperature. From the combustion behavior of the mixed samples by thermogravimetric analysis, it was observed that experimental weight loss was much larger than theoretical weight loss, calculated as an algebraic sum of those from each separated component, in the low temperature region (300 - 400 °C). This indicates a significant synergistic effect during combustion of heavy oil ash mixed with waste plastic.
