As a resource compatible and environmentally less hazardous method to treat waste plastics, co-coking
technology of coal and waste plastics has been developed. The authors [1] have developed a recycling process for
waste plastics using coke ovens. Here, the waste plastics are thermally decomposed with coal at a high-temperature
reducing atmosphere in the coke oven chamber then converted to coke, tar, light oil and gas. Nippon Steel
Corporation has successfully operated a waste plastics recycling process using coke ovens at Nagoya and Kimitsu
Works in 2000 and at Yawata and Muroran Works in 2002 [2]. M.A. Diez et al. have shown that the composition of
plastics wastes and the coking conditions (i.e. bulk density of the charge) have an effect on coke quality [3].
However, no method to forecast the effect of waste plastics added on coke quality for co-carbonization of
coal/plastic mixtures has been reported