CO-PYROLYSIS OF GÖYNÜK OIL SHALE WITH POLYPROPYLENE AND STRUCTURAL CHARACTERIZATION OF PYROLYSIS LIQUID

Abstract

This study is based on the purpose of obtaining high yields of liquid product by subjecting the oil shale sample taken from one of our country's important oil shale deposits and polypropylene (PP) mixtures to co-pyrolysis process. In this study, the oil shale sample and the polypropylene were firstly subjected to pyrolysis process, and then the mixture obtained by mixing of these at certain ratios was subjected to pyrolysis process. Pyrolysis experiments were performed at three different mixture ratios of 33%, 50% and 67% PP in the mixture, and in the temperature range of 600°C-800°C. The gas, liquid and solid product yields obtained as a result of the experiments were calculated, and the effect of PP which was added to oil shale and the changed pyrolysis temperature on the yield of liquid product was examined. As a result of the experiments, the highest liquid product yield was achieved in the mixture ratio containing 67% PP at 800°C. Various catalysts were added to the medium in which the highest liquid product yield was achieved, and the effect of catalysts on the liquid product yield obtained from pyrolysis was examined. The structure of the liquid products which were obtained as a result of the experiments was investigated by various spectroscopic methods such as GC-MS and FTIR, and the effects of experimental conditions on the structure of the liquid product were analyzed. Consequently, a noticeable synergistic effect was observed in the yield of the liquid product which was obtained as a result of the co-pyrolysis of PP and oil shale, and this effect further increased with the catalyst added to the medium.