Co-pyrolysis Characteristics of Torrefied Coconut Shell and Coal

Abstract

The co-pyrolysis of torrefied coconut shell (TCS) and Shenhua coal (SHC) was performed using a thermogravimetric analyzer (TGA). The pyrolysis and interaction characteristics of the raw feed materials (TCS and SHC) along with selected mass blend ratios were investigated. Compared to pyrolysis alone, the blend ( Blend1-2 and Blend2-1) have one more maximum weight loss rate peaks. Initial decomposition temperature and maximum weight loss rate temperature gradually increase with increasing heating rate. There are two kinds of interaction was observed: physical and chemical interactions. Both the heating rate and the blending ratio have influence on the interaction. There is no chemical interaction at 3°C/min heating rate, and the physical dominates the interaction progress. At a heating rate of 3oC/min, both interactions exist, and the physical process dominates the progress of the interaction. The higher the mass ratio of TCS in the blend, the more significant the physical interaction.