Tar Kinetic Parameters of Pyrolysis Processes of Brem, Plastic, and Durian Skin Waste with Temperature Variations on A Rotary Kiln

Abstract

Pyrolysis is a decomposition process chemical ingredient by adding the heating process without oxygen, where is the raw material/biomass will experience the breakdown of chemical structures to the gas phase. It produced char, tar, and gas. This research uses a rotary kiln system, in which the pyrolysis tube is rotated at low speed. Biomass in a rotating pyrolysis tube has an even heat. The pyrolysis temperature used in this research is 523K, 57K, 623K, 673K, The heat in the pyrolysis tube comes from heating the LPG stove. The heating is adjusted in such a way that the heat can be reached at the desired temperature. The tar formed in the pyrolysis process is calculated its kinetic rate value. The biomass used in this study is a waste of brem, plastic, and durian skin. The results showed that with increasing temperature, the tar volume would increase. The value of the kinetic rate is strongly influenced by variations in pyrolysis temperature. The pyrolysis temperature is large, so the kinetic rate is also large. The best kinetic rate at a temperature of 673 K in all biomass. The type of biomass can affect the kinetic rate. Plastic waste biomass has the smallest kinetic rate value compared to other biomass. The density of bio-oil will decrease with increasing pyrolysis temperature.