Biofuel production by rapid pyrolysis method using biomass

In this study, the liquid product was investigated as a result of the catalytic depolymerization of the calcined wood shavings in powder form using slow and fast pyrolysis techniques in catalyst, lime and waste oil mixture. Due to the lignocellulosic composition of the wood chips, the content of lignin in the content determines the range of degradation of cellulose and hemicelluloses. Moisture loss due to moisture and volatile components of the wood chips, resıdual cloudy elemental content was determined by ASTM (American Society for Testing and Material) standarts with TGA (Thermo Gravimetric Analysis) device and constant carbon value was calculated. Low ash content of wood chips provides a source of high liquid product yield. Experiments with blends prepared at different rates at 300°C and 650°C under and gradual pyrolysis conditions show that total liquid product yield and solid product yield decrease in the presence of waste oil. It has been found that saturated and unsaturated hydrocarbons in waste oil are degraded by temperature and contribute to liquid product formation. The addition of catalyst and lime to the waste oil and sawdust mixture increases the liquid product yield and thus increases the liquid product yield. In this study, the heating rate and the high temperature in the catalytic degradation of wood chips resulted in an increase in liquid and gas product yields and a decrease in solid product yields. It has also been observed that in the presence of waste oil, lime and catalyst, the yield of liquid and gaseous products increases. Keywords: Rapid pyrolysis of wood chips, catalytic depolymerization, gradual and rapid pyrolysis.