Co-pyrolysis characteristics of sawdust and coal blend in TGA and a fixed bed reactor

Co-pyrolysis characteristics of sawdust and coal blend were determined in TGA and a fixed bed reactor. The yield and conversion of co-pyrolysis of sawdust and coal blend based on volatile matters are higher than those of the sum of sawdust and coal individually. Form TGA experiments, weight loss rate of sawdust and coal blend increases above 400 °C and additional weight loss was observed at 700 °C. In a fixed bed at isothermal condition, the synergy to produce more volatiles is appeared at 500-700 °C, and the maximum synergy exhibits with a sawdust blending ratio of 0.6 at 600 °C. The gas product yields remarkably increase at lower temperature range by reducing tar yield. The CO yield increases up to 26% at 400 °C and CH₄ yield increases up to 62% at 600 °C compared with the calculated value from the additive model.