Thermogravimetric Analysis and Kinetics Study of MSW and Wood Pellet Co-Gasification Using Flue Gas as a Medium

This study investigates thermogravimetric analysis (TGA) and kinetics study (KS) of the co-gasification of municipal solid waste (MSW) and wood pellets (WP) using flue gas as the gasification medium. Our novel decoupling gasifier design facilitates a gasification process utilizing flue gas as the reaction medium. Therefore, studying the thermal decomposition characteristics of MSW and WP during this unique gasification process is crucial. Thermal decomposition exhibited two stages based on mass loss and the rate of mass loss. The maximum mass loss rate occurred during the first stage for all samples at temperatures of 286.5/318 (two peaks), 286.5, and 293.4 ºC for 0WP100MSW, 10WP90MSW, and 20WP80MSW, respectively. The addition of WP to MSW significantly increased the DTG maximum value and eliminated the second decomposition peak of MSW. KS illustrates that the E value decreased from 19.70 to 3.35 kJ/mol under air and 64.05 to 2.12 kJ/mol under flue gas with the addition of 20%wt wood pellets.