Thermogravimetric Studies Of Behavior Of Biomass With Added Coal During Gasification

In this paper, the gasification experiments of kinds of raw materials, including biomass samples, coal with different grade and the mixture samples with different blending ratio, were conducted in situ through thermal gravimetric analysis. It was found that the characteristics of mixture gasification, in situ refer to the staring temperature and the end temperature of reactions, have been proven to be improved owing to increasing the blending ratio of the biomass samples including rice straw, pine sawdust and waste tire; moreover, at the low temperature scale, the synergy effect occurred in the co-gasification of biomass with coal. With the respect of the increase of heating rate, the max weight-loss rate and the peak temperature with max weight-loss rate as well as the range of temperature scale corresponding to weight-loss scale were all shown the positive trend underlying the gasification of either biomass or coal alone, and that a subsequent the reaction time was favorable to reduce. The kinetics were calculated, based on the data of TGA curves, meanwhile, employed the Homogeneous Model and Shrinking Core Model for data analysis.