Abstract

The effect of cellulose on pyrolysis characteristics of coal gangue was studied based on TG-FTIR experiment. Cellulose with different mass ratios is added to coal gangue. Synergistic effect between cellulose and coal gangue on mass loss was observed in this study. CG1CEL1 and CG1CEL3 samples have mutual promotion effect between CG and CEL. Conversely, the inhibitory effect of CG3CEL1 between CG and CEL was evident at high temperature. The reaction mechanism of coal gangue and cellulose co-pyrolysis based on lumped reaction model was determined. Furthermore, the comprehensive influencing factors of coal gangue and cellulose co-pyrolysis were analyzed by principal component analysis. There is little research on the influence mechanism of cellulose, the main component of biomass, on the pyrolysis of coal gangue. This paper is of great significance to clarify the mechanism of co-pyrolysis of biomass and coal gangue. This study provides a basis for revealing the influence mechanism of cellulose on coal gangue pyrolysis, which accelerates the process of carbon neutralization. This can promote resource disposal of coal gangue by reduction, so as to reduce environmental pollution and improve the utilization rate of fossil energy.

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