Application of general third-order Gaussian distribution activation energy model in the combustion of solid waste

作者：Luo, Jiangcheng; Liao, Yanfen^*; Chen, Limei; Xia, Yuqing; Wu, Junnan; Ma, Xiaoqian

来源：Energy Sources, Part A: Recovery, Utilization and Environmental Effects , 2021.

DOI：10.1080/15567036.2021.1958957

• General Gaussian distributed activation energy model
• local sensitivity analysis
• model prediction
• municipal solid waste
• sewage sludge

Solid waste had a variety of components, and its complex and obscure combustion behavior brought challenges to calculate the kinetic parameters accurately. Therefore, the thermogravimetric experiments of municipal solid waste and sewage sludge were carried out and a general third-order Gaussian distributed activation energy model was built. The combustion components of solid waste could be divided into three categories: light volatile components, heavy volatile components, and fixed carbon. The kinetic model matched the experimental data well, the adjR(2) was above 0.9994 and the global activation energy was within a reasonable range of 54.85 kJ/mol-178.04 kJ/mol. Local sensitivity analysis found that the average activation energy had a strong influence on the stability of the model, and the degree of influence was positively correlated with the content of combustion components. In addition, the model had the ability to predict experimental data under unknown conditions.