基于TG-MS的糠醛渣与红庆河煤共热解特性及动力学研究OA

The co-pyrolysis of carbon-containing organic materials can achieve complementary material properties and compositions among different raw materials,thus showing greater advantages compared to the pyrolysis of a single material.The mass loss behavior and the evolution of major gaseous products during co-pyrolysis of furfural residue(FR)with Hongqinghe bituminous coal(BC)were investigated based on thermogravimetric-mass spectrometry(TG-MS).Additionally,the co-pyrolysis synergistic effects in different conditions were compared,and the kinetics of the pyrolysis process was analyzed through the distributed activation energy model(DAEM).The TG-MS results indicate that there is a strong pyrolysis interaction between FR and BC at 350℃‒450℃,and the addition of BC expands the temperature range of the gaseous products generated by pyrolysis.H2,CH4 and CO released by the co-pyrolysis are mainly generated at 300℃‒800℃.The co-pyrolysis of FR and BC shows a stronger synergy at 450℃.The char yield(48.75%)of the sample with 70%FR is 1.31%lower than the theoretical value(50.06%),indicating that the co-pyrolysis can inhibit char formation and facilitate the generation of more oil and gas components.The pyrolysis conversion rate of FR reaches 70%at a relatively low temperature of 356℃.The DAEM kinetic calculation shows that the minimum activation energy(121 kJ/mol)of the co-pyrolysis of FR with BC is lower than those of FR pyrolysis(147 kJ/mol)and BC pyrolysis(139 kJ/mol).The co-pyrolysis of FR with BC reduces the reaction difficulty.This study indicates that there is a synergistic effect in the co-pyrolysis of FR with BC.