基于双组分模型,分别利用改良Coats-Redfern积分法和Vachuska-Voboril微分法分析了棉秆催化热解的失重动力学。研究表明:棉秆催化热解过程均由失水区、活化热解区(APS)和消极热解区(PPS)构成,纯棉秆热解时的PPS不明显。改良Coats-Redfern积分法和Vachuska-Voboril微分法均适用于基于双组分模型的棉秆催化热解动力学分析,但改良Coats-Redfern积分法的拟合结果更接近于实验数据。催化剂的加入显著促进了PPS组分的热解,在所选用催化剂中,MCM-41催化活性最高。 Based on the two-component model, the weight loss kinetics of cotton straw catalytic pyrolysis was analyzed by modified Coats-Redfern integral method and Vachuska-Voboril differential method. The results showed that the cotton pyrolysis process consisted of dehydration zone, activated pyrolysis zone (APS) and negative pyrolysis zone (PPS), while the PPS was not obvious when the cotton straw was pyrolyzed. Both the modified Coats-Redfern integral method and the Vachuska-Voboril differential method are suitable for the kinetic analysis of cotton straw catalytic pyrolysis based on the two-component model, but the fitting result of the modified Coats-Redfern integral method is closer to the experimental data. The addition of catalyst significantly promoted the pyrolysis of PPS component. Among the selected catalysts, MCM-41 had the highest catalytic activity.