【摘要】 聚氯乙烯（PVC）因具有较高的有效氢碳比(H/C_eff)，和纤维素共热解可提高碳氢化合物的产率，减少结焦量。采用热重分析与傅里叶变换红外光谱联用（TG-FTIR）的方法，分析纤维素与PVC共热解过程中非凝气体官能团的变化。结果表明：纤维素/10%PVC在加热过程中（<400℃）HCl和CH₄的吸收强度分别为0.003 2、0.000 9，相较纯PVC减少0.008 8、0.004 9。混合物料的使用减少了CH₄和HCl的生成量，导致HCl提前逸出，低温区（<500℃）CO和CO₂生成量增加。纤维素/10%PVC与纯纤维素的热解过程相似，分为两个阶段。随着PVC在材料中所占比例的增加，其动力学参数下降。根据共热解过程可能参与的反应方程式，计算200～800℃范围内的吉布斯自由能，确定反应是否自发进行。采用HSC软件对热解产物进行模拟，当PVC在混合料中所占比例较小，该过程更有利于H₂、CO和CO₂的生成，在530℃条件下CO₂收率最佳。更多还原

【Abstract】 Polyvinyl chloride（PVC） has a high effective hydrogen-carbon ratio (H/C_eff),and co-pyrolysis with cellulose can increase the yield of hydrocarbons and reduce coking.The changes of non-condensable gas functional groups during the co-pyrolysis of cellulose and PVC were analyzed by thermogravimetric analysis and Fourier transform infrared spectroscopy （TG-FTIR）.The results show that the absorption intensity of HCl and CH₄ in cellulose/10% PVC during heating （<400℃） are 0.003 2 and 0.000 9,respectively,which are 0.008 8 and 0.004 9 lower than that of pure PVC.The use of the mixture reduces the production of CH₄ and HCl,resulting in the early escape of HCl and the increase of CO and CO₂ production in the low temperature region （<500℃）.The pyrolysis process of cellulose/10%PVC is similar to that of pure cellulose,which is divided into two stages.As the proportion of PVC in the material increases,its kinetic parameters decrease.According to the reaction equation that may be involved in the co-pyrolysis process,the Gibbs free energy in the range of 200～800℃ is calculated to determine whether the reaction is spontaneous.The pyrolysis products were simulated by HSC software.When the proportion of PVC in the mixture is small,the process is more conducive to the formation of H₂,CO and CO₂,and the yield of CO₂ is the best at 530℃.更多还原