稻壳与PVC共热解协同效应及气体产物释放规律研究OA

In order to promote waste valorization and mitigate environmental pollution,a systematic analysis of the co-pyrolysis behavior,synergistic effects,and gaseous product evolution of PVC and rice husk(RH)was conducted using thermogravimetric analysis and tube furnace experiments.The results show that there are significant differences between the individual pyrolysis processes of PVC and RH,as well as between their co-pyrolysis process;the initial devolatilization temperature of the mixed sample is lower than that of PVC and RH during their individual pyrolysis,and PVC can promote the co-pyrolysis reaction to some extent;PVC and RH mixture exhibited significant synergistic effects between 220～420℃,with the most pronounced synergy occurring at a 3:7 mixture ratio;the activation energy of PVC is 170.51 kJ/mol,and that of RH is 219.30 kJ/mol,with the experimental activation energy of the co-pyrolysis samples being lower than the theoretical values.PVC pyrolysis mainly generates H2 and CH4,while RH generates CO and CO2.The co-pyrolysis of PVC and RH promotes the generation of H2 and reduces the pyrolysis activation energy,providing a theoretical basis for maximizing the resource utilization of biomass waste and waste plastics.