Synergistic effects and kinetics analysis for co-pyrolysis of vacuum residue and plastics  

作　　者：Chao Wang Xiaogang Shi Aijun Duan Xingying Lan Jinsen Gao Qingang Xiong 

机构地区：[1]State Key Laboratory of Heavy Oil Processing,China University of Petroleum-Beijing,Beijing 102249,China [2]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China

出　　处：《Frontiers of Chemical Science and Engineering》2024年第5期71-81,共11页化学科学与工程前沿（英文版）

基　　金：The authors acknowledge the support from the National Key Research and Development Program of China(Grant No.2021YFB3801300);the National Natural Science Foundation of China(Grant No.U22B20149,22021004).

摘　　要：This study utilizedathermogravimetric analyzer to assess the thermal decomposition behaviors and kinetics properties of vacuum residue(VR)and low-density polyethylene(LDPE)polymers.The kinetic parameters were calculated using the Friedman technique.To demonstrate the interactive effects between LDPE and VR during the co-pyrolysis process,the disparity in mass loss and mass loss rate between the experimental and calculated values was computed.The co-pyrolysis curves obtained through estimation and experimentation exhibited significantdeviations,whichwerei influencedby temperature and mixing ratio.A negative synergistic interaction was observed between LDPE and VR,although this inhibitory effect could be mitigated or eliminated by reducing the LDPE ratio in the mixture and increasing the co-pyrolysistemperature.Theco-pyrolysisprocess resulted in a reduction in carbon residue,which could be attributed to the interaction between LDPE and the heavy fractions,particularly resin and asphaltene,present in VR.These findings align with the pyrolysis behaviors exhibited by the four VR fractions.Furthermore,it was observed that the co-pyrolysis process exhibited lower activation energy as the VR ratio increased,indicating a continuous enhancement in the reactivity of the mixed samples during co-pyrolysis.

关 键 词：CO-PYROLYSIS heavy residual oil POLYETHYLENE thermogravimetric analysis synergistic effects 

分 类 号：TQ32[化学工程—合成树脂塑料工业]