The investigation of catalytic pyrolysis products distribution from PVC plastic and rubber
The pyrolysis reactions of polyvinyl chloride(PVC)and rubber were conducted in a tube fur-nace using ZSM-5,HZSM-5,and HY catalysts.Gas chromatography-mass spectrometry(GC-MS)was em-ployed to analyze the composition of the pyrolysis products.The results demonstrate significant changes in hydrocarbon components during co-pyrolysis of PVC and rubber,depending on their mixing ratio.With HZSM-5 catalyst,the yield of aromatics from PVC-rubber co-pyrolysis reaches its maximum at 77.37％.On the other hand,HY catalyst exhibits superior conversion efficiency from monocyclic aromatic hydrocar-bons to bicyclic aromatic hydrocarbons with a peak value at 56.64％.Notably,when employing a 1∶1∶1 ratio of HY catalyst in PVC-rubber co-pyrolysis,the proportion of polycyclic aromatic hydrocarbons(PAHs)can reach as high as 23.43％.
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