GC-MS analysis of tar from co-pyrolysis of coal with pretreated PVC

Pyrolysis of Bayi coking coal, pretreated polyvinyl chloride (PPVC) and co-pyrolysis of their mixture (with 5% PPVC) were performed in nitrogen using a 10g fixed-bed reactor. The tars from pyrolysis were analysed by GC-MS. The results indicate that the addition of PPVC extracts more oils from coal with less effect on char yield and favors the formation of methyl-substituted aromatic compounds in co-pyrolysis. It was also found that due to the formation of methyl-substituted aromatic compounds, the large size anisotropic textures of char from copyrolysis increase.