Understanding the Dechlorination of Chlorinated Hydrocarbons in the Pyrolysis of Mixed Plastics

The dechlorination of chlorine containing hydrocarbons in pyrolysis vapor is poorly understood. In order to shed new light on the mechanism, a model mixture composed iso-octane doped with 2-chlorobutane, 2-chloroethylbenzene, and chlorobenzene was used study chlorinated by alkali adsorption. These three were selected as they can be typically produced from mixed plastic waste polyvinyl chloride (PVC). pumped continuously through Na2CO3 or CaCO3/alumina bed, GC-MS identify products follow reactions. When bonded an aliphatic carbon adjacent hydrogen, compound first undergoes dehydrochlorination reaction form HCl olefins, subsequently reacted absorbents. our experiments, 2-chlorobutane converted 2-butene, 2-chloroethylbenzene styrene. formation subsequent components absorbent verified IR spectroscopy XRD. presence alkali, underwent at temperature 180 °C. removal aromatic compounds operates different which C–Cl bond scission promoted significantly alumina hydrocarbon medium. It found that forming phenol benzene.