Patent ID: 7758729
Filing Date: 2010-07-20
Classification: C10B,C10G,Y02P

Abstract:
1. A system for recycling plastic material, comprising: a treatment chamber containing a material comprising plastic to be recycled; a heating system that heats said treatment chamber to a temperature that results in pyrolytic cracking of said plastic; a vacuum system that pulls a vacuum on said treatment chamber and removes vapor from said treatment chamber, wherein said vapor comprises pyrolyzed inorganic species and gaseous organic species resulting from said pyrolytic cracking of said plastic; a control system including computer operable instructions that control said heating system to heat said chamber in incremental steps through a series of graduated temperature set points; a vapor treatment vessel connected to said treatment chamber, said vapor treatment vessel including a vapor exit port, wherein said vapor treatment vessel comprises a reflux heat exchanger; and a fume scrubber connected to said vapor treatment vessel, wherein said fume scrubber comprises a pH adjusted or buffered aqueous media, and said vapor generated as a result of said pyrolytic cracking of said plastic is directly contacted by the aqueous media within said fume scrubber, resulting in condensation of gaseous organic species contained within said vapor.