Conversion of waste plastics material to fuel
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United States of America Patent
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Nov 20, 2018
Grant Date -
Oct 18, 2012
app pub date -
Dec 20, 2010
filing date -
Dec 22, 2009
priority date (Note) -
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Abstract
A process is described for treating waste plastics material to provide at least one on-specification fuel product. Plastics material is melted and then pyrolyzed in an oxygen-free atmosphere to provide pyrolysis gases. The pyrolysis gases are brought into contact with plates in a contactor vessel so that some long chain gas components condense and return to be further pyrolyzed to achieve thermal degradation. Short chain gas components exit the contactor in gaseous form and proceed to distillation to provide one or more on-specification fuel products. A pipe directly links the pyrolysis chamber to the contactor, suitable for conveying upwardly-moving pyrolysis gases and downwardly-flowing long-chain liquid for thermal degradation.
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