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Process for converting waste plastic into lubricating oils

  • US 20030199718A1
  • Filed: 04/18/2002
  • Published: 10/23/2003
  • Est. Priority Date: 04/18/2002
  • Status: Active Grant
First Claim
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1. A continuous process for converting waste plastic into lube oil stock comprising:

  • (a) passing a waste and/or virgin polyolefin into a heating unit maintained at a temperature between 150°

    C. and 350°

    C. (b) continuously passing the molten feed through a flow-through pyrolysis reactor maintained at a temperature sufficient to depolymerize at least a portion of the polyolefin and at an absolute pressure of at least one bar to produce a pyrolyzed effluent;

    (c) passing at least a portion of the effluent from the pyrolysis reactor to a catalytic isomerization dewaxing unit;

    (d) fractionating the product from the isomerization dewaxing unit; and

    (e) recovering a lubricating oil base stock.

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