×

Process for making a lubricating composition

  • US 6,288,296 B1
  • Filed: 02/04/2000
  • Issued: 09/11/2001
  • Est. Priority Date: 12/30/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A process for making a high VI lubricating oil composition comprising the steps of:

  • (a) passing a waste plastics feed comprising polyethylene to a pyrolysis zone, whereby at least a portion of said waste plastics feed is cracked, thereby forming a pyrolysis zone effluent comprising 1-olefins and n-paraffins;

    (b) passing said pyrolysis zone effluent, to a separations zone, thereby separating said pyrolysis zone effluent into at least one heavy fraction and one middle fraction, said middle fraction comprising 1-olefins;

    (c) passing said pyrolysis effluent middle fraction to a dimerization zone, where said pyrolysis effluent middle fraction is contacted with a dimerization catalyst at dimerization conditions, wherein at least a portion of said pyrolysis effluent middle fraction is dimerized;

    (d) passing at least a portion of said dimerized pyrolysis effluent middle fraction to a catalytic hydrotreating zone wherein at least a portion of said dimerized pyrolysis effluent middle fraction is contacted with a hydrotreating catalyst at hydrotreating conditions, thereby producing a hydrotreated dimerized pyrolysis effluent middle fraction; and

    (e) passing at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction to a catalytic isomerization dewaxing zone, wherein at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction is contacted with a isomerization dewaxing catalyst at isomerization dewaxing conditions, wherein at least a portion of said hydrotreated dimerized pyrolysis effluent middle fraction is converted to a high VI lubricating oil composition.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×