Methods for producing alkylbenzenes, paraffins, olefins and oxo alcohols from waste plastic feedstocks

Abstract

The present invention relates generally to methods for producing detergent compounds from waste plastic feedstocks. More specifically, the invention relates to methods for producing detergent intermediates, including alkylbenzenes, paraffins, olefins, oxo alcohols, and surfactant derivatives thereof from waste plastic feedstock.

What is claimed is: 
     
         1 . A method for producing paraffin from waste plastic feedstock and kerosene and/or another source(s) of hydrocarbons comprising the steps of:
 providing a first feed stream comprising kerosene and/or another source(s) of hydrocarbons;   pre-fractionating the first feed stream to produce a first heart cut paraffin stream comprising paraffins in a heart cut range;   hydrotreating a second feed stream comprising waste plastic feedstock;   combining the first heart cut paraffin stream with the hydrotreated second feed stream to form a combined stream;   hydrotreating the combined stream; and   fractionating the hydrotreated combined stream to remove paraffins that are heavier and/or lighter than the heart cut range to form a second heart cut paraffin stream.   
     
     
         2 . The method according to  claim 1 , wherein the first heart cut paraffin stream comprises C10-C13 hydrocarbons. 
     
     
         3 . A method for producing paraffin from waste plastic feedstock comprising the steps of: providing a feed stream comprising waste plastic feedstock;
 pre-fractionating the feed stream comprising waste plastic feedstock to produce a first heart cut paraffin stream comprising paraffins in a heart cut range;   hydrotreating the first heart cut paraffin stream;   fractionating the hydrotreated feed stream to remove paraffins that are heavier and/or lighter than a heart cut range to form a second heart cut paraffin stream.   
     
     
         4 . The method according to  claim 3 , further comprising the step of separating branched and cyclic hydrocarbons from the second heart cut paraffin stream to form a linear heart cut paraffin stream.