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

Patent metadata

Field	Value
Publication number	US-12258539-B2
Application number	US-202017080872-A
Country	US
Kind code	B2
Filing date	Oct 27, 2020
Priority date	Aug 10, 2015
Publication date	Mar 25, 2025
Grant date	Mar 25, 2025

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.

First claim

What is claimed is:

1. A method for producing olefin 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 by separating and removing both a light hydrocarbon stream comprising C 8 and lighter hydrocarbons, and a heavier hydrocarbon stream, from hydrocarbons that are selected for further processing, thereby producing a first heart cut paraffin stream comprising C 10 -C 18 hydrocarbons;
hydrotreating a second feed stream comprising waste plastic feedstock comprising C 10 -C 18 hydrocarbons;
combining the first heart cut paraffin stream with the second feed stream to form a combined stream;
hydrotreating the combined stream;
fractionating the hydrotreated stream to remove paraffins that are heavier and/or lighter than the heart cut range to form a second heart cut paraffin stream;
dehydrogenating the second heart cut paraffin stream to form a stream comprising olefins;
purifying the stream comprising the olefins;
alkylating the stream comprising the olefins with benzene to produce an alkylbenzene; and
sulfonating the alkylbenzene to form an alkylbenzene sulfonate surfactant.

2. The method according to claim 1 , further comprising the step of separating branched and cyclic hydrocarbons from the second heart cut paraffin stream before the step of dehydrogenating to form a linear heart cut paraffin stream, wherein the product olefin is linear.

3. The method according to claim 1 , further comprising the step of hydroformylating the olefin to produce an oxo alcohol.

4. The method according to claim 3 , further comprising the step of ethoxylating and/or sulfating said oxo alcohol to produce a surfactant.

5. The method according to claim 1 , wherein the first heart cut paraffin stream comprises C 10 -C 13 hydrocarbons.

6. The method according to claim 4 , wherein the method includes the step of ethoxylating said oxo alcohol to produce a surfactant.

7. The method according to claim 4 , wherein the method includes the step of sulfating said oxo alcohol to produce a surfactant.

8. The method according to claim 4 , wherein the method includes the step of ethoxylating and sulfating said oxo alcohol to produce a surfactant.

Assignees

• Procter & Gamble

Inventors

• Scheibel Jeffrey John
• Vinson Phillip Kyle
• Cron Scott Leroy
• Williams Thomas Earl

Classifications

• C11D1/29

  Sulfates of polyoxyalkylene ethers · CPC title

• C11D1/146

  Sulfuric acid esters · CPC title

• C10G2400/00

  Products obtained by processes covered by groups C10G9/00 - C10G69/14 · CPC title

• C10G2300/1003

  Waste materials · CPC title

• C07C303/02

  of sulfonic acids or halides thereof · CPC title