Slurry oil upgrading while preserving aromatic content

Patent metadata

Field	Value
Publication number	US-9375656-B2
Application number	US-201414308802-A
Country	US
Kind code	B2
Filing date	Jun 19, 2014
Priority date	Jan 9, 2009
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

Methods relating to methods for producing a needle coke precursor from slurry oil having low levels of nitrogen and sulfur. Nitrogen-containing compounds are removed by chromatography, followed by hydrotreating at relatively mild conditions that focus on the more easily-removed sulfur-containing compounds while largely preserving aromatic content of the slurry oil. The resulting needle coke precursor can be converted to a premium needle coke in a delayed coking system.

First claim

The invention claimed is:

1. A process for producing needle coke from slurry oil, comprising:
a) providing a slurry oil comprising aromatic compounds, nitrogen containing compounds and sulfur-containing compounds;
b) contacting the slurry oil with a chromatography substrate that retains at least a portion of the nitrogen-containing compounds, thereby producing an upgraded slurry oil;
c) hydrotreating the upgraded slurry oil at a pressure in the range from 1 to 350 psig with a…

Assignees

• Phillips 66 Co

Inventors

• Subbiah Ayyappan
• Choudhary Tushar V

Classifications

• B01J20/103

  Operations & Transport · mapped topic

• C10B55/00

  Chemistry & Metallurgy · mapped topic

• B01J20/3433

  Operations & Transport · mapped topic

• C10G25/003

  Chemistry & Metallurgy · mapped topic

• C10B57/045

  Chemistry & Metallurgy · mapped topic