Conversion of asphaltenic pitch within an ebullated bed residuum hydrocracking process

Patent metadata

Field	Value
Publication number	US-9028674-B2
Application number	US-201313743936-A
Country	US
Kind code	B2
Filing date	Jan 17, 2013
Priority date	Jan 17, 2013
Publication date	May 12, 2015
Grant date	May 12, 2015

Abstract

A process for upgrading residuum hydrocarbons including: feeding pitch, hydrogen, and a partially spent catalyst recovered from a hydrocracking reactor to an ebullated bed pitch hydrocracking reactor; contacting the pitch, hydrogen, and the catalyst in the ebullated bed pitch hydrocracking reactor at reaction conditions of temperature and pressure sufficient to convert at least a portion of the pitch to distillate hydrocarbons; and separating the distillate hydrocarbons from the catalyst. In some embodiments, the process may include selecting the ebullated bed pitch hydrocracking reactor reaction conditions to be at or below the level where sediment formation would otherwise become excessive and prevent continuity of operations.

First claim

What is claimed:

1. A process for upgrading pitch, the process comprising:
hydrocracking a heavy oil feedstock in a hydrocracking reaction system comprising one or more hydrocracking reaction stages comprising an ebullated bed hydrocracking reactor;
recovering a partially spent catalyst from the ebullated bed hydrocracking reactor;
grinding the recovered partially spent catalyst;
feeding pitch, hydrogen, and the ground partially spent catalyst to an ebullated bed pitch hydro…

Assignees

• Lummus Technology Inc

Inventors

• Mukherjee Ujjal K
• Baldassari Mario C
• Greene Marvin I

Classifications

• C10G47/26 Primary

  Chemistry & Metallurgy · mapped topic

• C10G1/086

  Chemistry & Metallurgy · mapped topic

• C10G65/10

  Chemistry & Metallurgy · mapped topic

• C10G2300/701

  Chemistry & Metallurgy · mapped topic

• C10G47/00

  Chemistry & Metallurgy · mapped topic