US 7,291,257 B2 · Two phase hydroprocessing

Abstract

A process where the need to circulate hydrogen through the catalyst is eliminated is provided. This is accomplished by mixing and/or flashing the hydrogen and the oil to be treated in the presence of a solvent or diluent in which the hydrogen solubility is “high” relative to the feed. The type and amount of diluent added, as well as the reactor conditions, can be set so that all of the hydrogen required in the hydroprocessing reactions may be available in solution. The oil/diluent/hydrogen solution can then be fed to a plug flow reactor packed with catalyst where the oil and hydrogen react. No additional hydrogen is required, therefore, hydrogen recirculation is avoided and trickle bed operation of the reactors is avoided. Therefore, the large trickle bed reactors can be replaced by much smaller tubular reactor.

Claims18

Dependent claims

A hydroprocessing method comprising:

combining hydrogen and feed to be treated in the presence of a solvent or diluent wherein the percentage of hydrogen in solution is greater than the percentage of hydrogen in the feed to form a hydrogen-containing liquid mixture, and then contacting the liquid mixture with a catalyst in a reactor which contains about 10% or less of hydrogen gas by total volume of the reactor to at least one of remove contaminants, saturate aromatics or molecular weight reduction.

Dependencies are inferred from the claim text.

Facts

Application

11/007,846Filed 9 Dec 2004 · continuation in part

Priority

24 Jun 1997

Published

US 2005/0082202 A121 Apr 2005

Granted

6 Nov 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

C10G 45/22
To eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons;…: with…
C10G 47/00
Cracking of hydrocarbon oils, in the presence of hydrogen or hydrogen- generating
C10G 65/08
Including only refining steps: at least one step being a hydrogenation of the aromatic hydrocarbons
C10G
Cracking hydrocarbon oils

Family

Application60/050,599Us provisional application · filed 24 Jun 1997

Application09/104,079Parent of this continuation · filed 24 Jun 1998

Application09/599,913Parent of this continuation · filed 22 Jun 2000

Application10/162,310Parent of this continuation-in-part · filed 3 Jun 2002

US 2005/0082202 A1Pre-grant publication · published 21 Apr 2005

US 6,881,326 B2Parent of this continuation-in-part

US 6,428,686 B1Parent of this continuation

Application10/162,310Parent of this continuation

US 6,123,835 AParent of this continuation

US 2002/0148755 A1Published application

US 7,291,257 B2This patent

From the US filing history. Foreign family members aren’t listed.

Two phase hydroprocessing

Life of this patent

Two phase hydroprocessing

Life of this patent

Abstract

Claims18