Sulfone cracking using supercritical water

Patent metadata

Field	Value
Publication number	US-2016272900-A1
Application number	US-201615148033-A
Country	US
Kind code	A1
Filing date	May 6, 2016
Priority date	Apr 27, 2011
Publication date	Sep 22, 2016
Grant date	—

Abstract

The invention relates to a process for removing sulfur compounds from a hydrocarbon stream. The hydrocarbon stream is contacted with water, at supercritical conditions and also subjects an effluent hydrocarbon stream to separation techniques. The resulting hydrocarbon stream is substantially free of sulfur oxides, sulfoxides, and sulfones.

First claim

1 . A process to convert and separate from a hydrocarbon stream containing oxides of sulphur, sulfones and sulfoxides into their salt derivatives and SO x , wherein x is 2 or 3, from the hydrocarbon stream obtained from oxidative desulfurization, which comprises the steps of:
a) contacting the hydrocarbon stream with water in a reactor at supercritical water conditions in a reaction zone; and, b) subjecting an effluent hydrocarbon stream to a vapor/liquid/liquid separation whereby a hydrocarbon fraction substantially free of oxides of sulphur, sulfoxides, sulfones and water containing salts and derivative of oxides of sulfur is obtained.

2 . (canceled)

3 . (canceled)

4 . The process of claim 1 wherein a molybdenum catalyst is employed.

5 . The process of claim 1 , wherein the reaction is conducted in a basic medium.

6 . The process of claim 5 , wherein the reaction is conducted in the presence of fluoride ions.

7 . The process of claim 6 , wherein the fluoride ions are obtained from alkali metal compounds in Group IA of the Periodic Table.

8 . The process of claim 1 , wherein the process is carried out in an acidic medium.

9 . The process of claim 8 , wherein the process is carried out in a liquid or solid acidic medium.

10 . The process of claim 9 , wherein the process is carried out in the presence of formic acid.

11 . The process of claim 1 , wherein the sulfones, sulfoxides, and oxides of sulfur, have a boiling point in the range of about 180° C. to about 1500° C.

12 . The process of claim 1 , wherein the residence time is about 1 minute to about 600 minutes.

13 . The process of claim 12 , wherein the residence time is about 5 minutes to about 120 minutes.

14 . The process of claim 13 , wherein the residence time is about 10 minutes to about 60 minutes.

15 . The process of claim 1 , wherein the oil/water volume ratio is 1:5.

16 . The process of claim 15 , wherein the oil/water volume ratio is 1:2.

17 . The process of claim 16 , wherein the oil/water volume ratio is 1:1.

18 . The process of claim 1 , wherein the process is carried-out in a reactor selected from the group consisting of a batch, fixed-bed, ebullated-bed, moving-bed and slurry-bed reactors.

19 . The process of claim 1 , wherein the sulfones and sulfoxides are obtained from whole crude oils, synthetic crude oils, bitumen, oil shale, coal liquids or their refined intermediates and/or final products including coker, FCC and hydroprocessed fractions.

20 . The process of claim 14 , wherein the catalyst is supported on a material selected from the group consisting of silica-alumina, alumina, natural or synthetic zeolites and activated carbon.

21 . The process of claim 18 , wherein when more than one reactor is employed, the reactors are arranged in series or parallel and the reactors contain different types of catalysts.

Assignees

• Koseoglu Omer Refa
• Al-Shahrani Farhan M
• Bourane Abdennour
• Saudi Arabian Oil Co

Inventors

• Koseoglu Omer Refa
• Al-Shahrani Farhan M
• Bourane Abdennour

Classifications

• C10G31/08

  by treating with water · CPC title

• C10G53/10

  including at least one acid-treatment step · CPC title

• C10G53/12 Primary

  including at least one alkaline treatment step · CPC title

• C10G19/02

  with aqueous alkaline solutions · CPC title

• C10G17/02

  with acids or acid-containing liquids, e.g. acid sludge · CPC title