Method for producing a syngas stream

Patent metadata

Field	Value
Publication number	US-10125018-B2
Application number	US-201515324123-A
Country	US
Kind code	B2
Filing date	Jul 6, 2015
Priority date	Jul 8, 2014
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

The present invention provides a method for producing a syngas stream, the method at least comprising the steps of: (a) providing a hydrocarbon-containing stream; (b) providing a reactor containing a heated mass of solids at a temperature of at least 1000° C.; (c) cracking the hydrocarbon-containing stream provided in step (a) in the reactor containing the heated mass of solids provided in step (b), thereby at least obtaining C and H2; (d) removing an H2-containing stream from the reactor; (e) converting the C obtained in step (c) in the reactor at an H2O/CO2 vol. % feed ratio of greater than zero, thereby obtaining a CO/H2-containing stream; (f) removing the CO/H2-containing stream from the reactor; (g) combining the H2-containing stream removed in step (d) with the CO/H2-containing stream removed in step (f) thereby obtaining a syngas stream.

First claim

That which is claimed is:

1. A method for producing a syngas stream, the method at least comprising the steps of:
(a) providing a hydrocarbon-containing stream;
(b) providing a reactor containing a heated mass of solids at a temperature of at least 1000° C.;
(c) cracking the hydrocarbon-containing stream provided in step (a) in the reactor containing the heated mass of solids provided in step (b), thereby at least obtaining C and H 2 ;
(d) removing an H 2 -containing stream from the reactor;
(e) converting the C obtained in step (c) in the reactor by feeding a CO 2 -containing stream and steam to the reactor at an H 2 O/CO 2 vol. % feed ratio of greater than 0.0001, thereby obtaining a CO/H 2 -containing stream;
(f) removing the CO/H 2 -containing stream from the reactor;
(g) combining the H 2 -containing stream removed in step (d) with the CO/H 2 -containing stream removed in step (f) thereby obtaining a syngas stream having a H 2 /CO vol. % ratio of at least 1.0 and below 3.1.

2. The method according to claim 1 , wherein the hydrocarbon-containing stream provided in step (a) comprises at least 10 ppm mercaptans.

3. The method according to claim 1 , wherein the hydrocarbon-containing stream provided in step (a) comprises at least 1.0 vol. % olefins.

4. The method according to claim 1 , wherein the reactor containing the heated mass of solids is in step (c) at a temperature of at least 1100° C.

5. The method according to claim 1 , wherein the H 2 -containing stream removed from the reactor in step (d) comprises at least 1 ppm H 2 S, which is at least partially removed before combining in step (g).

6. The method according to claim 1 , wherein a part of the H 2 -containing stream removed from the reactor in step (d) is used to heat the reactor.

7. The method according to claim 1 , wherein the reactor containing the heated mass of solids is in step (e) at a temperature of at least 1000° C.

8. The method according to claim 1 , wherein in step (e) the C obtained in step (c) is converted in the reactor at an H 2 O/CO 2 vol. % feed ratio of at least 0.9 and at most 1000.

9. The method according to claim 1 , wherein the syngas stream obtained in step (g) has a H 2 /CO vol. % ratio of at least 1.75 and at most 2.2.

Assignees

• Shell Oil Co

Inventors

• Schoonebeek Ronald Jan
• Bos Alouisius Nicolaas Renée

Classifications

• C01B2203/0272

  containing a non-catalytic decomposition step · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• C10J2300/1618

  Modification of synthesis gas composition, e.g. to meet some criteria · CPC title

• C10J2300/094

  Char · CPC title

• C01B2203/1235

  Hydrocarbons · CPC title