| US 7,550,635 B2 | ||
| Process for the preparation hydrogen and a mixture of hydrogen and carbon monoxide | ||
| Thian Hoey Tio, Amsterdam (Netherlands) | ||
| Assigned to Shell Oil Company, Houston, Tex. (US) | ||
| Appl. No. 10/552,854 PCT Filed Apr. 13, 2004, PCT No. PCT/EP2004/050500 § 371(c)(1), (2), (4) Date Oct. 12, 2005, PCT Pub. No. WO2004/092061, PCT Pub. Date Oct. 28, 2004. |
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| Claims priority of application No. 03076114 (EP), filed on Apr. 15, 2003. | ||
| Prior Publication US 2007/0140954 A1, Jun. 21, 2007 | ||
| Int. Cl. C01B 3/24 (2006.01); C01B 3/26 (2006.01); C07C 5/02 (2006.01); C07C 5/22 (2006.01); C07C 27/06 (2006.01) | ||
| U.S. Cl. 585—250 [423/650; 423/651; 423/652; 423/653; 423/654; 518/703; 518/704; 585/253] | 11 Claims |
| 1. A process for the preparation of hydrogen and a gas containing a mixture of hydrogen and carbon monoxide from methane,
said process comprising:
(a) partially oxidizing methane via a non-catalyzed reaction to prepare an effluent comprising a mixture of hydrogen and carbon
monoxide having a temperature of above 700° C.,
(b) catalytically steam reforming methane in a zone wherein the feed has a steam to carbon ratio of less than 1 to prepare
a steam reforming product having a hydrogen to carbon monoxide molar ratio of greater than 2, wherein heat for the steam reforming
reaction is provided by convective heat exchange between the steam reformer reactor zone and the effluent of step (a), and
(c) separating hydrogen from part of the steam reforming product of step (b) and feeding part of the steam reforming product
of step (b) to step (a).
|