US 11,718,522 B2
Black powder catalyst for hydrogen production via bi-reforming
Mohammed A. Albuali, Dammam (SA); Bandar A. Fadhel, Dhahran (SA); Rami Bamagain, Khobar (SA); and Ahmad A. Wedhaya, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jan. 4, 2021, as Appl. No. 17/140,229.
Prior Publication US 2022/0212925 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C01B 3/40 (2006.01); B01J 23/745 (2006.01); B01J 8/02 (2006.01); B01J 6/00 (2006.01); B01J 35/00 (2006.01); B01J 37/08 (2006.01)
CPC C01B 3/40 (2013.01) [B01J 6/001 (2013.01); B01J 8/02 (2013.01); B01J 23/745 (2013.01); B01J 35/002 (2013.01); B01J 37/08 (2013.01); C01B 2203/0238 (2013.01); C01B 2203/1047 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of bi-reforming hydrocarbon, comprising:
collecting a black powder from a natural-gas pipeline system, wherein the black powder formed on an inside surface of a natural gas pipeline that is a steel pipeline in the natural-gas pipeline system, the black powder comprising magnetite and hematite;
disposing a reforming catalyst comprising the black powder in a bi-reformer vessel after heating the black powder, wherein heating the calcined black powder comprises heating the black powder at a temperature of at least 500° C. to remove carbon from the black powder and subjecting the black powder to air calcination at a temperature of at least 775° C. to give the black powder comprising at least 50 weight percent of hematite, wherein the black powder after the heating comprises more hematite than in the black powder as collected from the natural-gas pipeline system; and
reacting hydrocarbon comprising methane with steam and carbon dioxide in the bi-reformer vessel via the reforming catalyst at a temperature in a range of 500° C. to 1100° C. and at a pressure in a range of 1 bar to 28 bar to generate synthesis gas comprising hydrogen and carbon monoxide.