US 12,331,253 B2
Integrated hydrocracking and carbon dioxide hydrogenation to produce oxygenated and hydrocarbon fuels
Omer Refa Koseoglu, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Feb. 16, 2022, as Appl. No. 17/672,861.
Prior Publication US 2023/0257665 A1, Aug. 17, 2023
Int. Cl. C10G 45/00 (2006.01); B01J 19/24 (2006.01); C01B 3/24 (2006.01); C07C 29/151 (2006.01)
CPC C10G 45/00 (2013.01) [B01J 19/245 (2013.01); C01B 3/24 (2013.01); C07C 29/1518 (2013.01); B01J 2219/0004 (2013.01); C01B 2203/061 (2013.01); C01B 2203/065 (2013.01); C10G 2300/1003 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A process for producing methanol and hydrocarbon products, the process comprising:
feeding a hydrocarbon feedstock stream comprising methane as a major constituent to a hydrogen production unit comprising at least one furnace;
generating hydrogen gas and carbon dioxide in the hydrogen production unit, wherein the hydrogen production unit is operated at a temperature from 700° C. to 1000° C. and a pressure from 0.3 MPa to 2.5 MPa;
feeding the generated hydrogen gas, a hydroprocessing feedstock stream, and water to a hydrocracking unit;
hydrocracking the hydroprocessing feedstock stream in the hydrocracking unit using the generated hydrogen gas, thereby producing hydrocarbon products, waste carbon dioxide, and waste hydrogen gas,
wherein an amount of the hydroprocessing feedstock stream in the hydrocracking unit is added in excess of the generated hydrogen consumed during the hydrocracking;
feeding the generated carbon dioxide and a mixed gas stream comprising the waste carbon dioxide and waste hydrogen from the hydrocracking unit to a hydrogenation unit; and
contacting the waste hydrogen gas with the generated carbon dioxide and the waste carbon dioxide in the hydrogenation unit, thereby producing methanol and product hydrogen gas,
wherein the hydrogenation unit is operated at a hydrogen to carbon dioxide ratio from 2 mol/mol to 10 mol/mol.