US 12,480,383 B2
Geological carbon sequestration and hydrogen production structure and method based on the spontaneous reaction of water-CO2-active minerals
Xuhai Tang, Hubei (CN); Quansheng Liu, Hubei (CN); Yiwei Liu, Hubei (CN); Lizhi Huang, Hubei (CN); and Yuwen Tong, Hubei (CN)
Assigned to WUHAN UNIVERSITY, Hubei (CN)
Filed by WUHAN UNIVERSITY, Hubei (CN)
Filed on Oct. 3, 2024, as Appl. No. 18/906,158.
Claims priority of application No. 202410245682.6 (CN), filed on Mar. 5, 2024.
Prior Publication US 2025/0283392 A1, Sep. 11, 2025
Int. Cl. E21F 17/16 (2006.01); E21B 41/00 (2006.01)
CPC E21B 41/0064 (2013.01) 7 Claims
OG exemplary drawing
 
1. A geological carbon sequestration and hydrogen production structure, characterized by including comprising
a CO2 injection channel, an H2 collection channel, a geological reaction mineral layer, and a sealing structure;
wherein the geological reaction mineral layer comprises active minerals that serve as both filling material and reaction substrate, an outer layer of the geological reaction mineral layer is enclosed by the sealing structure,
wherein the sealing structure prevents the diffusion of CO2 and hydrogen from inside of the geological reaction mineral layer to outside of the geological reaction mineral layer,
wherein the CO2 injection channel penetrates the sealing structure and extends into the geological reaction mineral layer for injecting CO2 and water for a reaction, hydrogen produced by the reaction escapes from the geological reaction mineral layer due to a density difference with the active minerals and is collected through the H2 collection channel that penetrates the sealing structure,
wherein the active minerals have a capability of carbon sequestration and hydrogen production, and comprises metal oxides that react with CO2 to form carbonates and ferrous ions that react with water to produce hydrogen,
wherein based on a depth of a carbon sequestration and hydrogen production strata, the geological carbon sequestration and hydrogen production structure is divided into shallow geological carbon sequestration and hydrogen production structures, and deep geological carbon sequestration and hydrogen production structures, and
wherein in the shallow geological carbon sequestration and hydrogen production structure, the sealing structure is an artificial confining layer, and the geological reaction mineral layer is an artificial sealing layer, which includes one of an abandoned open-pit mine or an abandoned underground mining tunnel.