Changes in Physicochemical Properties of Coal and Their Mechanism Due to Supercritical CO2–H2O Treatment
Run Chen,
Yajun Zhang,
Kunpeng Hu
et al.
Abstract:The dissolution of supercritical carbon dioxide (ScCO2) in water forms a ScCO2–H2O system, which exerts a transformative influence on the physicochemical characteristics of coal and significantly impacts the CO2-driven enhanced coalbed methane (CO2-ECBM) recovery process. Herein, the effect of ScCO2–H2O treatment on the physicochemical properties of coal was simulated in a high-pressure reactor. The migration of major elements, change in the pore structure, and change in the CH4 adsorption capacity of coal aft… Show more
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