Interaction between Supercritical CO2 and Coal Petrography

Run Chen

doi:10.4028/www.scientific.net/AMR.616-618.306

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 616-618Interaction between Supercritical CO2 and Coal...

Interaction between Supercritical CO₂ and Coal Petrography

Abstract:

CO₂ enhanced CBM recovery(CO₂-ECBM) is an important way for reducing CO₂ emission into atmosphere and enhancing coal-bed methane (CBM) recovery. The interaction between supercritical CO₂ and coal petrography has been investigated since the 1990s. Advances in the interaction between supercritical CO₂ and coal petrography are reviewed in light of certain aspects, such as the competitive multi-component gas adsorption, sorption-induced coal swelling/shrinkage and the fluid-solid coupling between fluids(such as gas, liquid and supercritical fluid) and coal petrography. It is suggested that a comprehensive feasibility demonstration is necessary for a successful application of the technology for CO₂-ECBM. At the same time, it also indicated that there are some questions must be discussed in future, such as the influences on pore structure, coal adsorptivity and permeability of the reaction of ScCO₂-H₂O and rock and small organic matters are extracted by supercritical CO₂.

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Periodical:

Advanced Materials Research (Volumes 616-618)

Pages:

306-309

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.616-618.306

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Online since:

December 2012

Authors:

Run Chen

Keywords:

Adsorption, Coal Petrography, Supercritical CO₂, Supercritical CO₂ Extraction, Swelling/shrinkage, Water-Rock Reaction

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