Volume 41 Issue 6
Oct.  2021
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LI Quanzhong, NI Xiaoming, WANG Yanbin, GAO Shasha. Numerical simulation of coal mineral solubility under CO2 partial pressure[J]. COAL GEOLOGY & EXPLORATION, 2013, 41(6): 19-21,42. DOI: 10.3969/j.issn.1001-1986.2013.06.005
Citation: LI Quanzhong, NI Xiaoming, WANG Yanbin, GAO Shasha. Numerical simulation of coal mineral solubility under CO2 partial pressure[J]. COAL GEOLOGY & EXPLORATION, 2013, 41(6): 19-21,42. DOI: 10.3969/j.issn.1001-1986.2013.06.005
shu

Numerical simulation of coal mineral solubility under CO2 partial pressure

  • 1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;

  • 2. State Key Laboratory for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China;

  • 3. College of Geoscience and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China

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  • Received Date: October 23, 2012
  • Available Online: October 22, 2021
    Graphical Abstract
    • Abstract
  • Identification of the variation regularities of solubility of coal minerals under different temperature and CO2 partial pressure can provide an important basis for the analysis of coal reservoir permeability during CO2 injection. With the hydrogeochemistry software-PHREEQC, hydrochemical simulation was conducted for the solubility of coal minerals under the different temperature and CO2 partial pressure conditions, the variation of coal mineral solubility under different temperature and CO2 partial pressure was obtained. The results showed that when there was no CO2 partial pressure, the solubility of the minerals increased with the rise of temperature, when CO2 partial pressure of the solution increased to certain extent, the solubility of the minerals except for quartz decreased with the rise of temperature, at the same temperature and with the increase of CO2 partial pressure, the solubility of all minerals except for quartz increased, the solubility of calcite showed rapid increase with the increase of CO2 partial pressure, but other minerals showed slow increase in solubility.
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