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Experimental investigation of alterations in coal fracture network induced by thermal treatment: Implications for CO2 geo-sequestration

Author

Listed:
  • Salmachi, Alireza
  • Zeinijahromi, Abbas
  • Parker, Harrison Michael
  • Abdulhussein, Ahmad
  • Badalyan, Alexander
  • Kwong, Philip
  • Al-Afnan, Saad Fahaid Khalaf
  • Raza, Arshad
  • Yaseri, Ahmed Zarzor Hussien
  • Mahmoud, Mohamed
  • Ghasemi, Mohadese
  • Rajabi, Mojtaba

Abstract

Hydrogen-rich syngas, produced by underground coal gasification (UCG) process, is a valuable feedstock for chemical industry. However, it can contain large quantities of carbon dioxide (CO2), which requires separation and sequestration to reduce the carbon footprint of the process. This study explores mechanisms influencing coal permeability when CO2 is injected back into the coal through existing gasification chambers. Two main mechanisms affecting permeability are thermal effects associated with underground coal gasification and CO2-related coal matrix swelling.

Suggested Citation

  • Salmachi, Alireza & Zeinijahromi, Abbas & Parker, Harrison Michael & Abdulhussein, Ahmad & Badalyan, Alexander & Kwong, Philip & Al-Afnan, Saad Fahaid Khalaf & Raza, Arshad & Yaseri, Ahmed Zarzor Huss, 2024. "Experimental investigation of alterations in coal fracture network induced by thermal treatment: Implications for CO2 geo-sequestration," Energy, Elsevier, vol. 308(C).
    • Handle: RePEc:eee:energy:v:308:y:2024:i:c:s0360544224026677
    DOI: 10.1016/j.energy.2024.132893
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    References listed on IDEAS

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    1. Faqiang Su & Takuya Nakanowataru & Ken-ichi Itakura & Koutarou Ohga & Gota Deguchi, 2013. "Evaluation of Structural Changes in the Coal Specimen Heating Process and UCG Model Experiments for Developing Efficient UCG Systems," Energies, MDPI, vol. 6(5), pages 1-21, May.
    2. Shi, Qingmin & Cui, Shidong & Wang, Shuangming & Mi, Yichen & Sun, Qiang & Wang, Shengquan & Shi, Chenyu & Yu, Jizhou, 2022. "Experiment study on CO2 adsorption performance of thermal treated coal: Inspiration for CO2 storage after underground coal thermal treatment," Energy, Elsevier, vol. 254(PA).
    3. Alireza Salmachi & Mojtaba Rajabi & Carmine Wainman & Steven Mackie & Peter McCabe & Bronwyn Camac & Christopher Clarkson, 2021. "History, Geology, In Situ Stress Pattern, Gas Content and Permeability of Coal Seam Gas Basins in Australia: A Review," Energies, MDPI, vol. 14(9), pages 1-37, May.
    4. Wang, Hao & Wang, Liang & Zheng, Siwen & Sun, Yiwei & Shen, Shangkun & Zhang, Xiaolei, 2024. "Research on coal matrix pore structure evolution and adsorption behavior characteristics under different thermal stimulation," Energy, Elsevier, vol. 287(C).
    5. Sun, Lulu & Zhang, Chen & Wang, Gang & Huang, Qiming & Shi, Quanlin, 2022. "Research on the evolution of pore and fracture structures during spontaneous combustion of coal based on CT 3D reconstruction," Energy, Elsevier, vol. 260(C).
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