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Prediction and parametric analysis of cavity growth for the underground coal gasification project Thar

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  • Javed, Syed Bilal
  • Uppal, Ali Arshad
  • Bhatti, Aamer Iqbal
  • Samar, Raza

Abstract

Underground coal gasification (UCG) is a promising clean coal technology to convert unmineable and deep coal reserves into syngas, which can be used in many industrial applications. In UCG field, real time monitoring of hydrological and geological conditions such as water influx rate, cavity growth and its interaction with overburden is a formidable task. UCG project Thar (UPT) lacks real time data acquisition system to monitor these parameters. In this work, a 3D axisymmetric cavity simulation model (CAVSIM) is parameterized with operating conditions of UPT and properties of Lignite B coal of Thar coal fields. For model validation, a comparison has been made between simulated and the UPT field data for the composition and heating value of syngas. The results of CAVSIM are also compared with our previous ID packed bed model, which show the superiority of CAVSIM model. Moreover, a comprehensive simulation study has been carried out to predict the cavity growth and its interaction with overburden. The effect of operating parameters of UPT on volumetric cavity growth and heating value of syngas are also investigated.

Suggested Citation

  • Javed, Syed Bilal & Uppal, Ali Arshad & Bhatti, Aamer Iqbal & Samar, Raza, 2019. "Prediction and parametric analysis of cavity growth for the underground coal gasification project Thar," Energy, Elsevier, vol. 172(C), pages 1277-1290.
    • Handle: RePEc:eee:energy:v:172:y:2019:i:c:p:1277-1290
    DOI: 10.1016/j.energy.2019.02.005
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    1. Javed, Syed Bilal & Uppal, Ali Arshad & Samar, Raza & Bhatti, Aamer Iqbal, 2021. "Design and implementation of multi-variable H∞ robust control for the underground coal gasification project Thar," Energy, Elsevier, vol. 216(C).
    2. Afaq Ahmed & Syed Bilal Javed & Ali Arshad Uppal & Jamshed Iqbal, 2023. "Development of CAVLAB—A Control-Oriented MATLAB Based Simulator for an Underground Coal Gasification Process," Mathematics, MDPI, vol. 11(11), pages 1-26, May.
    3. Huijun Fang & Yuewu Liu & Tengze Ge & Taiyi Zheng & Yueyu Yu & Danlu Liu & Jiuge Ding & Longlong Li, 2022. "A Review of Research on Cavity Growth in the Context of Underground Coal Gasification," Energies, MDPI, vol. 15(23), pages 1-21, December.
    4. Su, Fa-qiang & Wu, Jun-bo & Tao-Zhang, & Deng, Qi-chao & Yu, Yi-he & Hamanaka, Akihiro & Dai, Meng-Jia & Yang, Jun-Nan & He, Xiao-long, 2023. "Study on the monitoring method of cavity growth in underground coal gasification under laboratory conditions," Energy, Elsevier, vol. 263(PE).

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