IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v8y2015i6p5800-5827d51207.html
   My bibliography  Save this article

Thermo-Mechanical Simulations of Rock Behavior in Underground Coal Gasification Show Negligible Impact of Temperature-Dependent Parameters on Permeability Changes

Author

Listed:
  • Christopher Otto

    (GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany)

  • Thomas Kempka

    (GFZ German Research Centre for Geosciences, Telegrafenberg, Potsdam 14473, Germany)

Abstract

A coupled thermo-mechanical model has been developed to assess permeability changes in the vicinity of an underground coal gasification (UCG) reactor resulting from excavation and thermo-mechanical effects. Thereto, we consider a stepwise UCG reactor excavation based on a pre-defined coal consumption rate and dynamic thermal boundary conditions. Simulation results demonstrate that thermo-mechanical rock behavior is mainly driven by the thermal expansion coefficient, thermal conductivity, tensile strength and elastic modulus of the surrounding rock. A comparison between temperature-dependent and temperature-independent parameters applied in the simulations indicates notable variations in the distribution of total displacements in the UCG reactor vicinity related to thermal stress, but only negligible differences in permeability changes. Hence, temperature-dependent thermo-mechanical parameters have to be considered in the assessment of near-field UCG impacts only, while far-field models can achieve a higher computational efficiency by using temperature-independent thermo-mechanical parameters. Considering the findings of the present study in the large-scale assessment of potential environmental impacts of underground coal gasification, representative coupled simulations based on complex 3D large-scale models become computationally feasible.

Suggested Citation

  • Christopher Otto & Thomas Kempka, 2015. "Thermo-Mechanical Simulations of Rock Behavior in Underground Coal Gasification Show Negligible Impact of Temperature-Dependent Parameters on Permeability Changes," Energies, MDPI, vol. 8(6), pages 1-28, June.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:5800-5827:d:51207
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/8/6/5800/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/8/6/5800/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Alexander Y. Klimenko, 2009. "Early Ideas in Underground Coal Gasification and Their Evolution," Energies, MDPI, vol. 2(2), pages 1-21, June.
    2. 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.
    3. Budzianowski, Wojciech M., 2012. "Value-added carbon management technologies for low CO2 intensive carbon-based energy vectors," Energy, Elsevier, vol. 41(1), pages 280-297.
    4. Prabu, V. & Jayanti, S., 2011. "Simulation of cavity formation in underground coal gasification using bore hole combustion experiments," Energy, Elsevier, vol. 36(10), pages 5854-5864.
    5. Nakaten, Natalie & Schlüter, Ralph & Azzam, Rafig & Kempka, Thomas, 2014. "Development of a techno-economic model for dynamic calculation of cost of electricity, energy demand and CO2 emissions of an integrated UCG–CCS process," Energy, Elsevier, vol. 66(C), pages 779-790.
    6. Blinderman, M.S. & Saulov, D.N. & Klimenko, A.Y., 2008. "Forward and reverse combustion linking in underground coal gasification," Energy, Elsevier, vol. 33(3), pages 446-454.
    7. Eftekhari, Ali Akbar & Van Der Kooi, Hedzer & Bruining, Hans, 2012. "Exergy analysis of underground coal gasification with simultaneous storage of carbon dioxide," Energy, Elsevier, vol. 45(1), pages 729-745.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Fa-qiang Su & Akihiro Hamanaka & Ken-ichi Itakura & Gota Deguchi & Wenyan Zhang & Hua Nan, 2018. "Evaluation of a Compact Coaxial Underground Coal Gasification System Inside an Artificial Coal Seam," Energies, MDPI, vol. 11(4), pages 1-11, April.
    2. Sheng-Qi Yang & Jin-Zhou Tang & Derek Elsworth, 2021. "Creep Rupture and Permeability Evolution in High Temperature Heat-Treated Sandstone Containing Pre-Existing Twin Flaws," Energies, MDPI, vol. 14(19), pages 1-19, October.
    3. Christopher Otto & Thomas Kempka, 2017. "Prediction of Steam Jacket Dynamics and Water Balances in Underground Coal Gasification," Energies, MDPI, vol. 10(6), pages 1-17, May.
    4. Zhen Dong & Haiyang Yi & Yufeng Zhao & Xinggang Wang & Tingxiang Chu & Junjie Xue & Hanqi Wu & Shanshan Chen & Mengyuan Zhang & Hao Chen, 2022. "Investigation of the Evolution of Stratum Fracture during the Cavity Expansion of Underground Coal Gasification," Energies, MDPI, vol. 15(19), pages 1-15, October.
    5. Krzysztof Skrzypkowski & Krzysztof Zagórski & Anna Zagórska, 2021. "Determination of the Extent of the Rock Destruction Zones around a Gasification Channel on the Basis of Strength Tests of Sandstone and Claystone Samples Heated at High Temperatures up to 1200 °C and ," Energies, MDPI, vol. 14(20), pages 1-27, October.
    6. Natalie Christine Nakaten & Thomas Kempka, 2017. "Techno-Economic Comparison of Onshore and Offshore Underground Coal Gasification End-Product Competitiveness," Energies, MDPI, vol. 10(10), pages 1-27, October.
    7. Sheng-Qi Yang & Bo Hu & Pathegama G. Ranjith & Peng Xu, 2018. "Multi-Step Loading Creep Behavior of Red Sandstone after Thermal Treatments and a Creep Damage Model," Energies, MDPI, vol. 11(1), pages 1-26, January.
    8. Natalie Nakaten & Thomas Kempka, 2019. "Techno-Economic Comparison of Onshore and Offshore Underground Coal Gasification End-Product Competitiveness," Energies, MDPI, vol. 12(17), pages 1-28, August.
    9. Karol Kostúr & Marek Laciak & Milan Durdan, 2018. "Some Influences of Underground Coal Gasification on the Environment," Sustainability, MDPI, vol. 10(5), pages 1-31, May.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Prabu, V. & Geeta, K., 2015. "CO2 enhanced in-situ oxy-coal gasification based carbon-neutral conventional power generating systems," Energy, Elsevier, vol. 84(C), pages 672-683.
    2. Md M. Khan & Joseph P. Mmbaga & Ahad S. Shirazi & Japan Trivedi & Qingzia Liu & Rajender Gupta, 2015. "Modelling Underground Coal Gasification—A Review," Energies, MDPI, vol. 8(11), pages 1-66, November.
    3. Nakaten, Natalie & Schlüter, Ralph & Azzam, Rafig & Kempka, Thomas, 2014. "Development of a techno-economic model for dynamic calculation of cost of electricity, energy demand and CO2 emissions of an integrated UCG–CCS process," Energy, Elsevier, vol. 66(C), pages 779-790.
    4. Natalie Nakaten & Thomas Kempka, 2019. "Techno-Economic Comparison of Onshore and Offshore Underground Coal Gasification End-Product Competitiveness," Energies, MDPI, vol. 12(17), pages 1-28, August.
    5. Xi Lin & Qingya Liu & Zhenyu Liu, 2018. "Estimation of Effective Diffusion Coefficient of O 2 in Ash Layer in Underground Coal Gasification by Thermogravimetric Apparatus," Energies, MDPI, vol. 11(2), pages 1-14, February.
    6. Christopher Otto & Thomas Kempka, 2017. "Prediction of Steam Jacket Dynamics and Water Balances in Underground Coal Gasification," Energies, MDPI, vol. 10(6), pages 1-17, May.
    7. Saulov, Dmitry N. & Plumb, Ovid A. & Klimenko, A.Y., 2010. "Flame propagation in a gasification channel," Energy, Elsevier, vol. 35(3), pages 1264-1273.
    8. Hongtao Liu & Feng Chen & Yuanyuan Wang & Gang Liu & Hong Yao & Shuqin Liu, 2018. "Experimental Study of Reverse Underground Coal Gasification," Energies, MDPI, vol. 11(11), pages 1-13, October.
    9. Fa-qiang Su & Akihiro Hamanaka & Ken-ichi Itakura & Gota Deguchi & Wenyan Zhang & Hua Nan, 2018. "Evaluation of a Compact Coaxial Underground Coal Gasification System Inside an Artificial Coal Seam," Energies, MDPI, vol. 11(4), pages 1-11, April.
    10. 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.
    11. Xin, Lin & An, Mingyu & Feng, Mingze & Li, Kaixuan & Cheng, Weimin & Liu, Weitao & Hu, Xiangming & Wang, Zhigang & Han, Limin, 2021. "Study on pyrolysis characteristics of lump coal in the context of underground coal gasification," Energy, Elsevier, vol. 237(C).
    12. Yuteng Xiao & Jihang Yin & Yifan Hu & Junzhe Wang & Hongsheng Yin & Honggang Qi, 2019. "Monitoring and Control in Underground Coal Gasification: Current Research Status and Future Perspective," Sustainability, MDPI, vol. 11(1), pages 1-14, January.
    13. Prabu, V. & Jayanti, S., 2012. "Underground coal-air gasification based solid oxide fuel cell system," Applied Energy, Elsevier, vol. 94(C), pages 406-414.
    14. Cui, Yong & Liang, Jie & Wang, Zhangqing & Zhang, Xiaochun & Fan, Chenzi & Liang, Dongyu & Wang, Xuan, 2014. "Forward and reverse combustion gasification of coal with production of high-quality syngas in a simulated pilot system for in situ gasification," Applied Energy, Elsevier, vol. 131(C), pages 9-19.
    15. Ján Kačur & Marek Laciak & Milan Durdán & Patrik Flegner & Rebecca Frančáková, 2023. "A Review of Research on Advanced Control Methods for Underground Coal Gasification Processes," Energies, MDPI, vol. 16(8), pages 1-36, April.
    16. Natalie Christine Nakaten & Thomas Kempka, 2017. "Techno-Economic Comparison of Onshore and Offshore Underground Coal Gasification End-Product Competitiveness," Energies, MDPI, vol. 10(10), pages 1-27, October.
    17. Ján Kačur & Marek Laciak & Milan Durdán & Patrik Flegner, 2023. "Investigation of Underground Coal Gasification in Laboratory Conditions: A Review of Recent Research," Energies, MDPI, vol. 16(17), pages 1-55, August.
    18. Olateju, Babatunde & Kumar, Amit, 2013. "Techno-economic assessment of hydrogen production from underground coal gasification (UCG) in Western Canada with carbon capture and sequestration (CCS) for upgrading bitumen from oil sands," Applied Energy, Elsevier, vol. 111(C), pages 428-440.
    19. Bergthorson, Jeffrey M. & Thomson, Murray J., 2015. "A review of the combustion and emissions properties of advanced transportation biofuels and their impact on existing and future engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 1393-1417.
    20. Mari, Carlo, 2014. "Hedging electricity price volatility using nuclear power," Applied Energy, Elsevier, vol. 113(C), pages 615-621.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:8:y:2015:i:6:p:5800-5827:d:51207. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.