IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v203y2020ics0360544220309452.html
   My bibliography  Save this article

Experimental study on the evolutional trend of pore structures and fractal dimension of low-rank coal rich clay subjected to a coupled thermo-hydro-mechanical-chemical environment

Author

Listed:
  • Tao, Meng
  • Jl, Xie
  • Xm, Li
  • Jw, Ma
  • Yang, Yue

Abstract

In order to study the thermo-hydro-mechanical-chemical (THMC) behaviors of low-rank coal rich clay (LRCRC), a triaxial testing machine with THMC effects of high pressure and high temperature was built. Then, mercury injection tests, fractal dimension analysis and infrared spectroscopy analysis were carried out on LRCRC specimens subjected to a coupled THMC environment. The results showed that: 1) as the temperature increased, the sub-micro pores gradually transformed into other types of pores. Moreover, the formation rate of new pores during pyrolysis was slower than the expansion rate of existing pores; 2) the overall meso-physical parameters and fractal dimension of specimen decreased first and then increased with the increase in temperature; 3) at a given temperature, for sub-micropores (0–10 nm), the reduction rate of microscopic physical parameters and pore size distribution ratio of specimen under superheated steam was less than that under nitrogen atmosphere. For the other pores (>10 nm), the growth rate of microscopic physical parameters and pore size distribution ratio of specimen under superheated steam was greater than that under nitrogen atmosphere. Compared with nitrogen, water vapor was more favorable for pyrolysis of specimen; 4) at a given temperature, the structural parameters (Car/(Car + CO), Car/Hal) of pyrolysis residues of specimen under superheated steam atmosphere were larger than those under nitrogen atmosphere, indicating that the amount of decomposition of aliphatic hydrocarbons and oxygen-containing functional groups was greater than that under nitrogen atmosphere. The research results in this paper can provide useful theoretical guidance and technical support for mining of low-rank clay rich coal.

Suggested Citation

  • Tao, Meng & Jl, Xie & Xm, Li & Jw, Ma & Yang, Yue, 2020. "Experimental study on the evolutional trend of pore structures and fractal dimension of low-rank coal rich clay subjected to a coupled thermo-hydro-mechanical-chemical environment," Energy, Elsevier, vol. 203(C).
    • Handle: RePEc:eee:energy:v:203:y:2020:i:c:s0360544220309452
    DOI: 10.1016/j.energy.2020.117838
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544220309452
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2020.117838?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Li, Y. & Chen, M.Q. & Li, Q.H. & Huang, Y.W., 2018. "Effect of microwave pretreatment on the combustion behavior of lignite/solid waste briquettes," Energy, Elsevier, vol. 149(C), pages 730-740.
    2. Feng, Gan & Kang, Yong & Sun, Ze-dong & Wang, Xiao-chuan & Hu, Yao-qing, 2019. "Effects of supercritical CO2 adsorption on the mechanical characteristics and failure mechanisms of shale," Energy, Elsevier, vol. 173(C), pages 870-882.
    3. Liu, Wei & Zhang, Zhixin & Chen, Jie & Fan, Jinyang & Jiang, Deyi & Jjk, Daemen & Li, Yinping, 2019. "Physical simulation of construction and control of two butted-well horizontal cavern energy storage using large molded rock salt specimens," Energy, Elsevier, vol. 185(C), pages 682-694.
    4. Yu, Min & Diallo, Thierno M.O. & Zhao, Xudong & Zhou, Jinzhi & Du, Zhenyu & Ji, Jie & Cheng, Yuanda, 2018. "Analytical study of impact of the wick’s fractal parameters on the heat transfer capacity of a novel micro-channel loop heat pipe," Energy, Elsevier, vol. 158(C), pages 746-759.
    5. Ahmed, I.I. & Gupta, A.K., 2013. "Experiments and stochastic simulations of lignite coal during pyrolysis and gasification," Applied Energy, Elsevier, vol. 102(C), pages 355-363.
    6. Liu, Peng & Zhang, Dexiang & Wang, Lanlan & Zhou, Yang & Pan, Tieying & Lu, Xilan, 2016. "The structure and pyrolysis product distribution of lignite from different sedimentary environment," Applied Energy, Elsevier, vol. 163(C), pages 254-262.
    7. Fan, Jinyang & Xie, Heping & Chen, Jie & Jiang, Deyi & Li, Cunbao & Ngaha Tiedeu, William & Ambre, Julien, 2020. "Preliminary feasibility analysis of a hybrid pumped-hydro energy storage system using abandoned coal mine goafs," Applied Energy, Elsevier, vol. 258(C).
    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. Yongzan, Wen & Guanhua, Ni & Xinyue, Zhang & Yicheng, Zheng & Gang, Wang & Zhenyang, Wang & Qiming, Huang, 2023. "Fine characterization of pore structure of acidified anthracite based on liquid intrusion method and Micro-CT," Energy, Elsevier, vol. 263(PA).
    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. Wang, Ziwei & Qin, Yong & Shen, Jian & Li, Teng & Zhang, Xiaoyang & Cai, Ying, 2022. "A novel permeability prediction model for coal based on dynamic transformation of pores in multiple scales," Energy, Elsevier, vol. 257(C).
    4. Wang, Kai & Dong, Huzi & Wang, Long & Zhao, Wei & Wang, Yanhai & Guo, Haijun & Zang, Jie & Fan, Long & Zhang, Xiaolei, 2023. "Temperature-induced micropore structure alteration of raw coal and its implications for optimizing the degassing temperature in pore characterization," Energy, Elsevier, vol. 268(C).
    5. Shi, Jianhang & Feng, Zengchao & Zhou, Dong & Li, Xuecheng & Meng, Qiaorong, 2023. "Analysis of the permeability evolution law of in situ steam pyrolysis of bituminous coal combing with in situ CT technology," Energy, Elsevier, vol. 263(PD).
    6. Liu, Hao & Li, Zenghua & Yang, Yongliang & Miao, Guodong & Han, Yaozhong, 2023. "Effects of oxidation on physical and chemical structure of a low rank sub-bituminous coal during the spontaneous combustion latency," Energy, Elsevier, vol. 272(C).

    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. Zhang, Xiong & Liu, Wei & Jiang, Deyi & Qiao, Weibiao & Liu, Enbin & Zhang, Nan & Fan, Jinyang, 2021. "Investigation on the influences of interlayer contents on stability and usability of energy storage caverns in bedded rock salt," Energy, Elsevier, vol. 231(C).
    2. Li, Jinlong & Shi, Xilin & Zhang, Shuai, 2020. "Construction modeling and parameter optimization of multi-step horizontal energy storage salt caverns," Energy, Elsevier, vol. 203(C).
    3. Nan Zhang & Wei Liu & Yun Zhang & Pengfei Shan & Xilin Shi, 2020. "Microscopic Pore Structure of Surrounding Rock for Underground Strategic Petroleum Reserve (SPR) Caverns in Bedded Rock Salt," Energies, MDPI, vol. 13(7), pages 1-22, March.
    4. Liu, Wei & Zhang, Zhixin & Chen, Jie & Jiang, Deyi & Wu, Fei & Fan, Jinyang & Li, Yinping, 2020. "Feasibility evaluation of large-scale underground hydrogen storage in bedded salt rocks of China: A case study in Jiangsu province," Energy, Elsevier, vol. 198(C).
    5. Xu, Shisen & Ren, Yongqiang & Wang, Baomin & Xu, Yue & Chen, Liang & Wang, Xiaolong & Xiao, Tiancun, 2014. "Development of a novel 2-stage entrained flow coal dry powder gasifier," Applied Energy, Elsevier, vol. 113(C), pages 318-323.
    6. Jianfa Wu & Yintong Guo & Haoyong Huang & Guokai Zhao & Qiyong Gou & Junchuan Gui & Ersi Xu, 2023. "Effect of Hydration under High Temperature and Pressure on the Stress Thresholds of Shale," Energies, MDPI, vol. 16(23), pages 1-13, November.
    7. An, Qiyi & Zhang, Qingsong & Li, Xianghui & Yu, Hao & Yin, Zhanchao & Zhang, Xiao, 2022. "Accounting for dynamic alteration effect of SC-CO2 to assess role of pore structure on rock strength: A comparative study," Energy, Elsevier, vol. 260(C).
    8. Ding, Lu & Dai, Zhenghua & Guo, Qinghua & Yu, Guangsuo, 2017. "Effects of in-situ interactions between steam and coal on pyrolysis and gasification characteristics of pulverized coals and coal water slurry," Applied Energy, Elsevier, vol. 187(C), pages 627-639.
    9. Iwona Bąk & Anna Spoz & Magdalena Zioło & Marek Dylewski, 2021. "Dynamic Analysis of the Similarity of Objects in Research on the Use of Renewable Energy Resources in European Union Countries," Energies, MDPI, vol. 14(13), pages 1-24, July.
    10. Zhou, Junping & Tian, Shifeng & Zhou, Lei & Xian, Xuefu & Yang, Kang & Jiang, Yongdong & Zhang, Chengpeng & Guo, Yaowen, 2020. "Experimental investigation on the influence of sub- and super-critical CO2 saturation time on the permeability of fractured shale," Energy, Elsevier, vol. 191(C).
    11. Xiang Gou & Qiyan Zhang & Yamei Li & Yingfan Liu & Shian Liu & Saima Iram, 2018. "Experimental Research on the Thermal Performance and Semi-Visualization of Rectangular Flat Micro-Grooved Gravity Heat Pipes," Energies, MDPI, vol. 11(9), pages 1-12, September.
    12. Zheng, Senlin & Qiu, Zining & He, Caiwei & Wang, Xianling & Wang, Xupeng & Wang, Zhangyuan & Zhao, Xudong & Shittu, Samson, 2022. "Research on heat transfer mechanism and performance of a novel adaptive enclosure structure based on micro-channel heat pipe," Energy, Elsevier, vol. 254(PB).
    13. Kamila Gawel & Maksym Lozovyi & Mohammad Hossain Bhuiyan & Ruben Bjørge & Erling Fjær, 2021. "Acid Treatment as a Way to Reduce Shale Rock Mechanical Strength and to Create a Material Prone to the Formation of Permanent Well Barrier," Energies, MDPI, vol. 14(9), pages 1-14, April.
    14. Lan, Wenjian & Wang, Hanxiang & Zhang, Xin & Fan, Hongbo & Feng, Kun & Liu, Yanxin & Sun, Bingyu, 2020. "Investigation on the mechanism of micro-cracks generated by microwave heating in coal and rock," Energy, Elsevier, vol. 206(C).
    15. Qin, Chao & Jiang, Yongdong & Luo, Yahuang & Zhou, Junping & Liu, Hao & Song, Xiao & Li, Dong & Zhou, Feng & Xie, Yingliang, 2020. "Effect of supercritical CO2 saturation pressures and temperatures on the methane adsorption behaviours of Longmaxi shale," Energy, Elsevier, vol. 206(C).
    16. Jurasz, Jakub & Piasecki, Adam & Hunt, Julian & Zheng, Wandong & Ma, Tao & Kies, Alexander, 2022. "Building integrated pumped-storage potential on a city scale: An analysis based on geographic information systems," Energy, Elsevier, vol. 242(C).
    17. Liu, Peng & Le, Jiawei & Wang, Lanlan & Pan, Tieying & Lu, Xilan & Zhang, Dexiang, 2016. "Relevance of carbon structure to formation of tar and liquid alkane during coal pyrolysis," Applied Energy, Elsevier, vol. 183(C), pages 470-477.
    18. Cui, Yuanlong & Zhu, Jie & Zoras, Stamatis & Zhang, Jizhe, 2021. "Comprehensive review of the recent advances in PV/T system with loop-pipe configuration and nanofluid," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    19. Lu, Yiyu & Xu, Zijie & Li, Honglian & Tang, Jiren & Chen, Xiayu, 2021. "The influences of super-critical CO2 saturation on tensile characteristics and failure modes of shales," Energy, Elsevier, vol. 221(C).
    20. Li, Sihai & Zhang, Shicheng & Xing, Huilin & Zou, Yushi, 2022. "CO2–brine–rock interactions altering the mineralogical, physical, and mechanical properties of carbonate-rich shale oil reservoirs," Energy, Elsevier, vol. 256(C).

    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:eee:energy:v:203:y:2020:i:c:s0360544220309452. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    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.