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Experimental study on acoustic emission characteristics of high-temperature thermal damage in an oxygen-rich environment of long flame coal

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Abstract

In the process of underground coal gasification, the development and evolution of cracks are vital for efficient coal gasification. In this paper, long flame coal is taken as a test object and heated to different temperatures (100–500 °C) in an oxygen-rich environment. The failure process of coal samples was analysed and monitored based on acoustic emission (AE) technique. The results show that the heating process of coal samples can be divided into two stages—room temperature to 300 °C and 300–500 °C—where the AE counts, energy and mass loss are closely related. Inflection points of the b-value occur at the temperatures of 250 and 400 °C corresponding to the change of AE counts. The cracks on the surface of coal samples gradually vary in width with the increase in heating temperature in the range of 100–400 °C, and the crack width becomes narrow at 500 °C due to the sealing of pores by tar condensation.

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References

  1. Hassan A, Ilyas SZ, Jalil A, Ullah Z. Monetization of the environmental damage caused by fossil fuels. Environ Sci Pollut Res. 2021;28(17):21204–11. https://doi.org/10.1007/s11356-020-12205-w.

    Article  Google Scholar 

  2. Mohr SH, Wang J, Ellem G, Ward J, Giurco D. Projection of world fossil fuels by country. Fuel. 2015;141:120–35. https://doi.org/10.1016/j.fuel.2014.10.030.

    Article  CAS  Google Scholar 

  3. Nehring R. Traversing the mountaintop: world fossil fuel production to 2050. Philos Trans R Soc B. 2009;364(1532):3067–79. https://doi.org/10.1098/rstb.2009.0170.

    Article  Google Scholar 

  4. Zhao H, Li B, Wang X, Lu H, Li H. Evaluating the performance of China’s coal-fired power plants considering the coal depletion cost: a system dynamic analysis. J Clean Prod. 2020;275: 122809. https://doi.org/10.1016/j.jclepro.2020.122809.

    Article  Google Scholar 

  5. Song Y, Wang N. Exploring temporal and spatial evolution of global coal supply-demand and flow structure. Energy. 2019;168:1073–80. https://doi.org/10.1016/j.energy.2018.11.144.

    Article  Google Scholar 

  6. Gao H, An B, Han Z, Guo Y, Ruan Z, Li W, Zayzay S. The sustainable development of aged coal mine achieved by recovering pillar-blocked coal resources. Energies. 2020;13(15):3912. https://doi.org/10.3390/en13153912.

    Article  Google Scholar 

  7. Sivrikaya O. Cleaning study of a low-rank lignite with DMS, Reichert spiral and flotation. Fuel. 2014;119:252–8. https://doi.org/10.1016/j.fuel.2013.11.061.

    Article  CAS  Google Scholar 

  8. Luan H, Jiang Y, Lin H, Wang Y. A new thin seam backfill mining technology and its application. Energies. 2017;10(12):2023. https://doi.org/10.3390/en10122023.

    Article  Google Scholar 

  9. Tian Z, Zhang Z, Deng M, Yan S, Bai J. Gob-side entry retained with soft roof, floor, and seam in thin coal seams: a case study. Sustainability. 2020;12(3):1197. https://doi.org/10.3390/su12031197.

    Article  Google Scholar 

  10. Zhao T, Zhang Z, Tan Y, Shi C, Wei P, Li Q. An innovative approach to thin coal seam mining of complex geological conditions by pressure regulation. Int J Rock Mech Min. 2014;71:249–57. https://doi.org/10.1016/j.ijrmms.2014.05.021.

    Article  Google Scholar 

  11. Yang D, Koukouzas N, Green M, Sheng Y. Recent development on underground coal gasification and subsequent CO2 storage. J Energy Inst. 2016;89(4):469–84. https://doi.org/10.1016/j.joei.2015.05.004.

    Article  CAS  Google Scholar 

  12. Bhutto AW, Bazmi AA, Zahedi G. Underground coal gasification: from fundamentals to applications. Prog Energy Combust. 2013;39(1):189–214. https://doi.org/10.1016/j.pecs.2012.09.004.

    Article  CAS  Google Scholar 

  13. Xin L, Li J, Xie J, et al. Simulation of cavity extension formation in the early ignition stage based on a coal block gasification experiment. J Energ Resour-Asme. 2020;142(6): 062304. https://doi.org/10.1115/1.4045830.

    Article  Google Scholar 

  14. Su FQ, Hamanaka A, Itakura K, Zhang W, Deguchi G, Sato K, Takahashi K, Kodama J. Monitoring and evaluation of simulated underground coal gasification in an ex-situ experimental artificial coal seam system. Appl Energy. 2018;223:82–92. https://doi.org/10.1016/j.apenergy.2018.04.045.

    Article  CAS  Google Scholar 

  15. Liu WR, Liu JK, Zhu C. Multi-scale effect of acoustic emission characteristics of 3D rock damage. Arab J Geosci. 2019;12(22):668. https://doi.org/10.1007/s12517-019-4864-4.

    Article  Google Scholar 

  16. Shkuratnik VL, Kravchenko OS, Filimonov YL. Acoustic emission of rock salt at different uniaxial strain rates and under temperature. J Appl Mech Tech Phys. 2020;61(3):479–85. https://doi.org/10.1134/S0021894420030207.

    Article  Google Scholar 

  17. Zhang Y, Wu W, Yao X, Liang P, Sun L, Liu X. Study on spectrum characteristics and clustering of acoustic emission signals from rock fracture. Circ Syst Signal Process. 2020;39(2):1133–45. https://doi.org/10.1007/s00034-019-01168-0.

    Article  Google Scholar 

  18. Ge Z, Sun Q. Acoustic emission characteristics of gabbro after microwave heating. Int J Rock Mech Min. 2021;138: 104616. https://doi.org/10.1016/j.ijrmms.2021.104616.

    Article  Google Scholar 

  19. Lai X, Ren J, Cui F, Shan P. Study on vertical cross loading fracture of coal mass through hole based on AE-TF characteristics. Appl Acoust. 2020;166: 107353. https://doi.org/10.1016/j.apacoust.2020.107353.

    Article  Google Scholar 

  20. He Q, Liu Z, Li Y, Li D. Laboratory investigation on microcrack fracturing behaviour of granite under quasi-static combined compression and shear. Geomech Geophys Geo-resour. 2021;7(3):52. https://doi.org/10.1007/s40948-021-00244-7.

    Article  Google Scholar 

  21. Zhang Z, Wang E, Zhao E, Yang S. Nonlinear characteristics of acoustic emission suring the heating process of coal and rock. Fractals. 2018;26(4):1850046. https://doi.org/10.1142/S0218348X18500469.

    Article  Google Scholar 

  22. Su FQ, Itakura KI, Deguchi G, Ohga K. Monitoring of coal fracturing in underground coal gasification by acoustic emission techniques. Appl Energy. 2017;189:142–56. https://doi.org/10.1016/j.apenergy.2016.11.082.

    Article  CAS  Google Scholar 

  23. Su FQ, Hamanaka A, Itakura KI, Deguchi G, Zhang W, Nan H. Evaluation of a compact coaxial underground coal gasification system inside an artificial coal seam. Energies. 2018;11(4):898. https://doi.org/10.3390/en11040898.

    Article  CAS  Google Scholar 

  24. Su FQ, Nakanowataru T, Itakura KI, Ohga K, Deguchi G. Evaluation of structural changes in the coal specimen heating process and UCG model experiments for developing efficient UCG systems. Energies. 2013;6(5):2386–406. https://doi.org/10.3390/en6052386.

    Article  CAS  Google Scholar 

  25. Kong B, Wang E, Li Z. Regularity and coupling correlation between acoustic emission and electromagnetic radiation during rock heating process. Geomech Eng. 2018;15(5):1125–33. https://doi.org/10.12989/gae.2018.15.5.1125.

    Article  Google Scholar 

  26. Kong B, Li Z, Wang E. Fine characterization rock thermal damage by acoustic emission technique. J Geophys Eng. 2018;15(1):1–12. https://doi.org/10.1088/1742-2140/aa9a54.

    Article  Google Scholar 

  27. Alberto FD. Characterization of damage by “b-value” of acoustic emission events in andesite rock breakage tests. Materia-Brazil. 2018;23(2):e12068. https://doi.org/10.1590/S1517-707620180002.0404.

    Article  Google Scholar 

  28. Rao M, Lakshmi KJP. Analysis of b-value and improved b-value of acoustic emissions accompanying rock fracture. Curr Sci India. 2005;89(9):1577–82.

    CAS  Google Scholar 

  29. Rao MVMS, Lakshmi KJP. Amplitude distribution analysis of acoustic emissions and investigation of the development of brittle fracture in rock. Indian J Pure Ap Phy. 2006;44(11):820–5.

    CAS  Google Scholar 

  30. Zhang Q, Zhang XP. A numerical study on cracking processes in limestone by the b-value analysis of acoustic emissions. Comput Geotech. 2017;92:1–10. https://doi.org/10.1016/j.compgeo.2017.07.013.

    Article  Google Scholar 

  31. Lin YK, Li QS, Li XF, Ji K, Zhang HP, Yu YM, Song YH, Fu Y, Sun LY. Pyrolysates distribution and kinetics of Shenmu long flame coal. Energy Convers Manag. 2014;86:428–34. https://doi.org/10.1016/j.enconman.2014.04.091.

    Article  CAS  Google Scholar 

  32. Giroux L, Charland JP, MacPhee JA. Application of thermogravimetric Fourier transform infrared spectroscopy (TG-FTIR) to the analysis of oxygen functional groups in coal. Energy Fuel. 2006;20(5):1988–96. https://doi.org/10.1021/ef0600917.

    Article  CAS  Google Scholar 

  33. Lin XC, Luo M, Li SY, Yang YP, Chen XJ, Tian B, Wang YG. The evolutionary route of coal matrix during integrated cascade pyrolysis of a typical low-rank coal. Appl Energy. 2017;199:335–46. https://doi.org/10.1016/j.apenergy.2017.05.040.

    Article  CAS  Google Scholar 

Download references

Acknowledgements

This research was supported by the National Natural Science Foundation of China (Grant Nos. 41972288, 41902174, 4210021463), Natural Science Basic Research Program of Shaanxi Province (No. 2020JQ-744), and Shaanxi Provincial Education Department general special project (No. 21JK0775)

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Authors and Affiliations

  1. College of Geology and Environment, Xi’an University of Science and Technology, Xi’an, 710054, Shaanxi, China

    Rui Ding, Qiang Sun, Shengze Xue, Qingmin Shi, Zhenlong Ge & Delu Li

  2. Geological Research Institute for Coal Green Mining, Xi’an University of Science and Technology, Xi’an, 710054, China

    Qiang Sun, Qingmin Shi & Delu Li

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  1. Rui Ding
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  2. Qiang Sun
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  3. Shengze Xue
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  4. Qingmin Shi
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  5. Zhenlong Ge
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  6. Delu Li
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Contributions

All authors contributed to the study conception and design. The first draft of the manuscript and the drawing of the diagram were completed by RD, and all authors commented on the previous versions of the manuscript. Manuscript writing guidance, the first draft revision, was completed by the corresponding author RD and QS. SX and QS help analyse the data and provide theoretical support. ZG and DL help to complete the experiments of this study.

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Correspondence to Rui Ding or Qiang Sun.

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Ding, R., Sun, Q., Xue, S. et al. Experimental study on acoustic emission characteristics of high-temperature thermal damage in an oxygen-rich environment of long flame coal. J Therm Anal Calorim 147, 11391–11400 (2022). https://doi.org/10.1007/s10973-022-11353-0

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