Acoustic emission and sorptive deformation induced in coals of various rank by the sorption-desorption of gas

• Autorzy: Majewska Z. , Ziętek J.
• Języki publikacji: EN

Abstrakty

EN

Simultaneous measurements of acoustic emission (AE) and expansion/ contraction of coal samples subjected to gas sorption-desorption processes were conducted on high- and medium-rank coal. The aim of this study was to examine the influence of the coal rank and type of sorbate on measured AE and strain characteristics. The experimental equipment employed in this study consisted of a pressure vessel and associated pressurisation and monitoring units. The arrangement of pressure-vacuum valves permitted the coal sample to be pressurised and depressurised. Carbon-dioxide and methane were used as sorbats. Acoustic emission and strains were recorded continuously for a period of 50 hours during sorption and for at least 12 hours during the desorption process. Tests were conducted on cylindrical coal samples at 298 K. The experimental data were presented as plots of AE basic parameters versus time and in strain diagrams. These studies lead to the following conclusions: 1. There are significant differences in AE and strain characteristics for the two sys-tems (coal-CO2 and coal-CH4); 2. There is a direct influence of rank and type of coal on its behaviour during the sorption-desorption of gas. An attempt has been made to interpret the results obtained on the grounds of the copolymer model of coal structure. More research is needed into this topic in order to get a quantitative description of the observed facts.

Słowa kluczowe

EN

acoustic emission; sorption of carbon dioxide; sorption of methane; coal swelling; coalbed methane; carbon-dioxide storage

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2007
• Tom: Vol. 55, no. 3
• Strony: 324--343

Twórcy

autor

Majewska Z.

autor

Ziętek J.

• AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Kraków, Poland,

Bibliografia

• Amarasekera, G., M. Scarlett and D. Mainwaring, 1995, Micropore size distributions and interactions in coals, Fuel 74, 115-118.
• Ceglarska-Stefańska, G., 1990, Correlation between sorption and dilatometric processes in systems: hard coals-water vapour, carbon-dioxide, methane, Chemistry Bulletin 16, Scientific Bulletins of the AGH University of Science and Technology, Kraków (in Polish).
• Ceglarska-Stefańska, G., 1994, Effect of gas pressure in methane induced swelling on the porous structure of coals, Studies in Surface Science and Catalysis 87, 671-677.
• Ceglarska-Stefańska, G., and A. Czapliński, 1990, Interdependence of sorptive and dilatometric phenomena in hard coal. In: J. Litwiniszyn (ed.), "Strates Multiphase Medium. Rock and Gas Outbursts", AGH Publishers, Kraków, 2, 411-442 (in Polish).
• Ceglarska-Stefańska, G., and A. Czapliński, 1993, Correlation between sorption and dilatometric processes in hard coals, Fuel 72, 413-417.
• Ceglarska-Stefańska, G., and K. Zarębska, 2002, Expansion and contraction of variable rank coals during the exchange sorption of CO2 and CH4, Adsorption Science & Technology 20, 49-62.
• El Moundni, M., S. Benmedakhene and A. Laksimi, 2000, Waveform Analysis of Acoustic Emission on Thin Composites Structures, Proc. 24th European Conference on Acoustic Emission Testing EWGAE 2000, May 2000, Senlis, France, 375-380.
• Gori, M., P. Tscheliesnig and G. Lacknet, 2000, Inspection of Flat Bottomed Storage Tanks by Acoustical Methods. Classification of Corrosion Related Signals, Proc. 24th European Conference on Acoustic Emission Testing EWGAE 2000, May 2000, Senlis, France, 221-226.
• Hall, P., K. Thomas and H. Marsh, 1992, The relation between coal macromolecular structure and solvent diffusion mechanisms, Fuel 71, 1271-1275.
• Hardy, H.R. (Jr.), 1972, Application of acoustic emission techniques to rock mechanics research. In: R.G. Liptai, D.O. Harris and C.A. Tatro (eds.), "Acoustic Emission", STP 505, American Society for Testing and Materials, Philadelphia, 41-83.
• Hardy, H.R. (Jr.), 1981, Applications of acoustic emission techniques to rock and rock structures: a state-of-the-art review. In: V.P. Drnevich and R.E. Gray (eds.), "Acoustic Emission in Geotechnical Engineering Practice", STP 750, American Society for Testing and Materials, Philadelphia, 4-92.
• Hardy, H.R. (Jr.), 2003, Acoustic Emission Microseismic Activity. Vol. 1. Principles, Techniques, and Geotechnical Applications, A.A. Balkema Publishers, Rotterdam.
• Karacan, C.O., 2003, Heterogeneous sorption and swelling in confined and stressed coal during CO2 injection, Energy and Fuels 17, 1595-1608.
• Karacan, C.O., and G.D. Mitchell, 2003, Behaviour and effect of different coal microlithotypes during gas transport for carbon dioxide sequestration into coal seams, Intern. J. Coal Geol. 53, 201-217.
• Khair, A.W., and V.B. Achanti, 1998, The effects of specimen geometry and rate of loading on acoustic emission in coal, Proc. Sixth Conference on Acoustic Emission/Microseismic Activity in Geological Structures and Material, The Pennsylvania State University, June 1996, Trans. Tech. Publications, Clausthal-Zellerfeld, Germany, 43-58.
• Knill, J.L., I.A. Franklin and A.W. Malone, 1968, A study of acoustic emission from stressed rock, J. Rock Mech. Min. Sci. 5, 87-121.
• Koerner, R.M., W.M. McCabe and A.E. Lord (Jr.), 1981, Acoustic emission behaviour and monitoring of soils. In: V.P. Drnevich and R.E. Gray (eds.), "Acoustic Emission in Geotechnical Engineering Practice", STP 750, American Society for Testing and Materials, Philadelphia, 93-141.
• Lockner, D.A., and J.D. Byerlee, 1995, Precursory AE patterns leading to rock fracture, Proc. Fifth Conference on Acoustic Emission/Microseismic Activity in Geologic Structures and Materials, The Pennsylvania State University, June 1991, Trans. Tech. Publications, Clausthal-Zellerfeld, Germany, 45-58.
• Lord, A.E. (Jr.), and R.M. Koerner, 1979, Acoustic emission in geologic materials. In: K. Ono (ed.), "Fundamentals of Acoustic Emission", School of Engineering and Applied Science, University of California, Los Angeles, 261-307.
• Majewska, Z., and J. Ziętek, 1999, Acoustic emission generated in systems: coal-carbon dioxide and coal-methane, Archives of Mining Sciences 44, 245-254.
• Majewska, Z., and Z. Mortimer, 2006, Chaotic behaviour of acoustic emission induced in hard coal by gas sorption-desorption, Acta Geophys. 54, 1, 50-59.
• Majewska, Z., S. Majewski, H. Marcak, W. Mościcki, S. Tomecka-Suchoń and J. Ziętek, 1994, Acoustic emission of coal induced by: gas and water flow, gas sorption or stress, J. Acoustic Emission 12, 1-7.
• Majewska, Z., S. Lasocki and J. Ziętek, 1996, Spectra of acoustic emisson induced in coal by gas sorption, Acta Montana, IRFM-AF-CR series A9 (100), 175-182.
• Majewska, Z., S. Lasocki and J. Ziętek, 1997, Research into the origin of acoustic emission inducedin hard coal by gas and water flow. In: S.J. Gibowicz and S. Lasocki (eds.), "Rockburst and Seismicity in Mines", A.A. Balkema, Rotterdam-Brookfield, 421-425.
• Majewska, Z., S. Majewski and J. Ziętek, 1998, Acoustic emission and volumetric sorption expansion of coal, Proc. Sixth Conference on Acoustic Emission/Microseismic Activity in Geological Structures and Material, The Pennsylvania State University, June 1996, Trans. Tech. Publications, Clausthal-Zellerfeld, Germany, 59-71.
• McCabe, W.M., 1980, Acoustic emission in coal: a laboratory study, Proc. Second Conference on Acoustic Emission/Microseismic Activity in Geologic Structures and Materials, The Pennsylvania State University, November 1978, Trans. Tech. Publications, Clausthal-Zellerfeld, Germany, 35-53.
• Milewska-Duda, J., 1993, The coal-sorbate system in the light of the theory of polymer solutions, Fuel 72, 419-425.
• Milewska-Duda, J., G. Ceglarska-Stefańska and J. Duda, 1994, A comparison of theoretical and empirical expansion of coals in the high pressure sorption of methane, Fuel 73, 975-979.
• Milewska-Duda, J., J. Duda, A. Nodzeński and J. Lakatos, 2000, Absorption and adsorption of methane and carbon dioxide in hard coal and active carbon, Langmuir 16, 5458-5466.
• Mogi, K., 1962, Study of elastic shocks caused by the fracture of heterogeneous materials and its relation to earthquake phenomena, Bull. Earthq. Res. Inst. 40, 125-173.
• Nodzeński, A., 2000, High pressure desorption of carbon-dioxide and methane from the Lower Silesia Basin hard coals, Dissertations Monographies 95, Scientific Bulletins of the AGH University of Science and Technology, Kraków (in Polish).
• Pollock, A.A., 1977, Metals and rocks: AE physics and technology in common and in contrast, Proc. First Conference on AE/MA in Geologic Structures and Materials, The Pennsylvania State University, June 1975, Trans. Tech. Publications, Clausthal-Zellerfeld, Germany, 383-403.
• Rogers, L., 2000, Crack microstructure and sources of acoustic emission in metals, Proc. 24th Europ. Confer. on Acoustic Emission Testing EWGAE 2000, May 2000, Senlis, France, 91-106.
• Scholz, C.H., 1968, Microfracturing and inelastic deformation of rock, J. Geophys. Res. 73, 4, 1417-1432.
• Skudrzyk, Z., 1982, Acoustic emission activity of hard coal in the light of laboratory tests, Publs. Inst. Geophys. Pol. Acad. Sc. M-5, 155 (in Polish).
• Surgeon, M., C. Buelens and M. Wevers, 2000, Waveform based analysis techniques for the reliable acoustic emission testing of composite structures, Proc. 24th Europ. Confer. on Acoustic Emission Testing EWGAE 2000, May 2000, Senlis, France, 63-68.
• Wood, B.R.A., R.W. Harris and R.J. Colburn, 1984, Long term monitoring of a large concrete dam with acoustic emission, Proc. 7th Intern. Acoustic Emission Symposium, Zao, Japan, Oct. 1984, Japanese Society for Non-Destructive Inspection, Tokyo, 642-651.
• Yuyama, S., 1986, Fundamental aspects of acoustic emission to the problems caused by corrosion, corrosion monitoring in industrial plants using nondestructive testing and electrochemical methods, ASTM STP 908, 43-74.
• Ziętek, J., 2005, Acoustic emission characteristics of the coal-gas system, PhD Thesis, AGH University of Science and Technology, Kraków (in Polish).