The authors have formulated macrokinetic models of thermal decomposition of dolomite that vary in the number of the considered effective chemical processes, the mechanism of evacuation of carbon dioxide, the dependent/independent behavior of chemical reactions, and the number of parameters. The models were used as basic ones for approximating experimental data on the thermal decomposition of dolomite. The experiments on dolomite decomposition were conducted with a Q-1000 derivatograph of the MOM Company at a rate of heating of the samples of 5, 10, and 20 K/min, and also in a quasi-thermal regime. Based on the array of experimental data, the authors have determined the parameters of dolomite-decomposition models. An analysis of the adequacy of the models to the experimental data has been made. It has been shown that taking account of the series character of decomposition of dolomite and calcite in two reactions does not result in the improvement of the approximation accuracy of experimental data. The approximation accuracy of experimental data corresponds to the accuracy of approximated experimental data, with the models with 5 to 7 parameters exhibiting no noticeable advantages over 3- and 4-parametric models. However, the model with 2 parameters shows much lower accuracy. The models whose parameters were set according to the dynamic dolomite-decomposition data satisfactorily describe quasi-isothermal decomposition regime too; however, in modeling the latter, it is expedient to set the model′s parameters according to the data of quasi-isothermal experiments.
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M. A. A. Mohammed, I. A. Salmiaton, I. W. A. K. Wan Azlina, et al., Preparation and characterization of Malaysian dolomites as a tar cracking catalyst in biomass gasifi cation process, J. Energy, 2013, Article ID 791582 (2013).
Z. Hu, S. Xu, S. Li, C. Xiao, and S. Liu, Steam gasifi cation of apricot stones with olivine and dolomite as downstream catalysts, Fuel Proc. Technol., 87, No. 5, 375–382 (2006).
Q. Z. Yu, C. Brage, T. Nordgreen, and K. Sjostrom, Effects of Chinese dolomites on tar cracking in gasifi cation of birch, Fuel, 88, No. 10, 1922–1926 (2009).
P. Pérez, P. M. Aznar, M. A. Caballero, J. Gil, J. A. Martín, and J. Corella, Hot gas cleaning and upgrading with a calcined dolomite located downstream a biomass fl uidized bed gasifi er operating with steam−oxygen mixtures, Energy Fuels, 11, No. 6, 1194–1197 (1997).
C. Myren, C. Hornell, E. Bjornbom, and K. Sjoström, Catalytic tar decomposition of biomass pyrolysis gas with a combination of dolomite and silica, Biomass Bioenergy, 23, No. 3, 217–237 (2002).
J. Han and H. Kim, The reduction and control technology of tar during biomass gasification/pyrolysis: An overview, Renew. Sustain. Energy Rev., 12, No. 2, 397–416 (2008).
C. Rodriguez-Navarro, E. Ruiz-Agudo, A. Luque, A. B. Rodriguez-Navarro, and M. Ortega-Huertas, Thermal decomposition of calcite: Mechanisms of formation and textural evolution of CaO nanocrystals, Am. Mineral., 94, 578–593 (2009).
F. W. Wilburn and J. H. Sharp, The bed-depth effect in the thermal decomposition of carbonates, J. Therm. Anal., 40, 133–140 (1993).
C. Rodriguez-Navarro, K. Kudlacz, and E. Ruiz-Agudo, The mechanism of thermal decomposition of dolomite: New insights from 2D-XRD and TEM analyses, Am. Mineral., 97, 38−51 (2012).
A. V. Savin, A. A. Moiseeva, and P. G. Smirnov, Modeling of the dynamics of burning a granule of carbonate material, J. Eng. Phys. Thermophys., 90, No. 1, 59–66 (2017).
H. Mikulcic, E. von Berg, M. Vujanovic, P. Priesching, L. Perkovic, R. Tatschl, and N. Duic, Numerical modeling of calcination reaction mechanism for cement production, Chem. Eng. Sci., 69, 607–615 (2012).
G. D. Silcox, J. C. Kramlich, and D. W. Pershing, A mathematical model for the fl ash calcination of dispersed CaCO3 and Ca(OH)2 particles, Ind. Eng. Chem. Res., 28, 155–160 (1989).
M. Schneider, Experimentelle und mathematische Modellierung der Festbettvergasung am Beispiel der Gleichstromvergasung von Holzhackschnit-zeln, Ph.D. Thesis, TU, Dresden (2003).
C. Kern and A. Jess, Verkokung and Koksabbrand in heterogenen Katalysatoren, Chem. Ing. Tech., 8, 78−87 (2006).
M. Mohr, Numerische Simulation der simultanen Reaktion von Kalkstein und Kohle bei der Zementherstellung, Ph.D. Thesis, University of Ruhr, Bochum (2001).
R. M. McIntosh, J. H. Sharp, and F. W. Wilburn, The thermal decomposition of dolomite, Thermochim. Acta, 165, No. 2, 281–296 (1990).
K. V. Dobrego, Macrokinetic models of thermal destruction of dolomite to calculate gas-generator sorption systems, Énergetika, Izv. Vyssh. Uchebn. Zaved. Énerg. Ob′edin. SNG (CIS), No. 5, 51–59 (2015).
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 94, No. 4, pp. 925–935, July–August, 2021.
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Dobrego, K.V., Koznacheev, I.A., Shmelev, E.S. et al. Macrokinetic Models of Thermal Decomposition of Dolomite for Engineering Calculations. J Eng Phys Thermophy 94, 899–909 (2021). https://doi.org/10.1007/s10891-021-02366-x
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DOI: https://doi.org/10.1007/s10891-021-02366-x