Tytuł artykułu
Autorzy
Identyfikatory
Warianty tytułu
Języki publikacji
Abstrakty
The emission prevention of carbon dioxide has become an important problem recent years. In order to facilitate the sequestration of CO2 from flue gases, the combustion can be carried out in the oxidizer, which contains a mixture of CO2 and O2 without the presence of nitrogen. The Computational Fluid Dynamics is widely used in order to design new devices and to improve existing ones. Computational costs, when detailed chemistry is employed in calculations of the flame, are too large for real applications, therefore, simplified mechanisms have to be used to solve those problems. Because the laminar flame speed is an important parameter for a burners design and has major influence on a combustion process control, therefore, a good prediction of this quantity, using reduced mechanisms, is crucial. The aim of the present work was to figure out the influence of oxidizer composition on the laminar flame speed and to examine simplified mechanisms in order to achieve similar laminar flame speed levels to those obtained for the detailed mechanism computations, during combustion of methane in the CO2/O2 atmosphere. All calculations were done using the Freely Propagating 1D Laminar Premixed Flames (FP1DLPF) package coupled with the COSILAB software. For the combustion of CH4 in the CO2/O2 atmosphere, new reduced mechanisms were created for the oxidizer composition for which the laminar flame speed, for stoichiometric conditions, was similar to this obtained for the methane combustion in air. Similar laminar flame speed values for the conventional combustion and the oxy-combustion was obtained for the oxidizer composition of XoxidO2=0,385 XoxidCO2=0,615. Modified reduced mechanisms of methane combustion in comparison with schemes that are used for the conventional combustion, improved the accuracy of the laminar flame speed prediction with the detailed mechanism considerably, for the oxy-combustion environment.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
287--296
Opis fizyczny
Bibliogr. 19 poz., rys., tab.
Twórcy
autor
autor
- Silesian University of Technology, Institute of Thermal Technology, 22 Konarskiego, 44-100 Gliwice, Poland, jakub.bibrzycki@polsl.pl
Bibliografia
- [1] T. Giselsson, J. Andersen, Ch. L. Rasmussen and P. Glarborg, Global combustion mechanisms for use in CFD modeling under oxy-fuel conditions, Energy & Fuels, 23:13791389, 2009.
- [2] K. Andersson and Filip Johnsson, Flame and radiation characteristics of gas-fired O2/CO2 combustion, Fuel, 86:656668, 2007.
- [3] I. Gokalp, D. F. Kurtulus, C. Cohea, Ch. Chauveau, CO2 addition and pressure effects on laminar and turbulent lean premixed CH4 air flames, Proceedings of the Combustion Institute, 32:18031810, 2009.
- [4] E. Salzano F. Cammarota G. Russo A. Di Benedetto, V. Di Sarli, Explosion behavior of CH4/O2/N2/CO2 and H2/O2/N2/CO2 mixtures, International Journal of Hydrogen Energy, 34:6970 6978, 2009.
- [5] T. Faravelli, E. Ranzi, C. Candusso, A. Frassoldati, A. Cuoci and D. Tolazzi, Simplified kinetic schemes for oxy-fuel combustion, In 1st International Conference on Sustainable Fossil Fuels for Future Energy, 2009.
- [6] C. Westbrook and F. Dryer, Simplified reaction mechanism for the oxidation of hydrocarbon fuels in flames, Combust. Sci. Tech., 27:31–43, 1981.
- [7] G. Boudier, Methane/air flame with 2-step chemistry: 2S-CH4-CM2, CERFACS technical report, 2007.
- [8] W. P. Jones and R. P. Lindstedt, Global reaction schemes for hydrocarbon combustion, Combust. Flame, 73:222–233, 1988.
- [9] A. C. Zambon and H. K. Chelliah, Explicit reduced reaction models for ignition, flame propagation and extinction of C2H4/CH4/H2 and air systems, Combustion and Flame, 150:71–91, 2007.
- [10] C. K. Law, C. J. Sung and J. Y. Chen, An augmented reduced mechanism for methane oxidation with comprehensive global parametric validation, In Twenty-Seventh Symposium (International) on Combustion, The Combustion Institute, 1998.
- [11] M. Frenklach, N. W. Moriarty, B. Eiteneer, M. Goldenberg, C. T. Bowman, R. K. Hanson S. Song, W. C. Gardiner Jr., V. V. Lissianski, G. P. Smith, D. M. Golden and Z. Qin, GRI Mech 3.0, http://www.me.berkeley.edu/gri-mech/.
- [12] T. Poinsot and D. Veynante, Theoretical and Numerical Combustion, R.T. Edwards, 2nd edition, 2005.
- [13] COSILAB Combustion Simulation Laboratory Manual, version 2.0.
- [14] B. Rogg, R. S. Cant and K. N. C. Bray, On laminar flamelet modelling of the mean reaction rate in a premixed turbulent flame, Combustion Science and Technology, 69:53–61, 1990.
- [15] J. F. Driscoll, Turbulent premixed combustion: flamelet structure and its effect on turbulent burning velocities, Progress in Energy and Combustion Science, 34:91134, 2008.
- [16] Ryszard Petela, Paliwa i ich spalanie cz. II Spalanie, Dział Wydawnictw Politechniki Śląskiej, 1982.
- [17] T. Boushaki, B. Ferret, L. Selle, Y. Dhue and T. Poinsot, Experimental and numerical study of the accuracy of flame-speed measurements in Bunsen burner, In Sixth Mediterranean Combustion Symposium MCS 6, 2009.
- [18] X. J. Gu, M. Z. Haq, M. Lawes and R. Woolley, Laminar burning velocity and Markstein lengths of methane-air mixtures, Combust. Flame, 121:41–58, 2000.
- [19] C. M. Vagelopoulos and F. Egolfopoulos, Direct experimental determination of laminar flame speeds, In 27th Symp. (Int.) on Combustion, The Combustion Institute, pages 513–519, Pittsburgh, 1998.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BWM4-0031-0001