Abstract
A numerical investigation of a catalytically stabilized thermal (CST) combustor was conducted for a multichannel catalyst bed, and both the catalyst bed and thermal combustor were simultaneously modeled. The numerical model handled the coupling of the surface and gas reaction in the catalyst bed as well as the gas reaction in the thermal combustor. The behavior of the catalyst bed was investigated at a variety of operating conditions, and location of the flame in the CST combustor was investigated via an analysis of the distribution of CO concentration. Through parametric analyses of the flame position, it was possible to derive a criterion to determine whether the flame is present in the catalyst bed or the thermal combustor for a given inlet condition. The results showed that the maximum inlet temperature at which the flame is located in the thermal combustor increased with increasing inlet velocity.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Beebe, K. W., Cairns, K. D., Pareek, V. K., Nickolas, S. G., Schlatter, J. C. and Tsuchiya, T., “Development of Catalytic Combustion Technology for Single-digit Emissions from Industrial Gas Turbines”,Catalysis Today,59, 95 (2000).
Dalla Betta, R. A. and Nielsen, T. R., “Application of Catalytic Combustion to a 1.5 MW Industrial Gas Turbine”,Catalysis Today,47, 369 (1999).
Fluent software, “FLUENT User's Guide”, Fluent Incorporated, http:// www. fluent.com (2002).
Furuya, T., Sasaki, K., Hanakata, Y., Ohhashi, T., Yamada, M., Tsuchiya, T. and Furuse, Y., “Development of a Hybrid Catalytic Combustor for a 1,300 ‡C Class Gas Turbine”,Catalysis Today,26, 345 (1995).
Hayes, R. E. and Kolaczkowski, S. T., “Introduction to Catalytic Combustion”, Gordon and Breach Science Publishers, 169 (1997).
Inoue, H., Sekizawa, K., Eguchi, K. and Arai, H., “Thick-Film Coating of Hexaaluminate Catalyst on Ceramic Substrates for High-temperature Combustion”,Catalysis Today,47, 181 (1999).
Jang, B. W., Nelson, R. M., Spivey, J., Ocal, M., Oukaci, R. and Marcelin, G., “Catalytic Oxidation of Methane over Hexaaluminates and Hexaaluminate-supported Pd Catalysts”,Catalysis Today,47, 103 (1999).
Kim, D. K., Lee, S. B. and Yoon, P., “Numerical Simulation of Fixedbed Catalytic Reactor for Isopropyl Alcohol Synthesis”,Korean J. Chem. Eng.,6(2), 99 (1989).
Kolaczkowski, S. T., “Catalytic Stationary Gas Turbine Combustor: A Review of the Challenges Faced to Clear the Nest Set of Hurdles”,Trans IchemE.,73, Part A, 168 (1995).
Leung, D. and Hayes, R. E., “Diffusion Limitation Effects in the Washcoat of a Catalytic Monolith Reactor”,The Canadian Journal of Chemical Engineering,74, 94 (1996).
Lewis, B. and Guenther von Elbe, “Combustion Flames and Explosions of Gases”, Academic Press (1961).
Mantzaras, J., Appel, C., Benz, P. and Dogwiler, U., “Numerical Modeling of Turbulent CatalyticaUy Stabilized Channel Flow Combustion”,Catalysis Today,59, 3 (2000).
Pfefferle, L. D. and Pfefferle, W. C., “Catalysis in Combustion”,Catal. Rev.-Sci. Eng.,29(2–3), 219 (1987).
Raja, L. L., Kee, R. J., Deutschmann, O., Warnatz, J. and Schmidt, L. D., “A Critical Evaluation of Navier-Stokes, Boundary-layer and Plugflow Models of the Flow and Chemistry in a Catalytic-combustion Monolith”,Catalysis Today,50, 47 (2000).
Sadamori, H., “Application Concepts and Evaluation of Small-scale Catalytic Combustors for Natural Gas”,Catalysis Today,47, 325 (1999).
Seo, Y S., Cho, S. J., Kang, S. K. and Shin, H. D., “Numerical Studies of Catalytic Combustion in a CatalyticaUy Stabilized Combustor”,International Journal of Energy Research,24, 1049 (2000a).
Seo, Y S., Cho, S. J., Kang, S. K. and Shin, H. D., “Experimental and Numerical Studies on Combustion Characteristics of a CatalyticaUy Stabilized Combustor”,Catalysis Today,59, 75 (2000b).
Trimm, D. L., “Catalytic Combustion (Review)”,Appl. Catal.,7, 249 (1984).
Wanker, R., Raupenrauch, H. and Staudinger, G., “A Fully Distributed Model for the Simulation of a Catalytic Combustor”,Chemical Engineering Science,55, 4709 (2000).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Seo, YS., Song, KS. & Kang, SK. Studies of surface and gas reactions in a catalytically stabilized combustor. Korean J. Chem. Eng. 20, 819–828 (2003). https://doi.org/10.1007/BF02697282
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02697282