Development and Application of Mathematical Models of Pilot-Scale Catalytic Combustors Fueled by Gasified Biomasses
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- 作者：Gianpiero Groppi ; Enrico Tronconi ; Magnus Berg ; and Pio Forzatti
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2000
- 出版时间：November 2000
- 年：2000
- 卷：39
- 期：11
- 页码：4106 - 4113
- 全文大小：108K
- 年卷期：v.39,no.11(November 2000)
- ISSN：1520-5045
文摘
The mathematical modeling of the catalyst section of an atmospheric pilot-scale combustor fueledby gasified biomasses is addressed. The development of distributed three-dimensional (3D) andtwo-dimensional (2D) models of the single channel of the monolith catalyst is first described.The results of models derived under different assumptions are then compared in order to identifythe simplest accurate mathematical description. According to this procedure, a 2D model forcircular channel geometry, which includes axial conduction in the solid walls, can be regardedas the most suitable model for parametric investigations requiring a large number of simulations.Such a model is finally applied to the analysis of the results obtained in an experimental 30 kWpilot facility. A reasonable fitting of the experimental data is achieved, and the key role of high-temperature homogeneous and catalytic kinetics in determining the combustor performances ispointed out. In particular, evidence is provided in favor of temperature self-control of thepalladium catalyst because of a drop of CH4 combustion activity associated with thermaldecomposition of PdO.