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2014+Computational Modeling of Pulverized Coal Fired Boilers
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http://www.crcpress.com/product/isbn/9781482215281 Features Offers an introduction to boiler performance, fundamental equations, coal combustion, and reactivity Covers related industrial case studies Contains key boiler operation issues, including handling high ash coal Summary Harness State-of-the-Art Computational Modeling Tools Computational Modeling of Pulverized Coal Fired Boilers successfully establishes the use of computational modeling as an effective means to simulate and enhance boiler performance. This text factors in how computational flow models can provide a framework for developing a greater understanding of the underlying processes in PC boilers. It also provides a detailed account of the methodology of computational modeling of pulverized coal boilers, as well as an apt approach to modeling complex processes occurring in PC boilers in a manageable way. Connects Modeling with Real-Life Applications Restricted to the combustion side of the boiler (the authors assume some prior background of reaction engineering and numerical techniques), the book describes the individual aspects of combustion and heat recovery sections of PC boilers that can be used to further improve the design methodologies, optimize boiler performance, and solve practical boiler-related problems. The book provides guidelines on implementing the material in commercial CFD solvers, summarizes key points, and presents relevant case studies. It can also be used to model larger boilers based on conventional, super-critical, or ultra-super critical technologies as well as based on oxy-fuel technologies. Consisting of six chapters, this functional text: Provides a general introduction Explains the overall approach and methodology Explores kinetics of coal pyrolysis (devolatilization) and combustion and methods of its evaluation Presents computational flow modeling approach to simulate pulverized coal fired boiler Covers modeling aspects from formulation of model equations to simulation methodology Determines typical results obtained with computational flow models Discusses the phenomenological models or reactor network models Includes practical applications of computational modeling Computational Modeling of Pulverized Coal Fired Boilers explores the potential of computational models for better engineering of pulverized coal boilers, providing an ideal resource for practicing engineers working in utility industries. It also benefits boiler design companies, industrial consultants, R & D laboratories, and engineering scientists/research students. Table of Contents Introduction Coal Fired Boilers Computational Modeling Organization of the Book References Toward the Computational Modeling of Pulverized Coal Fired Boilers Overall Approach Engineering Design Models Particle-Level Models Boiler-Level Models Computational Fluid Dynamics (CFD) Models Reactor Network Models Applying Computational Models to Practice Summary References Kinetics of Coal Devolatilization and Combustion: Thermogravimetric Analysis (TGA) and Drop-Tube Furnace (DTF) Coal Devolatilization and Combustion Coal Characterization Using Thermogravimetric Analysis (TGA) Coal Characterization Using the Drop-Tube Furnace (DTF) Summary and Conclusions References CFD Model of a Pulverized Coal Fired Boiler Formulation of CFD Model of a PC Fired Boiler CFD Simulations of a PC Fired Boiler Summary and Conclusions References Reactor Network Model (RNM) of a Pulverized Coal Fired Boiler Approach to Develop Reactor Network Models Formulation of Reactor Network Models from CFD Simulations Model Equations and Solution Application of the RNM to a Typical 210-MWe PC Fired Boiler Summary and Conclusions References Application to Practice Performance Enhancement Using Computational Models Application of CFD Models to PC Fired Boilers Application of Reactor Network Models to PC Fired Boilers Common Pitfalls in Computational Modeling Summary References Summary and the Path Forward Notations Index |
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