3 edition of Modeling of fluidized-bed combustion of coal found in the catalog.
Modeling of fluidized-bed combustion of coal
Massachusetts Institute of Technology. Libraries.
by Dept. of Energy, Assistant Secretary for Energy Technology, Division of Power Systems in Washington
Written in English
|Series||HCP/T ; 2295-06|
|Contributions||United States. Dept. of Energy. Division of Power Systems|
|The Physical Object|
A three-dimensional computational model was developed to describe the coal-gasification processes inside fluidized-bed reactors. The commercial multi-purpose CFD code FLUENT was employed, taking into account drying, volatilization, combustion and Cited by: A fluidized bed is a physical phenomenon occurring when a quantity of a solid particulate substance (usually present in a holding vessel) is placed under appropriate conditions to cause a solid/fluid mixture to behave as a is usually achieved by the introduction of pressurized fluid through the particulate medium. This results in the medium then having many properties .
The preliminary analysis of a package-scale circulating fluidized bed (CFB) combustor through modeling and experimentation was performed to help determine particle trajectories and carbon burnout efficiency. The CFB consisted of a primary fast fluidizing bed and two bubbling : Matthew J. Kremer, Savas Yavuzkurt. Chapter 17 Circulating Fluidized-Bed Combustion and Gasification Model Chapter 18 Circulating Fluidized-Bed Simulation Program and Results Appendix A The Fundamental Equations of Transport Phenomena Appendix B Notes on Thermodynamics Appendix C Possible Improvements on Modeling Heterogeneous Reactions Price: $
Since , he has been a research expert on bubbling Fluidized Bed Combustion (FBC) of coal, water-containing fuels and wastes and, more recently, conventional petroleum fuels at low temperature. Another research area concerns food drying mechanism and processes (e.g., salami ripening, fluidized bed batch freeze-drying).Cited by: 8. FLUIDIZED BED COMBUSTION While the pulverized coal-fired boiler represents the most efficient type of coal- fired power plant, there are alternatives. One of these is the fluidized bed boiler. This type of combustion system is capable of burning a much wider range of fuels than a PC plant. It operates at a lower temperature, making.
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A comprehensive model for the simulation of fluidized bed coal combustors (FBC) is developed, capable of predicting the combustion efficiency, char and limestone elutriation and the corresponding. Modeling of fluidized bed combustion of coal. Washington: Dept. of Energy, Division of Power Systems, Energy Technology Branch ; Springfield, Va.: For sale by the National Technical Information Service, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.
Get this from a library. Modeling of fluidized-bed combustion of coal. [Massachusetts Institute of Technology.; United States. Department of Energy. Division of Power Systems.]. Circulating Fluidized Bed Technology II is a result of a series of science-related conferences in the s.
The text contains various studies, facts, and discussions on fluidized beds. The book begins by going through the rise and fall of circulating systems, specifically fluid dynamics. Other articles where Fluidized-bed combustion is discussed: coal utilization: Fluidized bed: In fluidized-bed combustion, a bed of crushed solid particles (usually six millimetres or less) is made to behave like a fluid by an airstream passing from the bottom of the bed at sufficient velocity to suspend the material in it.
The bed material—usually. In addition to discussing recent advances and outlining future directions, it covers advanced topics such as underground coal gasification and chemical looping combustion, and describes the state-of-the-art experimental techniques, modeling and numerical simulations, environmentally friendly approaches, and technological challenges involved.
A mathematical model has been developed to describe the coal combustion in a Circulating Fluidized Bed (CFB) reactor plant. Particular attention was given to the complex reactions, the behaviour of plantspecific equipment such as Cyclone and Fluidized Bed Heat Exchanger (FBHE) as well as to different methods of air feeding (primary and secondary air).Cited by: 9.
Radiative heat transfer in fluidized-bed coal combustion is modeled by including emission, absorption and scattering from combustion gases, as well as from coal, ash and char particles.
Fluidized bed combustion (FBC) is a combustion technology used to burn solid fuels. In its most basic form, fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials (sand, limestone etc.) through which jets of air are blown to provide the oxygen required for combustion or gasification.
Purchase Circulating Fluidized Bed Technology - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. Studies and modeling of atmospheric fluidized-bed combustion of coal Thesis/Dissertation Preto, F.D.S.
The three objectives of this study were to characterize the fluidization dynamics and heat transfer of beds composed of large non-uniform particles, to develop a comprehensive fluidized bed coal combustion model, and to verify the mathematical.
Fluidized bed combustion – modeling and mixing David Pallarès Department of Energy and Environment Division of Energy Technology Chalmers University of Technology Abstract First demonstrated on industrial scale influidized bed combustion (FBC) rapidly became an established technology for solid fuel combustion with a currentCited by: 5.
Fluidized bed combustion is currently intensively developed throughout the world to produce energy from several types of solid fuels, while significantly reducing pollutant emissions with respect to conventional combustion units. Accurate models must be formulated at both bed and particle levels to operate efficiently such units, since local phenomena such as Cited by: 4.
A steady-state model has been developed to simulate the North Carolina State University pilot-scale fluidized bed coal gasification reactor. The model involves instantaneous devolatilization of coal in the free-board region and char combustion and.
SIMULATION OF FLUIDIZED BED COAL COMBUSTORS. Roenga Rajan, R. Krishnan, and C. Wen West Virginia University Morgantown, West Virginia NAsA-CR) -- sU ion OF FLUIDIZED BED COAL COMBUSTORS Final ReportFile Size: 8MB.
Details the development of fluidized bed combustion boilers, as well as the fundamental processes in boiler furnaces and coal combustion in fluidized beds. Explores applications in the investigation of coal suitability for fluidized bed combustion, as well as harmful matter emissions from FBC boilers.
Solid Fuels Combustion and Gasification: Modeling, Simulation, and Equipment Operations, Second Edition explores evolving solid fuel combustion and gasification techniques that are leading to much lower sulfur and nitrogen oxide emissions. It also shows how to increase the efficiency of processes dealing with materials such as coal, biomass.
IV Abstract The scope of this project is to create a model of a dynamic bubbling fluidized bed boiler in Dymola. The model must be able to run in real time as it will be used for operator training. Fluidized Bed Combustion (FBC Boiler) “Fluidized bed combustion (FBC) is a combustion technology used to burn solid fuels.”.
A bed of solid particles is said to be fluidized when the pressurized fluid (liquid or gas) is passed through the medium and causes the solid particles to behave like a fluid under certain conditions.
Fluidization causes the transformation of the state. Beginning with a general introduction to fossil or biofuel conversion choices, the book surveys hydrodynamics, fundamentals of gasification, combustion of solid fuels, pollution aspects including climate change mitigation, heat transfer in fluidized beds, the design and operation of bubbling and circulating fluidized bed boilers, and various.
Though fluidized bed combustion was conceived in the 's (separately, but almost simultaneously, by Fritz Winkler of Germany and W.W. Odell of the United States), scientists around the world. Purchase Atmospheric Fluidized Bed Coal Combustion, Volume 22 - 1st Edition. Print Book & E-Book.
ISBNBook Edition: 1.§ Air-pollution and contamination of coal and bio mass fired fluidized bed combustors. Keywords: Fluidized bed, combustion, wastes, risk, hazards INTRODUCTION The paper tries to define the well known and the potential risk-related spots of the FBC technology from the positions of the modern Safety-Related Engineering Approach in process Size: 69KB.