Download or read book Fluidized Bed Combustion of Moist Brown Coal Particles written by Asim Kumar Das and published by . This book was released on 1983 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluidized Combustion of Brown Coal Particles written by Kujong Jung and published by . This book was released on 1980 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxy fuel Fluidized Bed Combustion of Victorian Brown Coal written by Bithi Roy and published by . This book was released on 2014 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal contributes to almost forty percent of global power generation. As conventional coal-fired power generation technologies result in large CO2 emission, the pursuit for new technologies focuses on either reducing CO2 emission or that allows easier capture of the emitted CO2 from coal-fired power plants. Oxy-fuel fluidized bed (Oxy-FB) combustion is one such technology due to its ability to produce concentrated CO2 stream in the flue gas. This concentrated CO2 allows easier capture for subsequent transportation and storage. Other important benefits of this technology are the potential for using any type of fuel, and the ability to control SO2 and NOX emissions. Despite its perceived advantages over conventional technologies, very little is known about the applicability of Oxy-FB for brown coal. Brown coal accounts for 91% of Victoria's current electricity needs. Since Victoria has an estimated reserve of over 500 years of brown coal at the current consumption rate, successful application of Oxy-FB can potentially result in environment friendly power generation in Victoria. This first-ever study investigates the Oxy-FB combustion using Victorian brown coal in a combined experimental and modelling approach. The research involves designing and commissioning of a 10 kWth fluidized bed rig, carrying out experiments in laboratory scale and bench scale equipment, and performing thermodynamic and process modelling.Laboratory scale experiments using single char particle were conducted to investigate the combustion characteristics of individual and large char particle under Oxy-FB conditions. Particle temperature was observed to be higher compared to bed temperature. Up to 48°C difference was noticed between the char particle temperature and the bed temperature using 15% (v/v) steam in oxy-fuel combustion atmosphere. The temperature of the char particle during Oxy-FB combustion has practical implication for agglomeration.The bench scale experiments were carried out to evaluate combustion efficiency, agglomeration characteristics, sulphation characteristics, carbonation characteristics, NOX (NO, NO2 and N2O) emission, SOX (SO2 and SO3) emission, and trace elements (Hg, Se, As and Cr) emissions during Oxy-FB combustion of Victorian brown coal. A high level of CO2 concentration (90-94% in dry flue gas), over 99% combustion efficiency and no bed agglomeration under oxy-fuel combustion conditions including those with the addition of steam at temperatures between 800°C and 900°C. Moreover, the measured NOX and SOX concentration levels in the flue gas are within the permissible limits for coal-fired power plants in Victoria. This implies that additional NOX and SOX removal systems may not be required with Oxy-FB combustion of Victorian brown coal. The gaseous mercury concentrations, however, are considerably higher under oxy-fuel combustion compared to air combustion suggesting that mercury removal system may be required to avoid corrosion in the CO2 separation units if CO2 capture and transportation is intended. These conventional pollutants and trace elements emission characteristics are of great importance for the design of the gas cleaning systems for CO2 capture and storage (CCS) purposes. Furthermore, these results also provide information for selecting the optimum operating condition.Thermodynamic equilibrium modelling was carried out to predict the compounds formed during the combustion of Victorian brown coal under different Oxy-FB combustion conditions. It was predicted that the amount of toxic gaseous Cr6+ species was greater for oxy-fuel combustion than for air combustion. The distribution of toxic Se4+ species, however, remained almost the same in both combustion conditions within the typical temperature range for Oxy-FB combustion (800 - 950°C). A process model on Oxy-FB combustion using Aspen Plus was also developed to predict combustion performance of any coal during Oxy-FB. It was observed that the concentrations of CO and SO2 were higher in the lower dense region of the bed. These levels, however, dropped significantly with the introduction of secondary oxygen. The simulation results were consistent with the experimental data. Overall, this thesis has identified several important issues, for the first time, on Oxy-FB combustion using brown coal. The information generated is useful for academics, industry and policy makers. Future research on Oxy-FB combustion can use the findings of this study while developing Oxy-FB combustion for brown coals.

Download or read book Combustion of Tomorrow s Fuels written by and published by . This book was released on 1988 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Science of Victorian Brown Coal written by R.A. Durie and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Science of Victorian Brown Coal provides extensive information on Victorian brown coal, which is a major fossil fuel resource by any standard and constitutes about 97% of Victoria's recoverable energy reserves. Energy from brown coal has been the mainstay of the Victorian economy, providing low-cost electricity to the state grid, briquettes as a fuel for industry and town gas prior to the discovery of natural gas. Because of the unique properties of the coal, it has been necessary to develop an in-depth scientific knowledge of the coal and its behavior, as well as innovative technologies for its effective utilization. The economic benefit brown coal has provided to Victoria is demonstrated throughout the chapters. This book aims to provide the springboard for further research and lead to a new era in the development of value-added products and the more efficient utilization of this major resource. This text is a useful reference for students or individuals conducting research on fossil fuel energy, specifically on brown coals.

Download or read book Clean Combustion of Brown Coal and Lignite written by United Nations. Economic Commission for Europe and published by . This book was released on 1990 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atmospheric Fluidized Bed Coal Combustion written by M. Valk and published by Elsevier Science & Technology. This book was released on 1995 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fluidized bed coal combustion technology has been developed in the past decade in The Netherlands with a view to expanding the industrial use of coal as an energy supply. Various research groups from universities, institutes for applied science and from boiler industries participated and contributed to this research area. Comprehensive results of such recent experimentation and development work on atmospheric fluidized bed combustion of coal are covered in this volume. Each chapter, written by an expert, treats one specific subject and gives both the theoretical background as well as experimental results and verifications.Though the contents deal primarily with coal combustion, much information proved applicable and relevant for the combustion or incineration of other solid fuels and waste in a fluidized bed. Results of extended research and fundamental backgrounds are presented in order to provide the designer and operator of fluidized bed combustors with more complete and systematic information needed for an optimal design and operation. The design and operating experience of a full scale fluidized bed boiler are discussed and compared with the results of theoretical and experimental research on pilot plant scale.

Download or read book Coal Combustion written by Jerzy Tomeczek and published by . This book was released on 1994 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explains the combustion phenomena of a single coal particle and of coal particles in pulverised flames and fluidised beds. The state of knowledge regarding the combustion mechanism, and the implications for combustion equipment design, are reviewed.

Download or read book Fluidized Bed Combustion of Coal and Waste Materials written by Lee Yaverbaum and published by William Andrew. This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fluidised Combustion of Brown Coal written by J. E. Williams and published by . This book was released on 1984 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heating of Coal Particles in Fluidized Bed Combustion written by A. Jensen and published by . This book was released on 1991 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ignition and Combustion of Pulverised Brown Coal Particles written by Anthony John Stevenson and published by . This book was released on 1972 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Low rank Coals for Power Generation Fuel and Chemical Production written by Zhongyang Luo and published by Woodhead Publishing. This book was released on 2017-06-22 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-Rank Coals for Power Generation, Fuel and Chemical Production provides a thorough introduction to lignite (brown coal) and subbituminous coals and explores how they can be used efficiently and economically in place of hard coal. The book examines the undesirable characteristics of low-quality coals, such as high moisture content, low calorific value, and aggressive ash characteristics, and the resulting refinements to standard technologies and practices required for successful combustion, gasification, and pyrolysis.The first part of this book provides a comprehensive and systematic review of the properties of low-rank coals and corresponding preparation methods, such as drying, cleaning, and upgrading. Power generation from low-rank coals is the focus of Part 2, with chapter topics ranging from high efficiency pulverized coal combustion and circulatingfluidized bed combustion to emerging areas such as chemical looping and oxyfuel combustion. The final contributions address the important subjects of coal-to-liquids,polygeneration and coke production using low-rank coals, as well as the critical issue of carbon capture and storage.This book is a valuable resource for power generation engineers and researchers seeking to maximize the opportunities provided by these cheaper coal feedstocks for efficient and environmentally compatible power generation. - Presents the most in-depth treatment of low-rank coals available - Addresses both power generation and fuel production - Includes coverage that spans pulverized coal combustion and emerging technologies, such as CFBC, UCG, CLC, and oxyfuel combustion

Download or read book Fundamentals of Coal Combustion written by Leon Douglas Smoot and published by Elsevier Publishing Company. This book was released on 1993 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a broad, integrated treatment of the fundamentals of coal combustion and gasification. Most of the authors are recognized professionals in the field and all are conducting research work in the Advanced Combustion Engineering Research Center. The focus of the book is on clean and efficient use of coal. Practical chapters on coal processes, including coal technology projects and on acid rain formation control, lay a foundation for the fundamental treatment. The book is comprehensive in its treatment with over 1000 world-wide references, most of which are from the past five years.

Download or read book How to Burn Coal Efficiently and Economically and Meet Air Pollution Requirements the Fluidized bed Combustion Process written by United States. General Accounting Office and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Highlights of Studies on Fluidized bed Combustion of Coal 1977 written by Argonne National Laboratory. Chemical Engineering Division and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cleaner Combustion and Sustainable World written by Haiying Qi and published by Springer Science & Business Media. This book was released on 2012-11-19 with total page 1306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cleaner Combustion and Sustainable World is the proceedings of the 7th International Symposium on Coal Combustion which has a significant international influence. It concerns basic research on coal combustion and clean utilization, techniques and equipments of pulverized coal combustion, techniques and equipments of fluidized bed combustion, basic research and techniques of emission control, basic research and application techniques of carbon capture and storage (CCS), etc. Professor Haiying Qi and Bo Zhao both work at the Tsinghua University, China