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Author : Ari Jokilaakso
Publisher :
ISBN 13 : 9789512220526
Total Pages : pages
Book Rating : 4.2/5 (25 download)
Download or read book Ignition and Kinetics of Pulverised Coal Combustion written by Ari Jokilaakso and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vadim Eugenievich Banin
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.0/5 ( download)
Download or read book Shock Tube Research on Kinetics of Pulverised Coal Particles Combustion and Ignition written by Vadim Eugenievich Banin and published by . This book was released on 1994 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L Lahaye
Publisher : Springer Science & Business Media
ISBN 13 : 9400936613
Total Pages : 505 pages
Book Rating : 4.4/5 (9 download)
Download or read book Fundamentals of the Physical-Chemistry of Pulverized Coal Combustion written by L Lahaye and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of coal for the production of energy is certainly not a new area of research. Many research works were carried out to improve the efficiency of industrial and domestic facilities. In the sixties, however, because of the availability and low cost of petroleum, coal consumption decreased and the research effort in this area was minimum. Meanwhile, the situation has totally changed. Considering the reserves of oil and the instability ofregions where they are located, it is becoming absolutely necessary to develop other sources of energy.The major alternative to oil appears to be coal, at least for the near future. Indeed, the reserves known today represent several centuries of energy consumption.!t is therefore becoming urgent to develop efficient and non polluting technologies to produce energy from coal. The main possibilities are : · liquefaction · gasification · directed combustion. Research and development efforts on liquefaction have been considerably reduced because of high cost of technologies involved and poor prospects for the next two decades. Research works on gasification are progressing; it is a promising approach. However, direct combustion either in pulverized coal furnaces or in fluidized beds is the more promising way of expanding rapidly the utilization of coal. These techniques are already used in some facilities but many environmental problems remain, slowing down their development.
Author : Sylvie Honnet
Publisher : Cuvillier Verlag
ISBN 13 : 386727391X
Total Pages : 147 pages
Book Rating : 4.8/5 (672 download)
Download or read book Detailed and Reduced Kinetic Mechanisms in Low-emission Combustion Processes written by Sylvie Honnet and published by Cuvillier Verlag. This book was released on 2007 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dobrin Toporov
Publisher : Elsevier
ISBN 13 : 0081000049
Total Pages : 199 pages
Book Rating : 4.0/5 (81 download)
Download or read book Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas written by Dobrin Toporov and published by Elsevier. This book was released on 2014-05-30 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas focuses on a niche technology, combustion of coal in an oxygen rich environment, which is one approach to obtaining 'clean coal,' by making it easier to capture carbon that is released in the combustion process. Toporov's book breaks ground on covering the key fundamentals of oxycoal technologies, which have not yet been covered in this depth. Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas summarizes the main results from a pioneering work on experimental and numerical investigations of oxyfuel technologies. It provides the theoretical background of the process, the problems to be faced, and the technical solutions that were achieved during these investigations. - Summarizes results from investigations of oxyfuel technologies performed at Aachen University, Germany - Provides theoretical background, as well as the primary problems of these technologies and how they can be solved
Author : L.Douglas Smoot
Publisher : Springer Science & Business Media
ISBN 13 : 1475797214
Total Pages : 450 pages
Book Rating : 4.4/5 (757 download)
Download or read book Coal Combustion and Gasification written by L.Douglas Smoot and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of coal is required to help satisfy the world's energy needs. Yet coal is a difficult fossil fuel to consume efficiently and cleanly. We believe that its clean and efficient use can be increased through improved technology based on a thorough understanding of fundamental physical and chemical processes that occur during consumption. The principal objective of this book is to provide a current summary of this technology. The past technology for describing and analyzing coal furnaces and combus tors has relied largely on empirical inputs for the complex flow and chemical reactions that occur while more formally treating the heat-transfer effects. GrOWing concern over control of combustion-generated air pollutants revealed a lack of understanding of the relevant fundamental physical and chemical mechanisms. Recent technical advances in computer speed and storage capacity, and in numerical prediction of recirculating turbulent flows, two-phase flows, and flows with chemical reaction have opened new opportunities for describing and modeling such complex combustion systems in greater detail. We believe that most of the requisite component models to permit a more fundamental description of coal combustion processes are available. At the same time there is worldwide interest in the use of coal, and progress in modeling of coal reaction processes has been steady.
Author : William Randall Seeker
Publisher :
ISBN 13 :
Total Pages : 386 pages
Book Rating : 4.:/5 (58 download)
Download or read book The Kinetics of Ignition and Particle Burnout of Coal Dust Suspensions Under Rapid Heating Conditions written by William Randall Seeker and published by . This book was released on 1979 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jerzy Tomeczek
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.X/5 (2 download)
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.
Author : Frank T. Green
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (222 download)
Download or read book Investigation of Fundamental Kinetics in Pulverized Coal Combustion written by Frank T. Green and published by . This book was released on with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. Williams
Publisher : Routledge
ISBN 13 : 1351459678
Total Pages : 271 pages
Book Rating : 4.3/5 (514 download)
Download or read book Combustion and Gasification of Coal written by A. Williams and published by Routledge. This book was released on 2018-12-19 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incuding an overview of two of the most common uses of coal: combustion and gasification. First, it outlines problems and possible solutions, and then the nature of coal is described. The book goes on to describe the technical aspects of combustion of pulverized coal and the combustion mechanism of coal in fixed, moving, and fluidized beds. Industrial coal combustion applications are then outlined, together with other combustion applications, including co-firing, coal-water, slurries, and briquettes. Finally, gasification of coal, a possible major clean coal technology of the future, is discussed.
Author : Stanley Singer
Publisher : William Andrew
ISBN 13 :
Total Pages : 200 pages
Book Rating : 4.3/5 (91 download)
Download or read book Pulverized Coal Combustion written by Stanley Singer and published by William Andrew. This book was released on 1984 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ye Yuan
Publisher : Springer
ISBN 13 : 9811048134
Total Pages : 151 pages
Book Rating : 4.8/5 (11 download)
Download or read book Optic Diagnostics on Pulverized Coal Particles Combustion Dynamics and Alkali Metal Release Behavior written by Ye Yuan and published by Springer. This book was released on 2019-02-15 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on pulverized coal particle devolatilization, ignition, alkali metal release behavior, and burnout temperature using several novel optic diagnostic methods on a Hencken multi-flat flame burner. Firstly, it presents a novel multi-filter technique to detect the CH* signal during coal ignition, which can be used to characterize the volatile release and reaction process. It then offers observations on the prevalent transition from heterogeneous ignition to hetero-homogeneous ignition due to ambient temperature based on visible light signal diagnostics. By utilizing the gap between the excitation energies of the gas and particle phases, a new low-intensity laser-induced breakdown spectroscopy (PS-LIBS) is developed to identify the presence of sodium in the particle or gas phase along the combustion process. For the first time, the in-situ verification of the gas phase Na release accompanying coal devolatilization is fulfilled when the ambient temperature is high enough. In fact, particle temperature plays a vital role in the coal burnout process and ash particle formation. The last part of the book uses RGB color pyrometry and the CBK model to study the char particle temperature on a Hencken burner. It offers readers valuable information on the technique of coal ignition and combustion diagnostics as well as coal combustion characteristics.
Author : Dragisa Ristic
Publisher : Cuvillier Verlag
ISBN 13 : 3736942605
Total Pages : 144 pages
Book Rating : 4.7/5 (369 download)
Download or read book Feasibility and NOx Reduction Potential of Flameless Oxidation in Pulverised Coal Combustion written by Dragisa Ristic and published by Cuvillier Verlag. This book was released on 2012-10-30 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1990, the flameless oxidation technology has been successfully proven as low-NOx combustion technology for gaseous hydrocarbon fuels, and the recent application of this technology to solid fuels such as pulverised coal has also become an area of interest. The objective of this thesis is to evaluate the feasibility and the potential of the flameless oxidation technology in the pulverised coal combustion. Firstly, the experimental studies on pulverised coal flameless oxidation process are conducted at a bench-scale test facility (5 to 10 kWth). In the next step, a suitable burner design in a pilot scale of approximately 300 kWth is developed, built up and experimentally studied. Detailed exhaust gas and inflame measurements of the temperature and, main species are carried out in order to address the specific aspects of pulverised coal flameless oxidation. Furthermore, to indicate the relevant NOx reduction mechanisms in the pulverised coal flameless oxidation process. In contrast to the conventional pulverised coal combustion, which has luminous and aerodynamically stabilised flames, the flameless oxidation combustion process has been achieved without a clearly visible flame. In the pulverised coal flameless oxidation mode, intensive internal recirculation is enhanced by a high injection velocity of the combustion air, and thus dilutes the combustion zone and heats up the coal particles in the primary pyrolysis zone. Once the coal particles are rapidly heated up, the processes of pyrolysis and volatile matter release are facilitated. Consequently, local reducing zone is formed, devolatilisation is enhanced, ignition delay is suppressed, combustion stability is improved and NOx emissions are reduced remarkably. A high internal recirculation of the oxygen-lean hot combustion products into the primary pyrolysis zone promotes an early devolatilisation and a decrease in ignition delay, which are two important factors for NOx reduction processes. Hence, a valuable potential of pulverised coal flameless oxidation is in the improved homogeneous gas phase kinetics and an enhanced homogeneous NO reburning mechanism. Besides NO reduction in the homogeneous gas phase, it is indicated that the NO reduction on the char surface in the heterogeneous and homogeneous gas phases is important as well, i.e. char NO reduction reaction and catalytic reduction of NO by CO on the char surface, in the pulverised coal flameless oxidation. As an overall conclusion, the PC FLOXTM (Pulverised Coal Flameless Oxidation) burner technology generally is evaluated as a perspective technology to provide low cost low NOx burners for utility boilers. Moreover, the PC FLOXTM burner technology offers the possibility of a lower cost alternative to the current approach of utilising SCR to enable power plants to meet current and future specific requirements on NOx emissions. However, despite all the advantages of this technology, it has been recognised that there are considerable technical challenges to the implementation of PC FLOXTM burners in utility boilers. High pressure loss in the main combustion air supply, boiler and burner design, arrangement of burners, start-up and shutdown procedures, etc. all require significant further work in order to bring the PC FLOXTM burner technology closer to the utility scale boilers.
Download or read book Numerical Simulation of Ignition in Pulverized Coal Combustion with Detailed Chemical Reaction Mechanism written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dominik Christ
Publisher :
ISBN 13 : 9783868445596
Total Pages : 306 pages
Book Rating : 4.4/5 (455 download)
Download or read book The Effect of Char Kinetics on the Combustion of Pulverized Coal Under Oxyfuel Conditions written by Dominik Christ and published by . This book was released on 2013 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhangfa Wu
Publisher :
ISBN 13 : 9789290294108
Total Pages : 36 pages
Book Rating : 4.2/5 (941 download)
Download or read book Fundamentals of Pulverised Coal Combustion written by Zhangfa Wu and published by . This book was released on 2005-01-01 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Smoot
Publisher : Springer Science & Business Media
ISBN 13 : 1475716966
Total Pages : 336 pages
Book Rating : 4.4/5 (757 download)
Download or read book Pulverized-Coal Combustion and Gasification written by L. Smoot and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: viii and approaches could be adapted to other coal conversion and combustion problems, we have not considered combustion or gasification in fluidized or fixed beds or in situ processes. In addition, we have not considered other fossil-fuel combustion problems associated with oil shale, tar sands, etc., even though many aspects of pulverized-coal combustion would relate to these problems. For the case of pulverized-coal models, we have attempted to provide a detailed description of the model foundations. Parts I and II of this book emphasize general principles for describing reacting, turbulent or laminar, multiphase systems. General conservation equations are developed and summarized. The basis for computing thermochemical equilibrium in complex, heterogeneous mixtures is presented, together with techniques for rapid computation and reference to required input data. Rate processes are then discussed, including pertinent aspects of turbulence, chemical kinetics, radiative heat transfer, and gas-particle convective-diffusive interactions. Much of Part II deals with parameters and coefficients for describing these complex rate processes. This part of the book provides recommended values of coefficients and parameters for treating complex reacting flows. Parts I and II may well be suitable for use in an advanced course in reacting flows, and have been written partly with that in mind. Part III deals with more specific aspects of pulverized-coal characteristics and rate processes. Following a general description of coal structure and constitution, coal pyrolysis and char oxidation processes are considered.
