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Laboratory Studies Of Ash Deposit Formation During The Combustion Of Western Us Coals
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Book Synopsis Laboratory Studies of Ash Deposit Formation During the Combustion of Western U.S. Coals by : Steven Allan Benson
Download or read book Laboratory Studies of Ash Deposit Formation During the Combustion of Western U.S. Coals written by Steven Allan Benson and published by . This book was released on 1987 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Effects of Western Coal Combustion: Chemical and physical characteristics of coal fly ash by : Allen A. Elser
Download or read book Environmental Effects of Western Coal Combustion: Chemical and physical characteristics of coal fly ash written by Allen A. Elser and published by . This book was released on 1978 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Mineral Transformations and Ash Deposition During Staged Combustion. Quarterly Technical Progress Report, October 1, 1993--December 31, 1993 by :
Download or read book Investigation of Mineral Transformations and Ash Deposition During Staged Combustion. Quarterly Technical Progress Report, October 1, 1993--December 31, 1993 written by and published by . This book was released on 1994 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A thorough understanding of the fundamental processes which govern the mineral behavior is essential to the development of tools to predict and manage ash deposition. The purpose of the current project is to perform a fundamental study of mineral transformations and ash deposition during staged combustion of pulverized coal. Staging of combustion air is a strategy used to reduce NO(subscript x) emissions from coal-fired units. It is applicable to both advanced combustion systems currently under development (e.g. HITAF) and low NO(subscript x) retrofits for existing units. These low NO(subscript x) combustion strategies produce fuel rich or reducing conditions in the lower furnace. Therefore, the combustion history of the coal particles is significantly changed from that experienced under normal combustion conditions. A carefully designed experimental study is needed to examine the effects of altered combustion conditions on mineral matter release, fly ash formation, particle stickiness and deposit formation. This project uses state-of-the-art analytical equipment and a well-characterized laboratory combustor to address this need. This report describes work in the initial quarter of a fundamental, three-year study of mineral transformations and ash deposition during staged combustion.
Book Synopsis The Impact Of Ash Deposition On Coal Fired Plants by : Jim Williamson
Download or read book The Impact Of Ash Deposition On Coal Fired Plants written by Jim Williamson and published by Taylor & Francis. This book was released on 2022-10-12 with total page 1103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal provides almost 40% of the world's electricity, and despite the understandable concern with respect to the environmental impact associated with coal use, forecasts from the International Energy Agency predict, that worldwide coal use will increase by up to 2% per annum until the year 2OlO. Faced with this increase, it is clearly important that the most efficient and environmentally acceptable clean coal technologies are available. This book is comprised of the proceedings of the Engineering Foundation Conference held in June 1993 in England. The objective of the conference was to present ideas on methods of predicting and reducing the effects of ash deposition in coal conversion systems, highlighting the problems experienced in industry, considering both utilities and industrial plants, and providing a view of the technology of coal ash deposition and its impact. Better techniques are needed to reduce the impact of ash deposition in coal fired plants, and these proceedings should form a reference document for anyone either experiencing slagging or actively engaged in trying to understand or eliminate the phenomenon.
Book Synopsis The Impact Of Ash Deposition On Coal Fired Plants by : Jim Williamson
Download or read book The Impact Of Ash Deposition On Coal Fired Plants written by Jim Williamson and published by CRC Press. This book was released on 1994-06-01 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the Engineering Foundation Conference held in June 1993 in England. The conference aim was to present ideas on methods of predicting and reducing the effects of ash deposition in coal conversion systems and provide a view of the technology of coal ash deposition and its impact.
Book Synopsis Investigation of Mineral Transformation and Ash Deposition During Staged Combustion. Final Report, October 1, 1993--September 30, 1997 by :
Download or read book Investigation of Mineral Transformation and Ash Deposition During Staged Combustion. Final Report, October 1, 1993--September 30, 1997 written by and published by . This book was released on 1997 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this report is to document a recently completed four-year study to examine the impact of low-NOx firing technologies on ash formation and deposition while firing pulverized coal. Low-NOx burners and staged combustion inhibit NOx formation by restricting the amount of oxygen available to form a fuel-rich zone in which nitrogen compounds are reduced to molecular nitrogen (N2) rather than oxidized. Additional oxygen is provided downstream for complete combustion. Consequently, coal and mineral particles encounter different temperatures and oxygen concentrations when they are burned under low-NOx firing conditions than they do in conventionally-fired units. Two coals with distinctly different inorganic contents and ash characteristics were fired in a pilot-scale laboratory combustor under both conventional and staged combustion conditions. Ash and deposit samples were collected at various locations in the reactor and analyzed in order to assess the influence of staged combustion. This report is organized as follows. First, a background section provides the foundation needed in order to understand the motivation for and the results of the experimental program. The next section presents a description of the experimental apparatus and procedures, including the development the analytical methods critical to the study. Results of the analyses of coal, ash and deposit samples are then presented and discussed for each of the two coals. Finally, the report ends with a short summary and statement of conclusions.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fusibility of Ash Coals of the United States by : Walter Alfred Selvig
Download or read book Fusibility of Ash Coals of the United States written by Walter Alfred Selvig and published by . This book was released on 1922 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Livres anciens, romantiques et modernes by :
Download or read book Livres anciens, romantiques et modernes written by and published by . This book was released on 1956 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Mechanisms of Ash Deposit Formation from Low-rank Coal Combustion by :
Download or read book Investigation of Mechanisms of Ash Deposit Formation from Low-rank Coal Combustion written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This project was undertaken to determine the chemical behavior of alkali metal and other species implicated in the ash fouling which can occur during the combustion of low rank coals. The coal combustion was studied in unaugmented premixed pulverized coal flames. Vapor species were measured by molecular beam mass spectrometry. Temperatures were also measured, and time-resolved coal/ash particulate samples were collected and analyzed. A major part of the research on this project was devoted to: (1) the development and refinement of techniques for the MBMS analysis of trace quantities of unstable and reactive high temperature vapor species from the pulverized coal flames; and (2) the time-resolved sampling and collection of particulates. The equipment is now operating very satisfactorily. Inorganic species, some of which were present at parts-per-million levels, were quantitatively sampled and measured in the pulverized coal flames. Time-resolved particulate samples which were free of vapor deposited contaminants were collected without the use of an interfering substrate. Profiles of the alkali metal species in Beulah lignite and Decker subbituminous coal flames were obtained. It was found in both flames that sodium is volatilized as the atomic species early (milliseconds) in the combustion process. The gaseous Na reacts, also in milliseconds, to form an unknown species which is probably an oxide fume, but which is not NaOH or Na2SO4. This is probably the mechanism for the formation of the alkali ''fumes'' observed in other systems. Measurements were also made of a number of other gaseous species, and time-resolved coal/ash samples were obtained and analyzed. 27 refs., 23 figs., 8 tabs.
Book Synopsis Environmental Effects of Western Coal Combustion: Chemical and physical characteristics of coal fly ash by :
Download or read book Environmental Effects of Western Coal Combustion: Chemical and physical characteristics of coal fly ash written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developments in Thermochemical Biomass Conversion by : A.V. Bridgwater
Download or read book Developments in Thermochemical Biomass Conversion written by A.V. Bridgwater and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 1630 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been many developments in the science and technology of thermo chemical biomass conversion since the previous conference on Advances in Thermochemical Biomass Conversion in Interlaken, Switzerland, in 1992. This fourth conference again covers all aspects of thermal biomass conversion systems from fundamental research through applied research and development to demon stration and commercial applications to reflect the progress made in the last four years. All aspects of bioenergy systems are covered from pretreatment through to end-user applications with increased consideration paid to the environmental benefits and problems of implementing bio-energy systems. There was an excellent response with over 200 papers offered and over 180 delegates from 29 countries attending the conference. The programme was divided into five main areas covering pyrolysis, pretreatment, gasification, combustion and system studies and this division is reflected in the structure of these conference proceedings. Each main section was preceded by a state-of-the-art review to provide a focus for the ensuing presentations and an authoritative reference. All the papers included have been subject to a full peer review process. As with any international conference, an important aim was to exchange ideas and discuss problems with fellow researchers, as well as to hear about the latest research and development and applications. A workshop programme was included to encourage this interaction in areas of interest selected by participants. The resul tant workshop reports provide a summary of topical problems and opportunities.
Book Synopsis Combustion Tests on a Specially Processed Low-ash Low-sulphur Coal by : W. L. Sage
Download or read book Combustion Tests on a Specially Processed Low-ash Low-sulphur Coal written by W. L. Sage and published by . This book was released on 1964 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mineral Matter and Ash Deposition from Coal by :
Download or read book Mineral Matter and Ash Deposition from Coal written by and published by . This book was released on 1990 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Mineral Transformations and Ash Deposition During Staged Combustion. Quarterly Technical Progress Report, July 1, 1995-- September 30, 1995 by :
Download or read book Investigation of Mineral Transformations and Ash Deposition During Staged Combustion. Quarterly Technical Progress Report, July 1, 1995-- September 30, 1995 written by and published by . This book was released on 1995 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress during the eighth quarter of a three-year study was made in three task areas: (1) analysis of coals; (3) parametric testing of the target coals, and (4) analysis of samples from the combustion tests. Routines for automated analysis of coal and mineral associations were completed and are now functional on our new ISIS system. Work on data processing which led to the development of a new means of interpreting composition information from the SEM was also completed during the quarter. This work is expected to yield substantial benefits in understanding the ash transformations during combustion. Several additional ash and deposit samples were collected this quarter. Deposition results have been explained qualitatively and samples has been mounted for quantitative analysis. A detailed characterization of mixing and coalescence was performed during the quarter. Results indicate that combustion under stage conditions does not change the chemistry of the final ash produced. Specifically, both iron and potassium distributions in long residence time ashes did not change as a function of combustion conditions. Some differences were observed in the potassium distribution at shorter residence times. There was also a difference in the size distribution of particles formed during staged combustion. The nature and significance of these differences are still under investigation.
Download or read book Coal Abstracts written by and published by . This book was released on 1993 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Coal Combustion by : Leon Douglas Smoot
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.
