Download or read book Kinetics and Mechanisms of NO subscript X Char Reduction Quarterly Technical Progress Report May 1 1995 July 31 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: The emission of nitrogen oxides from combustion of coal remains a problem of considerable interest, whether the concern is with acid rain, stratospheric ozone chemistry, or {open_quotes}greenhouse{close_quotes} gases. Whereas earlier the concern was focused mainly on NO (as a primary combustion product) and to a lesser extent NO2 (since it is mainly a secondary product of combustion), in recent years the emissions of N2O have also captured considerable attention, particularly in the context of fluidized bed combustion, in which the problem appears to be most acute. The research community has only recently begun to take solid hold on the N2O problem. This is in part because earlier estimates of the importance of N2O in combustion processes were clouded by artifacts in sampling which have now been resolved. This project is concerned with the mechanism of reduction of both NO and N2O by carbons. It was recognized some years ago that NO formed during fluidized bed coal combustion can be heterogeneously reduced in-situ by the carbonaceous solid intermediates of combustion. This has been recently supplemented by the knowledge that heterogeneous reaction with carbon can also play an important role in reducing emissions of N2O, but that the NO-carbon reactions might also contribute to formation of N2O. The precise role of carbon in N2O reduction and formation has yet to be established, since in one case the authors of a recent study were compelled to comment that {open_quotes}the basic knowledge of N2O formation and reduction still has to be improved{close_quotes}. The same can be said of the NO-carbon system. In this program, carbons studied include graphite, resin char, coconut char, and a Wyodak coal char.
Download or read book Kinetics and Mechanisms of NOx Char Reduction Quarterly Technical Progress Report August 1 1995 October 31 1995 written by and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emission of nitrogen oxides from combustion of coal remains a problem of considerable interest, whether the concern is with acid rain, stratospheric ozone chemistry, or {open_quotes}greenhouse{close_quotes} gases. Whereas earlier the concern was focused mainly on NO (as a primary combustion product) and to a lesser extent NO2 (since it is mainly a secondary product of combustion), in recent years the emissions of N2O have also captured considerable attention, particularly in the context of fluidized bed combustion, in which the problem appears to be most acute. The research community has only recently begun to take solid hold on the N2O problem. This is in part because earlier estimates of the importance of N2O in combustion processes were clouded by artifacts in sampling which have now been resolved. This project is concerned with the mechanism of reduction of both NO and N2O by carbons. It was recognized some years ago that NO formed during fluidized bed coal combustion can be heterogeneously reduced in-situ by the carbonaceous solid intermediates of combustions. This has been recently supplemented by the knowledge that heterogeneous reaction with carbon can also play an important role in reducing emissions of N2O, but that the NO-carbon reactions might also contribute to formation of N2O. The precise role of carbon in N2O reduction and formation has yet to be established, since in one case the authors of a recent study were compelled to comment that the basic knowledge of N2O formation and reduction still has to be improved. The same can be said of the NO-carbon system.
Download or read book Fluidized Bed Combustion written by Simeon Oka and published by CRC Press. This book was released on 2003-09-16 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: A realization of recent clean energy initiatives, fluidized bed combustion (FBC) has quickly won industry preference due to its ability to burn materials as diverse as low-grade coals, biomass, and industrial and municipal waste. Fluidized Bed Combustion catalogs the fundamental physical and chemical processes required of bubbling fluidized beds before launching into application-centered coverage of hot-gas generator, incinerator, and boiler concepts and design, calculations for regime parameters and dimensions, and all aspects of FBC operation. It enumerates the environmental consequences of fluidized bed processes and proposes measures to reduce the formation of harmful emissions.
Download or read book A Plan for the Union of British North America and the United States 1866 written by Theodore Christian Blegen and published by . This book was released on 1918 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics and Mechanisms of NOx Char Reduction Quarterly Technical Progress Report 1 August 1996 31 October 1996 written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emission of nitrogen oxides from combustion of coal remains a problem of considerable interest, whether the concern is with acid rain, stratospheric ozone chemistry, or {open_quotes}greenhouse{close_quotes} gases. Whereas earlier the concern was focused mainly on NO (as a primary combustion product) and to a lesser extent NO2, in recent years the emissions of N2O have also captured considerable attention, particularly in the context of fluidized bed combustion, in which the problem appears to be most acute. The research community has only recently begun to take solid hold on the N2O problem. This is in part because earlier estimates of the importance of N2O in combustion processes were clouded by artifacts in sampling which have now been resolved. This project is concerned with the mechanism of reduction of both NO and N2O by carbons.
Download or read book Gozos al glorioso S Mauro M rtir Romano segun se cantan en la capilla del Real Colegio de Corpus Christi de Valencia en donde se venera el cuerpo de dicho Santo patr n del mismo Real Colegio written by and published by . This book was released on 1830 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics and Mechanisms of NO subscript X Char Reduction Quarterly Technical Progress Report 1 May 1996 31 July 1996 written by and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emission of nitrogen oxides from combustion of coal remains a problem of considerable interest, whether the concern is with acid rain, stratospheric ozone chemistry, or {open_quotes}greenhouse{close_quotes} gases. Whereas earlier the concern was focused mainly on NO (as a primary combustion product) and to a lesser extent NO2, in recent years the emissions of N2O have also captured considerable attention, particularly in the context of fluidized bed combustion, in which the problem appears to be most acute. The research community has only recently begun to take solid hold on the N2O problem. This is in part because earlier estimates of the importance of N2O in combustion processes were clouded by artifacts in sampling which have now been resolved. This project is concerned with the mechanism of reduction of both NO and N2O by carbons.
Download or read book Combustion and Gasification in Fluidized Beds written by Prabir Basu and published by CRC Press. This book was released on 2006-02-17 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Besides being one of the best Clean Coal Technologies, fluidized beds are also proving to be the most practical option for biomass conversion. Although the technology is well established, the field lacks a comprehensive guide to the design and operating principles of fluidized bed boilers and gasifiers. With more than 30 years of research and indus
Download or read book NOx N2O SO2 reduction in fluidised bed combustion of coal and char written by D. G. Gavin and published by . This book was released on 1994 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrogen oxides NOx why and how they are controlled written by and published by DIANE Publishing. This book was released on 1999 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kinetics and Mechanisms of NO x Char Reduction written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The emission of nitrogen oxides from combustion of coal remains a problem of considerable interest, whether the concern is with acid rain, stratospheric ozone chemistry, or greenhouse gases. Whereas earlier the concern was focused mainly on NO (as a primary combustion product) and to a lesser extent N0[sub 2] (since it is mainly a secondary product of combustion, e.g. see ref. 1), in recent years the emissions of N[sub 2]0 have also captured considerable attention, particularly in the context of fluidized bed combustion, in which the problem appears to be most acute. The research community has only recently begun to take solid hold on the N[sub 2]0 problem. This is in part because earlier estimates of the importance of N[sub 2]0 in combustion processes were clouded by artifacts in sampling which have now been resolved. This project is concerned with the mechanism of reduction of both NO and N[sub 2]0 by carbons. It was recognized some years ago that NO formed during fluidized bed coal combustion can be heterogeneously reduced in-situ by the carbonaceous solid intermediates of combustion. This has been recently supplemented by the knowledge that heterogeneous reaction with carbon can also play an important role in reducing emissions of N[sub 2]0[sub 2], but that the NO-carbon reactions might also contribute to formation of N[sub 2]0[sub 2]. The precise role of carbon in N[sub 2]0 reduction and formation has yet to be established, since in one case the authors of a recent study were compelled to comment that the basic knowledge of N[sub 2]0 formation and reduction still has to be improved. The same can be said of the NO-carbon system. Interest in the NO- and N[sub 2]0-char reactions has been significant in connection with both combustor modeling, as well as in design of post-combustion NO[sub x] control strategies.
Download or read book Clean Coal Engineering Technology written by Bruce G. Miller and published by Butterworth-Heinemann. This book was released on 2016-09-30 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clean Coal Engineering Technology, Second Edition provides significant information on the major power generation technologies that aim to utilize coal more efficiently, and with less environmental impact. With increased coal combustion comes heightened concerns about coal's impacts on human health and climate change, so the book addresses the reduction of both carbon footprints and emissions of pollutants, such as particulate matter, nitrogen oxides, and mercury. Part 1 provides an essential grounding in the history of coal use alongside coal chemical and physical characteristics, worldwide distribution, and health and environmental impacts. Part 2 introduces the fundamentals of the major coal utilization technologies and examines the anatomy of a coal-fired power plant before going on to provide an overview of clean coal technologies for advanced power generation. Next, users will find a group of chapters on emissions and carbon management that have been extensively enlarged and updated for the second edition, thus reflecting the ever-increasing importance of this area. The final section of the book focuses on clean coal technology programs around the world and the future role of coal in the energy mix. This fully revised and selectively expanded new edition is a valuable resource for professionals, including environmental, chemical, and mechanical engineers who seek an authoritative and thorough one-volume overview of the latest advances in cleaner power production from coal. - Provides a thorough, yet readable, one-volume guide to advanced power generation technologies for cleaner electricity production from coal - Retains the essential background information on coal characteristics and the fundamentals of coal-fired power generation - Presents extensively expanded and updated coverage on technologies for the reduction of pollutants, including particulate matter, sulfur oxides, and mercury - Emphasizes carbon capture methods, storage, and emerging technologies for the reduction of carbon footprints, alongside a discussion of coal's future in the energy mix
Download or read book Air Pollution in the 21st Century written by T. Schneider and published by Elsevier. This book was released on 1999-03-12 with total page 1113 pages. Available in PDF, EPUB and Kindle. Book excerpt: This symposium was jointly organized by the United States Environmental Protection Agency and The Netherlands Ministry of Housing, Spatial Planning and the Environment. These proceedings will provide a stimulus for taking up the challenges of environmental policy development in the 21st century, and will contribute to continuing co-operation.Clean air is a basic condition for health. Air pollution aggravates respiratory problems, leading to increased sickness absenteeism, increased use of health care services and even premature mortality. Air pollution is under intensive discussion in the United States and Europe.In The Netherlands, a wide range of policy instruments have been formulated which have reduced air pollution. For example; since 1975, sulphur dioxide and lead emissions have been reduced. However, emission reduction figures for many other substances are more modest. Many air pollution problems persist because progress in countering these problems is nullified by growth in the economy and traffic. Another important target is the prevention of climate change. The international community is agreed that the increasing concentration of greenhouse gases in the atmosphere has led to a gradual increase in the earth's temperature. In terms of the environmental consequences and social implications, the greenhouse problem surpasses all other air quality problems.Across Europe, strategies are being developed to reduce acidification and photochemical air pollution. An air emission ceiling for each country in the European Union is being agreed. In the area of climate change, there is good co-operation between the United States, The Netherlands and other EU Members States in the ongoing global negotiations. This is the start of a new movement. In the last century economies and societies developed through increasing human productivity. In the next century they must develop through increasing the productivity of fuel and natural resources.
Download or read book Emissions of N2O and NOx from Fluidized Bed Combustion of Coal written by Mu Lin and published by . This book was released on 1998 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emissions Reduction written by A. Tomita and published by Elsevier. This book was released on 2001-12-18 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade the topic of emissions reduction and control has remained an important area of research due to the enforcement of various Government policies in an attempt to minimize the impact on the environment. One area in which a great deal of research has been conducted to address this policy is NOx/SOx suppression. However, despite the progress that has been made over this time period, further research into the most effective method of reducing NOx/SOx emissions is still urgently required. In developed countries, a more stringent requirement in the level of emissions (such as is NOx/SOx component of less than 10ppm) will be enforced in the near future. Developing countries will also need a new technology that is effective and that is suited to each countries needs. Additional research and development efforts are thus necessary to meet such requirements. This compendium contains a collection of key papers themed around NOx/SOx emissions from combustion of hydrocarbon resources and the attempts to secure an efficient and effective method for reducing these emissions. These key papers are taken from the journals Fuel, Fuel Processing Technology and Progress in Energy and Combustion Science.
Download or read book Combustion Engineering Issues for Solid Fuel Systems written by Bruce G. Miller and published by Academic Press. This book was released on 2008-07-02 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design, construct and utilize fuel systems using this comprehensive reference work. Combustion Engineering Issues for Solid Fuel Systems combines modeling, policy/regulation and fuel properties with cutting edge breakthroughs in solid fuel combustion for electricity generation and industrial applications. This book moves beyond theory to provide readers with real-life experiences and tips for addressing the various technical, operational and regulatory issues that are associated with the use of fuels. With the latest information on CFD modeling and emission control technologies, Combustion Engineering Issues for Solid Fuel Systems is the book practicing engineers as well as managers and policy makers have been waiting for. - Provides the latest information on CFD modeling and emission control technologies - Comprehensive coverage of combustion systems and fuel types - Addresses policy and regulatory concerns at a technical level - Tackles various technical and operational issues
Download or read book Pollutants from Combustion written by Christian Vovelle and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is based on the lectures presented at the NATO Advanced Study Institute: (ASI) «Pollutants Formation from Combustion. Formation Mechanisms and Impact on th th Atmospheric Chemistry» held in Maratea, Italy, from 13 to 26 september 1998. Preservation of the environment is of increasing concern in individual countries but also at continental or world scales. The structure of a NATO ASI which involve lecturers and participants of different nationalities was thought as especially well suited to address environmental issues. As combustion is known to substantially contribute to the damaging of the atmosphere, it was natural to concentrate the ASI program on reviewing the currently available knowledge of the formation mechanisms of the main pollutants liberated by combustion systems. In most situations, pollutants are present as trace components and their formation and removal is strongly conditioned by the chemical reactions initiated by fuel consumption. Therefore specific lectures were aimed at defining precisely the general properties of combustion chemistry for gaseous, liquid and solid fuels. Physical factors can strongly affect the combustion chemistry and their influence was also considered. An interesting peculiarity of this specific ASI was to complement the program with a substantial part concerned with the impact of the main combustion pollutants: NOx, aromatics, soot, VOCs, sulphur and chlorinated compounds, on atmospheric chemistry.
