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Clean Coal Technologies

Clean Coal Technologies
Author: Rajesh Kumar Jyothi
Publisher: Springer Nature
Total Pages: 665
Release: 2021-05-10
Genre: Technology & Engineering
ISBN: 3030685020

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This book presents the state of art of the several advanced approaches to beneficiation of coal. The influence of recent technology attains the advantages of processing coal, purification studies, rheological behavior, and the mineral beneficiation. The experts collected in this volume have contributed significantly to the enrichment in the in depth knowledge not only in context of working knowledge, but also future prospects of clean coal technology.


Advances in Coal Beneficiation

Advances in Coal Beneficiation
Author:
Publisher:
Total Pages:
Release: 1978
Genre:
ISBN:

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Coal beneficiation as a means of reducing the sulfur and the ash content of coal is receiving increasing attention in the nation's drive to switch from the use of oil and gas to coal to meet the nation's energy requirements. However, increasingly stringent environmental controls are being placed on coal-burning plants. This paper briefly reviews current coal beneficiation practices and the advances in coal beneficiation technology that are being developed to significantly reduce the sulfur content of many high-sulfur coals. Technical and economic comparisons are presented for two currently used and two more recently developed coal beneficiation processes. The comparisons are based on conceptual process designs (developed on a common basis) for beneficiation plants designed to produce 1500 and 15,000 tons of moisture- and ash-free (MAF) coal per day. Three high-sulfur coals from significant U.S. coal-producing regions were chosen as feed coals to the conceptual plants. Results are presented for both ''grassroots'' and battery-limits-type beneficiation plants. The following conclusions may be drawn regarding the four beneficiation processes evaluated: 1. Wet mechanical beneficiation processes represent the least-cost methods. Costs for the chemical beneficiation processes are significantly higher. 2. Chemical beneficiation processes have the potential for effecting much greater sulfur reduction than the wet mechanical beneficiation processes. This is significant when considering the much lower SO/sub x/ emission levels that are being promulgated for coal-burning plants.


Coal

Coal
Author: National Research Council
Publisher: National Academies Press
Total Pages: 183
Release: 2007-12-21
Genre: Science
ISBN: 030911022X

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Coal will continue to provide a major portion of energy requirements in the United States for at least the next several decades. It is imperative that accurate information describing the amount, location, and quality of the coal resources and reserves be available to fulfill energy needs. It is also important that the United States extract its coal resources efficiently, safely, and in an environmentally responsible manner. A renewed focus on federal support for coal-related research, coordinated across agencies and with the active participation of the states and industrial sector, is a critical element for each of these requirements. Coal focuses on the research and development needs and priorities in the areas of coal resource and reserve assessments, coal mining and processing, transportation of coal and coal products, and coal utilization.


Application of Mineral Beneficiation Technology to Coal Preparation

Application of Mineral Beneficiation Technology to Coal Preparation
Author: L. Adorgán
Publisher:
Total Pages: 272
Release: 1987
Genre:
ISBN:

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Review of advances in mineral processing technology and equipment, theirapplicability to coal preparation, advances in coal preparation which havedirect relevance to Eastern Canadian coals, and techniques for intensivecleaning, sulphur reduction and coal-liquid mixtures. Recommendations areclassified under laboratory research and tests, pilot scale tests and fullscale plant tests. Sources include journals, text books, papers presented atcongresses and symposia, various reports and manufacturers' specifications.


Advanced Coal Preparation and Beyond

Advanced Coal Preparation and Beyond
Author: S. Komar Kawatra
Publisher: CRC Press
Total Pages: 497
Release: 2020-01-27
Genre: Technology & Engineering
ISBN: 1000763447

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Updating content from the author’s 2001 book Coal Desulfurization, this new title focuses on CO2 sequestration and utilization. It includes information on the theory and practical approaches to CO2 capture and recent advances in the use of sequestered CO2. Avoiding these pollutants requires either forgetting about the 250 billion tons of coal reserves the United States possesses or capturing and utilizing the pollutants in a profitable and environmentally responsible fashion. The book covers postcombustion and precombustion capture approaches for coal, and postcombustion capture can be generalized to many other fuels. Recent practical implementations at full-scale power facilities around the world are discussed. The book covers sequestering CO2 via underground, oceanic, biological, and other long-term CO2 storage methods. It also includes recent advances in utilizing CO2 for enhanced oil recovery, advances in storage with depleted oil and gas reservoirs and deep saline aquifers, and additional topics. The book also examines specific applications of pure CO2 and covers chemical conversion of CO2 to useful compounds. It answers questions like "Can we create methanol from coal?" or "Can we create ethanol from coal?" It is found that methanol and ethanol cannot be sustainably produced from coal power alone. However, oxalic acid can be created at a much lower energy cost than methanol or ethanol. Oxalic acid can be used to extract rare earths, which are not currently produced anywhere in the United States, but are typically concentrated in coal ash. Aimed at researchers and industry professionals in chemical, environmental, and energy engineering, this book provides insight and inspiration into capturing CO2 not merely as a response to regulatory pressure and climate change but as an inherently profitable and valuable venture.


Coal Combustion Products (CCPs)

Coal Combustion Products (CCPs)
Author: Tom Robl
Publisher: Woodhead Publishing
Total Pages: 0
Release: 2017-05-03
Genre: Technology & Engineering
ISBN: 9780081009451

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Coal Combustion Products (CCPs): Their Nature, Utilization and Beneficiation is a valuable resource for engineers and scientists from the coal, cement, concrete, and construction industries seeking an in-depth guide to the characteristics, utilization, beneficiation, and environmental impacts of coal combustion by-products. Researchers in universities working in this area will also find much to expand their knowledge. The book provides a detailed overview of the different waste materials produced during power generation from coal, exploring their nature, beneficiation techniques, applications, and environmental impacts. Strong focus is placed on coal fly ash, bottom ash, and flue gas desulfurization materials, and their employment in cement, concrete, gypsum products, aggregates, road construction, geotechnics, and agriculture, among other products and industries. Part 1 focuses on the nature of coal ashes, with chapters on their origin, generation, and storage, both in ponds and landfill. The coal combustion by-products produced as a result of clean coal technologies are the focus of the final chapter in the section. The next group of chapters in Part 2 considers the utilization of different waste materials, including the key products coal fly ash, bottom ash, and flue gas desulfurization materials. This is followed by a contribution reviewing the latest research into innovative and advanced uses for coal ash. After an introduction to ash quality problems and quality monitoring, Part 3 concentrates on the essential area of by-product beneficiation techniques, in other words how to maximize the quality of materials for the end user. Topics covered include separation methods, thermal processing, and chemical passivation. The final section of the book addresses environmental issues, including the use of coal combustion by-products in green construction materials and the essential health and safety considerations associated with their use.