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Author : N. Shah
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (249 download)
Download or read book Comprehensive Investigation of Inorganic and Sulfur Species in Coal written by N. Shah and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Vourvopoulos
Publisher : World Scientific
ISBN 13 : 981455538X
Total Pages : 406 pages
Book Rating : 4.8/5 (145 download)
Download or read book Elemental Analysis Of Coal And Its By-products - Proceedings Of The Conference written by George Vourvopoulos and published by World Scientific. This book was released on 1992-04-30 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (727 download)
Download or read book Extraction, Separation, and Analysis of High Sulfur Coal written by and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two processes were studied in the period. The first was a study of oxidative desulfurization processes. Earlier research indicated that the use of copper-promoted oxidation of the organic and inorganic sulfur species in coal showed considerable promise. Initial studies utilizing CuCl2 demonstrated that the desulfurization yields were much lower than previously quoted. However, the experiments suggested that the reactant pathway showed promise and further investigations were conducted varying the solvent and replacing the Cl− anion with the OH− species. Ultimate analyses of these reactions are reported in addition to the experimental conditions used. Reactions using Cu(OH)2, CuCl2, and copper cyclohexane butyrate are investigated. The second process discussed was desulfurization using selective solvation. Supercritical ethanol was used to investigate the extent of organic sulfur removal from coal. (VC).
Author :
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (683 download)
Download or read book Analyzing Organic Sulfur in Coal written by and published by . This book was released on 1994 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall goal of this study is to improve the understanding of sulfur in coals/chars via the use of combined advanced nondestructive and advanced destructive methods of sulfur analysis. This study combines selective oxidation, analytical pyrolysis, and sulfur X-ray Absorption Near Edge Structure Spectroscopy (XANES) analysis. Samples with a wide variety of sulfur contents, (0.63%--4.40%) have been prepared for use in this study. This includes steam gasification chars, oxidized coals and desulfurized coals as well of the original unaltered coals. Mild pyrolysis and XANES data shows that the sulfur chemistry of gasification chars is significantly different from that of the original coals. Mild pyrolysis of the samples that were oxidized with peroxyacetic acid showed that the level of simple thiophene structures observed in the pyrolysis products declines with increasing levels of oxidation. Sulfur XANES spectra of treated samples showed various effects depending on the treatment severity. The XANES spectra of less severely treated samples were similar, although not identical, to the untreated coal spectra. XANES of gasification chars indicated conversion of pyrite to pyrrhotite, removal of organic sulfide sulfur and dissolution of soluble inorganic sulfur species during gasification. Mild oxidation with peroxyacetic acid results in preferential oxidation of sulfide forms before thiophene forms but increasing oxidation severity leads to virtually all sulfur species being oxidized. Good agreement between W-band EPR and XANES data for aromatic sulfur contents were obtained. The TPR analysis of coal indicated that organic sulfur was present as alkyl-aryl sulfide, aryl-aryl sulfides, simple thiophenes and condensed thiophenes. TPR shows that non-thiophenic compounds are removed by PAA oxidation, and that the longer the oxidation is performed the greater is the removal of non-thiophenic sulfur structures.
Author : R. W. Stanton
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (31 download)
Download or read book Organic and Pyritic Sulfur in Coal written by R. W. Stanton and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. R. Powell
Publisher : Forgotten Books
ISBN 13 : 9780364010495
Total Pages : 404 pages
Book Rating : 4.0/5 (14 download)
Download or read book A Study of the Forms in Which Sulphur Occurs in Coal (Classic Reprint) written by A. R. Powell and published by Forgotten Books. This book was released on 2018-03-06 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Study of the Forms in Which Sulphur Occurs in Coal There are many indications that organic sulphur compounds form a large part of the sulphur in coal, but the nature of these compounds or the amount of sulphur SO combined has never been determined prior to this investigation. Since the organic sulphur had its source in the protein sulphur of the plant and animal life from which the coal was formed, it is probable that these compounds in the coal are degradation products of the original material. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author : R. E. Perry
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.3/5 (243 download)
Download or read book Laboratory and Full-scale Sulfur Elimination Tests on Coal from Pratt Bed, Alabama written by R. E. Perry and published by . This book was released on 1958 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (727 download)
Download or read book Extraction, Separation, and Analysis of High Sulfur Coal. Technical Progress Report No. 16, July 15, 1991--October 15, 1991 written by and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two processes were studied in the period. The first was a study of oxidative desulfurization processes. Earlier research indicated that the use of copper-promoted oxidation of the organic and inorganic sulfur species in coal showed considerable promise. Initial studies utilizing CuCl2 demonstrated that the desulfurization yields were much lower than previously quoted. However, the experiments suggested that the reactant pathway showed promise and further investigations were conducted varying the solvent and replacing the Cl− anion with the OH− species. Ultimate analyses of these reactions are reported in addition to the experimental conditions used. Reactions using Cu(OH)2, CuCl2, and copper cyclohexane butyrate are investigated. The second process discussed was desulfurization using selective solvation. Supercritical ethanol was used to investigate the extent of organic sulfur removal from coal. (VC).
Author : K. H. Michaelian
Publisher :
ISBN 13 :
Total Pages : 644 pages
Book Rating : 4.0/5 ( download)
Download or read book 7th International Conference on Coal Science written by K. H. Michaelian and published by . This book was released on 1993 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sam Stuart
Publisher : Butterworth-Heinemann
ISBN 13 : 1483162087
Total Pages : 366 pages
Book Rating : 4.4/5 (831 download)
Download or read book The Problems of Sulphur written by Sam Stuart and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Problems of Sulphur discusses all aspects of the problems associated with sulfur in coal. The book is divided into three parts. Part 1 addresses the forms of sulfur in coal and evaluates processes directed at the chemical removal of sulphur. Part 2 expands on this to look at alternative means of removing sulfur both physically and biologically, sulfur removal during the combustion of coal and flue gas desulfurization processes. Part 3 looks at the role of sulphates in the atmosphere from the points of view of their formation, transport and deposition and of their effects on health, materials and the atmosphere. The book will be of value to engineers, environmentalists, and chemists.
Author : J. A. Cavallaro
Publisher :
ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.3/5 (121 download)
Download or read book Sulfur reduction potential of the coals of the United States written by J. A. Cavallaro and published by . This book was released on 1976 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of a washability study of 455 raw coal channel samples with special emphasis on sulfur reduction. These raw coals contained on the average 14.0 percent ash, 1.91 percent pyritic sulfer, and 3.02 percent total sulfur.
Download or read book Laboratory Study for Removal of Organic Sulfur from Coal. Quarterly Technical Progress Report written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Substantial progress has been made in the development of the Gravimelt Process for removal of organic sulfur from coal. Three reactors have been fabricated for both material balance studies of the desulfurization of coal with caustic and examination of the behavior of model organic and inorganic sulfur-containing compounds with the same mixture. Model organic sulfur conpounds have been procured and samples of Kentucky No. 9 coal enriched in mineral matter and samples enriched in organic matter have been prepared by float sink techniques for use in determining mechanism and products of the desulfurization reactions. Initial experimentation has been aimed at determining the fate of sulfur removed from coal and obtaining semi-quantitative information for future material balance studies. These studies show near 90% of the sulfur content of the Kentucky No. 9 coal was removed and approximately 3/4 of this removed sulfur was found by chemical analysis to be in the caustic phase. It was further determined that approximately 1% of the coal organic matter dissolves into the caustic phase. These results indicate rough material flows and show that material balance measurements are feasible. A preliminary conceptual engineering design for a full scale Gravimelt coal desulfurization plant was prepared in order to guide future laboratory efforts toward obtaining key engineering data. The engineering study indicates that the Gravimelt Process can be designed utilizing state of the art equipment and that likely energy recovery is approximately 90%. It is estimated that coal desulfurization costs will be in the range of $20 per ton of coal produced, or $.70/106 Btu, in 1980 dollars.
Author : Shifeng Dai
Publisher : Elsevier
ISBN 13 : 0323956351
Total Pages : 468 pages
Book Rating : 4.3/5 (239 download)
Download or read book Inorganic Geochemistry of Coal written by Shifeng Dai and published by Elsevier. This book was released on 2023-06-22 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inorganic Geochemistry of Coal explains how to determine the concentrations and modes of occurrence of elements in coal, how to diminish adverse effects of toxic elements on the environment and human health, which elements in coal could be industrially utilized, and which elements can be successfully used as indications for deciphering depositional environments and tectonic evolution. As coal use will remain at an all-time high for the next several decades, there is a critical need for understanding the properties of this fuel to ensure efficient use, encourage its economic by-product potential, and to help minimize its negative technological, environmental and health impacts. Features dozens of never-before published illustrations of critical features of the inorganic geochemistry of coal Covers both the theory and applications of the topic, including case studies to serve as real-world examples Includes a chapter on the health and environmental impacts of the mining, development and use of coal
Author : Henk Meuzelaar
Publisher : Springer Science & Business Media
ISBN 13 : 1489936718
Total Pages : 426 pages
Book Rating : 4.4/5 (899 download)
Download or read book Advances in Coal Spectroscopy written by Henk Meuzelaar and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: The past decade has witnessed major advances in our understanding of the chemical composition, structure, and reactivity of the complex organic-rich fossil matter known as "coal. " Nevertheless, important scientific questions concerning molecular weight distributions, degree of crosslinking, typical duster sizes, type of interconnecting bridges, the possible role of a "mobile phase," and the nature of organic sulfur forms remain topics of heated debate. Moreover, there appears to be a notable lack of consensus regarding the overall direction and goals of structural elucidation work. Is it worthwhile to study whole coal samples, or should we separate out the various, more or less well-defined, maceral and mineral constituents before attempting to describe the structural and compositional features of coal at the molecular Ievel? Second, should there be more emphasis on key structural features and average statistical parameters, or is it necessary to identify individual chemical structures in considerable detail? From the developments of the past decade it is clear that advanced spectroscopic techniques are playing an increasingly important role in resolving difficult questions with regard to the chemical structure and composition of coal. Moreover, it has become equally clear that no single spectroscopic approach can provide all the answers but multiple techniques need to be used in a highly integrated and synergistic manner.
Author : United States. Energy Research and Development Administration
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.3/5 (91 download)
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1976-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard A. Anderson
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (31 download)
Download or read book Changes in Coal Sulfur During Carbonization written by Richard A. Anderson and published by . This book was released on 1960 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. R. Powell
Publisher :
ISBN 13 : 9781330820490
Total Pages : 72 pages
Book Rating : 4.8/5 (24 download)
Download or read book A Study of the Forms in Which Sulphur Occurs in Coal, Vol. 111 (Classic Reprint) written by A. R. Powell and published by . This book was released on 2015-07-06 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Study of the Forms in Which Sulphur Occurs in Coal, Vol. 111 The Engineering Experiment Station was established by act of the Board of Trustees, December 8, 1903.It is the purpose of the Station to carry on investigations along various lines of engineering and to study problems of importance to professional engineers and to the manufacturing, railway, mining, constructional, and industrial interests of the State. The control of the Engineering Experiment Station is vested in the heads of the several departments of the College of Engineering. These constitute the Station Staff and, with the Director, determine the character of the investigations to be undertaken. The work is carried on under the supervision of the Staff, sometimes by research fellows as graduate work, sometimes by members of the instructional staff of the College of Engineering, but more frequently by investigators belonging to the Station corps. The results of these investigations are published in the form of bulletins, which record mostly the experiments of the Station's own staff of investigators. There will also be issued from time to time, in the form of circulars, compilations giving the results of the experiments of engineers, industrial works, technical institutions, and governmental testing departments. The volume and number at the top of the front cover page are merely arbitrary numbers and refer to the general publications of the University of Illinois: either above the title or below the seal is given the number of the Engineering Experiment Station bulletin or circular which should be used in referring to these publications. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
