Download Free The Direct Determination Of Organic Sulfur In Coal By Electron Beam Microanalysis Book in PDF and EPUB Free Download. You can read online The Direct Determination Of Organic Sulfur In Coal By Electron Beam Microanalysis and write the review.

Electron probe microanalysis (EPM) for organic sulfur content can be performed easily on -20 to -100 mesh coal samples. Samples need only be mounted in epoxy and polished as coal samples are commonly prepared for petrographic examination. 15 areas within non-contiguous vitrinite grains are analyzed with the EPM. Without the need to produce a photomosaic, the organic sulfur content of vitrinite, and therefore of a coal, may be determined in less than 10 minutes. To test the EPM method coals were analyzed for which the ASTM organic sulfur values were corrected for unextracted iron. Such a correction would take into account the effect of any pyrite that remained unextracted following the ASTM Standard Method D2492-68. As shown from the data the EPM organic sulfur contents are very close to those of the corrected ASTM values. Using the EPM method, the potential exists to achieve very rapid, multiple organic sulfur analyses, which in turn will allow for rapid, detailed measurements of variations in organic sulfur content occurring across coal seams.
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
This paper reports on petroleum coke that is stable under an electron beam and contains a uniform sulfur content. Hence, it is a suitable standard for analysis of organic sulfur content of coal. It should be as applicable for analysis of organic sulfur in other fossil fuels. This standard is available for distribution.
The overall objective of this project is to develop an analytical method to directly measure the forms of organic sulfur in coal. The method will provide a route to monitor the effectiveness of coal preparation research directed toward removal of organic sulfur in coal. The approach involves subjecting diluted coal samples simultaneously to an oxygen flow and a linear increase in temperature. Distinctive sulfur dioxide evolution patterns are observed among coals of different rank and between raw and treated coals. Assignments have been made relating each specific sulfur dioxide evolution to the non-aromatic organic, aromatic organic, and inorganic sulfur present in coals and treated coals. Work is progressing on schedule to optimize experimental conditions and to improve the efficiency of the controlled-atmosphere programmed-temperature oxidation (CAPTO) method by developing a multiple sample instrumental system.
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