Download or read book Dependence of Liquefaction Behaviour on Coal Characteristics written by Peter Hervey Given and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Coal Liquefaction Behavior on Coal Characteristics written by Pennsylvania State University. Coal Research Section and published by . This book was released on 1974 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of coal liquefaction behavior on coal characteristics written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Coal Liquefaction Behavior on Coal Characteristics written by Peter Hervey Given and published by . This book was released on 1974 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Coal Liquefaction Behavior on Coal Characteristics written by P. H. Given and published by . This book was released on 1974 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Coal Liquefaction Behavior on Coal Characteristics written by and published by . This book was released on 1974 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Liquefaction Behavior on Coal Characteristics Part VI Relationship of Liquefaction Behavior of a Set of High Sulfur Coals to Chemical Structural Characteristics Final Technical Report March 1981 to February 1984 written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The initial aim of this research was to use empirical mathematical relationships to formulate a better understanding of the processes involved in the liquefaction of a set of medium rank high sulfur coals. In all, just over 50 structural parameters and yields of product classes were determined. In order to gain a more complete understanding of the empirical relationships between the various properties, a number of relatively complex statistical procedures and tests were applied to the data, mostly selected from the field of multivariate analysis. These can be broken down into two groups. The first group included grouping techniques such as non-linear mapping, hierarchical and tree clustering, and linear discriminant analyses. These techniques were utilized in determining if more than one statistical population was present in the data set; it was concluded that there was not. The second group of techniques included factor analysis and stepwise multivariate linear regressions. Linear discriminant analyses were able to show that five distinct groups of coals were represented in the data set. However only seven of the properties seemed to follow this trend. The chemical property that appeared to follow the trend most closely was the aromaticity, where a series of five parallel straight lines was observed for a plot of f/sub a/ versus carbon content. The factor patterns for each of the product classes indicated that although each of the individual product classes tended to load on factors defined by specific chemical properties, the yields of the broader product classes, such as total conversion to liquids + gases and conversion to asphaltenes, tended to load largely on factors defined by rank. The variance explained and the communalities tended to be relatively low. Evidently important sources of variance have still to be found.

Download or read book The Dependence of Liquefaction Behavior on Coal Characteristics written by Shan-Tao Hsieh and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dependence of Liquefaction Behavior on Coal Characteristics written by United States. Department of Energy and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dependence of Liquefaction Behavior on Coal Characteristics written by Shan-Tao Hsieh and published by . This book was released on 1984 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Coal Petrology written by Isabel Suarez-Ruiz and published by Academic Press. This book was released on 2008-10-09 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an integrated approach towards the applications of coal (organic) petrology and discusses the role of this science in the field of coal and coal-related topics. Coal petrology needs to be seen as a continuum of organic (macerals) and inorganic (minerals and trace elements) contributions to the total coal structure, with the overprint of coal rank. All this influences the behavior of coal in utilization, the coal by-products, the properties of coal as a reservoir for methane or a sequestration site for carbon dioxide, and the relationships of coal utilization with health and environmental issues. The interaction of coal properties and coal utilization begins at the mine face. The breakage of the coal in mining influences its subsequent beneficiation. Beneficiation is fundamental to the proper combustion of coal and is vital to the preparation of the feedstock for the production of metallurgical coke. An understanding of basic coal properties is important for achieving reductions in trace element emissions and improving the efficiency of combustion and combined-cycle gasification. The production of methane from coal beds is related to the properties of the in situ coal. Similarly, coal bed sequestration of carbon dioxide produced from combustion is dependent on the reservoir properties. Environmental problems accompany coal on its way from the mine to the point of utilization and beyond. Health aspects related with coal mining and coal utilization are also included because, in planning for coal use, it is impossible to separate environmental and health issues from the discussion of coal utilization. The book is aimed at a wide audience, ranging from researchers, lecturers and students to professionals in industry and discusses issues (such as the environmental, and health) that are of concern to the general public as a whole. - This book focuses on the applications of coal (organic) petrology to our modern society - It is an integrated approach to help the reader appreciate the importance of coal quality and coal utilization. Coal composition (macerals, mineral, trace elements) and the overprint of coal rank are treated together - The book synthesises all the possibilities of the organic petrology as a tool for coal utilization in conventional applications (mining and beneficiation, coal combustion, gasification, liquefaction, carbonization), as a precursor of carbon materials and as a petroleum source and reservoir rock - The role of applied petrology in the characterization of solid by-products from coal utilization is also discussed - In addition, this book describes the present status of environmental and health problems linked to coal utilization and the ways in which such problems might be overcome in the future

Download or read book The Relation of Coal Characteristics to Liquefaction Behavior written by Pennsylvania State University. Coal Research Section and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The relation of coal characteristics to liquefaction behavior written by Pennsylvania State University. Coal Research Section and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fossil Energy Update written by and published by . This book was released on 1977 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relation of Coal Characteristics to Coal Liquefaction Behavior written by Peter Hervey Given and published by . This book was released on 1974 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Relation of Coal Characteristics to Liquefaction Behavior written by Pennsylvania State University. Coal Research Section and published by . This book was released on 1973* with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dependence of Liquefaction Behavior on Coal Characteristics Part V Penetration of Solvent Vapor Into Coal Particles Final Technical Report March 1981 February 1984 written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation of the sorption of solvent vapor into high volatile bituminous coal at temperatures up to 175°C indicates that the solvent weight gain involves a complex coupling of several phenomena including adsorption, sorption into the coal matrix, capillary condensation and extraction into the condensed vapor phase. It appears that the sorption in untreated coal is dominated by capillary condensation induced by solvent extraction. As a result, an equilibrium state is not attainable. This extraction mechanism can be eliminated by the preextraction of the coal particles with pyridine. Vapor sorption experiments conducted on pyridine-extracted coal can be used to obtain information concerning the adsorption process and the process associated with the diffusion of the solvent molecules into the coal matrix. Vapor sorption studies conducted on pyridine-extracted coal particles indicate that the sorption process involves a coupling of adsorption, molecular diffusion and a relaxation of the coal structure to a new state. The results have been compared with models derived to describe the coupling of molecular diffusion and polymer chain relaxation in glassy polymers. The thermodynamics of solvent sorption into coal particles is complicated by the presence of severe hysteresis effects. The amount of solvent sorbed by a coal particle is not only a function of solvent activity but depends upon the past history of the sorption process which influences the structure of coal. As a result, fits all the data to various models were obtained but the resulting parameters had doubtful physical significance. (LTN).