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Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Final Technical Report written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vinayak N. Kabadi
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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (861 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing written by Vinayak N. Kabadi and published by . This book was released on 1992* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, October 1, 1994-December 31, 1994 written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (727 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, June 1, 1992--August 31, 1992 written by and published by . This book was released on 1992 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of viscosity models available in the literature has been completed and is reported below. Model development work for viscosities is scheduled to begin in the next quarter.
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ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (685 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, December 1, 1992--February 28, 1993 written by and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Very little data is available on the thermodynamic properties of coal model compounds in liquid phase at high pressures. The authors present preliminary compilations of available data. It is anticipated that they will require vapor pressure and saturated liquid density data for coal model compounds in their high pressure liquid equation of state development. These data sets have also been compiled and are presented. They have at this time completed a review of techniques for high pressure density measurements. Some thought is being given to the possibility of building an apparatus to carry out density measurements for selected model compounds. Finally, they reproduce the Thomson et al equation and describe their preliminary procedure to test this equation with available high pressure thermodynamic data. They acknowledge the possibility that a number of modifications of the Thomson equation will be necessary before a reasonably accurate liquid state equation of state for coal model compound emerges.
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ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (727 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, September 1, 1992--November 30, 1992 written by and published by . This book was released on 1992 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: None of the models available in the literature are known to work very well for aromatic compounds such as the ones that occur in coal derived materials. Two models - one by Van Velzen et al. (Ind Eng. Chem. Fundam. Vol 11, 1972, pp. 20-25) using a group contribution method and the other by Hwang et al (Ind. Eng. Chem. Process Des. Dev., Vol. 21, 1982, pp. 127-134) using a corresponding states method - were tested for some typical compounds that occur in coal liquids. These methods give errors ranging from 10 to 50% for viscosities of such compounds. These errors are too high and considering further errors in extension of these models to coal liquids, these models were considered unacceptable in our work. We have therefore set out to develop a new model for viscosities of aromatic compounds. We plan to base the model on the procedure similar to that of Van Velzen, however developed for just aromatic compounds. Our model, once developed will therefore be a group contribution method centered around the benzene ring structure.
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ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (682 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report written by and published by . This book was released on 1993 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The viscosity of coal derived liquids is an important property that is required for the design of the coal liquefaction processes, as well as for understanding the flow characteristics of coal liquids. Coal liquids are complex undefined mixtures and boil over a wide range of temperatures. One method of characterizing coal liquids is to treat coal liquids as a continuous distribution of molecular weights. Upon review of the literature for viscosity correlations, the authors quickly concluded that there is no accurate method available that may be successfully applied to coal liquids. They generally believe that correlations based on molecular structure of materials are superior to those that use solely the characterization parameters such as refractive index, critical properties, density, boiling points etc. A few correlations in the literature do consider molecular structures in viscosity determinations. Using important features in these correlations, they set out to develop a new viscosity correlation that would apply to model coal aromatic compounds, their mixtures and finally to coal derived liquids themselves. The correlation for pure compounds and mixtures has been developed and is discussed below. Attempts are now being made to apply this to coal derived liquids.
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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (685 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, June 1, 1993--August 31, 1993 written by and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project is to develop a model for solid-liquid equilibria and a model for viscosities of the products of coal liquifaction processes. The same characterization procedure and representation by continuous distributions as used in previous work on vapor-liquid equilibria and excess enthalpies of coal liquids will be used. Models when fully developed will give the solid-liquid phase equilibrium properties and viscosities as factors of temperature and pressure for known molecular weight distribution and structural characterization of the coal liquid. To accomplish this well, the project requires three tasks: solid-liquid phase equilibrium model development; experimental viscosity measurements; viscosity model development. Preliminary work on testing of the liquid state equation of state of Thomson et al has been completed. Goodwin has compiled data for benzene and toluene and fitted specific expressions so that smoothed data are generated over a large range of temperatures and pressures. The authors have used these data to test the Thomson et al liquid state equation of state for high pressure density and heat capacity predictions. To obtain a liquid state equation of state that will predict all thermodynamic properties accurately, the authors believe that the vapor pressure correlation, saturated liquid density correlation as well as correlation for parameters B and C of the Tait equation need to be modified by extensive regression using experimental data. They have undertaken such a task and results will be reported in a future report.
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ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.:/5 (683 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, October 1--December 31, 1994 written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project is to develop a model for solid-liquid equilibria and a model for viscosities of the products of coal liquefaction processes. The same characterization procedure and representation by continuous distributions as used in previous work on vapor-liquid equilibria and excess enthalpies of coal liquids will be used. Models when fully developed will give the solid-liquid phase equilibrium properties and viscosities as factors of temperature and pressure for known molecular weight distribution and structural characterization of the coal liquid. To accomplish this well, the project requires three tasks: (1) Solid-Liquid phase equilibrium model development; (2) Experimental Viscosity Measurements; and (3) Viscosity Model Development. The work on development of a predictive model for saturated liquid volumes of coal model compounds has been completed. A manuscript has been prepared for submission to AIChE Journal. A copy of the manuscript is attached. Work on extending the viscosity model to coal derived liquids is continuing and progress on this work will be included in the next report.
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ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (873 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing written by and published by . This book was released on 1992 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report we present two data sets that have been compiled to assist in the model developments for solid-liquid equilibria and viscosities of coal derived systems. The first one is on vapor pressures of solid aromatics and the second one consists of viscosities of pure model compounds and some mixtures. These databanks are ready for usage in model development and are summarized in Tables 1 and 2. Literature is being searched to compile similar data for high pressure liquid compressibilities, liquid and solid heat capacities and solid-liquid equilibria for model compound systems. Literature search is also containing to investigate available viscosity models. Once this is completed a few models will be selected for evaluation and consideration as candidates for extension to coal liquids.
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ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (16 download)
Download or read book Thermodynamic and Rheological Properties of Solid-liquid Systems in Coal Processing. Quarterly Technical Report, March 1, 1992--May 31, 1992 written by and published by . This book was released on 1992 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report we present two data sets that have been compiled to assist in the model developments for solid-liquid equilibria and viscosities of coal derived systems. The first one is on vapor pressures of solid aromatics and the second one consists of viscosities of pure model compounds and some mixtures. These databanks are ready for usage in model development and are summarized in Tables 1 and 2. Literature is being searched to compile similar data for high pressure liquid compressibilities, liquid and solid heat capacities and solid-liquid equilibria for model compound systems. Literature search is also containing to investigate available viscosity models. Once this is completed a few models will be selected for evaluation and consideration as candidates for extension to coal liquids.
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ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1754 pages
Book Rating : 4.:/5 (319 download)
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 784 pages
Book Rating : 4.3/5 (129 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1996 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Total Pages : 826 pages
Book Rating : 4.:/5 (31 download)
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Constantine Tsonopoulos
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ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (41 download)
Download or read book Thermodynamic and Transport Properties of Coal Liquids written by Constantine Tsonopoulos and published by . This book was released on 1986-04-03 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: A monograph for the student, specialist, and engineer working on coal liquefaction process development and design. Focuses on thermodynamic and transport properties needed in heat and material balances, and equipment design calculations. Presents data needs for process design, all coal liquefaction processes, and methods for characterizing coal liquids and model compounds. Discusses properties such as vapor, vapor-liquid equilibria, thermal, density, surface tension and transport properties. Includes look at future needs.
