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Measurement Of The Flow Properties Of Coals For In Situ Gasification Progress Report July 1978 September 1978 As A Function Of Water Saturation And Orientation
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Book Synopsis Measurement of the Flow Properties of Coals for In-situ Gasification. Progress Report, July 1978--September 1978. [As a Function of Water Saturation and Orientation]. by :
Download or read book Measurement of the Flow Properties of Coals for In-situ Gasification. Progress Report, July 1978--September 1978. [As a Function of Water Saturation and Orientation]. written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective and relative permeabilities of Hanna, Wyoming sub-bituminous coals and Texas lignites to nitrogen and carbon dioxide were measured as functions of water saturation and structural orientation at simulated overburden pressures of 200 psig and 400 psig. Porosity values derived from water saturation and shrinkage values were also obtained for the six Hanna and three lignite samples which were tested. The results of permeability tests on five Texas lignites reported previously were coupled with the three new runs to obtain average relative permeability curves for the lignites. The present work merely adds to the statistical population developed under the contract and analysis will be a partial function of the final report.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 1696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Flow Properties of Coals for In-situ Gasification. Final Report, December 1977--November 1978. [With Dependence on Degree of Water Saturation]. by :
Download or read book Measurement of the Flow Properties of Coals for In-situ Gasification. Final Report, December 1977--November 1978. [With Dependence on Degree of Water Saturation]. written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective and relative permeabilities of six coals, comprising thirty-five samples, to nitrogen and carbon dioxide were measured as functions of water saturation and overburden pressure. The coals consist of bituminous, sub-bituminous and lignite types. Simulated overburden pressures ranged from 200 psig to 550 psig. All tests were performed over a decreasing water saturation cycle. Values of porosity, absolute permeability, shrinkage and critical gas saturation were measured on numerous samples. Average values are correlated as to coal type and structural orientation whenever the latter was discernible. The results indicate that CO/sub 2/ reduces the effective permeabilities by a moderate amount vis-a-vis nitrogen. The effect of overburden pressure was to drastically reduce the effective permeabilities. The relative permeability curves were significantly distinct as regards coal type and generalized (averaged) results are presented for universal employment. The characteristic shape of the relative permeability curves remain approximately independent of the magnitude of the stress field. In all, sixty-seven cores were tested over the two year period of both contracts, yielding seventy-six effective permeability curves. Thirty-five samples were tested during the current contract period, yielding forty-four effective permeability curves. Numerous other samples were tested for various point values, such as porosity and absolute permeability.
Book Synopsis Measurement of the Flow Properties of Coals for In-situ Gasification. Quarterly Report, December 1977--February 1978. [Different Gases, Degree of Water Saturation, Etc]. by :
Download or read book Measurement of the Flow Properties of Coals for In-situ Gasification. Quarterly Report, December 1977--February 1978. [Different Gases, Degree of Water Saturation, Etc]. written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effective and relative permeabilities of Gillette, Wyoming sub-bituminous and Pricetown, W. Va. bituminous coals to carbon dioxide were measured as functions of water saturation and structural orientation at simulated overburden pressures of 200 psig and 400 psig. The results indicate that carbon dioxide has a negligible effect on permeability reduction. This fact is of interest to both in-situ coal gasification and to methane drainage. Reductions in permeability were of the order of 0 to 20 percent of values determined with nitrogen. The effect of CO/sub 2/ on the Gillette coals was to drastically alter the shape of the effective and relative permeability curves at lower water saturations. The effect of doubling the overburden pressure had a proportionally inverse effect on the effective permeabilities to gas. This effect is most pronounced at lower water saturations. The general characteristic behavior of the relative permeability curves remained relatively independent of the stress field.
Book Synopsis Measurement of the Flow Properties and Capillary Pressure Relationships of Certain Coals Pertaining to Underground Coal Gasification. Quarterly Report, June--August 1977 by :
Download or read book Measurement of the Flow Properties and Capillary Pressure Relationships of Certain Coals Pertaining to Underground Coal Gasification. Quarterly Report, June--August 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Gas-phase permeabilities of five samples from the Hanna IV site were measured as functions of water saturation. These samples were cut from a core which was obtained in-situ at a subsurface depth of approximately 335 feet. In addition effective permeabilities to water were measured over an increasing water saturation cycle for three Hanna and two Pittsburgh coals obtained from surface mines. Absolute permeabilities to gas as a function of overburden pressure were measured for one additional Hanna surface sample. Preliminary results of carbon dioxide flows through the three coals are briefly discussed.
Download or read book Fossil Energy Update written by and published by . This book was released on 1978 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Flow Properties and Capillary Pressure Relationships of Certain Coals Pertaining to Underground Coal Gasification. Quarterly Report, March--May 1977 by :
Download or read book Measurement of the Flow Properties and Capillary Pressure Relationships of Certain Coals Pertaining to Underground Coal Gasification. Quarterly Report, March--May 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurement of the absolute permeability to gas, porosity, and effective and relative permeability to gas of the Pittsburgh bituminous coal and the Hanna, Wyoming subbituminous coal has been extended. The same measurements have been made on several samples from the Gillette, Wyoming subbituminous coal. Shrinkage of both coals with drying was also measured. The gas relative permeability curves of the coals are compared and the difference is striking. The rate of increase in permeability to gas past the critical gas saturation is significantly greater as the rank of the coal decreases. Similarly values of absolute permeability, shrinkage, and porosity are inverse functions of rank. The critical gas saturation does not appear to be a function of rank.
Book Synopsis Phase Equilibrium and Volumetric Properties of Coal-derived Fluids by : Oklahoma State University. School of Chemical Engineering
Download or read book Phase Equilibrium and Volumetric Properties of Coal-derived Fluids written by Oklahoma State University. School of Chemical Engineering and published by . This book was released on 1979 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data have been obtained at 100°C on the volumetric properties of three binary gas systems: hydrogen + methane, hydrogen + carbon dioxide and methane + carbon dioxide. Interaction virial coefficients evaluated from these data are estimated to be precise to ± 0.5 cc/gmol. In the vapor--liquid equilibrium study, the equipment and analytical techniques have been refined and data acquisition has begun. K-values have been measured at 220°F and pressures from 200 to 2,000 psia on the multicomponent system methane, ethane, propane, toulene, 1-methylnaphthalene. Precision of the data is estimated to vary from 2% for methane to 10% for 1-methylnaphthalene.
Book Synopsis Laboratory Support for in Situ Gasification by :
Download or read book Laboratory Support for in Situ Gasification written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is directed toward support studies for the national program for the development and demonstration of in situ coal gasification processes. The objective of this work is to determine the reaction-controlling variables and reaction kinetics for the gasification of chars obtained by pyrolyzing coal in simulated underground gasification conditions. The reactions being studied and to be studied include steam-char, CO/sub 2/-char, H/sub 2/-char, the water-gas shift reaction, and the methanation reaction. In this report are presented data regarding the kinetics of the reaction of steam with chars prepared from Pittsburgh seam high-volatile bituminous coal. In addition, a reaction model is described correlating the steam-char reaction rates measured earlier for Hanna subbituminous coal with operating conditions including temperature, partial pressures of steam and hydrogen, and extent of carbon gasification. Partial results are presented and discussed for an investigation of structural parameters of Hanna char as a function of pyrolysis conditions and extent of carbon gasified.
Book Synopsis Test and Evaluate the TRI-GAS Low-BTU Coal Gasification Process by :
Download or read book Test and Evaluate the TRI-GAS Low-BTU Coal Gasification Process written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Materials Research for Clean Utilization of Coal by : Samuel J. Schneider
Download or read book Materials Research for Clean Utilization of Coal written by Samuel J. Schneider and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applied Research and Evaluation of Process Concepts for Liquefaction and Gasification of Western Coals by : Wendell H. Wiser
Download or read book Applied Research and Evaluation of Process Concepts for Liquefaction and Gasification of Western Coals written by Wendell H. Wiser and published by . This book was released on 1978 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diffusion rates of polyaromatic compounds in alumina catalyst supports at room temperature were appreciably faster than predicted based on the pore diffusion theory. This has been ascribed to a surface diffusion component, which contributes about two-thirds of the diffusion flux and may be independent of the size of the aromatic compound. The reaction rate of coal particles in a coiled tube hydrogenation reactor was linearly dependent on the external surface area of the particles. Ultimate conversion to liquid and gaseous products was independent of the particle size. Structural analysis of the acidic and basic fraction of the heavy oil produced by catalytic hydrogenation of coal has been completed. The average molecular weight of the acid fraction was 246 while that of the base fraction was 279. Subfractions of the acid fraction obtained by gel permeation and elution chromatography had molecular weights ranging from 229 to 986, while base subfractions ranged from 237 to 455. The fraction of aromatic carbons ranged from 0.43 to 0.86, with 1 to 3 rings per average molecule.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1979 with total page 1334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Health and Environmental Effects of Coal Technologies by : Richard Dee Brown
Download or read book Health and Environmental Effects of Coal Technologies written by Richard Dee Brown and published by . This book was released on 1979 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1979 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Survey of Biomass Gasification: Synopsis and executive summary by : Solar Energy Research Institute
Download or read book A Survey of Biomass Gasification: Synopsis and executive summary written by Solar Energy Research Institute and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Atomic Scientists by :
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1970-06 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
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