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Mulled coal---A beneficiated coal form for use as a fuel or fuel intermediate. Final technical progress report No. 3, October 1, 1990--December 31, 1990

Description: The storage, transport and handling of beneficiated coals in the form of a modified wet cake (``mulled coal``) to yield a coal water fuel having acceptable properties for atomization and combustion on industrial, commercial and/or residential scales, have been investigated. The Mulled Coal project is divided into a series of tasks designed to produce formulations and system designs suitable to convert fine coal ``wet cakes`` into a material that can be stored, handled, and transported to a site… more
Date: May 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Kinetic Theory and Boundary Conditions for Highly Inelastic Spheres]. Quarterly Progress Report, July 1, 1993--September 30, 1993

Description: In this quarter a solution procedure is developed and numerical solutions are obtained for steady, fully developed, gravity-driven flows of identical, smooth, highly inelastic spheres down bumpy inclines. The boundary value problem for these flows was described in detail in the previous quarterly progress report (4/1/93--6/30/93). Solutions to the problem had not been obtained. The solution procedure is described in detail and numerical solutions are obtained that are most easily parameterized … more
Date: December 31, 1993
Creator: Richman, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Multiphase Fluid Flow During Air-Sparged Hydrocyclone Flotation by X-Ray Ct. Thirteenth Quarterly Report: 14 August--13 November, 1993

Description: The research activities during this quarter of the DOE project, {open_quotes}Characterization of Multiphase Fluid Flow During Air-Sparged Hydrocyclone Flotation{close_quotes}, involved a detailed parametric study of the flotation response of the ASH, establishing an empirical correlation between flotation response and operating variables, and development of a phenomenological description of the observed responses. In these experiments with quartz particles, flotation response is essentially cha… more
Date: November 16, 1993
Creator: Miller, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Kinetic Theory and Boundary Conditions for Highly Inelastic Spheres]. Quarterly Progress Report, September 1, 1992--December 31, 1992

Description: In this quarter the effects were studied of isotropic boundary vibration on the thermalization of assemblies that are confined between two horizontal bumpy boundaries that do and do not vibrate identically. More specifically, it was determined how the distance between the two boundaries depends on the manner in which the boundaries vibrate when a fixed normal stress is applied to the upper boundary. These effects were studied when (a) both upper and lower boundaries vibrate identically; (b) onl… more
Date: December 31, 1992
Creator: Richman, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Kinetic Theory and Boundary Conditions for Highly Inelastic Spheres]. Quarterly Progress Report, April 1, 1993--June 30, 1993

Description: In this quarter, a kinetic theory was employed to set up the boundary value problem for steady, fully developed, gravity-driven flows of identical, smooth, highly inelastic spheres down bumpy inclines. The solid fraction, mean velocity, and components of the full second moment of fluctuation velocity were treated as mean fields. In addition to the balance equations for mass and momentum, the balance of the full second moment of fluctuation velocity was treated as an equation that must be satisf… more
Date: December 31, 1993
Creator: Richman, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Novel Coal Feeder for Production of Low Sulfur Fuel. Quarterly Technical Progress Report, April 1, 1990--June 30, 1990

Description: During the past three months, the coal feeding system has been tested and currently undergoing evaluation at the University of Cincinnati. The system consists primarily of an auger feed tube which is used to both convey and provide desulfurization of a high sulfur coal feedstock. The coal is conveyed at temperatures ranging from 350 to 550{degrees}C and under normal atmospheric pressure. Under these mild processing conditions, the coal partially pyrolizes and emits sulfur in the form of hydroge… more
Date: December 31, 1990
Creator: Khang, S. J. & Keener, T. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Study of flow properties of wet solids using laser induced photochemical anemometry]. Quarterly technical progress report, April--June 1991

Description: Research continues on the flow properties of wet solids. During this period we have made: progress in the analysis of the accuracy of the technique, progress in firming the foundations of LIPA for Solid-Liquid Mixtures, progress in the construction of better prototype skimmers, continued progress in chemically manufacturing both more red europium imbedded CaF{sub 2} and Green liquid Flowlite, and progress in understanding the coupling of LIPA chemicals snd dynamic range and timing. (VC)
Date: February 23, 1992
Creator: Falco, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Novel Coal Feeder for Production of Low Sulfur Fuel. Quarterly Technical Progress Report, December 1, 1989--April 1, 1990

Description: A novel coal feeding system is currently undergoing testing and evaluation at the University of Cincinnati. The system consists primarily of an auger feed tube which is used to both convey and provide desulfurization of a high sulfur coal feedstock. The coal is conveyed at temperatures ranging from 350 to 550 {degrees}C and under normal atmospheric pressure. Under these mild processing conditions, the coal partially pyrolizes and emits sulfur in the form of hydrogen sulfide while maintaining a … more
Date: December 31, 1990
Creator: Keener, T. C.; Khang, S. J. & Yu, X. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The metered delivery of solids into pressure: A radically new machine concept

Description: This paper is the second published report on the continuing successful elaboration and embodiment of an entirely new patented machine concept for the continuous movement and accurately delivery of all sorts of particulate solids, wet or dry, into environments of ambient or differential fluid or mechanical pressure. It includes the first disclosure of the successful continuous, direct delivery of US power plant coal into 26 psi of gas pressure, which is itself an important milestone in a project… more
Date: June 1, 1992
Creator: Hay, A. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Improvement of storage, handling, and transportability of fine coal. Quarterly technical progress report, February 24, 1994--March 31, 1994

Description: The Mulled Coal Process was developed as a means of overcoming the adverse handling characteristics of wet fine coal without thermal drying. The process involves the addition of a low cost, harmless reagent to wet fine coal using off-the-shelf mixing equipment. Based on laboratory- and bench-scale testing, Mulled Coal can be stored, shipped and burned without causing any of the plugging, sticking, carryback and freezing problems normally associated with wet coal. On the other hand, Mulled Coal … more
Date: May 1, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy Information Administration quarterly coal report, October--December 1992

Description: The United States produced just over 1 billion short tons of coal in 1992, 0.4 percent more than in 1991. Most of the 4-million-short-ton increase in coal production occurred west of the Mississippi River, where a record level of 408 million short tons of coal was produced. The amount of coal received by domestic consumers in 1992 totaled 887 million short tons. This was 7 million short tons more than in 1991, primarily due to increased coal demand from electric utilities. The average price of … more
Date: May 21, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pelletizing/reslurrying as a means of distributing and firing clean coal. Final quarterly technical progress report No. 7, Appendices

Description: This volume contains appendices for: atomization test report; cost estimation model--pelletization material balance and equipment selection; cost estimation model--pelletization capital investment estimates; cost estimation--pelletization operating cost estimates; cost estimation model--pellet-CWF formulation material balance and equipment selection; cost estimation model--pellet-CWF capital investment estimates; cost estimation model--pellet-CWF operating cost estimates; and cost estimation mo… more
Date: June 9, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pelletizing/reslurrying as a means of distributing and firing clean coal. Final quarterly technical progress report No. 7, January 1, 1992-- March 31, 1992

Description: Work in this quarter focused on completing (1) the final batch of pilot-scale disk pellets, (2) storage, handling, and transportation evaluation, (3) pellet reslurrying and atomization studies, and (4) cost estimation for pellet and slurry production. Disk pelletization of Elkhorn coal was completed this quarter. Pellets were approximately 1/2- to 3/4-in. in diameter. Pellets, after thermal curing were strong and durable and exceeded the pellet acceptance criteria. Storage and handling tests in… more
Date: June 9, 1992
Creator: Conkle, H. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Roles of Additives and Surface Control in Slurry Atomization]. Quarterly Report

Description: As reported in the quarterly report of March of 1992, the relative viscosity of a Newtonian Coal Water Slurry (CWS) in the presence of an anionic polymeric dispersant is an order of magnitude higher than the prediction of the well established Krieger-Dougherty Equation which describes the relative viscosity of a non-aggregated Newtonian suspension as a function of particle volume fraction. Note that the anionic dispersant is used in such a quantity that the resulting interparticle electrostatic… more
Date: June 1, 1992
Creator: Tsai, S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development and utilization of new diagnostics for dense-phase pneumatic transport. Final report

Description: In 1988, we proposed a program to develop new diagnostics for dense gas-solid suspensions, with particular interest toward the dense pneumatic transport of cohesive solid plugs. This program included three main objectives, as follows: to develop probes for local measurements of (1) local particle volume fraction and (2) individual particle velocities in dense gas-solid flows; and (3) to construct a bench-scale setup for transporting dense cohesive solid plugs and to analyze data from the result… more
Date: March 2, 1992
Creator: Louge, M. & Jenkins, J. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pelletizing/reslurrying as a means of distributing and firing clean coal. Final quarterly technical progress report No. 4, April 1, 1991--June 30, 1991

Description: The objective of this study is to develop technology that permits the practical and economic preparation, storage, handling, and transportation of coal pellets, which can be formulated into Coal-Water Fuels (CWFs) suitable for firing in small- and medium-size commercial and industrial boilers, furnaces, and engines.
Date: September 20, 1991
Creator: Conkle, H. N.; Raghavan, J. K.; Smit, F. J. & Jha, M. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pelletizing/reslurrying as a means of distributing and firing clean coal. Final quarterly technical progress report No. 6, October 1, 1991--December 31, 1991

Description: The objective of this study is to develop technology that permits the practical and economic preparation, storage, handling, and transportation of coal pellets, which can be reslurried into Coal water fuels (CWF) suitable for firing in small- and medium-size commercial and industrial boilers, furnaces, and engines. The project includes preparing coal pellets and capsules from wet filter cake that can be economically stored, handled, transported, and reslurried into a CWF that can be suitably at… more
Date: March 17, 1992
Creator: Conkle, H. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pelletizing/reslurrying as a means of distributing and firing clean coal. Final quarterly technical progress report No. 5, July 1, 1991--September 30, 1991

Description: The objective of this study is to develop technology that permits the practical and economic preparation, storage, handling, and transportation of coal pellets, which can be reslurried into Coal water fuels (CWF) suitable for firing in small- and medium-size commercial and industrial boilers, furnaces, and engines. The project includes preparing coal pellets and capsules from wet filter cake that can be economically stored, handled, transported, and reslurried into a CWF that can be suitably at… more
Date: November 21, 1991
Creator: Conkle, H. N.; Raghavan, J. K.; Smit, F. J. & Jha, M. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preparation and combustion of Yugoslavian lignite-water fuel, Task 7.35. Topical report, July 1991--December 1993

Description: Yugoslavia`s interest in lignite-water fuel (LWF) stems from its involvement in an unusual power project at Kovin in northern Serbia. In the early 1980s, Electric Power of Serbia (EPS) proposed constructing a 600-MW power plant that would be fueled by lignite found in deposits along and under the Danube River. Trial underwater mining at Kovin proved that the dredging operation is feasible. The dredging method produces a coal slurry containing 85% to 90% water. Plans included draining the water … more
Date: March 1, 1994
Creator: Anderson, C. M.; DeWall, R. A.; Ljubicic, B. R.; Musich, M. A. & Richter, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Correlation of stability/rheology relationship with coal: Properties and chemical additives. Final technical report, September 1988--November 1991

Description: Coal-water slurries have the potential of a near term replacement for fuel oil. In order to gain the fundamental understanding of the preparation and handling of coal-water slurries, experiments were performed to identify the relationship between the coal content of a given coal-water slurry and its physical and chemical properties. The objectives of this program were: Investigate the relationship between the chemical and physical properties of coal and the rheology of coal-water slurry Define … more
Date: February 19, 1992
Creator: Ohene, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Energy Policy Act transportation rate study: Availability of data and studies

Description: Pursuant to Section 1340(c) of the Energy Policy Act of 1992 (EPACT), this report presents the Secretary of Energy`s review of data collected by the Federal Government on rates for rail and pipeline transportation of domestic coal, oil, and gas for the years 1988 through 1997, and proposals to develop an adequate data base for each of the fuels, based on the data availability review. This report also presents the Energy Information Administration`s findings regarding the extent to which any Fed… more
Date: October 13, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Storage, transportation, and atomization of CWF for residential applications. Final report, September 27, 1989--November 15, 1991

Description: This project investigated the properties and behavior with regard to handling, storage, and atomization in small-scale applications of different CWFs (coal water fuels) prepared from different parent coals and various beneficiation techniques as well as consideration for bulk storage and distribution. The CWFs that were prepared included Upper Elkhorn No. 3, Illinois No. 6, and Upper Wyodak coal cleaned by heavy media separation. Also, several CWFs were prepared with Upper Elkhorn No. 3 coal cl… more
Date: November 1, 1991
Creator: Grimanis, M. P.; Breault, R. W.; Smit, F. J. & Jha, M. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear magnetic resonance studies of granular flows: Technical progress report, quarter ending 09/30/93

Description: This Technical Progress Report for the quarter ending 09/30/93 describes work on two tasks which are part of nuclear magnetic resonance studies of granular flows. (1) Research has been directed toward improving concentration measurements under reasonably fast conditions. (2) The process continues of obtaining comprehensive velocity, concentration, and diffusion information at several angular velocities of the cylinder for seeds (mustard, sesame, and sunflower seeds) flowing in a half-filled cyl… more
Date: October 27, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Effect of Turbulence on the Stability of Liquid Jets and the Resulting Droplet Size Distributions. Fourth quarterly technical report, October 1, 1993--December 31, 1993

Description: In this progress report the authors report on progress in making experimental measurements to describe the rheological properties of non-Newtonian fluids. Non-Newtonian liquids exhibit a non linear relationship between the shear stress and the shear rate. A typical time-dependent rheological phenomenon is thixotropy. Thixotropic fluids show a limited decrease in the shear viscosity of the fluid with time under a suddenly applied constant stress. Thixotropic fluids also show a hysteresis loop an… more
Date: December 31, 1993
Creator: Mansour, A. & Chigier, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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