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A Novel Coal Feeder for Production of Low Sulfur Fuel

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: January 1, 1990
Creator: Khang, S. J. & Keener, T. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Novel Coal Feeder for Production of Low Sulfur Fuel

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: January 1, 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
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Production of low-cost hydrogen

Description: The overall objective of the proposed effort is to verify at the laboratory scale, the ability of the MTCI indirectly heated fluid-bed gasifier to economically produce a hydrogen-rich product gas from liquefaction by-product streams and from char produced in mild gasification processes. Specifically, the proposed effort is aimed at developing an experimental technology data base by defining the process characteristics that would be required for process integration into an overall liquefaction s… more
Date: January 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TRW advanced slagging coal combustor utility demonstration

Description: The TRW Advanced Entrained Coal Combustor Demonstration Project consists of retrofitting Orange and Rockland (O R) Utility Corporation's Lovett Plant Unit No. 3 with four (4) slagging combustors which will allow the gas/oil unit to fire 2.5% sulfur coal. The slagging combustor process will provide NO{sub x} and SO{sub x} emissions that meet NSPS and New York State Environmental Standards. The TRW-Utility Demonstration Unit (UDU) is responsible for the implementation of program policies and over… more
Date: January 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mild gasification technology development process: Task 3, Bench-scale char upgrading study, February 1988--November 1990

Description: The overall objective of this program is to develop mild gasification technology and co-product utilization. The objective of Task 3 was to investigate the necessary steps for upgrading the mild gasification char into potential high-market-value solid products. Recommendations of the Task 1 market survey section formed the basis for selecting three value-added solid products from mild gasification char: form coke, smokeless fuel, and activated adsorbent char. The formation and testing for the f… more
Date: December 1, 1990
Creator: Carty, R. H.; Onischak, M.; Babu, S. P.; Knight, R. A.; Wootten, J. M. & Duthie, R. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rapid sulfur capture studies at high temperatures

Description: Determine conditions that would reproduce optimum sulfur capture ( super-equilibrium'') behavior. No attempt was made to extract kinetic data for calcination or sulfur capture, as might be done in a comprehensive study of sorbent behavior. While some interesting anomalies are present in the calcination data and in the limited surface area data, no attempt was made to pursue those issues. Since little sulfur capture was observed at operating conditions where super-equilibrium'' might be expected… more
Date: December 1, 1990
Creator: Richards, G.A.; Lawson, W.F.; Maloney, D.J. & Shaw, D.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An investigation of the mechanisms of calcination and sulfation in coal-water mixtures

Description: The purpose of this investigation is to study the mechanisms of sulfur capture when burning coal-water-limestone mixtures (CWLM) in fluidized beds. Special care is taken to make comparisons with to dry coal and sorbent under comparable experimental conditions. A series of experiments were performed in an eight-inch diameter bubbling fluidized bed combustor to address this problem. 33 refs., 17 figs., 5 tabs.
Date: September 21, 1990
Creator: Christofides, N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Global approach for enhanced mass transfer effects: In-duct injection FGD processes

Description: This topical report describes the experimental results from a global investigation of in-duct SO{sub 2} capture by lime-slurry sprays. To large extent the experiments were guided by a parallel model-development effort. The data were used to test and refine various assumptions made by the model about internal vs. external mass transfer, temperature, humidity, SO{sub 2} concentration and slurry concentration. Also, the experiments performed a scoping function for the overall DOE duct injection pr… more
Date: May 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The use of wet limestone systems for combined removal of SO sub 2 and NO sub x from flue gas

Description: A new approach by utilizing yellow phosphorus in conventional wet limestone systems for high efficiency control of SO{sub 2} and NO{sub x} emissions from power plants has been developed. The addition of yellow phosphorus in the system induces the production of O{sub 3} which subsequently oxidizes NO to NO{sub 2}. The resulting NO{sub 2} dissolves readily and can be reduced to form ammonium ions by dissolved SO{sub 2} under appropriate conditions. Yellow phosphorus is oxidized to yield P{sub 2}O… more
Date: March 1, 1990
Creator: Lee, G.C. (Bechtel Corp., San Francisco, CA (USA)); Shen, D.X.; Littlejohn, D. & Chang, S.G. (Lawrence Berkeley Lab., CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LIMB demonstration project extension

Description: The purpose of the DOE limestone injection multistage burner (LIMB) Demonstration Project Extension is to extend the data base on LIMB technology and to expand DOE's list of Clean Coal Technologies by demonstrating the Coolside process as part of the project. The main objectives of this project are: to demonstrate the general applicability of LIMB technology by testing 3 coals and 4 sorbents (total of 12 coal/sorbent combinations) at the Ohio Edison Edgewater plant; and to demonstrate that Cool… more
Date: September 21, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aquifer Characteristics Data Report for the Weldon Spring Site chemical plant/raffinate pits and vicinity properties for the Weldon Spring Site Remedial Action Project, Weldon Spring, Missouri

Description: This report describes the procedures and methods used, and presents the results of physical testing performed, to characterize the hydraulic properties of the shallow Mississippian-Devonian aquifer beneath the Weldon Spring chemical plant, raffinate pits, and vicinity properties. The aquifer of concern is composed of saturated rocks of the Burlington-Keokuk Limestone which constitutes the upper portion of the Mississippian-Devonian aquifer. This aquifer is a heterogeneous anisotropic medium whi… more
Date: November 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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TRW utility demonstration unit

Description: The TRW Advanced Entrained Coal Combustor Demonstration Project consists of retrofitting Orange and Rockland (O R) Utility Corporation's Lovett Plant Unit No. 3 with four (4) slagging combustors which will allow the gas/oil unit to fire 2.5% sulfur coal. The slagging combustor process will provide NO{sub x} and SO{sub x} emissions that meet NSPS and New York State Environmental Standards. During this report period, activity continued to address the total program funding shortfall. Ideas and res… more
Date: January 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final report on process modeling of cupola furnaces

Description: This report describes the first phase of the AFS/DOE program on mathematical modeling of cupola behavior, covering the period May 19, 1989 to July 19, 1990. The objective of the program is to develop a comprehensive mathematical model of the cupola furnace for on-line and off-line process control and optimization. The work is being carried out by five organizations: Massachusetts Institute of Technology with responsibility for heat transfer and fluid flow modeling, and incorporation of the chem… more
Date: July 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comprehensive report to Congress: Clean Coal Technology Program: LIFAC sorbent injection desulfurization demonstration project: A project proposed by: LIFAC North America, Inc

Description: This report describes a project proposed by LIFAC North America, Inc., (LIFAC NA). The host site will be a coal-fired powerplant of Richmond Power Light in Indiana. LIFAC technology uses upper-furnace limestone injection with patented humidification of the flue gas to remove 75--80% of the sulfur dioxide (SO{sub 2}) in the flue gas. In the LIFAC process, limestone is injected into the upper part of the furnace where the temperatures are sufficiently high to calcine the calcium carbonate (CaCO{s… more
Date: October 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Bacterially induced precipitation of CaCO sub 3 : An example from studies of cyanobacterial mats

Description: Bacteria induce the precipitation of calcium carbonate in the laboratory and in nature by altering their chemical environment. Geologists are recognizing the possibility that bacterially induced precipitates may form significant mineral deposits, unfortunately, there are currently no sound criteria by which they can be recognized in recent sediments, or in the rock record. Cultures of aerobic and facultative bacteria from cyanobacterial mats on Andros Island, Bahamas, and Baffin Bay, Texas, ind… more
Date: April 30, 1990
Creator: Chafetz, H. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Viscosity, electrical conductivity, and cesium volatility of ORNL (Oak Ridge National Laboratory) vitrified soils with limestone and sodium additives

Description: Engineering- and pilot-scale tests of the in situ vitrification (ISV) process have been conducted for Oak Ridge National Laboratory (ORNL) to successfully demonstrate the feasibility of applying ISV to seepage trenches and pits at ORNL. These sites contain soil that overlies crushed limestone fill; therefore, the ISV process is applied to a soil-limestone mixture. Previous testing indicated that while a good retention level of {sup 137}Cs and {sup 90}Sr was achieved in the melt, it would be des… more
Date: May 1, 1990
Creator: Shade, J. W. & Piepel, G. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Transport studies of radon in limestone underlying houses

Description: In hilly limestone terrains of the southern Appalachians, subterranean networks of solution cavities and fissures present circulatory systems facilitating convective and advective transport of radon-bearing gas. Evidence suggests that the primary driving forces for transport are aerostatic pressure differentials created by the difference between the underground and the outside air temperatures. Examples are presented of houses experiencing elevated indoor radon levels as a consequence of commun… more
Date: January 1, 1990
Creator: Gammage, R. B.; Dudney, C. S.; Wilson, D. L. & Saultz, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LIMB Demonstration Project Extension

Description: The DOE LIMB Demonstration Project Extension is a continuation of the EPA Limestone Injection Multistage Burner (LIMB) Demonstration. EPA ultimately expects to show that LIMB is a low cost control technology capable of producing moderate SO{sub x} and NO{sub x} control (50--60 percent) with applicability for retrofit to the major portion of the existing coal-fired boiler population. The current EPA Wall-Fired LIMB Demonstration is a four-year project that includes design and installation of a L… more
Date: September 21, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Using power series expansions of moduli to interpolate between release curves from dynamic tests: Technique and application

Description: Recently an appreciable number of continuous release profiles have been measured from dynamic experiments with geological materials. For each material an empirical generalization of the available release curves may be constructed to allow easy application of the experimental data to problems in much the same way as a linear shock velocity -- particle velocity fit allows easy application of Hugoniot data. This generalization is made in two steps. The first is to compute the Eulerian axial modulu… more
Date: August 1, 1990
Creator: Furnish, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of Dust Cake Filtration at High Temperature with Effluence from an Atmospheric Fluidized-bed Combustor

Description: In the spring of 1989, two separate test series were simultaneously conducted at the US Department of Energy's (DOE's) Morgantown Energy Technology Center (METC) to examine applied and fundamental behavior of dust cake filtration under high temperature and high pressure (HTHP) conditions. The purpose was to provide information on dust-cake filtration properties to gas stream cleanup researchers associated with the Tidd 70 megawatt (MW) pressurized fluidized-bed combustor (PFBC). The two test fa… more
Date: August 1, 1990
Creator: Dennis, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Iowa State Mining and Mineral Resources Research Institute

Description: This final report describes the activities of the Iowa State Mining and Mineral Resources Research Institute (ISMMRRI) at Iowa State University for the period July 1, 1989, to June 30, 1990. Activities include research in mining- and mineral-related areas, education and training of scientists and engineers in these fields, administration of the Institute, and cooperative interactions with industry, government agencies, and other research centers. During this period, ISMMRRI has supported resear… more
Date: August 1, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Comparative analyses for selected clean coal technologies in the international marketplace

Description: Clean coal technologies (CCTs) are being demonstrated in research and development programs under public and private sponsorship. Many of these technologies could be marketed internationally. To explore the scope of these international opportunities and to match particular technologies with markets appearing to have high potential, a study was undertaken that focused on seven representative countries: Italy, Japan, Morocco, Turkey, Pakistan, the Peoples' Republic of China, and Poland. The result… more
Date: July 1, 1990
Creator: Szpunar, C. B. & Gillette, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reduction of NO sub x and SO sub 2 Emissions from Coal Burning Pulse Combustors

Description: The following report summarizes work done under DOE Grant No. FG-88PC88918 during the period April 1, 1990 through June 30, 1990. This project is concerned with the reduction of sulfur dioxide and nitrogen oxides emissions from Rijke type coal burning pulse combustors by sorbent addition and combustion staging. The following work will be described in this report: (1) a second series of air staging tests to determine the effectiveness of substoichiometric primary coal combustion followed by seco… more
Date: August 1, 1990
Creator: Powell, E. A. & Zinn, B. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Establishment of an oil and gas database for increased recovery and characterization of oil and gas carbonate reservoir heterogeneity

Description: The objectives of this project are to augment the National Reservoir Database (TORIS database) and to increase our understanding of geologic heterogeneities that affect the recoveries of oil and gas from carbonate reservoirs in the State of Alabama and to identify those resources that are producible at moderate cost. These objectives will be achieved through detailed geological, engineering, and geostatistical characterization of typical Jurassic Smackover Formation hydrocarbon reservoirs in se… more
Date: January 1, 1990
Creator: Mancini, Ernest A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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