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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
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Sonic enhanced ash agglomeration and sulfur capture

Description: The major objective of the Phase 1 test program is to confirm the feasibility of the Manufacturing and Technology Conversion International, Inc. bimodal particle size approach to enhance particulate control by acoustic ash agglomeration. An ancillary objective of the Phase 1 effort is to demonstrate and confirm the feasibility of an acoustic field to enhance sulfur capture by increasing sorbent reactivity. Phase 1 tests are designed to cover the frequency range between 50 and 1400 Hz, establish… more
Date: January 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary study of the favorability for uranium in the Madera Limestone, and Cutler and Chinle Formations of the Sierra Nacimiento-Jemez Mountains area, New Mexico

Description: Small, surficial, secondary uranium deposits are present in several formations in the Sierra Nacimiento-Jemez Mountains region, but none of significant size are known. Field surveys indicate that the deposits are laterally discontinuous and are, in most cases, associated with carbonaceous debris. Mineral contents of as much as 0.18 percent U/sub 3/O/sub 8/ are recorded. There are 2 known deposits in the Pennsylvanian Madera Limestone, 18 in the Permian Cutler Formation, and 3 in the Triassic Ch… more
Date: January 1, 1978
Creator: Vizcaino, H. P.; O'Neill, A. J. & Dotterer, F. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studies of nuclear-waste migration in geologic media. Annual report, November 1976--October 1977

Description: The confinement of nuclear wastes in geologic formations is being considered as a method of permanently disposing of the waste. Laboratory experiments (column infiltration, static absorption, and batch partitioning experiments) were performed with nuclides of Cs, Pu, Np, and Am to examine the migratory characteristics of long-lived radionuclides that could be mobilized by groundwaters infiltrating a nuclear waste repository and the surrounding geologic body. In column infiltration experiments, … more
Date: March 1, 1978
Creator: Seitz, M.G.; Rickert, P.G.; Fried, S.M.; Friedman, A.M. & Steindler, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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LIFAC Sorbent Injection Desulfurization Demonstration Project

Description: LIFAC combines upper-furnace limestone injection followed by post- furnace humidification in an activation reactor located between the air preheater and the ESP. The process produces a dry and stable waste product that is partially removed from the bottom of the activation reactor and partially removed at the ESP. In November 1990, after a ten (10) month negotiation period, LIFAC NA and the US DOE entered into a Cooperative Agreement for the design, construction, and demonstration of the LIFAC … more
Date: January 1, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modeling of Integrated Environmental Control Systems for Coal-Fired Power Plants Quarterly Report: June-September 1989

Description: The general goal of this research project is to enhance, and transfer to DOE, a new computer simulation model for analyzing the performance and cost of environmental control systems for coal-fired power plants. Systems utilizing pre-combustion, combustion, or post-combustion control methods, individually or in combination, may be considered. A unique capability of this model is the probabilistic representation of uncertainty in model input parameters. This stochastic simulation capability allow… more
Date: October 1, 1989
Creator: Rubin, E. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Progress Report No. 15, January 1-March 31, 1980

Description: A new regenerative sorbent process for desulfurizing fluidized-bed combustion gases is presented. The sorbent was developed by Brookhaven National Laboratory and is prepared from commercial silicate bearing portland cement. The chemical reactions and mechanical procedures involved in preparing the sorbent, in desulfurizing the flue gas, in regenerating the spent sorbent, and in producing elemental sulfur from the regenerator product gas are discussed. The performance of natural limestone sorben… more
Date: April 1, 1980
Creator: Albanese, A. S. & Sethi, D. S.
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
open access

NUCLA Circulating Atmospheric Fluidized Bed Demonstration Project

Description: The objective of this DOE Cooperative Agreement is to conduct a cost-shared clean coal technology project to demonstrate the feasibility of circulating fluidized bed combustion technology and to evaluate economic, environmental, and operational benefits of CFB steam generators on a utility scale. At the conclusion of the Phase 2 program, testing related to satisfying these objectives was completed. Data analysis and reporting are scheduled for completion by October 1991. (VC)
Date: February 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Prediction of limestone requirements for SO/sub 2/ emission control in atmospheric pressure fluidized-bed combustion

Description: The limestone-SO/sub 2/ reactivity as determined on a thermogravimetric analyzer was used to estimate the quantity of limestone required to meet the SO/sub 2/ emission standard in atmospheric fluidized-bed coal combustors. Comparison of laboratory TGA calcium utilization with pilot plant experimental results were made. Estimates of SO/sub 2/ retention in a carbon burnup cell were made for various limestone feed options. From this information, estimates of limestone requirements for an AFBC-CBC … more
Date: January 1, 1977
Creator: Snyder, R. B.; Wilson, W. I. & Johnson, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Environmental monitoring for the DOE coolside and LIMB demonstration extension projects

Description: The purpose of this document is to present environmental monitoring data collected during the US DOE Limestone Injection Multistage Burner (LIMB) Demonstration Project Extension. The objective of the LIMB program is to demonstrate the sulfur dioxide (SO{sub 2}) and nitrogen oxide (NO{sub x}) emission reduction capabilities of the LIMB system. The LIMB system is a retrofit technology to be used for existing coal-fired boilers equipped with electrostatic precipitators. (VC)
Date: February 1, 1992
Creator: White, T.; Contos, L. & Adams, L. (Radian Corp., Research Triangle Park, NC (United States). Progress Center)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Migration of radionuclides following shallow land burial

Description: A study of radionuclide migration was conducted at a facility used from 1944 to 1949 for the shallow land burial of radwaste produced during operations with two reactors and related nuclear research. It is situated in glacial drift 45 m thick. Underlying the drift is a generally level Silurian dolomite bedrock 60 m thick. The thickness of the drift decreases as the surface slopes downhill (north) until the dolomite reaches the surface and forms the bed of a river, 700 m to the north. This study… more
Date: January 1, 1980
Creator: Sedlet, J. & Golchert, N.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Regenerative process for desulfurization of high temperature combustion and fuel gases. Quarterly progress report No. 5, April 1--June 30, 1977

Description: The sulfation rate of reagent-grade monocalcium silicate is of the same order of magnitude as that of limestone and higher than that of reagent-grade calcium oxide. It has been confirmed that the sulfated monocalcium silicate is more regenerable than the sulfated lime, i.e., the regeneration rate is higher with the silicate. X-ray diffraction and IR absorption results indicate that silica is chemically bonded to the calcium sulfate in the sulfated calcium silicate. Construction of a micro-pilot… more
Date: January 1, 1977
Creator: Steinberg, M & Yang, R T
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Water release from heated concretes

Description: Water release from three concretes as a function of temperature has been determined experimentally. Limestone concrete releases more water at a moderate temperature than do magnetite or basalt concretes. The amount of water in the concretes is 6.2%, 6.3%, and 5% by weight for limestone, basalt and magnitite concretes, respectively. All of the concretes show three distinct weight losses as a function of temperature. By 450K, 52 to 75 percent of the water is lost - all of the water is lost by 750… more
Date: March 1, 1982
Creator: Kent, L.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal development of the Madison group aquifer: a case study

Description: A geothermal well has been drilled at the St. Mary's Hospital in Pierre, South Dakota. The well is 2176 feet deep and artesian flows 375 gpm at 106/sup 0/F. The well is producing fluids from the Mississippian Madison Group, a sequence of carbonate rocks deposited over several western states. The project was funded to demonstrate the goethermal potential of this widespread aquifer. This case study describes the development of the project through geology, drilling, stimulation, and testing.
Date: January 1, 1981
Creator: Martinez, J.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary study of uranium in Pennsylvanian and lower Permian strata in the Powder River Basin, Wyoming and Montana, and the Northern Great Plains

Description: Persistent and widespread radiometric anomalies occur in Pennsylvanian and Lower Permian strata in the subsurface of the northern Great Plains and the Powder River Basin. The primary host lithology of these anomalies is shale interbedded with sandstone, dolomite, and dolomitic sandstone. Samples from the project area indicate that uranium is responsible for some anomalies. In some samples there seems to be a correlation between high uranium content and high organic-carbon content, which possibl… more
Date: November 1, 1977
Creator: Dunagan, J.F. Jr. & Kadish, K.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of Acoustic Flow Instruments for Solid/Gas Pipe Flows

Description: Two nonintrusive acoustic flow sensing techniques are reported. One technique, passive in nature, simply measures the bandpassed acoustic noise level produced by particle/particle and particle/wall collisions. The noise levels, given in true RMS voltages or in autocorrelations, show a linear relationship to particle velocity but increase with solid concentration. Therefore, the passive technique requires calibration and a separate measure of solid concentration before it can be used to monitor … more
Date: May 1, 1986
Creator: Sheen, S. H. & Raptis, A. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microbial enhancement of oil production from carbonate reservoirs

Description: The goal of this work is to evaluate the potential for Microbial Enhanced Oil Recovery (MEOR) in carbonate reservoirs. Specific objectives include: review of the literature pertinent to MEOR in carbonate reservoirs, a study of the microbial ecology of carbonate reservoirs, isolation of microorganisms and their end-products of metabolism on carbonate pore structure, the recovery of residual oil from carbonates in model core systems, and development of models to examine and predict MEOR processes… more
Date: January 1, 1991
Creator: Tanner, R.S.; Knapp, R.M.; McInerney, M.J. & Udegbunam, E.O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reducing the environmental impact on solid wastes from a fluidized-bed combustor

Description: The use of three options for the reduction of the environmental impact of the solid sorbents used to control SO/sub 2/-emission in fluidized-bed coal combustion systems has been experimentally examined. The three options are: (1) the use of chemical reactivity enhancement agents, such as NaCl, (2) the regeneration and reuse of the limestone and (3) the use of synthetic sorbents. The quantity of waste decreases in the order (1) to (3) while the cost increases in the order (1) to (3). Both the us… more
Date: January 1, 1977
Creator: Johnson, I.; Vogel, G. J.; Montagna, J.; Shearer, J.; Snyder, R.; Swift, W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of luminescent bacteria as tracers for geological reservoir characterization

Description: This research project resulted from recognizing the problem of being unable to accurately distinguish communication between wells in producing oil zones which may or may not be continuous. Such a determination is necessary when considering Enhanced Oil Recovery (EOR) whether it is water flooding, carbon dioxide, or other methods which increase the sweep efficiency. Various kinds of chemical tracers are available, but they are expensive and many might be considered hazardous for underground aqui… more
Date: January 1, 1991
Creator: King, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Depositional sequence analysis and sedimentologic modeling for improved prediction of Pennsylvanian reservoirs

Description: The objectives of this research are to: (1) assist producers in locating and producing petroleum not currently being produced because of technological problems or the inability to identify details of reservoir compartmentalization (2) to decrease risk in field development, (3) accelerate the retrieval and analysis of baseline geoscience information for initial reservoir description. The interdisciplinary data sought in this research will be used to resolve specific problems in correlation of st… more
Date: January 1, 1992
Creator: Watney, W.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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