73 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Lignite"  
Results: 1 - 24 next
open access

Evaluation of the mouse micronucleus test as compared with the in vivo cytogenics test for mutagenicity of synthetic fuel materials. Topical report

Description: This brief topical report, provides information on a comparison of the mouse micronucleus mutagenic test proposed by a DOE contractor (FMC) for coal derived chemicals; as compared with the in vivo cytogenic test. The latter procedure is repotedly preferred by EPA authorities connected with implementation of the toxic substances control act (TOSCA). This evaluation was performed at the request of Headquarters DOE program management staff. The mouse micronucleus test takes less time and costs app… more
Date: March 9, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Head assembly for multiposition borehole extensometer

Description: A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight… more
Date: June 9, 1981
Creator: Frank, D.N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Mild coal gasification: Product separation, pilot-unit support, twin screw heat transfer, and H sub 2 S evolution

Description: Our general objective is to further the development of efficient continuous mild coal gasification processes. Our efforts this year have been in four main areas. A new thrust has been to identify and develop efficient processes to separate the vapor product stream into particulate-free liquid and mist-free gas. We continued work aimed at predicting heat transfer rates (hence throughput) in externally-heated twin-screw pyrolyzers. We sought to provide technical support for the design, installati… more
Date: August 9, 1991
Creator: Camp, D. W.; Wallman, P. H. & Coburn, T. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LLNL Underground-Coal-Gasification Project. Quarterly progress report, July-September 1981

Description: We have continued our laboratory studies of forward gasification in small blocks of coal mounted in 55-gal drums. A steam/oxygen mixture is fed into a small hole drilled longitudinally through the center of the block, the coal is ignited near the inlet and burns toward the outlet, and the product gases come off at the outlet. Various diagnostic measurements are made during the course of the burn, and afterward the coal block is split open so that the cavity can be examined. Development work con… more
Date: November 9, 1981
Creator: Stephens, D.R. & Clements, W. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced, Soluble Hydroliquefaction and Hydrotreating Catalysts Annual Report: 1990-1991

Description: The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations. Heteropolyanions (HPAs) offer the opportunity to develop soluble forms of surface confined catalysts. HPAs are multi-functional catalysts that could be used to promote both hyd… more
Date: September 9, 1991
Creator: Laine, Richard M & Stoebe, Thomas
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental mechanisms in flue gas conditioning

Description: The overall goal of this research project is to formulate a mathematical model of flue gas conditioning. This model will be based on an understanding of why ask properties, such as cohesivity and resistivity, are changed by conditioning. Such a model could serve as a component of the performance models of particulate control devices where flue gas conditioning is used. There are two specific objectives of this research project, which divide the planned research into two main parts. One part of … more
Date: January 9, 1992
Creator: Bush, P. V. & Snyder, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Improved Recovery Boiler Performance Through Control of Combustion, Sulfur, and Alkali Chemistry

Description: This project involved the following objectives: 1. Determine black liquor drying and devolatilization elemental and total mass release rates and yields. 2. Develop a public domain physical/chemical kinetic model of black liquor drop combustion, including new information on drying and devolatilization. 3. Determine mechanisms and rates of sulfur scavenging in recover boilers. 4. Develop non-ideal, public-domain thermochemistry models for alkali salts appropriate for recovery boilers 5. Develop d… more
Date: June 9, 2008
Creator: Baxter, Larry L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Memo to Skip Laitner of EPA: initial comments on 'The internetbegins with coal'

Description: This memo explores the assumptions in Mark P. Mills' report titled 'The Internet Begins with Coal' that relate to current electricity use 'associated with the Internet'. We find that Mills has significantly overestimated electricity use, in some cases by more than an order of magnitude. We adjust his estimates to reflect measured data and more accurate assumptions, which reduces Mills' overall estimate of total Internet-related electricity use by about a factor of eight.
Date: December 9, 1999
Creator: Koomey, Jonathan G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Utilization of Partially Gasified Coal for Mercury Removal

Description: In this project, General Electric Energy and Environmental Research Corporation (EER) developed a novel mercury (Hg) control technology in which the sorbent for gas-phase Hg removal is produced from coal in a gasification process in-situ at a coal burning plant. The main objective of this project was to obtain technical information necessary for moving the technology from pilot-scale testing to a full-scale demonstration. A pilot-scale gasifier was used to generate sorbents from both bituminous… more
Date: September 9, 2008
Creator: Samuelson, Chris; Maly, Peter & Moyeda, David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Full scale demonstration of low-NO sub x cell burner retrofit

Description: The overall objective of the Full-Scale Demonstration of Low-NO{sub x} Cell Burner Retrofit project is to demonstrate the cost-effective reduction of NO{sub x} generated by a large based-loaded (70% capacity factor or greater), coal-fired utility boiler. Specific objectives include: (1) At least 50% NO{sub x} reduction over standard two-nozzle cell burners, without degradation of boiler performance or life; (2) Acquire and evaluate emission and boiler performance data before and after the retro… more
Date: August 9, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nitrogen oxide abatement by distributed fuel addition

Description: This program is designed to develop techniques for NO{sub x} abatement by distributed fuel addition. It is expected that multiple fuel and air addition in the post flame of a combustion process will increase free radical concentrations which destroy nitrogenous species as they decay toward their equilibrium concentrations. This concept will be investigated under both fuel rich and fuel lean conditions in the reburn zone. This report is a brief description of the proposed experimental plan. Resu… more
Date: November 9, 1987
Creator: Wendt, J.O.L. & Meraab, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Molecular biological enhancement of coal desulfurization: Cloning and expression of the sulfoxide/sulfone/sulfonate/sulfate genes in Pseudomonads and Thiobacillae

Description: This department of energy-sponsored mission-oriented research project currently has three emphases. They are: (1) determining the kinetics of monohydroxybiphenyl (OH-BP) production in batch culture by N1-36, an unidentified soil isolate, when the organism is presented with dibenzothiophene (DBT) or dibenzosulfone (DBTO{sub 2}); (2) establishing reliable methods for physically characterizing R68.45, a broad host range plasmid; and (3) attempting to elicit a physiologically consistent and genetic… more
Date: November 9, 1991
Creator: Krawiec, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fundamental mechanisms in flue-gas conditioning

Description: The overall goal of this research project is to formulate a mathematical model of flue gas conditioning. This model will be based on an understanding of why ash properties, such as cohesivity and resistivity, are changed by conditioning. Such a model could serve as a component of the performance models of particulate control devices where flue gas conditioning is used. There are two specific objectives of this research project, which divide the planned research into two main parts. One part of … more
Date: January 9, 1992
Creator: Dahlin, R. S.; Vann Bush, P. & Snyder, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bench-scale co-processing

Description: The objective of this contract is to extend and optimize UOP's single-stage slurry-catalyzed co-processing scheme. Particular emphasis is given to defining and improving Mo catalyst utilization and cost, evaluating alternative and disposable slurry-catalyst systems, and improving catalyst recycle and recovery techniques. During the previous quarter, a catalyst concentration study was completed. The study showed that the highest nondistillable conversions and liquid yields were achieved using li… more
Date: July 9, 1990
Creator: Nafis, D.A.; Gatsis, J.G.; Lea, C. & Miller, M.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced, soluble hydroliquefaction and hydrotreating catalysts. Annual report No. 1, August 7, 1990--August 6, 1991

Description: The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations. Heteropolyanions (HPAs) offer the opportunity to develop soluble forms of surface confined catalysts. HPAs are multi-functional catalysts that could be used to promote both hyd… more
Date: September 9, 1991
Creator: Laine, R. M & Stoebe, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Molecular biological enhancement of coal desulfurization: Cloning and expression of the sulfoxide/sulfone/sulfonate/sulfate genes in Pseudomonads and Thiobacillae. Ninth quarterly report, [July--October 1991]

Description: This department of energy-sponsored mission-oriented research project currently has three emphases. They are: (1) determining the kinetics of monohydroxybiphenyl (OH-BP) production in batch culture by N1-36, an unidentified soil isolate, when the organism is presented with dibenzothiophene (DBT) or dibenzosulfone (DBTO{sub 2}); (2) establishing reliable methods for physically characterizing R68.45, a broad host range plasmid; and (3) attempting to elicit a physiologically consistent and genetic… more
Date: November 9, 1991
Creator: Krawiec, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Full scale demonstration of low-NO{sub x} cell burner retrofit. Public design report

Description: The overall objective of the Full-Scale Demonstration of Low-NO{sub x} Cell Burner Retrofit project is to demonstrate the cost-effective reduction of NO{sub x} generated by a large based-loaded (70% capacity factor or greater), coal-fired utility boiler. Specific objectives include: (1) At least 50% NO{sub x} reduction over standard two-nozzle cell burners, without degradation of boiler performance or life; (2) Acquire and evaluate emission and boiler performance data before and after the retro… more
Date: August 9, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Applications of Micellar Enzymology to Clean Coal Technology. Twelfth Quarterly Report

Description: This project is designed to develop methods for precombustion coal remediation by implementing recent advances in enzyme biochemistry. The novel approach of this study is incorporation of hydrophilic oxidative enzymes in reverse micelles in an organic solvent. Enzymes from commercial sources or microbial extracts are being investigated for their capacity to remove organic sulfur from coal by oxidation of the sulfur groups, splitting of C-S bonds and loss of sulfur as sulfuric acid. Dibenzothiop… more
Date: March 9, 1993
Creator: Walsh, C. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An external peer review of the U.S. Department of Energy`s assessment of ``damages and benefits of the fuel cycles: Estimation methods, impacts, and values``. Final report

Description: The need for better assessments of the ``external`` benefits and costs of environmental effects of various fuel cycles was identified during the development of the National Energy Strategy. The growing importance of this issue was emphasized by US Department of Energy (DOE) management because over half of the states were already pursuing some form of social costing in electricity regulation and a well-established technical basis for such decisions was lacking. This issue was identified as a maj… more
Date: August 9, 1993
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development and testing of industrial scale, coal fired combustion system, Phase 3. First quarterly technical progress report, Part 1, October 1, 1991--December 31, 1991; Part 2, January 1, 1992--March 31, 1992

Description: The primary objective of the present Phase 3 effort is to perform the final testing at a 20 MNBtu/hr commercial scale of an air cooled, slogging coal combustor for application to industrial steam boilers and power plants. The focus of the test effort will be on combustor durability, automatic control of the combustor`s operation, and optimum environmental control of emissions inside the combustor. In connection with the latter, the goal is to achieve 0.4 lb/MMBtu of SO{sub 2} emissions, 0.2 lb/… more
Date: May 9, 1992
Creator: Zauderer, B.
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

The Effect of Chemical Additives on the Synthesis of Ethanol. Technical Progress Report No. 9, September 16, 1989--December 15, 1989

Description: The objective of this research is to elucidate the role of various chemical additives on ethanol synthesis over Rh- and Ni-based catalysts. Chemical additives used for this study will include S, P, Ag, Cu, Mn, and Na which have different electronegativities. The effect of additives on the surface state of the catalysts, heat of adsorption of reactant molecules, reaction intermediates, reaction pathways, reaction kinetics, and product distributions is/will be investigated by a series of experime… more
Date: April 9, 1990
Creator: Chuang, S. S. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Synthesis of a naphthalene-hydroxynaphthalene polymer model compound

Description: This goal is to synthesize a new naphthalene hydroxynaphthalene polymer model compound for use in coal combustion studies. na effort will also require the development of a synthetic procedure to synthesize this compound since it is unreported. As a result of our synthesis efforts, a number of potential precursors and Area's Analytical Section for characterization and identification. The synthesis of the pre-Bakefite intermediate has been identified as being key to the evaluation of our syntheti… more
Date: October 9, 1990
Creator: Kwong, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen