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Future aircraft and potential effects on stratospheric ozone and climate

Description: The purpose of this study is to extend the recent research examining the global environmental effects from potential fleets of subsonic and supersonic commercial aircraft. Initial studies with LLNL models of global atmospheric chemical, radiative, and transport processes have indicated that substantial decreases in stratospheric ozone concentrations could result from emissions of NO{sub x} from aircraft flying in the stratosphere, depending on fleet size and magnitude of the engine emissions. T… more
Date: October 1, 1991
Creator: Kinnison, D.E. & Wuebbles, D.J.
Item Type: Refine your search to only Article
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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Radiation Laboratory, University of Notre Dame. Quarterly report, July 1, 1977--September 30, 1977. [Short summaries of progress in 27 projects]

Description: Status of the following investigations is given: effect of molecular geometry on the electron affinity of H/sub 2/O; effect of non-spherically symmetric exchange potential in energy transfer and CIDEP; fragmentation patterns in the radiolysis of normal alkanes; properties of solvated electrons; temperature dependence of electron localization and impurity trapping in methanol and propanol; field-dependent electron mobility; aluminium cluster and organoaluminum systems; collision-induced atomic d… more
Date: October 13, 1977
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combustion of ultrafine coal/water mixtures and their application in gas turbines: Final report

Description: The feasibility of using coal-water fuels (CWF) in gas turbine combustors has been demonstrated in recent pilot plant experiments. The demands of burning coal-water fuels with high flame stability, complete combustion, low NO/sub x/ emission and a resulting fly ash particle size that will not erode turbine blades represent a significant challenge to combustion scientists and engineers. The satisfactory solution of these problems requires that the variation of the structure of CWF flames, i.e., … more
Date: October 1, 1987
Creator: Toqan, M.A.; Srinivasachar, S.; Staudt, J.; Varela, F. & Beer, J.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Integrated dry NO sub x /SO sub 2 emissions control system

Description: This project's goal is to demonstrate the removal up to 70% of the NO{sub x} and 70% of the SO{sub 2} emissions from coal fired utility boilers. It will establish an alternative emissions control technology integrating a combination of several processes, while minimizing capital expenditures and limiting waste production to dry solids that are handled with conventional ash removal equipment. These processes include low-NO{sub x} burners, NO{sub x} ports and urea injection for NO{sub x} control,… more
Date: October 15, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cyclone reburn using coal-water fuel: Pilot-scale development and testing

Description: There is an ongoing effort to develop retrofit technologies capable of converting oil- and/or gas-fired boilers to coal combustion. The objective of this project is to demonstrate the technical feasibility of an improved portion of a previously developed retrofit system designed for the purpose of converting oil/gas boilers. This improvement would almost entirely eliminate the use of premium fuels, thereby significantly increasing the economical attractiveness of the system. Specifically, the g… more
Date: October 1, 1991
Creator: Eckhart, C.F. & DeVault, R.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Physics and chemistry of E-beam stack gas processing. Final report, 20 September 1982-14 January 1984

Description: The purpose of this program is to investigate some of the basic physics and chemistry of the electron beam induced NO/sub x/ and SO/sub x/ removal process. The program involves both kinetic modelling and diagnostic development. The development of an adequate kinetic model is necessary in order to scale the laboratory results, which are currently available, to process conditions closer to those that will be encountered at full scale operation. It is also necessary in order to place the laborator… more
Date: October 1, 1983
Creator: Slater, R.
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: July-September 1988

Description: This is the fourth quarterly report of DOE Contract No. DE-AC22-87PC79864, entitled Modeling of Integrated Environmental Control Systems for Coal-Fired Power Plants.'' This report summarizes accomplishments during the period July 1, 1988 to September 30, 1988. Our efforts during the last quarter focused primarily on the completion, testing and documentation of the NO{sub x}SO process model. The sections below present the details of these developments.
Date: October 1, 1988
Creator: Rubin, E. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Nuclear war: preliminary estimates of the climatic effects of a nuclear exchange

Description: The smoke rising from burning cities, industrial areas, and forests if such areas are attacked as part of a major nuclear exchange is projected to increase the hemispheric average atmospheric burden of highly absorbent carbonaceous material by 100 to 1000 times. As the smoke spreads from these fires, it would prevent sunlight from reaching the surface, leading to a sharp cooling of land areas over a several day period. Within a few weeks, the thick smoke would spread so as to largely cover the … more
Date: October 1, 1983
Creator: MacCracken, M.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TOXECON RETROFIT FOR MERCURY AND MULTI-POLLUTANT CONTROL-ON THREE 90 MW COAL FIRED BOILERS

Description: With the Nation's coal-burning utilities facing tighter controls on mercury pollutants, the U.S. Department of Energy is supporting projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Sorbent injection technology represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as powdered activated carbon into the flue gas. The gas-phase mercury i… more
Date: October 26, 2004
Creator: Johnson, Richard E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhancing the use of coals by gas reburning-sorbent injection

Description: The objective of this project is to evaluate and demonstrate a cost effective emission control technology for acid rain precursors, oxides of nitrogen (NO{sub x}) and sulfur (SO{sub x}), on two coal fired utility boilers in Illinois. The units selected are representative of pre-NSPS design practices: tangential and cyclone fired. Work on a third unit, wall fired, has been stopped because of funding limitations. The specific objectives are to demonstrate reductions of 60 percent in NO{sub x} and… more
Date: October 14, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fundamental investigation of duct/ESP phenomena

Description: Radian Corporation was contracted to investigate duct injection and ESP phenomena in a 1.7 MW pilot plant constructed for this test program. This study was an attempt to resolve problems found in previous studies and answer remaining questions for the technology using an approach which concentrates on the fundamental mechanisms of the process. The goal of the study was to obtain a better understanding of the basic physical and chemical phenomena that control: (1) the desulfurization of flue gas… more
Date: October 21, 1991
Creator: Brown, C.A. (Radian Corp., Austin, TX (United States)); Durham, M.D. (ADA Technologies, Inc., Englewood, CO (United States)); Sowa, W.A. (California Univ., Irvine, CA (United States). Combustion Lab.); Himes, R.M. (Fossil Energy Research Corp., Laguna Hills, CA (United States)) & Mahaffey, W.A. (CHAM of North America, Inc., Huntsville, AL (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tropospheric response to a nuclear exchange

Description: The immediate effects of a full-scale nuclear war would be large and severe. The survivors of such a war would have to endure possible changes in the chemical structure of the atmosphere. These changes may come about as a result of changes caused by the nuclear explosions themselves (direct effects) or as a result of changes caused by fires that may start after the explosions (indirect effects). This paper focuses on the expected global-scale changes in the chemical structure of the atmosphere … more
Date: October 1, 1983
Creator: Penner, J.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Coal based electric generation comparative technologies report

Description: Ohio Clean Fuels, Inc., (OCF) has licensed technology that involves Co-Processing (Co-Pro) poor grade (high sulfur) coal and residual oil feedstocks to produce clean liquid fuels on a commercial scale. Stone Webster is requested to perform a comparative technologies report for grassroot plants utilizing coal as a base fuel. In the case of Co-Processing technology the plant considered is the nth plant in a series of applications. This report presents the results of an economic comparison of this… more
Date: October 26, 1989
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Potential air quality impact of geothermal power production in the Imperial Valley

Description: A regional assessment of the potential impact on air quality of developing the Imperial Valley's geothermal resources for power production is presented. A network of six stations was installed to characterize the air quality and atmospheric transport properties of the valley before development. These measured the ambient air concentrations of H/sub 2/S, SO/sub 2/, O/sub 3/, NO, NO/sub x/, CO/sub 2/, Hg, Rn, and particulates. Wind velocity and the directional variability of the winds were also m… more
Date: October 1, 1979
Creator: Gudiksen, P. H.; Ermak, D. L.; Lamson, K. C.; Axelrod, M. C. & Nyholm, R. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Integrated dry NO sub x /SO sub 2 emissions control system

Description: A per the DOE Cooperative Agreement No. DE-FC22-91PC90550 dated March 11, 1991, Public Service Company of Colorado has prepared the following quarterly report for Phase I, IIA, and IIB of the Integrated Dry NO{sub x}/SO{sub 2} Emissions Control System Project. This project includes Low NO{sub x} Burners with post firing air injection, humidification, and dry sorbent injection. This quarterly report covers the quarterly period April, May, and June, 1991. This report covers project activities for… more
Date: October 18, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Millimeter and submillimeter wave absorption by atmospheric pollutants and constituents

Description: Calculated absorption coefficients and rotational transition frequencies are given for a number of polar molecules of interest to pollution and energy research. The results, which are presented in graphical form for microwave frequencies up to 1400 GHz, illustrate the increased absorption line intensities occurring in the submillimeter region. For most species these absorption coefficients attain their maximum values in this region. Included in the calculations are the gases SO/sub 2/, H/sub 2/… more
Date: October 1, 1981
Creator: Kolbe, W.F. & Leskovar, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Feasibility of Conducting Wetfall Chemistry Investigations Around the Bowen Power Plant

Description: The feasibility of expanding the Meteorological Effects of Thermal Energy Releases - Oak Ridge National Laboratory (METER-ORNL) research at Bower Power Plant, a coal-fired power plant in northwest Georgia, to include wetfall chemistry is evaluated using results of similar studies around other power plants, several atmospheric washout models, analysis of spatial variability in precipitation, and field logistical considerations. An optimal wetfall chemistry network design is proposed, incorporati… more
Date: October 1, 1979
Creator: Chen, N. C. J. & Patrinos, A. A. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of an advanced high efficiency coal combustor for boiler retrofit

Description: The overall objective of this program is to develop a high efficiency advanced coal combustor (HEACC) for coal-based fuels capable of being retrofitted to industrial boilers originally designed for firing natural gas, distillate, and/or residual oil. The HEACC system is to be capable of firing microfine coal water fuel (MCWF), MCWF with alkali sorbent (for SO{sub 2} reduction), and dry microfine coal. Design priorities for the system are that it be simple to operate and will offer significant r… more
Date: October 1, 1989
Creator: LaFlesh, R. C.; Rini, M. J. & McGowan, J. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Influence of fuel sulfur on the selective reduction of NO by NH/sub 3/

Description: The selective reduction of NO by NH/sub 3/ addition has been studied in a lean-burning oil fired laboratory combustion tunnel with pyridine and thiophene added to the fuel oil. Two distinct, but interrelated effects were observed. The conversion of a fixed amount of fuel nitrogen to NO in the flame increased as the fuel sulfur concentration increased. In the post-combustion gases, there was a shift in the temperature dependence of the reduction process when the sulfur combustion products were p… more
Date: October 1, 1981
Creator: Lucas, D. & Brown, N.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fluidized-bed copper oxide process

Description: The fluidized-bed copper oxide process was developed to simultaneously remove sulfur dioxide and nitrogen oxide contaminants from the flue gas of coal-fired utility boilers. This dry and regenerable process uses a copper oxide sorbent in a fluidized-bed reactor. Contaminants are removed without generating waste material. (VC)
Date: October 14, 1991
Creator: Shah, P.P.; Takahashi, G.S. & Leshock, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of Sulfur Dioxide and Nitrogen Dioxide on Vegetation: Six Month Progress Report, 1 April-30 September 1979

Description: Progress in research on the effects of sulfur dioxide and nitrogen dioxide on plants is presented. Specific areas of investigation include: effects of NO/sub 2/ on the phytotoxicity of SO/sub 2/; interactions of air pollutants, plants and plant pathogens; effects of SO/sub 2/ on plant-insect interactions; mode of action and metabolism of SO/sub 2/ in plants. (ACR)
Date: October 1, 1979
Creator: Weinstein, L. H.; McCune, D. C.; MacLean, D. C.; Laurence, J. A.; Amundson, R. G.; Alscher-Herman, Ruth et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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