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Development of advanced NO[sub x] control concepts for coal-fired utility boilers (open access)

Development of advanced NO[sub x] control concepts for coal-fired utility boilers

The complete CombiNO[sub x], process has now been demonstrated at a level that is believed to be representative of a full-scale boiler in terms of mixing capabilities. A summary of the results is displayedin Figure 5-1. While firing Illinois Coal on the Reburn Tower, Advanced Reburning was capable of reducing NO[sub x], by 83 percent. The injection of methanol oxidized 50--58 percent of the existing NO to N0[sub 2]. Assuming that 85 percent of the newly formed N0[sub 2] can be scrubbed in a liquor modified wet-limestone scrubber, the CombiNO[sub x], process has been shown capable of reducing NO[sub 2], by 90--91 percent in a large pilot-scale coal-fired furnace. There is still uncertainty regarding the fate of the N0[sub 2] formed with methanol injection. Tests should be conducted to determine whether the reconversion is thermodynamic or catalytic, and what steps can be taken (such as quench rate) to prevent it from happening.
Date: March 4, 1993
Creator: Evans, A.; Pont, J. N.; England, G. & Seeker, W. R.
System: The UNT Digital Library
Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane (open access)

Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane

Amax R D will perform laboratory scale development of a promising, practical catalyst for the selective oxidation of methane to methanol. The primary component of this catalyst is vanadium-phosphate (VPO) which has shown good activity and selectivity in the partial oxidation of n-butane and propane but has not been studied in detail for methane oxidation. The goal of the project is to develop a catalyst which allows methane oxidation to methanol to be conducted at high conversion and selectivity. A low CH[sub 4]/O[sub 2] ratio will be employed with air as the source of oxygen. Temperatures below 600[degrees]C and pressures up to 20 atm are to be investigated. The use of steam in the feed gas will also be investigated. The catalyst development strategy will be to utilize promoters and supports to improve the activity and selectivity of the unmodified VPO catalyst. The catalyst testing reactor system was used to perform blank (empty) reactor runs over a wide range of temperatures, pressure, and flow rates. No methane conversion was observed at temperatures of 500[degrees]C or lower in any of the tests. At higher temperatures, significant methane conversion to carbon dioxide was observed. At 550[degrees]C, 300 psig, and the highest flow …
Date: March 4, 1993
Creator: McCormick, Robert L. & Jha, Mahesh C.
System: The UNT Digital Library
Methyl chloride via oxyhydrochlorination of methane (open access)

Methyl chloride via oxyhydrochlorination of methane

Work to develop a highly selective methyl chloride synthesis catalyst continued, but no stable catalyst with >80% selectivity at 20% methane exists yet. Effort was made on finalizing the pre- engineering scope definition of the Process Demonstration Unit. Natural gas purification, reactor, reactor effluent and MeCl purification, and anhydrous HCl recovery are discussed.
Date: March 4, 1993
Creator: Naasz, B.
System: The UNT Digital Library
Method of calculation of heat generation rates for DWPF glass (open access)

Method of calculation of heat generation rates for DWPF glass

The Waste Acceptance Preliminary Specifications (WAPS) require estimates of the heat generation rate of DWPF waste glasses. Estimates of the heat generation rates of projected glass compositions are to be reported in the Waste Form Qualification Report. Similar estimates for actual production glasses are to be reported in the Production Records. In this report, a method of calculating the heat generation rate from the radionuclide inventory is provided. Application of the method to the DWPF Design-Basis glass indicates that the heat generation rate can be accurately estimated from the Sr-90, Y-90, Cs-137, Ba-137m, and Pu-238 contents alone.
Date: February 4, 1993
Creator: Plodinec, M.J.
System: The UNT Digital Library
Sitewide Environmental Assessment for the National Renewable Energy Laboratory, Golden, Colorado (open access)

Sitewide Environmental Assessment for the National Renewable Energy Laboratory, Golden, Colorado

The Solar Energy Research, Development, and Demonstration Act of 1974 authorized a federal program to develop solar energy as a viable source of the nation`s future energy needs. Under this authority, the National Renewable Energy Laboratory (NREL) was created as a laboratory of the Department of Energy (DOE) to research a number of renewable energy possibilities. The laboratory conducts its operations both in government-owned facilities on the NREL South Table Mountain (STM) Site near Golden, Colorado, and in a number of leased facilities, particularly the Denver West Office Park. NREL operations include research in energy technologies, and other areas of national environmental and energy technology interest. Examples of these technologies include electricity from sunlight with solar cells (photovoltaics); energy from wind (windmills or wind turbines); conversion of plants and plant products (biomass) into liquid fuels (ethanol and methanol); heat from the sun (solar thermal) in place of wood, oil, gas, coal and other forms of heating; and solar buildings. NREL proposes to continue and expand the present R&D efforts in C&R energy by making infrastructure improvements and constructing facilities to eventually consolidate the R&D and associated support activities at its STM Site. In addition, it is proposed that operations continue …
Date: May 4, 1993
Creator: unknown
System: The UNT Digital Library
Initial weights and dimensions of corrosion coupons installed in IDMS in August 1993 (open access)

Initial weights and dimensions of corrosion coupons installed in IDMS in August 1993

New corrosion coupons were installed in the Feed Preparation System and the Melter/Off-Gas System of Integrated DWPF Melter System (IDMS) in August 1993. The new coupons are replacements for similar coupons which were in the IDMS since 1989 but were removed for metallurgical evaluation in April 1993. original coupons still remain on the corrosion racks in the Melter and the Off-Gas Stack. Baseline data for the replacement coupons are described in this report.
Date: October 4, 1993
Creator: Imrick, K.
System: The UNT Digital Library
Chromosome 19 International Workshop. Final report, January 1, 1992--December 31, 1992 (open access)

Chromosome 19 International Workshop. Final report, January 1, 1992--December 31, 1992

The Second International Workshop on Human Chromosome 19 was hosted on January 25 and 26, 1992, by the Department of Human Genetics, University Hospital Nijmegen, The Netherlands, at the `Meerdal Conference Center`. The workshop was supported by a grant from the European Community obtained through HUGO, the Dutch Research Organization (NWO) and the Muscular Dystrophy Association (MDA). Travel support for American participants was provided by the Department of Energy. The goals of this workshop were to produce genetic, physical and integrated maps of chromosome 19, to identify inconsistencies and gaps, and to discuss and exchange resources and techniques available for the completion of these maps. The second day of the meeting was largely devoted to region or disease specific efforts. In particular, the meeting served as a platform for assessing and discussing the recent progress made into the molecular elucidation of myotonic dystrophy.
Date: January 4, 1993
Creator: Pericak-Vance, M. A.; Ropers, H. H. & Carrano, A. J.
System: The UNT Digital Library
Fundamental studies of coal liquefaction. Quarterly report No. 5, October 1, 1992--January 1, 1993 (open access)

Fundamental studies of coal liquefaction. Quarterly report No. 5, October 1, 1992--January 1, 1993

The results for the control run for a single particle are shown in Figure 1. The figure, which includes other thermolytic data for Illinois No. 6 coal, shows that the particle was stable in size to around 440{degree}C. At that point it contracted very rapidly to about half its size over the next 15{degrees}. Also shown are data for the same coal from SRI`s field ionization mass spectrometer (FIMS), in which case a sample of the coal is heated at 2.5{degrees}C/min from ambient to 500{degrees}C and the effluent is swept into mass spectrometer. The evolution of the coal volatiles is reflected by accumulated ion count with increasing temperature, and is presented in the figure as the fraction of total volatiles. As the figure shows, the abrupt increase in volatility corresponds very closely to the equally abrupt reduction in particle size. The weight average molecular weight profile from the FIMS work is also in the figure, and shows that the coal experiences a simple loss of volatiles of increasing molecular weight up to around 440{degrees}C. At that point pyrolysis and fragmentation come about, reflected in the quick reversal and decline in molecular weight. The high rate of volatility and shrinkage are …
Date: February 4, 1993
Creator: Ross, D. S.
System: The UNT Digital Library
Development of advanced NO{sub x} control concepts for coal-fired utility boilers. Quarterly technical progress report No. 8, July 1, 1992--September 30, 1992 (open access)

Development of advanced NO{sub x} control concepts for coal-fired utility boilers. Quarterly technical progress report No. 8, July 1, 1992--September 30, 1992

The complete CombiNO{sub x}, process has now been demonstrated at a level that is believed to be representative of a full-scale boiler in terms of mixing capabilities. A summary of the results is displayed in Figure 5-1. While firing Illinois Coal on the Reburn Tower, Advanced Reburning was capable of reducing NO{sub x}, by 83 percent. The injection of methanol oxidized 50--58 percent of the existing NO to N0{sub 2}. Assuming that 85 percent of the newly formed N0{sub 2} can be scrubbed in a liquor modified wet-limestone scrubber, the CombiNO{sub x}, process has been shown capable of reducing NO{sub 2}, by 90--91 percent in a large pilot-scale coal-fired furnace. There is still uncertainty regarding the fate of the N0{sub 2} formed with methanol injection. Tests should be conducted to determine whether the reconversion is thermodynamic or catalytic, and what steps can be taken (such as quench rate) to prevent it from happening.
Date: March 4, 1993
Creator: Evans, A.; Pont, J. N.; England, G. & Seeker, W. R.
System: The UNT Digital Library
Fundamental studies of coal liquefaction. Quarterly report No. 6, January 1--April 1, 1993 (open access)

Fundamental studies of coal liquefaction. Quarterly report No. 6, January 1--April 1, 1993

Figures 3, 4, and 5 display images of two adjacent particles chosen for analysis with characteristic dimensions of 50--100 {mu}m Figure 3 shows that there is essentially no change up to 395{degrees}C over an 18 min period, but at that point the particle labeled a begins to shrink. The action continues in Figure 4 where the particle contracts to about half its initial size over a 45 sec period as the temperature, increases from 424{degrees}C to 430{degrees}C, at which point the contraction stops. The size profile for a is presented in Figure 6 and compares very well with the profile generated in an earlier experiment from our last report. As just noted, this agreement suggests that this behavior is representative of at least one class of particle in the sample. Figure 5 shows that there is a second, higher temperature range of activity, represented by the changes in particle b. This particle contracts to about half its size from 450{degrees} to 460{degrees}C over 1 min. The temperature was held at 460{degrees} and there appears to be an additional 7--10% contraction over 10 min at that temperature, although the scatter seen in Figure 6 shows that change is not outside our …
Date: May 4, 1993
Creator: Ross, D. S.
System: The UNT Digital Library
Digital conversion of INEL archeological data using ARC/INFO and Oracle (open access)

Digital conversion of INEL archeological data using ARC/INFO and Oracle

This report documents the procedures used to convert archaeological data for the INEL to digital format, lists the equipment used, and explains the verification and validation steps taken to check data entry. It also details the production of an engineered interface between ARC/INFO and Oracle.
Date: November 4, 1993
Creator: Lee, R. D.; Brizzee, J. & White, L.
System: The UNT Digital Library
Electronic cone penetration testing at the Hanford Site, 200 West Area (open access)

Electronic cone penetration testing at the Hanford Site, 200 West Area

The 200 West Area Carbon Tetrachloride Expedited Response Action (ERA) is being conducted by the US Department of Energy (DOE) at the direction of the US Environmental Protection Agency (EPA) and the Washington Department of Ecology as a provision of both the Comprehensive Environmental Response Compensation and Liability Act of 1980 (CERCLA) and the Integrated Demonstration for Cleanup of Volatile Organic Compounds at Arid Sites (VOC-Arid ID). The ERA allows expedited response to be taken at waste sites where damage to the environment can be significantly reduced by early action to locate, identify the extent, and remediate imminent hazards. The ERA is focusing specifically on the removal of carbon tetrachloride vapor from the soil column and protection of the groundwater in the 200 West Area. The VOC-Arid ID program allows demonstration of new drilling technologies for environmental characterization monitoring and remediation. Soil vapor vacuum extraction has been proposed to remediate the site. This may require vapor extraction wells to be installed within the plume.
Date: June 4, 1993
Creator: Rohay, V. J.
System: The UNT Digital Library
Methyl chloride via oxyhydrochlorination of methane. Final quarterly technical report, July 1, 1992--September 30, 1992 (open access)

Methyl chloride via oxyhydrochlorination of methane. Final quarterly technical report, July 1, 1992--September 30, 1992

Work to develop a highly selective methyl chloride synthesis catalyst continued, but no stable catalyst with >80% selectivity at 20% methane exists yet. Effort was made on finalizing the pre- engineering scope definition of the Process Demonstration Unit. Natural gas purification, reactor, reactor effluent and MeCl purification, and anhydrous HCl recovery are discussed.
Date: March 4, 1993
Creator: Naasz, B.
System: The UNT Digital Library
Lower hybrid current drive for edge current density modification in DIII-D: Final status report (open access)

Lower hybrid current drive for edge current density modification in DIII-D: Final status report

Application of Lower Hybrid (LH) Current Drive (CD) in the DIII-D tokamak has been studied at LLNL, off and on, for several years. The latest effort began in February 1992 in response to a letter from ASDEX indicating that the 2.45 GHz, 3 MW system there was available to be used on another device. An initial assessment of the possible uses for such a system on DIII-D was made and documented in September 1992. Multiple meetings with GA personnel and members of the LH community nationwide have occurred since that time. The work continued through the submission of the 1995 Field Work Proposals in March 1993 and was then put on hold due to budget limitations. The purpose of this document is to record the status of the work in such a way that it could fairly easily be restarted at a future date. This document will take the form of a collection of Appendices giving both background and the latest results from the FY 1993 work, connected by brief descriptive text. Section 2 will describe the final workshop on LHCD in DIII-D held at GA in February 1993. This was an open meeting with attendees from GA, LLNL, MIT …
Date: August 4, 1993
Creator: Fenstermacher, M. E. & Porkolab, M.
System: The UNT Digital Library
D0 Solenoid Upgrade Project: D0 Solenoid Current Leads (open access)

D0 Solenoid Upgrade Project: D0 Solenoid Current Leads

This engineering note documents information gathered and design decisions made regarding the vapor cooled current leads for the D-Zero Solenoid. The decision was made during design group meetings that the D-Zero Solenoid, rated at 4825 amps, should use vapor cooled current leads rated at 6000 amps. CDF uses 6000 amp leads from American Magnetics Inc. (AMI) and has two spares in their storage lockers. Because of the spares situation and AMI's reputation, AMI would be the natural choice of vendor. The manufacturer's listed helium consumption is 19.2 liters/hr. From experience with these types of leads, more stable operation is acheived at an increased gas flow. See attached E-Mail message from RLS. We have decided to list the design flow rate at 28.8 liquid liters/hr in the design report. This corresponds to COFs operating point. A question was raised regarding how long the current leads could last at full current should the vapor cooling flow was stopped. This issue was discussed with Scott Smith from AMI. We do not feel that there is a problem for this failure scenario.
Date: October 4, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
Control Dewar Subcooler Heat Exchanger Calculations (open access)

Control Dewar Subcooler Heat Exchanger Calculations

The calculations done to size the control dewar subcooler were done to obtain a sufficient subcooler size based on some conservative assumptions. The final subcooler design proposed in the design report will work even better because (1) It has more tubing length, and (2) will have already subcooled liquid at the inlet due to the transfer line design. The subcooler design described in the 'Design Report of the 2 Tesla Superconducting Solenoid for the Fermilab D0 Detector Upgrade' is the final design proposed. A short description of this design follows. The subcooler is constructed of 0.50-inch OD copper tubing with 1.0-inch diameter fins. It has ten and one half spirals at a 11.375-inch centerline diameter to provide 31 feet of tubing length. The liquid helium supply for the solenoid flows through the subcooler and then is expanded through a J-T valve. The subcooler spirals are immersed in the return two phase helium process stream. The return stream is directed over the finned tubing by an annulus created by a 10-inch pipe inside a 12-inch pipe. The transfer line from the refrigerator to the control dewar is constructed such that the liquid helium supply tube is in the refrigerator return stream, …
Date: October 4, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
Chimney Open Issues (open access)

Chimney Open Issues

In the process of developing a design for the design report, many side questions or comments arose which were not completely answered or investigated because the work was outside the scope of developing a base design. I have pored over my meeting notes and tried to list all such chimney 'open issues' in this engineering note.
Date: October 4, 1993
Creator: Rucinski, R.
System: The UNT Digital Library
Human cDNA mapping using fluorescence in situ hybridization. Progress report, April 1, 1992--December 31, 1992 (open access)

Human cDNA mapping using fluorescence in situ hybridization. Progress report, April 1, 1992--December 31, 1992

Genetic mapping is approached using the techniques of high resolution fluorescence in situ hybridization (FISH). This technology and the results of its application are designed to rapidly generate whole genome as tool box of expressed sequence to speed the identification of human disease genes. The results of this study are intended to dovetail with and to link the results of existing technologies for creating backbone YAC and genetic maps. In the first eight months, this approach generated 60--80% of the expressed sequence map, the remainder expected to be derived through more long-term, labor-intensive, regional chromosomal gene searches or sequencing. The laboratory has made significant progress in the set-up phase, in mapping fetal and adult brain and other cDNAs, in testing a model system for directly linking genetic and physical maps using FISH with small fragments, in setting up a database, and in establishing the validity and throughput of the system.
Date: March 4, 1993
Creator: Korenberg, J. R.
System: The UNT Digital Library
Method of calculation of heat generation rates for DWPF glass. Revision 2 (open access)

Method of calculation of heat generation rates for DWPF glass. Revision 2

The Waste Acceptance Preliminary Specifications (WAPS) require estimates of the heat generation rate of DWPF waste glasses. Estimates of the heat generation rates of projected glass compositions are to be reported in the Waste Form Qualification Report. Similar estimates for actual production glasses are to be reported in the Production Records. In this report, a method of calculating the heat generation rate from the radionuclide inventory is provided. Application of the method to the DWPF Design-Basis glass indicates that the heat generation rate can be accurately estimated from the Sr-90, Y-90, Cs-137, Ba-137m, and Pu-238 contents alone.
Date: February 4, 1993
Creator: Plodinec, M. J.
System: The UNT Digital Library
Spectrometer beam tube dimensional optimization (open access)

Spectrometer beam tube dimensional optimization

This project examined the optimization of the design of a beam tube. An ANSYS model was used to find the minimum tube thickness and the best camber in a beam tube under vacuum and preloaded by a pair of magnet poles. After the tube was modeled one version of it was built for use in the accelerator. This beam tube was put under a vacuum and the dimensional changes were recorded and compared to the ANSYS predictions. These deflection results were quite close to the predicted numbers and would suggest that the stresses are similar to the predictions as well.
Date: January 4, 1993
Creator: Dye, S.
System: The UNT Digital Library
Refining of fossil resin flotation concentrate from Western coal. Third quarterly final report, July 1, 1993--September 30, 1993 (open access)

Refining of fossil resin flotation concentrate from Western coal. Third quarterly final report, July 1, 1993--September 30, 1993

Summary of Batch Extraction Experiments: (1) Resin extraction rate is not significantly affected by agitation intensity and low agitation should be suitable for the continuous extraction process; (2) The effect of resin particle size on the extraction rate and yield is obvious. Because of the fine size of the composite resin concentrate (80% minus 200 mesh), the extraction reaction occurs in reasonable times and process design conditions can be established accordingly; (3) The effect of temperature on the rate and yield of the extraction process is found to be very significant. Higher temperatures (about 60{degree}C) should be considered for the continuous extraction circuit; (4) The effect of solids concentration on the extraction rate is moderate. As concluded from our characterization study, it is known that fossil resin is mainly composed of aliphatic components, partially aromatized multicyclic compounds with a small number of oxygen functional groups. The solvent, heptane, is also a nonpolar aliphatic compound. It is expected that no chemical reaction will occur in such an extraction process at low temperature (0--90{degree}C). The main interaction between resin and heptane is expected to be the van-der-Waals-forces of interaction associated with solvation phenomena. In this regard, the resin extraction rate should be …
Date: October 4, 1993
Creator: Jensen, G. F. & Miller, J. D.
System: The UNT Digital Library
Projected radionuclide inventories of DWPF glass from current waste at time of production. Revision 1 (open access)

Projected radionuclide inventories of DWPF glass from current waste at time of production. Revision 1

The Waste Acceptance Preliminary Specifications (WAPS) require that the DWPF estimate the inventory of long-lived radionuclides present in the waste glass, and report the values in the Waste Form Qualification Report. In this report, conservative (biased high) estimates of the radionuclide inventory of glass produced from waste currently in the Tank Farm are provided. In most cases, these calculated values compare favorably with actual data. In those cases where the agreement is not good, the values reported here are conservative.
Date: February 4, 1993
Creator: Plodinec, M. J.
System: The UNT Digital Library
Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report No. 1, October--December 1992 (open access)

Development of vanadium-phosphate catalysts for methanol production by selective oxidation of methane. Quarterly technical progress report No. 1, October--December 1992

Amax R&D will perform laboratory scale development of a promising, practical catalyst for the selective oxidation of methane to methanol. The primary component of this catalyst is vanadium-phosphate (VPO) which has shown good activity and selectivity in the partial oxidation of n-butane and propane but has not been studied in detail for methane oxidation. The goal of the project is to develop a catalyst which allows methane oxidation to methanol to be conducted at high conversion and selectivity. A low CH{sub 4}/O{sub 2} ratio will be employed with air as the source of oxygen. Temperatures below 600{degrees}C and pressures up to 20 atm are to be investigated. The use of steam in the feed gas will also be investigated. The catalyst development strategy will be to utilize promoters and supports to improve the activity and selectivity of the unmodified VPO catalyst. The catalyst testing reactor system was used to perform blank (empty) reactor runs over a wide range of temperatures, pressure, and flow rates. No methane conversion was observed at temperatures of 500{degrees}C or lower in any of the tests. At higher temperatures, significant methane conversion to carbon dioxide was observed. At 550{degrees}C, 300 psig, and the highest flow rate …
Date: March 4, 1993
Creator: McCormick, Robert L. & Jha, Mahesh C.
System: The UNT Digital Library
Waste Contaminants at Military Bases Working Group report (open access)

Waste Contaminants at Military Bases Working Group report

The Waste Contaminants at Military Bases Working Group has screened six prospective demonstration projects for consideration by the Federal Advisory Committee to Develop On-Site Innovative Technologies (DOIT). These projects include the Kirtland Air Force Base Demonstration Project, the March Air Force Base Demonstration Project, the McClellan Air Force Base Demonstration Project, the Williams Air Force Base Demonstration Project, and two demonstration projects under the Air Force Center for Environmental Excellence. A seventh project (Port Hueneme Naval Construction Battalion Center) was added to list of prospective demonstrations after the September 1993 Working Group Meeting. This demonstration project has not been screened by the working group. Two additional Air Force remediation programs are also under consideration and are described in Section 6 of this document. The following information on prospective demonstrations was collected by the Waste Contaminants at Military Bases Working Group to assist the DOIT Committee in making Phase 1 Demonstration Project recommendations. The remainder of this report is organized into seven sections: Work Group Charter`s mission and vision; contamination problems, current technology limitations, and institutional and regulatory barriers to technology development and commercialization, and work force issues; screening process for initial Phase 1 demonstration technologies and sites; demonstration descriptions -- …
Date: November 4, 1993
Creator: unknown
System: The UNT Digital Library