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Oxidation of alloys targeted for advanced steam turbines

Description: Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include coal generation at 60% efficiency, which would require steam temperatures of up to 760°C. This research examines the steamside oxidation of alloys for use in USC systems, with emphasis placed on applications in high- and intermediate-pressure turbines.
Date: March 12, 2006
Creator: Holcomb, G. R.; Covino, B. S., Jr.; Bullard, S. J.; Ziomek-Moroz, M. & Alman, D. E.
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Partner: UNT Libraries Government Documents Department
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Development of Practical Supported Ionic Liquid Membranes: A Systematic Approach

Description: Supported liquid membranes (SLMs) are a class of materials that allow the researcher to utilize the wealth of knowledge available on liquid properties to optimize membrane performance. These membranes also have the advantage of liquid phase diffusivities, which are higher than those observed in polymers and grant proportionally greater permeabilities. The primary shortcoming of the supported liquid membranes demonstrated in past research has been the lack of stability caused by volatilization o… more
Date: November 1, 2007
Creator: Luebke, D. R.; Ilconich, J. B.; Myers, C. R. & Pennline, H. W.
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Partner: UNT Libraries Government Documents Department
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Carbon Dioxide Transport and Sorption Behavior in Confined Coal Cores for Enhanced Coalbed Methane and CO2 Sequestration

Description: Measurements of sorption isotherms and transport properties of CO2 in coal cores are important for designing enhanced coalbed methane/CO2 sequestration field projects. Sorption isotherms measured in the lab can provide the upper limit on the amount of CO2 that might be sorbed in these projects. Because sequestration sites will most likely be in unmineable coals, many of the coals will be deep and under considerable lithostatic and hydrostatic pressures. These lithostatic pressures may significa… more
Date: November 1, 2007
Creator: Jikich, S.A.; McLendon, T.R.; Seshadri, K.S.; Irdi, G.A. & Smith, D.H.
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Partner: UNT Libraries Government Documents Department
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PCC2005 Sample

Description: Considered herein is a process concept that integrates fly ash amendment of brine produced as a result of oil and gas extraction with subsequent sequestration of carbon dioxide in the resulting alkaline solution. The CO2 solubility-trapping capacity of the alkaline mixture is substantially greater than that of the acidic raw brine. In addition to pH adjustment, addition of CaO-rich combustion byproduct augments the concentration of Ca++ cations initially present in the brine to increase solutio… more
Date: September 1, 2005
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Partner: UNT Libraries Government Documents Department
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Surface selective membranes for carbon dioxide separation

Description: In this study, hybrid membranes have been developed for the selective separation of CO2 from mixtures containing H2. Beginning with commercially available Pall alumina membrane tubes with nominal pore diameter of 5 nm, hybrids were produced by silation with a variety of functionalities designed to facilitate the selective adsorption of CO2 onto the pore surface. The goal is to produce a membrane which can harness the power of surface diffusion to give the selectivity of polymer membranes with t… more
Date: September 1, 2005
Creator: Luebke, David R.; Pennline, Henry W. & Myers, Christina R.
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Partner: UNT Libraries Government Documents Department
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Carbon dioxide capture and separation techniques for advanced power generation point sources

Description: The capture/separation step for carbon dioxide (CO2) from large-point sources is a critical one with respect to the technical feasibility and cost of the overall carbon sequestration scenario. For large-point sources, such as those found in power generation, the carbon dioxide capture techniques being investigated by the in-house research area of the National Energy Technology Laboratory possess the potential for improved efficiency and costs as compared to more conventional technologies. The i… more
Date: September 1, 2006
Creator: Pennline, Henry W.; Luebke, David R.; Morsi, Badie I.; Heintz, Yannick J.; Jones, Kenneth L. & Ilconich, Jeffery B.
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Partner: UNT Libraries Government Documents Department
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Materials and Component Development for Advanced Turbine Systems

Description: In order to meet the 2010-2020 DOE Fossil Energy goals for Advanced Power Systems, future oxy-fuel and hydrogen-fired turbines will need to be operated at higher temperatures for extended periods of time, in environments that contain substantially higher moisture concentrations in comparison to current commercial natural gas-fired turbines. Development of modified or advanced material systems, combined with aerothermal concepts are currently being addressed in order to achieve successful operat… more
Date: October 1, 2008
Creator: Alvin, M. A.; Pettit, F.; Meier, G.; Yanar, N.; Chyu, M.; Mazzotta, D. et al.
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Partner: UNT Libraries Government Documents Department
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Low-Chrome/Chrome Free Refractories for Slagging Gasifiers

Description: Gasifiers are containment vessels used to react carbon-containing materials with oxygen and water, producing syngas (CO and H2) that is used in chemical and power production. It is also a potential source of H2 in a future hydrogen economy. Air cooled slagging gasifiers are one type of gasifier, operating at temperatures from 1275-1575º C and at pressures of 400 psi or higher. They typically use coal or petroleum coke as the carbon source, materials which contain ash impurities that liquefy at … more
Date: January 1, 2007
Creator: Bennett, J.P.; Kwong, K.-S.; Powell, C.P.; Thomas, H. & Petty, A.V., Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oxy-fuel Combustion and Integrated Pollutant Removal as Retrofit Technologies for Removing CO2 from Coal Fired Power Plants

Description: One third of the US installed capacity is coal-fired, producing 49.7% of net electric generation in 20051. Any approach to curbing CO2 production must consider the installed capacity and provide a mechanism for preserving this resource while meeting CO2 reduction goals. One promising approach to both new generation and retrofit is oxy-fuel combustion. Using oxygen instead of air as the oxidizer in a boiler provides a concentrated CO2 combustion product for processing into a sequestration-ready … more
Date: January 1, 2001
Creator: Ochs, Tom L.; Oryshchyn, Danylo B.; Summers, Cathy A. & Gerdemann, Stephen J.
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Partner: UNT Libraries Government Documents Department
open access

Corrosion Performance of Ferritic Steel for SOFC Interconnect Applications

Description: Ferritic stainless steels have been identified as potential candidates for interconnects in planar-type solid oxide fuel cells (SOFC) operating below 800ºC. Crofer 22 APU was selected for this study. It was studied under simulated SOFC-interconnect dual environment conditions with humidified air on one side of the sample and humidified hydrogen on the other side at 750ºC. The surfaces of the oxidized samples were studied by scanning electron microscopy (SEM) equipped with microanalytical capabi… more
Date: November 1, 2006
Creator: Ziomek-Moroz, M.; Holcomb, G. R.; Covino, B. S., Jr.; Bullard, S. J.; Jablonski, P. D. & Alman, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Materials and Component Development for Advanced Turbine Systems

Description: Hydrogen-fired and oxy-fueled land-based gas turbines currently target inlet operating temperatures of ∼1425-1760°C (∼2600-3200°F). In view of natural gas or syngas-fired engines, advancements in both materials, as well as aerothermal cooling configurations are anticipated prior to commercial operation. This paper reviews recent technical accomplishments resulting from NETL’s collaborative research efforts with the University of Pittsburgh and West Virginia University for future land-based gas … more
Date: July 1, 2008
Creator: Alvin, M. A.; Pettit, F.; Meier, G. H.; Yanar, M.; Helminiak, M.; Chyu, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Visualization and Modeling Working Group

Description: During the 2005 Hurricane season, many consequence predictions were available from 36 to 96 hours before landfalls, via the Department of Energy’s Visualization and Modeling Working Group (VMWG). Real-time data can be tapped by local officials and utilities, and can also be accessed for post-event regulatory audits. An overview of VMWG’s models, results and uses will be presented.
Date: March 1, 2007
Creator: Fernandez, S. J. & Dodrill, K. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Gasification CFD Modeling for Advanced Power Plant Simulations

Description: In this paper we have described recent progress on developing CFD models for two commercial-scale gasifiers, including a two-stage, coal slurry-fed, oxygen-blown, pressurized, entrained-flow gasifier and a scaled-up design of the PSDF transport gasifier. Also highlighted was NETL’s Advanced Process Engineering Co-Simulator for coupling high-fidelity equipment models with process simulation for the design, analysis, and optimization of advanced power plants. Using APECS, we have coupled the entr… more
Date: September 1, 2005
Creator: Zitney, S. E. & Guenther, C. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Carbon Dioxide Selective Supported Ionic Liquid Membranes: The Effect of Contaminants

Description: The integrated gasification combined cycle (IGCC) is widely viewed as a promising technology for the large scale production of energy in a carbon constrained world. These cycles, which include gasification, contaminant removal, water-gas shift, CO2 capture and compression, and combustion of the reduced-carbon fuel gas in a turbine, often have significant efficiency advantages over conventional combustion technologies. A CO2 selective membrane capable of maintaining performance at conditions app… more
Date: April 1, 2008
Creator: Luebke, D. R.; Ilconich, J. B.; Myers, C. R. & Pennline, H. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculating the Energy Cost of CO2 Removal in a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System with an Isolated Anode Stream

Description: In recent years there has been significant interest in identifying carbon capturing technologies that can be applied to fossil fuel power generation plants.CO2 capture technologies seek to reduce the amount of CO2 that would normally be emitted into the atmosphere from the daily operation of these plants. In terms of system efficiency and operating costs, this carbon capture is expensive. Further, the additional equipment that would be used to capture CO2 emissions greatly adds to the complexit… more
Date: October 1, 2007
Creator: Vanosdol, J. G.; Gemmen, R. S. & Liese, E. A.
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Partner: UNT Libraries Government Documents Department
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Leaching of FGD Byproducts Using a CSTX

Description: Leaching studies of coal utilization byproducts (CUB) are often performed to determine the compatibility of the material in a particular end-use or disposal environment. Typically, these studies are conducted using either a batch or a fixed-bed column technique. Fixed-bed columns offer the advantage of a continuous flow of effluent that provides elution profiles with changing elution volume and pH. Unfortunately, clogs can form in fixed-bed leaching columns, either because of cementitious prope… more
Date: September 1, 2005
Creator: Kairies, C.L.; Schroeder, K.T. & Cardone, C.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Alloys for advanced steam turbines--Oxidation behavior

Description: Advanced or ultra supercritical (USC) steam power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy (DOE) include power generation from coal at 60% efficiency, which would require steam temperatures of up to 760°C. Current research on the oxidation of candidate materials for advanced steam turbines is presented with a focus on a methodology for estimating chromium evaporation rates from protective chromia scales. The high velocit… more
Date: October 1, 2007
Creator: Holcomb, G. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Steam turbine materials and corrosion

Description: Ultra supercritical (USC) power plants offer the promise of higher efficiencies and lower emissions. Current goals of the U.S. Department of Energy’s Advanced Power Systems Initiatives include coal generation at 60% efficiency, which would require steam temperatures of up to 760°C. This research examines the steamside oxidation of alloys for use in USC systems, with emphasis placed on applications in high- and intermediate-pressure turbines. The list of alloys being examined is discussed, inclu… more
Date: January 1, 2007
Creator: Holcomb, G.R. & Ziomek-Moroz, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CO2 Sequestration in Unmineable Coal Seams: Potential Environmental Impacts

Description: An initial investigation into the potential environmental impacts of CO2 sequestration in unmineable coal seams has been conducted, focusing on changes in the produced water during enhanced coalbed methane (ECBM) production using a CO2 injection process (CO2-ECBM). Two coals have been used in this study, the medium volatile bituminous Upper Freeport coal (APCS 1) of the Argonne Premium Coal Samples series, and an as-mined Pittsburgh #8 coal, which is a high volatile bituminous coal. Coal sample… more
Date: September 1, 2005
Creator: Hedges, S. W.; Soong, Yee; McCarthy Jones, J. R.; Harrison, D. K.; Irdi, G. A.; Frommell, E. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CO2-selective, Hybrid Membranes by Silation of Alumina

Description: Hybrid membranes are feasible candidates for the separation of CO2 from gas produced in coal-based power generation since they have the potential to combine the high selectivity of polymer membranes and the high permeability of inorganic membranes. An interesting method for producing hybrid membranes is the silation of an inorganic membrane. In this method, trichloro- or alkoxy-silanes interact with hydroxyl groups on the surface of γ-AlO3 or TiO2, binding organic groups to that surface. By var… more
Date: September 1, 2007
Creator: Luebke, D. R. & Pennline, H. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Corrosion behavior of iron and nickel base alloys under solid oxide fuel cell exposure conditions

Description: Topography and phase composition of the scales formed on commercial ferritic stainless steels and experimental low CTE nickel-based alloys were studied in atmospheres simulating solid oxide fuel cell (SOFC) environments. The materials were studied under dual environment conditions with air on one side of the sample and carbon monoxide on the other side at 750°C. Surface characterization techniques, such as scanning electron microscopy and X-ray diffraction analysis were used in this study.
Date: March 1, 2006
Creator: Ziomek-Moroz, M.; Holcomb, G. R.; Covino, B. S., Jr. & Bullard, S. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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