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Articles 2701 - 2730 of 3641
Full-Text Articles in Oil, Gas, and Energy
Cost-Effective, Environmentally-Friendly Ash Beneficiation Technology, Scott Ziegler
Cost-Effective, Environmentally-Friendly Ash Beneficiation Technology, Scott Ziegler
World of Coal Ash Proceedings
No abstract provided.
The Utilization Of Dry Scrubber Material For The Production Of Calcium Sulfoaluminate Clinkers And Cements, Tristana Y. Duvallet, Robert B. Jewell, Anne E. Oberlink, Thomas L. Robl
The Utilization Of Dry Scrubber Material For The Production Of Calcium Sulfoaluminate Clinkers And Cements, Tristana Y. Duvallet, Robert B. Jewell, Anne E. Oberlink, Thomas L. Robl
World of Coal Ash Proceedings
No abstract provided.
Net Environmental Benefit Analysis (Neba) For Ccr Pond Closure Decisions -- A Pathway To Meaningful Citizen Engagement And Reducing The Potential For Unnecessary Litigation, Chris Hardin, Ric Traver
Net Environmental Benefit Analysis (Neba) For Ccr Pond Closure Decisions -- A Pathway To Meaningful Citizen Engagement And Reducing The Potential For Unnecessary Litigation, Chris Hardin, Ric Traver
World of Coal Ash Proceedings
No abstract provided.
Challenges Met In Using Bottom Ash As A Landfill Drainage Media, William M. Strachan
Challenges Met In Using Bottom Ash As A Landfill Drainage Media, William M. Strachan
World of Coal Ash Proceedings
No abstract provided.
Two Bottom Ash Management/Handling System Enhancement Case Studies – From Technology Evaluation And Design Through Construction And Performance Verification, George Mckenzie, Aaron Davis, Chris Pickelmann, Jason Obermeyer
Two Bottom Ash Management/Handling System Enhancement Case Studies – From Technology Evaluation And Design Through Construction And Performance Verification, George Mckenzie, Aaron Davis, Chris Pickelmann, Jason Obermeyer
World of Coal Ash Proceedings
No abstract provided.
Slurry-Trench Cutoff Walls For The Containment Of The Coal Combustion Residuals (Ccr) Impacted Groundwater: Evaluation Of Hydraulic Conductivity And Consolidation Properties Of Soil-Bentonite Backfills, Y.L. Yang, Krishna Reddy, Y.J. Du, R.D. Fan
Slurry-Trench Cutoff Walls For The Containment Of The Coal Combustion Residuals (Ccr) Impacted Groundwater: Evaluation Of Hydraulic Conductivity And Consolidation Properties Of Soil-Bentonite Backfills, Y.L. Yang, Krishna Reddy, Y.J. Du, R.D. Fan
World of Coal Ash Proceedings
No abstract provided.
Ccp Beneficial Use Risk Assessment: Case Studies For Three Different Applications, Andrew Bittner, Ari Lewis
Ccp Beneficial Use Risk Assessment: Case Studies For Three Different Applications, Andrew Bittner, Ari Lewis
World of Coal Ash Proceedings
No abstract provided.
Corrective Measures/Corrective Action (Cm/Ca) Strategies That Effectively Integrate Engineered Pond Closures And Short/Long-Term Groundwater Management With Case Study Examples, Steve Putrich
World of Coal Ash Proceedings
No abstract provided.
Managing Landfill Leachate In A World Without Ash Basins: Lessons Learned And Practical Considerations, Evan Andrews, Michael Lazar
Managing Landfill Leachate In A World Without Ash Basins: Lessons Learned And Practical Considerations, Evan Andrews, Michael Lazar
World of Coal Ash Proceedings
No abstract provided.
Developing Enhanced Monitored Natural Attenuation Strategies Using Reactive Transport Models, Pj Nolan, Hugh Davies, Greg Hebeler, Rens Verburg
Developing Enhanced Monitored Natural Attenuation Strategies Using Reactive Transport Models, Pj Nolan, Hugh Davies, Greg Hebeler, Rens Verburg
World of Coal Ash Proceedings
No abstract provided.
Experimental Test Method To Determine The Reactivity Of Fly Ash For Use In Concrete Mixture Proportioning, Antara Choudry, Deborah Glosser, O. Burkan Isgor, W. Jason Weiss
Experimental Test Method To Determine The Reactivity Of Fly Ash For Use In Concrete Mixture Proportioning, Antara Choudry, Deborah Glosser, O. Burkan Isgor, W. Jason Weiss
World of Coal Ash Proceedings
No abstract provided.
Overview Of Epri Research On Environmental Issues And Beneficial Use Of Coal Combustion Products, Bruce Hensel, Ken Ladwig
Overview Of Epri Research On Environmental Issues And Beneficial Use Of Coal Combustion Products, Bruce Hensel, Ken Ladwig
World of Coal Ash Proceedings
No abstract provided.
Is My Site A Candidate For A Groundwater Natural Attenuation Remedy? A Geochemist’S Perspective, Bob Glazier
Is My Site A Candidate For A Groundwater Natural Attenuation Remedy? A Geochemist’S Perspective, Bob Glazier
World of Coal Ash Proceedings
No abstract provided.
Impoundment Closure Enhancement Measures To Support Groundwater Compliance, John Hesemann, Wayne Weber, Eric Dulle
Impoundment Closure Enhancement Measures To Support Groundwater Compliance, John Hesemann, Wayne Weber, Eric Dulle
World of Coal Ash Proceedings
No abstract provided.
Enhancing Coal Ash Impoundment Closure Using Value Engineering, Holt Wheeler, Trey Mangers, Paul Lear
Enhancing Coal Ash Impoundment Closure Using Value Engineering, Holt Wheeler, Trey Mangers, Paul Lear
World of Coal Ash Proceedings
No abstract provided.
Panel On Liquefaction Of Ponded Fly Ash: From Laboratory To Practice, Tarunjit S. Butalia
Panel On Liquefaction Of Ponded Fly Ash: From Laboratory To Practice, Tarunjit S. Butalia
World of Coal Ash Proceedings
No abstract provided.
Using Wind And Hydro Power To Sustain The Off-Grid Power Supply For A 50' Cruising Sailboat, Keisha Meyer, Torrey J. Wagner, Jada Williams
Using Wind And Hydro Power To Sustain The Off-Grid Power Supply For A 50' Cruising Sailboat, Keisha Meyer, Torrey J. Wagner, Jada Williams
Faculty Publications
Cruising sailboats operate with a power requirement modest enough to operate mostly or completely on renewable energy technology sources. Cruisers without renewable energy systems use the vessel’s diesel engine to charge the boat’s batteries; if the systems are operated at anchor, this dramatically decreases the time before the engine needs major overhaul. System users estimate a diesel engine can run approximately 8,000 hours underway before needing major overhaul, whereas operating 500 hours at anchor produces similar wear and tear on engine pistons. Although renewable energy systems have a high initial capital cost, these systems can provide the vessel’s electrical system …
H2 Control For Improved Stability Of Multi-Area Electric Power System With High Levels Of Inverter-Based Generation, Muthanna Abdulkareem Al-Sarray
H2 Control For Improved Stability Of Multi-Area Electric Power System With High Levels Of Inverter-Based Generation, Muthanna Abdulkareem Al-Sarray
Graduate Theses and Dissertations
Increased generation capacity from non-dispatchable energy resources such as wind and solar has created challenges to ensuring the reliable delivery of electric power. This research develops a systematic three-step method of assessing the reliability of electric power systems under a variety of different possible fault conditions to ensure that overall system stability is preserved in a manner the meets regulatory requirements. The first step is a risk-based reliability method (RBRM) that accounts for the probability of a line outage versus the severity of impact. This allows system planners to judiciously allocate expenses for reliability improvements based on the greatest economic …
Reduction Of Amine Emissions From An Aqueous Amine Carbon Dioxide Capture System Using Charged Colloidal Gas Aphrons, Xiaobing Li, Jesse G. Thompson, Kunlei Liu
Reduction Of Amine Emissions From An Aqueous Amine Carbon Dioxide Capture System Using Charged Colloidal Gas Aphrons, Xiaobing Li, Jesse G. Thompson, Kunlei Liu
Center for Applied Energy Research Faculty Patents
The present invention includes a system and process to reduce amine mist emissions (or MEA) from carbon capture systems using colloidal gas aphrons (CGA), and includes a method for separating and recovering an amine solvent (e.g., in the form of entrained droplets/mist and/or fine aerosol particles) from a carbon dioxide scrubbed flue gas stream exiting a carbon capture system (e.g., oil-fired power plants, coal-fired power plants, and/or natural gas combined cycle plants).
Austere Location Wind Turbine Energy System Analysis, Lukas Cowen, Douglas S. Dudis, Torrey J. Wagner
Austere Location Wind Turbine Energy System Analysis, Lukas Cowen, Douglas S. Dudis, Torrey J. Wagner
Faculty Publications
One promising technology to combat an energy shortage in austere locations is wind energy. In combination with battery storage and generator backup, we explore the feasibility of using a hybrid energy system to reduce the volume of diesel fuel required. Modeling the energy demands in austere locations will enable missions in remote settings to optimize their energy costs, increased their energy resiliency and assure their supply. For a modeled time-series energy requirement that varied between 2.4 MW and 5.1 MW, the optimal wind system size was 9.9 MW of installed wind power paired with a 741 kWh battery. Assuming an …
Design Of A Portable Biogas Purification And Storage System, Anikumar Kosna, Bade Shrestha
Design Of A Portable Biogas Purification And Storage System, Anikumar Kosna, Bade Shrestha
Faculty Research and Creative Activities Award (FRACAA)
The objective of this study is to propose and design a commercial portable purification and storage system to commercialize biogas (which mainly consists of 45 - 75 % of methane and 15 - 16% of carbon dioxide), produced from household/non-commercial biogas plants. The selection of purification process is based on the portability of the purification system.
Fischer–Tropsch: Product Selectivity–The Fingerprint Of Synthetic Fuels, Wilson D. Shafer, Muthu Kumaran Gnanamani, Uschi M. Graham, Jia Yang, Cornelius M. Masuku, Gary Jacobs, Burtron H. Davis
Fischer–Tropsch: Product Selectivity–The Fingerprint Of Synthetic Fuels, Wilson D. Shafer, Muthu Kumaran Gnanamani, Uschi M. Graham, Jia Yang, Cornelius M. Masuku, Gary Jacobs, Burtron H. Davis
Center for Applied Energy Research Faculty and Staff Publications
The bulk of the products that were synthesized from Fischer–Tropsch synthesis (FTS) is a wide range (C1–C70+) of hydrocarbons, primarily straight-chained paraffins. Additional hydrocarbon products, which can also be a majority, are linear olefins, specifically: 1-olefin, trans-2-olefin, and cis-2-olefin. Minor hydrocarbon products can include isomerized hydrocarbons, predominantly methyl-branched paraffin, cyclic hydrocarbons mainly derived from high-temperature FTS and internal olefins. Combined, these products provide 80–95% of the total products (excluding CO2) generated from syngas. A vast number of different oxygenated species, such as aldehydes, ketones, acids, and alcohols, are also embedded in this product range. …
36% Reduction In Fuel Resupply Using A Hybrid Generator & Battery System For An Austere Location, David J. Chester, Torrey J. Wagner, Douglas S. Dudis
36% Reduction In Fuel Resupply Using A Hybrid Generator & Battery System For An Austere Location, David J. Chester, Torrey J. Wagner, Douglas S. Dudis
Faculty Publications
The DOD energy policy is to increase energy security resiliency, and mitigate costs in the use and management of energy[1] Forward operating bases (FOBs) are remote, austere base camps that support an operationally defined mission with a limited or no ability to draw from an energy grid and have historically relied on diesel-powered generators for the primary production of energy.[2] Generators are sized to meet a theoretical peak demand, but steady state loads are far below this peak, resulting in under-loaded generators.[3] Under-loaded diesel generators decrease efficiency and increase the need for maintenance, affecting the lifespan of …
Method Of Increasing Mass Transfer Rate Of Acid Gas Scrubbing Solvents, Joseph E. Remias, Cameron A. Lippert, Kunlei Liu
Method Of Increasing Mass Transfer Rate Of Acid Gas Scrubbing Solvents, Joseph E. Remias, Cameron A. Lippert, Kunlei Liu
Center for Applied Energy Research Faculty Patents
A method of increasing the overall mass transfer rate of acid gas scrubbing solids is disclosed. Various catalyst compounds for that purpose are also disclosed.
Research On Key Technology Of The 15 000 N·M High-Power Directional Drilling Rig, Fang Peng
Research On Key Technology Of The 15 000 N·M High-Power Directional Drilling Rig, Fang Peng
Coal Geology & Exploration
According to the actual demand for ultra-long distance directional drilling in coal seam and large diameter directional drilling in seam roof, and the function of compound directional drilling technology for drilling rig, the technical idea of modular development for the functional development and design of high-power directional drilling rig are put forward. Combined with the contradiction among high-power matching, large capacity output and compact layout design of drilling rig, the key technologies of 15 000 N·m high-power directional drilling rig are researched in this paper, including overall layout design, large capacity rotary head design and layer board analysis, large opening …
Hole-Bottom Hydraulic Pressurization Technology For Directional Drilling In Hard Rock In Underground Coal Mines, Xu Baolong, Yao Ningping, Wang Li, Cao Jing, Dou Xuqian
Hole-Bottom Hydraulic Pressurization Technology For Directional Drilling In Hard Rock In Underground Coal Mines, Xu Baolong, Yao Ningping, Wang Li, Cao Jing, Dou Xuqian
Coal Geology & Exploration
In order to solve the problem of large feeding pressure, low drilling efficiency and limited hole depth caused by the backing effect of drill string during directional drilling of deep hole in underground coal mines, a technical idea of using hydraulic tool to increase WOB was proposed. The structural design of the hydraulic pressurizer at the bottom of the hole was carried out by drawing on the structure of the hydraulic pressurizer in the field of oil drilling and combining the nearly horizontal drilling conditions in underground coal mines. The hydraulic parameters were designed by the theoretical calculation and the …
Progress And Prospects Of Coal Geological Work In Tibet, Qiao Junwei, Ning Shuzheng, Song Shiyu, Yang Cheng
Progress And Prospects Of Coal Geological Work In Tibet, Qiao Junwei, Ning Shuzheng, Song Shiyu, Yang Cheng
Coal Geology & Exploration
Through the summary of the coal geological work and achievements in Tibet for nearly 70 years, the current status and main results of coal geological exploration in the main coal mines in the region were reviewed. The formation age, distribution range, coal content and coal quality characteristics of coal-bearing strata in major coal mines in the region were found out. The division of coal-bearing tectonic units and coal-accumulating basins in Tibet was summarized, and the sedimentary systems and sedimentary environments of coal-bearing strata in the main coal-forming periods were preliminarily summarized. It is generally believed that the overall degree of …
Analysis Of Diffusion Properties Of Methane In Low Rank Coal, Meng Zhaoping, Zhang Guiyuan, Li Guoqing, Liu Jinrong
Analysis Of Diffusion Properties Of Methane In Low Rank Coal, Meng Zhaoping, Zhang Guiyuan, Li Guoqing, Liu Jinrong
Coal Geology & Exploration
Diffusion properties of methane in coal is an important reservoir parameter affecting CBM production. Using the lignite samples from the Xiaolongtan Formation of the Miocene Neogene in southeastern Yunnan Province, the isothermal adsorption experiments of methane in low rank coal were carried out. Based on the relationship between adsorption amount and time obtained from isothermal adsorption experiment, the diffusion coefficient of methane in coal was calculated by using an unipore model of unsteady gas diffusion. The diffusion law of methane in coal and its control mechanism were revealed. The results show that gas diffusion law in coal obeys Langmuir equation; …
Study On Complex Resistivity Of Artificial Sandstone Containing Conductive Mineral Under High Pressure, Tian Gang, Tang Xingong, Xiang Kui, Chi Meiyao
Study On Complex Resistivity Of Artificial Sandstone Containing Conductive Mineral Under High Pressure, Tian Gang, Tang Xingong, Xiang Kui, Chi Meiyao
Coal Geology & Exploration
Due to the complex pore structure and non-single skeleton composition, natural rock samples are more difficult to study than artificial rock samples. The standard rock samples with different mineral content and volume content were artificially synthesized by using brass powder, pyrite sand, graphite powder, epoxy resin, etc. Complex resistivity measurements were taken to the samples by using AutoLab-1000 equipment under different formation pressure conditions. The complex resistivity and the parameters of zero frequency resistivity, polarizability, and time constant of the artificial sandstone standard were derived based on Debye decomposition model. Made a discussion on relationship between parameters of the model, …
Theoretical Research On The Ploughing Rock Breaking Properties Of New Conical Pdc Cutter, Ju Pei, Wang Chuanliu
Theoretical Research On The Ploughing Rock Breaking Properties Of New Conical Pdc Cutter, Ju Pei, Wang Chuanliu
Coal Geology & Exploration
The researches on the conical PDC cutter are now focused on numerical simulation, field and laboratory tests, the theoretical analysis on its mechanical properties has not been reported. Therefore, the tensile shear rock breaking mechanism and cutting load distribution characteristics of the conical PDC cutter are described by numerical simulation, the theoretical formula of the cutting load is derived according to the energy balance principle. Results show that comparing with the conventional cylindrical PDC cutter, the rock breaking process of conical PDC cutter is more stable, the cutting load is influenced by the rock properties, the parameters of cutter structure, …