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Pilot Demonstration of Technology for the Production of High Value Materials from the Ultra-Fine (PM2.5) Fraction of Coal Combustion Ash

Description: The overall objective of this research was to determine the feasibility of recovering a very fine fraction of fly ash, that is 5 microns in diameter or less and examining the characteristics of these materials in new or at least less traditional applications. These applications included as a polymer filler or as a 'super' pozzolanic concrete additive. As part of the effort the ash from 6 power plants was investigated and characterized. This work included collection from ESP Hoppers and ponds. T… more
Date: July 18, 2008
Creator: Robl, T. L.; Groppo, J. G.; Rathbone, R.; Marrs, B. & Jewell, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pilot Demonstration of Technology for the Production of High Value Materials from the Ultra-Fine (PM 2.5) Fraction of Coal Combustion Ash

Description: During this reporting period, efforts focused on improving our understanding of the basic operating principles of the lamella classifier. It was determined from testing that product grade is primarily a function of the classifier configuration and operation and the feed grade has relatively minor influence. Additionally, within the range of the testing conducted, the feed density did not seem to have an impact of the yield. Thus, the product composition will not be strongly influenced by the va… more
Date: May 12, 2006
Creator: Robl, T.L.; Groppo, J.G. & Rathbone, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Fischer-Tropsch Synthesis and Water-Gas Shift Catalystes to Poisons form High-Temperature High-Pressure Entrained-Flow (EF) Oxygen-Blown Gasifier Gasification of Coal/Biomass Mixtures

Description: There has been a recent shift in interest in converting not only natural gas and coal derived syngas to Fischer-Tropsch synthesis products, but also converting biomass-derived syngas, as well as syngas derived from coal and biomass mixtures. As such, conventional catalysts based on iron and cobalt may not be suitable without proper development. This is because, while ash, sulfur compounds, traces of metals, halide compounds, and nitrogen-containing chemicals will likely be lower in concentratio… more
Date: September 30, 2009
Creator: Davis, Burton; Jacobs, Gary; Ma, Wenping; Azzam, Khalid; ChakkamadathilMohandas, Janet & Shafer, Wilson
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Fischer-Tropsch Synthesis and Water-Gas Shift Catalysts to Poisons from High-Temperature High-Pressure Entrained-Flow (EF) Oxygen-Blown Gasifier Gasification of Coal/Biomass Mixtures

Description: The successful adaptation of conventional cobalt and iron-based Fischer-Tropsch synthesis catalysts for use in converting biomass-derived syngas hinges in part on understanding their susceptibility to byproducts produced during the biomass gasification process. With the possibility that oil production will peak in the near future, and due to concerns in maintaining energy security, the conversion of biomass-derived syngas and syngas derived from coal/biomass blends to Fischer-Tropsch synthesis … more
Date: September 30, 2010
Creator: Davis, Burtron; Jacobs, Gary; Ma, Wenping; Azzam, Khalid; Sparks, Dennis & Shafer, Wilson
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Sensitivity of Fischer-Tropsch Synthesis and Water-Gas Shift Catalysts to Poisons from High-Temperature High-Pressure Entrained-Flow (EF) Oxygen-Blown Gasifier Gasification of Coal/Biomass Mixtures

Description: There has been a recent shift in interest in converting not only natural gas and coal derived syngas to Fischer-Tropsch synthesis products, but also converting biomass-derived syngas, as well as syngas derived from coal and biomass mixtures. As such, conventional catalysts based on iron and cobalt may not be suitable without proper development. This is because, while ash, sulfur compounds, traces of metals, halide compounds, and nitrogen-containing chemicals will likely be lower in concentratio… more
Date: September 30, 2011
Creator: Davis, Burton; Jacobs, Gary; Ma, Wenping; Sparks, Dennis; Azzam, Khalid; Mohandas, Janet Chakkamadathil et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of an Advanced Fine Coal Suspension Dewatering Process

Description: With the advancement in fine coal cleaning technology, recovery of fine coal (minus 28 mesh) has become an attractive route for the U.S. coal industry. The clean coal recovered using the advanced flotation technology i.e. column flotation, contains on average 20% solids and 80% water, with an average particle size of 35 microns. Fine coal slurry is usually dewatered using a vacuum dewatering technique, providing a material with about 25 to 30 percent moisture. The process developed in this proj… more
Date: April 30, 2008
Creator: Parekh, B. K. & Patil, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Description: Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral and coal processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Lab… more
Date: September 20, 2007
Creator: Tao, Daniel; Honaker, R. & Parekh, B. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Center for Coal-Derived Low Energy Materials for Sustainable Construction

Description: The overarching goal of this project was to create a sustained center to support the continued development of new products and industries that manufacture construction materials from coal combustion by-products or CCB’s (e.g., cements, grouts, wallboard, masonry block, fillers, roofing materials, etc). Specific objectives includes the development of a research kiln and associated system and the formulation and production of high performance low-energy, low-CO2 emitting calcium sulfoaluminate (C… more
Date: June 30, 2012
Creator: Jewell, Robert; Robl, Tom & Rathbone, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

C1 Chemistry for the Production of Ultra-Clean Liquid Transportation Fuels and Hydrogen

Description: Faculty and students from five universities--the University of Kentucky, University of Pittsburgh, University of Utah, West Virginia University, and Auburn University--are collaborating in a research program to develop C1 chemistry processes to produce ultra-clean liquid transportation fuels and hydrogen, the zero-emissions transportation fuel of the future. The feedstocks contain one carbon atom per molecular unit. They include synthesis gas (syngas), a mixture of carbon monoxide and hydrogen … more
Date: March 31, 2003
Creator: Huffman, Gerald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Multi-Product Coal Utilization By-Product Processing Plant

Description: The objective of the project is to build a multi-product ash beneficiation plant at Kentucky Utilities 2,200-MW Ghent Generating Station, located in Carroll County, Kentucky. This part of the study includes an investigation of the secondary classification characteristics of the ash feedstock excavated from the lower ash pond at Ghent Station.
Date: September 30, 2006
Creator: Groppo, John & Robl, Thomas
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Surface Enhancement Technology for Decreasing Wear and Corrosion of Equipment Used for Mineral Processing

Description: Equipment wear is a major concern in the mineral processing industry, which dramatically increases the maintenance cost and adversely affects plant operation efficiency. In this research, novel surface treatment technologies, High Density Infrared (HDI) and Laser Surface Engineering (LSE) surface coating processes were developed for the surface enhancement of selected mineral processing equipment. Microstructural and mechanical properties of the coated specimens were characterized. Laboratory-s… more
Date: July 20, 2006
Creator: Tao, Daniel & Blue, Craig A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Multi-Product Coal Utilization By-Product Processing Plant

Description: The objective of the project is to build a multi-product ash beneficiation plant at Kentucky Utilities 2,200-MW Ghent Generating Station, located in Carroll County, Kentucky. This part of the study includes an investigation of the secondary classification characteristics of the ash feedstock excavated from the lower ash pond at Ghent Station. The market study for the products of the processing plant (Subtask 1.6), conducted by Cemex, is reported herein. The study incorporated simplifying assump… more
Date: December 31, 2006
Creator: Jackura, Andrew; Groppo, John & Robl, Thomas
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Sequestration on Surface Mine Lands

Description: A major effort this quarter was to inventory all the planted areas to evaluate the diameter and height growth as well as determine survival rates. Soil bulk density and compaction continue to be evaluated on all the areas to determine the effects on tree growth and survival. The hydrologic quantity and quality are continuously monitored and quantified. Much effort was also expended in preparing technical presentations for professional meeting and field trips for a variety of audiences.
Date: December 7, 2005
Creator: Graves, Donald H.; Barton, Christopher; Sweigard, Richard & Warner, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pilot Demonstration of Technology for the Production of High Value Materials from the Ultra-Fine (PM 2.5) Fraction of Coal Combustion Ash

Description: Work on the project focused on the determination of the hydraulic classification characteristics of the Coleman and Mill Creek ashes. The work utilized the hydraulic classifier developed earlier in the project. Testing included total yield, recovery of <5 {micro}m ash diameter particles and LOI partitioning as functions of dispersant dosage and type, retention time and superficial velocity. Yields as high as 21% with recoveries of up to 2/3 of the <5 {micro}m ash fractions were achieved. … more
Date: December 14, 2005
Creator: Robl, T.L.; Groppo, J.G. & Rathebone, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Multi-Product Coal Utilization By-Product Processing Plant

Description: The overall objective of this project is to design, construct, and operate an ash beneficiation facility that will generate several products from coal combustion ash stored in a utility ash pond. The site selected is LG&E's Ghent Station located in Carroll County, Kentucky. The specific site under consideration is the lower ash pond at Ghent, a closed landfill encompassing over 100 acres. Coring activities revealed that the pond contains over 7 million tons of ash, including over 1.5 millio… more
Date: June 30, 2009
Creator: Robl, Thomas & Groppo, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced Multi-Product Coal Utilization By-Product Processing Plant

Description: The objective of the project is to build a multi-product ash beneficiation plant at Kentucky Utilities 2,200-MW Ghent Generating Station, located in Carroll County, Kentucky. Phase 1 was completed successfully, but the project did not continue on to Phase 2 due to withdrawal of CEMEX from the project. Attempts at replacing CEMEX were not successful. Problematic to the continuation of the project was its location in the Ohio Valley which is oversupplied and has low prices for fly ash and the cha… more
Date: March 31, 2007
Creator: Robl, Thomas & Groppo, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In Situ Electrostatic Separation of Ambient PM2.5 into Source-Specific Fractions During Collection in a FRM Sampler

Description: Coal combustion is generally viewed as a major source of PM2.5 emissions into the atmosphere. For some time, toxicologists have been asking for an exposure environment enriched with the coal combustion source specific PM{sub 2.5} to conduct meaningful exposure studies to better understand the mechanisms of the adverse health effects of coal combustion specific PM2.5 in the ambient environment. There are several unique characteristics of primary PM generated from coal combustion. In this researc… more
Date: July 31, 2006
Creator: Shah, Naresh; Huggins, Frank E. & Huffman, Gerald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Novel Water-Gas Shift Membrane Reactor

Description: This report summarizes the objectives, technical barrier, approach, and accomplishments for the development of a novel water-gas-shift (WGS) membrane reactor for hydrogen enhancement and CO reduction. We have synthesized novel CO{sub 2}-selective membranes with high CO{sub 2} permeabilities and high CO{sub 2}/H{sub 2} and CO{sub 2}/CO selectivities by incorporating amino groups in polymer networks. We have also developed a one-dimensional non-isothermal model for the countercurrent WGS membrane… more
Date: December 29, 2004
Creator: Ho, W. S. Winston
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Pilot Demonstration of Technology fo the Production of High Value Materials from the Ultra-Fine (PM 2.5) Fraction of Coal Combustion Ash

Description: Work on the project primarily focused on the design and testing of different hydraulic classifier configurations. A four cell, open channel, cross flow classifier with and without weirs separating the cells was evaluated. Drawbacks to this configuration included thick sediment compression zones and relatively low throughput. The configuration was redesigned with inclined lamellae plates, to increase sedimentation area and decreased sediment compression zone thickness. This configuration resulte… more
Date: June 27, 2005
Creator: Robl, T.L.; Groppo, J.G. & Henke, K.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

C1 Chemistry for the Production of Ultra-Clean Liquid Transportation Fuels and Hydrogen

Description: Faculty and students from five universities--the University of Kentucky, University of Pittsburgh, University of Utah, West Virginia University, and Auburn University--are collaborating in a research program to develop C1 chemistry processes to produce ultra-clean liquid transportation fuels and hydrogen, the zero-emissions transportation fuel of the future. The feedstocks contain one carbon atom per molecular unit. They include synthesis gas (syngas), a mixture of carbon monoxide and hydrogen … more
Date: March 31, 2005
Creator: Huffman, Gerald P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Sequestration on Surface Mine Lands

Description: A major effort this quarter was to inventory all the planted areas to evaluate the diameter and height growth as well as determine survival rates. Soil bulk density and compaction continue to be evaluated on all the areas to determine the effects on tree growth and survival. The hydrologic quantity and quality are continuously monitored and quantified. Much effort was also expended in preparing technical presentations for professional meeting and for the preparation of the final project report.
Date: May 2, 2006
Creator: Graves, Donald H.; Barton, Christopher; Sweigard, Richard & Warner, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Carbon Sequestration on Surface Mine Lands

Description: A major effort this quarter was to continue the evaluation of the inventory data in preparation for the submission of the final report. The hydrologic quantity and quality are continuously monitored and quantified. Much effort was also expended in preparing technical presentations for professional meeting and for the preparation of the final project report.
Date: May 2, 2006
Creator: Graves, Donald H.; Barton, Christopher; Sweigard, Richard & Warner, Richard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of an Advanced Deshaling Technology to Improve the Energy Efficiency of Coal Handling, Processing, and Utilization Operations

Description: The concept of using a dry, density-based separator to achieve efficient, near-face rock removal, commonly referred to as deshaling, was evaluated in several applications across the U.S.. Varying amounts of high-density rock exist in most run-of-mine feed. In the central Appalachian coalfields, a rock content exceeding 50% in the feed to a preparation plant is commonplace due to high amounts of out-of-seam dilution made necessary by extracting coal from thin seams. In the western U.S, an increa… more
Date: September 30, 2007
Creator: Honaker, Rick & Luttrell, Gerald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Aging Mechanisms in Lean NOx Traps

Description: Lean NO{sub x} traps (LNTs) represent a promising technology for the abatement of NO{sub x} under lean conditions. Although LNTs are starting to find commercial application, the issue of catalyst durability remains problematic. LNT susceptibility to sulfur poisoning is the single most important factor determining effective catalyst lifetime. The NO{sub x} storage element of the catalyst has a greater affinity for SO{sub 3} than it does for NO{sub 2}, and the resulting sulfate is more stable tha… more
Date: March 31, 2010
Creator: Crocker, Mark
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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