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Bench-Scale Demonstration of Hot-Gas Desulfurization Technology

Description: The U.S. Department of Energy (DOE), Federal Energy Technology Center (FETC), is sponsoring research in advanced methods for controlling contaminants in hot coal gasifier gas (coal-derived fuel-gas) streams of integrated gasification combined-cycle (IGCC) power systems. The hot gas cleanup work seeks to eliminate the need for expensive heat recovery equipment, reduce efficiency losses due to quenching, and minimize wastewater treatment costs.
Date: December 1, 1998
Creator: Portzer, Jeffrey W. & Gangwal, Santosh K.
Partner: UNT Libraries Government Documents Department
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Particulate Hot Gas Stream Cleanup Technical Issues

Description: This is the fifteenth quarterly report describing the activities performed under Contract No. DE-AC21-94MC31160. The analyses of Hot Gas Stream Cleanup (HGCU) ashes and descriptions of filter performance studied under this contract are designed to address problems with filter operation that are apparently linked to characteristics of the collected ash. Task 1 is designed to generate a data bank of the key characteristics of ashes collected from operating advanced particle filters (APFs) and to … more
Date: August 31, 1998
Partner: UNT Libraries Government Documents Department
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ADVANCED SULFUR CONTROL CONCEPTS FOR HOT GAS DESULFURIZATION TECHNOLOGY

Description: The objective of this project is to develop a hot-gas desulfurization process scheme for control of H<sub>2</sub>S in HTHP coal gas that can be more simply and economically integrated with known regenerable sorbents in DOE/METC-sponsored work than current leading hot-gas desulfurization technologies. In addition to being more economical, the process scheme to be developed must yield an elemental sulfur byproduct. The Direct Sulfur Recovery Process (DSRP), a leading process for producing an elem… more
Date: September 30, 1998
Partner: UNT Libraries Government Documents Department
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Advanced Sulfur Control Concepts for Hot-Gas Desulfurization Technology

Description: This research project examined the feasibility of a second generation high-temperature coal gas desulfurization process in which elemental sulfur is produced directly during the sorbent regeneration phase. Two concepts were evaluated experimentally. In the first, FeS was regenerated in a H2O-O2 mixture. Large fractions of the sulfur were liberated in elemental form when the H2O-O2 ratio was large. However, the mole percent of elemental sulfur in the product was always quite small (<<1%) and a p… more
Date: October 31, 1998
Creator: Ortiz, A. Lopez; Harrison, D. P.; Groves, F. R.; White, J. D.; Zhang, S.; Huang, W. N. et al.
Partner: UNT Libraries Government Documents Department
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ADVANCED HOT GAS FILTER DEVELOPMENT

Description: This report describes the fabrication and testing of continuous fiber ceramic composite (CFCC) based hot gas filters. The fabrication approach utilized a modified filament winding method that combined both continuous and chopped fibers into a novel microstructure. The work was divided into five primary tasks. In the first task, a preliminary set of compositions was fabricated in the form of open end tubes and characterized. The results of this task were used to identify the most promising compo… more
Date: September 4, 1998
Creator: WAGNER, RICHARD A.
Partner: UNT Libraries Government Documents Department
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Hot-Gas Filter Ash Characterization Project

Description: Large-scale hot-gas filter testing over the past 10 years has revealed numerous cases of cake buildup on filter elements that has been difficult, if not impossible, to remove. At times, the cake can blind or bridge between candle filters, leading to filter failure. Physical factors, including particle-size distribution, particle shape, the aerodynamics of deposition, and system temperature, contribute to the difficulty in removing the cake, but chemical factors such as surface composition and g… more
Date: July 1, 1997
Creator: Swanson, M. L.; Hurley, J. P.; Dockter, B. A. & O`Keefe, C. A.
Partner: UNT Libraries Government Documents Department
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KINETICS OF Mn-BASED SORBENTS FOR HOT COAL GAS DESULFURIZATION

Description: Mixed manganese oxide sorbents have been investigated for high-temperature removal of hydrogen sulfide (the primary sulfur bearing compound) from hot coal gases. The sorbents were screened by thermodynamic equilibrium considerations for sulfidation. Preliminary experimental work using thermogravimetric analysis (TGA) indicated titania to be a superior substrate than alumina. Four formulations showing superior reactivity in a TGA were then tested in an ambient pressure fixed-bed reactor to deter… more
Date: September 15, 1997
Creator: BERNS, J.J.; SADECKI, K.A. & HEPWORTH, M.T.
Partner: UNT Libraries Government Documents Department
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Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters

Description: The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the presen… more
Date: January 3, 2006
Creator: VanOsdol, John
Partner: UNT Libraries Government Documents Department
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A new hot gas cleanup filter design methodology

Description: The fluid dynamics of Hot Gas Cleanup (HGCU) systems having complex geometrical configurations are typically analyzed using computational fluid dynamics codes (CFD) or bench-scale laboratory test facilities called cold-flow models (CFM). At the present time, both CFD and CFM can be effectively used for simple flows limited to one or two characteristic length scales with well defined boundary conditions. This is not the situation with HGCU devices. These devices have very complex geometries, low… more
Date: December 31, 1996
Creator: VanOsdol, J.G.; Dennis, R.A. & Shaffer, F.D.
Partner: UNT Libraries Government Documents Department
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Hot Gas Desulfurization PDU Project

Description: The process development unit (PDU) being constructed at METC will fill the strategic role of bridging the gap between post/current small-scale testing and future large-scale demonstrations. With the capability for both fluid-bed and transport reactor contacting, the project will provide a site for testing/proving hot gas desulfurization (HGD) process configurations and demonstrating sorbent suitability. Process conditions will be representative of anticipated commercial applications in terms of… more
Date: December 31, 1996
Creator: Bissett, L.A.
Partner: UNT Libraries Government Documents Department
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Advanced sulfur control concepts for hot gas desulfurization technology

Description: The objective of this project is to develop a hot-gas desulfurization process scheme for control of H{sub 2}S in HTHP coal gas that can be more simply and economically integrated with known regenerable sorbents in DOE/METC-sponsored work than current leading hot-gas desulfurization technologies. In addition to being more economical, the process scheme to be developed must yield an elemental sulfur byproduct.
Date: September 1, 1998
Partner: UNT Libraries Government Documents Department
open access

Particulate hot gas stream cleanup technical issues

Description: This is the tenth in a series of quarterly reports describing the activities performed under Contract No. DE-AC21-94MC31160. Analyses of Hot Gas Stream Cleanup (HGCU) ashes and descriptions of filter performance address aspects of filter operation that are apparently linked to the characteristics of the collected ash or the performance of the ceramic bed filter elements. Task I is designed to generate a data base of the key characteristics of ashes collected from operating advanced particle fil… more
Date: September 1, 1998
Partner: UNT Libraries Government Documents Department
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Task 3.13 -- Hot-gas filter testing. Semi-annual report, January 1--June 30, 1995

Description: The objectives of the hot-gas cleanup (HGC) work on the transport reactor demonstration unit (TRDU) located at the Energy and Environmental Research Center (EERC) is to demonstrate acceptable performance of hot-gas filter elements in a pilot-scale system prior to long-term demonstration tests. The primary focus of the experimental effort in the 2-year project is the testing of hot-gas filter element performance (particulate collection efficiency, filter pressure differential, filter cleanabilit… more
Date: August 1, 1997
Creator: Mann, M.D.
Partner: UNT Libraries Government Documents Department
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Advanced sulfur control concepts for hot gas desulfurization technology

Description: The objective of this project is to develop a hot-gas desulfurization process scheme for control of H{sub 2}S in HTHP coal gas that can be more simply and economically integrated with known regenerable sorbents in DOE/METC-sponsored work than current leading hot-gas desulfurization technologies. In addition to being more economical, the process scheme to be developed must yield an elemental sulfur byproduct.
Date: September 1, 1998
Partner: UNT Libraries Government Documents Department
open access

Strength testing of hot gas filters: Volume 6. Final report

Description: The strength of various ceramic hot gas filter materials has been evaluated by four laboratories: Argonne National Laboratory, DuPont Lanxide, Southern Research Institute and Babcock and Wilcox. The filter materials under study include (a) a Nextel{trademark}/SiC composite filter (from 3M), (b) PRD-66, an all oxide layered microstructure of alumina, mullite, cordierite and some amorphous material by DuPont Lanxide, (c) a Babcock and Wilcox material consisting of an oxide composite of chopped fi… more
Date: June 9, 1998
Creator: Faber, K.T.
Partner: UNT Libraries Government Documents Department
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Particulate hot gas stream cleanup technical issues

Description: The analyses of hot gas stream cleanup particulate samples and descriptions of filter performance studied under this contract were designed to address problems with filter operation that have been linked to characteristics of the collected particulate matter. One objective of this work was to generate an interactive, computerized data bank of the key physical and chemical characteristics of ash and char collected from operating advanced particle filters and to relate these characteristics to th… more
Date: September 30, 1999
Creator: Pontius, D. H. & Snyder, T. R.
Partner: UNT Libraries Government Documents Department
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PARTICULATE HOT GAS STREAM CLEANUP TECHNICAL ISSUES

Description: This quarterly report describes technical activities performed under Contract No. DE-AC21-94MC31160. The analyses of hot gas stream cleanup (HGCU) ashes and descriptions of filter performance studied under Task 1 of this contract are designed to address problems with filter operation that are apparently linked to characteristics of the collected ash. This report reviews the status of the HGCU data bank of ash and char characteristics, including the interactive querying of measured particulate p… more
Date: August 30, 1999
Creator: Pontius, D.H.
Partner: UNT Libraries Government Documents Department
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Fracture behavior of advanced ceramic hot-gas filters

Description: Microstructural, mechanical, and thermal-shock behavior of hot-gas candle filters obtained from different manufacturers have been evaluated. These filters include both monolithic ceramic and composite materials. Based on the results obtained so far, composite filters perform better than monolithic ceramic filters in a thermal-shock environment. During thermal-shock testing, the monolithic ceramic filters failed in a brittle (catastrophic) mode while composite filters showed a noncatastrophic mo… more
Date: May 1995
Creator: Singh, J. P.; Singh, D.; Smith, J. & Volz, H.
Partner: UNT Libraries Government Documents Department
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Development and Evaluation of Nanoscale Sorbents for Mercury Capture From Warm Fuel Gas

Description: The Mercury Testing Experimental System available in GTI's Hot Gas Cleanup laboratory was prepared for the project. As part of the shakedown testing, the system was checked for possible gas leaks and fixed. In addition, the mass flow controller was calibrated for diluent N{sub 2} stream. A major part of the shakedown testing was the calibration of the semi-continuous mercury analyzer and the verification of the permeation rate of the mercury permeation tube. It was found that the analyzer's mer… more
Date: January 1, 2005
Creator: Jadhav, Raja A. & Meyer, Howard
Partner: UNT Libraries Government Documents Department
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PRD-66 Gas Filter Development

Description: The PRD-66 manufacturing process offers a unique approach to the production of hot gas candle filters for application in Pressurized Fluidized Bed Combustors (PFBC) and Integrated Gas Combined Cycle (IGCC) power systems. Fabricated from readily available and inexpensive raw materials, the PRD-66 process uses an admixture of textile and ceramic concepts to produce an all-oxide filter element containing no refractor ceramic fiber (RCF) residues in the finished products. The use demonstration of t… more
Date: July 1, 1997
Creator: Forsythe, G.D. & Connolly, E.S.
Partner: UNT Libraries Government Documents Department
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