The Experts below are selected from a list of 1914 Experts worldwide ranked by ideXlab platform

Steffen Heidenreich - One of the best experts on this subject based on the ideXlab platform.

  • Hot Gas Filters
    Progress in Filtration and Separation, 2014
    Co-Authors: Steffen Heidenreich
    Abstract:

    Abstract A review on Hot Gas Filters is provided. Advantages and disadvantages of Hot Gas filtration are discussed. Hot Gas Filter media, Hot Gas Filter designs, as well as regeneration systems and concepts are reviewed. Moreover, applications using Hot Gas Filters are presented. Hot Gas Filters were firstly technically applied for flue Gas cleaning at the incineration of low-level contaminated radioactive wastes from nuclear power generation at the beginning of the 1970s. Nowadays, Hot Gas filtration is a reliable and well proven technology. Hundreds of Hot Gas Filters are applied worldwide in different processes, such as incineration and pyrolysis of radioactive waste, coal and biomass Gasification, fluid catalytic cracking in refineries, cement and glass production, recycling of metals, production of chemicals, catalysts, pigments and nanoparticles, smelting processes and metal production, as well as waste incineration and pyrolysis.

  • Corrosion of silicon carbide Hot Gas Filter candles in Gasification environment
    Journal of The European Ceramic Society, 2014
    Co-Authors: Sarah Schaafhausen, Steffen Heidenreich, Elena Yazhenskikh, M Müller
    Abstract:

    Abstract Reliable cleaning of the fuel Gas is required to meet the environmental regulations and to prevent corrosion and erosion of downstream components. The aggressive process environment in biomass-Gasification power generation systems or in biofuels production systems can cause corrosion in ceramic Hot Gas Filter candles used to clean the fuel Gas. Therefore, to improve the reliability and durability of Filters, the influence of steam, ash, and alkaline (earth) metals on the corrosion processes was studied for silicon carbide Filter candles fabricated by Pall Schumacher. Exposures with biomass and lignite ashes caused a macroscopically expansion as well as microstructural effects that were analysed by X-ray diffraction (XRD) and energy dispersive X-ray (EDX) spectroscopy. All effects are discussed and it is shown that the employment of silicon carbide Filter candles in water vapour containing, alkali-rich Gasification environment at high temperature is problematic.

  • Corrosion of alumina and mullite Hot Gas Filter candles in Gasification environment
    Journal of The European Ceramic Society, 2013
    Co-Authors: Sarah Schaafhausen, Steffen Heidenreich, Astrid Walch, Elena Yazhenskikh, M Müller
    Abstract:

    Abstract Reliable fuel Gas cleaning is required to meet environmental regulations as well as to prevent corrosion and erosion of downstream components. The aggressive process environment in biomass-Gasification power generation systems or in biofuels production systems causes corrosion in the ceramic Hot Gas Filter candles used to clean the fuel Gas. Therefore, in order to improve the reliability and durability of Filters, the influence of steam, ash, hydrogen sulfide, and alkaline metals on the corrosion processes was studied for alumina and mullite Filter candles fabricated by Pall Schumacher. Exposure to these contaminants effects the chemical composition of the binder phases resulting in exchange of alkaline metals and alkaline earth metals. Analyses by energy dispersive X-ray spectroscopy demonstrate the negative effect of silicon containing binder phases. These effects are discussed and it is shown that the usage of silicon-free binder phases in Hot Gas Filter candles for Gasification processes is promising.

  • Next generation of ceramic Hot Gas Filter with safety fuses integrated in venturi ejectors
    Fuel, 2013
    Co-Authors: Steffen Heidenreich, Walter Haag, Manfred Salinger
    Abstract:

    Abstract The next generation of ceramic Hot Gas Filter system of Pall Corporation with advanced venturi ejector blowback system, longer Filter candles and safety fuses integrated in the venturi ejector is presented. The cleaning performance of the advanced venturi ejector blowback system has been investigated using Filter candles of 1.5 m length with additionally installed safety fuses and with 2 m long Filter candles with and without safety fuses. Measurements of the pressure profiles in the Filter elements have been performed for a group of 48 Filter elements. The results of these measurements are reported and discussed. The results are compared to reference measurements using the previous standard venturi ejector blowback system with 1.5 m long Filter elements.

  • Hot Gas filtration – A review
    Fuel, 2013
    Co-Authors: Steffen Heidenreich
    Abstract:

    Abstract This paper provides a detailed survey on Hot Gas filtration. Fundamental aspects of filtration at higher temperatures are described first, including the influence of the temperature on dust properties and filtration behaviour. The main focus is on the review of Hot Gas Filter media as well as Hot Gas Filter systems. Moreover, applications of Hot Gas filtration are presented and discussed in detail, for example advanced coal Gasification as well as biomass Gasification and pyrolysis, incineration of low-level contaminated radioactive waste from nuclear power generation, waste incineration, fluid catalytic cracking in oil refineries and other processes. By using Hot Gas Filters, downstream equipment, such as heat exchangers, catalyst units, turbines and scrubbers, are protected from erosion and fouling, processes can be intensified or simplified as well as blocking by condensation or desublimation can be prevented. Energy efficiency, process intensification, PM 10 and PM 2.5 emission values, water shortage and water quality as well as overall process costs are topics which raise an increasing interest in Hot Gas filtration.

Goodarz Ahmadi - One of the best experts on this subject based on the ideXlab platform.

  • Aerosol transport and deposition analysis in a demonstration-scale Hot-Gas Filter vessel with alternate designs
    Advanced Powder Technology, 2008
    Co-Authors: Ali R Mazaheri, Goodarz Ahmadi
    Abstract:

    Abstract In this paper the effect of design alternation on the particle transport and deposition in industrial Hot-Gas Filter vessels are studied. Particular attention was given to the Siemens—Westinghouse Filter vessel at the Power Development Facility, Wilsonville, AL, USA. The Gas flow and particle deposition patterns for the current vessel are first evaluated. It is shown that in the present vessel, the majority of large particles (10–30 μm) are removed from the Gas stream in the shroud. Then, three alternative Filter vessel designs including using a short shroud, one with no shroud and a vessel with a deflector plate are considered. The effects of design alternations on the Gas flow and transport and deposition of particles of different sizes are evaluated. The simulation results suggest that it is possible to modify the shroud in a way to allow large particles to deposit on the Filters. Thus, the back-pulse process could more easily remove the Filter cake.

  • Gas flow and particle deposition in the Hot-Gas Filter vessel of the Pinon Pine project
    Powder Technology, 2002
    Co-Authors: Goodarz Ahmadi
    Abstract:

    Abstract Advanced pressurized fluidized bed combustors (PFBC) and integrated Gasification combined cycles (IGCC) as economical clean coal technologies for the 21st century have attracted considerable attention. The success of these advanced coal energy systems hinges on effective and reliable commercial-scale filtration of Gases at very high temperatures. The Pinon Pine Hot-Gas filtration system is the first industrial-scale application of an advanced particle filtration system in the United States. The system currently is becoming operational and will provide significant practical insights into operation of the industrial-scale Hot-Gas cleaning process. This study is concerned with a computer simulation of Hot-Gas flow and particle transport and deposition in the Pinon Pine Filter vessel. The FLUENT™ code is used for evaluating the Gas mean velocity, mean pressure, and the state of turbulence in the Filter vessel. The 748 Filters arranged into four tiers are modeled as four effective cylindrical Filters. The particle equation of motion that includes the nonlinear drag and the gravity is used. The particle deposition patterns are evaluated, and the effect of particle size is studied. The results show that, for clean Filters, the particle deposition rate of particles on different tiers depends on particle size. These differences could lead to nonuniform cake compositions and thicknesses on the candle Filters in different tiers.

  • PARTICLE TRANSPORTATION AND DEPOSITION IN Hot Gas Filter VESSELS - A COMPUTATIONAL AND EXPERIMENTAL MODELING APPROACH
    2002
    Co-Authors: Goodarz Ahmadi
    Abstract:

    In this project, a computational modeling approach for analyzing flow and ash transport and deposition in Filter vessels was developed. An Eulerian-Lagrangian formulation for studying Hot-Gas filtration process was established. The approach uses an Eulerian analysis of Gas flows in the Filter vessel, and makes use of the Lagrangian trajectory analysis for the particle transport and deposition. Particular attention was given to the Siemens-Westinghouse Filter vessel at Power System Development Facility in Wilsonville in Alabama. Details of Hot-Gas flow in this tangential flow Filter vessel are evaluated. The simulation results show that the rapidly rotation flow in the spacing between the shroud and the vessel refractory acts as cyclone that leads to the removal of a large fraction of the larger particles from the Gas stream. Several alternate designs for the Filter vessel are considered. These include a vessel with a short shroud, a Filter vessel with no shroud and a vessel with a deflector plate. The Hot-Gas flow and particle transport and deposition in various vessels are evaluated. The deposition patterns in various vessels are compared. It is shown that certain Filter vessel designs allow for the large particles to remain suspended in the Gas stream and to deposit on the Filters. The presence of the larger particles in the Filter cake leads to lower mechanical strength thus allowing for the back-pulse process to more easily remove the Filter cake. A laboratory-scale Filter vessel for testing the cold flow condition was designed and fabricated. A laser-based flow visualization technique is used and the Gas flow condition in the laboratory-scale vessel was experimental studied. A computer model for the experimental vessel was also developed and the Gas flow and particle transport patterns are evaluated.

  • Analysis of Steady-State Filtration and Backpulse Process in a Hot-Gas Filter Vessel
    Aerosol Science and Technology, 2002
    Co-Authors: Goodarz Ahmadi
    Abstract:

    The need to develop a technology for clean and efficient electric power generation has led to the development of advanced pressurized fluidized bed combustors (PFBC) and integrated Gasification combined cycles (IGCC). The effective filtration of Hot Gases for removal of ash and sulfur sorbent, however, is the key to the success of these advanced coal energy systems. Recently, attention has been given to the use of ceramic candle Filters for Hot-Gas cleaning. The ash cake formation on these Filters needs to be removed by the backpusle for their successful operation. In this paper, steady-state filtration as well as the transient Gas flow during the backpulse process in the integrated Gasification and cleanup facility (IGCF) (located at the National Energy Technology Laboratory, NETL) is studied. The steady-state filtration condition is first evaluated, using a compressible heat-conducting flow analysis. Particle transport patterns are studied, and the deposition patterns of 1-30 w m particles on the cerami...

  • Nonisothermal simulation of flows in the Hot-Gas Filter vessel at Wilsonville
    Particulate Science and Technology, 2002
    Co-Authors: Isaac K Gamwo, John S. Halow, Goodarz Ahmadi
    Abstract:

    A numerical simulation of nonisothermal Gas flows in the Hot-Gas Filter vessel at the Power Systems Development Facility in Wilsonville, Alabama is presented. The Gas velocity and thermal simulations are based on the Reynolds stress transport turbulence model of the FLUENT TM commercial CFD computer code. While earlier modeling studies were limited to isothermal conditions, in this study, the energy transport equation was solved in addition to the mass and momentum equations. The Gas flow and temperature field inside the Filter vessel were also studied. Results reveal that the Gas flow shows strong rotating flow regions outside the shroud and in the upper and lower parts of the body of the vessel. It is also shown that the temperature distribution is nonuniform with somewhat higher temperatures in the upper part of the Filter. The simulated results qualitatively agree with the experimental field observations of the Filter vessel. Filter vessel numerical simulation nonisothermal FLUENT

David P. Stinton - One of the best experts on this subject based on the ideXlab platform.

  • Development of slurry-based Ca0.5Sr0.5Zr4(PO4)6 (CS-50) coatings for SiC in fossil energy applications
    Materials at High Temperatures, 1999
    Co-Authors: V.m. Vaubert, Mark A Janney, David P. Stinton
    Abstract:

    Coatings of Ca 0.5 Sr 0.5 Zr 4 (PO 4 ) 6 (CS-50), an ultra-low thermal-expansion material, have been successfully developed to protect SiC-based materials from sulfate salt corrosion. The coatings were applied to fiber-reinforced, SiC-matrix composite heat exchanger tubes and clay-bonded SiC. Aqueous slurries were prepared and applied to the SiC substrates. One coating process for heat exchanger material substrates, consisted of mechanically dipping the samples in a slip. A spin-coating process has also been developed that produced thin, non-obstructing coatings for Hot-Gas Filter substrates. The thermal shock and corrosion resistance of coated parts were evaluated, and preliminary results are encouraging for the use of CS-50 as a protective coating.

  • Development of Ceramic Composite Hot-Gas Filters
    Journal of Engineering for Gas Turbines and Power, 1996
    Co-Authors: Roddie R. Judkins, David P. Stinton, B. L. Weaver, R.g. Smith, Edward M. Fischer, Joseph H. Eaton, J. Lawrence Kahnke, D. J. Pysher
    Abstract:

    A novel type of Hot-Gas Filter based on a ceramic fiber-reinforced ceramic matrix was developed and extended to full-size. 60-mm OD by 1.5-m-long, candle Filters. A commercially viable process for producing the Filters was developed, and the Filters are undergoing testing and demonstration throughout the world for applications in pressurized fluidized-bed combustion (PFBC) and integrated Gasification combined cycle (IGCC) plants. Development activities at Oak Ridge National Laboratory (ORNL) and at the 3M Company, and testing at the Westinghouse Science and Technology Center (STC) are presented. Demonstration tests at the Tidd PFBC are in progress. Issues identified during the testing and demonstration phases of the development are discussed. Resolution of the issues identified during testing and the status of commercialization of the Filters are described.

  • A Review of the Efficacy of Silicon Carbide Hot-Gas Filters in Coal Gasification and Pressurized Fluidized Bed Combustion Environments
    Journal of Engineering for Gas Turbines and Power, 1996
    Co-Authors: Roddie R. Judkins, David P. Stinton, Jackson H. Devan
    Abstract:

    Reviews of relevant literature and interviews with individuals cognizant of the state of the art in ceramic Filters for Hot-Gas cleaning were conducted. Thermodynamic calculations of the stability of various ceramic phases were also made. Based on these calculations, reviews, and interviews, conclusions were reached regarding the use of silicon carbide-based ceramics as Hot-Gas Filter media. Arguments are presented that provide the basis for our conclusion that high-purity silicon carbide is a viable material in the integrated coal Gasification combined cycle (IGCC) and pressurized fluidized-bed combustion (PFBC) environments we examined. Clay-bonded materials are, we concluded, suspect for these applications, their extensive use notwithstanding. Operations data we reviewed focused primarily on clay-bonded Filters, for which a great deal of experience exists. We used the clay-bonded Filter experience as a point of reference for our review and analysis.

  • Development of Ceramic Composite Hot-Gas Filters
    Volume 3: Coal Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, 1995
    Co-Authors: Roddie R. Judkins, David P. Stinton, B. L. Weaver, R.g. Smith, Edward M. Fischer, Joseph H. Eaton, J. Lawrence Kahnke, D. J. Pysher
    Abstract:

    A novel type of Hot-Gas Filter based on a ceramic fiber-reinforced ceramic matrix was developed and extended to fullsize, 60-mm OD by 1.5-meter-long, candle Filters. A commercially viable process for producing the Filters was developed, and the Filters are undergoing testing and demonstration throughout the world for applications in pressurized fluidized-bed combustion (PFBC) and integrated Gasification combined cycle (IGCC) plants. Development activities at Oak Ridge National Laboratory (ORNL) and at the 3M Company, and testing at the Westinghouse Science and Technology Center (STC) are presented. Demonstration tests at the Tidd PFBC are underway. Issues identified during the testing and demonstration phases of the development are discussed. Resolution of the issues and the status of commercialization of the Filters are described.

Bruce A. Dockter - One of the best experts on this subject based on the ideXlab platform.

  • Factors affecting the tensile strength of Hot-Gas Filter dust cakes
    Advanced Powder Technology, 2003
    Co-Authors: John P. Hurley, Bruce A. Dockter
    Abstract:

    The University of North Dakota Energy and Environmental Research Center is determining some of the fuel-, sorbent- and operations-related conditions that lead to blinding or bridging of Hot-Gas particle Filters in pressurized fluidized bed combustion systems. Several mechanisms contribute to the stickiness of dust particles within a Filter cake: electrostatic and van der Waals attractions, and mechanical, liquid and solid bridging. The magnitudes of these mechanism impacts depend on the size and composition distributions of the dust particles, cake porosity, Gas composition and system temperature. High-temperature tensile strength measurements of Filter dust cakes have shown that only a small amount of liquid is necessary to double the tensile strength of a cake. The amount of strength increase is related more to the wettability of the dust than to the liquid's viscosity or air-liquid surface tension. Also, if the tensile strength of a Filter cake is less than approximately 50 N/m2, the cake re-entrains after being pulsed off and can lead to blinding of the Filters. If the cake strength is over approximately 300 N/m2, it can bridge between Filters, in some cases forcing them apart and causing them to break. However, the factors affecting cake strength are not independent variables and laboratory measurements have shown that the tensile strength of Filter dust does not adequately explain its propensity to bridge across Filters in a Hot-Gas Filter system. A better measurement is the tensile strength divided by the density of the cake, or its specific strength. The authors have defined the cake specific strength as its critical thickness index (CTI) because it indicates the maximum thickness for which a cake would build before failing or shedding under its own weight. Laboratory measurements show that the CTI is a better indicator of the observed propensity of a particular dust to form bridges between Filters than its simple tensile strength.

  • Strength development at low temperatures in coal ash deposits
    Progress in Energy and Combustion Science, 1998
    Co-Authors: John P. Hurley, Jay A. Bieber, Jan W. Nowok, Bruce A. Dockter
    Abstract:

    At temperatures below approximately 1900°F, ash particles formed in coal-fired energy systems are relatively hard and not prone to sticking to system surfaces. However, if the ash collects on a surface not exposed to a shearing Gas flow such as the downstream side of a heat exchanger or the surface of a Hot-Gas Filter, the deposit can develop enough strength over a period of minutes to days so that it becomes difficult to remove, in some cases growing to sizes that impede the flow of Gas. This paper presents data from ongoing measurements of the significance of ash and Gas composition, deposit temperature, and time on the rates of strength development in simulated low-temperature ash deposits. Preliminary results of surface composition and particle-size distribution analyses of the ash, including submicron material, are also presented to explain the possible mechanisms of strength development.

  • Rates and Mechanisms of Strength Development in Low-Temperature Ash Deposits
    Applications of Advanced Technology to Ash-Related Problems in Boilers, 1996
    Co-Authors: John P. Hurley, Jay A. Bieber, Tina M. Strobel, Cathy A. O’keefe, Jan W. Nowok, Bruce A. Dockter
    Abstract:

    At temperatures below approximately 1900°F, ash particles formed in coal-fired energy systems are relatively hard and not prone to sticking to system surfaces. However, if the ash collects on a surface not exposed to a shearing Gas flow such as the downstream side of a heat exchanger or the surface of a Hot-Gas Filter, the deposit can develop enough strength over periods of minutes to days so that it becomes difficult to remove, in some cases growing to sizes that impede the flow of Gas. This paper presents data from ongoing measurements of the significance of ash and Gas composition, deposit temperature, and time on the rates of strength development in simulated low-temperature ash deposits. Preliminary results of surface composition and particle-size distribution analyses of the ash, including submicron material, are also presented to explain the possible mechanisms of strength development.

  • Hot-Gas Filter ash characterization
    1995
    Co-Authors: John P. Hurley, T. M. Strobel, Bruce A. Dockter
    Abstract:

    One of the key difficulties in the development of advanced pressurized fluidized-bed combustion (PFBC) and integrated Gasification combined-cycle (IGCC) systems is the need to remove particulates from the Gas stream at high temperatures and pressures. Research has revealed numerous cases of ash cake buildup on Filter elements that has been difficult to remove using on-line jet pulsing. The objectives of this research are to: (1) determine the mechanisms by which a difficult-to-clean ash is formed and how it blinds or bridges Hot-Gas Filters; (2) develop a method to determine the rate of blinding or bridging based on analyses of the feed coal and sorbent and on the operating conditions; and (3) provide suggestions for ways to prevent Filter blinding and bridging by the troublesome ash. Four tasks are being performed: Task 1--field sampling and archive sample analysis; Task 2--laboratory-scale testing; Task 3--bench-scale testing; and Task 4--computer modeling. Results are presented from the first two tasks.

  • Sticking Mechanisms in Hot-Gas Filter Ashes
    Impact of Mineral Impurities in Solid Fuel Combustion, 1
    Co-Authors: John P. Hurley, Bruce A. Dockter, Troy A. Roling, Jan W. Nowok
    Abstract:

    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 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 Gas–solid reactions also play roles in helping to bond the ash to the Filter and to itself. In order to develop methods to predict the formation of sticky ash in Hot-Gas filtration systems, the University of North Dakota Energy & Environmental Research Center (EERC) worked with EPRI and a consortium of companies in partnership with the U.S. Department of Energy (DOE) to determine the factors causing Hot-Gas cleanup Filters to develop deposits that can bridge the Filters and cause them to fail. The primary deliverable was the Filter Bridging Index Code, a graphics-driven computer code to tie all of the knowledge together and make possible the prediction of rates of Filter bridging based on coal, sorbent, Filter, and system parameters. The objectives of this project were threefold:

M.l. Swanson - One of the best experts on this subject based on the ideXlab platform.

  • Hot-Gas Filter Testing with a Transport Reactor Gasifier
    2002
    Co-Authors: M.l. Swanson, D.r. Hajicek
    Abstract:

    Today, coal supplies over 55% of the electricity consumed in the United States and will continue to do so well into the next century. One of the technologies being developed for advanced electric power generation is an integrated Gasification combined cycle (IGCC) system that converts coal to a combustible Gas, cleans the Gas of pollutants, and combusts the Gas in a Gas turbine to generate electricity. The Hot exhaust from the Gas turbine is used to produce steam to generate more electricity from a steam turbine cycle. The utilization of advanced Hot-Gas particulate and sulfur control technologies together with the combined power generation cycles make IGCC one of the cleanest and most efficient ways available to generate electric power from coal. One of the strategic objectives for U.S. Department of Energy (DOE) IGCC research and development program is to develop and demonstrate advanced Gasifiers and second-generation IGCC systems. Another objective is to develop advanced Hot-Gas cleanup and trace contaminant control technologies. One of the more recent Gasification concepts to be investigated is that of the transport reactor Gasifier, which functions as a circulating fluid-bed Gasifier while operating in the pneumatic transport regime of solid particle flow. This Gasifier concept providesmore » excellent solid-Gas contacting of relatively small particles to promote high Gasification rates and also provides the highest coal throughput per unit cross-sectional area of any other Gasifier, thereby reducing capital cost of the Gasification island.« less

  • Task 3.13 - Hot-Gas Filter testing. Semi-annual report, July 1, 1996--December 31, 1996
    1998
    Co-Authors: M.l. Swanson
    Abstract:

    The objectives of the Hot-Gas cleanup (HGC) work on the transport reactor demonstration unit (TRDU) located at the Energy & 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 3-year project is the testing of Hot-Gas Filter element performance (particulate collection efficiency, Filter pressure differential, Filter cleanability, and durability) as a function of temperature and Filter face velocity during short term operation (100-200 hours). The Filter vessel is used in combination with the TRDU to evaluate the performance of selected Hot-Gas Filter elements under Gasification operating conditions. This work directly supports the power systems development facility utilizing the M.W. Kellogg transport reactor located at Wilsonville, Alabama and, indirectly, the Foster Wheeler advanced pressurized fluid-bed combustor, also located at Wilsonville.

  • Task 3.13 - Hot-Gas Filter Testing
    1998
    Co-Authors: M.l. Swanson
    Abstract:

    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 3-year project is the testing of Hot-Gas Filter element performance (particulate collection efficiency, Filter pressure differential, Filter cleanability, and durability) as a fiction of temperature and Filter face velocity during short-term operation (100-200 hours). The Filter vessel is used in combination with the TRDU to evaluate the performance of selected Hot-Gas Filter elements under Gasification operating conditions. This work directly supports the power systems development facility (PSDF) utilizing the M.W. Kellogg transport reactor located at Wilsonville, Alabama (1) and, indirectly, the Foster Wheeler advanced pressurized fluid-bed combustor, also located at Wilsonville (2).

  • Characterization of Hot-Gas Filter ash under PFBC operating conditions
    1998
    Co-Authors: A. K. Henderson, M.l. Swanson, J. P. Hurley, T.m. Watne
    Abstract:

    The objective of this program was to perform bench scale dynamic tests of ash formation and long-term ash cake formation in pressurized fluidized bed combustion (PFBC) systems to help in the development of methods to predict possible Filter bridging problems and suggest possible strategies for mitigating these problems. During the program, four ash formation tests using a washed coal from the Consol Enlow Fork mine, with two size distributions of Plum Run dolomite at two different temperatures, were completed under conditions simulating the operation of the American Electric Power (AEP) Tidd PFBC. In addition, the same test matrix, plus two tests using no sorbent, was completed with the Belle Ayr Powder River Basin sub-bituminous coal, which will be used at the Southern Company Services (SCS) Wilsonville, Alabama, power systems development facility (PSDF).

  • Task 3.13 - Hot-Gas Filter Testing: Semi-annual report, July 1- December 31, 1995
    1997
    Co-Authors: M.l. Swanson
    Abstract:

    The objectives of the Hot-Gas cleanup (HGC) work on the transport reactor demonstration unit (TRDU) located at the Energy {ampersand} 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 cleanability, and durability) as a function of temperature and Filter face velocity during short-term operation (100-200 hours). The Filter vessel is used in combination with the TRDU to evaluate the performance of selected Hot-Gas Filter elements under Gasification operating conditions. This work directly supports the power systems development facility (PSDF) utilizing the M.W. Kellogg transport reactor located at Wilsonville, Alabama (1) and, indirectly, the Foster Wheeler advanced pressurized fluid-bed combustor, also located at Wilsonville.