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

  • Temperature Distribution in a Demonstration-Scale Filter Vessel With and Without Ash Bridging
    Advanced Powder Technology, 2008
    Co-Authors: Ali R Mazaheri, Goodarz Ahmadi, Isaac K Gamwo
    Abstract:

    The influence of ash bridging on the temperature distribution of the ceramic Filters of a demonstration-scale Filter Vessel is analyzed. The Reynolds stress turbulence model of FLUENT™ code is used to study the gas flow behavior inside the Filter Vessel. Particle equations of motions are employed, and transport and deposition of the micron-size aerosols are studied. Computational results predict that ash bridging leads to a non-uniform temperature distribution along the ceramic candle Filters in the bridging region. The analyses of ash bridging deposition on the internal surfaces of the Filter show that the absence of ash bridging tends to promote the deposition of particles of 10 μm on the surfaces.

  • 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.

  • hot gas flow and particle transport and deposition in a candle Filter Vessel
    Advanced Powder Technology, 2003
    Co-Authors: Ali R Mazaheri, Goodarz Ahmadi, Isaac K Gamwo
    Abstract:

    Abstract Hot-gas flow and particle transport and deposition in an industrial filtration system are studied. The special example of the Siemens-Westinghouse Filter Vessel at the Power System Development Facility at Wilsonville, Alabama is treated in detail. This tangential flow Filter Vessel contains clusters of 91 candle Filters, which are arranged in two tiers. The upper tier containing 36 candle Filters is modeled by six equivalent Filters. Seven equivalent Filters are used in the computational model to represent the 55 candle Filters in the lower tiers. The Reynolds stress turbulent model of FLUENT™ code is used, and the gas mean velocity and root mean square fluctuation velocities in the Filter Vessel are evaluated. The particle equation of motion used includes drag and gravitational forces. The mean particle deposition patterns are evaluated and the effect of particle size is studied. The computational results indicatethat large particlesof the order of 10 μm or larger are removed from the gas due to the centrifugal forces exerted by rotating flow between the shroud and the refractory.

  • Gas flow and particle deposition in the hot-gas Filter Vessel of the Pinon Pine project
    Powder Technology, 2002
    Co-Authors: Goodarz Ahmadi, Duane H. Smith
    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.

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

  • 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: 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.

  • Hot-Gas Filter Testing with a Transport Reactor Development Unit
    1996
    Co-Authors: M.l. Swanson, R.o. Ness
    Abstract:

    The objective of the hot-gas cleanup (HGC) work on the transport reactor demonstration unit (TRDU) located at the Environmental Research Center 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 will be the testing of hot- gas Filter elements as a function of particulate collection efficiency, Filter pressure differential, Filter cleanability, and durability during relatively short-term operation (100-200 hours). A Filter Vessel will be used in combination with the TRDU to evaluate the performance of selected hot- gas Filter elements under gasification operating conditions. This work will directly support 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 and the Clean Coal IV Pinon Pine IGCC Power Project. This program has a phased approach involving modification and upgrades to the TRDU and the fabrication, assembly, and operation of a hot-gas Filter Vessel (HGFV) capable of operating at the outlet design conditions of the TRDU. Phase 1 upgraded the TRDU based upon past operating experiences. Additions included a nitrogen supply system upgrade, upgraded LASH auger and 1807 coal feed lines, the addition of a second pressurized coal feed hopper and a dipleg ash hopper, and modifications to spoil the performance of the primary cyclone. Phase 2 included the HGFV design, procurement, and installation. Phases 3 through 5 consist of 200-hour hot-gas Filter tests under gasification conditions using the TRDU at temperatures of 540-650{degrees}C (1000-1200{degrees}F), 9.3 bar, and face velocities of 1.4, 2. and 3.8 cm/s, respectively. The increased face velocities are achieved by removing candles between each test.

  • Hot-gas Filter testing with the transport reactor demonstration unit
    1995
    Co-Authors: Mann, M.l. Swanson, R.o. Ness, J.s. Haley
    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 2-year project will be 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). This Filter Vessel will be utilized in combination with the TRDU to evaluate the performance of selected hot-gas Filter elements under gasification operating conditions. This work will directly support the power systems development facility (PSDF) 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.

  • Energy and environmental research emphasizing low-rank coal: Task 3.4 -- Hot-gas cleaning. Topical report (includes semiannual report for January--June 1995)
    1995
    Co-Authors: G.f. Weber, M.l. Swanson
    Abstract:

    This report summarizes the accomplishments of three subtasks completed in support of the current and future hot-gas cleanup activities at the Energy and Environmental Research Center (EERC). The overall objective of the EERC hot-gas cleanup task is to develop reliable methods to remove particulate matter from high-temperature, high-pressure gas streams produced from coal combustion and/or gasification. Near-term task objectives include (1) design, fabrication, and assembly of a high-temperature, high-pressure bench-scale Filter Vessel; (2) design, fabrication, and assembly of a high-temperature, high-pressure sampling train; and (3) the preliminary design of a pilot-scale high-temperature, high-pressure Filter Vessel and support systems. Bench-scale hot-gas Filter research will be performed with the pressurized fluid-bed reactor (PFBR) or the continuous fluid-bed reactor (CFBR) and a hot-gas Filter Vessel. The objectives of future work with the bench-scale system will be to determine particulate and vapor-phase alkali degradation of candidate ceramic Filter structures as well as Filter performance relative to particulate collection efficiency, differential pressure, and Filter cleanability. Construction of the high-temperature, high-pressure sampling system was intended to support bench- and pilot-scale activities with respect to conventional particulate sampling (total mass and particle-size distribution) and hazardous air pollutant (HAP) sampling. Finally, pilot-scale tests will be performed to evaluate Filter performance and determine alkali corrosion of ceramic materials with a hot-gas Filter Vessel attached to the EERC Transport Reactor Development Unit (TRDU).

Joo-hong Choi - One of the best experts on this subject based on the ideXlab platform.

  • Numerical Investigation of Coupling Effect in Multipipe Ceramic Filter Vessel
    Chinese Journal of Chemical Engineering, 2008
    Co-Authors: Joo-hong Choi
    Abstract:

    The Reynolds stress transport model and the Eulerian two-fluid model provided by the FLUENT code were applied to evaluate the gas-particle two-phase flow in the ceramic Filter Vessel. The ceramic Filter Vessel contains six candle Filters, which are arranged in the form of equilateral hexagon. The variation of the areal density of the Filter cake during the filtration and the back-pulse process were analyzed. The coupling effect between Filters, gas and solid, filtration and pulse cleaning process were investigated, respectively. The numerical results show a good approach to predict the particle distribution in the Vessel and the particle deposition on the Filter element. This study provides the base for the intensive study on the analysis of the gas-particle flow in the Filter Vessel.

  • Numerical simulation of gas/solid two-phase flow in ceramic Filter Vessel
    Powder Technology, 2008
    Co-Authors: Joo-hong Choi
    Abstract:

    Abstract Numerical simulation of ceramic Filter unit was carried out in order to predict the gas flow in the Filter Vessel during the pulse cleaning process using FLUENT code. The particle movement and particles distribution were analyzed using both the Lagrangian and Eulerian approaches. Ceramic Filter unit modeled in the study is composed of six elements of commercial Filter in the normal hexagon. In the comparison of the single Filter cleaning and two Filters cleaning coincidently, the last mode leads to more uniform gas flow in the Filter Vessel during the pulse cleaning process. So far the numerical results show a good approach to predict the particle distribution in the Vessel and the particle deposition on the Filter element. And this study will provide the base for the intensive study on the analysis of the gas–particle flow in the Filter Vessel.

  • numerical simulation of gas solid two phase flow in ceramic Filter Vessel
    Powder Technology, 2008
    Co-Authors: Joo-hong Choi
    Abstract:

    Abstract Numerical simulation of ceramic Filter unit was carried out in order to predict the gas flow in the Filter Vessel during the pulse cleaning process using FLUENT code. The particle movement and particles distribution were analyzed using both the Lagrangian and Eulerian approaches. Ceramic Filter unit modeled in the study is composed of six elements of commercial Filter in the normal hexagon. In the comparison of the single Filter cleaning and two Filters cleaning coincidently, the last mode leads to more uniform gas flow in the Filter Vessel during the pulse cleaning process. So far the numerical results show a good approach to predict the particle distribution in the Vessel and the particle deposition on the Filter element. And this study will provide the base for the intensive study on the analysis of the gas–particle flow in the Filter Vessel.

  • Numerical analysis of flow field in the hot gas Filter Vessel during the pulse cleaning process
    Powder Technology, 2007
    Co-Authors: Joo-hong Choi
    Abstract:

    The flow field is simulated for a ceramic Filter Vessel containing three candle Filters which are arranged in the form of an equilateral triangle. Grids generated by GAMBIT are adopted for the simulations. The Reynolds stress model provided by FLUENT code is applied to evaluate gas flow and temperature field in the Filter Vessel. The temperature profiles in the ceramic candle Filter cavity during the pulse cleaning process are analyzed under different operating conditions and for different lengths of candle Filter. The evolution of radial velocity in the porous wall of the Filters being cleaned and the normal working Filters as well as around the Filters is discussed. Sharp temperature change takes place in the top of the candle Filter which is subject to thermal stress. The phenomenon of temperature increase during the pulse cleaning process has been carefully observed and interpreted based on the effect of gas compression. The simulated results show qualitative agreement with the experimental field observations with the Filter Vessel.

Duane H. Smith - One of the best experts on this subject based on the ideXlab platform.

  • Gas flow and particle deposition in the hot-gas Filter Vessel of the Pinon Pine project
    Powder Technology, 2002
    Co-Authors: Goodarz Ahmadi, Duane H. Smith
    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.

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

  • Compositions of Filter-Vessel and Cyclone “Ash” from Pressurized Fluidized Bed Combustion
    Energy & Fuels, 2000
    Co-Authors: Kal Seshadri, Duane H. Smith
    Abstract:

    Excessively hard Filter cakes have occurred during filtration of fine particles from hot gases in pressurized fluidized bed combustion (PFBC) power plants in which dolomitic limestone was used as the SO x sorbent. These deposits forced premature plant shutdown and became a major barrier to successful development of the filtration technology. Our previous work implicated Mg 2 -Ca(SO 4 ) 3 as a chief cause of these excessive cake strengths, but no analytical technique was available to quantitatively relate Filter-cake physical properties and operating problems to Mg 2 -Ca(SO 4 ) 3 concentrations. Hence, a new Fourier transform infrared spectroscopy technique has been developed to analyze for Mg 2 Ca(SO 4 ) 3 in the presence of CaSO 4 and other compounds in PFBC samples. This technique was used to measure chemical compositions of various samples taken from either the cyclone or the hot-gas filtration Vessel of a PFBC demonstration power plant. These measurements clarify and further demonstrate the critical role played by Mg 2 Ca-(SO 4 ) 3 . Further measurements of the type described here should allow researchers to quantitatively determine how Mg 2 Ca(SO 4 ) 3 concentrations in Filter cakes depend on various operating parameters (e.g., temperatures, pressures, and composition of the coal and sorbent), and thus solve problems that have prevented the successful development of hot-gas filtration for PFBC power plants.

  • Gas Flow and Particle Deposition in the Hot Gas Filter Vessel at the Tidd 70 MWE PFBC Demonstration Power Plant
    Aerosol Science and Technology, 1998
    Co-Authors: Goodarz Ahmadi, Duane H. Smith
    Abstract:

    ABSTRACT Advanced hot-gas filtration systems for clean coal technologies have attracted considerable attention in recent years. The Tidd hot-gas filtration system was the first demonstration unit in the United States. The system was operational for about four years (1990–1994) and has provided considerable engineering information concerning the operation of the demonstration-scale hot-gas particle filtration system. The present work describes a computer simulation study of gas flow and particle transport and deposition in the Tidd 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 three tiers with a total of 384 Filters are modeled as three 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 a clean Filter system, the rate of ...

  • Particle Transport and Deposition in a Hot-Gas Cleanup Pilot Plant
    Aerosol Science and Technology, 1998
    Co-Authors: Goodarz Ahmadi, Duane H. Smith
    Abstract:

    ABSTRACT Development of hot-gas filtration systems for advanced clean coal technologies has attracted considerable attention in recent years. The Integrated Gasification and Cleanup Facility (IGCF), which is an experimental pilot plant for testing performance of ceramic candle Filters for hot-gas cleaning, has been operational at the Federal Energy Technology Center (FETC) in Morgantown, West Virginia, for several years. The present work describes a computer simulation study of gas flow and particle transport and deposition in the IGCF Filter Vessel with four Filters. The stress transport model of FLUENT™ code is used for evaluating the gas mean velocity and the root mean-square fluctuation velocity fields in the IGCF Filter Vessel. The instantaneous fluctuation velocity vector field is simulated by a Filtered Gaussian white-noise model. Ensembles of particle trajectories are evaluated using the recently developed PARTICLE code. The model equations of the code include the effects of lift and Brownian moti...

Isaac K Gamwo - One of the best experts on this subject based on the ideXlab platform.

  • Temperature Distribution in a Demonstration-Scale Filter Vessel With and Without Ash Bridging
    Advanced Powder Technology, 2008
    Co-Authors: Ali R Mazaheri, Goodarz Ahmadi, Isaac K Gamwo
    Abstract:

    The influence of ash bridging on the temperature distribution of the ceramic Filters of a demonstration-scale Filter Vessel is analyzed. The Reynolds stress turbulence model of FLUENT™ code is used to study the gas flow behavior inside the Filter Vessel. Particle equations of motions are employed, and transport and deposition of the micron-size aerosols are studied. Computational results predict that ash bridging leads to a non-uniform temperature distribution along the ceramic candle Filters in the bridging region. The analyses of ash bridging deposition on the internal surfaces of the Filter show that the absence of ash bridging tends to promote the deposition of particles of 10 μm on the surfaces.

  • hot gas flow and particle transport and deposition in a candle Filter Vessel
    Advanced Powder Technology, 2003
    Co-Authors: Ali R Mazaheri, Goodarz Ahmadi, Isaac K Gamwo
    Abstract:

    Abstract Hot-gas flow and particle transport and deposition in an industrial filtration system are studied. The special example of the Siemens-Westinghouse Filter Vessel at the Power System Development Facility at Wilsonville, Alabama is treated in detail. This tangential flow Filter Vessel contains clusters of 91 candle Filters, which are arranged in two tiers. The upper tier containing 36 candle Filters is modeled by six equivalent Filters. Seven equivalent Filters are used in the computational model to represent the 55 candle Filters in the lower tiers. The Reynolds stress turbulent model of FLUENT™ code is used, and the gas mean velocity and root mean square fluctuation velocities in the Filter Vessel are evaluated. The particle equation of motion used includes drag and gravitational forces. The mean particle deposition patterns are evaluated and the effect of particle size is studied. The computational results indicatethat large particlesof the order of 10 μm or larger are removed from the gas due to the centrifugal forces exerted by rotating flow between the shroud and the refractory.

  • 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