Jeffrey Benoit

Jeffrey Benoit

Jupiter, Florida, United States
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Dynamic and accomplished global business leader and product manager with over 35 years…

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Experience

  • Power Systems Mfg., LLC, a Hanwha company Graphic

    Power Systems Mfg., LLC, a Hanwha company

    United States

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    Florida, United States

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    Genoa, Italy & Jupiter, Florida, USA

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    Jupiter, Florida

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    Jupiter, Florida

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    Jupiter, Florida

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    Schenectady, NY

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    Schenectady, NY

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    Knolls Atomic Power Laboratory, Niskayuna, NY

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    Lynn, MA

Education

Publications

  • Field Conversion of a Low Firing Frame 7B Gas Turbine Power Plant to Ultra-Low Emission Combustion

    Proceedings of ASME TurboExpo 2015 : GT2015-42937

    The search for power plant sustainability options
    continues as regulating agencies exert more stringent
    industrial gas turbine emission requirements on operators.
    Purchasing power for resale, de-commissioning current
    capabilities altogether and repowering by replacing or
    converting existing equipment to comply with emissions
    standards are economic-driven options contemplated by
    many mature gas turbine operators.
    NRG’s Gilbert power plant based in Milford, NJ…

    The search for power plant sustainability options
    continues as regulating agencies exert more stringent
    industrial gas turbine emission requirements on operators.
    Purchasing power for resale, de-commissioning current
    capabilities altogether and repowering by replacing or
    converting existing equipment to comply with emissions
    standards are economic-driven options contemplated by
    many mature gas turbine operators.
    NRG’s Gilbert power plant based in Milford, NJ began
    commercial operation in 1974 and is fitted with four (4)
    natural gas fired GE’s 7B gas turbine generators with two
    each exhausting to HRSG’s feeding one (1) steam turbine
    generator. The gas turbine units, originally configured with
    diffusion flame combustion systems with water injection,
    were each emitting 35 ppm NOx with the New Jersey
    High Energy Demand Day (HEED) regulatory mandate to
    reduce NOx emissions to sub 10 ppm by May 1st, 2015.
    Studies were conducted by the operator to evaluate the
    economic viability & installation of environmental controls
    to reduce NOx emissions. It was determined that
    installation of post-combustion environmental controls at
    the facility was both cost prohibitive and technically
    challenging, and would require a fundamental
    reconfiguration of the facility. Based on this economic
    analysis, the ultra-low emission combustion system
    conversion package was selected as the best cost-benefit
    solution.
    This technical paper will focus on the ultra low
    emissions technology and key features employed to
    achieve these low emissions, a description of the design
    challenges and solution to those, a summary of the

    customer considerations in down selecting options and
    an overview of the conversion scope. Finally, a technical
    discussion of the low emissions operational flexibility will
    be provided including performance results of the
    converted units.

  • Ultra-Low Emission Combustion & Control System Installation into Mature Power Plant Gas Turbines

    Journal of Engineering for Gas Turbines and Power

    The search for power plant sustainability options continues as regulating agencies exert more stringent industrial gas turbine emission requirements on operators. Purchasing power for resale, decommissioning current capabilities altogether and re-powering by replacing or converting existing equipment to comply with emissions standards are economic-driven options contemplated by many mature gas turbine operators.

    One Las Vegas Nevada, USA operator, NV Energy, with four (4) natural gas…

    The search for power plant sustainability options continues as regulating agencies exert more stringent industrial gas turbine emission requirements on operators. Purchasing power for resale, decommissioning current capabilities altogether and re-powering by replacing or converting existing equipment to comply with emissions standards are economic-driven options contemplated by many mature gas turbine operators.

    One Las Vegas Nevada, USA operator, NV Energy, with four (4) natural gas fired W501B6 Combined Cycle units at their Edward W. Clark Generating Station, was in this situation in 2006. The units, originally configured with diffusion flame combustion systems, were permitted at 103 ppm NOx with regulatory mandates to significantly reduce NOx emissions to below 5ppm by the end of 2009. Studies were conducted by the operator to evaluate the economic viability of using a Selective Catalytic Reduction (SCR) system, which would have forced significant modifications to the exhaust system and heat recovery steam generator (HRSG), or convert the turbines to operate with dry low-emissions combustion systems. Based on life cycle cost and installation complexity, the ultra-low emission combustion system was selected.

    This technical paper focuses on a short summary of the end user considerations in downselecting options, the ultra low emissions technology and key features employed to achieve these low emissions, an overview of the conversion scope and a review and description of the control technology employed. Finally, a technical discussion of the low emissions operational flexibility will be provided including performance results of the converted units.

    See publication

  • Field Conversion of Mature Power Plant Gas Turbines to Ultra Low Emissions Combustion & Control Systems

    Proceedings of ASME Turbo Expo 2010/ASME

    The search for power plant sustainability options
    continues as regulating agencies exert more stringent
    industrial gas turbine emission requirements on operators.
    Purchasing power for resale, decommissioning current
    capabilities altogether and re-powering by replacing or
    converting existing equipment to comply with emissions
    standards are economic-driven options contemplated by
    many mature gas turbine operators.
    One Las Vegas Nevada, USA operator, NV Energy,
    with four…

    The search for power plant sustainability options
    continues as regulating agencies exert more stringent
    industrial gas turbine emission requirements on operators.
    Purchasing power for resale, decommissioning current
    capabilities altogether and re-powering by replacing or
    converting existing equipment to comply with emissions
    standards are economic-driven options contemplated by
    many mature gas turbine operators.
    One Las Vegas Nevada, USA operator, NV Energy,
    with four (4) natural gas fired W501B6 Combined Cycle
    units at their Edward W. Clark Generating Station, was in
    this situation in 2006. The units, originally configured with
    diffusion flame combustion systems, were permitted at
    103 ppm NOx with regulatory mandates to significantly
    reduce NOx emissions to below 5ppm by the end of 2009.
    Studies were conducted by the operator to evaluate the
    economic viability of using a Selective Catalytic Reduction
    (SCR) system, which would have forced significant
    modifications to the exhaust system and heat recovery
    steam generator (HRSG), or convert the turbines to
    operate with dry low-emissions combustion systems.
    Based on life cycle cost and installation complexity, the
    ultra-low emission combustion system was selected.
    This technical paper focuses on a short summary of
    the customer considerations in downselecting options, the
    ultra low emissions technology and key features
    employed to achieve these low emissions, an overview of
    the conversion scope and a review and description of the
    control technology employed. Finally, a technical
    discussion of the low emissions operational flexibility will
    be provided including performance results of the
    converted units.

    See publication

  • Emissions Impossible

    Power Engineering / Pennwell

    Increasingly restrictive emission regulations for gas turbines from governmental agencies are driving key technology decisions across the United States, Europe, the Middle East and Asia. For example, in Texas, United States, regulations are forcing permit holders in certain industrial areas to ratchet down oxides of nitrogen (NOx) emission levels by over 80% by the end of 2008. These restrictions are forcing power plants operators to aggressively evaluate cost / performance strategies to…

    Increasingly restrictive emission regulations for gas turbines from governmental agencies are driving key technology decisions across the United States, Europe, the Middle East and Asia. For example, in Texas, United States, regulations are forcing permit holders in certain industrial areas to ratchet down oxides of nitrogen (NOx) emission levels by over 80% by the end of 2008. These restrictions are forcing power plants operators to aggressively evaluate cost / performance strategies to insure continued profitable operation. Options typically include shutting down certain facilities, changing turbine operational profile, replacement of combustion systems with more modern technology or installation of Selective Catalytic Reduction (SCR) systems. Selection among these options are driven by complex plant and company-wide risk-based cost benefit analyses to select the best solutions.

    Improvements today in the technology of lean pre-mix combustion for gas turbines can result in reduction of NOx and carbon monoxide (CO) emissions to ultra-low levels without using Selective Catalytic Reduction (SCR’s) or Oxidation Catalysts (OCAT’s) and often provides the end user with the most cost effective solution to addressing these requirements. This article describes the demonstrated current field performance of dry, lean-premixed combustion systems developed for direct replacement in Frame 6B, 7E & 9E industrial gas turbines previously configured with either the OEM’s DLN-1 combustion system or converted from a standard diffusion combustion system. The LEC-III® combustion system, developed by Power Systems Mfg. LLC (PSM), an Alstom Company, has proven sub-4ppm NOx and single digit CO emissions levels over the entire load operating range with natural gas fuel, from full base load down to below 55% of full load conditions in customer machines.

    See publication

  • Site Conversion and Field Performance of an Ultra Low Emission Combustion System for the GE Frame 7EA Gas Turbine

    Proceedings of ASME Turbo Expo 2008 / ASME

    See publication

Patents

  • Combustion liner seal with heat transfer augmentation

    Issued US 7,007,482

    A gas turbine combustion liner is disclosed having an alternate interface region between it and a transition duct where the cooling effectiveness and heat transfer along the aft end of the combustion liner is improved, resulting in extended component life. The region of the combustion liner proximate its second end comprises a plurality of first feed holes, a plurality of spring seals that seal against a transition duct, a cooling ring having a plurality of second feed holes, that with the…

    A gas turbine combustion liner is disclosed having an alternate interface region between it and a transition duct where the cooling effectiveness and heat transfer along the aft end of the combustion liner is improved, resulting in extended component life. The region of the combustion liner proximate its second end comprises a plurality of first feed holes, a plurality of spring seals that seal against a transition duct, a cooling ring having a plurality of second feed holes, that with the first feed holes pass a cooling fluid into an annulus formed between the cooling ring and combustion liner. The cooling fluid passes over a means for augmenting the heat transfer proximate the combustion liner second end, wherein the heat transfer augmentation preferably comprises a plurality of raised ridges that increases the surface area of the outer liner wall to turbulate the cooling fluid and maximize the cooling effectiveness.

  • Cloth Ring Seal

    Issued US 6,547,256

    A seal assembly including a low flow cloth ring seal having a cloth assemblage is provided for sealing a tubular cavity disposed between a tubular member and a mating body. The density of the cloth assemblage may be set according to a desired flow rate of gas through the cloth ring seal. In applications where more stiffness and strength is desired, the cloth ring seal may include a shim assemblage surrounded by the cloth assemblage.

  • Low leakage flexible cloth seals for turbine combustors

    Issued US 6,502,825

    Metallic cloth seals backed by stiff high temperature-resistant shims depend from a bracket for engagement in a slot of a transition piece for sealing between the transition piece and a first-stage nozzle. The high pressure acting on the shim forces the metallic cloth into engagement with the sealing surface in the slot. The lower edge of the shim is bent about, and overlies, the edge of the metallic cloth in a direction toward the sealing surface of the slot to choke any flow from the high…

    Metallic cloth seals backed by stiff high temperature-resistant shims depend from a bracket for engagement in a slot of a transition piece for sealing between the transition piece and a first-stage nozzle. The high pressure acting on the shim forces the metallic cloth into engagement with the sealing surface in the slot. The lower edge of the shim is bent about, and overlies, the edge of the metallic cloth in a direction toward the sealing surface of the slot to choke any flow from the high pressure region past the seal. Elongated spline seals are also inserted into opposed registering slots of adjacent transition pieces. The spline seals comprise metallic cloth folded onto itself backed by elongated stiff high temperature-resistant shims having lateral edges overlying the lateral edges of the cloth material. The overlying edges prevent leakage flow about the spline seals from the high pressure to the low pressure regions.

  • Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion

    Issued US 6,438,961

    A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the…

    A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled in the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.

Organizations

  • Gas Turbine Association (GTA)

    Associate Member Representative for PSM

    - Present

  • ASME TurboExpo Electric Power Committee

    Point Contact, Secretary, Vice Chair, Chair

    - Present

  • Pennwell PowerGen International Technical Conference Committee

    Gas Turbine Technologies Sub-committee Member

    - Present

  • ASME

    -

    - Present

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