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Gas Quality Stakeholders Technical Committee Meeting

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Western Midway Sunset had events of reduced fuel heat content which caused ... Western Midway Sunset CO Emissions. vs Fuel Heat Content. CALIFORNIA ENERGY COMMISSION ... – PowerPoint PPT presentation

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Title: Gas Quality Stakeholders Technical Committee Meeting


1
Gas Quality Stakeholders Technical Committee
Meeting
  • September 20, 2005
  • Natural Gas QualityPower Turbine
    PerformanceDuring Heat Content Surge
  • Updated Information and Schedule
  • William Walters
  • Aspen Environmental Group
  • Sponsored by the California Energy Commission

2
Update and Schedule
  • Sutter Natural Gas Fuel Wobbe was determined.
    Los Medanos, Delta, and Redding as used fuel
    Wobbe cannot be determined with available data.
  • Western Midway Sunset had events of reduced fuel
    heat content which caused significant increases
    in CO emissions, but did not significantly impact
    NOx emissions.
  • Study will go out for CEC management and data
    provider review later this week, and the Draft
    Study with excel raw data tables should be made
    public as early as late next week.
  • Additional work will be funded by the CEC to
    determine potential natural gas quality
    emissions/operations impacts to large power
    boilers. Scope of work should be completed by
    the end of this week and work should begin in
    approximately two weeks.

3
Sutter Natural Gas Fuel Heat Content and Wobbe
4
Sutter CT2 Uncontrolled NOx vs Wobbe
5
Sutter CT2 Ammonia Use vs Wobbe
6
Sutter CT2 Controlled NOx vs. Wobbe
  • Summary
  • Uncontrolled NOx 15 increase for 3.5 increase
    in Wobbe
  • Ammonia use 10 increase for 3.5 increase in
    Wobbe
  • Controlled NOx no increase

7
Western Midway Sunset CO Emissionsvs Fuel Heat
Content
8
Western Midway Sunset Description
  • Cogeneration 7E turbines with SCR and no CO
    catalyst 25 ppm CO permit limit.
  • No significant controlled NOx impacts (i.e.
    reduction) during heat content drop.
  • Expensive (250,000) burner modification fixed
    problem.
  • Subsequent burner modifications to second turbine
    affected earlier CO emissions fix.
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