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Fuel Flexibility for Minimum Cost Generation
- Add Gas-Firing Capability to Tangential-Fired and Wall-Fired
Boilers
- Retain Major Burner Components
- Low NOx Emissions
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200 Mbtu/hr dual-register oil burner
retrofitted with new gas spuds, flame stabilizer, V-Jet oil atomizer,
and CTL Class 1 gas igniter.
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Modify Existing Oil or Coal Burners to Add Gas-Firing Capability at
a Fraction of the Cost of New Burners
Conversion of a 550 MW
Oil-Fired Boiler Demonstrates Typical Results
- 28 Burners Upgraded with Natural Gas and
LN-REACH Oil Combustion Equipment.
- Retained Full Load Capability without
Convective Pass Modifications.
- NOx Emissions of < 0.16 lb/Mbtu on
Natural Gas with 15% OFA and 9% FGR (Baseline NOx = 0.6 lb/Mbtu).
- NOx Emissions of < 0.25 LB/Mbtu on Oil
with 15% OFA and 8% FGR (Baseline NOx = 0.55 LB/Mbtu, Fuel
Nitrogen = 0.28%).
- Opacity < 10% Over the Load Range on
Oil.
- CO Emissions < 100 ppm Throughout the
Load Range.
- Stable, Well-Anchored Flames Under All Conditions.
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Typical wall-fired burner retrofit: The primary elements consist of the
gas manifold, pokers with spuds, flame stabilizer, oil gun retract, and
gas igniter. Also shown here are sliding sleeve air registers for a dual-register
burner to facilitate automated control of the combustion airflow, independent
of swirl.
Coen's Performance and Environmental Services Approach
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Coen's Performance and Environmental Services Scope
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- Define project objectives with the
customer, including load, fuels, and emissions guarantee levels.
- Conceptual and detailed engineering of
combustion equipment modifications to retain major components
wherever possible.
- Integrate new combustion equipment with
existing or new fuel supply systems, combustion controls and
burner management systems (BMS).
- Results: significant savings in cost and unit down time compared
to full burner replacement.
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Project manager and prime contractor for all
combustion equipment.
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Engineering of the combustion equipment, including
new hardware and modifications to existing burners.
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Fabrication and supply of all combustion hardware.
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Supply of additional hardware and control elements
as required for combustion air automation, flame detection,
fuel control, oil gun retracts, and igniters.
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Supervision of installation.
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Commissioning of new equipment.
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For more information about these products and services, talk to your
nearest Coen Sales Representative.
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