OXYGEN LANCE/BOOST SYSTEMS

EMISSIONS CONTROL TECHNOLOGIES

Oxygen-Enriched Air Staging (OEAS)
  - Most advanced retrofit NO_x reduction process for regenerative glass furnaces
  - Creation of oxygen-deficient primary flame inhibits NO_x formation
  - Air or oxygen-enriched hot air is injected at strategic locations downstream to complete
    the combustion process
  - NO_x is reduced from 40 to 75
  - The process does not affect the furnace operation

Throughport Flat Flame Burner Firing
  - High flame coverage
  - Proprietary nozzle design
  - High flame luminosity improves heat transfer to glass
  - NO_x emissions 15 to 30% lower than conventional burner firing

Gas Reburn (GR)
  - Significant NO_x reduction
  - Retrofit technology uses all existing melter, port, and regenerator designs
  - Minimal impact on furnace operation

Oxygen Boosting
  - Preferred option to increase production capacity and reduce NO_x emissions
  - Furnace hot spot control is improved; shortens batch line distance
  - Glass quality as measured by seeds and stones is improved
  - NO_x emissions reduced by 15 to 30%
  - Overcomes production losses due to regenerator failure
  - Fuel savings due to oxygen use

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