Designing, installing and operating low NOx combustion systems in power plants

Conference · Mon Sep 01 04:00:00 EDT 1997

OSTI ID:514883

Lazzeri, L; Santis, R de ^[1]

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1. Ansaldo Energia, Genova (Italy)

Ansaldo Energia, in strict cooperation with the Italian Electricity Board (ENEL), has developed and implemented innovative technologies for in furnace NOx control which have been applied, both in italy and abroad, on over 20,000 MWe boilers of every kind (Tangentially Fired, Front Fired, Opposite Fired) and for different fuels like oil, gas, coal and ORIMULSION{reg_sign}. Taking advantage of innovative low NOx burners and of optimized air and fuel staging techniques NOx reductions up to 85% have been obtained with no significant impact on boiler efficiency. The paper describes: characteristics and industrial application of TEA{reg_sign} oil/gas LNB which is now capable of attaining NOx reductions up to 60% in respect to original circular burners; development and industrial applications of the TEA C{reg_sign} (oil/coal) LNB, capable of attaining NOx reductions up to 50% with contemporary control of unburned carbon levels (typical values less than 300 ppm NOx corrected to 6% O{sub 2} and less than 7% UBC); application of reburning oil over oil and gas over oil for both tangential and front-opposite fired boilers rated up 660 MWe; and information on the CEE THERMIE projects of gas over coal reburning in a 600 MWe Scottish Power boiler and oil over coal and coal over coal reburning in the ENEL plant of Vado Ligure unit 4, rated 320 MWe.

• OSTI ID: 514883
• Report Number(s): CONF-970456--
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
AIR POLLUTION ABATEMENT
BURNERS
COCOMBUSTION
COMBUSTION PRODUCTS
DESIGN
FOSSIL-FUEL POWER PLANTS
INSTALLATION
NITROGEN OXIDES
OPERATION
STAGED COMBUSTION