Physical and numerical flow modeling of a coal reburning system for cyclone boiler NO sub x control

Technical Report · Fri Mar 01 04:00:00 EST 1991

OSTI ID:5567891

Wessel, R A; Kim, R K

A detailed evaluation of the furnace flow patterns and reburning system mixing performance is presented for the 110-MWe cyclone boiler at Nelson Dewey Station Unit No. 2 of the Wisconsin Power and Light (WP L) Company. Physical and numerical flow models were used to characterize flow patterns in the baseline configuration of the WP L unit furnace; field velocity measurements were used to benchmark the models. The models accurately simulate the major features of the flue gas flow patterns in the cyclone boiler. The physical and numerical flow models were used to simulate coal reburning conditions for the WP L unit boiler and to assist in the design of a reburning system for cyclone boiler NO{sub x} emissions control. The size, number, and location of reburning burners and overfire air (OFA) ports to control the mixing in the reburning and burnout zones were determined. Parametric evaluation of the reburning system operating conditions also demonstrated that sufficient flexibility is available to ensure that effective mixing can be achieved. Based on the flow modeling results, the fluid dynamic characteristics of the proposed coal reburning retrofit for the WP L Nelson Dewey Station Unit No. 2 will achieve the excepted performance conditions when the unit is operated and tested in the field. 6 refs., 47 figs., 9 tabs.

• Research Organization: Babcock and Wilcox Co., Alliance, OH (USA). Research Center
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FC22-90PC89659
• OSTI ID: 5567891
• Report Number(s): DOE/PC/89659-1; ON: DE91012854
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION CONTROL
BOILERS
BURNERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
CONTROL
CYCLONE COMBUSTORS
ENERGY SOURCES
FLUE GAS
FLUID FLOW
FOSSIL FUELS
FUELS
GAS FLOW
GASEOUS WASTES
MATERIALS
MATHEMATICAL MODELS
MIXING
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL
REDUCTION
RETROFITTING
SIMULATION
THERMOCHEMICAL PROCESSES
WASTES