Application of numerical modeling in a clean-coal demonstration project

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:7024368

Latham, C E ^[1]; Laursen, T A ^[2]; Bellanca, C; Duong, H ^[3]

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1. Babcock and Wilcox Co., Alliance, OH (United States). Research and Development Div.
2. Babcock and Wilcox Co., Barberton, OH (United States). Fossil Power Div.
3. Dayton Power and Light, Aberdeen, OH (United States)

Currently, utility boilers equipped with cell burners comprise 13% of pre-NSPS coal-fired generating capacity. The cell burner rapidly mixes the pulverized coal and combustion air resulting in rapid combustion and high NO[sub x] generation. A US Department of Energy (DOE) Clean-Coal Technology Demonstration project is underway at Dayton Power Light's J. M. Stuart Station to demonstrate the Low-NO[sub x] Cell[trademark] burner (LNCB[trademark]) on a 605-MWe utility boiler originally equipped with cell burners. The LNCB[trademark] is designed to reduce NO[sub x] emissions by delaying the mixing of the coal and the combustion air without boiler pressure part modifications. Preliminary post-retrofit testing results showed unexpectedly high carbon monoxide (CO) and hydrogen sulfide (H[sub 2]S) concentrations below the lowest burner row. The substoichiometric operation of the lowest burner row caused the relatively high concentrations in the lower furnace. Babcock Wilcox's flow, combustion, and heat transfer models were used to predict the CO concentrations in the lower furnace. The predictions were compared to field measurements for three different operating conditions. Based on this validation, the models were used to evaluate several methods for mitigating the CO concentrations. The results of this analysis are presented and discussed. The most attractive alternative was selected and will be implemented during the spring of 1992. The effectiveness of the new alternative will be available when the installation is complete and testing resumes.

• Research Organization: Babcock and Wilcox Co., Alliance, OH (United States). Research and Development Div.
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FC22-91PC90545
• OSTI ID: 7024368
• Report Number(s): CONF-921004-2; ON: DE92041197
• Resource Relation: Conference: International joint power generation conference, Atlanta, GA (United States), 18-22 Oct 1992
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
01 COAL, LIGNITE, AND PEAT
BOILERS
BURNERS
PERFORMANCE
DESIGN
RETROFITTING
CARBON MONOXIDE
MITIGATION
COAL
STAGED COMBUSTION
NITROGEN OXIDES
AIR POLLUTION ABATEMENT
HEAT TRANSFER
MATHEMATICAL MODELS
PULVERIZED FUELS
TURBULENT FLOW
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
ENERGY SOURCES
ENERGY TRANSFER
FLUID FLOW
FOSSIL FUELS
FUELS
MATERIALS
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
THERMOCHEMICAL PROCESSES
200104* - Fossil-Fueled Power Plants- Components
014000 - Coal
Lignite
& Peat- Combustion