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- W1556572962 abstract "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 selectedmore » 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.« less" @default.
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- W1556572962 date "1992-11-01" @default.
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- W1556572962 title "Application of numerical modeling in a clean-coal demonstration project" @default.
- W1556572962 hasPublicationYear "1992" @default.
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