Actions for Coal reburning for cyclone boiler NO{sub x} control demonstration. Quarterly report No. 9, April, May, and June 1992 [electronic resource].

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Coal reburning for cyclone boiler NO{sub x} control demonstration. Quarterly report No. 9, April, May, and June 1992 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
21 pages : digital, PDF file
Additional Creators
Babcock & Wilcox Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The Coal Reburning for cyclone Boiler No. Control Demonstration project progress for April, May, and June 1992 is identified in this ninth quarterly report and pertains to the on-going activities of Phase III -- Construction and Start-up and Phase III -- Operation and Disposition. The project involves retrofitting/testing the reburning technology at Wisconsin Power & Light`s 100 MWe Nelson Dewey Unit No. 2 in Cassville, Wisconsin to determine the commercial applicability of this technology to reduce NOₓ emission levels. Under Phase IIB additional tuning of the control system was completed and operation in the full automatic mode was carried out in May, 1992 in anticipation of long-term testing. Phase IIB was complete at that point. Phase III activities emphasized completion of parametric optimization testing to characterize the reburn system. As of May 21, 1992, long-term testing with WP&L operating the reburn system in full automatic in a load following mode, was under way. Preliminary results indicate that No. emissions reductions of 50% and greater have been achieved as a result of reburn operation at full load. Furnace exit gas temperature has been reduced by 150°F as a result of reburn operation, again at full load. This effect is less significant at lower loads. No adverse impact on slagging and fouling has been observed and precipitator performance remains essentially unchanged. Unburned carbon on ash losses appear to have increased during reburn operation. Preliminarily at full load, boiler thermal efficiency is reduced because of higher unburned carbon by between 0.3% and 0.7% in the worst case. Efficiency losses appear to be higher at low loads. This effect will be further quantified with long-term performance test data to be taken in September, 1992.
Report Numbers
E 1.99:doe/pc/89659--t10
doe/pc/89659--t10
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/01/1992.
"doe/pc/89659--t10"
"DE93004941"
Type of Report and Period Covered Note
Quarterly; 04/01/1992 - 06/30/1992
Funding Information
FC22-90PC89659
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