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Feasibility Test of a Low Emissions Topping Combustor for Fluidized Bed Applications PUBLIC ACCESS

[+] Author Affiliations
Paul W. Pillsbury, Richard V. Garland

Westinghouse Combustion Turbine Operations, Orlando, FL

Paper No. 87-GT-272, pp. V003T06A033; 8 pages
doi:10.1115/87-GT-272
From:
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7925-2
  • Copyright © 1987 by ASME

abstract

Combined cycles utilizing fluidized bed combustors, whether they be atmospheric or pressurized, are temperature limited. In order to capture sulfur effectively, bed operating temperature and, therefore, the gas turbine inlet temperature is limited to about 1600°F (1144 K) (Makanski and Schweiger, 1982) in atmospheric beds, and about 1700°F (1200 K) in pressurized beds as reported in DOE/METC/SP-185 (1980). In some applications, material limitations also come into play. While these systems show encouraging economics, they can be enhanced substantially by increasing the turbine inlet temperature. An atmospheric fluidized bed (AFB) example is discussed in this paper.

The addition of a topping combustor, thereby increasing the turbine inlet temperature in fluidized bed combined cycles, provides the means for increasing power output which enhances plant economics. Although emissions control and maintaining acceptable wall temperatures are achieved through the application of the multi-annular swirl burner, the design of such a combustor requires careful consideration of cooling and combustion because of the inherently higher cooling air and combustion air temperatures.

Copyright © 1987 by ASME
This article is only available in the PDF format.

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