Topping combustor status for second-generation pressurized fluidized bed cycle application

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2815558· OSTI ID:483747

Domeracki, W F; Dowdy, T E ^[1]; Bachovchin, D M ^[2]

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1. Westinghouse Electric Corp., Orlando, FL (United States). Power Generation Business Unit
2. Westinghouse Electric Corp., Pittsburgh, PA (United States). Science and Technology Center

Second-generation Pressurized Fluidized (PFB) combined cycle employ topping combustion to raise the turbine inlet temperature for enhanced cycle efficiency. This concept creates special combustion system requirements that are very different from requirements of conventional gas turbine systems. The topping combustor provides the means for achieving state-of-the-art turbine inlet temperatures and is the main contributor to enhanced plant performance. The objective of this program is to develop a topping combustor that provides low emissions, and is a durable, efficient device exhibiting stable combustion and manageable wall temperature. The combustor will be required to burn a low-Btu syngas under normal coal-fired conditions. However, for start-up and/or carbonizer outage, it may be necessary to fire a clean fuel, such as oil or natural gas. Prior testing has shown the Westinghouse Multi-Annular Swirl Burner (MASB) to have excellent potential for this application. Metal wall temperatures can be maintained at acceptable levels, even though most cooling is done by 1,600 F vitiated air. Good pattern factors and combustion efficiencies have been obtained. Additionally, low conversion rates of fuel bound nitrogen to NO{sub x} have been demonstrated. This paper presents an update of the status of an ongoing topping combustor development and test program for application to Second-Generation Pressurized Fluidized Bed Combined Cycles (PFBCC). The program is sponsored by the Department of Energy`s Morgantown Energy Technology Center (DOE/METC) and will first be applied commercially into the Clean Coal Technology Round V Four Rivers Energy Modernization Project. Phase 1 of the program involved a conceptual and economic study (Robertson et al., 1988); Phase 2 addresses design and subscale testing of components; and Phase 3 will cover pilot plant testing of components integrated into one system.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 483747
• Report Number(s): CONF-950629--
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 1 Vol. 119; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
COAL GASIFICATION
COMBINED-CYCLE POWER PLANTS
FLUIDIZED BED BOILERS
GAS TURBINES
PRESSURIZATION
TOPPING CYCLES