CFB combustion of high-ash Ukrainian anthracite -- Pilot testing and design implications

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:357859

Belin, F; Fuller, T A; Maryamchik, M; Perna, M A ^[1]; Maystrenko, A Yu ^[2]

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1. Babcock and Wilcox, Barberton, OH (United States)
2. National Academy of Science, Kiev (Ukraine)

High-ash anthracite is the most important indigenous fuel used for power generation in Ukraine. The power plant upgrade program, developed jointly by US Department of Energy (DOE) and Ukrainian Ministry of Energy, anticipates applying the CFB technology for efficient and environmentally clean utilization of this hard-to-burn fuel. Testing of high-ash anthracite sponsored by DOE was conducted at CFB test facilities at the Division of High Temperature Energy Conversion (DHTEC) of Ukrainian Academy of Science in Kiev and at the Babcock and Wilcox Research Center in Alliance, Ohio, USA (ARC). Testing at DHTEC included kinetic studies and combustion tests on a small-scale (100 mm diameter) CFB combustor. The rest results were used to select the fuel sizing and limestone type for pilot testing at ARC and to evaluate the effects of operating parameters on fuel combustion. Testing at the ARC 2.5 MW{sub t} CFB pilot facility (700 x 700 mm cross section, 23 m high) provided combustion and emission performance data applicable for designing of commercial-scale CFB boilers. Stable combustion without supplemental fuel and with the unburned carbon loss of less than 3% was achieved over a 55 to 100% load range. About 90% of sulfur was removed by adding limestone at a Ca/S ratio of 1.85; nitrogen oxide and carbon monoxide emissions were below 340 mg/Nm{sup 3} and 260 mg/Nm{sup 3}, respectively. The CFB boiler design recommendations for high-ash anthracite, developed based on the test results, are described in the paper.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 357859
• Report Number(s): CONF-9705116--; ISBN 0-7918-1557-9
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
ANTHRACITE
DESIGN
FLUIDIZED BED BOILERS
FLUIDIZED-BED COMBUSTION
FOSSIL-FUEL POWER PLANTS
LIMESTONE
PERFORMANCE TESTING
SORBENT INJECTION PROCESSES
UKRAINE