Tests to produce and recover carbon dioxide by burning coal in oxygen and recycled flue gas: Black Hills Power and Light Company Customer Service Center Boiler No. 2, Rapid City, South Dakota

Technical Report · Tue Dec 01 00:00:00 EST 1987

DOI:https://doi.org/10.2172/5500326· OSTI ID:5500326

Kumar, R; Fuller, T; Kocourek, R; Teats, G; Young, J; Myles, K; Wolsky, A

Experiments were conducted using a modified stoker-fired boiler (2.2 x 10/sup 6/ Btu/h) instrumented to examine the feasibility of producing and recovering carbon dioxide by burning coal in oxygen and recycled flue gas in a utility environment. The tests demonstrated that the boiler can be operated in the oxygen-blown/flue-gas-recirculation mode without any noticeable effects on coal combustion, heat delivery to the water, or the coal-feed or ash-handling systems. Pretest calculations showed that a feasible set of operating parameters for a carbon-dioxide-producing combustor system tightly sealed against air infiltration and containing no more than about 5% O/sub 2/ (dry basis) at the furnace exit would be a flue-gas recycling ratio between 0.6 and 0.7 and an oxygen feed rate of 1.17 g-moles per g-atom of carbon, yielding an exhaust gas composition (wet basis) of approximately 46.9% CO/sub 2/, 50.6% H/sub 2/O, and 2.5% O/sub 2/. This composition corresponds to a product gas containing 95% CO/sub 2/ and 5% O/sub 2/ (dry basis). However, because air leaked into the test combustor and the flue-gas handling system, the highest carbon dioxide concentration achieved in the exhaust gas was 48.5% (dry basis). Major sources of inleakage were the furnace brickwork, the gas-handling system, and the coal-feed and ash-extraction systems. 40 figs.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5500326
• Report Number(s): ANL/CNSV-61; ON: DE88005570
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
BOILERS
WASTE PRODUCT UTILIZATION
CARBON DIOXIDE
RECOVERY
USES
COAL
COMBUSTION
COMBUSTORS
EXHAUST GASES
FLUE GAS
GASEOUS WASTES
RECYCLING
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
MATERIALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
014000* - Coal
Lignite
& Peat- Combustion
200103 - Fossil-Fueled Power Plants- Waste-Fueled Systems