Development program on pressurized fluidized-bed combustion. Annual report, July 1, 1974--June 30, 1975

Technical Report · Tue Jul 01 00:00:00 EDT 1975

DOI:https://doi.org/10.2172/5003652· OSTI ID:5003652

Vogel, G. J.; Cunningham, P.; Fischer, J.

The feasibility of using fluidized-bed combustors in power and steam plants is being evaluated. The concept involves burning fuels such as coal in a fluidized bed of either a naturally occurring, calcium-containing limestone or dolomite or in a synthetically prepared calcium-containing stone. The calcium oxide in the stone reacts with the sulfur released during combustion to form calcium sulfate, which remains in the bed, thus decreasing the level of SO/sub 2/ in the flue gas. Levels of NO/sub x/ in the flue gas are also low. The effect of operating variables and type of stone on the levels of SO/sub 2/ and NO/sub x/ is being determined. Behavior of trace elements during combustion has been preliminarily evaluated. The properties of a fluidized bed at minimum fluidization at different temperatures and pressures have been determined. The CaSO/sub 4/ produced in the combustion process is regenerated to CaO for reuse in the combustor by reductive decomposition at 1095/sup 0/C (2000/sup 0/F). The effects of operating variables on sulfur release during regeneration are being evaluated. Another regeneration process, solid-solid reaction of CaSO/sub 4/ with CaS, is also being investigated. Fundamental investigations of the kinetics of sulfation and regeneration reactions for the natural and synthetic stones are continuing. A model for the sulfation reaction is presented. The status of the new combustor andancillary regenerator equipment is discussed. (auth)

• Research Organization: Argonne National Lab., Ill. (USA)
• DOE Contract Number: 14-32-0001-1780
• OSTI ID: 5003652
• Report Number(s): ANL/ES-CEN-1011
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CALCIUM OXIDES
CHEMICAL REACTIONS
COAL
FLUIDIZED-BED COMBUSTION
FLUE GAS
DENITRIFICATION
DESULFURIZATION
NITROGEN OXIDES
REMOVAL
SULFUR DIOXIDE
BIBLIOGRAPHIES
DOLOMITE
FOSSIL-FUEL POWER PLANTS
LIMESTONE
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CARBONATES
CHALCOGENIDES
COMBUSTION
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASEOUS WASTES
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POWER PLANTS
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SULFUR COMPOUNDS
SULFUR OXIDES
THERMAL POWER PLANTS
WASTES
014000* - Coal
Lignite
& Peat- Combustion
010800 - Coal
Lignite
& Peat- Waste Management