Regeneration of sulfated limestone from FBCs. Quarterly report, April-June 1979

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/5562038· OSTI ID:5562038

Johnson, I.; Moulton, D. S.; Nunes, F. F.; Smyk, E. B.; Swift, W. M.; Teats, F. G.; Jonke, A. A.

These studies are concerned with the development of processes for the regeneration of sulfated limestone from fluidized-bed combustors. The results of cyclic combustion/regeneration experiments on two limestones are reported. In these studies the behavior of a low reactivity limestone, Germany Valley, during cyclic combustion/regeneration was studied; regeneration did not significantly change its reactivity. Studies of a high reactivity limestone, Greer, at lower (1050/sup 0/C vs 1100/sup 0/C) regeneration temperatures indicated an apparent improvement in performance. The mass and energy balance-constrained model for the continuous combustion-regeneration process was modified to allow more complete specification of the sorbent properties. The results of studies of a process for the recovery of elemental sulfur from SO/sub 2/ involving reaction with fly ash or coal ash-coal combinations are reported. The residual carbon in the fly ash was found to be an effective reductant for the SO/sub 2/ and high purity sulfur was obtained.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5562038
• Report Number(s): ANL/CEN/FE-79-9
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
ADSORBENTS
AIR POLLUTION ABATEMENT
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPARATIVE EVALUATIONS
ECONOMICS
ELEMENTS
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FOSSIL FUELS
FUELS
KINETICS
LIMESTONE
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
REACTION KINETICS
RECOVERY
REGENERATION
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES