Regeneration of sulfated limestone from FBCs. Quarterly report, October--December 1978

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

DOI:https://doi.org/10.2172/6217895· OSTI ID:6217895

Johnson, I.; Swift, W. M.; Snyder, R. B.; Lenc, J. F.; Moulton, D. S.; Nunes, F. F.; Smith, G. W.; Smyk, E. B.; 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 (FBC) and with the evaluation of corrosion when limestone sorbents treated with various salts (to increase their SO/sub 2/ reactivity) are used in FBCs. The results of a cyclic combustion (sulfation)--regeneration study of Germany Valley limestone are reported. A thermodynamic analysis was made of the reductive decomposition regeneration process to examine the interrelationship of: SO/sub 2/ concentration in the off-gas, temperature, pressure, oxidizing/reducing conditions, coal/sorbent ratio, feed gas oxygen concentration, and sorbent composition. A literature review was made on processes for the conversion of SO/sub 2/ to elemental sulfur. Operational characteristics are reported for a process development-scale atmospheric fluidized-bed combustor which has been put into use for corrosion studies, and the exposure conditions for the first three 100-h corrosion runs are reported. Limestone used in these runs included untreated limestone and limestone treated with 0.3 mol % CaCl/sub 2/ or 0.5 mol % NaCl.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6217895
• Report Number(s): ANL/CEN/FE-79-2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
ADDITIVES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BURNERS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COAL
COMBUSTION
COMBUSTORS
CORROSION
CORROSIVE EFFECTS
ELEMENTS
ENERGY SOURCES
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
LIMESTONE
NONMETALS
OXIDATION
RECOVERY
REDUCING AGENTS
REGENERATION
RESERVOIR ROCK
ROCKS
SEDIMENTARY ROCKS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SULFUR
THERMOCHEMICAL PROCESSES