Chemistry of the molten carbonate process for SO/sub 2/ removal from stack gases

Conference · Thu Jan 01 04:00:00 EST 1976 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:7181295

Yosim, S J; Grantham, L F; McKenzie, D E; Stegmann, G C

The Molten Carbonate Process consists of three steps: the scrubbing of SO/sub 2/ by a ternary eutectic alkali metal carbonate melt; the reduction of the sulfite and sulfate reaction products with petroleum coke; and the reaction of the resulting sulfide with steam and CO/sub 2/ to regenerate the carbonate and to form H/sub 2/S, which in turn can be converted to elemental sulfur. The detailed chemistry of each of these steps will be discussed. The chemistry of the scrubbing step is complicated by side reactions of both oxidation and disproportionation of sulfite. The reactions in the reducer are straightforward involving carbon reacting directly with the sulfite and sulfate. The chemistry of the regeneration step includes a side reaction of CO/sub 2/ with the sulfide. The chemistry of several other aspects of this process are discussed including the process for recovering Li/sub 2/CO/sub 3/ from the fly ash-salt cake and the selection of corrosion-resistant materials of construction. Finally, a brief description of the pilot plant to be built at the Arthur Kill Power Station of Consolidated Edison Company is given.

• OSTI ID: 7181295
• Conference Information: Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 17:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
DIAGRAMS
ECONOMICS
ELEMENTS
FLOWSHEETS
FLUE GAS
FUNCTIONAL MODELS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
LITHIUM CARBONATES
LITHIUM COMPOUNDS
MOLTEN CARBONATE PROCESS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PILOT PLANTS
REDUCTION
REGENERATION
REMOVAL
SCRUBBING
SULFIDES
SULFITES
SULFUR
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES