Chemical desulfurization of coal to meet pollution control standards. [5 refs. ; only pyritic S removed]

Conference · Tue Jan 01 04:00:00 EST 1974 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:7348626

Hamersma, J W; Kraft, M L; Kendrick, W P; Meyers, R A

The Meyers' Process is a new approach for the desulfurization of coal which chemically removes pyritic sulfur from coal with ferric sulfate (Eq. 1): FeS/sub 2/ + 4.6Fe/sub 2/(SO/sub 4/)/sub 3/ + 4.8H/sub 2/O = 10.2FeSO/sub 4/ + 4.8H/sub 2/SO/sub 4/ + 0.8S. The leaching agent is regenerated using air or oxygen (Eq. 2): 2.4 O/sub 2/ + 9.6 SO/sub 4/ + 4.8 H/sub 2/SO/sub 4/ = 4.8 Fe/sub 2/(SO/sub 4/)/sub 3/ + 4.8 H/sub 2/O, and sulfur and iron sulfates are removed as reaction products. Although only pyritic sulfur is removed (organic bound sulfur remains), the process has wide applicability for converting U.S. coal reserves to a sulfur level consistent with government standards for sulfur emissions from power plants and industrial sources. Samples from coal mines in Montana, through Illinois, Ohio, Pennsylvania, West Virginia, and Kentucky, representing a wide range of U.S. production and reserves have been desulfurized to meet these standards utilizing the Meyers' Process. Physical cleaning techniques have generally been unable to accomplish similar sulfur reductions for the coals tested without severe coal reject losses. Because of the relatively high pyritic sulfur content of Appalachian coals (70 percent of current U.S. coal production), the process appears to have major impact in this area.

• Research Organization: TRW Inc., Redondo Beach, CA
• OSTI ID: 7348626
• Conference Information: Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 19:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
AIR
AIR POLLUTION
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
CONTROL
CRYOGENIC FLUIDS
DESULFURIZATION
DISSOLUTION
ELEMENTS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
FLUIDS
FOSSIL FUELS
FUELS
GASES
IRON COMPOUNDS
IRON SULFATES
IRON SULFIDES
LEACHING
MEYERS PROCESS
MINERALS
NONMETALS
ORES
OXYGEN
OXYGEN COMPOUNDS
POLLUTION
PYRITE
PYRITES
REMOVAL
SEPARATION PROCESSES
STANDARDS
SULFATES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS