Removal of sulfur from carbonaceous fuel

Patent · Tue Mar 22 04:00:00 EST 1977

OSTI ID:7096877

Schroeder, W C

The sulfur content of solid carbonaceous material, such as coal or lignite, is reduced by feeding said material under recycle gas pressure into a continuous closed pressurized cyclic system operating in the range of about 5 to 30 atmospheres, contacting the coal in a desulfurization zone of the cyclic system with hot hydrogen-containing gases at about 1600/sup 0/F, removing the desulfurized coal from the resulting gas stream, removing sulfur compounds from the gas stream, and burning a part of the resulting gas stream to supply the hot hydrogen-containing gases for contacting the coal. Hydrogen necessary for the recycle gas stream is generated from the coal in the desulfurization zone. The only input to the system is coal and oxygen. Desulfurized coal, sulfur and excess gases are removed as products.

• Assignee: TIC; ERA-02-057848; EDB-77-136342
• Patent Number(s): US 4013426
• OSTI ID: 7096877
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010403 -- Coal & Coal Products-- Hydrogenation-- (-1987)
BROWN COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
CRYOGENIC FLUIDS
DESULFURIZATION
DIAGRAMS
ELEMENTS
ENERGY SOURCES
FLOWSHEETS
FLUIDS
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
LIGNITE
MEDIUM PRESSURE
NITROGEN
NONMETALS
OXYGEN
RECOVERY
REMOVAL
SULFIDES
SULFUR
SULFUR COMPOUNDS