Desulfurization sorbent regeneration

Patent · Wed Jul 07 00:00:00 EDT 1982

OSTI ID:6213172

Jalan, V M; Frost, D G

A spent solid sorbent resulting from the removal of hydrogen sulfide from a fuel gas flow is regenerated with a steam-air mixture. The mixture of steam and air may also include additional nitrogen or carbon dioxide. The gas mixture contacts the spent sorbent containing metal sulfide at a temperature above 500/sup 0/C to regenerate the sulfide to metal oxide or carbonate. Various metal species including the period four transition metals and the lanthanides are suitable sorbents that may be regenerated by this method. In addition, the introduction of carbon dioxide gas permits carbonates such as those of strontium, barium and calcium to be regenerated. The steam permits regeneration of spent sorbent without formation of metal sulfate. Moreover, the regeneration will proceed with low oxygen concentrations and will occur without the increase in temperature to minimize the risk of sintering and densification of the sorbent. This method may be used for high-temperature fuel cells.

• DOE Contract Number: W-31-109-ENG-38
• Assignee: EDB-83-111304
• Application Number: ON: DE83013200
• OSTI ID: 6213172
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
01 COAL, LIGNITE, AND PEAT
ADSORBENTS
REGENERATION
FUEL GAS
DESULFURIZATION
HIGH-TEMPERATURE FUEL CELLS
FUEL SYSTEMS
NATURAL GAS
PRODUCER GAS
CARBON DIOXIDE
HYDROGEN SULFIDES
RARE EARTHS
STEAM
TRANSITION ELEMENTS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL CELLS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
LOW BTU GAS
METALS
OXIDES
OXYGEN COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
300503* - Fuel Cells- Materials
Components
& Auxiliaries
010402 - Coal
Lignite
& Peat- Purification & Upgrading