Method for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier

Patent · Tue May 23 00:00:00 EDT 1989

OSTI ID:5849553

Grindley, T

A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier. A fluid-bed of iron oxide is located inside the gasifier above the gasification bed in a fluid-bed coal gasifier in which in-bed desulfurization by lime/limestone takes place. The product gases leave the gasification bed typically at 1600/sup 0/ to 1800/sup 0/F. and are particularly quenched with water to 1000/sup 0/ to 1200/sup 0/F. before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime/limestone.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4832704
• OSTI ID: 5849553
• Resource Relation: Patent File Date: Filed date 5 Apr 1988
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GAS
DESULFURIZATION
COAL GASIFICATION PLANTS
TECHNOLOGY ASSESSMENT
FLUIDIZED BEDS
HIGH TEMPERATURE
IRON OXIDES
LIME-LIMESTONE WET SCRUBBING PROCESSES
CHALCOGENIDES
CHEMICAL REACTIONS
FLUIDS
GASES
INDUSTRIAL PLANTS
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SCRUBBING
TRANSITION ELEMENT COMPOUNDS
010404* - Coal
Lignite
& Peat- Gasification
010800 - Coal
Lignite
& Peat- Waste Management