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

Patent · Tue Apr 05 00:00:00 EDT 1988

OSTI ID:6444452

Grindley, T.

A process and apparatus for providing additional desulfurization of the hot gas produced in a fluid-bed coal gasifier, within the gasifier is described. 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 to 1800 F and are partially quenched with water to 1000 to 1200 F before entering the iron oxide bed. The iron oxide bed provides additional desulfurization beyond that provided by the lime /limestone. 1 fig.

• Research Organization: USDOE Morgantown Energy Technology Center (METC), WV (United States)
• Assignee: US Dept. of Energy
• Patent Number(s): PATENTS-US-A7177310
• Application Number: ON: DE89010096
• OSTI ID: 6444452
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION
HOT GAS CLEANUP
IRON OXIDES
SORPTIVE PROPERTIES
LIMESTONE
ABSORPTION
COOLING
DESIGN
DESULFURIZATION
HYDROGEN SULFIDES
POLLUTION CONTROL
WATER
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
GASIFICATION
HYDROGEN COMPOUNDS
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
ROCKS
SEDIMENTARY ROCKS
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010404* - Coal
Lignite
& Peat- Gasification
010800 - Coal
Lignite
& Peat- Waste Management