Method and apparatus for enhancing the desulfurization of hot coal gas in a fluid-bed coal gasifier
Patent
·
OSTI ID:6444452
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, WV
- Assignee:
- US Dept. of Energy
- Patent Number(s):
- PATENTS-US-A7177310
- Application Number:
- ON: DE89010096
- OSTI ID:
- 6444452
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010800 -- Coal
Lignite
& Peat-- Waste Management
ABSORPTION
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
CONTROL
COOLING
DESIGN
DESULFURIZATION
GASIFICATION
HOT GAS CLEANUP
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON COMPOUNDS
IRON OXIDES
LIMESTONE
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PURIFICATION
ROCKS
SEDIMENTARY ROCKS
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WATER
010404* -- Coal
Lignite
& Peat-- Gasification
010800 -- Coal
Lignite
& Peat-- Waste Management
ABSORPTION
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
CONTROL
COOLING
DESIGN
DESULFURIZATION
GASIFICATION
HOT GAS CLEANUP
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON COMPOUNDS
IRON OXIDES
LIMESTONE
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PURIFICATION
ROCKS
SEDIMENTARY ROCKS
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
WATER