An Advanced Coal Gasification Desulfurization Process

Conference · Tue Aug 06 04:00:00 EDT 2002 · Proceedings of the 25th Intersociety Energy Conversion Engineering Conference

DOI:https://doi.org/10.1109/iecec.1990.716480· OSTI ID:6213640

Abbasian, Javad ^[1]; Rehmat, Amir ^[1]; Leppin, Dennis ^[2]; Banerjee, Daniel D. ^[3]

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1. Institute of Gas Technology, Chicago, IL (United States)
2. Gas Research Institute (GRI), Chicago, IL (United States)
3. Center for Research on Sulfur in Coal, IL (United States)

The Institute of Gas Technology (IGT) is in the process of developing an advanced coal gasification desulfurization process in which a calcium-based sorbent such as limestone or dolomite is injected into the fluidized-bed gasifier with coal to achieve in-bed desulfurization of coal as it is converted into clean fuel gas. The reactions involving calcium-based sorbents takes place in two steps. In the first step, the desulfurization reaction takes place between hydrogen sulfide and calcium oxide in the reducing zone of the reactor to produce calcium sulfide. The latter subsequently reacts with oxygen in the oxidizing zone of the reactor to produce calcium sulfate which can be safely disposed of along with the coal ash. This process will reduce the capital requirement for coal gasification plants and provide cost effective alternatives to scrubbers for industrial and utility use of high-sulfur coal. This paper addresses the basic research being conducted at IGT to confirm the viability of this process.

• Research Organization: Institute of Gas Technology, Chicago, IL (United States)
• Sponsoring Organization: USDOE; Gas Research Institute (GRI); Center for Research on Sulfur in Coal
• OSTI ID: 6213640
• Report Number(s): CONF-900801--41; ON: TI91008393; ISBN: 0-8169-0490-1
• Conference Information: Journal Name: Proceedings of the 25th Intersociety Energy Conversion Engineering Conference
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALINE EARTH METAL COMPOUNDS
BITUMINOUS COAL
BLACK COAL
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CALCIUM SULFATES
CALCIUM SULFIDES
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
DESULFURIZATION
DOLOMITE
ENERGY SOURCES
FLUIDIZED BEDS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IN-SITU GASIFICATION
IN-SITU PROCESSING
KINETICS
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATERIALS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
REACTION KINETICS
REDUCTION
ROCKS
SEDIMENTARY ROCKS
SORPTIVE PROPERTIES
SULFATES
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES