Reactions of calcium-based sorbents with sulfur in coal during gasification

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:7177153

Rehmat, A; Abbasian, M J; Leppin, D; Banerjee, D D

This status report outlines the results obtained to date of the current research program supported jointly by the Gas Research Institute and the State of Illinois Center for Research on Sulfur in Coal. The overall objective is to obtain data related to the efficient utilization of high-sulfur Illinois coal in a One-Step Desulfurization Process by employing in-situ removal of sulfur using calcium-based sorbents. The project includes a study of fluidization behavior of coal char/sorbent mixtures and the reactions of calcium-based sorbents with sulfur present in the coal during gasification. The tests are conducted in bench-scale units; an 8-inch fluidization column is utilized for fluidization tests, and a thermobalance reactor is used for gas-solid reactions. The test parameters include the choice of sorbent, sorbent size, the effect of temperature on sulfation and sulfidation reactions, the effect of the steam-to-hydrogen sulfide ratio on the sulfidation reaction, the effect of the steam on the sulfation reaction, and the influence of exposure time on sulfation of the presulfided sorbent. The reaction conditions for these reactions have been chosen to be directly applicable to scale-up of the One-Step Desulfurization Process. 7 refs., 9 figs., 11 tabs.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• OSTI ID: 7177153
• Report Number(s): CONF-8707195-1; ON: DE88017149
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BENCH-SCALE EXPERIMENTS
CALCIUM
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATE MINERALS
CARBONATE ROCKS
CARBONATES
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
DESULFURIZATION
DOLOMITE
ELEMENTS
ENERGY SOURCES
FLUIDIZATION
FOSSIL FUELS
FUELS
GASIFICATION
LIMESTONE
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATERIALS
METALS
MINERALS
NONMETALS
OXYGEN COMPOUNDS
REMOVAL
RESEARCH PROGRAMS
ROCKS
SEDIMENTARY ROCKS
SORPTION
SORPTIVE PROPERTIES
SULFUR
SULFUR CONTENT
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES