Development and testing of regenerable hot-coal-gas desulfurization sorbents
Investigations over several years at the Morgantown Energy Technology Center have been concerned with the development of a regenerable metal oxide desulfurization sorbent which would function on hot coal-derived fuel gas. In the latest phase of testing, a combination of zinc oxide with iron oxide as zinc ferrite has produced a sorbent which has demonstrated regenerability and capability of removing sulfur from simulated hot coal gas to a level of 1 to 10 ppM by volume. The principal finding at this stage of the project is that the compound zinc ferrite and also iron oxide containing some zinc ferrite have hydrogen sulfide absorption performances very similar to those of zinc oxide. Extruded sorbents made from these compounds have been demonstrated to perform with varying ability in the temperature range 800/sup 0/F (427/sup 0/C) to 1400/sup 0/F (760/sup 0/C) at a space velocity of 2000 hourly and a hydrogen sulfide concentration of 2.7 percent. They have also been shown to be regenerable with a 50/50 percent v/v steam-air mixture at 1000/sup 0/F (538/sup 0/C) and 600 hourly space velocity with no loss of absorptive power. Both zinc ferrite and zinc oxide appear to perform optimally in the middle of the temperature range, where absorption capacity is greatest. Surprisingly, the experimental results indicate no trend to a lower degree of hydrogen sulfide removal with rise in temperature. Zinc ferrite appears to be superior to zinc oxide in terms of its absorption capacity and resistance to sintering at higher temperatures.
- Research Organization:
- Science Applications, Inc., Morgantown, WV (USA)
- DOE Contract Number:
- AC21-81MC16545
- OSTI ID:
- 5415894
- Report Number(s):
- DOE/MC/16545-1125; CONF-820610-3; ON: DE82011114
- Resource Relation:
- Conference: American Institute of Chemical Engineers' spring meeting, Anaheim, CA, USA, 8 Jun 1982; Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADSORBENTS
REGENERATION
FUEL GAS
DESULFURIZATION
HOT GAS CLEANUP
SPECIFICATIONS
IRON OXIDES
SORPTIVE PROPERTIES
ZINC OXIDES
COAL GASIFICATION
COMPUTERIZED SIMULATION
EXPERIMENTAL DATA
FERRITES
HYDROGEN SULFIDES
MOLTEN CARBONATE FUEL CELLS
OXIDES
SULFUR DIOXIDE
TEMPERATURE DEPENDENCE
ZINC COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
DIRECT ENERGY CONVERTERS
ELECTROCHEMICAL CELLS
FERRIMAGNETIC MATERIALS
FLUIDS
FUEL CELLS
FUELS
GAS FUELS
GASES
GASIFICATION
HIGH-TEMPERATURE FUEL CELLS
HYDROGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
MAGNETIC MATERIALS
MATERIALS
NUMERICAL DATA
OXYGEN COMPOUNDS
PURIFICATION
SIMULATION
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
010404* - Coal
Lignite
& Peat- Gasification