Investigation on durability and reactivity of promising metal oxide sorbents during sulfidation and regeneration. Quarterly report, April 1--June 30, 1996
Hot-gas desulfurization for the integrated gasification combined cycle (IGCC) process has been investigated by many researchers to remove effectively hydrogen sulfide with various metal oxide sorbents at high pressures and high temperatures. Metal oxides such as zinc titanate oxides, zinc ferrite oxide, copper oxide, manganese oxide and calcium oxide, were found to be promising sorbents in comparison with other removal methods such as membrane separations and reactive membrane separations. Some metal oxide sorbents exhibited the quite favorable performance in terms of attrition resistance and sulfur capacity. Removal reaction of H{sub 2}S from coal gas mixtures with promising sorbents of fine solid was carried on in a batch reactor. The objectives of this research project are to formulate promising durable metal oxide sorbents for the removal of sulfur compounds from coal gas mixtures, to find intrinsic initial reaction kinetics for a sorbent-hydrogen sulfide heterogeneous reaction system, to obtain effects of concentrations of coal gas components such as hydrogen and moisture on equilibrium absorption as well as dynamic absorption of hydrogen sulfide into formulated sorbents for the reaction system at various reaction temperatures and pressures, and to obtain effects of concentrations of coal gas components such as hydrogen and moisture on reaction rates of hydrogen sulfide with formulated sorbents at various reaction temperatures and pressures.
- Research Organization:
- Tuskegee Univ., AL (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
- DOE Contract Number:
- FG21-94MC31206
- OSTI ID:
- 465320
- Report Number(s):
- DOE/MC/31206--5362; ON: DE97051713
- Country of Publication:
- United States
- Language:
- English
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