Development of durable mixed-metal oxide sorbents for high-temperature desulfurization of coal gases in moving-bed reactors

Conference · Tue Jun 01 00:00:00 EDT 1993

OSTI ID:10161162

Ayala, R E ^[1]; Jain, S C ^[2]

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1. General Electric Co., Schenectady, NY (United States). Corporate Research and Development Center
2. USDOE Morgantown Energy Technology Center, WV (United States)

Mixed-metal oxide sorbents, particularly zinc ferrite and zinc titanate, are being developed for use in hot gas cleanup of coal gas in the integrated gasification combined-cycle (IGCC). For the case of moving-bed systems, the pelletized sorbent moves between the absorber and regenerator as it absorbs H{sub 2}S from coal gas and is regenerated under diluted air. Therefore a mechanically strong and chemically active sorbent is necessary for proper long-term operation of the system. These desired properties depend on the active components in the sorbent, the type and concentration of the binder material, and the sorbent preparation procedure. In the current program, several zinc titanate sorbent formulations have been prepared using a new rounding fabrication procedure, and varying the types of additives/binders (e.g., bentonite and molybdenum) and calcination temperature (1450-1800 {degree}F, 788-982 {degree}C). Comparison with baseline cylindrical formulations was made by measuring attrition resistance, crush strength, thermogravimetric reactivity and bench-scale reactor performance.

• Research Organization: USDOE Morgantown Energy Technology Center, WV (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC21-88MC25003
• OSTI ID: 10161162
• Report Number(s): DOE/METC/C-93/7080; CONF-921104-14; ON: DE93015665
• Resource Relation: Conference: American Institute of Chemical Engineers annual meeting,Miami, FL (United States),1-6 Nov 1992; Other Information: PBD: [1993]
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
54 ENVIRONMENTAL SCIENCES
ZINC COMPOUNDS
SORPTIVE PROPERTIES
IRON COMPOUNDS
TITANATES
COAL GAS
DESULFURIZATION
HOT GAS CLEANUP
COMBINED CYCLES
COMBINED-CYCLE POWER PLANTS
COAL GASIFICATION
ADDITIVES
BINDERS
CHEMICAL REACTORS
HYDROGEN SULFIDES
010402
200102
200202
540120
PURIFICATION AND UPGRADING
POWER CYCLES
NOXIOUS GAS AND PARTICULATE EMISSIONS
CHEMICALS MONITORING AND TRANSPORT