Comparative study of the reactions of metal oxides with H{sub 2}S and SO{sub 2}
Conference
·
OSTI ID:10120767
Primary objective was to investigate the effects of pore structure on capacity of porous metal oxides for removal of SO{sub 2} from power plant fuel gas and H{sub 2}S from hot coal gas. During this period, a comparative study was carried out on the direct reaction with H{sub 2}S and SO{sub 2} of the three limestones used as CaO precursors: Greer limestone, Georgia marble, and Iceland spar calcite. Sulfation was carried out at 750 and 850 C in a thermogravimetric analysis system under simulated high pressure (enough CO{sub 2} to prevent decomposition of CaCO{sub 3}). Results are presented as conversion vs time graphs. Mercury penetration and gas adsorption were used to analyze the structure. Activation energies and effective diffusivities were determined. A variable diffusivity shrinking-core model was used to analyze the data. In the future, this limestone study will be completed, and a study on supported CuO sorbent will be started.
- Research Organization:
- Rochester Univ., NY (United States). Dept. of Chemical Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90301
- OSTI ID:
- 10120767
- Report Number(s):
- DOE/PC/90301--93/C0140; CONF-921034--28; ON: DE93005904
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800
20 FOSSIL-FUELED POWER PLANTS
200202
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
54 ENVIRONMENTAL SCIENCES
540120
ACTIVATION ENERGY
CALCITE
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHEMICALS MONITORING AND TRANSPORT
DIFFUSION
HYDROGEN SULFIDES
LIMESTONE
MARBLE
NOXIOUS GAS AND PARTICULATE EMISSIONS
PARTICLES
POROSITY
SULFATION
SULFUR DIOXIDE
TEMPERATURE RANGE 1000-4000 K
THERMAL GRAVIMETRIC ANALYSIS
WASTE MANAGEMENT
010800
20 FOSSIL-FUELED POWER PLANTS
200202
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201
54 ENVIRONMENTAL SCIENCES
540120
ACTIVATION ENERGY
CALCITE
CHEMICAL AND PHYSICOCHEMICAL PROPERTIES
CHEMICAL REACTIONS
CHEMICALS MONITORING AND TRANSPORT
DIFFUSION
HYDROGEN SULFIDES
LIMESTONE
MARBLE
NOXIOUS GAS AND PARTICULATE EMISSIONS
PARTICLES
POROSITY
SULFATION
SULFUR DIOXIDE
TEMPERATURE RANGE 1000-4000 K
THERMAL GRAVIMETRIC ANALYSIS
WASTE MANAGEMENT