Comparative study of the reactions of metal oxides with H[sub 2]S and SO[sub 2]
Conference
·
OSTI ID:7001087
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:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90301
- OSTI ID:
- 7001087
- Report Number(s):
- DOE/PC/90301-93/C0140; CONF-921034--28; ON: DE93005904
- Country of Publication:
- United States
- Language:
- English
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· Industrial and Engineering Chemistry Research; (United States)
·
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ACTIVATION ENERGY
CALCITE
CARBONATE MINERALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DIFFUSION
ENERGY
GRAVIMETRIC ANALYSIS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
LIMESTONE
MARBLE
METAMORPHIC ROCKS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POROSITY
QUANTITATIVE CHEMICAL ANALYSIS
ROCKS
SEDIMENTARY ROCKS
SULFATION
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ACTIVATION ENERGY
CALCITE
CARBONATE MINERALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DIFFUSION
ENERGY
GRAVIMETRIC ANALYSIS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
LIMESTONE
MARBLE
METAMORPHIC ROCKS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POROSITY
QUANTITATIVE CHEMICAL ANALYSIS
ROCKS
SEDIMENTARY ROCKS
SULFATION
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS