Significant parameters for the catalyzed gasification of coal chars. [With carbon dioxide and catalyst]
Technical Report
·
OSTI ID:5628803
The work on the parameters which most influence the catalyzed gasification of coal chars reveals some interesting trends, the generality of which we are currently exploring. At low loadings we have found that the catalyzed gasification reactions described show a strong dependence on charring temperature and catalyst loadings. However, based on the results with K/sub 2/CO/sub 3/, the effects of increased loadings can be mitigated by elevated temperature charring. Even at lower charring temperatures, certain catalysts experience a limiting level of activity beyond which increased loadings do not affect the gasification. The effects of alkali cation at low loadings (5 and 10%) are non-discriminatory. The role of the anion is less clear; for example, for potassium salts, Cl/sup -/ approx. SO/sub 4//sup 2 -/ = approx. HCO/sub 3//sup -/ approx. O/sub 2//sup -/, but these are considerably more effective than F/sup -/ and CO/sub 3//sup 2 -/. The mode of addition of catalyst is apparently not a factor. Thus, adding catalysts to the coal prior to charring yields similar results to those added subsequent to charring. Finally, we have not discovered any significant correlation of reactivity with surface areas and particle size.
- Research Organization:
- General Electric Co., Schenectady, NY (USA). Corporate Research and Development Dept.
- DOE Contract Number:
- AC21-80MC14591
- OSTI ID:
- 5628803
- Report Number(s):
- CONF-820304-1; ON: DE82000724
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALI METAL COMPOUNDS
ARRHENIUS EQUATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHARS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL GASIFICATION
DATA
DECOMPOSITION
EQUATIONS
EXPERIMENTAL DATA
GASIFICATION
GRAVIMETRIC ANALYSIS
HEATING RATE
INERT ATMOSPHERE
INFORMATION
KINETICS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
PYROLYSIS
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES
010404* -- Coal
Lignite
& Peat-- Gasification
ALKALI METAL COMPOUNDS
ARRHENIUS EQUATION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHARS
CHEMICAL ANALYSIS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL GASIFICATION
DATA
DECOMPOSITION
EQUATIONS
EXPERIMENTAL DATA
GASIFICATION
GRAVIMETRIC ANALYSIS
HEATING RATE
INERT ATMOSPHERE
INFORMATION
KINETICS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
PYROLYSIS
PYROLYSIS PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REACTION KINETICS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
THERMOCHEMICAL PROCESSES