Effect of Calcination Conditions on the Physical Properties of Sorbents Used for Sulfur Dioxide Removal
Titel:
Effect of Calcination Conditions on the Physical Properties of Sorbents Used for Sulfur Dioxide Removal
Auteur:
ERSOY-MERigBOYU, AYSEGUL KUgtCUKBAYRAK, SADRIYE
Verschenen in:
Energy sources. Part A, Recovery utilization and environmental effects
Paginering:
Jaargang 17 (1995) nr. 6 pagina's 641-653
Jaar:
1995-11-01
Inhoud:
The effect of calcination conditions on the physical properties of calcines produced from natural Turkish limestones and dolomites was investigated. Calcination experiments were conducted in a tube furnace at temperatures of 1073, 1123, 1173, 1273, and 1373 K, Two different gaseous atmospheres were employed, namely, dry air (100 vol%) and a mixture consulting of CO2 (15 vol%%) and dry air (85 vol%). The physical properties, which involve bulk density (g/cm3), total pore volume (cm3/g), and the pore size distribution of the calcines prepared under different conditions, were determined using a mercury porosimeter, It was found that the physical properties of calcines were dramatically affected by the calcination conditions. At high calcination temperatures, because of sintering and shrinking effects, a decrease in porosity, an increase in bulk density and average pore radius were observed, in addition, the calcines prepared in a mixed atmosphere of dry air and carbon dioxide had larger pore sizes than those of calcines prepared in an atmosphere of dry air.
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