||Absorption of sulfur dioxide in spray column and turbulent contacting absorbers /
Wen, Chin-yung, ;
Wen, C. Y. ;
Fan., L. S.
||West Virginia Univ., Morgantown. Dept. of Civil Engineering.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
|| U.S. Environmental Protection Agency, Office of Research and Development ; National Technical Information Service,
||EPA-600/2-75-023; EPA-R-800781; EPA-ROAP-21ACY-041
Sulfur dioxide ;
Sulfur dioxide ;
Air pollution control ;
Flue gases ;
Calcium oxides ;
Magnesium oxide ;
Mass transfer ;
Reaction kinetics ;
Liquid phases ;
Gas scrubbing ;
Air pollution control equipment ;
Spray tower scrubbers ;
Wet methods ;
||Research Triangle Park Library/RTP, NC
||Some EPA libraries have a fiche copy filed under the call number shown.
||vii, 105 p. : ill. ; 28 cm.
The report gives results of an analysis of experimental data, from both small and large scale turbulent contacting absorbers (TCA) and spray columns used in the wet scrubbing of SO2 from flue gases, to obtain gas film mass transfer coefficients and overall coefficients in the liquid film which includes chemical reaction in the liquid film. Recycled limestone, limestone-magnesium oxide, and lime scrubbing slurries were investigated. Gas film coefficients for the spray and TCA scrubbers were calculated from data on SO2 scrubbing with sodium carbonate solutions. Overall mass transfer resistances in the liquid phase were correlated for both scrubbers in terms of the ratio of the gas film and liquid film mass transfer resistances. The ratio of the resistances was found to be a function of only the scrubber type, inlet SO2 partial pressure in the gas phase, slurry pH, and magnesium concentration of the scrubbing slurry. Specifically, it was found that the ratio of the gas and liquid film mass transfer resistances (or the fraction to which SO2 removal is gas film controlled) increases with increasing slurry pH and magnesium concentration and decreasing SO2 partial pressure. Correlations for the gas film mass transfer coefficient and the ratio of mass transfer resistances are shown to predict fairly accurately the experimentally observed SO2 removal efficiencies.
"EPA-600/2-75-023." "August 1975." "PB 247 334." Final report. Sponsored by the EPA, Office of Research and Development. Includes bibliographical references (p. 94-98).