OLS : Record


Main Title Absorption of SO2 by Alkaline Solutions in Venturi Scrubber Systems.
Author We, C. Y.; Uchid, S.;
CORP Author West Virginia Univ., Morgantown. Dept. of Chemical Engineering.
Year Published 1973
Report Number EPA-71-20, EPA-800781; 650/2-73-003;
Stock Number PB-224 202
Subjects ( Sulfur dioxide; Oxidation); ( Air pollution; Sulfur dioxide); Calcium carbonates; Washing; Momentum transfer; Mathematical models; Mass transfer; Heat transfer; Flue gases; Calcium oxides; Sodium hydroxide; Scrubbers; Reaction kinetics; Flow rate; Pressure; Scaling; Oxidation; Slurries; Alkalies; Venturi separators; Air pollution control; Chemical reaction mechanisms; Limestone scrubbing; Alkaline scrubbing; Wet methods
Library   Call Number Additional Info Location Date Modified
NTIS PB-224 202 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 170p
Abstract The report describes studies of SO2 absorption from flue gases by water and alkaline solutions in venturi scrubber processes, including recycle of the scrubbing liquor. It proposes mathematical models describing the process momentum, heat, and mass transfer for SO2-H2O, SO2-NaOH-H2O, SO2-CaO-H2O, and SO2-CaCO3-H2O systems. It generates equations relating total pressure, liquid velocity, SO2 concentration in the liquid. It solves these equations numerically for performance profiles, used to examine the effects of such operating variables as liquid flow rate and the concentration of alkali in the liquid phase on the absorption rate. It analyzes data from various size holding tanks and proposes mathematical models for the lime/limestone slurry process holding tanks. Finally, it combines these models to simulate the venturi/holding-tank system with closed-loop recycling of the liquor. It examines the sensitivities of such operating variables as the recycling liquor rate and the alkali makeup rate on the absorption. It qualitatively discusses such practical problems as oxidation of sulfite to sulfate and scaling of the solids. (Modified author abstract)
Highlights Notes Presents mathematical models for processes and reactions of flue gases.
NTIS Title Notes Final rept..
PUB Date Free Form Jul 73,
Category Codes 7A; 7D; 59B; 59G; 99B#; 99F; 68A
NTIS Prices PC A08/MF A01
Document Type NT
Control Number 326567558
Cataloging Source NTIS/MT
Origin NTIS
Type CAT