Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Absorption of SO2 into Lime Slurries: Absorption Rates and Kinetics.
Author Vivia, Edward ;
CORP Author Massachusetts Inst. of Tech., Cambridge. Dept. of Chemical Engineering.
Year Published 1973
Report Number EPA-68-02-0018; EPA-ROAP-21ADE-21; 650/2-73-047;
Stock Number PB-230 936
Additional Subjects Sulfur dioxide ; Calcium oxides ; Absorption ; Reaction kinetics ; Reaction rates ; Slurries ; Hydrolysis ; Calcium oxides ; Solutions ; Water ; Calcium hydroxides ; Columns(Process engineering) ; Phase studies ; Interfaces ; Wet methods
Library Call Number Additional Info Location Last
NTIS  PB-230 936 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 62p
The report gives results of a study of the absorption of SO2 from an SO2/N2 gas mixture into water and lime solutions and slurries (in a short wetted wall column at approximately 1 atmosphere and 25C). The mole per cent of SO2 in the gas was varied from 0.03 to 0.37. In solutions of calcium hydroxide greater than 0.01 g mole/liter and in slurries, the system appeared to be gas absorption accompanied by an 'infinitely' rapid irreversible second-order reaction in the liquid phase. The only effect of the solid in the slurries was to increase the absorption capacity. In water, the system appeared to be gas absorption accompanied by a fast reversible hydrolysis reaction in the liquid phase. The major resistance to gas absorption at these concentration levels was found to be in the gas phase. At the lowest concentrations studied, the system was gas-phase controlled.