| Main Title |
Pilot Testing of Sodium Thiosulfate. |
| Author |
Chang, J. C. S. ;
Brna, T. G. ;
|
| CORP Author |
Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
| Year Published |
1986 |
| Report Number |
EPA-68-02-3648; EPA/600/J-86/275; |
| Stock Number |
PB87-167706 |
| Additional Subjects |
Sodium thiosulfates ;
Air pollution control ;
Flue gases ;
Desulfurization ;
Concentration(Composition) ;
Pilot plants ;
Sulfur dioxide ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-167706 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
11p |
| Abstract |
The article gives results of pilot plant tests to evaluate sodium thiosulfate as an oxidation inhibition additive in five lime/limestone slurry flue gas desulfurization processes. It was found that the oxidation rate of absorbed SO2 was reduced by more than 50% in the presence of 100-200 ppm of thiosulfate ion in the scrubbing slurry. Calcium sulfate dihydrate (gypsum) scaling was eliminated and the unsaturated (with respect to gypsum) operation mode was maintained by the addition of sodium thiosulfate. Other benefits of sodium thiosulfate addition observed at the pilot plant included improvement in solids dewatering properties for limestone processes and improvement in SO2 removal efficiency for magnesium-enhanced lime/limestone processes. |
