| Main Title |
Survey of Coals Treated by Oxydesulfurization. |
| Author |
Warzinski, R. P. ;
Ruether, J. A. ;
Friedman, S. ;
Steffgen, F. W. ;
|
| CORP Author |
Department of Energy, Pittsburgh, PA. Pittsburgh Energy Technology Center.;Department of Energy, Washington, DC. |
| Year Published |
1979 |
| Report Number |
EPA-600/7-79-098b-V.2 ;CONF-7809119-3; |
| Stock Number |
DE83007323 |
| Additional Subjects |
Pittsburgh oxydesulfurization process ;
Coal ;
Coal preparation ;
Feasibility studies ;
Autoclaves ;
Temperature dependence ;
Organic sulfur compounds ;
Air ;
Water ;
Pressure dependence ;
Pyrite ;
Oxidation ;
Heat losses ;
Time dependence ;
Chemical reactions ;
Comparative evaluations ;
Sulfur content ;
Sulfur ;
Chemical state ;
Ashes ;
Calorific value ;
Coal rank ;
Correlations ;
Chemical reactors ;
Flowsheets ;
Experimental data ;
ERDA/013000 ;
ERDA/010600
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
DE83007323 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
24p |
| Abstract |
The feasibility of using only compressed air and water at elevated temperature to reduce the sulfur content of coal has been demonstrated in autoclave experimentation at the Pittsburgh Energy Technology Center for various coals from most of the major coal basins in the United States. This air/water oxydesulfurization consistently removes in excess of 90 percent of the pyritic sulfur and has the potential for reducing the organic sulfur content by up to 40 percent. The sulfur liberated from coal by this reaction is present in the aqueous effluent as dilute sulfuric acid which can be neutralized with limestone. Under certain reaction conditions pyrite forms a jarosite intermediate which reports as organic sulfur in chemical analysis. Extent of organic sulfur removal and loss of heating value increase with temperature in the range 170 exp 0 -200 exp 0 C. (ERA citation 08:022992) |
