| Main Title |
Equilibrium Speciation of As, Cd, Cr, Hg, Ni, Pb, and Se in Oxidative Thermal Conversion of Coal. A Comparison of Thermodynamic Packages. |
| Author |
Frandsen, F. ;
Erickson, T. A. ;
Kuhnel, V. ;
Helble, J. J. ;
Linak, W. P. ;
|
| CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. National Risk Management Research Lab. ;Technical Univ. of Denmark, Lyngby. Dept. of Chemical Engineering. ;North Dakota Univ., Grand Forks. Energy and Environmental Research Center. ;Connecticut Univ., Storrs. Dept. of Chemical Engineering. |
| Publisher |
1996 |
| Year Published |
1996 |
| Report Number |
EPA/600/A-96/112; |
| Stock Number |
PB97-122642 |
| Additional Subjects |
Air pollution control ;
Coal ;
Thermodynamics ;
Combustion ;
Emission ;
Flue gases ;
Gas scrubbing ;
Stationary sources ;
Trace elements ;
Pressurized Fluidized-bed Combustion(PFBC)
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB97-122642 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
16p |
| Abstract |
The paper predicts the equilibrium speciation of the trace elements As, Cd, Cr, Hg, Ni, Pb, and Se in a model system, assuming ideal gas and pure condensed phases and taking into account the presence of a sorbent material for sulfur capture. The model system is based on a demonstration-scale pressurized fluidized-bed combustor, firing a Pittsburgh No. 8 bituminous coal, using dolomite as sorbent for sulfur capture and a ceramic filter for particulate removal. Results from four different thermodynamic packages (MINGYSYS, NASA-CET89, FACT, and SOLGASMIX) are compared over the temperature range 700-2000 K, at pressures of 1 and 20 atm. For As, Hg, and Se, almost identical equilibrium distributions were predicted by the four packages were observed. These differences may be due to different solution techniques, convergence criteria, and/or thermodynamic packages. |
| Supplementary Notes |
Presented at the International Symposium on Gas Cleaning at High Temperatures (3rd), Karlsruhe, Germany, September 18-20, 1996. Prepared in cooperation with Technical Univ. of Denmark, Lyngby. Dept. of Chemical Engineering., North Dakota Univ., Grand Forks. Energy and Environmental Research Center. and Connecticut Univ., Storrs. Dept. of Chemical Engineering. |
| NTIS Title Notes |
Rept. for Jun 95-Jun 96. |
| Category Codes |
68A |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/13 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
703402070 |
| Origin |
NTIS |
| Type |
CAT |
