| Main Title |
High-Temperature, Short-Time Sulfation of Calcium-Based Sorbents. 1. Theoretical Sulfation Model. |
| Author |
Milne, C. R. ;
Silcox, G. D. ;
Pershing, D. W. ;
Kirchgessner, D. A. ;
|
| CORP Author |
Utah Univ., Salt Lake City. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
| Publisher |
c1990 |
| Year Published |
1990 |
| Report Number |
EPA-R811001; EPA/600/J-90/314; |
| Stock Number |
PB91-146688 |
| Additional Subjects |
Air pollution control ;
Sorbents ;
Injection ;
Sulfation ;
Mathematical models ;
Sulfur dioxide ;
Calcium carbonates ;
Calcium hydroxides ;
High temperature tests ;
Roasting ;
Diffusion ;
Area ;
Temperature ;
Partial pressure ;
Porosity ;
Reprints ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB91-146688 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
13p |
| Abstract |
The paper discusses a mathematical model for the sulfation of CaO, developed around the overlapping grain concept. The potential influence of high mass-transfer rates from simultaneous calcination of CaCO3 or Ca(OH)2 is incorporated in the mass-transfer coefficient for SO2 diffusion to the particle. A solution scheme for the nonlinear differential equation governing pore diffusion with changing particle structure is developed. The influence of grain overlap on product-layer diffusion is quantified. The model predictions show good agreement with published, fundamental differential reactor data which include the influences of surface area, temperature, and SO2 partial pressure. (Copyright (c) 1990 American Chemical Society.) |
