| Main Title |
Current Status of ADVACATE Process for Flue Gas Desulfurization (Journal Article). |
| Author |
Hall, B. W. ;
Singer, C. ;
Jozewicz, W. ;
Sedman, C. B. ;
Maxwell, M. A. ;
|
| CORP Author |
Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
| Publisher |
c1992 |
| Year Published |
1992 |
| Report Number |
EPA-68-DO-0141; EPA/600/J-92/047; |
| Stock Number |
PB92-150622 |
| Additional Subjects |
Air pollution control ;
Fly ash ;
Calcium silicates ;
Performance evaluation ;
Sorbents ;
Sulfur dioxide ;
Pilot plants ;
Bench-scale experiments ;
Calcium hydroxides ;
Injection ;
Reprints ;
Flue gas desulfurization ;
ADVACATE process ;
Waste utilization
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-150622 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
10p |
| Abstract |
The paper discusses current bench- and pilot-plant advances in preparation of ADVAnced siliCATE (ADVACATE) calcium silicate sorbents for flue gas desulfurization. It also discusses current bench- and pilot-plant advances in sorbent preparation. Fly ash was ground in a laboratory-scale grinder prior to slurrying in order to decrease the slurrying time needed for the sorbent to be reactive with SO2. Reactivity of ADVACATE sorbents with SO2 in the bench-scale reactor correlated with their surface area. ADVACATE sorbents produced with ground fly ash were evaluated in the 1.42 cu m/min pilot plant, providing 2 s duct residence time. ADVACATE sorbent was produced by slurrying ground fly ash (4.3 micrometer median particle size) with Ca(OH)2 at a weight ratio of 3:1 at 90 C for 3 h to yield solids with 30 wt % of initial free moisture. When the sorbent was injected into the duct with 1500 ppm SO2 and at 11 C approach to saturation, the measured SO2 removal was about 60% at a Ca/S stoichiometric ratio of 2.0. Previously, when ADVACATE sorbent was produced at 90 C and at the same fly-ash-to-Ca(OH)2 weight ratio using unground fly ash, removal under the same conditions in the duct was about 50% following 12 h slurrying. The report gives results of pilot-scale recycle tests at the recycle ratio of 2.0. Finally, the report discusses EPA's plans to commercialize ADVACATE. |
| Supplementary Notes |
Pub. in Jnl. of Air and Waste Management Association, v42 n1 p103-110 Jan 92. See also PB89-208920, PB89-214134 and PB91-226423. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
| NTIS Title Notes |
Rept. for Sep 90-Mar 91. |
| Title Annotations |
Reprint: Current Status of ADVACATE Process for Flue Gas Desulfurization (Journal Article). |
| Category Codes |
68A; 68C |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/13 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
211522752 |
| Origin |
NTIS |
| Type |
CAT |
