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RECORD NUMBER: 37 OF 100

OLS Field Name OLS Field Data
Main Title Evaluation of FGD (Flue Gas Desulfurization) Dry Injection Sorbents and Additives. Volume 2. Pilot Plant Evaluation of High Reactivity Sorbents.
Author Chang, J. C. S. ; Jorgensen, C. ;
CORP Author Acurex Corp., Research Triangle Park, NC. Environmental Systems Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher May 89
Year Published 1989
Report Number EPA-68-02-3988; EPA/600/7-89/006B;
Stock Number PB89-214134
Additional Subjects Desulfurization ; Pilot plants ; Spray drying ; Sorbents ; Flue gases ; Sulfur dioxide ; Calcium oxides ; Injection ; Silicon dioxide ; Fly ash ; Diatomaceous earth ; Air pollution ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB89-214134 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 12/18/1989
Collation 92p
Abstract
The report describes a mini-pilot test program to investigate potential new sorbents and processes for dry SO2 removal. Initial tests showed that the 85 cu m/h pilot plant could be used successfully to evaluate both spray dryer and dry injection processes using traditional calcium or sodium based sorbents. The major part of the test program investigated the use of flyash or diatomaceous earth for enhancement of lime with respect to SO2 removal in a dry injection process. This part of the test program verified the silica enhancement of Ca(OH)2 which previously had been extensively studied on a bench-scale reactor. The pilot program showed that 50-90% SO2 removal can be achieved for a stoichiometric ratio of 1 to 2 by dry injection of the silica enhanced lime when using a duct + baghouse configuration, or when using a duct + cyclone configuration including recycle. The sorbent preparation procedure was developed throughout the test program, and an important result was that the silica enhanced lime can be prepared as a semidry sorbent containing 20-30% moisture, suitable for duct injection. Evaporative cooling of the flue gas is allowed as a result of the sorbent injection, thereby lowering the approach to saturation and increasing the SO2 removal.