Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Evaluation of NOx Emission Control Catalysts for Power Plant SCR Installations.
Author Buzanowski, M. A. ; Jozewicz, W. ; Rakes, S. L. ;
CORP Author Acurex Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 1991
Year Published 1991
Report Number EPA-68-D0-0141; EPA/600/D-91/261;
Stock Number PB92-121276
Additional Subjects Air pollution control ; Electric power plants ; Nitrogen oxides ; Fossil-fuel power plants ; Catalysts ; Sulfur dioxide ; Dust ; Emission ; Stationary sources ;
Library Call Number Additional Info Location Last
NTIS  PB92-121276 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/24/1992
Collation 13p
The paper gives results of an evaluation of nitrogen oxide (NOx) emission control catalysts commercially developed for power plant selective catalytic reduction (SCR) installations. With the objective of establishing the performance of SCR catalysts and related technology, control at the 85% removal level was achieved with sulfur dioxide (SO2) present. In the absence of SO2 and under optimum conditions, greater than 99% removal was possible. (Ammonia slip was not measured.) Several SCR catalysts were tested under different operating conditions. The effects of NH3/NO ratio (0.1/1.0), space velocity (3,000 - 8,000 h to the -1 at STP), and temperature (270 - 400 C) on reaction kinetics are reported. The target NO concentrations were 500 and 1000 ppm. Particular emphasis was on investigating the poisoning effects of SO2 on the SCR catalysts due to the significant sulfur content in U.S. coals. It was confirmed that, while SO2 may exhibit poisonous effects on some catalysts, the commercial catalysts designed for the high- and low-dust SCR installations show high resistance to SO2 poisoning.