title: Mercury oxidation in flue gas using gold and palladium catalysts on fabric filters.
abstract: The feasibility of oxidizing elemental mercury in coal combustion flue gas using catalytic material impregnated onto fabric filters was explored. TiO2, Au/TiO2, and Pd/Al2O3 were studied based on promising results in previous research. Several fabric coating methods were investigated to determine the best way to load a filter. A spray coat method was found to have the highest initial loading and had the lowest losses after simulated pulse-jet cleaning. The oxidation performance of the catalyst-coated filters was tested using a simulated flue gas in a bench-scale reactor under conditions similar to those found in a baghouse. Au/TiO2 and Pd/Al2O3 were effective, yielding mercury oxidation ranges of 40-60% and 50-80%, respectively. A 19 kW research combustor equipped with a baghouse was used to fire a range of coals and further test the performance of Pd/Al2O3. Results obtained warrant further development of this technique as a means of mercury pollution control.
authors.affiliation: Department of Chemical Engineering, University of North Dakota, 241 Centennial Drive, Stop 7101, Grand Forks, North Dakota 58202-7101, USA.
authors.forename: Jason A
authors.initials: JA
authors.lastname: Hrdlicka
authors.forename: Wayne S
authors.initials: WS
authors.lastname: Seames
authors.forename: Michael D
authors.initials: MD
authors.lastname: Mann
authors.forename: Darrin S
authors.initials: DS
authors.lastname: Muggli
authors.forename: Carol A
authors.initials: CA
authors.lastname: Horabik
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*
chemical_list: D010165:Palladium; D006046:Gold; D008628:Mercury