Abstract
For realizing the environmental issues and constituting an economical treatment system, a catalytic filter based on V2O5/TiO2 supported on tubular filter elements has many advantages by removing NOx and particulate simultaneously from flue gas. In order to improve the activity of a catalytic filter based on V2O5/TiO2 supported on a commercial high temperature filter element (PRD-66), the promoting effects of WO3 were investigated in an experimental unit. PRD-66 presented very good properties for SCR catalyst carrier since it contains much active material such as A12O3 SiO{om2}, and MgO whose contributions were remarkable. For additional catalyst carrier, TiO2 particles were coated in the pores of PRD-66 with relatively good distribution of the particle size less than 1 μm, by a coating process applying centrifugal force. WO3, in the V2O5-WO3-TiO2/PRD-66 catalytic filter system, increased the SCR activity significantly and broadened the optimum temperature window. The catalytic filter shows the maximum NO conversion of more than 95% for NO concentration of 700 ppmv at face velocity of 0.02 m/sec, which is comparable to the current commercial catalytic filters of plate form.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
AlliedSignal, “Preliminary Engineering Data,” AlliedSignal Composites Inc., P.O.Box 9559, Newark, DE 19714-9559 (1999).
Amiridis, M. D., Wachs, I. E. and Jehng, J. M., “Reactivity of the V2O5 Catalysts for the Selective Catalytic Reduction of NO by NH3,”J. Catal.,161, 247 (1996).
Alemany, L. J., Berti, F., Busca, G., Ramis, G., Robba, D., Toledo, G. P. and Trombetta, M., “Characterization and Composition of Commercial V2O5-WO3-TiO2 SCR Catalysts,”Applied Catalysis B: Environmental,10, 299 (1996).
Alemany, L. J., Lietti, L., Ferlazzo, N., Forzatti, P., Busca, G., Giamello, E. and Bregani, F., “Reactivity and Physicochemical Characterization of V2O5-WO/TiO2 De-NO{nix} Catalysts,”J. of Catalysis,155, 117 (1995).
Bosch, H. and Janssen, F., “Catalytic Reduction of Nitrogen Oxides. A Review on the Fundamentals and Technology,”Catalysis Today,2, 369 (1988).
Chae, H. J., Nam, I. S., Yang, H. S., Song, S. L. and Hur, I. D., “Selective Catalytic Reduction of NOx, by NH3 over V2O5/Ti-PILC Catalyst,”HWAHAK KONGHAK,38, 783 (2000).
Choi, E., Lee, J. K., Park, D. and Park, W. H., “Removal of SOx and NOx, from Hue Gas with Ceria,”Korean J. Chem. Eng.,11, 25 (1994).
Choi, J. H. and Ahn, G. H., “Preparation of Catalytic Filter for the Simultaneous Treatment of NOx, and Particulate,” The 4th Intern. Symposium on Coal Combustion, Beijing, 197 (1999a).
Choi, J. H., Ahn, G. H. and Kim, S. S., “The Characteristics of NO Reduction over V2O5/TiO2 Catalyst attached on Ceramic Filters,”J. of Korean Society of Environ. Eng.,21(10), 1861 (1999b).
Choi, J. H., Keum, S. M. and Chung, J. D., “Operation of Ceramic Candle Filter at High Temperature for PFBC Application,”Korean J. Chem. Eng.,16, 823 (1999c).
Choi, J. H., Kim, S. K., Ha, S. J. and Park, Y. O., “The Supporting of V2O5/TiO2 Catalyst on the Ceramic Filter Candle for Selective Reduction of NO,” International Symposium on Chemical Engineering, Feb. 8–10, Cheju Island, Korea, 234 (2001).
Choung, J. W., Choi, K. H., Seong, H J., Chai, H J. and Nam, I. S., “The Effect of HCl Gas on Selective Catalytic Reduction of Nitrogen Oxide,”J. of KSEE,22(4), 609 (2000).
Forzatti, P. and Lietti, L., “Recent Advances in De-NOx, ing Catalysis for Stationary Applications,”Heterog. Chem. Rev.,3(1), 33 (1996).
Gennrich, T. J., “Filter Bags Help Meet Particulate Control Standards,” Power Engineering, 1 (1993).
Ham, S. W., Nam, I. S. and Kim, Y. G., “Activity and Durability of Iron-exchanged Mordenite-type Zeolite Catalyst for the Reduction of No by NH3,”Korean J. Chem. Eng.,17, 318 (2000).
Kudlac, G. A., Farthing, G. A., Szymanski, T. and Gortbett, R., “SNBR Catalytic Baghouse Laboratory Pilot Testing,”Environmental Progress,11(1), 33 (1992).
Nam, I. S., “A Catalytic Process for the Reduction of NOx from Stationary Sources,”Catalysis,11(1), 5 (1995).
Parvulescu, V. I., Grange, P. and Delmon, B., “Catalytic Removal of NO,”Catalysis Today,46, 233 (1998).
Saracco, G. and Montanaro, L., “Catalytic ceramic Filter for Flue Gas Cleaning. 1. Preparation and Characterization,”Ind. Eng. Chem. Res.,34, 1471 (1995).
Shin, B. S., Lim, S. Y. and Choung, S. J., “WO3 and MoO3 Addition Effect on V2O5/TiO2 as Promoters for Removal of NOx, and SOx, from Stationary Sources,”Korean J. Chem. Eng.,11, 254 (1994).
Sohn, J. R. and Bae, J. H., “Characterization of Tungsten Oxide Supported on TiO2 and Activity for Acid Catalysis,”Korean J. Chem. Eng.,17, 86 (2000).
Terabe, K., Kato, K., Miyazaki, H., Yamaguchi, S. and Imai, A.,J. Mater. Sci.,29, 1617 (1994).
Topaøe, N.-Y., Topsøe, H. and Dumesic, J. A., “Vanadia/Titania Catalysts for Selective Catalytic Reduction (SCR) of Nitric Oxide by Ammonia,”J. Catalysis,151, 226 (1995).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Choi, JH., Kim, SK. & Bak, YC. The reactivity of V2O5-WO3-TiO2 catalyst supported on a ceramic filter candle for selective reduction of NO. Korean J. Chem. Eng. 18, 719–724 (2001). https://doi.org/10.1007/BF02706392
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02706392