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Journal of Automated Methods and Management in Chemistry
Volume 2008 (2008), Article ID 759141, 7 pages
http://dx.doi.org/10.1155/2008/759141
Research Article

Effect of Process Parameters on Catalytic Incineration of Solvent Emissions

1Department of Process and Environmental Engineering, Faculty of Technology, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
2Department of Technology, Central Ostrobothnia University of Applied Sciences, Talonpojankatu 2, 67100 Kokkola, Finland
3Department of Chemistry, Faculty of Science, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland

Received 8 January 2008; Accepted 29 April 2008

Academic Editor: Peter Stockwell

Copyright © 2008 Satu Ojala et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Catalytic oxidation is a feasible and affordable technology for solvent emission abatement. However, finding optimal operation conditions is important, since they are strongly dependent on the application area of VOC incineration. This paper presents the results of the laboratory experiments concerning four most central parameters, that is, effects of concentration, gas hourly space velocity (GHSV), temperature, and moisture on the oxidation of n-butyl acetate. Both fresh and industrially aged commercial Pt/ A l 2 O 3 catalysts were tested to determine optimal process conditions and the significance order and level of selected parameters. The effects of these parameters were evaluated by computer-aided statistical experimental design. According to the results, GHSV was the most dominant parameter in the oxidation of n-butyl acetate. Decreasing GHSV and increasing temperature increased the conversion of n-butyl acetate. The interaction effect of GHSV and temperature was more significant than the effect of concentration. Both of these affected the reaction by increasing the conversion of n-butyl acetate. Moisture had only a minor decreasing effect on the conversion, but it also decreased slightly the formation of by products. Ageing did not change the significance order of the above-mentioned parameters, however, the effects of individual parameters increased slightly as a function of ageing.