Applications of Low-Temperature Regenerative Thermal Oxidizers to Treat Volatile Organic Compounds
Publication: Journal of Environmental Engineering
Volume 128, Issue 4
Abstract
A series of plant scale low temperature regenerative thermal oxidizers (LTRTOs) equipped with heating wires were constructed to treat volatile organic compounds (VOCs) laden gas streams. All regenerative beds were packed with gravel (approximate particle size 1.25 cm, specific area 205 m2/m3, and specific heat capacity 840 J/kg °C) and equipped with K-type thermocouples for measuring gas temperatures. Test gas streams were extracted from manufacturing sections of varnishing, semiconductor packing, and petrochemical plants, representing a variety of gas-phase pollutants, including several commercial solvents. Experimental results indicate that 98% or greater treatment of VOCs with concentrations between 100 and 7,000 ppm as methane. Analysis of gas temperature variation with time at various bed depths confirm that VOC degradation occurs at temperatures ranging from 300 to 440°C, which are much lower than autoignition points of tested compounds. A 1.0 s gas residence time in the oxidation zone of regenerative beds is required for successful LTRTO operation.
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References
Brooks, J.(1994). “Help in controlling VOCs in the painting-finishing industry.” Plant. Surf. Finish., 81(11).
Chou, M. S., Cheng, W. H., and Lee, W. S.(2000). “Performance characteristics of a regenerative catalytic oxidizer for treating VOC-contained air streams.” J. Air Waste Manag. Assoc. 50(12), 2112–2119.
Church, F. L.(1989). “Deodorant for a container firm: Regenerative oxidation.” Modern Metals, 9, 76–80.
Klobucar, J. M. (1997). “Development and testing of an RTO system for control of plywood veneer dryer air emissions.” Proc., Air and Waste Management Association, 90th Annual Meeting and Exhibition, Toronto.
Lewandowski, D. A. (1999). Design of Thermal oxidation system for volatile organic compounds, Lewis.
Nester, J. L., and Uphues, R.(1997). “Regenerative thermal oxidizer upgrades allow coil coater to increase production and maintain regulatory compliance.” Met. Finish., 1, 46–48.
Nevers, N. D. (2000). Air pollution control engineering, McGraw-Hill, New York.
Pennington, R. L.(1990). “Regenerative thermal oxidation destroys VOCs and saves energy.” Industrial Finish., 3.
Perry, R. H., and Green, D. W. (1997). Perry’s chemical engineers’ handbook, 7th Ed., McGraw-Hill, New York.
Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 128 • Issue 4 • April 2002
Pages: 313 - 319
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Dec 11, 2000
Accepted: Jul 25, 2001
Published online: Apr 1, 2002
Published in print: Apr 2002
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