Title

Using Hydrogen Peroxide Or Ozone To Enhance The Incineration Of Volatile Organic Vapors

Abstract

The destruction of certain hazardous Volatile Organic Compounds (VOCs) by incineration requires high temperatures and long residence times. This oxidation process occurs by a complex series of chemical reactions, initiated and propagated by these reactive radicals: hydroxyl (OH), oxygen atoms (O), hydrogen atoms (H), and hydroperoxyl (HO2). It was postulated that the addition of radical sources, such as hydrogen peroxide (H2O2) or ozone (O3), to a heated stream of VOCs in air would enhance the kinetics of the thermal oxidation. In practice, addition of enhancers to post-flame gases in a real incinerator should result in lower incineration temperatures or shorter residence times to obtain the required destruction and removal efficiency (DRE). In this work, the VOCs studied include n-heptane, chlorobenzene, and isopropanol; less extensive experiments were also conducted on trichloroethylene and heptane/chlorobenzene mixtures. The reactor was a 200 cm long, 6 mm diameter quartz tube, and externally heated in a Lindberg tube furnace. The experiments were run isothermally for temperatures between 637C and 750C; residence times varied between 0.3 and 0.9 seconds and four to five different concentrations of H2O2 or O3. The results of these experiments show that the introduction of H2O2 clearly enhances the destruction of the VOCs tested. Ozone was found to be less versatile than hydrogen peroxide because it was effective in the incineration of the alkane but not on the other compounds. Full-scale testing of the technology using H2O2 was conducted in the present phase of the project with similar results. Detailed chemical kinetic models have been developed for the heptane and chlorobenzene cases.

Publication Date

1-1-1993

Publication Title

Waste Management

Volume

13

Issue

5-7

Number of Pages

521-

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/0956-053x(93)90098-h

Socpus ID

0027828957 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027828957

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