Process for the degradation of highly toxic halogenated organic compounds contained in gases
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United States of America Patent
Stats
-
Oct 31, 1995
Grant Date -
N/A
app pub date -
Feb 18, 1994
filing date -
Feb 20, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a process for the degradation of highly toxic halogenated organic compounds, in particular polychlorinated dibenzodioxins (PCDD) and dibenzofurans (PCDF), contained in gases containing no SO.sub.2 by oxidation using preferably hydrogen peroxide. The SO.sub.2 -free gas is passed, in the presence of hydrogen peroxide, over a substantially inorganic solid contact catalyst, in particular pyrogenic or precipitated silica or aluminum silicate. A residual PCDD/PCDF content of below 0.1 ng TE/Nm.sup.3 may be achieved in the thus treated gas; the highly toxic compounds are oxidized on the solid contact catalyst.
First Claim
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