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US 7,112,309 B2Granted
Method and apparatus for use of reacted hydrogen peroxide compounds in industrial process waters
AssigneeSteen Research, LLC
InventorsMichael J. Stoltz, Stephen R. Temple
Life of this patent
Estimating the term…
Abstract
Methods and apparatus are described which utilize an aqueous hydrogen peroxide composition of hydrogen peroxide and at least one additive which serves to catalyze the rapid decomposition of the hydrogen peroxide into hydroxyl radicals. When contacted with an atmospheric effluent containing odor and/or noxious components, the hydroxyl radicals formed oxidize the odor and noxious components to non-odor offensive, environmentally acceptable by-product.
Claims26
A system for scrubbing gaseous effluent, the system comprising:
- (a) a packed column comprising (i) a gaseous effluent inlet, (ii) a packing region for housing packing for contacting the gaseous effluent with an aqueous hydrogen peroxide composition, and (iii) a gaseous effluent outlet that directs said gaseous effluent out of said packed column after it has contacted said aqueous hydrogen peroxide composition in said packing region;
- (b) a fluid line in fluid communication with said packed column and arranged with respect to said packed column to remove said aqueous hydrogen peroxide composition from said packed column after it has contacted said gaseous effluent and introduce said aqueous hydrogen peroxide composition into said packing region;
- (c) a source of hydrogen peroxide arranged to provide said hydrogen peroxide to said fluid line;
- and
- (d) a source of at least one additive arranged to provide said at least one additive directly to said fluid line whereby said at least one additive mixes with said hydrogen peroxide in said fluid line to decompose said hydrogen peroxide to predominantly hydroxyl free radicals and thereby produce said aqueous hydrogen peroxide composition.
2 more elements
A system for removing an odorous or noxious component from a gaseous stream, comprising:
- a gas/liquid contactor configured to contact a gaseous stream comprising an odorous or noxious component with a liquid, said gas/liquid contactor comprising a gas inlet, a gas outlet, a liquid inlet and a liquid outlet;
- a tank in fluid communication with said gas/liquid contactor and configured to hold said liquid and to receive said liquid from said liquid outlet;
- a fluid line configured to pass said liquid from said tank to said liquid inlet;
- a first container in fluid communication with said fluid line, wherein said first container comprises hydrogen peroxide;
- and
- a second container in direct fluid communication with said fluid line, wherein said second container comprises an additive that catalyzes the decomposition of hydrogen peroxide.
3 more elements
A system for removing an odorous or noxious component from a gaseous stream, comprising:
- a gas/liquid contactor configured to contact a gaseous stream comprising an odorous or noxious component with a liquid, said gas/liquid contactor comprising a gas inlet, a gas outlet, a liquid inlet and a liquid outlet;
- a tank in fluid communication with said gas/liquid contactor and configured to hold said liquid and to receive said liquid from said liquid outlet;
- a fluid line configured to pass said liquid from said tank to said liquid inlet;
- a pump connected to said fluid line;
- a first container in direct fluid communication with said fluid line at a location upstream of said pump, wherein said first container comprises hydrogen peroxide;
- a second container in direct fluid communication with said fluid line at a location downstream of said pump, wherein said second container comprises an additive that catalyzes the decomposition of hydrogen peroxide to predominantly hydroxyl free radicals;
- a pH probe configured to measure the pH of said liquid within said fluid line;
- a third container in direct fluid communication with said fluid line, wherein said third container comprises a pH control additive;
- and
- a pH controller electrically connected to said pH probe and configured to control the rate of addition of said pH control additive from said third container to said fluid line.
7 more elements
Dependencies are inferred from the claim text.