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US 7,678,353 B2Granted
Process for scrubbing alkyl halides from gases
AssigneeValue Recovery, Inc.
InventorsPeter J. Joyce, Roman Bielski
Life of this patent
Estimating the term…
Abstract
Alkyl halides can be effectively scrubbed from gas streams containing them by passing the gas streams through dispersers having a very small pore size into an aqueous scrubbing liquid containing a nucleophile such as thiosulfate. Optionally, the addition of a water-soluble organic compound to the scrubbing liquid may increase the rate of destruction of the alkyl halide. Alkyl halides such as methyl bromide can be effectively scrubbed from enclosed spaces containing the halide, for example in enclosures used for fumigation.
Claims19
A method of removing an alkyl halide from a gas volume, the method comprising:
- withdrawing a gas stream from the gas volume;
- passing the gas stream through one or more gas dispersers having therein a plurality of holes, the holes being between 1 and 200 μm across at a widest part thereof, thereby producing gas bubbles;
- and passing the bubbles through a single continuous liquid phase contained in a reaction vessel, the liquid phase comprising water and a nucleophile, to produce a purified gas stream.
Dependencies are inferred from the claim text.