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US 11,142,455 B2Granted
Pressurized catalytic production of dioxide species
AssigneeDripping Wet Water, Inc.
InventorsRichard Sampson, Allison Sampson, James Andrew Mialkowski, Mauricio Mata Nieto
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Abstract
A packed bed catalyst in a pressurized vessel/reactor during contact with a dioxide species precursor enhances catalytic conversion of the precursor to the dioxide species, compared with the same catalytic conversion performed in a non-pressurized vessel/reactor.
Claims9
A process for generating aqueous chlorine dioxide comprising the steps of:
- providing a pressurizable vessel holding a packed bed of porous, water-insoluble catalytic particles capable of converting chlorous acid and chloric acid to chlorine dioxide, said vessel having an inlet and an outlet;
- continuously or intermittently feeding an aqueous acid solution containing at least one of chlorous acid and chloric acid at a pH less than 4 through the vessel inlet into contact with the packed bed of porous, water-insoluble catalytic particles and continuously or intermittently pressurizing the packed bed when the packed bed is flooded with the aqueous acid solution to produce an aqueous chlorine dioxide solution;
- wherein the pressurizing is a separate step from the feeding step of the aqueous acid solution and
- continuously or intermittently removing said produced aqueous chlorine dioxide solution from the packed bed and the vessel through the vessel outlet.
1 more element
Dependencies are inferred from the claim text.