IP Library › Granted Patent US 12662377
Granted Patent B2
US 12662377 · App. 17/475,859 · Granted Jun 23, 2026

Porous matrix substrate with chlorite reactant for producing chlorine dioxide

Inventors: James Campbell Wilkins (Midlothian, VA); Harold Russell Wilkins (Powhatan, VA); Mark J Puchovich (Henrico, VA); Megan Pettygrove (Glen Allen, VA); Benjamin Niemaseck (Chesterfield, VA)
Assignee: CHEMTREAT, INC.
C01B11/024C08L23/06C08L27/12C01B13/10
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Quick Facts
Patent No.
US 12662377
App. No.
17/475,859
Granted
Jun 23, 2026
Kind
B2
Abstract

A porous matrix substrate that has chlorite reactant distributed therein can be used to produce gaseous chlorine dioxide. Ozone-containing gas can pass through the porous matrix substrate and the ozone can react with the chlorite to produce chlorine dioxide.

Claims (16)

1 . A method of producing gaseous chlorine dioxide, the method comprising:

passing an ozone-containing gas through a solid porous matrix that includes chlorite reactant distributed therein, and

reacting the ozone in the ozone-containing gas with the chlorite reactant to produce the gaseous chlorine dioxide.

2 . The method of claim 1 , wherein the solid porous matrix is a porous polymer matrix.

3 . The method of claim 2 , wherein the porous polymer matrix includes polyethylene.

4 . The method of claim 2 , wherein the porous polymer matrix includes a fluoropolymer.

5 . The method of claim 1 , wherein the chlorite reactant comprises solid chlorite particles that are distributed in the solid porous matrix.

6 . The method of claim 5 , wherein the ozone-containing gas is contacted with the solid chlorite particles to react the ozone in the ozone-containing gas with the chlorite reactant.

7 . The method of claim 1 , wherein the solid porous matrix includes from 10 to 90% by weight of the chlorite reactant.

8 . The method of claim 1 , wherein the solid porous matrix has a porosity in a range of from 10% to 95%.

9 . A system for producing gaseous chlorine dioxide, the system comprising:

an ozone generator that is configured to produce an ozone-enriched gas; and

a reactor that includes a solid porous polymer matrix with chlorite reactant distributed therein, the reactor being configured to (i) receive the ozone-enriched gas from the ozone generator and (ii) exhaust a gas product including gaseous chlorine dioxide that is produced from reacting the chlorite reactant with ozone in the ozone-enriched gas.

10 . The system of claim 9 , wherein the chlorite reactant comprises solid chlorite particles that are distributed in the solid porous polymer matrix.

11 . The system of claim 10 , wherein the ozone-enriched gas is contacted with the solid chlorite particles to react the ozone in the ozone-containing gas with the chlorite reactant.

12 . The system of claim 9 , wherein the solid porous polymer matrix has a porosity in a range of from 10% to 95%.