IP Library › Granted Patent US 12692228
Granted Patent B2
US 12692228 · App. 17/301,329 · Granted Jul 28, 2026

Method for quenching peroxycarboxylic acid runaway reactions

Inventors: David Andrew Mack (Saint Paul, MN); David D. McSherry (Saint Paul, MN); John W. Bolduc (Saint Paul, MN); Curtis Edward Finney (Saint Paul, MN); Corey Rosenthal (Saint Paul, MN); Junzhong Li (Saint Paul, MN)
Assignee: ECOLAB USA INC.
C07C407/006B01J19/002B65D88/54B65D90/22C01B15/037C07B63/04B01J2219/00259B01J2219/00272
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Quick Facts
Patent No.
US 12692228
App. No.
17/301,329
Granted
Jul 28, 2026
Kind
B2
Abstract

Systems for quenching peroxycarboxylic acid and peroxide chemistry runaway reactions provide safe and efficacious systems to prevent uncontrolled runaway reactions, such as decomposition reactions, of peroxycarboxylic acid and peroxide chemistry compositions are disclosed. The systems provide prompt detection and dispensing of a stabilizer into a tank or other storage vessel containing a peroxide composition, peroxycarboxylic acid composition or a peroxycarboxylic acid-forming composition to stop a runaway reaction. Methods for quenching peroxide and peroxycarboxylic acid runaway reactions are also disclosed.

Claims (10)

1 . A method of quenching a runaway reaction of a peroxide or peroxycarboxylic acid composition comprising:

detecting a predetermined increase in rate of temperature increase as a function of time, in a tank, wherein the tank contains a peroxycarboxylic acid composition or mixing a peroxycarboxylic acid-forming composition, wherein the peroxycarboxylic acid composition or mixing a peroxycarboxylic acid-forming composition comprises hydrogen peroxide and peroxycarboxylic acid;

dispensing from about 2 wt-% to about 10 wt-% based on the weight of the peroxycarboxylic acid composition or mixing a peroxycarboxylic acid-forming composition of a stabilizer consisting of phosphoric acid or salt thereof, a pyrophosphoric acid or salt thereof, a phosphonic acid or salt thereof, or a combination thereof into the tank, wherein the stabilizer is combined with a dye to provide a visual indicator of the quenching; and

quenching the runaway reaction wherein at least about 80% of the peroxy species in the peroxycarboxylic acid composition or peroxycarboxylic acid-forming composition in the tank is salvaged after the quenching the runaway reaction and can be reused instead of disposed.

2 . The method of claim 1 , wherein the stabilizer is added within about 15 seconds of the detecting of the increase in rate of temperature increase.

3 . The method of claim 1 , wherein the stabilizer is 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) or a salt thereof.

4 . The method of claim 1 , wherein the stabilizer is a liquid, solid, or a powder.

5 . The method of claim 1 , wherein the stabilizer is dosed at a rate of about 2.5 wt-% to about 5 wt-% based on the weight of the peroxycarboxylic acid composition or peroxycarboxylic acid-forming composition in the tank.

6 . The method of claim 1 , wherein at least about 90% of the peroxy species in the peroxycarboxylic acid composition or peroxycarboxylic acid-forming composition is salvaged after the quenching the runaway reaction and can be reused instead of disposed.

7 . The method of claim 1 , wherein at least about 95% of the peroxy species in the peroxycarboxylic acid composition or peroxycarboxylic acid-forming composition in the tank is salvaged after the quenching the runaway reaction and can be reused instead of disposed.