In situ cleaning system

• US 10,246,666 B2
• Filed: 07/21/2016
• Issued: 04/02/2019
• Est. Priority Date: 09/23/2009
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Solomon, Kim R., Olson, Keith E., Olson, Erik C., Rischmiller, Michael S.
• Primary Examiner(s): Golightly, Eric W
• Application Number:
  US15/215,896
• Publication Number:
  US 20160326460A1
• Time in Patent Office: 985 Days
• Field of Search: None
• CPC Class Codes: B08B 3/08 the liquid having chemical or dissolving effect substances used, see the relevant classes
• CPC Class Codes: B08B 3/10 with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/42 by ion-exchange ion-exchange in general B01J
• CPC Class Codes: C02F 1/4618 for producing "ionised" acidic or basic water
• CPC Class Codes: C02F 1/4672 by electrooxydation
• CPC Class Codes: C02F 1/5236 using inorganic agents
• CPC Class Codes: C02F 1/68 by addition of specified substances, e.g. trace elements, for ameliorating potable water medicinal water A61K
• CPC Class Codes: C02F 2001/425 using cation exchangers
• CPC Class Codes: C02F 2103/02 Non-contaminated water, e.g. for industrial water supply
• CPC Class Codes: C02F 2201/4618 Supplying or removing reactants or electrolyte
• CPC Class Codes: C02F 5/08 Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
• CPC Class Codes: C11D 3/0005 Other compounding ingredients characterised by their effect
• CPC Class Codes: C11D 3/0057 Oven-cleaning compositions
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/3942 Inorganic per-compounds C11D3/3902 takes precedence
• CPC Class Codes: C11D 3/395 Bleaching agents

Abstract

Methods for using in situ cleaning systems which reduce water hardness and minimize chemical additives are provided. According to the methods and systems, the methods of using may comprise providing feed water to an in situ cleaning system including water treatment components, oxidizing agent generating components and/or alkalinity generating components, contacting one or more articles with a use solution generated by the in situ cleaning system, and washing the one or more articles in a washing system. In addition to the methods of using, the systems for in situ cleaning are provided.

Claims

1. A method for cleaning using a cleaning compound from an in situ cleaning system comprising:

(a) providing feed water to an in situ cleaning system said cleaning system comprising one or more of;

(i) a water treatment component, wherein the water treatment component comprises a treatment reservoir comprising one or more conversion agents selected from the group of metal oxides, metal hydroxides, and mixtures thereof;

(ii) an oxidizing agent generating component; and

(iii) an alkalinity generating component, wherein the alkalinity generating component further comprises a decomposition agent selected from the group consisting of a source of manganese, a source of silver, and combinations thereof, wherein the decomposition agent catalyzes the decomposition of an oxidizing agent to form a source of alkalinity when contacted with the oxidizing agent;

wherein the cleaning system provides a use solution; and

(b) contacting an article with the use solution and;

(c) washing the article in a washing system.

2. The method of claim 1, wherein the use solution comprises at least one of a source of oxidizing agent, a source of alkalinity, water having a reduced solubilized hardness level, and combinations thereof.

3. A method for in situ cleaning use solution generation comprising:

(a) replacing the need for chemicals selected from the group consisting of sources of alkalinity in a detergent, builders, polymers, chlorinated bleach and mixtures thereof;

(b) providing feed water to an in situ cleaning system according to claim 1; and

(c) generating an in situ cleaning use solution from said in situ cleaning system.

4. The method of claim 3, wherein the water treatment component of the in situ cleaning system replaces the need for builders, polymers and mixtures thereof, wherein the oxidizing agent generating component of the in situ cleaning system replaces the need for chlorinated bleach, and wherein the alkalinity generating component of the in situ cleaning system replaces the need for sources of alkalinity in a detergent.

5. The method of claim 1, wherein the water treatment component, the oxidizing agent generating component, and the alkalinity generating component are provided in serial.

6. The method of claim 1, wherein the water treatment component, the oxidizing agent generating component, and the alkalinity generating component are provided in parallel.

7. The method of claim 1, wherein the water treatment component further comprises a threshold agent capable of preventing hard water scale formation caused by hard water deposits.

8. The method of claim 1, wherein the water treatment component further comprises a catalytic system comprising one or more catalysts positioned inside a treatment reservoir, selected from the group consisting of a source of magnesium, aluminum, zinc, and titanium ions, and bound to a supporting material.

9. The method of claim 8, wherein the supporting material is selected from the group consisting of a weak acid cation resin, a polymer having sulfonic acid substituents, a carboxylic acid polymer, and combinations thereof.

10. The method of claim 1, wherein the water treatment component further comprises a resin material capable of controlling water hardness without substantially altering the water source.

11. The method of claim 10, wherein the resin material is an ion exchange resin material capable of controlling water hardness but incapable of performing an ion exchange function.

12. The method of claim 10, wherein the resin material is loaded with a plurality of one or more multivalent cations selected from the group consisting of calcium ions, magnesium ions, and mixtures thereof.

13. The method of claim 10, wherein the resin material includes an acid cation exchange resin selected from the group consisting of a weak acid cation exchange resin, a strong acid cation exchange resin, a copolymer, and combinations thereof.

14. The method of claim 1, wherein the water treatment component further comprises a filtration system capable of removing precipitates from feed water.

15. The method of claim 1, wherein the oxidizing agent generating component comprises an electrochemical unit capable of producing an oxidizing agent selected from the group consisting of hydrogen peroxide, ozone, a peracid, a halogen bleach, and mixtures thereof.

16. The method of claim 15, wherein the in situ cleaning system further comprises a bypass line fluidly connected between the oxidizing agent generating component and the washing system.

17. The method of claim 1, wherein the alkalinity generating component comprises an electrochemical unit capable of producing a source of alkalinity, and an inlet in fluid communication with the electrochemical cell, wherein the inlet provides a source of alkali metal carbonate, bicarbonate, and mixtures thereof to the electrochemical cell.

18. The method of claim 17, wherein the in situ cleaning system further comprises an outlet in fluid communication with a washing system.