Gas drive electrolytic cell

• US 7,005,075 B2
• Filed: 02/23/2004
• Issued: 02/28/2006
• Est. Priority Date: 07/16/2001
• Status: Expired due to Term

• Current Assignee: Blois LLC
• Original Assignee: Miox Corporation (Industrie De Nora S.p.A)
• Inventors: Herrington, Rodney E., Schwarz, Kevin, Mich, Gregg C.
• Primary Examiner(s): Hoey, Betsey Morrison
• Application Number:
  US10/785,892
• Publication Number:
  US 20040226873A1
• Time in Patent Office: 736 Days
• Field of Search: 210/748, 210/192, 210/194, 210/232, 210/244, 204/271
• US Class Current: 210/748.2
• CPC Class Codes: A61L 2/035 Electrolysis
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/22 Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
• CPC Class Codes: A61L 2202/11 Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
• CPC Class Codes: A61L 2202/24 Medical instruments, e.g. endoscopes, catheters, sharps
• CPC Class Codes: C02F 1/46104 Devices therefor; Their operating or servicing
• CPC Class Codes: C02F 1/4674 with halogen or compound of halogens, e.g. chlorine, bromine
• CPC Class Codes: C02F 2103/026 Treating water for medical or cosmetic purposes
• CPC Class Codes: C02F 2201/4618 Supplying or removing reactants or electrolyte
• CPC Class Codes: C02F 2209/04 Oxidation reduction potential [ORP]
• CPC Class Codes: C02F 2209/06 pH
• CPC Class Codes: C02F 2209/29 Chlorine compounds
• CPC Class Codes: C02F 2307/02 as part of a bottle
• CPC Class Codes: C25B 9/17 Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof

Abstract

The present invention is directed to an electrolytic cell that is completely sealed during the electrolysis operation during production of oxidant. Gasses generated within the electrolysis operation, primarily hydrogen that is liberated at the cathode surface, increase the pressure within the cell, and the gas pressure is ultimately utilized to expel the oxidant from the cell chamber.

Claims

1. An apparatus to produce a disinfecting solution to treat a fluid, said apparatus comprising:

at least one cell, said cell comprising at least two electrodes wherein at least one electrode comprises at least one cathode and at least one electrode comprises at least one anode;

a control circuit for providing an electrical potential between at least one of said at least one cathode and at least one of said at least one anode, wherein said control circuit is in electrical contact with said at least one cathode and said at least one anode;

electrolyte for placement in said cell wherein said electrical potential causes a controlled electrical charge to pass through an electrolytic solution from said at least one cathode to said at least one anode, thereby generating at least one oxidant in the electrolyte;

an energy source in electrical contact with said control circuit wherein said control circuit delivers an electrical charge;

a headspace within said electrolytic cell to accumulate at least one generated gas under pressure for a purpose of utilizing the generated gas pressure to expel contents of said cell after electrolysis;

an inlet port for introduction of the electrolyte; and

an outlet port to allow discharge of electrolyzed oxidant through said outlet port.

2. The apparatus of claim 1 further comprising an inlet port mechanism to seal said inlet port.

3. The apparatus of claim 2 wherein said inlet port mechanism comprises a positive displacement pump for transfer of the electrolyte to an interior of said cell.

4. The apparatus of claim 2 wherein said inlet port mechanism comprises a control valve to allow transfer of electrolyte to an interior of said cell.

5. The apparatus of claim 2 wherein said inlet port mechanism comprises a dual control valve to allow transfer of electrolyte to an interior of said cell while simultaneously allowing gas to vent out of said cell.

6. The apparatus of claim 2 wherein said inlet port mechanism comprises a check valve to allow transfer of electrolyte to an interior of said cell while restricting flow of gas and fluids out of said cell during electrolysis.

7. The apparatus of claim 1 further comprising an outlet port mechanism to seal said outlet port.

8. The apparatus of claim 1 further comprising an electrolyte storage container.

9. The apparatus of claim 8 wherein said electrolyte storage container is replaceable.

10. The apparatus of claim 8 wherein said electrolyte storage container comprises a vent valve for relief of pressure within said electrolyte storage container.

11. The apparatus of claim 8 wherein said electrolyte storage container further comprises a quick disconnect valve to allow flow of the electrolyte to said cell, and discontinuing flow of the electrolyte from said electrolyte storage container when said electrolyte storage container is disconnected at said quick disconnect valve.

12. The apparatus of claim 8 further comprising a microprocessor circuit.

13. The apparatus of claim 12 wherein said microprocessor circuit identifies said electrolyte storage container with said cell and measures a volume of said electrolyte storage container by virtue of a number of electrolyte-to-oxidant conversion cycles that occur within said cell.

14. The apparatus of claim 1 further comprising a fluid storage container.

15. The apparatus of claim 14 further comprising an oxidation reduction potential (ORP) measuring device.

16. The apparatus of claim 15 further comprising a device for measuring at least one parameter selected from the group consisting of temperature and pH and adjusting said oxidation reduction potential (ORP) for a variation in said at least one parameter.

17. The apparatus of claim 16 wherein said chlorine residual measuring device comprises a microprocessor “

sensor-on-a-chip”

device.

18. The apparatus of claim 1 further comprising a microprocessor circuit.

19. The apparatus of claim 18 wherein said microprocessor circuit comprises a “

sensor-on-a-chip”

device.

20. The apparatus of claim 1 further comprising an oxidant measuring device.

21. The apparatus of claim 1 further comprising a chlorine residual measuring device.

22. The apparatus of claim 1 further comprising an oxidant storage container.

23. The apparatus of claim 1 further comprising a port for injection of oxidants into a source to be treated, said source comprising at least one member selected from the group consisting of a closed fluid body, an open fluid body, a pipe with fluid flowing therein, a sump, a basin, a trough, and a plenum.

24. The apparatus of claim 1 further comprising a microprocessor control system, said microprocessor control controlling at least one process or device selected from the group consisting of said anode, said cathode, said inlet port, said outlet port, and measuring device.

25. The apparatus of claim 24 further comprising an electrolyte storage container and a microprocessor control system, said microprocessor control system comprising an electrolyte storage container microprocessor for identifying said electrolyte storage container with said microprocessor control system.

26. The apparatus of claim 24 further comprising an electrolyte storage container and a microprocessor control system, said microprocessor control system comprising an electrolyte storage container microprocessor for maintaining a record of a number of electrolytic cycles associated with said electrolyte storage container for a purpose of determining a remaining volume and remaining number of cycles available in said electrolyte storage container.

27. The apparatus of claim 1 wherein said control circuit delivers a controlled electrical charge.

28. The apparatus of claim 27 wherein said controlled electrical charge has a predetermined charge value.

29. A method to produce a disinfecting solution to treat a fluid, said method comprising the steps of:

providing at least one cell, the cell comprising at least two electrodes wherein at least one electrode comprises at least one cathode and at least one electrode comprises at least one anode;

making an electrical contact and providing an electrical potential via a control circuit between at least one cathode and at least one anode;

introducing electrolyte in the cell through an inlet port, the electrical potential causing an electrical charge to pass through an electrolytic solution from the at least one cathode to the at least one anode, thereby generating at least one oxidant in the electrolyte;

contacting an energy source with the control circuit wherein the control circuit delivers electrical charge;

accumulating at least one generated gas under pressure in a headspace within the electrolytic cell, utilizing the generated gas pressure to expel contents of the cell after electrolysis; and

discharging electrolyzed oxidant through an outlet port.

30. The method of claim 29 further comprising the step of transferring the electrolyte to an interior of the cell via a positive displacement pump.

31. The method of claim 29 wherein the step of providing at least one cell comprises further providing an inlet port mechanism comprising a control valve and transferring electrolyte to an interior of the cell.

32. The method of claim 29 wherein the step of providing at least one cell comprises further providing an inlet port mechanism comprising a dual control valve and transferring the electrolyte to an interior of the cell while simultaneously allowing gas to vent out of the cell.

33. The method of claim 29 wherein the step of providing a cell further comprises providing an inlet port mechanism comprising a check valve and transferring electrolyte to an interior of the cell while restricting flow of gas and fluids out of the cell during electrolysis.

34. The method of claim 29 further comprising the step of providing an electrolyte storage container.

35. The method of claim 34 further comprising the step of replacing the electrolyte storage container.

36. The method of claim 34 further comprising the step of venting pressure within the electrolyte storage container via a vent valve.

37. The method of claim 34 further comprising the steps of providing a quick disconnect valve to the electrolyte storage container;

allowing flow of the electrolyte to the cell; and

discontinuing flow of the electrolyte from the electrolyte storage container when the electrolyte storage container is disconnected at the quick disconnect valve.

38. The method of claim 34 further comprising the step of identifying the electrolyte storage container with the cell via a microprocessor circuit and measuring a volume of the electrolyte storage container by virtue of a number of electrolyte-to-oxidant conversion cycles that occur within the cell.

39. The method of claim 34 further comprising the step of identifying the electrolyte storage container with a microprocessor control system.

40. The method of claim 34 further comprising the step of maintaining a record of a number of electrolytic cycles associated with the electrolyte storage container for the purpose of determining a remaining volume and remaining number of cycles available in the electrolyte storage container.

41. The method of claim 29 further comprising the step of measuring a chlorine residual.

42. The method of claim 29 further comprising the step of measuring a parameter with a microprocessor “

sensor-on-a-chip”

device.

43. The method of claim 29 further comprising the step of measuring an oxidation reduction potential.

44. The method of claim 43 further comprising the step of measuring at least one parameter selected from the group consisting of temperature and pH and adjusting the oxidation reduction potential value for a variation in the parameter.

45. The method of claim 29 further comprising the step of providing an oxidant storage container and storing oxidant within the container.

46. The method of claim 29 further comprising the step of injecting at least one oxidant into a source to be treated, the source comprising at least one member selected from the group consisting of a closed fluid body, an open fluid body, a pipe with fluid flowing therein, a sump, a basin, a trough, and a plenum.

47. The method of claim 29 further comprising a microprocessor control system, and controlling with the microprocessor control system at least one process or device selected from the group consisting of the anode, the cathode, the inlet, the outlet, and a measuring device.

48. The method of claim 29 further comprising the step of providing a fluid storage container and storing fluid within the container.

49. The method of claim 29 further comprising the step of providing an oxidant measuring device and measuring an oxidant with the device.

50. The method of claim 29 further comprising the step of completely sealing the inlet after introduction of the electrolyte.

51. The method of claim 29 further comprising the step of completely sealing the outlet prior to discharging the electrolyzed oxidant.