Methods, systems, and reactors for non-thermal plasma over liquid direct ion injection

• US 9,394,189 B2
• Filed: 02/24/2014
• Issued: 07/19/2016
• Est. Priority Date: 03/01/2013
• Status: Active Grant

• Current Assignee: Milton Roy, LLC
• Original Assignee: Walter Buchanan
• Inventors: Buchanan, Walter Riley, Hruska, Christopher Daniel, Forsee, David
• Primary Examiner(s): Mayekar, Kishor
• Application Number:
  US14/187,497
• Publication Number:
  US 20140246381A1
• Time in Patent Office: 876 Days
• US Class Current: 1/1
• CPC Class Codes: C01B 13/115 characterised by the electrical circuits producing the electrical discharge
• CPC Class Codes: C01B 2201/90 Control of the process
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2201/782 Ozone generators

Abstract

A system for performing ozone water treatment comprises a voltage supply circuit and a plasma eductor reactor. The voltage supply circuit includes an H-bridge controller and driver, a transformer, and an output port. The H-bridge controller and driver are configured to switch the electrical polarity of a pair of terminals. A primary of the transformer is connected to the H-bridge driver and controller. A secondary of the transformer connects in parallel with a first capacitor and in series with an inductor and a second capacitor. The output port connects in parallel with the second capacitor. The plasma eductor reactor includes an electric field generator, a flow spreader, and a diffuser. The electric field generator includes a pair of electrodes that generate an electric field. The flow spreader supplies a stream of oxygen. The diffuser supplies a stream of water. The streams of water and oxygen pass through the electric field.

Claims

1. A method of disinfecting water, the method comprising the steps of:

allowing water to flow into a reactor chamber so as to create a low pressure area within the reactor chamber adjacent to the flow of the water;

introducing oxygen into the reactor chamber in the low pressure area to create an oxygen layer adjacent to the flow of the water;

applying a voltage to a pair of spaced apart electrodes to create an electric field through which the water and the oxygen flow;

exposing the oxygen layer to the electric field to ionize a portion of the oxygen and create a layer of ozone above the water; and

exposing the ozone and the water to the electric field to create a blend of water, hydrogen peroxide, and dissolved ozone.

2. The method of claim 1, further comprising the steps of

allowing the oxygen, the water, the hydrogen peroxide, and the dissolved ozone to exit the reactor chamber and enter a gas separation unit;

draining the water, the hydrogen peroxide, and the dissolved ozone from the gas separation unit; and

directing the oxygen from the gas separation unit to reenter the reactor chamber.

3. The method of claim 1, wherein a ratio of hydrogen peroxide to ozone is controlled by modifying the voltage.

4. The method of claim 1, wherein the voltage is supplied by a voltage supply circuit with a DC input voltage component, the voltage supply circuit producing a periodic signal with a fixed duty cycle, and wherein a ratio of hydrogen peroxide to ozone is controlled by modifying a voltage value of the DC input voltage component.

5. The method of claim 1, wherein the voltage is a periodic signal and a ratio of hydrogen peroxide to ozone is controlled by modifying a duty cycle of the voltage.

6. A method of disinfecting water, the method comprising the steps of:

allowing water to flow within a reactor chamber radially outward from a central axis so as to create a low pressure area within the reactor chamber adjacent to the flow of the water;

introducing oxygen within the reactor chamber to flow radially outward from the central axis into the low pressure area to create an oxygen layer adjacent to the flow of the water;

applying a voltage to a pair of annular shaped and spaced apart electrodes to create a cylindrical electric field centered along the central axis through which the water and the oxygen flow;

exposing the oxygen layer to the electric field to ionize a portion of the oxygen and create a layer of ozone above the water; and

exposing the ozone and the water to the electric field to create a blend of water, hydrogen peroxide, and dissolved ozone.

7. The method of claim 6, further comprising the steps of

allowing the oxygen, the water, the hydrogen peroxide, and the dissolved ozone to exit the reactor chamber and enter a gas separation unit;

draining the water, the hydrogen peroxide, and the dissolved ozone from the gas separation unit; and

directing the oxygen from the gas separation unit to reenter the reactor chamber.

8. The method of claim 6, wherein a ratio of hydrogen peroxide to ozone is controlled by modifying the voltage.

9. The method of claim 6, wherein the voltage is supplied by a voltage supply circuit with a DC input voltage component, the voltage supply circuit producing a periodic signal with a fixed duty cycle, and wherein a ratio of hydrogen peroxide to ozone is controlled by modifying a voltage value of the DC input voltage component.

10. The method of claim 6, wherein the voltage is a periodic signal and a ratio of hydrogen peroxide to ozone is controlled by modifying a duty cycle of the voltage.

11. A method of disinfecting water, the method comprising the steps of:

allowing water to flow within a reactor chamber along a perimeter of a cylindrical path so as to create a low pressure area within the reactor chamber adjacent to the flow of the water;

introducing oxygen within the reactor chamber to flow along the perimeter of the cylindrical path into the low pressure area to create an oxygen layer radially outward from the flow of the water;

applying a voltage to a first circular electrode and concentric but radially-smaller second circular electrode to create an annular electric field through which the water and the oxygen flow;

exposing the oxygen layer to the electric field to ionize a portion of the oxygen and create a layer of ozone above the water; and

exposing the ozone and the water to the electric field to create a blend of water, hydrogen peroxide, and dissolved ozone.

12. The method of claim 11, further comprising the steps of

allowing the oxygen, the water, the hydrogen peroxide, and the dissolved ozone to exit the reactor chamber and enter a gas separation unit;

draining the water, the hydrogen peroxide, and the dissolved ozone from the gas separation unit; and

directing the oxygen from the gas separation unit to reenter the reactor chamber.

13. The method of claim 11, wherein a ratio of hydrogen peroxide to ozone is controlled by modifying the voltage.

14. The method of claim 11, wherein the voltage is supplied by a voltage supply circuit with a DC input voltage component, the voltage supply circuit producing a periodic signal with a fixed duty cycle, and wherein a ratio of hydrogen peroxide to ozone is controlled by modifying a voltage value of the DC input voltage component.

15. The method of claim 11, wherein the voltage is a periodic signal and a ratio of hydrogen peroxide to ozone is controlled by modifying a duty cycle of the voltage.