SYSTEMS AND METHODS FOR NON-THERMAL PLASMA OVER LIQUID DIRECT ION INJECTION

• US 20160194224A1
• Filed: 03/15/2016
• Published: 07/07/2016
• Est. Priority Date: 03/01/2013
• Status: Abandoned Application

• Current Assignee: Milton Roy, LLC
• Original Assignee: Milton Roy, LLC
• Inventors: Buchanan, Walter, Forsee, David, Hruska, Chris
• Application Number:
  US15/070,994
• Publication Number:
  US 20160194224A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C01B 13/11 by electric discharge
• CPC Class Codes: C01B 2201/22 Constructional details of the electrodes
• CPC Class Codes: C01B 2201/32 Constructional details of the dielectrics
• CPC Class Codes: C01B 2201/64 Oxygen
• CPC Class Codes: C01B 2201/90 Control of the process
• CPC Class Codes: C02F 1/727 using pure oxygen or oxygen rich gas
• CPC Class Codes: C02F 1/78 with ozone C02F1/4672 takes precedence
• CPC Class Codes: C02F 2209/40 Liquid flow rate
• CPC Class Codes: C02F 2303/04 Disinfection
• CPC Class Codes: C02F 2305/023 Reactive oxygen species, singlet oxygen, OH radical
• CPC Class Codes: H02M 1/12 Arrangements for reducing harmonics from ac input or output
• CPC Class Codes: H02M 7/4815 Resonant converters H02M7/4811 and H02M7/4826 take precedence
• CPC Class Codes: Y02B 70/10 Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
• CPC Class Codes: Y02P 20/10 Process efficiency

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 plasma reactor comprising:

a housing including an internal reactor chamber;

a liquid passageway to supply a stream of liquid to a first end of said reactor chamber;

a gas passageway to supply a stream of gas to the first end of said reactor chamber;

an electric field generator including a first electrode and a spaced apart second electrode configured to generate an electric field therebetween, the first electrode having an annular shape and the second electrode having a circular shape with a diameter smaller than an inner diameter of the first electrode such that the second electrode is positioned within the interior of the first electrode;

a diffuser of elongated cylindrical shape having a circumferential sidewall with an outer surface, a first end of the diffuser positioned at the first end of said reactor chamber; and

wherein the stream of liquid flows axially away from the first end of said reactor chamber along the outer surface of the sidewall and the stream of gas flows adjacent to the stream of liquid as both streams pass through the electric field.

2. The plasma reactor according to claim 1, further comprising:

a dielectric element cylindrical in shape having a circumferential sidewall with an outer surface; and

wherein the dielectric element is positioned such that the sidewall of the dielectric element surrounds the sidewall of the diffuser and the first electrode is positioned along the outer surface of the dielectric element sidewall.

3. The plasma reactor according to claim 1, wherein said diffuser includes said second electrode.

4. The plasma reactor according to claim 1, wherein said diffuser sidewall includes an outward extending curvature located in alignment with the first electrode.

5. The plasma reactor according to claim 1, wherein said electric field generator is configured for ionizing said gas to create a plasma and for injecting at least a portion of said plasma into said liquid to create an effluent.

6. A method of creating a plasma treated liquid, the method comprising the steps of:

allowing a liquid to flow into a reaction chamber;

introducing a gas into said reactor chamber, creating a gas layer adjacent to said flowing liquid;

exposing said gas and flowing liquid layers to an electric field which passes through the gas and flowing liquid, ionizing said gas and creating a layer of plasma gas adjacent to said liquid; and

allowing said gas and liquid to flow out of the chamber.

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

allowing the gas, the plasma, and the liquid to exit said reactor chamber and enter a gas separation unit.

8. The method according to claim 7, further comprising the steps of:

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