WO2007027768A2

WO2007027768A2 - A system and method of hydrogen and oxygen production

Info

Publication number: WO2007027768A2
Application number: PCT/US2006/033853
Authority: WO
Inventors: Michael S. Meyer; Ryan L. Todd
Original assignee: Photech Energies Corporation
Priority date: 2005-08-30
Filing date: 2006-08-30
Publication date: 2007-03-08
Also published as: WO2007027768A3; US20070051633A1

Abstract

The invention is an apparatus and method for producing hydrogen and oxygen gas from an aqueous liquid utilizing a direct current power source. The apparatus utilizes an outer reaction chamber having a plurality of anodes therein and an inner reaction chamber having a cathode disposed therein. A direct current power source capable of supplying a plused output waveform is connected between the plurality of anodes and the cathode, thereby initiating a electrolytic reaction at the anodes and cathode and further, creating a pyrolitic reaction proximate the cathode for enhanced liberation of hydrogen gas .

Description

UTILITY PATENT APPLICATION

FOR A SYSTEM AND METHOD OF HYDROGEN AND OXYGEN PRODUCTION

OF

MICHAEL S. MEYER RYAN L. TODD

BACKGROUND OF THE INVENTION

CROSS REFERENCE TO RELATED APPLICATIONS

[001] The present invention claims the benefit of and priority to co-pending U.S. Provisional Patent Application No. 60,712,627 entitled "System and Method of Hydrogen and Oxygen Production" filed August 30, 2005.

FDELD OF THE INVENTION

[002] The invention relates generally to an apparatus and method for electrolysis of a fluid and more specifically to an apparatus and method for separation of gaseous hydrogen and oxygen from aqueous solutions utilizing a two chamber reaction space and electrolytic action as a separation method and catalyst for pyrolitic separation of the aqueous fluid.

SUMMARY OF THE INVENTION

[003] In recent years, the advent of fuel cell technology has required the use of hydrogen gas as a fuel source for many advanced fuel cells which has in turn sparked a high demand for hydrogen gas. Unfortunately, prior art systems for the production of hydrogen gas are relatively expensive to operate due to the high energy cost of producing hydrogen gas from known methods. Various prior art systems are employed to produce hydrogen, including electrolytic systems whereby a current is passed through an aqueous solution to force the separation of hydrogen and oxygen molecules from the water in the solution. Additionally, some prior art systems produce hydrogen by cracking various hydrocarbons to produce gaseous hydrogen. However, these hydrocarbon cracking systems require a large energy input to produce a relatively small amount of hydrogen gas, thereby making them considerably more expensive to produce than an equivalent energy amount of conventional gasoline.

[004] In fact, none of these prior art systems are capable of producing hydrogen, ^■ gas at a cost or volume necessary to make it a competitively-, priced fuel to gasoline. Additionally; one of the underlying purposes for hydrogen fuel cell production is to employ the fuel cells as the motive force of the modern automobile, thereby reducing atmospheric emissions caused by the combustion of conventional hydrocarbon fuels. However, since a great deal of energy is required to produce hydrogen by prior art methods, and this energy is primarily produced by burning coal or oil, the overall environmental impact of utilizing hydrogen as a fuel is not greatly reduced by modern hydrogen production methods.

[005] Furthermore, the utilization of hydrogen gas as a direct injection additive to modem internal combustion engines greatly enhances the operating efficiency of the engines. However, it is difficult to store hydrogen gas on board an automobile or other conveyance, due to the necessity of high pressure storage tanks and the concomitant safety hazards entailed in storing a highly pressurized explosive gas in a vehicle.

[006] The present invention obviates the aforementioned problems by providing an apparatus, system and method for hydrogen and oxygen gas production that is initiated via a controlled electrolytic reaction in a chamber wherein an aqueous fluid resides, resulting in separation of the aqueous fluid into its elemental components. Specifically, the present invention provides an apparatus and method for separation of elemental hydrogen and oxygen from an aqueous solution utilizing electrolytic action to initiate the separation process and a resultant pyτolitic reaction that greatly enhances separation of elemental hydrogen and oxygen from the aqueous solution.

[007] The apparatus of the present invention includes an outer chamber containing the aqueous solution and enclosing a plurality of cathodes placed at a plurality of points around the interior the outer chamber. The invention further includes an inner chamber disposed inside the outer chamber and in fluid communication with the first chamber at a portion thereof. The second chamber partially encloses a single anode and includes a vent to permit gas produced during the reaction to escape from the second chamber.

[008] The plurality of cathodes are placed at -various locations in Ihe. first - chamber;such:ihat they are .substantially equidistant from the single anpde, STjie. cathodes?and anode are thence, electrically connected to a source.pf dϋectcurrent; powervWhereby current flows frpnjhthe anode through the jμqueoύs solution to the plurality of cathodes, creating a plurality of current conduction paths through the fluid in the outer chamber. These conduction paths necessarily converge in an area of the second chamber proximate the., anode, creating extremely, high temperature and the release of concomitant light energy around the anode, thereby enhancing the gas separation reaction by sustaining a pyrolitic reaction proximate the anode.

[009] Other features, objects and advantages of the present invention will become clear after reading the detailed description of the preferred embodiments taken in conjunction with the appended drawing Figures.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

[010] Fig. 1 is a schematic view of an apparatus for fluid separation in accordance with one embodiment of the present invention.

[011] Fig.2 is a view of the apparatus of Fig. 1 taken along the line 2-2 in accordance with one embodiment of the present invention.

[012] Fig.3 is a schematic view of an apparatus for fluid separation employing spherical reaction chambers in accordance with one embodiment of the present invention.

[013] Fig.4 is a schematic view of an apparatus for fluid separation in accordance with an alternative embodiment of the invention utilizing Tesla coils in place of cathodes.

[014] Figs. 5A-C are graphical representations of exemplary direct current waveforms in accordance with alternative embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)

[015] Referring now to drawing Figs. 1-4, and in accordance with a constructed embodiment of the present invention, an apparatus 10 for the separation of hydrogen and oxygen from an aqueous fluid comprises a first chamber 20 that is capable of containing an aqueous solution or fluid 1 therein and that is substantially non- reactive with fluid 1. For purposes of the description of the present invention reference will consistently be made to production of hydrogen and oxygen by- separation of an aqueous solution caused by a controlled pyτolitiojteactiόn initiated by electrolysis. One of ordinaiy, skill in the art will recognize that the apparatus and method described and claimed Herein may be employed to produce or liberate various constituents capable of being separated through electrolytic and pyrolitic reaction mechanisms.

[016] The separation apparatus 10 further comprises an inner chamber 30 that is in fluid communication with outer chamber 20 at an open portion 32 thereof to permit aqueous solution 1 to enter inner chamber 30. Furthermore, inner chamber 30 comprises a port or vent 34 to permit the gas created therein to exit inner chamber 30 to be collected in a tank 36 or similar receptacle. Similarly, outer chamber 20 may include a port or vent 24, or a plurality thereof, to allow the gas created therein to exit outer chamber 20 thence be collected in a tank 26, as will be discussed in greater detail herein below.

[017] The invention 10 further comprises a plurality of cathodes 50 disposed at a plurality of points in outer chamber 20. As seen in Fig. 1 cathodes 50 are disposed circumferentially around a wall 28 of outer chamber 20. Cathodes 50 may be secured to the interior of wall 28 of outer chamber 20, or alternatively positioned through a plurality of apertures 22 located at a plurality of points in wall 28 around outer chamber 20.

[018] A single anode 60 is located proximate the open portion 32 of inner chamber 30. Anode 60 may be secured directly to inner chamber 30, or it may be mounted through an aperture 22 in outer chamber 20 and extend inwardly into inner chamber 30, as best seen in Figs. 1 and 4.

[019] Anode 60 is advantageously positioned at a location within inner chamber 30 such that any gas produced proximate anode 60 will rise within inner chamber 30, and not escape outwardly into outer chamber 20. This feature of the present invention enhances the separation of the constituent gases so that the resultant hydrogen and oxygen gases drawn from the apparatus 10 are relatively pure. In a yet further embodiment of the invention, cathodes 50 may be arranged such that they are each substantially equidistant from a point in inner chamber 30, as will be discussed in greater detail herein below.

[OiO] Both outer chamber 20 agd inner chamber 30imay Jbjej comprised pfc fotaS example, a plexiglass or polycarbonate material, or alternatively. any :yariety^"of nόiv- reactive materials capable of containing aqueous solution L Ihrierch'amber 30 and outer chamber 20 may also be comprised of a non-reactive metal such as stainless steel.

[021] The present invention further comprises a power supply 3 capable of- delivering direct current (DC) power to a load. The power supply 3 is connected between anode 60 and the plurality of cathodes 50 to create a potential difference therebetween. In one embodiment of the present invention, DC power.supply 3 provides a square wave direct current signal at 240 volts as an input power source to the invention 10. The utilization of a pulsed direct current wave form from power source 3 as provided by a square wave DC power generator permits enhanced electrolytic and pyrolitic reactions in an area proximate anode 60, as will be described further herein below. In a yet further embodiment of the present invention, a conventional DC welding generator operating at, for example, 240 VDC may be employed as power source 3.

[022] The present invention may further comprise a plurality of conventional condensers or heat exchangers 80 that are positioned proximate ports 24 and 34 to remove any residual steam or moisture that may escape through ports 24 and 34, thereby permitting the gasses exiting through ports 24 and 34 to enter tanks 26 and 36 respectively, relatively free of residual moisture.

[023] A make up aqueous solution tank 90 may be used to maintain fluid 1 in outer chamber 20 at a relatively constant level and temperature through operation of an intake valve 92 and supply line 94. If desired, a simple feedback control system utilizing commercially available level and temperature sensors may be employed to maintain a relatively constant fluid level and fluid temperature in outer and inner chambers 20 and 30 respectively by simple activation of a solenoid operated valve 92 responsive to level and temperature measurements. The level of aqueous solution 1 in outer chamber 20 should remain above the points at which cathodes 50 are located to enable an efficient conduction of current from cathodes 50 to anode 60 once power source 3 is connected therebetween.

[024] While the electrically conductive cathodes 50 and anode 60 may comprise a wide variety of materials, ;.on§:qf ordinary skill will appreciate thatnonrreactiye ^•<; corøiuctiv&mateπals will provide; the longest service life before ^replacement becomes necess^rjU Materials that, may be used as jφode 60. include, butareφόjt ^• limited to gold, silver, platinum^ carbon and chiome-moly. Materials suitable for use as cathodes 50 include, but are not limited to titanium, carbon, zinc, stainless steel and aluminum.

[0251 to ^one embodiment of the present invention anode 60 further comprises m • .. insulating portion 62 secured around anode 60 that extends into open portion 32 of inner chamber 30, as best seen in Figl. Insulating portion 62 covers that portion of anode 60 that is exposed in outer chamber 20 thereby prohibiting it from conducing .. electricity so that all conduction takes place at a top exposed portion 64 of anode GB, which is located in inner chamber 30. This feature of the present invention forces the current conduction paths from cathodes 50 to anode 60 to extend upwardly into inner chamber 30 and converge at a point proximate the top portion 64 of anode 60, thereby creating an electrolytic and pyrolitic reaction that liberates hydrogen and oxygen from aqueous solution 1 proximate anode 60. The liberated hydrogen gas thence bubbles upwardly from anode 50 through inner chamber 30, through port 34 and into tank 36.

[026] Simultaneously, a concomitant release of oxygen gas occurs at cathodes 50 due to electrolysis of aqueous solution 1, whereupon the oxygen exits outer chamber 20 at port 24 and is stored in tank 26. The area immediately surrounding exposed portion 64 of anode 60 becomes extremely hoi, thereby initiating pyrolitic separation of the fluid 1 molecules proximate anode 60 which results in tremendous efficiency of separation of fluid 1 into its constituent gases.

[027] Drawing Fig. 3 depicts an alternative embodiment of the present invention wherein inner and outer chambers 30 and 20 are substantially spherical in shape, and wherein inner spherical chamber 30 remains in fluid communication with outer chamber 20 via an open portion 32. Cathodes 50 are spaced around an interior surface 28 of outer chamber 20, or at a plurality of points that are substantially . equidistant to anode 60, disposed within inner chamber 20. In fact, a wide variety of container shapes may be employed for outer chamber 20 and inner chamber 30, as long as a plurality of cathodes 50 are spaced such mat they are substantially equidistant from anode 60, so that the electrical resistance between each of thα plurality of cathodes 50 and aiiόde_tβQ is approximately equal • This arrangement permits, the hear simultaneous ^"cςmvefgence of a plurality of current conduction paths at anode 60, whereby the gas-liberating reaction is initiated.' In an alternative embodiment of the instant invention, the plurality of cathodes 50 may be arranged so that their respective distances to anode 60 are not substantially equidistant.

[028] In a yet further embodiment of the invention 10 as shown in Fig. 4, a plurality of Tesla coils 100 are employed in place of cathodes 50, and a single ground rod or terminal 110 replaces anode 60 so that a plurality of electrical discharges occur between each of said plurality of Tesla coils and ground rod 110, thereby initiating apyrolitic reaction resulting in the liberation of hydrogen and oxygen gasses from aqueous solution 1. Tesla coils 100 are powered by conventional electronic circuitry, available from, for example, Lindsay Scientific Co., Inc.

[029] Alternatively, Tesla coils 100 may be electrically connected to a plurality of cathodes 50 that are already positioned in outer chamber 20 such that the cathodes 50 conduct the electrical energy discharged from Tesla coils 100. Ground terminal 110 may still include an insulating portion 62 separating ground terminal 110 from outer chamber 20. This feature of the invention forces the electrical discharge from Tesla coils 100 to travel downwardly in outer chamber 20, thence upwardly into inner chamber 30 to find a conduction path to ground through terminal 110, thereby concentrating the liquid separation reaction proximate the tip of terminal 110.

[030] In operation, power source 3 is electrically connected between cathodes 50 and anode 60 whereby an electrical current conduction path is established through aqueous solution 1 between each cathode 50 and anode 60. These multiple current conduction paths converge proximate the conductive portion of anode 60 resulting in both an electrolytic reaction and pyrolitic reaction that occurs around anode 60. The initial electrolytic reaction begins liberation of constituent gases through conventional electrolysis. The convergence of the multiple conductive paths proximate anode 60 cause extremely high temperatures in a reaction space proximate anode 60, thereby initiating a pyrolitic reaction in the reaction space. In an alternative embodiment of the present invention, a square wave output DC generator may be used as power source 3 operating at, for example_y240 VDC. By .slights-variations and control of the Current supplied by power source- 3 the pyrolitic reaction maybe controlled and sftsføinefl in a stable fashion^

[031] As seen if Figs. 5A-C, the bCpower source 3 may provide ja pujsed DC output signal as an input voltage between cathodes 50 and anode 60. Fig.^'5A depicts a half-wave rectified AC input, Fig. 5B depicts a constant voltage pulsed DC input, and Fig. 5C depicts a saw tooth DC input, any of which may be advantageously . employed as a DC power source for the instant invention to initiate and sustain the gas liberating reactions. While Figs. 5A-5C depict exemplary power input waveforms, they are not intended to be limiting to the scope of the present invention which is capable of being operated in conjunction with a wide variety of power sources.

[032] In an alternative embodiment of the invention, Tesla coils 100 are arranged to periodically discharge, either directly into outer chamber 20 or through cathodes 50, wherein the discharge results in electrical energy traveling through aqueous solution 1 to ground terminal 110, thereby resulting in electrolytic separation as well as pyrolitic separation of hydrogen and oxygen.

[033] In a further embodiment of the present invention a wide variety of chemical catalysts may be added to aqueous solution 1 to enhance the electrolytic and pyrolytic reactions at anode 60 thereby resulting in more efficient separation of hydrogen and oxygen. For example, muratic acid solutions, hydrochloric acid solutions, sulfuric acid solutions, phosphoric acid solutions and potassium carbonate may all be added to aqueous liquid 1 to enhance the gas production process. Furthermore, these catalysts may be mixed with the aqueous solution 1 in make up tank 90 to provide a constant supply of aqueous solution 1 and catalyst to the system of the present invention through periodic actuation of valve 90

1034] While the present invention has been shown and described herein in what are considered to be the preferred embodiments thereof, illustrating the results and advantages over the prior art obtained through the present invention, the invention is not limited to those specific embodiments. Thus, the forms of the invention shown and described herein are to be taken as illustrative only and other embodiments may be selected without departing from the scope of the present invention, as set forth in the claims appended hereto.

Claims

We claim:

1. An apparatus for producing hydrogen and oxygen gas from an aqueous liquid utilizing a direct current power source comprising: an outer chamber containing said aqueous liquid; an inner chamber disposed^" within said outer chamber and in fluid communication therewith; a plurality of cathodes positioned in said outer chamber at a plurality of points; a single anode positioned within^' said inner chamber; and wherein said direct current power source is electrically connected between said plurality of cathodes and said anode thereby initiating an electrolytic reaction within said inner chamber causing hydrogen gas and oxygen gas production.

2. An apparatus as claimed in claim 1 wherein said plurality of cathodes are substantially equidistant from said anode.

3. An apparatus as claimed in claim 1 further comprising: an outlet port in said inner chamber whereby the hydrogen produced therein may be vented.

4. An apparatus as claimed in claim 3 wherein said inner and outer chambers are substantially cylindrical.

5. An apparatus as claimed in claim 4 wherein the cylindrical inner chamber comprises an open end in fluid communication with said outer chamber and wherein said anode is positioned proximate the open end such that hydrogen gas produced proximate said anode rises through said cylindrical inner chamber and exits through the outlet port therein.

6. An apparatus as claimed in claim 1 wherein said inner and outer chambers are substantially spherical.

7. An apparatus as claimed in claim 3 further comprising an outlet port in said outer chamber whereby oxygen produced therein may be vented.

8., An apparatus as claimed in claim 1 further comprising: a condenser in fluid communication with an upper portion of said? inner chamber for removing residual moisture from the hydrogen gas produced therein.

9. An apparatus as claimed in claim 7 further comprising: a condenser in fluid communication "with an upper portion of said outer chamber for removing residual moisture from the oxygen gas produced (herein.

10. An apparatus as claimed in claim 1 wherein said direct current power source supplies a pulsed direct current output to said apparatus.

11. An apparatus as claimed in claim 10 wherein said pulsed direct current output comprises a square wave output.

12. An apparatus as claimed in claim 10 wherein said pulsed direct current output comprises a saw tooth wave output.

13. An apparatus as claimed in claim 10 wherein said pulsed direct current output is half-wave rectified alternating current.

14. A method for producing hydrogen from an aqueous liquid utilizing a direct current power source comprising the steps of: providing an outer chamber for containing said aqueous liquid; providing an inner chamber disposed within said outer chamber and in fluid communication therewith; providing a plurality of cathodes disposed at a plurality of points within said outer chamber; providing an anode disposed within said inner chamber; and connecting said direct current power source between said anode and said plurality of cathodes whereby direct current flows from said cathodes to said anode, thereby initiating a reaction proximate said anode, a product of which is hydrogen.

TiSi' A method as claimed in claim .14 wherein said direct current power source Λ supplies a pulsed direct current output to said apparatus!

16. A method as claimed in claim 15 wherein said pulsed direct current output comprises a square wave output.

17. A method as claimed in claim 15 wherein said pulsed direct current output comprises a saw tooth wave output.

18. A method as claimed in claim 15 wherein said pulsed direct current output is half-wave rectified alternating current.

19. A method for producing hydrogen from an aqueous liquid as claimed in claim 14 wherein said reaction proximate said anode is an electrolytic reaction.

20. A method for producing hydrogen from an aqueous liquid as claimed in claim 19 wherein said reaction proximate said anode further comprises a pyrolitic reaction.

21. An apparatus for producing hydrogen gas and oxygen gas from an aqueous liquid utilizing a high voltage electrical discharge power source comprising: an outer chamber containing said aqueous liquid; an inner chamber disposed within said outer chamber and in fluid communication therewith; a plurality of Tesla coils positioned in said outer chamber at a plurality of points; a single ground terminal positioned within said inner chamber; and wherein said power source is electrically connected to said plurality of Tesla coils thereby initiating a periodic electrical discharge from said coils to said ground terminal causing an electrolytic reaction within said inner chamber that liberates hydrogen gas and oxygen gas from said aqueoos liquid.

22. An apparatus for producing hydrogen and oxygen from an aqueous liquid as claimed in claim 21 wherein .said outer chamber and said inner chambe.r are, cylindrical.,

23. An apparatus for producing Hydrogen and oxygen from an aqueous liquid as claimed in claim 22 wherein said outer chamber and said inner chamber are spherical.