CAVIATION ASSISTED SONOCHEMICAL HYDROGEN PRODUCTION SYSTEM
A method and apparatus of producing hydrogen is disclosed comprising applying an electrical current to flow through an aqueous solution. Cavitation is generated within the aqueous solution, where the cavitation lowers an amount of energy required to break chemical bonds of said aqueous solution.
The present invention generally relates to efficient generation of hydrogen and more specifically to in-situ hydrogen generation.
BACKGROUND OF THE INVENTIONWater is composed of two parts hydrogen and one part oxygen by mass or volume. Decomposed by any means, two moles of water will produce one mole of oxygen gas (O2) and two moles of hydrogen gas (H2) at a given input of energy E1. When combined together through any means, hydrogen and oxygen react to form water, releasing a given output of energy E2. By all known principles of physics and chemistry, E1>E2 and thus by thermodynamics the process is not favored in direct action. For hydrogen to be useful as an energy source and economical to use, a means must be created to either reduce the dissociation energy of water, or provide energy in some other fashion in the process, for example with catalytic enhancement, or all the above.
Hydrogen can be manufactured by a variety of means (including, but not limited to chemical, electrical, thermal, radiolysis, etc.) from a variety of chemical substances (including, but not limited to, water, hydrocarbons, plants, rocks, etc.). In the present invention water is used as the hydrogen source and a catalytic combination of electrolysis and cavitation is used to generate the hydrogen. The method of cavitation may be by a variety of means (acoustical, hydrodynamic inertial, non-inertial, mechanical, electromagnetic, etc.), or any combination thereof.
Hydrogen, being the most abundant element on earth as well as in the Universe, holds particular promise as a fuel source, both on earth as well as in space. Hydrogen can power homes and factories, transportation modes (planes, trains, and vehicles). Thus, hydrogen can serve to eliminate carbon fuels completely in the electrical cycle, thus bringing about a net subtraction by the contribution of anthropomorphic processes to terrestrial climate change. There are four significant “hurdles” cited by numerous reviews to the use of hydrogen. Each is noted as follows.
1. Production—How to produce massive amounts of hydrogen in an efficient, safe, environmentally ‘friendly’ fashion.
2. Storage—How to store the low density, flammable gas.
3. Distribution—Hydrogen, being difficult to store, is thus difficult to transport.
4. Use—How can hydrogen be used is a bigger hurdle in light of the prior two items.
Accordingly what is needed is a method and system to overcome the problems encountered in the prior art and to provide an economical method and apparatus to produce hydrogen.
SUMMARY OF THE INVENTIONA method and an apparatus to generate hydrogen gas as H2 from a hydrogen containing liquid such as water. In one embodiment, the structure is a electrolytic cell configured with catalytic enhancements to maximize the volume and mass of hydrogen produced, and minimize the energy input, thus minimizing cost of operation. This device is particularly configured to enhance catalytically the decomposition of water and the formation of hydrogen gas by: 1) the container apparatus configuration of electric and magnetic fields; 2) the use of sonochemistry and cavitation; and 3) the use of applicable solutes and solvents in the device that change the pH, ionic state, and the chemical potential of the device solution.
The cavitation may be generated by a variety of means including but not limited to, acoustic energy, hydrodynamic (inertial, non-inertial), mechanical, electromagnetic energy, etc., or any combination thereof.
There are four significant “hurdles” cited by numerous reviews to the use of hydrogen. Each is noted as follows.
1. Production—How to produce massive amounts of hydrogen in an efficient, safe, environmentally ‘friendly’ fashion. This patent is capable of producing hydrogen from water, and by any fashion in its recombination with oxygen to re-from water, producing no pollution whatsoever and returning water back to its original form.
2. Storage—How to store the low density, flammable gas. This patent eliminates the need for storage, by creating a scalable process to generate hydrogen from water in-situ wherever it is needed. It thus eliminates the need for dangerous, costly, and hazardous storage and transport issues.
3. Distribution—Hydrogen, being difficult to store, is thus difficult to transport. Again, this patent eliminates the need for storage and thus transport, by creating a scalable process to generate hydrogen from water in-situ wherever it is needed. There is no need for dangerous, costly, and hazardous storage, distribution, and transport issues.
4. Use—How can hydrogen be used is a bigger hurdle in light of the prior two items. With the elimination of those two items, the relative cost of the use of fuel cells becomes economical even to the middle class. Without the need for refueling, or by minimizing the need for refueling, the ability to use fuel cells will become ubiquitous to modern life.
A method and apparatus of producing hydrogen is disclosed comprising applying an electrical current to flow through an aqueous solution. Cavitation is generated within the aqueous solution, where the cavitation lowers an amount of energy required to break chemical bonds of said aqueous solution.
The foregoing and other features and advantages of the present invention will be apparent from the following more particular description of the preferred embodiments of the invention, as illustrated in the accompanying drawings.
The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
It should be understood that these embodiments are only examples of the many advantageous uses of the innovative teachings herein. In general, statements made in the specification of the present application do not necessarily limit any of the various claimed inventions. Moreover, some statements may apply to some inventive features but not to others. In general, unless otherwise indicated, singular elements may be in the plural and vice versa with no loss of generality.
In this patent the following definitions apply when these words are used:
Cavitation—Cavitation is the phenomenon of formation (irregardless of mechanism) of vapor bubbles in a fluid, in the region where the pressure of the fluid falls below its vapor pressure. Cavitation can be divided into two classes of behavior: inertial (or transient) cavitation, and non-inertial cavitation. Inertial cavitation is the process where a void or bubble in a liquid rapidly collapses, producing a shock wave. Non-inertial cavitation is the process where a bubble in a fluid is forced to oscillate in size or shape due to some form of energy (such as acoustic fields) input.
Acoustic Energy—For the purposes of this patent, acoustic energy refers to all frequencies, as well as any radiation of any frequency or wavelength in the electromagnetic spectrum. Also for the purposes of this patent, acoustic energy, as well as any radiation of any frequency or wavelength in the electromagnetic spectrum, may be employed as a single frequency (wavelength) or any frequency combination thereof (as a discrete sum, difference, harmonics, sub-harmonics, overtones, series, etc.).
First Embodiment of Hydrogen Production SystemAs previously mentioned, power supply 110 causes cathode 130 to be negatively charged and anode 132 to be positively charged. As a result, an electrical current is created between cathode 130 and anode 132. The electrical current electrolyzes solution 160 and causes hydrogen to form around cathode 130 and oxygen to form around anode 132. Tube 120 funnels the hydrogen out of container apparatus 102 for use further use (shown by arrow 150), such as to provide fuel for hydrogen fuel cells or to directly power an engine. Likewise tube 122 funnels the oxygen out of container apparatus 102 (shown by arrow 155). As solution 160 is electrolyzed and the constituent gases are removed from the system 100, additional solution can be added through an inlet 170.
Transducer 140 produces acoustic energy waves 144 which transmit through and cause cavitation in solution 160. This cavitation decreases the energy required to break the chemical bonds of solution 160. As a result, in the presence of cavitation, a greater amount of hydrogen is produced at cathode 130 at a given voltage than in the absence of cavitation. Alternatively, in the presence of cavitation, the same amount of hydrogen is produced at cathode 130 at a lower voltage than in the absence of cavitation.
Hydrogen production system 100 is designed to be portable. In one embodiment, hydrogen production system 100 is sized approximately 8″ in length by 8″ in width by 8″ in height so that it can fit as an engine component in a vehicle. However, it is clear to one skilled in the art that hydrogen production system 100 and its components can be scaled larger or smaller without affecting the spirit and scope of the present invention. Likewise, it is clear to one skilled in the art that hydrogen production system 100 and its components can take on many different shapes without affecting the spirit and scope of the present invention.
Power supply 210 causes cathode 234 to be negatively charged and anode 230 to be positively charged. As a result, an electrical current is created between cathode 234 and anode 230. The cylindrical shape of anode 230 and the position of cathode 234 along the axis of anode 230 takes advantage of the electrical field produced by cathode 234 and anode 230 and helps to maximize the flow of electricity between cathode 234 and anode 230.
As previously described, the electrical current flowing between cathode 234 and anode 230 electrolyzes solution 160 and causes hydrogen to form around cathode 234 and oxygen to form around anode 230. Tube 250 funnels the hydrogen out of container apparatus 202 for further use (shown by arrow 250). Referring to
Hydrogen production system 200 is the same as hydrogen production system 100 in that transducer 240 produces sound waves 244 which transmit through and cause cavitation in solution 160. This cavitation decreases the energy required to break the chemical bonds of solution 160 via electrolysis. As a result, in the presence of cavitation, a greater amount of hydrogen is produced at cathode 234 at a given voltage than in the absence of cavitation. Alternatively, in the presence of cavitation, the same amount of hydrogen is produced at cathode 234 at a lower voltage than in the absence of cavitation.
Hydrogen production system 200 is designed to be portable. In one embodiment, hydrogen production system 200 is sized approximately 8″ in length by 8″ in width by 8″ in height so that it can fit as an engine component in a vehicle. However, it is clear to one skilled in the art that hydrogen production system 200 and its components can be scaled larger or smaller without affecting the spirit and scope of the present invention. Likewise, it is clear to one skilled in the art that hydrogen production system 200 and its components can take on many different shapes without affecting the spirit and scope of the present invention.
Power supply 410 causes cathode 430 to be negatively charged and anode 403 to be positively charged. As a result, an electrical current is created between cathode 430 and anode 403. The cylindrical shape of anode 403 and the position of cathode 430 along the axis of anode 403 takes advantage of the electrical field produced by cathode 430 and anode 403 and helps to maximize the flow of electricity between cathode 430 and anode 403.
As previously described, the electrical current flowing between cathode 430 and anode 403 electrolyzes solution 160 and causes hydrogen to form around cathode 430 and oxygen to form around anode 403. Tube 420 funnels the hydrogen out of container apparatus 402 for further use (shown by arrow 450). Conically-shaped top member 480 of container apparatus 402 funnels oxygen out of container apparatus 402 (shown by arrow 455). As solution 160 is electrolyzed and the constituent gases are removed from the system 400, additional solution can be added through an inlet 490.
Hydrogen production system 400 is the same as hydrogen production systems 100 and 200 in that transducer 440 produces acoustic energy waves 442 which transmit through and cause cavitation in solution 160. This cavitation decreases the energy required to break the chemical bonds of solution 160 via electrolysis. As a result, in the presence of cavitation, a greater amount of hydrogen is produced at cathode 430 at a given voltage than in the absence of cavitation. Alternatively, in the presence of cavitation, the same amount of hydrogen is produced at cathode 430 at a lower voltage than in the absence of cavitation.
Hydrogen production system 400 is designed to be portable. In one embodiment, hydrogen production system 400 is sized approximately 8″ in length by 8″ in width by 8″ in height so that it can fit as an engine component in a vehicle. However, it is clear to one skilled in the art that hydrogen production system 400 and its components can be scaled larger or smaller without affecting the spirit and scope of the present invention. Likewise, it is clear to one skilled in the art that hydrogen production system 400 and its components can take on many different shapes without affecting the spirit and scope of the present invention. Finally, it is clear to one skilled in the art that any number of transducers 440 may be placed on container apparatus 402 and used to produce sound waves 442 in order to maximize the creation of cavitation within solution 160.
Throughout the descriptions of hydrogen production systems 100, 200, and 400, a cylindrical tube, tube 120, 250, and 420, is used to capture hydrogen formed around the cathode and direct the hydrogen out of the systems. It will be clear to one skilled in the art that tubes 120, 250, and 450 can be replaced by any means to capture and direct the hydrogen. Such means include, but are not limited to, tubes and similarly shaped conduits, membrane filtering, diffusive evaporation, differential pressures, and channeling solution flow.
Embodiments of Cavitation Sub-SystemThroughout the descriptions of hydrogen production systems 100, 200, and 400, transducers 140, 240, and 440 are used to produce acoustic energy waves 144, 244, and 442 which cause cavitation within solution 160. It will be clear to one skilled in the art that transducers 140, 240, and 440 can be replaced by any means for generating cavitation. Such means for creating cavitation include, but are not limited to, acoustic means, mechanical means, hydrodynamic means, electromagnetic means, and ionizing radiation means.
An example of a mechanical means to cause cavitation within hydrogen production systems 100, 200, and 400 includes, but is not limited to, a propeller system contained within container apparatus 102, 202, and 402, which causes cavitation as the propeller spins on its axis.
An example of a hydrodynamic means to cause cavitation within hydrogen production systems 100, 200, and 400 includes, but is not limited to, the injection of a compressed gas, for example, compressed air, into container apparatus 102, 202, and 402 to cause cavitation.
An example of an electromagnetic means to cause cavitation within the hydrogen production systems 100, 200, and 400 includes, but is not limited to, a laser beam directed to pass into solution 160 so as to produce a shock wave that causes cavitation within solution 160. It will be understood by those having skill in the art that other electromagnetic means can be used to produce cavitation. Such electromagnetic means include, but are not limited to, a laser beam, x-rays, gamma rays, high speed electrons, electric arc, magnetic compression, plasma generation, and electromagnetic radiation arising from any type of electron or proton reaction.
Finally, an example of an ionizing radiation means to cause cavitation within the hydrogen production systems 100, 200, and 400 includes, but is not limited to, passing high energy protons into solution 160 where cavitation is formed around the protons. Generally, ionizing radiation is any radiation that is capable of removing an electron from a chemical bond. Therefore, it will be understood by those having skill in the art that such ionizing radiation means include, but are not limited to, all electromagnetic radiation greater in energy than ultraviolet radiation and high energy particles such as photons, protons, neutrons, and charged and uncharged nuclei.
Throughout the descriptions of hydrogen production systems 100, 200, and 400, as well as the examples of the various means of causing cavitation, cavitation is said to occur within solution 160. It will be understood by those having skill in the art that causing cavitation “within” solution 160 means causing cavitation within the electrolytic zone.
Power factors 720 are the major factors affecting the delivery of power to cathodes 130, 234, and 430, and anodes 132, 230, and 403. It will be readily apparent to one skilled in the art that the power factors 720 include voltage applied, current applied, and total power applied. Additionally, although hydrogen production systems 100, 200, and 400 have been shown with a single cathode and single anode, it is apparent to one skilled in the art that the number of voltage/current applications points can be increased without affecting the spirit and scope of the present invention. Likewise it is apparent to one skilled in the art that the sizes and shapes of cathodes 130, 234, and 430 and anodes 132, 230, and 403 can change without affecting the spirit and scope of the present invention. Finally, it is apparent to one skilled in the art that power supplies 110, 210, and 410 can be any power producing device, such as a battery, solar panel, or fuel cell.
Material Composition factors 730 are the major factors affecting the materials of the hydrogen production systems 100, 200, and 400. The materials comprising cathodes 130, 234, and 430, and anodes 132, 230, and 403 are selected to maximize electrical conductivity. Such materials include, but are not limited to, metals such as copper, platinum, and high order non-linear crystals including, but not limited to, lithium niobate and lithium tantalate.
The catalytic factors 740 employed to enhance and catalyze the production of hydrogen are the major factors affecting the energy balance within solution 160. The non-energy input catalytic factors lowering the necessary electrolytic input energy ΔE1 to ΔE2 include but are not limited to: (1) process temperature (as a function of ΔEcav, ΔE2, partial molar concentrations of species), (2) container properties (composition, shape), (3) solution properties (solute/solvent composition [species, concentrations, etc.], pH, chemical potential, pressure, catalytic agents added [supported catalysts gases such as noble gases, etc.]), (4) electrode properties (composition [elemental, isotopic, chemical], shape, microsurface [crystal planes, etc.], macrosurface [holes, edges, etc.], and (5) structure of applied electromagnetic field [energized, unenergized]).
Referring to Table 1, a set of equations is set forth showing that even in the presence of cavitation, the energy required to perform the electrolysis of solution 160 to produce hydrogen is greater than the energy that is produced when that hydrogen is recombined with oxygen. Thus, it is apparent to one skilled in the art that the teachings described herein are not directed to a perpetual energy device. Rather, because of the net energy loss that results from the electrolysis of solution 160, energy is introduced into systems 100, 200, and 400 as represented by power supplies 110, 210, and 410 to drive the electrolysis and catalytic processes.
Referring back to
It has been advantageously shown that the following factors in one embodiment, hydrogen production system 400, greatly increase hydrogen production in the present invention: (1) the use of a specific acoustical spectrum to maximize cavitation in solution 160; (2) the use of sodium or potassium iodide salt in solution 160 to maximize the conductivity and chemical potential of solution 160; (3) the dissolution of an effective amount of noble gas into solution 160, such that the noble gas is completely dissolved in the solution, to electromagnetically enhance the production of cavitation thus maximizing the generation of hydrogen gas—in the present embodiment, the noble gas is preferably argon and an effective amount of noble gas to be completely dissolved in solution 160 is up to five percent (5%) at Standard Temperature and Pressure; (4) the shape and configuration of the electrodes, which for hydrogen production system 400 comprise the electrically conductive inner wall 403 and electrically conductive inner piece 430, to (i) maximize the mechanical separation of the hydrogen and oxygen gas products and (ii) maximize the electrolysis electric field by use of the cylindrical electrode configuration (which maximizes the electric field by a multiplicative ratio of the inner and outer radii); and (5) the shape of the container, for example, hydrogen production system 400 comprises an electrically conductive inner wall 403 contained within an non-electrically conductive outer wall 470 so as to electrically isolate the function of the hydrogen production system 400 from the outside world.
Likewise, although it is clear to one skilled in the art that the solution 160 may be exposed to any temperature and/or pressure and that solution 160 may be contained within either a sealed or unsealed container, it has been advantageously shown for one embodiment, hydrogen system 400, that the hydrogen production using the teachings described herein is preferably performed in a sealed, but not pressurized, container at approximately Standard Temperature and Pressure (STP).
Additionally, it is self evident that the teachings and embodiments set forth herein are focused on minimizing the amount of input energy while maximizing the output of hydrogen gas. The most important factor affecting the total input energy is electrolysis voltage. Thus, it is self evident that requiring less input voltage for the same given amount (or greater) of hydrogen gas generated will result in requiring less input energy, thus, less input power. As a result of requiring less input power, the input-output thermodynamic difference is minimized and as a result a larger fraction of input power can be generated by energy sources such as solar cells, recharged batteries, etc., thus maximizing overall efficiency and quantity of hydrogen generated.
Although a specific embodiment of the invention has been disclosed, it will be understood by those having skill in the art that changes can be made to this specific embodiment without departing from the spirit and scope of the invention. Likewise, it will be understood by those having skill in the art that the teachings herein can be scaled in size to increase or decrease hydrogen production without affecting the scope and spirit of the present invention. The scope of the invention is not to be restricted, therefore, to the specific embodiment, and it is intended that the appended claims cover any and all such applications, modifications, and embodiments within the scope of the present invention.
Claims
1. A method of producing hydrogen comprising:
- applying an electrical current to flow through a solution containing hydrogen; and
- generating cavitation within the solution, where the cavitation lowers an amount of energy required to break chemical bonds of the solution.
2. The method according to claim 1, wherein generating cavitation within the solution further comprises causing acoustic energy to pass through the solution, the acoustic energy producing cavitation within the solution.
3. The method according to claim 1, wherein the step of generating cavitation is performed using any electromagnetic means.
4. The method according to claim 1, wherein the step of generating cavitation is performed using a transducer.
5. The method according to claim 1, wherein the step of generating cavitation is performed using a propeller system.
6. The method according to claim 1, wherein, the step of generating cavitation is performed using compressed gas.
7. The method according to claim 1, wherein the step of generating cavitation is performed by radiation.
8. The method according to claim 1, wherein the solution contains an effective amount of noble gas to be completely dissolved in the solution.
9. The method according to claim 1, wherein the solution comprises a solvent and a solute and the solute further comprises at least one of an iodide salt or iodate salt.
10. The method according to claim 1, wherein the solution comprises a solvent and a solute and the solution contains an effective amount of noble gas to be completely dissolved in the solution and the solute further comprises at least one of an iodide salt or iodate salt.
11. An apparatus for producing hydrogen comprising:
- a container;
- a solution containing hydrogen contained within the container;
- a first electrically conductive piece, where said first electrically conductive piece is in contact with the solution;
- a second electrically conductive piece, where said second electrically conductive piece is in contact with the solution;
- a power supply having a negative output and a positive output, where the negative output is connected to the first electrically conductive piece and the positive output is connected to the second electrically conductive piece thereby causing an electric current to flow through the solution between the first electrically conductive piece and second electrically conductive piece;
- means for causing cavitation in the solution; and
- means for capturing hydrogen formed around the negative electrical piece.
12. The apparatus of claim 11, wherein the means for causing cavitation in the solution comprises a transducer capable of transmitting acoustic energy waves through the solution.
13. The apparatus of claim 11, wherein the means for causing cavitation in the solution comprises a propeller system.
14. The apparatus of claim 11, wherein the means for causing cavitation in the solution comprises a compressed gas injector system capable of injecting compressed air bubbles into the solution.
15. The apparatus of claim 11, wherein the solution contains an effective amount of noble gas to be completely dissolved in the solution.
16. The apparatus of claim 11, wherein the solution comprises a solvent and a solute and the solute further comprises at least one of an iodide salt or iodate salt.
17. The apparatus of claim 11, wherein the solution comprises a solvent and a solute and the solvent contains an effective amount of noble gas to be completely dissolved in the solution and the solute further comprises at least one of an iodide salt or iodate salt.
18. An apparatus for producing hydrogen comprising:
- a container;
- a solution containing hydrogen contained within the container;
- a first electrically conductive piece, where said first electrically conductive piece is adjacent to the solution;
- a second electrically conductive piece, where said second electrically conductive piece is adjacent to the solution;
- a power supply having a negative output and positive output, where the negative output is connected to the first electrically conductive piece and the positive output is connected to the second electrically conductive piece thereby causing an electric current to flow through the solution between the first electrically conductive piece and second electrically conductive piece;
- a cavitation generator using at least one of a transducer, a propeller system, a compressed air injector system; a laser, or a beam of ionizing radiation, and
- a hydrogen capturing device using at least one of a tube, a membrane filter, diffusive evaporation, differential pressure, or channeling solution flow.
Type: Application
Filed: Jul 2, 2008
Publication Date: Jan 7, 2010
Applicant: Sandbox Energy Systems, LLC (Tucson, AZ)
Inventors: James A. Kirchoff (Tucson, AZ), Jose L. Marques (Scarsdale, NY), Francis A. Nottke (Tucson, AZ), Randolph E. Seligmann (Tucson, AZ), Peter D. Vasquez (Tucson, AZ)
Application Number: 12/166,979
International Classification: C25B 1/02 (20060101);