CA3045086A1 - Apparatus and method for generating hydrogen by electrolysis - Google Patents
Apparatus and method for generating hydrogen by electrolysis Download PDFInfo
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- CA3045086A1 CA3045086A1 CA3045086A CA3045086A CA3045086A1 CA 3045086 A1 CA3045086 A1 CA 3045086A1 CA 3045086 A CA3045086 A CA 3045086A CA 3045086 A CA3045086 A CA 3045086A CA 3045086 A1 CA3045086 A1 CA 3045086A1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
A vortex reactor (200) for generating hydrogen gas through electrolysis of water, comprising: a reactor body having a first end (204) and a second end (206); one or more inlet ports (202) disposed at or near the first end (204) and configured to direct an electrolytic fluid into the reactor body so that the fluid moves toward the second end (206), the one or more inlet ports (202) being tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end (206); an anode (242) disposed at the first end(204); and a tubular cathode (244) disposed within the reactor body between the first and second ends, the cathode (244) disposed so that the vortical path of the fluid contacts an inner surface of the cathode (244) as the fluid moves toward the second end (206), wherein power supplied to the anode (242) and cathode (244) cause hydrogen gas to form at the cathode (244) and oxygen gas to form at the anode (242), the vortical path of the moving fluid shearing the forming gases to enable collection of the gases.
Description
APPARATUS AND METHOD FOR GENERATING HYDROGEN
BY ELECTROLYSIS
BACKGROUND
[0001] The present disclosure relates generally to devices, systems, and methods for producing hydrogen. In particular, the present disclosure describes embodiments which utilize one or more vortex reactors configured to generate vortical fluid flows to provide effective electrolysis of water into hydrogen gas and oxygen gas.
BY ELECTROLYSIS
BACKGROUND
[0001] The present disclosure relates generally to devices, systems, and methods for producing hydrogen. In particular, the present disclosure describes embodiments which utilize one or more vortex reactors configured to generate vortical fluid flows to provide effective electrolysis of water into hydrogen gas and oxygen gas.
[0002] Electrolytic separation of water into hydrogen and oxygen is well known.
to Typically, a DC electrical power source is connected to two electrodes, or two plates, which are placed in the water. Hydrogen gas (H2) forms at the negatively charged cathode where electrons (e-) enter the water and reduce hydrogen to form hydrogen gas.
Oxygen gas (02) forms at the positively charged anode, which receives electrons (e-) from the water by oxidizing oxygen to form oxygen gas. Assuming ideal faradaic efficiency, the amount of hydrogen generated is twice the amount of oxygen, and both are proportional to the total electrical charge conducted by the solution. However, in many cells competing side reactions occur, resulting in different products and less than ideal faradaic efficiency.
BRIEF SUMMARY
to Typically, a DC electrical power source is connected to two electrodes, or two plates, which are placed in the water. Hydrogen gas (H2) forms at the negatively charged cathode where electrons (e-) enter the water and reduce hydrogen to form hydrogen gas.
Oxygen gas (02) forms at the positively charged anode, which receives electrons (e-) from the water by oxidizing oxygen to form oxygen gas. Assuming ideal faradaic efficiency, the amount of hydrogen generated is twice the amount of oxygen, and both are proportional to the total electrical charge conducted by the solution. However, in many cells competing side reactions occur, resulting in different products and less than ideal faradaic efficiency.
BRIEF SUMMARY
[0003] The present disclosure relates to the production of hydrogen gas through the electrolysis of water using a vortex reactor. Embodiments described herein beneficially utilize vortical flow to achieve a rotating mass of electrolytic fluid through which a direct current is passed. The electrolysis of water molecules will occur at the interface between the fluid and the anode and the interface between the fluid and the cathode.
With a suitable electrolyte, hydrogen will appear at the cathode and oxygen will appear at the anode.
Centripetal and centrifugal as well as magnetic forces and unique geometrical arrangements are exploited to facilitate the rapid separation and collection of the two separate gas streams within a single reactor.
With a suitable electrolyte, hydrogen will appear at the cathode and oxygen will appear at the anode.
Centripetal and centrifugal as well as magnetic forces and unique geometrical arrangements are exploited to facilitate the rapid separation and collection of the two separate gas streams within a single reactor.
[0004] In one embodiment, a vortex reactor includes a reactor body having a first end and a second end. One or more inlet ports are disposed at or near the first end and are configured to direct an electrolytic fluid into the reactor body so that the fluid moves away from the first end and toward the second end of the reactor. The inlet ports can be tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end. The reactor also includes an anode disposed at or near the first end, and a tubular cathode disposed within the reactor body between the first and second ends.
The cathode is disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end. When power is supplied to the anode and cathode, the operating reactor causes hydrogen gas to form at the cathode and oxygen gas to form at the anode. The vortical path of the moving fluid functions to shear the forming gases to enable effective collection of the gases.
The cathode is disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end. When power is supplied to the anode and cathode, the operating reactor causes hydrogen gas to form at the cathode and oxygen gas to form at the anode. The vortical path of the moving fluid functions to shear the forming gases to enable effective collection of the gases.
[0005] In some embodiments, the anode is configured as a disk or ring disposed at the first end of the reactor. In other embodiments, the anode has a tubular shape extending from the first end of the reactor upwards toward the tubular cathode. In some 1() embodiments, the tubular anode and the tubular cathode may join together to form a contiguous tube structure within the reactor (but with the tubular anode and cathode being electrically insulated from each other, except for the water surrounding them). The vortical path of the moving reactor fluid contacts the inner surface of the combined anode/cathode structure to shear the generated bubbles.
[0006] In certain embodiments, magnetic fields are utilized to influence bubble size and bubble size distribution, preferably by minimizing both. One or more magnetic elements are disposed so as to apply the Lorentz force in a manner that increases bubble detachment activity at both the cathode-fluid interface and the anode-fluid interface.
Beneficially, embodiments enable rapid bubble detachment from electrode surfaces. The more rapidly gas bubbles detach from the surface of the electrodes, the greater the net surface area available for current to pass and thus the greater the current density. This greater current density enhances the electrolysis of the water. Removal of gas bubbles from the electrodes also reduces resistance between the electrodes and water, increasing efficiency of hydrolysis.
BRIEF DESCRIPTION OF THE DRAWINGS
Beneficially, embodiments enable rapid bubble detachment from electrode surfaces. The more rapidly gas bubbles detach from the surface of the electrodes, the greater the net surface area available for current to pass and thus the greater the current density. This greater current density enhances the electrolysis of the water. Removal of gas bubbles from the electrodes also reduces resistance between the electrodes and water, increasing efficiency of hydrolysis.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] To further clarify the above and other advantages and features of the present disclosure, a more particular description of the disclosure will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
It is appreciated that these drawings depict only illustrated embodiments of the disclosure and are therefore not to be considered limiting of its scope. Embodiments of the disclosure will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
It is appreciated that these drawings depict only illustrated embodiments of the disclosure and are therefore not to be considered limiting of its scope. Embodiments of the disclosure will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
[0008] Figure lillustrates an exemplary vortex reactor embodiment;
[0009] Figure 2 illustrates a reactor embodiment configured for generating hydrogen gas and oxygen gas via electrolytic splitting of water with gas separation aided by a magnetic component;
[0010] Figure 3 schematically illustrates shows the magnetic field orientation with respect to a disk of a cathode-influencing magnetic component; and
[0011] Figure 4 illustrates an alternative embodiment of a reactor configured for generating hydrogen gas and oxygen gas via electrolytic splitting of water with gas separation aided by a tubular magnetic component.
DETAILED DESCRIPTION
Introduction
DETAILED DESCRIPTION
Introduction
[0012] The present disclosure relates to the production of hydrogen gas through the electrolysis of water using a vortex reactor. Embodiments described herein beneficially utilize vortical flow to achieve a rotating mass of electrolytic fluid through which a direct current is passed. The electrolysis of water molecules will occur at the interface between the fluid and the anode and the interface between the fluid and the cathode.
With a suitable electrolyte, hydrogen will appear at the cathode and oxygen will appear at the anode.
Centripetal and centrifugal as well as magnetic forces and unique geometrical arrangements are exploited to facilitate the rapid separation and collection of the two separate gas streams within a single reactor.
With a suitable electrolyte, hydrogen will appear at the cathode and oxygen will appear at the anode.
Centripetal and centrifugal as well as magnetic forces and unique geometrical arrangements are exploited to facilitate the rapid separation and collection of the two separate gas streams within a single reactor.
[0013] Magnetic fields (e.g., generated by permanent magnets) are utilized in some embodiments to influence bubble size and bubble size distribution, preferably by minimizing both. One or more magnetic elements are disposed so as to apply the Lorentz force in a manner that increases bubble detachment activity at both the cathode-fluid interface and the anode-fluid interface. Beneficially, embodiments enable rapid bubble .. detachment from electrode surfaces. The more rapidly gas bubbles detach from the surface of the electrodes, the greater the net surface area available for current to pass and thus the greater the current density. This greater current density enhances the electrolysis of the water. Removal of gas bubbles from the electrodes also reduces resistance between the electrodes and water, increasing efficiency of hydrolysis.
[0014] Although preferred vortex reactor embodiments for generating hydrogen gas through electrolysis are described herein, other exemplary vortex reactor configurations which may be utilized to effectively generate hydrogen gas are described in U.S. Patent Application No. 15/170,298, which is incorporated herein in its entirety by this reference.
[0015] Further, while the illustrated embodiments are described with particular anode and cathode positions, it will be understood that the anode/cathode positions may be switched or rearranged as desired according to particular application needs.
For example, the relative positions of the anode and cathode may be swapped in certain embodiments such that the cathode is positioned below the anode.
Overview of Vortex Reactor Configurations
For example, the relative positions of the anode and cathode may be swapped in certain embodiments such that the cathode is positioned below the anode.
Overview of Vortex Reactor Configurations
[0016] Figure 1 illustrates an embodiment of an exemplary vortex reactor 100. The illustrated embodiment includes one or more inlet ports 102 disposed at a first end 104 of vortex reactor 100. The illustrated inlet ports 102 open into a reactor body 108 configured to to contain a reactor fluid mixture which is directed into vortex reactor 100 through the inlet ports 102. In the illustrated embodiment, the reactor body 108 has a circular cross-section. Other embodiments can include a triangular, square, rectangular, or other polygonal shaped cross-section, or an ellipsoid or ovoid cross-section. The illustrated reactor body 108 has a cylindrical shape with substantially uniform diameter along its height. In other embodiments, the reactor body 108 can have a non-uniform diameter along its height, such as a conical shape with a diameter at a second end 106 that is narrower than a diameter at a first end 104 (or vice versa).
[0017] As illustrated, inlet ports 102 are oriented so as to receive the reactor fluid mixture at an angle that is tangential or substantially tangential to an inner surface of the reactor body 108. The orientation of the inlet ports 102 causes the incoming fluid to form a vortex as it advances into reactor body 108. The generated vortex causes the fluid mixture to be subjected to centripetal and/or centrifugal forces along the trajectory of the vortex.
Additionally, or alternatively, reactor 100 can include a pump, turbine and/or impeller assembly, or other fluid movement means configured to form and/or strengthen the vortex.
Additionally, or alternatively, reactor 100 can include a pump, turbine and/or impeller assembly, or other fluid movement means configured to form and/or strengthen the vortex.
[0018] The illustrated embodiment includes two inlet ports 102 disposed at the first end 104. Other embodiments may include one inlet port or may include more than two inlet ports. In the illustrated embodiment, the first end 104 and the associated inlet ports 102 are disposed at the bottom of a vertically oriented reactor body 108, and the vortex that results from reactor operation therefore rises vertically toward the second end 106. In other embodiments, one or more inlet ports may be disposed on an upper end of a vertically oriented reactor body, allowing for a downflow vortex during operation of the reactor. In yet other embodiments, a reactor body may be oriented horizontally, or diagonally, and one or more inlet ports can be configured to provide a horizontally or diagonally moving vortex. The orientation of the reactor 100 with respect to gravity may therefore be configured according to preferences and/or particular application needs.
[0019] In the illustrated embodiment, the one or more inlet ports 102 are configured to deliver fluid at an angle that is tangential to the inner surface of the reactor body 108. The 5 illustrated inlet ports 102 are angled to be substantially perpendicular to a longitudinal axis of the reactor 100 (i.e., are not angled upwards toward second end 106 or downwards toward the first end 102). In other embodiments, one or more of the inlet ports 102 are configured to deliver fluid at an upward angle or downward angle (e.g., at an angle opening toward second end 106 or toward first end 102). The angle at which an inlet port is directed can be adjusted to provide one or more desired features to fluid flow within the reactor 100. For example, relatively higher inlet angles can generate a vortex that has a lower angular velocity and which rises to the second end 106 in less relative time. On the other hand, relatively lower inlet angles can generate a vortex that has a higher angular velocity and which rises toward the second end 106 in more relative time. Such angles can advantageously alter the fluid dynamics within the reactor to provide desired pressures, mixing effects, and/or other fluid flow dynamics.
[0020] In embodiments where a plurality of inlet ports 102 are included, the tangentially arranged inlet ports 102 may be configured so that at least one inlet port is asymmetrically aligned with at least one other inlet port to provide beneficial mixing of inflowing reactor fluid in at least the initial inflow region of the reactor 100. Such asymmetrical alignment provides a more turbulent initial flow, allowing advantageous mixing and/or fluid dispersion to occur in at least the initial inflow region (e.g., region near the inlet ports 102) of the reactor 100. Subsequently, as the reactor fluid mixture continues to flow toward the outlet 114 at the second end 106, the fluid will self-organize into a relatively more structured vortical flow beneficial for shearing generated gas bubbles at electrode interfaces, as explained in more detail below.
[0021] The illustrated vortex reactor 100 also includes a bleed opening 110 disposed at or near second end 106. In other embodiments, bleed opening 110 can be disposed at or near first end 104 (e.g., in downflow configurations). In the illustrated embodiment, bleed opening 110 is configured to bleed off air or other gases and/or liquids that may be present in reactor body 108 prior to advancing a reactor fluid mixture into the reactor 100. Bleed opening 110 may be formed as a hole, slit, valve, or other suitable controllable fluid passageway. In some embodiments, the bleed opening 110 is configured as a valve, such as a one-way valve allowing the passage of fluid out of the reactor but not into the reactor.
In some embodiments, the bleed opening 110 is configured as a valve allowing the passage of air or other gas out of the reactor but preventing the passage of liquid out of the reactor.
In some embodiments, the bleed opening 110 is configured as a valve allowing the passage of air or other gas out of the reactor but preventing the passage of liquid out of the reactor.
[0022] The illustrated reactor 100 includes a vortex outlet 114 disposed at the second end 106. In some embodiments, the vortex outlet 114 can extend from second end 106 a distance into reactor body 108 (e.g., as a pipe or conduit extending into reactor body 108).
In the illustrated embodiment, the vortex outlet 114 is substantially aligned with the longitudinal axis of reactor 100, though other embodiments may include an off-center vortex outlet 114.
1() [0023] Preferably, the reactor 100 omits internal baffles and/or other obstructing structures, allowing fluid flow through the reactor to self-organize into a vortex. The illustrated reactor 100 also includes a set of wall ports 130. One or more of such wall ports 130 may be utilized as outlet ports for conducting a portion of the fluid mixture out of the reactor. Alternatively, one or more of such wall ports 130 may be utilized for introducing solids, fluids, or mixtures into the reactor at one or more desired locations along the vortical fluid path within the reactor body 108.
Hydrogen Production [0024] Figures 2 through 4 illustrate various reactor embodiments and corresponding features which may be utilized to generate hydrogen gas via electrolytic splitting of water.
Figure 2 illustrates an embodiment of a vortex reactor 200 including a cathode-influencing magnetic element 240. The cathode-influencing magnetic element 240 may include a single large ring magnet or a plurality of stacked ring magnets which are axially magnetized arranged around the wall of the reactor, radially out from the cathode 244. The magnetic element 240 may be formed as a Neodymium Iron Boron (NeFeB) magnet or other suitably powerful magnet. The magnetic element 240 provides a powerful magnetic field with field lines running parallel to the inner surface of the cylindrically shaped cathode 244. Figure 3 shows the field orientation with respect to a disk of the cathode-influencing magnetic component 240.
[0025] The anode-influencing magnetic component 250 is, in this embodiment, a disk shaped axially magnetized permanent magnet (such as NeFeB Neodymium Iron Boron) mounted under the anode 242. Additionally, other magnets (not shown) might be arranged around the outer surface of the reactor so as to provide additional influence on the anode 242. The anode 242 is preferably made of a non-magnetic (i.e., substantially magnetically transparent) material such as graphite, aluminum, or copper. Thus, the magnetic influence from the magnetic component 250 will pass through the anode 242 and affect the process at the boundary between reactor fluid and the anode 242. Alternately, the anode 242 itself could be magnetic and be made of a conductive material.
[0026] The cathode 244 and anode 242 may be made of similar materials.
In some embodiments, a sacrificial anode such as one coated with and/or including molybdenum may be included. The fluid directed into the reactor through inlets 202 may include sodium bicarbonate or potassium hydroxide or some other electrolyte. In some embodiments, the reactor fluid inherently contains sufficient ionic content to function as a sufficient electrolyte (e.g., certain wastewaters).
1() [0027] As illustrated, the fluid electrolyte enters the reactor from the tangentially arranged inlet ports 202 at the first end 204. The mass of fluid rises in the reactor until it gets to the top of the cathode 244 (which is shaped as an overflow weir) where the fluid mass spills over to the external side of the weir to then exit the reactor via the outlet ports 230 disposed in the outer reactor wall. A power supply 252 supplies power to the reactor .. 200. The cathode 244 is connected to the negative terminal and the anode 242 is connected to the positive terminal.
[0028] During operation, hydrogen gas will be produced at the surface boundary layer between the electrolyte and the cathode 244. Gas bubbles will be sheared away from the cathode surface by the passing vortical motion of the fluid. Hydrogen bubble detachment will also be enhanced by the presence of the magnetic field since Lorentz forces will help to quickly remove the bubbles from the cathode surface soon after they start forming.
[0029] As described herein, one or more magnetic components are arranged to enhance the ability of the passing vortical fluid to shear forming gas bubbles at electrode interfaces by beneficially imparting the Lorentz force. The Lorentz force in the context of hydrolysis is described in the literature, including in: M.-Y. Lin et al., "Effect of Lorrentz force on hydrogen production," and Koza et al., "Hydrogen evolution under the influence of a magnetic field," which are incorporated herein by this reference.
[0030] As a description of the Lorentz force as it is exploited in the present invention, particles carrying charge will be part of the rotating mass of the fluid and as these charged particles move past any given point of the cathode surface, the particles cross the magnetic field at almost a right angle. Since the fluid is a rotating mass that is advancing in the reactor, any given particle would be tracing a helical path and therefore would intersect axially oriented magnetic field lines at something slightly offset from exactly 90 degrees depending on the rate of ascent of the fluid in the reactor. Although one of skill in the art will understand that there are no real "lines" of magnetic force, the term is used herein as a useful abstraction for visualizing the orientation of the magnetic field.
[0031] In preferred embodiments, the magnetic element is configured such that magnetic field lines are substantially parallel to the axis of the reactor. In this manner, through action of the Lorentz force, the charged particles being forced through the magnetic field will have a force imposed upon them that is perpendicular to both the direction of motion of the particle and the magnetic field lines. The fluid flow direction and magnetic element positioning may then be configured such that the resulting Lorentz force is directed radially inwards. In alternative embodiments, the magnetic element may be altered to provide a magnetic field that is normal to the axis of the reactor. Some embodiments may include an array of magnets arranged to provide an alternating magnetic field.
[0032] The cathode-influencing magnetic element 240 is positioned so that the north and south poles of the magnet impart a Lorentz force directed radially inward.
According to the Right-Hand Rule, the direction of the Lorentz force will be perpendicular to both the direction of the magnetic field and the direction of conventional current flow. The radially inward directed Lorentz force in addition to centrifugal and centripetal forces will assist in detaching smaller bubbles from the surface of the porous element.
[0033] Once the hydrogen bubbles are in the electrolyte solution, they will move rapidly to the axis of rotation where they will coalesce and rise as a column of gas to the gas cavity at the second end 206 and exit the system via the hydrogen exit pipe 248 which in the illustration is shown exiting laterally from the second end 206. A
suitable demister could be installed above the fluid level in order to minimize the amount of water carryover with the hydrogen gas.
[0034] Oxygen gas will be produced at the surface interface between the electrolyte and the anode 242. Gas bubbles will be sheared away from the anode surface by the passing fluid in motion. Once the bubbles of oxygen are in the electrolyte solution, centrifugal and centripetal forces will move them rapidly radially inward to the axis where they will rise to the guide cone 254 which is attached to the vertical exit pipe 246 disposed at the second end 206. The liquid level of the electrolyte inside the guide cone 254 and exit pipe 246 can be maintained at a desired level by a suitable control system. For example, some embodiments may be configured to control the backpressure of the oxygen to thereby control the liquid height within the guide cone 254 and exit pipe 246.
[0035] Figure 4 illustrates an alternative embodiment of an electrolysis reactor 300.
The reactor 300 shares many features with the above-described electrolysis reactor 200, and like components are like numbered. The embodiment of Figure 4 includes a tubular magnetic element 340 formed as an outer portion of the reactor coinciding with at least a portion of both the anode 342 and cathode 344. In this embodiment, the lower part of the inner wall of the reactor is the anode 342 and the upper part of the inner wall is the cathode 344. The magnetic element 340 may be a permanent magnet or a stack of ring magnets cylindrically arranged to form a single functioning magnet, for example. In the illustrated configuration, the north pole of the magnet is indicated by 360 and the south 1() pole of the magnet is indicated by 362, though these positions may be reversed in alternative embodiments, such as in implementations where the rotational direction of the fluid is also reversed.
[0036] In operation, an electrolytic fluid enters the reactor from the tangentially arranged inlets 302 at the first end of the reactor. The mass of fluid rises in the reactor until it gets to the overflow weir (the top edge of the cathode 344) where the fluid mass spills over into the space between the outer surface of the cathode 344 and the inner surface of the magnetic element 340. The fluid then exits the reactor via the outlet ports 330 disposed in the outer reactor wall.
[0037] Hydrogen gas will be produced at the surface boundary layer between the electrolyte and the cathode 344. Gas bubbles will be sheared away from the cathode surface by the passing fluid in motion. Hydrogen bubble detachment will also be enhanced by the presence of the magnetic field, since Lorentz forces directed radially inwards will help to quickly remove the bubbles from the cathode surface soon after they start forming.
[0038] Once the hydrogen bubbles are in the electrolyte solution, they will move rapidly to the axis of rotation where they will coalesce and rise as a column of gas to the gas cavity at the second end 306 and exit the system via the exit pipe 348 which in the illustration is shown exiting laterally at the second end 306 of the reactor.
A suitable demister could be installed above the fluid level in order to minimize the amount of water carryover with the hydrogen gas. Oxygen gas will be produced at the surface interface between the electrolyte and the anode 342. Gas bubbles will be sheared away from the anode surface by the passing fluid in motion and collected in the exit pipe 346.
[0039] The magnetic element 340 and direction of flow of the electrolyte are configured such that the resulting Lorentz force exerted on charged particles will be directed radially inward toward the axis. Due to the geometry of the reactor 300, the Lorentz force will be substantially the same at any point on the surface of both the cathode 344 and the anode 342.
[0040] The cathode 344 and/or anode 342 may be formed as an integral piece of material or as a series of stacked rings. The inner surfaces of the cathode 344 and/or anode 5 342 may also be textured so as to increase the surface area for gas bubble nucleation sites.
For example, grooves, divots, pores, or the like may be formed in the inner surface of the electrode(s). Additionally, or alternatively, in embodiments utilizing a series of stacked rings, the rings may have varying inner diameters to provide greater surface area for gas bubble nucleation sites. These same surface features and/or structural components may 1() also be utilized in the embodiment of Figure 2.
[0041] The present disclosure may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the disclosure is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
In the illustrated embodiment, the vortex outlet 114 is substantially aligned with the longitudinal axis of reactor 100, though other embodiments may include an off-center vortex outlet 114.
1() [0023] Preferably, the reactor 100 omits internal baffles and/or other obstructing structures, allowing fluid flow through the reactor to self-organize into a vortex. The illustrated reactor 100 also includes a set of wall ports 130. One or more of such wall ports 130 may be utilized as outlet ports for conducting a portion of the fluid mixture out of the reactor. Alternatively, one or more of such wall ports 130 may be utilized for introducing solids, fluids, or mixtures into the reactor at one or more desired locations along the vortical fluid path within the reactor body 108.
Hydrogen Production [0024] Figures 2 through 4 illustrate various reactor embodiments and corresponding features which may be utilized to generate hydrogen gas via electrolytic splitting of water.
Figure 2 illustrates an embodiment of a vortex reactor 200 including a cathode-influencing magnetic element 240. The cathode-influencing magnetic element 240 may include a single large ring magnet or a plurality of stacked ring magnets which are axially magnetized arranged around the wall of the reactor, radially out from the cathode 244. The magnetic element 240 may be formed as a Neodymium Iron Boron (NeFeB) magnet or other suitably powerful magnet. The magnetic element 240 provides a powerful magnetic field with field lines running parallel to the inner surface of the cylindrically shaped cathode 244. Figure 3 shows the field orientation with respect to a disk of the cathode-influencing magnetic component 240.
[0025] The anode-influencing magnetic component 250 is, in this embodiment, a disk shaped axially magnetized permanent magnet (such as NeFeB Neodymium Iron Boron) mounted under the anode 242. Additionally, other magnets (not shown) might be arranged around the outer surface of the reactor so as to provide additional influence on the anode 242. The anode 242 is preferably made of a non-magnetic (i.e., substantially magnetically transparent) material such as graphite, aluminum, or copper. Thus, the magnetic influence from the magnetic component 250 will pass through the anode 242 and affect the process at the boundary between reactor fluid and the anode 242. Alternately, the anode 242 itself could be magnetic and be made of a conductive material.
[0026] The cathode 244 and anode 242 may be made of similar materials.
In some embodiments, a sacrificial anode such as one coated with and/or including molybdenum may be included. The fluid directed into the reactor through inlets 202 may include sodium bicarbonate or potassium hydroxide or some other electrolyte. In some embodiments, the reactor fluid inherently contains sufficient ionic content to function as a sufficient electrolyte (e.g., certain wastewaters).
1() [0027] As illustrated, the fluid electrolyte enters the reactor from the tangentially arranged inlet ports 202 at the first end 204. The mass of fluid rises in the reactor until it gets to the top of the cathode 244 (which is shaped as an overflow weir) where the fluid mass spills over to the external side of the weir to then exit the reactor via the outlet ports 230 disposed in the outer reactor wall. A power supply 252 supplies power to the reactor .. 200. The cathode 244 is connected to the negative terminal and the anode 242 is connected to the positive terminal.
[0028] During operation, hydrogen gas will be produced at the surface boundary layer between the electrolyte and the cathode 244. Gas bubbles will be sheared away from the cathode surface by the passing vortical motion of the fluid. Hydrogen bubble detachment will also be enhanced by the presence of the magnetic field since Lorentz forces will help to quickly remove the bubbles from the cathode surface soon after they start forming.
[0029] As described herein, one or more magnetic components are arranged to enhance the ability of the passing vortical fluid to shear forming gas bubbles at electrode interfaces by beneficially imparting the Lorentz force. The Lorentz force in the context of hydrolysis is described in the literature, including in: M.-Y. Lin et al., "Effect of Lorrentz force on hydrogen production," and Koza et al., "Hydrogen evolution under the influence of a magnetic field," which are incorporated herein by this reference.
[0030] As a description of the Lorentz force as it is exploited in the present invention, particles carrying charge will be part of the rotating mass of the fluid and as these charged particles move past any given point of the cathode surface, the particles cross the magnetic field at almost a right angle. Since the fluid is a rotating mass that is advancing in the reactor, any given particle would be tracing a helical path and therefore would intersect axially oriented magnetic field lines at something slightly offset from exactly 90 degrees depending on the rate of ascent of the fluid in the reactor. Although one of skill in the art will understand that there are no real "lines" of magnetic force, the term is used herein as a useful abstraction for visualizing the orientation of the magnetic field.
[0031] In preferred embodiments, the magnetic element is configured such that magnetic field lines are substantially parallel to the axis of the reactor. In this manner, through action of the Lorentz force, the charged particles being forced through the magnetic field will have a force imposed upon them that is perpendicular to both the direction of motion of the particle and the magnetic field lines. The fluid flow direction and magnetic element positioning may then be configured such that the resulting Lorentz force is directed radially inwards. In alternative embodiments, the magnetic element may be altered to provide a magnetic field that is normal to the axis of the reactor. Some embodiments may include an array of magnets arranged to provide an alternating magnetic field.
[0032] The cathode-influencing magnetic element 240 is positioned so that the north and south poles of the magnet impart a Lorentz force directed radially inward.
According to the Right-Hand Rule, the direction of the Lorentz force will be perpendicular to both the direction of the magnetic field and the direction of conventional current flow. The radially inward directed Lorentz force in addition to centrifugal and centripetal forces will assist in detaching smaller bubbles from the surface of the porous element.
[0033] Once the hydrogen bubbles are in the electrolyte solution, they will move rapidly to the axis of rotation where they will coalesce and rise as a column of gas to the gas cavity at the second end 206 and exit the system via the hydrogen exit pipe 248 which in the illustration is shown exiting laterally from the second end 206. A
suitable demister could be installed above the fluid level in order to minimize the amount of water carryover with the hydrogen gas.
[0034] Oxygen gas will be produced at the surface interface between the electrolyte and the anode 242. Gas bubbles will be sheared away from the anode surface by the passing fluid in motion. Once the bubbles of oxygen are in the electrolyte solution, centrifugal and centripetal forces will move them rapidly radially inward to the axis where they will rise to the guide cone 254 which is attached to the vertical exit pipe 246 disposed at the second end 206. The liquid level of the electrolyte inside the guide cone 254 and exit pipe 246 can be maintained at a desired level by a suitable control system. For example, some embodiments may be configured to control the backpressure of the oxygen to thereby control the liquid height within the guide cone 254 and exit pipe 246.
[0035] Figure 4 illustrates an alternative embodiment of an electrolysis reactor 300.
The reactor 300 shares many features with the above-described electrolysis reactor 200, and like components are like numbered. The embodiment of Figure 4 includes a tubular magnetic element 340 formed as an outer portion of the reactor coinciding with at least a portion of both the anode 342 and cathode 344. In this embodiment, the lower part of the inner wall of the reactor is the anode 342 and the upper part of the inner wall is the cathode 344. The magnetic element 340 may be a permanent magnet or a stack of ring magnets cylindrically arranged to form a single functioning magnet, for example. In the illustrated configuration, the north pole of the magnet is indicated by 360 and the south 1() pole of the magnet is indicated by 362, though these positions may be reversed in alternative embodiments, such as in implementations where the rotational direction of the fluid is also reversed.
[0036] In operation, an electrolytic fluid enters the reactor from the tangentially arranged inlets 302 at the first end of the reactor. The mass of fluid rises in the reactor until it gets to the overflow weir (the top edge of the cathode 344) where the fluid mass spills over into the space between the outer surface of the cathode 344 and the inner surface of the magnetic element 340. The fluid then exits the reactor via the outlet ports 330 disposed in the outer reactor wall.
[0037] Hydrogen gas will be produced at the surface boundary layer between the electrolyte and the cathode 344. Gas bubbles will be sheared away from the cathode surface by the passing fluid in motion. Hydrogen bubble detachment will also be enhanced by the presence of the magnetic field, since Lorentz forces directed radially inwards will help to quickly remove the bubbles from the cathode surface soon after they start forming.
[0038] Once the hydrogen bubbles are in the electrolyte solution, they will move rapidly to the axis of rotation where they will coalesce and rise as a column of gas to the gas cavity at the second end 306 and exit the system via the exit pipe 348 which in the illustration is shown exiting laterally at the second end 306 of the reactor.
A suitable demister could be installed above the fluid level in order to minimize the amount of water carryover with the hydrogen gas. Oxygen gas will be produced at the surface interface between the electrolyte and the anode 342. Gas bubbles will be sheared away from the anode surface by the passing fluid in motion and collected in the exit pipe 346.
[0039] The magnetic element 340 and direction of flow of the electrolyte are configured such that the resulting Lorentz force exerted on charged particles will be directed radially inward toward the axis. Due to the geometry of the reactor 300, the Lorentz force will be substantially the same at any point on the surface of both the cathode 344 and the anode 342.
[0040] The cathode 344 and/or anode 342 may be formed as an integral piece of material or as a series of stacked rings. The inner surfaces of the cathode 344 and/or anode 5 342 may also be textured so as to increase the surface area for gas bubble nucleation sites.
For example, grooves, divots, pores, or the like may be formed in the inner surface of the electrode(s). Additionally, or alternatively, in embodiments utilizing a series of stacked rings, the rings may have varying inner diameters to provide greater surface area for gas bubble nucleation sites. These same surface features and/or structural components may 1() also be utilized in the embodiment of Figure 2.
[0041] The present disclosure may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the disclosure is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (20)
1. A vortex reactor for generating hydrogen gas through electrolysis of water, comprising:
a reactor body having a first end and a second end;
one or more inlet ports disposed at or near the first end and configured to direct an electrolytic fluid into the reactor body so that the fluid moves toward the second end, the one or more inlet ports being tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end;
an anode disposed at the first end; and a tubular cathode disposed within the reactor body between the first and second ends, the cathode disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end, wherein power supplied to the anode and cathode cause hydrogen gas to form at the cathode and oxygen gas to form at the anode, the vortical path of the moving fluid shearing the forming gases to enable collection of the gases.
a reactor body having a first end and a second end;
one or more inlet ports disposed at or near the first end and configured to direct an electrolytic fluid into the reactor body so that the fluid moves toward the second end, the one or more inlet ports being tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end;
an anode disposed at the first end; and a tubular cathode disposed within the reactor body between the first and second ends, the cathode disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end, wherein power supplied to the anode and cathode cause hydrogen gas to form at the cathode and oxygen gas to form at the anode, the vortical path of the moving fluid shearing the forming gases to enable collection of the gases.
2. The reactor of claim 1, wherein the cathode is configured as a weir having an upper rim positioned below the second end of the reactor.
3. The reactor of claim 1 or claim 2, wherein the anode is configured as a disk disposed at the first end of the reactor.
4. The reactor of claim 1 or claim 2, wherein the anode is configured as a tubular anode extending from the first end of the reactor and the anode being disposed so that the vortical path of the fluid contacts an inner surface of the anode as the fluid moves toward the second end.
5. The reactor of any one of claims 1 through 4, further comprising one or more magnetic elements positioned with respect to the anode and/or cathode to impart a radially inward directed Lorentz force.
6. The reactor of claim 5, wherein the one or more magnetic elements include one or more tube or ring-shaped magnets surrounding the anode and/or cathode.
7. The reactor of any one of claims 1 through 6, further comprising a guide cone disposed along the central axis of the reactor body and positioned above the anode to collect oxygen gas generated at the anode.
8. The reactor of claim 7, further comprising an oxygen exit pipe coupled to the guide cone and extending from the guide cone out of the reactor to route collected oxygen out of the reactor.
9. The reactor of any one of claims 1 through 8, further comprising a hydrogen exit pipe disposed above the cathode.
10. The reactor of any one of claims 1 through 9, wherein the anode and/or cathode includes a textured inner surface.
11. The reactor of any one of claims 1 through 10, wherein the anode and/or cathode includes a series of stacked electrode rings.
12. The reactor of claim 11, wherein the stacked electrode rings include rings or varying inner diameter.
13. The reactor of any one of claims 1 through 12, wherein the cathode has a weir structure enabling fluid to pass over the cathode to an annular space disposed between an external side of the cathode and an inner surface of a reactor wall, the reactor further comprising one or more wall outlets to pass fluid within the annular space out of the reactor.
14. A vortex reactor for generating hydrogen gas through electrolysis of water, comprising:
a reactor body having a first end and a second end;
one or more inlet ports disposed at or near the first end and configured to direct an electrolytic fluid into the reactor body so that the fluid moves toward the second end, the one or more inlet ports being tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end;
a tubular anode disposed at the first end and extending from the first end so that the vortical path of the fluid contacts an inner surface of the anode as the fluid moves toward the second end;
a tubular cathode disposed within the reactor body between the anode and the second end, the cathode being disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end;
an oxygen exit conduit extending from a position above the anode to a position outside of the reactor; and a hydrogen exit conduit extending from a position above the cathode to a position outside of the reactor, wherein power supplied to the anode and cathode cause hydrogen gas to form at the cathode and oxygen gas to form at the anode, the vortical path of the moving fluid shearing the forming gases to enable collection of the gases.
a reactor body having a first end and a second end;
one or more inlet ports disposed at or near the first end and configured to direct an electrolytic fluid into the reactor body so that the fluid moves toward the second end, the one or more inlet ports being tangentially oriented with respect to an inner surface of the reactor body so that the fluid directed into the reactor body follows a vortical path as the fluid moves toward the second end;
a tubular anode disposed at the first end and extending from the first end so that the vortical path of the fluid contacts an inner surface of the anode as the fluid moves toward the second end;
a tubular cathode disposed within the reactor body between the anode and the second end, the cathode being disposed so that the vortical path of the fluid contacts an inner surface of the cathode as the fluid moves toward the second end;
an oxygen exit conduit extending from a position above the anode to a position outside of the reactor; and a hydrogen exit conduit extending from a position above the cathode to a position outside of the reactor, wherein power supplied to the anode and cathode cause hydrogen gas to form at the cathode and oxygen gas to form at the anode, the vortical path of the moving fluid shearing the forming gases to enable collection of the gases.
15. The reactor of claim 14, further comprising a tubular magnetic element having an inner diameter larger than the outer diameter of the tubular anode and cathode, the tubular magnetic element circumscribing the anode and cathode.
16. The reactor of claim 14 or claim 15, wherein the tubular magnetic element and the cathode define an annular space between an inner surface of the tubular magnetic element and an outer surface of the cathode.
17. The reactor of claim 16, wherein the cathode includes an upper rim configured to function as a weir to enable fluid to pass over the upper rim and into the annular space, the reactor further comprising one or more wall outlets to pass fluid within the annular space out of the reactor.
18. The reactor of any one of claims 15 through 17, wherein the tubular magnetic element forms at least a portion of an outer wall of the reactor.
19. A method of generating hydrogen gas, comprising:
providing a vortex reactor as in any one of claims 1 through 18;
supplying power to the anode and cathode of the vortex reactor;
directing an electrolytic fluid to the vortex reactor to induce vortical motion of the fluid as it passes through the vortex reactor; and collecting hydrogen gas as it is generated at the cathode and sheared from an inner surface of the cathode by the vortical motion of the fluid.
providing a vortex reactor as in any one of claims 1 through 18;
supplying power to the anode and cathode of the vortex reactor;
directing an electrolytic fluid to the vortex reactor to induce vortical motion of the fluid as it passes through the vortex reactor; and collecting hydrogen gas as it is generated at the cathode and sheared from an inner surface of the cathode by the vortical motion of the fluid.
20. The method of claim 19, further comprising collecting oxygen gas as it is generated at the anode and sheared away from a surface of the anode by the vortical motion of the fluid.
Applications Claiming Priority (3)
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| US201662429000P | 2016-12-01 | 2016-12-01 | |
| US62/429,000 | 2016-12-01 | ||
| PCT/IB2017/057583 WO2018100554A1 (en) | 2016-12-01 | 2017-12-01 | Apparatus and method for generating hydrogen by electrolysis |
Publications (1)
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|---|---|
| CA3045086A1 true CA3045086A1 (en) | 2018-06-07 |
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| CA3045086A Abandoned CA3045086A1 (en) | 2016-12-01 | 2017-12-01 | Apparatus and method for generating hydrogen by electrolysis |
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| US (1) | US20200024756A1 (en) |
| EP (1) | EP3548184A4 (en) |
| CA (1) | CA3045086A1 (en) |
| WO (1) | WO2018100554A1 (en) |
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| EP3752452A1 (en) * | 2018-02-14 | 2020-12-23 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. | Enhancing photocatalytic water splitting efficiency of weyl semimetals by a magnetic field |
| CZ2019276A3 (en) * | 2019-05-03 | 2020-07-08 | H2 Solution s.r.o. | Gas production reactor |
| WO2021247385A1 (en) * | 2020-06-02 | 2021-12-09 | The Regents Of The University Of Colorado, A Body Corporate | Systems and methods for magnetic buoyancy enhanced electrolysis and boiling systems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS52104468A (en) * | 1976-02-28 | 1977-09-01 | Shigeta Hasebe | Liquid decomposition apparatus |
| US7622693B2 (en) * | 2001-07-16 | 2009-11-24 | Foret Plasma Labs, Llc | Plasma whirl reactor apparatus and methods of use |
| AT412972B (en) * | 2003-10-14 | 2005-09-26 | Bierbaumer Hans Peter Dr | DEVICE FOR CONVERTING ENERGY |
| RU2346084C2 (en) * | 2007-03-27 | 2009-02-10 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Дагестанский Государственный Технический Университет" (Дгту) | Device for heat energy, hydrogen and oxygen production |
| CN101928951A (en) * | 2007-07-03 | 2010-12-29 | 胡松青 | Electromagnetic high-temperature evaporation electrolysis hydrogen production device |
| EP2252391B1 (en) * | 2008-02-08 | 2013-05-22 | PURAC Biochem BV | Vortex mixer and method of obtaining a supersaturated solution or slurry |
| CN101519786A (en) * | 2008-02-29 | 2009-09-02 | 孔庆楠 | New hydrogen production method |
| RU2374361C1 (en) * | 2008-05-04 | 2009-11-27 | Государственное Образовательное Учреждение Высшего Профессионального Образования "Дагестанский Государственный Технический Университет" (Дгту) | Device for energy transformation |
| AT508813B1 (en) * | 2009-09-29 | 2011-06-15 | New Energy Ag | ELECTROLYTIC REACTION SYSTEM FOR GENERATING GASEOUS HYDROGEN AND OXYGEN |
| TWI645910B (en) * | 2013-07-10 | 2019-01-01 | 曹艷環 | Vortex reactor |
-
2017
- 2017-12-01 EP EP17877353.7A patent/EP3548184A4/en not_active Withdrawn
- 2017-12-01 WO PCT/IB2017/057583 patent/WO2018100554A1/en unknown
- 2017-12-01 US US16/465,651 patent/US20200024756A1/en not_active Abandoned
- 2017-12-01 CA CA3045086A patent/CA3045086A1/en not_active Abandoned
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| EP3548184A4 (en) | 2020-05-06 |
| EP3548184A1 (en) | 2019-10-09 |
| US20200024756A1 (en) | 2020-01-23 |
| WO2018100554A1 (en) | 2018-06-07 |
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