Non-pure water hydrogen and oxygen production electrolytic gas generation equipment

Abstract

The invention provides non-pure water hydrogen and oxygen production electrolytic gas generation equipment, which comprises a plurality of annular pole frames, a plurality of electrolytic gas generation devices, a plurality of electrolytic gas generation devices and a plurality of electrolytic gas generation devices, wherein a positioning and clamping structure is arranged on the outer side wall of each annular pole frame; a sealing gasket is arranged between every two adjacent annular pole frames; the two sides of the annular pole frame are provided with a fixing ring and an annular groove respectively. A gas-liquid flow channel and an electrolyte flow channel are arranged on the annular electrode frame, the gas-liquid flow channel and the electrolyte flow channel are oppositely arranged along the radial direction of the annular electrode frame, the gas-liquid flow channel consists of a plurality of gas-liquid hole channels which are distributed in a fan shape, an inner hole of the annular electrode frame is an electrolysis small chamber, the gas-liquid hole channels are conical, and the thin ends of the gas-liquid hole channels are communicated with the electrolysis small chamber; a selective ion exchange membrane is arranged in the small electrolysis chamber, electrodes are arranged on the two sides of the selective ion exchange membrane, and a main pole plate is arranged between the electrodes between the adjacent annular pole frames. The problems of corrosion, positioning dislocation, low electrolysis efficiency and non-uniform electrolyte distribution of non-pure water hydrogen and oxygen electrolysis gas generation equipment are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of gas reaction devices, specifically relating to a non-pure water hydrogen production and oxygen electrolysis gas generation equipment. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Hydrogen and oxygen electrolysis gas generation equipment, as important industrial gas production devices, is increasingly in demand for use in non-pure water environments. However, the electrolyte solutions in such environments are complex in composition, typically containing high concentrations of corrosive chloride ions, bromide ions, calcium and magnesium ions, as well as microorganisms, posing a severe challenge to the core structural materials of the equipment. Currently, most commercially available electrolytic cell frames and main plates are made of ordinary low-carbon steel. In chloride-rich electrolytes, this material rapidly undergoes severe electrochemical corrosion, manifesting not only as uniform corrosion but, more critically, as unpredictable and uncontrollable intergranular corrosion and stress corrosion cracking. These corrosion mechanisms lead to the peeling of the conductive coating on the main plate, loss of the mechanical properties of the supporting structure, and penetrating damage to the frame itself.

[0004] Existing equipment commonly uses internal positioning holes and pins to stack and align multiple electrolysis chambers in its mechanical structure and assembly process. This method, where positioning holes are directly machined inside the electrode frame, increases the risk of communication with the internal flow channels, creating potential leakage points. Furthermore, due to the limited length of the positioning pins, they must be pulled out and reinserted after a certain number of chambers have been stacked, a cumbersome process requiring lifting equipment and resulting in low assembly efficiency. Repeated pulling inevitably leads to wear on the pins and holes, and accumulated errors cause gradual misalignment between the chambers. This misalignment is particularly dangerous during long-term operation, as the weight of each chamber and internal pressure can easily cause a trapezoidal deformation (narrower at the top and wider at the bottom), generating continuous shear stress on the sealing gaskets, ultimately leading to seal failure and electrolyte leakage, severely impacting the long-term operational stability and reliability of the equipment. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a non-pure water hydrogen and oxygen electrolysis gas generation device, which solves the problems of corrosion, misalignment, low electrolysis efficiency, and uneven electrolyte distribution in existing non-pure water hydrogen and oxygen electrolysis gas generation devices.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: This invention provides a non-pure water hydrogen / oxygen electrolysis gas generator, comprising: multiple annular electrode frames, each with a positioning and clamping structure on its outer side wall; a sealing gasket between adjacent annular electrode frames; a fixing ring on one side of each annular electrode frame and an annular groove on the other side; gas-liquid channels and electrolyte channels arranged radially opposite each other on the annular electrode frames, each gas-liquid channel consisting of multiple gas-liquid pores arranged in a fan shape; an inner hole of each annular electrode frame forming an electrolysis chamber, the gas-liquid pores being conical with their narrow ends communicating with the electrolysis chamber; a selective ion exchange membrane disposed within the electrolysis chamber, electrodes disposed on both sides of the selective ion exchange membrane, and a main electrode plate disposed between the electrodes of adjacent annular electrode frames.

[0007] As a further implementation, the radial dimension of the fixing ring is smaller than the radial dimension of the annular groove; the difference between the axial dimension of the fixing ring and the dimension of the sealing gasket is smaller than the axial dimension of the annular groove.

[0008] As a further implementation, the electrolyte flow channel is composed of multiple electrolyte channels, which are distributed in a fan shape, and the electrolyte channels are conical with their thicker ends close to the inner circle of the annular electrode frame.

[0009] As a further implementation, the annular electrode frame is provided with a gas-liquid outlet and an electrolyte inlet; the gas-liquid outlet is connected to the gas-liquid flow channel, and the electrolyte inlet is connected to the electrolyte flow channel.

[0010] As a further implementation, there are two gas-liquid outlets and two gas-liquid channels, and the two gas-liquid outlets are arranged adjacent to each other; there are two electrolyte inlets and two electrolyte channels, and the two electrolyte outlets are arranged adjacent to each other.

[0011] As a further implementation, the positioning and clamping structure includes a mounting base and a mounting positioning rod. There are two mounting bases, which are disposed opposite to each other on the outer circumferential side of the annular pole frame. There are two mounting positioning rods, each of which passes through one of the mounting bases on the plurality of annular pole frames.

[0012] As a further implementation, the annular pole frame is injection molded and processed from a corrosion-resistant and rigid rubber material.

[0013] As a further implementation, the sealing gasket is made of an engineering rubber material that is resistant to oil, acids and alkalis and high temperatures.

[0014] As a further implementation, selective ion exchange membranes are composites made of polyphenylene sulfide matrix material coated with a special medium, which have resistance to contamination by impurity ions and microorganisms and ion conduction performance at high current densities.

[0015] As a further implementation, the electrode consists of an anode and a cathode, and the main electrode plate is a titanium substrate with a high-entropy conductive coating.

[0016] Compared with the prior art, the advantages and positive effects of this invention are: The outer wall of the annular electrode frame of this invention is provided with a positioning and clamping structure, which effectively prevents the electrolysis chambers from misaligning due to pressure fluctuations or vibrations during operation, and avoids the shear force generated by misalignment from tearing the sealing gasket, greatly improving the sealing reliability and service life. Sealing gaskets are provided between adjacent annular electrode frames to seal the electrolysis chambers. A fixing ring is provided on one side of the annular electrode frame, and an annular groove is provided on the other side. The annular groove and fixing ring assist the positioning and clamping mechanism in fixing the annular electrode frame, preventing the chambers from sagging due to gravity during long-term operation, resulting in an inward-curving top and outward-curving bottom. The phenomenon of tension causes leakage of electrolyte under internal pressure; the annular electrode frame is provided with gas-liquid flow channels and electrolyte flow channels, which are arranged opposite to each other along the radial direction of the annular electrode frame. The gas-liquid flow channels are composed of multiple gas-liquid channels, which are distributed in a fan shape. The inner hole of the annular electrode frame is an electrolysis chamber. The gas-liquid channels are conical and the narrow end is connected to the electrolysis chamber. The flow rate can be effectively reduced by the gas-liquid channels with gradually increasing diameter, which is conducive to gas-liquid separation; a selective ion exchange membrane is provided in the electrolysis chamber. Electrodes are provided on both sides of the selective ion exchange membrane, and a main electrode plate is provided between the electrodes of adjacent annular electrode frames.

[0017] In this invention, the gas-liquid outlet is connected to the gas-liquid flow channel, and the electrolyte inlet is also connected to the electrolyte flow channel. The electrolyte flow channel consists of multiple electrolyte channels, which collect the gas and liquid from each electrolysis chamber and connect to the external circulation pipe. It also carries away the heat generated in the electrolysis chamber, ensuring that the electrolysis reaction occurs within a specified temperature range. The multiple electrolyte channels are arranged in a fan shape, with the conical channel having its wider end close to the inner circle of the annular electrode frame. This allows the electrolyte from the electrolyte inlet to be distributed into the electrolysis chamber, replenishing the water consumed during electrolysis and the electrolyte required for ion migration. By changing the cross-sectional area of ​​the flow channel, the electrolyte is guided to be distributed more evenly throughout the electrode reaction area, reducing dead zones. Shear force is used to help peel off bubbles attached to the electrode surface, reducing the coverage of active sites by bubbles, lowering bubble resistance, and promoting the renewal of reactants and bubble removal on the electrode surface. This results in a more uniform current density distribution, thereby improving electrolysis efficiency and potentially reducing energy consumption. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is an axial view of the non-pure water hydrogen production and oxygen electrolysis gas generator of the present invention; Figure 2 This is the invention Figure 1 AA section diagram; Figure 3 This is the invention Figure 2 Enlarged view of section B in the middle; Figure 4 This is an axial view of the annular pole frame of the present invention; Figure 5 This is the invention Figure 4 C-section view; Figure 6 This is the invention Figure 5 Enlarged view of a section at point D; Figure 7 This is a structural diagram of the electrolyte flow channel and electrolyte inlet of the present invention.

[0020] In the diagram: 1. Mounting base; 2. Gas-liquid outlet; 3. Gas-liquid flow channel; 4. Electrolyte flow channel; 5. Electrolyte inlet; 6. Annular electrode frame; 7. Sealing gasket; 8. Selective ion exchange membrane; 9. Electrode; 10. Main electrode plate; 11. Mounting positioning rod. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment provides a non-pure water hydrogen production and oxygen electrolysis gas generation device, such as... Figures 1-7As shown, it includes: multiple annular pole frames 6, each with a positioning and clamping structure on its outer wall to effectively prevent misalignment of the electrolysis chambers due to pressure fluctuations or vibrations during operation, and to avoid tearing of the sealing gaskets 7 by the shear force generated by misalignment, thus greatly improving sealing reliability and lifespan; sealing gaskets 7 are provided between adjacent annular pole frames 6 for sealing the electrolysis chambers; a fixing ring is provided on one side of each annular pole frame 6, and an annular groove is provided on the other side. The annular groove and the fixing ring assist the positioning and clamping mechanism in fixing the annular pole frames 6, preventing the chambers from sagging due to gravity during long-term operation, thus preventing the top from contracting inward and the bottom from expanding outward. This causes leakage of the electrolyte under internal pressure. The annular electrode frame 6 is provided with a gas-liquid flow channel 3 and an electrolyte flow channel 4, which are arranged radially opposite to each other along the annular electrode frame 6. The gas-liquid flow channel 3 is composed of multiple gas-liquid channels distributed in a fan shape. The inner hole of the annular electrode frame 6 is an electrolysis chamber. The gas-liquid channels are conical with their narrow ends connected to the electrolysis chamber. The flow rate can be effectively reduced through the gradually increasing diameter gas-liquid channels, which is beneficial for gas-liquid separation. A selective ion exchange membrane 8 is provided in the electrolysis chamber. Electrodes 9 are provided on both sides of the selective ion exchange membrane 8, and a main electrode plate 10 is provided between the electrodes 9 of adjacent annular electrode frames 6.

[0023] As a further implementation, the radial dimension of the fixing ring is smaller than the radial dimension of the annular groove; the difference between the axial dimension of the fixing ring and the dimension of the sealing gasket 7 is smaller than the axial dimension of the annular groove, which can effectively ensure that the two adjacent annular pole frames 6 can clamp the middle sealing gasket 7.

[0024] As a further implementation, the annular electrode frame 6 is provided with a gas-liquid outlet 2 and an electrolyte inlet 5; the gas-liquid outlet 2 is connected to the gas-liquid flow channel 3, and the electrolyte inlet 5 is connected to the electrolyte flow channel 4. The electrolyte flow channel 4 is composed of multiple electrolyte channels, which are used to collect the gas and liquid from each electrolysis chamber and connect to the external circulation pipe. It also serves to remove the heat generated in the electrolysis chamber from the electrolysis equipment, ensuring that the electrolysis reaction occurs within the specified temperature range. The multiple electrolyte channels are arranged in a fan shape, and the electrolyte channels are conical with their thicker ends close to the inner circle of the annular electrode frame 6. This allows the electrolyte from the electrolyte inlet 5 to be distributed into the electrolysis chamber, timely replenishing the water consumed by electrolysis and the electrolyte required for ion migration. The electrolyte flow channel 4 is designed with a relatively large conical shape at the outer edge and a relatively small shape in the middle. By changing the cross-sectional area of ​​the flow channel, the electrolyte is guided to be distributed more evenly throughout the reaction area of ​​the electrode 9, reducing the flow dead zone. Shear force is used to help peel off the bubbles attached to the surface of the electrode 9, reducing the coverage of the active sites of the electrode 9 by the bubbles, reducing the bubble resistance, and promoting the renewal of reactants and the removal of bubbles on the surface of the electrode 9, making the current density distribution more uniform, thereby improving the electrolysis efficiency and potentially reducing energy consumption.

[0025] As a further implementation, there are two gas-liquid outlets 2 and two gas-liquid channels 3, and the two gas-liquid outlets 2 are arranged adjacent to each other; there are two electrolyte inlets 5 and two electrolyte channels 4, and the two electrolyte outlets are arranged adjacent to each other.

[0026] As a further implementation, the positioning and clamping structure includes a mounting base 1 and a mounting positioning rod 11. There are two mounting bases 1, which are arranged opposite each other on the outer circumferential side of the annular pole frame 6. There are two mounting positioning rods 11, each of which passes through one of the mounting bases 1 on the multiple annular pole frames 6. During assembly, positioning rods of sufficient length are used for positioning to avoid inaccurate positioning and misalignment of the chambers caused by multiple spot checks. This allows for a more intuitive observation of the consistency of the chambers. At the same time, the positioning rods also serve to support each chamber, preventing the chambers from sagging due to gravity during long-term operation, which would cause the upper part to contract inward and the lower part to expand outward, resulting in leakage of electrolyte under internal pressure.

[0027] As a further implementation, the annular electrode frame 6 is injection molded and processed from a corrosion-resistant and rigid rubber material. It exhibits excellent resistance to acids, alkalis, chloride ions, bromide ions, and salt spray, preventing intergranular corrosion, stress corrosion, and other mechanisms that could lead to seal penetration damage, gas-liquid leakage, corrosion deposits blocking gas-liquid channels, short-circuit electrolysis in the equipment chambers, and hydrogen-oxygen inter-transfer due to corrosion perforation, thus preventing safety accidents. The annular electrode frame 6 supports the sealing gasket 7, selective ion exchange membrane 8, electrode 9, and main electrode plate 10, and together with the sealing gasket 7, seals each chamber to prevent gas-liquid leakage. The annular electrode frame 6, in conjunction with the positioning and clamping structure, ensures that each annular electrode frame 6 is tightly and effectively locked together. This avoids the complex procedures typically required for high-end laser levels in conventional hydrogen and oxygen electrolysis equipment, and further prevents chamber misalignment due to internal pressure and gravity, as well as electrolyte leakage caused by tearing of the sealing gasket 7 due to shearing.

[0028] As a further implementation, the sealing gasket 7 is made of an engineering rubber material that is oil-resistant, acid and alkali-resistant, and high-temperature resistant; ensuring that it does not creep and has good resilience in long-term environments containing chloride ions, bromide ions, and salt spray. Together with the annular electrode frame 6, it seals the electrolysis chamber under the action of bolts, preventing environmental pollution and gas flash explosions caused by electrolyte and gas leakage.

[0029] As a further implementation, the selective ion exchange membrane 8 is composed of polyphenylene sulfide matrix material coated with a special medium, which has the ability to resist contamination by impurity ions and microorganisms and has ion conduction performance under high current density; the selective ion exchange membrane 8 can isolate the mutual transfer and ion conduction of hydrogen and oxygen gases, ensuring that hydrogen and oxygen gases can safely undergo electrolysis on both sides of the membrane.

[0030] As a further implementation, the electrode 9 consists of an anode and a cathode. The electrode 9 includes a NiFeBa-LDH anode with a protective layer of corrosion-resistant titanium and its alloys, and a Mo-NiP-type cathode. The presence of the catalyst increases the electrolytic surface area, promotes rapid bubble detachment, reduces polarization effects, and improves electrolysis efficiency. The main electrode plate 10 is a titanium substrate with a high-entropy conductive coating, achieving synergistic enhancement of corrosion ion blocking (such as chloride and bromide ions), electron transport, and catalytic activity, significantly extending service life and reducing system costs. The main electrode plate 10 serves to efficiently collect electricity, separate the reaction chamber, and guide fluid distribution.

[0031] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A non-pure water hydrogen / oxygen electrolysis gas generator, characterized in that, include: Multiple annular pole frames are provided, and a positioning and clamping structure is provided on the outer wall of each annular pole frame; a sealing gasket is provided between adjacent annular pole frames. A fixing ring is provided on one side of the annular electrode frame, and an annular groove is provided on the other side of the annular electrode frame. A gas-liquid flow channel and an electrolyte flow channel are provided on the annular electrode frame. The gas-liquid flow channel and the electrolyte flow channel are arranged opposite each other along the radial direction of the annular electrode frame. The gas-liquid flow channel is composed of multiple gas-liquid channels, which are distributed in a fan shape. The inner hole of the annular electrode frame is an electrolysis chamber. The gas-liquid channels are conical and their narrow ends are connected to the electrolysis chamber. A selective ion exchange membrane is provided in the electrolysis chamber. Electrodes are provided on both sides of the selective ion exchange membrane, and a main electrode plate is provided between the electrodes of adjacent annular electrode frames.

2. The non-pure water hydrogen and oxygen electrolysis gas generator as described in claim 1, characterized in that, The radial dimension of the fixing ring is smaller than the radial dimension of the annular groove; the difference between the axial dimension of the fixing ring and the dimension of the sealing gasket is smaller than the axial dimension of the annular groove.

3. The non-pure water hydrogen and oxygen electrolysis gas generation equipment as described in claim 1, characterized in that, The electrolyte flow channel is composed of multiple electrolyte channels, which are distributed in a fan shape. The electrolyte channels are conical with their thicker ends close to the inner circle of the annular electrode frame.

4. The non-pure water hydrogen and oxygen electrolysis gas generation equipment as described in claim 3, characterized in that, The annular electrode frame is provided with a gas-liquid outlet and an electrolyte inlet; the gas-liquid outlet is connected to the gas-liquid flow channel, and the electrolyte inlet is connected to the electrolyte flow channel.

5. The non-pure water hydrogen and oxygen electrolysis gas generation equipment as described in claim 4, characterized in that, There are two gas-liquid outlets and two gas-liquid flow channels, and the two gas-liquid outlets are arranged adjacent to each other; there are two electrolyte inlets and two electrolyte flow channels, and the two electrolyte outlets are arranged adjacent to each other.

6. The non-pure water hydrogen and oxygen electrolysis gas generation equipment as described in claim 1, characterized in that, The positioning and clamping structure includes a mounting base and a mounting positioning rod. There are two mounting bases, which are arranged opposite to each other on the outer circumferential side of the annular pole frame. There are two mounting positioning rods, each of which passes through one of the mounting bases on the multiple annular pole frames.

7. The non-pure water hydrogen and oxygen electrolysis gas generator as described in claim 1, characterized in that, The annular pole frame is made of corrosion-resistant and rigid rubber material through injection molding and processing.

8. The non-pure water hydrogen and oxygen electrolysis gas generation equipment according to claim 1, characterized in that, The sealing gasket is made of an engineering rubber material that is oil-resistant, acid and alkali-resistant, and high-temperature resistant.

9. The non-pure water hydrogen and oxygen electrolysis gas generator according to claim 1, characterized in that, Selective ion exchange membranes are composite materials made of polyphenylene sulfide matrix material coated with a special medium. They are resistant to contamination by impurity ions and microorganisms and have ion conduction performance at high current densities.

10. The non-pure water hydrogen and oxygen electrolysis gas generation equipment as described in claim 1, characterized in that, The electrode consists of an anode and a cathode, and the main electrode plate is a titanium substrate with a high-entropy conductive coating.

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