A hydrogen removal electrolytic cell device and a hydrogen removal method for a ship ballast water management system

Abstract

The application discloses a kind of hydrogen removal electrolytic cell device and hydrogen removal method of ship ballast water management system, which belongs to ship ballast water technical field.Hydrogen removal electrolytic cell device includes tank structure, and inlet and outlet are equipped on tank structure, and exhaust assembly and turbulence component are equipped in tank structure, exhaust assembly includes exhaust mechanism, gas-liquid separation mechanism, exhaust assembly is arranged in the upper region of tank structure, and the upper end of exhaust assembly is equipped with gas outlet;Turbulence component is arranged in the lower region of tank structure, and turbulence component includes disturbance mechanism and liquid flow enhancement mechanism cooperating with disturbance mechanism.The application occupies small space, and hydrogen removal efficiency is high, without additional hydrogen removal device, by setting self-exhaust assembly and turbulence component in electrolytic cell, using multi-stage hydrogen removal setting to separate by-product hydrogen from source, improve the safety of system operation, operation is more stable, suitable for ship ballast water treatment.

Description

Technical Field

[0001] This invention belongs to the field of ship ballast water technology, and more specifically, relates to a hydrogen removal electrolysis cell device and hydrogen removal method for a ship ballast water management system. Background Technology

[0002] Electrolytic ballast water treatment technology is one of the mainstream technologies for ballast water treatment. The electrolytic cell, as the core component of the electrolytic ballast water treatment technology, uses seawater or brine as the electrolyte. By applying direct current, it generates sodium hypochlorite and hydrogen gas as a byproduct. Sodium hypochlorite has strong oxidizing properties and can effectively kill microorganisms in ballast water to meet the prescribed discharge standards. However, hydrogen gas is flammable and explosive. If it is not removed in time, it will affect the safety of ships. At the same time, the accumulation of hydrogen gas in the electrolytic cell will lead to an increase in solution resistance and a decrease in electrolysis efficiency.

[0003] Currently, the commonly used hydrogen removal methods in electrolytic chlorination systems are gravity settling and cyclone separation. Gravity settling has problems such as low hydrogen removal efficiency, large hydrogen discharge tank volume, and difficulty in actual ship installation. Cyclone separation, on the other hand, has the advantage of high hydrogen removal efficiency, but it has high requirements for changes in inlet and outlet pressure and flow rate. If used improperly, top overflow or internal short flow may occur, resulting in poor hydrogen removal stability. Summary of the Invention

[0004] This invention addresses the technical problems existing in the prior art by providing a hydrogen removal electrolysis cell device and hydrogen removal method for a ship ballast water management system.

[0005] To address the aforementioned technical problems, this invention first provides a hydrogen removal electrolysis cell device for a ship ballast water management system, comprising a tank structure with an inlet and an outlet. The tank structure contains an exhaust assembly and a turbulence-enhancing assembly. The exhaust assembly includes an exhaust mechanism and a gas-liquid separation mechanism, and is located in the upper region of the tank structure, with a gas outlet at its upper end. The turbulence-enhancing assembly is located in the lower region of the tank structure, and includes a disturbance mechanism and a liquid flow enhancement mechanism that works in conjunction with the disturbance mechanism.

[0006] Preferably, the tank structure is equipped with an electrolysis mechanism, the exhaust assembly is located above the electrolysis mechanism, and the liquid flow enhancement mechanism is located below the electrolysis mechanism. The liquid flow enhancement mechanism enhances the disturbance of the electrolyte.

[0007] Preferably, the disturbance mechanism is located at the liquid outlet end. The disturbance mechanism includes at least a rotatable disturbance disk arranged radially along the tank structure and a fixed baffle arranged radially with the disturbance disk. An electrolyte flow space is provided between the disturbance disk and the fixed baffle. A liquid disturbance driving part is provided in the axial direction of the electrolyte flow space.

[0008] Preferably, the liquid disturbance drive unit includes a rotating impeller, which is mounted at the lower end of the collection port of the exhaust mechanism via a support rod. The rotating impeller is provided with rotating blades, and the support rod is perpendicular to the disturbance disk and the fixed baffle. The outer diameter of the rotating impeller is adapted to the distance between the disturbance disk and the fixed baffle.

[0009] The disturbance disk is circumferentially equipped with disturbance plates, which are perpendicular to the disturbance disk. The rotating impeller is movably connected to the disturbance disk through a worm gear assembly. The rotation of the rotating blades drives the disturbance disk to rotate.

[0010] Preferably, the liquid flow enhancement mechanism is equipped with an aeration mechanism, which has at least one aeration pipe. The aeration pipe is arranged along the axial direction of the tank structure and has a number of aeration holes evenly distributed on it.

[0011] Preferably, the aeration holes are located on the lower side of the aeration pipe and face the bottom of the electrolytic cell, and the aeration pipe is arranged parallel to the axial side wall of the cell structure; a compressed air source is connected to the inlet of the aeration pipe, and the compressed air source is connected to the aeration pipe through an air inlet pipe, which is equipped with a control valve.

[0012] Preferably, the exhaust mechanism is provided with a gas collecting section for collecting gas in the electrolytic cell. The lower end of the gas collecting section is provided with an arc-shaped collecting port facing the lower part of the electrolytic cell, and the upper end of the gas collecting section is provided with an exhaust port that connects to the gas-liquid separation mechanism.

[0013] Preferably, the gas-liquid separation mechanism is connected to the gas collection section through an exhaust pipe. The gas-liquid separation mechanism is located on the upper exterior of the tank structure and is equipped with a gas-liquid separation valve and a non-powered wind cap.

[0014] Preferably, the tank structure is a horizontal structure, the liquid flow enhancement mechanism is arranged along the axial direction of the tank structure, and the tank structure is provided with multiple fixed baffles arranged along its axial direction and radially arranged. The fixed baffles are provided with support structures for the exhaust mechanism and the turbulence component structure.

[0015] The present invention also provides a method for hydrogen removal in a ship ballast water management system, comprising:

[0016] Hydrogen evolution in electrolyte: When the electrolytic cell starts to operate, the compressed gas source is activated, and seawater or brine enters the electrolytic cell through the inlet. The electrolysis mechanism starts working and produces hydrogen as a byproduct.

[0017] Hydraulic rotational disturbance dehydrogenation: Fixed baffles and disturbance disks block the flow of electrolyte and change the cross-sectional area of ​​electrolyte flow. When the electrolyte passes through the gap of the fixed baffles, it drives the rotating impeller to rotate. The gas-liquid mixture generated by electrolysis in the electrolytic cell generates swirling flow. Under the action of hydraulic disturbance, the gas-liquid mixture rotates and is agitated, realizing gas-liquid separation and timely discharge of hydrogen generated during the electrolysis process.

[0018] Disturbing dehydrogenation by a turbulent disc: While the rotating impeller is rotating, it is driven to the turbulent disc through the worm gear assembly, which drives the turbulent disc to rotate, thereby disturbing the gas-liquid mixture in the electrolyte, enhancing the generation of swirling flow, and enhancing gas-liquid separation;

[0019] Enhanced turbulence dehydrogenation via aeration pipe: When the compressed gas source is started, the gas enters the aeration pipe through the inlet pipe. Under the action of aeration and rotational stirring, the water flow is increased, the turbulence is strengthened, the hydrogen overflow from the electrolyte is enhanced, and the gas-liquid separation is strengthened.

[0020] The non-powered wind cap of the exhaust assembly rotates under negative pressure to discharge hydrogen: the released hydrogen enters the exhaust pipe through the gas collection section, and after being separated by the gas-liquid separation valve, the non-powered wind cap is rotated by natural wind to generate suction. The hydrogen is discharged from the electrolytic cell in time through the non-powered wind cap and then discharged to the safe area outside the ship. The electrolyte flows out from the outlet.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This invention features a small footprint and high hydrogen removal efficiency, eliminating the need for additional hydrogen removal devices. By incorporating a self-venting assembly and a flow-dispersing assembly within the electrolyzer, a multi-stage hydrogen removal system separates byproduct hydrogen at the source, improving system safety. First, a flow-dispersing mechanism generates hydraulic disturbance, facilitating the rapid release of hydrogen from the electrolyte as bubbles, achieving separation of low-density hydrogen from the electrolyte at the source. This is further enhanced by a flow-enhancing mechanism, further improving the hydrogen removal effect. Simultaneously, the combined action of the venting and gas-liquid separation mechanisms ensures highly efficient hydrogen separation. This invention achieves multi-stage hydrogen separation, promptly discharging hydrogen generated during electrolysis, improving electrolysis efficiency and electrolyzer safety. Furthermore, the hydrogen removal electrolyzer design saves space compared to traditional hydrogen removal units, resulting in more stable operation and suitability for ship ballast water treatment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the hydrogen removal electrolyzer device of the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the hydrogen removal electrolyzer device of the present invention. Figure 2 ;

[0026] Figure 3This is a schematic diagram of the rotating impeller in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the disturbance disk according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the worm gear assembly according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the aeration pipe in an embodiment of the present invention.

[0030] Explanation of symbols in the diagram:

[0031] 100. Tank structure; 200. Exhaust mechanism; 300. Gas-liquid separation mechanism; 400. Disturbance mechanism; 500. Liquid flow enhancement mechanism; 1. Liquid inlet; 2. Liquid outlet; 3. Fixed partition; 4. Electrolytic cell shell; 5. Sealing cover; 6. Electrode; 7. Disturbance plate; 8. Fixed baffle; 9. Rotating impeller; 91. Support rod; 10. Worm gear assembly; 11. Fixed rod; 12. Disturbance plate; 13. Aeration pipe; 14. Aeration hole; 15. Compressed air source; 16. Air inlet pipe; 17. Check valve; 18. Regulating valve; 19. Pressure gauge; 20. Gas collection hood; 21. Gas-liquid separation valve; 22. Non-powered wind cap; 23. Non-metallic bearing. Detailed Implementation

[0032] To make the technical problems, solutions, and beneficial effects of this application clearer, the following detailed description, in conjunction with the accompanying drawings and embodiments, provides a hydrogen removal electrolyzer device and method for a ship ballast water management system. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0033] Please see Figure 1 This invention discloses a hydrogen removal electrolysis cell device for a ship ballast water management system, which includes a tank structure 100, an inlet 1 and an outlet 2 on the tank structure 100, and an exhaust assembly and a turbulence turbulence assembly inside the tank structure 1. The exhaust assembly includes an exhaust mechanism 200 and a gas-liquid separation mechanism 300. The exhaust assembly is located in the upper region of the tank structure 100 and has a gas outlet at its upper end. The turbulence turbulence assembly is located in the lower region of the tank structure 100 and includes a disturbance mechanism 400 and a liquid flow enhancement mechanism 500 that cooperates with the disturbance mechanism 400.

[0034] This invention features a small footprint and high hydrogen removal efficiency, eliminating the need for additional hydrogen removal devices. By incorporating a self-venting assembly and a flow-dispersing assembly within the electrolyzer, a multi-stage hydrogen removal system separates byproduct hydrogen at the source, enhancing system safety. First, a disturbance mechanism 400 generates hydraulic disturbance, facilitating the rapid release of hydrogen from the electrolyte as bubbles, achieving separation of low-density hydrogen from the electrolyte at the source. This is further enhanced by a liquid flow enhancement mechanism 500, improving the hydrogen removal effect. Simultaneously, the venting mechanism 200 and the gas-liquid separation mechanism 300 work together to achieve highly efficient hydrogen separation. This invention achieves multi-stage hydrogen separation, promptly discharging hydrogen generated during electrolysis, improving electrolysis efficiency and electrolyzer safety. Furthermore, the structural design of the hydrogen removal electrolyzer saves space compared to traditional hydrogen removal units, resulting in more stable operation and suitability for ship ballast water treatment.

[0035] In this embodiment, as Figure 1 , Figure 2 As shown, the tank structure 100 is a horizontal structure, and the liquid flow enhancement mechanism 500 is arranged along the axial direction of the tank structure 100. The tank structure 100 is provided with multiple fixed partitions 3 arranged along its axial direction and radially arranged. The fixed partitions 3 are provided with support structures that support the exhaust mechanism, turbulence components and other structures.

[0036] The tank structure 100 includes an electrolytic cell shell 4, which serves as the main supporting structure of the electrolytic cell. Sealing caps 5 are installed at the left and right ends of the electrolytic cell shell 4, achieving relative sealing of the electrolytic cell and ensuring the airtightness of the internal space of the shell 1. The tank structure 100 is equipped with an inlet 1 and an outlet 2. The inlet 1 is located at the lower right end of the electrolytic cell shell 4, through which electrolytes such as seawater or brine enter the electrolytic cell. The outlet 2 is located at the left end of the electrolytic cell shell 4 and is used to discharge the electrolyte.

[0037] Furthermore, the electrolytic cell shell 4 is also provided with an air inlet and an air outlet, both of which are located at the upper end of the electrolytic cell shell 4, and are used to introduce the gas source into the electrolytic cell and discharge the hydrogen products decomposed by electrolysis, respectively.

[0038] In this embodiment, the electrolytic cell shell 4 is made of a material resistant to sodium hypochlorite corrosion, which improves the robustness and corrosion resistance of the electrolytic cell and extends the service life of the equipment.

[0039] Specifically, four fixed partitions 3 are provided inside the electrolytic cell shell 4. These four partitions 3 are evenly distributed along the axial direction of the cell structure 100 to support and fix the internal structure. Each partition 3 is arranged radially along the cell structure 100 and perpendicular to its sidewall. The fixed partitions 3 are circular structures, and the supporting structures and specific perforated structures on them can be configured according to actual usage requirements. Those skilled in the art understand the relevant structures, and will not elaborate further here.

[0040] The present invention, by setting up a horizontal tank structure 100, is more suitable for the installation and application of ship ballast water systems than a vertical structure. It is easy to install, occupies less space, and the design of the hydrogen removal electrolyzer saves space compared to traditional hydrogen removal units, and the operation is more stable.

[0041] In this embodiment, the tank structure 100 is provided with an electrolysis mechanism, the exhaust assembly is located above the electrolysis mechanism, and the liquid flow enhancement mechanism 500 is located below the electrolysis mechanism. The liquid flow enhancement mechanism 500 enhances the disturbance of the electrolyte.

[0042] Specifically, the electrolysis mechanism includes an electrode 6, which is arranged laterally along the axial direction of the electrolytic cell and connected to a fixed partition 3. Both ends of the electrode 6 are connected to the inner wall of the electrolytic cell housing 4. The electrode 6 is composed of several titanium-plated ruthenium-iridium oxide coated electrode plates arranged alternately. When the electrolytic cell is running, seawater or brine enters the cell through the inlet 1. By applying direct current to the electrode 6, the anode plate of the electrode 6 generates sodium hypochlorite, and the cathode plate generates hydrogen gas as a byproduct.

[0043] like Figure 2 As shown, in this embodiment, the disturbance mechanism 400 is provided at the liquid outlet end. The disturbance mechanism 400 includes at least a rotatable disturbance disk 7 arranged radially along the tank structure and a fixed baffle 8 arranged radially with the disturbance disk 7. An electrolyte flow space is provided between the disturbance disk 7 and the fixed baffle 8. A liquid disturbance driving part is provided in the axial direction of the electrolyte flow space.

[0044] Specifically, a fixed baffle 8 and a disturbance plate 7 are provided. The fixed baffle 8 is vertically arranged along the radial direction of the electrolytic cell and is fixedly installed on the upper inner side of the electrolytic cell shell 4. The fixed baffle 8 is perpendicular to the side wall of the electrolytic cell shell 4. The disturbance plate 7 is located on the lower inner side of the electrolytic cell shell 4 and is adjacent to the fixed baffle 8 without contact. The disturbance plate 7 is perpendicular to the side wall of the electrolytic cell shell 4. Since the disturbance plate 7 and the fixed baffle 8 are arranged in the same radial direction of the electrolytic cell, there is a gap between the upper end face of the disturbance plate 7 and the lower end face of the fixed baffle 8 for the flow of electrolyte.

[0045] Furthermore, such as Figure 2 , Figure 3As shown, the liquid disturbance drive unit includes a rotating impeller 9, which is rotatably mounted at the liquid outlet end via a non-metallic bearing. The rotating impeller 9 is provided with rotating blades and is mounted on the inner side of the left end of the electrolytic cell housing 4 via a connecting piece. The rotating impeller 9 is arranged perpendicularly to the disturbance disk 7 and the fixed baffle 8. In the axial direction, the rotating impeller 9 is located on the axial extension line of the gap between the fixed baffle 8 and the disturbance disk 7. The outer diameter of the rotating impeller 9 is adapted to the gap distance between the disturbance disk 7 and the fixed baffle 8.

[0046] In this embodiment, the rotating impeller 9 is installed at the lower end of the collection port of the exhaust mechanism via a support rod 91. The rotating impeller 9 can be driven to rotate by water power. The flow of electrolyte in the electrolytic cell can drive the rotating impeller 9 to rotate. Thus, the rotation of the rotating impeller 9 can not only disturb the gas-liquid mixture generated by electrolysis and accelerate the separation of electrolyte and hydrogen, but also enable the separated hydrogen to be quickly discharged to the external safe area through the collection port of the exhaust mechanism 200 at the top of the rotating impeller 9.

[0047] Specifically, such as Figure 2 , Figure 4 , Figure 5 As shown, in this embodiment, the disturbance disk 7 is mounted on the end of the electrode 6 via a non-metallic bearing 23. The disturbance disk 7 is arranged along the radial direction of the electrolytic cell, and the disturbance disk 7 is connected to the rotating impeller 9 via a worm gear assembly 10. The worm gear assembly 10 is connected to the end of the electrode 6 via a fixed rod 11. Kinetic energy is transmitted through the worm gear assembly 10 to realize the linkage between the rotating blade and the disturbance disk 7. The rotation of the rotating impeller 9 can drive the disturbance disk 7 to rotate, thereby increasing the disturbance effect of the electrolyte in the electrolytic cell and improving the dehydrogenation effect of the electrolyte.

[0048] Furthermore, the agitator 7 is provided with multiple agitator plates 12, which are evenly distributed along the circumference of the agitator 7 and are perpendicular to the agitator 7. The agitator plates 12 move synchronously with the agitator 7. When the rotating impeller 9 rotates, it drives the agitator 7 to rotate via the worm gear assembly 10. The rotation of the agitator 7 drives the agitator plates 12 to rotate synchronously. The agitator plates 12 provided on the agitator 7 can increase the area of ​​electrolyte agitation and effectively improve the hydrogen separation efficiency.

[0049] In this embodiment, the radial dimensions of both the fixed baffle 8 and the turbulence disk 7 are smaller than the radius of the electrolytic cell, thereby making the gap between the fixed baffle 8 and the turbulence disk 7 suitable for the flow of electrolyte. Furthermore, the radial dimension of the rotating impeller 9 is matched with the gap to ensure a reasonable rotational turbulence effect.

[0050] Furthermore, the height of the fixed baffle 8 inside the electrolyzer exceeds the outlet of the electrolyzer, and the diameter of the agitator 7 is larger than that of the electrode plate. By matching the outer diameter of the rotating impeller 9 with the gap between the fixed baffle 8 and the agitator 7, not only can the retention time of the electrolyte be effectively extended, but the flow rate of electrolysis can also be increased by changing the cross-sectional area of ​​the fluid channel. When the electrolyte flows through the gap, it will drive the rotating impeller 9 to rotate, increasing the impeller rotation speed. The worm gear turbine assembly 10 drives the agitator 7 to rotate, thereby generating multiple disturbances to the electrolyte and improving the hydrogen separation effect.

[0051] Furthermore, as an embodiment of the present invention, the liquid disturbance drive unit may also adopt a stirring shaft structure, on which stirring blades are provided, and the stirring shaft can drive the disturbance disk to rotate.

[0052] like Figure 2 As shown, in this embodiment, the liquid flow enhancement mechanism 500 is provided with an aeration mechanism, and the aeration mechanism is provided with at least one aeration pipe 13. The aeration pipe 13 is arranged along the axial direction of the tank structure 100, and a plurality of aeration holes 14 are evenly distributed on the aeration pipe 13.

[0053] Specifically, such as Figure 2 , Figure 6 As shown, an aeration pipe 13 is arranged on the lower inner side of the electrolytic cell shell 4. The aeration pipe 13 is located below the electrode 6 and is arranged parallel to the side wall of the electrolytic cell shell 4. A number of aeration holes 14 are arranged at equal intervals along the axial direction of the aeration pipe 13 and are located on the lower side of the aeration pipe 13, facing the bottom of the electrolytic cell. The evenly distributed arrangement ensures the aeration effect in the electrolytic cell. Moreover, the aeration holes 14 facing the bottom of the electrolytic cell are conducive to the formation of air circulation in the electrolytic cell, increasing the disturbance time, improving the hydrogen separation efficiency, and cleaning the electrode surface at the same time, realizing electrode self-cleaning during electrolysis.

[0054] In this embodiment, a compressed air source 15 is connected to the inlet of the aeration pipe 13. The compressed air source 15 passes through the air inlet pipe 16 and is connected to the aeration pipe 13 through the electrolytic cell shell 4 to achieve gas communication. The gas from the compressed air source 15 is discharged from the aeration hole 14 through the air inlet pipe 16 and the aeration pipe 13. The bubbles generated by aeration will drive the water to flow during the rising process, forming an impact and stirring effect, improving the water flow. The air can form a circulation in the electrolytic cell to accelerate the hydrogen overflow and clean the electrode surface at the same time. The aeration pipe 13 works in coordination with the rotating impeller 9 and the disturbance disk 7 to further increase the disturbance effect in the electrolytic cell.

[0055] In this embodiment, the compressed gas source 15 is located at the top of the electrolytic cell, and its installation position should be higher than the top of the electrolytic cell. When the electrolytic cell is started, the compressed gas source 15 is turned on first to prevent electrolyte from flowing back into the compressed gas source 15 under pressure. A control valve is provided on the inlet pipeline, including a check valve 17 and a regulating valve 18 for inlet control. The regulating valve 18 can adjust the aeration rate according to the amount of hydrogen produced as a byproduct, thereby achieving adjustable turbulence rate. Furthermore, a pressure gauge 19 is installed on the inlet pipeline 16 at the outlet end of the compressed gas source 15 to monitor the flow status of the compressed gas source and improve operational safety.

[0056] In this embodiment, the length of the aeration pipe 13 matches the size of the electrode 6, and the distance between the aeration pipe 13 and the electrode 6 and the inner wall of the electrolytic cell shell 4 is 50-100mm. This suitable distance produces a better circulation effect. Aeration holes 14 are evenly distributed on the aeration pipe 13. The aeration holes 14 are small circular holes with a diameter of 1.5-2.5mm.

[0057] Furthermore, in this embodiment, the specific number of aeration pipes 13, the spacing and number of aeration holes 14 on the aeration pipes 13, and the shape and size of the aeration holes 14 can be adjusted according to actual usage requirements.

[0058] In this embodiment, the exhaust mechanism 200 is provided with a gas collecting section for collecting gas in the electrolytic cell. The lower end of the gas collecting section is provided with an arc-shaped collecting port facing the lower part of the electrolytic cell, and the upper end of the gas collecting section is provided with an exhaust port that connects to the gas-liquid separation mechanism 300.

[0059] Specifically, such as Figure 2 As shown, the gas collecting section is equipped with a gas collecting hood 20, which is installed above the electrode 6 and located in the upper region inside the electrolytic cell shell 4. The installation position of the gas collecting hood 20 is higher than the liquid outlet 2. It is used to collect the by-product hydrogen gas separated from the electrolyte. The gas collecting hood 20 extends along the axial direction of the electrolytic cell shell 4. The gas-liquid separation mechanism 300 is located outside the upper end of the tank structure 100, and the gas-liquid separation mechanism 300 is connected to the gas collecting hood 20 through an exhaust pipe. The outlet end of the gas collecting hood 20 is connected to an exhaust pipe, which passes through the electrolytic cell shell 4 and connects to the gas-liquid separation mechanism 300.

[0060] In this embodiment, the gas-liquid separation mechanism 300 is located at the upper center of the gas collection hood 20. The gas-liquid separation mechanism 300 includes a gas-liquid separation valve 21 and a non-powered vent cap 22. The gas-liquid separation valve 21 and the non-powered vent cap 22 are connected, and the gas-liquid separation valve 21 is connected to the exhaust pipe of the gas collection hood 20. The non-powered vent cap 22 is located at the upper end of the gas-liquid separation valve 21. The gas-liquid separation valve 21 is used to prevent electrolyte from overflowing from the top exhaust port. The bearing of the non-powered vent cap 22 is made of non-metallic material to ensure the safety of the non-powered vent cap 22 and to avoid sparks generated by the metal bearing during rotation, which could cause hydrogen combustion and explosion. The non-powered vent cap 22 is vertically located on the upper outer side of the electrolytic cell shell 4. The non-powered vent cap 22 is driven by natural wind to generate rotational suction force to achieve the exhaust effect. The hydrogen collected by the gas collection hood 20 is discharged through the gas-liquid separation valve 21 and the upper non-powered vent cap 22. The non-powered vent cap 22 ensures that the gas is smoothly discharged to a safe area, which can effectively prevent the backflow of external gas.

[0061] Furthermore, the present invention also provides an embodiment of a hydrogen removal method for a ship ballast water management system, comprising:

[0062] Hydrogen evolution in electrolyte: The electrolytic cell starts to operate, the compressed gas source 15 is started, seawater or brine enters the electrolytic cell through the liquid inlet 1, the electrolysis mechanism starts to work, and hydrogen is produced as a by-product.

[0063] Hydraulic rotational disturbance dehydrogenation: The fixed baffle 8 and the disturbance disk 7 block the flow of electrolyte and change the cross-sectional area of ​​electrolyte flow. When the electrolyte passes through the gap of the fixed baffle 8, it drives the rotating impeller 9 to rotate. The gas-liquid mixture generated by electrolysis in the electrolytic cell generates swirling flow. Under the action of hydraulic disturbance, the gas-liquid mixture rotates and is stirred, realizing gas-liquid separation and timely discharge of hydrogen generated in the electrolysis process.

[0064] Disturbing dehydrogenation by the turbulent disk: While the rotating impeller 9 is rotating, it is transmitted to the turbulent disk 7 through the worm gear assembly 10, driving the turbulent disk 7 to rotate, thereby disturbing the gas-liquid mixture in the electrolyte, enhancing the generation of swirling flow, and enhancing gas-liquid separation;

[0065] Enhanced turbulence dehydrogenation in aeration pipe: When the compressed gas source 15 is started, the gas enters the aeration pipe 13 through the air inlet pipe 16. Under the action of aeration and rotation stirring, the water flow is increased, the turbulence is strengthened, the hydrogen overflow from the electrolyte is strengthened, and the gas-liquid separation is enhanced.

[0066] The non-powered vent cap 22 of the exhaust assembly rotates under negative pressure to discharge hydrogen: the released hydrogen enters the exhaust pipe through the gas collection hood 20, and after being separated by the gas-liquid separation valve 21, the non-powered vent cap 22 is rotated by natural wind to generate suction. The hydrogen is discharged from the electrolytic cell in time through the non-powered vent cap 22 and then discharged to the safe area outside the ship. The electrolyte flows out from the liquid outlet.

[0067] The working process of the hydrogen removal electrolyzer of this invention is as follows:

[0068] When the electrolyzer starts running, the compressed gas source is first activated, and seawater or brine enters the electrolyzer through the inlet 1. By applying direct current to the electrode 6, sodium hypochlorite is generated on the anode plate of the electrode 6, and hydrogen gas is generated as a byproduct on the cathode plate. The fixed baffle 8 and the agitator 7 set inside the electrolyzer shell 4 can prolong the residence time of the electrolyte. At the same time, by changing the cross-sectional area, the flow rate of the electrolyte is increased. When the electrolyte flows through the gap between the fixed baffle 8 and the agitator 7 at a certain flow rate, it will drive the rotating impeller to rotate and transmit the rotation to the agitator 7 through the worm gear assembly 10. The agitator 7 and the agitator plate 12 will rotate. The rotation of the rotating impeller 9 and the agitator 7 will generate multiple disturbances to the electrolyte.

[0069] Meanwhile, gas is introduced into the aeration pipe 13 through the compressed gas source 15, and the gas is discharged through several aeration holes 14 on the aeration pipe 13, creating an aeration disturbance effect in the electrolytic cell. Under the action of aeration and multi-stage rotational disturbance, hydrogen in the electrolytic cell overflows from the electrolyte as bubbles. The released hydrogen enters the exhaust pipe through the gas collection hood 20 at the top. The natural wind drives the non-powered wind cap 22 to rotate and generate suction, discharging the hydrogen to a safe area, while the electrolyte flows out from the outlet.

[0070] This invention discloses a hydrogen removal electrolysis cell device and method for a ship ballast water management system. Compared with traditional hydrogen removal methods, this invention does not require a separate hydrogen removal device. The hydrogen removal components are installed inside the electrolysis cell. By adopting an in-situ four-stage hydrogen removal method consisting of rotating impeller disturbance dehydrogenation, disturbance disk disturbance dehydrogenation, aeration pipe disturbance dehydrogenation, and non-powered wind cap dehydrogenation, hydrogen generated during electrolysis can be discharged in a timely manner. It features high hydrogen removal efficiency, small footprint, convenient installation, and self-cleaning electrodes.

[0071] This invention, by incorporating a self-venting assembly and a turbulence-dispersing assembly within the electrolytic cell, utilizes the circulation effect generated by the aeration device and the turbulence created by the rotating impeller and turbulence disc 7 to facilitate the rapid release of hydrogen from the electrolyte in the form of bubbles. This achieves the separation of low-density hydrogen from the sodium hypochlorite solution at the source. Simultaneously, the invention employs a gas collection hood 20 and a non-powered wind cap 22 for gas collection and exhaust. Hydrogen is collected by the gas collection hood 20, and the natural wind drives the rotation of the non-powered wind cap 22 to generate suction, rapidly expelling the gas from the electrolytic cell, thus achieving highly efficient hydrogen separation. This invention achieves multi-stage hydrogen separation, enabling timely removal of hydrogen generated during electrolysis, improving electrolysis efficiency and the safety of the electrolytic cell. Furthermore, the structural design of the hydrogen removal electrolytic cell saves space compared to traditional hydrogen removal units, resulting in more stable operation. Simultaneously, through the coordinated operation of various components within the electrolytic cell, air can form a circulation within the cell, accelerating hydrogen overflow and effectively removing dirt from the electrode surface, extending the electrode cleaning cycle. This invention is suitable for applications in ship ballast water treatment.

[0072] In the description of this invention, it should be understood that terms such as “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0073] Furthermore, in the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0074] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydrogen removal electrolysis cell device for a ship ballast water management system, comprising a tank structure, wherein the tank structure is provided with an inlet and an outlet, characterized in that, The tank structure is equipped with an exhaust assembly and a flow turbulence assembly. The exhaust assembly includes an exhaust mechanism and a gas-liquid separation mechanism. The exhaust mechanism has a gas collecting section for collecting gas from the electrolytic cell, and the lower end of the gas collecting section has an arc-shaped collection port facing the lower part of the electrolytic cell. The gas-liquid separation mechanism has a gas-liquid separation valve and a non-powered wind cap. The exhaust assembly is located in the upper region of the tank structure, and the upper end of the exhaust assembly has a gas outlet. The gas-liquid separation mechanism is connected to the gas collecting section through an exhaust pipe and is located outside the upper part of the tank structure. The flow turbulence assembly is located in the lower region of the tank structure. The flow turbulence assembly includes a disturbance mechanism and a liquid flow enhancement mechanism that works in conjunction with the disturbance mechanism. The liquid flow enhancement mechanism has an aeration mechanism. The aeration mechanism has at least one aeration pipe, and several aeration holes are evenly distributed on the aeration pipe. The aeration holes are located on the lower side of the aeration pipe and face the bottom of the electrolytic cell. The disturbance mechanism is disposed at the liquid outlet end. The disturbance mechanism includes at least a rotatable disturbance disk arranged radially along the tank structure and a fixed baffle arranged radially with the disturbance disk. An electrolyte flow space is provided between the disturbance disk and the fixed baffle. A liquid disturbance driving part is provided in the axial direction of the electrolyte flow space. The liquid disturbance driving part includes a rotating impeller. The rotating impeller is disposed at the lower end of the collection port of the exhaust mechanism through a support rod. The rotating impeller is provided with rotating blades. A disturbance plate is circumferentially disposed on the disturbance disk. The disturbance plate is perpendicular to the disturbance disk. The rotating impeller is movably connected to the disturbance disk through a worm gear assembly. The rotating blades rotate to drive the disturbance disk to rotate.

2. The hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 1, characterized in that, The tank structure is equipped with an electrolysis mechanism, the exhaust assembly is located above the electrolysis mechanism, and the liquid flow enhancement mechanism is located below the electrolysis mechanism. The liquid flow enhancement mechanism enhances the disturbance of the electrolyte.

3. The hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 1, characterized in that, The support rod is perpendicular to the disturbance disk and the fixed baffle, and the outer diameter of the rotating impeller is adapted to the distance between the disturbance disk and the fixed baffle.

4. The hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 1 or 2, characterized in that, The aeration pipe is arranged along the axial direction of the tank structure.

5. The hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 4, characterized in that, The aeration pipe is arranged parallel to the axial sidewall of the tank structure; a compressed air source is connected to the inlet of the aeration pipe, and the compressed air source is connected to the aeration pipe through an air inlet pipe, which is equipped with a control valve.

6. A hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 1 or 2, characterized in that, The upper end of the gas collecting section is provided with an exhaust port that connects to the gas-liquid separation mechanism.

7. The hydrogen removal electrolysis cell device for a ship ballast water management system according to claim 1, characterized in that, The tank structure is a horizontal structure, and the liquid flow enhancement mechanism is arranged along the axial direction of the tank structure. The tank structure is provided with a plurality of fixed partitions arranged along its axial direction and radially arranged. The fixed partitions are provided with support structures that support the exhaust mechanism and the turbulence component structure.

8. A method for removing hydrogen from a ship's ballast water management system, characterized in that, It utilizes the hydrogen removal electrolysis cell device of the ship ballast water management system as described in claim 1, and the hydrogen removal method includes: Hydrogen evolution in electrolyte: When the electrolytic cell starts to operate, the compressed gas source is activated, and seawater or brine enters the electrolytic cell through the inlet. The electrolysis mechanism starts working and produces hydrogen as a byproduct. Hydraulic rotational disturbance dehydrogenation: Fixed baffles and disturbance disks block the flow of electrolyte and change the cross-sectional area of ​​electrolyte flow. When the electrolyte passes through the gap of the fixed baffles, it drives the rotating impeller to rotate. The gas-liquid mixture generated by electrolysis in the electrolytic cell generates swirling flow. Under the action of hydraulic disturbance, the gas-liquid mixture rotates and is agitated, realizing gas-liquid separation and timely discharge of hydrogen generated during the electrolysis process. Disturbing dehydrogenation by a disturbance disk: While the rotating impeller rotates, it is transmitted to the disturbance disk through the worm gear assembly, driving the disturbance disk to rotate, thereby disturbing the gas-liquid mixture in the electrolyte, enhancing the generation of swirling flow, and enhancing gas-liquid separation; Enhanced turbulence dehydrogenation via aeration pipe: When the compressed gas source is started, the gas enters the aeration pipe through the inlet pipe. Under the action of aeration and rotational stirring, the water flow is increased, the turbulence is strengthened, the hydrogen overflow from the electrolyte is enhanced, and the gas-liquid separation is strengthened. The non-powered wind cap of the exhaust assembly rotates under negative pressure to discharge hydrogen: the released hydrogen enters the exhaust pipe through the gas collection section, and after being separated by the gas-liquid separation valve, the non-powered wind cap is rotated by natural wind to generate suction. The hydrogen is discharged from the electrolytic cell in time through the non-powered wind cap and then discharged to the safe area outside the ship. The electrolyte flows out from the outlet.

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