An intermediate hydrogen removal device and method for a ship ballast water treatment system

Abstract

The application discloses an intermediate hydrogen removal device for a ship ballast water treatment system and a hydrogen removal method, and belongs to the field of marine ship equipment. The device comprises a cyclone separator, the cyclone separator comprising a shell, a separation plate and a fixing piece; the separation plate is arranged in a containing cavity, the density of the separation plate is less than the density of a solution entering the containing cavity for separation, a plurality of separation plates are uniformly arranged in a circumferential direction and define a reversed circular truncated cone-shaped separation piece; the fixing piece fixes the separation piece in the containing cavity and defines a taper angle of the separation piece changing within 10-30 degrees, and the fixing piece comprises a circular truncated cone-shaped fixing seat located directly below the separation piece. The application is applied to the intermediate hydrogen removal of the ship ballast water treatment system, solves the problem that bubbles enter a downstream pipeline of the cyclone separator, thereby affecting the hydrogen separation efficiency of the separator, has the characteristics that hydrogen in an electrolysis process can be effectively removed, the electrolysis efficiency is improved, the system reliability and the system service life are ensured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of marine ship equipment, and particularly relates to an intermediate hydrogen removal device and method for a ship ballast water treatment system. BACKGROUND

[0002] In the process of treating seawater by electrolysis, the method of removing hydrogen after electrolysis is widely used. However, a large amount of hydrogen gas is generated after electrolysis of seawater in each electrolytic cell. The hydrogen gas bubbles mixed in the seawater greatly affect the electrolysis efficiency of the seawater. In order to meet the required residual chlorine concentration of the electrolyzed seawater, an electrolytic cell module with a larger chlorine production capacity is required, or the current density needs to be increased to achieve the required chlorine production concentration. However, this method will reduce the service life of the electrode plate.

[0003] Chinese patent (CN112624242A) discloses a cyclone separator, which comprises a separator shell and a gas exhaust assembly arranged in the separator shell. The gas exhaust assembly comprises a bearing support, a bearing, a hollow rotating shaft, a driving fan and a gas collecting cap. The bearing support is arranged at the exhaust port and fixed to the inner side wall of the separator shell. A plurality of first exhaust holes are arranged on the bearing support along the axial direction of the separator shell. The top end of the hollow rotating shaft is rotatably mounted on the bearing support through the bearing. The gas collecting cap is fixed to the bottom end of the hollow rotating shaft. A gap is provided between the outer edge of the gas collecting cap and the inner side wall of the separator shell. The driving fan is fixed to the hollow rotating shaft and located between the bearing support and the gas collecting cap. The position of the driving fan corresponds to the position of the solution inlet. The above-mentioned cyclone separator is used for ship ballast water treatment device. By arranging the gas exhaust assembly in the separator shell, the hydrogen gas in the seawater electrolyte is caused to escape, thereby improving the gas-liquid separation efficiency of the cyclone separator.

[0004] However, when the above-mentioned cyclone separator is used for intermediate hydrogen removal of ship ballast water treatment, the gas bubbles at the bottom of the cyclone are not easy to be separated, and the gas bubbles enter the downstream pipeline of the cyclone separator, thereby affecting the hydrogen separation efficiency of the separator. SUMMARY

[0005] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below, so that other features, objects and advantages of the present application become more apparent.

[0006] The present application provides an intermediate hydrogen removal device and method for a ship ballast water treatment system, which solves the problem of the existing cyclone separator used for intermediate hydrogen removal of ship ballast water treatment, i.e. the gas bubbles at the bottom of the cyclone are not easy to be separated, and the gas bubbles enter the downstream pipeline of the cyclone separator, thereby affecting the hydrogen separation efficiency of the separator. The present application has the characteristics of effectively removing hydrogen gas in the electrolysis process, improving the electrolysis efficiency, ensuring the reliability and service life of the system.

[0007] The application discloses an intermediate hydrogen removal device for a ship ballast water treatment system.

[0008] In some embodiments, the middle axis of the separation piece coincides with the middle axis of the accommodating cavity, and a gap is left between adjacent separation pieces, and the gap width is 0-10 mm.

[0009] In some embodiments, the fixing piece comprises an upper fixing piece, the upper fixing piece further comprises a guide column, a support ring and a connecting rod, the top of the guide column is fixedly connected with the inner side of the bottom of the shell, the middle axis of the guide column coincides with the middle axis of the separation piece, the support ring is sleeved outside the guide column, the guide column guides the support ring to move up and down along the middle axis of the guide column, one end of the connecting rod is hingedly connected with the support ring, and the other end of the connecting rod is hingedly connected with the top of the separation piece, and each separation piece is connected with the support ring through at least one connecting rod.

[0010] In some embodiments, the fixing piece further comprises a lower fixing piece, the lower fixing piece further comprises a connecting plate, a guide rod and the fixing seat, the connecting plate is hingedly connected with the bottom of the separation piece, the top of the guide rod is fixedly connected with the bottom of the connecting plate, the middle axis of the guide rod coincides with the middle axis of the separation piece, and the fixing seat is fixedly connected with the shell and the bottom of the guide rod.

[0011] In some embodiments, the bottom of the shell is provided with a liquid outlet, the lower bottom of the fixing seat is located directly above the liquid outlet, and the fixing seat is fixedly connected with the shell through a plurality of connecting rods.

[0012] In some embodiments, the upper side of the shell is provided with a liquid inlet arranged in the tangent direction of the accommodating cavity, and the top of the shell is provided with a hydrogen outlet for discharging hydrogen.

[0013] In some embodiments, the device further comprises a seawater input pipeline, an electrolytic cell, a sodium hypochlorite output pipeline, and a hydrogen discharge pipeline, the seawater input pipeline is connected to the liquid inlet of the electrolytic cell, the liquid outlet of the electrolytic cell is connected to the liquid inlet of the cyclone separator, the sodium hypochlorite output pipeline is connected to the liquid outlet of the cyclone separator, and the hydrogen discharge pipeline is connected to the hydrogen outlet of the cyclone separator.

[0014] In some embodiments, the device further comprises a branch pipeline connecting the hydrogen discharge pipeline and the sodium hypochlorite output pipeline, and a parallel pipeline connected in parallel with the branch pipeline, a check valve is arranged on the branch pipeline, and a manual valve is arranged on the parallel pipeline.

[0015] In some embodiments, the seawater input pipeline is provided with a flow meter, a pressure sensor, and an electrical conductivity sensor, the sodium hypochlorite output pipeline is provided with a temperature sensor, and the sodium hypochlorite output pipeline is connected to a dosing point, the hydrogen discharge pipeline is provided with an air pressure sensor, a remote control valve, a liquid level sensor, and a steam-water separation valve, and the hydrogen discharge pipeline is connected to a hydrogen discharge fan.

[0016] Another aspect of the present application discloses a hydrogen removal method for the intermediate hydrogen removal device of the ship ballast water treatment system according to any one of the above technical solutions, comprising: the sodium hypochlorite solution mixed with hydrogen bubbles after electrolysis enters the cylindrical receiving cavity of the cyclone separator, as the dynamic changes of the water pressure and flow, the vortex form of the sodium hypochlorite solution mixed with hydrogen bubbles entering the cylindrical receiving cavity also dynamically changes, the whole separation plate dynamically adjusts the opening and closing state according to the vortex state in the cyclone separator, at the same time, the flow state of the sodium hypochlorite solution mixed with hydrogen bubbles is affected by the state of the separation plate to affect the vortex state in the cyclone separator, the solution enters the contact circular-truncated-cone fixed seat after the vortex, forms a reverse vortex under the action of the circular-truncated-cone fixed seat, and connects the positive vortex, so that the bottom bubbles of the conical cyclone re-enter the conical cyclone, block the bottom bubbles of the cyclone from entering the downstream pipeline, and realize the separation of the hydrogen bubbles in the sodium hypochlorite solution.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The present application discloses an intermediate hydrogen removal device for a ship ballast water treatment system, by designing the structure of the cyclone separator, especially the structure and shape of the separation plate, the vortex state of the sodium hypochlorite in the cyclone separator is guided, and the reverse vortex is formed by cooperating with the fixed seat with a specific structure, so that the bottom bubbles of the conical cyclone re-enter the conical cyclone, block the bottom bubbles of the cyclone from entering the downstream pipeline, realize the separation of the hydrogen bubbles in the sodium hypochlorite solution, effectively remove the hydrogen in the electrolysis process, improve the electrolysis efficiency, and ensure the system reliability and system service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0020] Figure 1 Partial sectional view of the cyclone separator of the intermediate hydrogen removal device for ship ballast water treatment system provided by the embodiments of the present application;

[0021] Figure 2 Another partial sectional view of the cyclone separator of the intermediate hydrogen removal device for ship ballast water treatment system provided by the embodiments of the present application;

[0022] Figure 3 Structural schematic view of the intermediate hydrogen removal device for ship ballast water treatment system provided by the embodiments of the present application;

[0023] Figure 4 Structural schematic view of the electrolytic cell module of the intermediate hydrogen removal device for ship ballast water treatment system provided by the embodiments of the present application;

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, flow meter; 2, pressure sensor; 3, conductivity sensor; 4, electrolytic cell module; 41, electrolytic cell; 42, cyclone separator; 421, support ring; 422, connecting rod; 423, separation plate; 424, connecting plate; 425, fixing seat; 426, housing; 427, guide column; 428, guide rod; 5, hydrogen removal fan; 6, air pressure sensor; 7, remote control valve; 8, liquid level sensor; 9, steam-water separation valve; 10, manual valve; 11, check valve; 12, temperature sensor; 13, rectifier. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the present application is described and explained below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0026] It is apparent that the drawings described below in the description merely show some examples or embodiments of the present application, and the present application can be applied to other similar situations without creative labor by those skilled in the art based on these drawings. In addition, it can be understood that although the efforts made in the development process can be complex and lengthy, some modifications, such as design, manufacture or production, etc. based on the technical content disclosed in the present application, are only routine technical means for those skilled in the art related to the disclosure of the present application, and should not be understood as insufficient disclosure of the present application.

[0027] In the present application, the term "embodiment" means that the specific features, structures or properties described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments without conflict.

[0028] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning by those skilled in the art in the technical field to which the present application belongs. The terms "one", "a", "an", "the", and similar words involved in the present application do not represent quantity limitation, but can represent singular or plural. The terms "include", "contain", "have", and any variations thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but can also include steps or units not listed, or can also include other steps or units inherent to the process, method, product or device. The terms "connected", "connected" and similar words involved in the present application are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The term "multiple" refers to two or more.

[0029] The embodiment of the present application provides an intermediate hydrogen removal device for a ship ballast water treatment system, which at least comprises a cyclone separator 42, Figure 1 、 2 It is a partial sectional view of a cyclone separator 42 for an intermediate hydrogen removal device for a ship ballast water treatment system according to the embodiment of the present application. Referring to Figure 1 、 2As shown, the cyclone separator 42 further comprises a housing 426, a separation plate 423, and a fixing member; an inner surface of the housing 426 defines a cylindrical accommodating cavity; the separation plate 423 is arranged in the accommodating cavity, the density of the separation plate 423 is less than that of the solution entering the accommodating cavity for separation, a plurality of separation holes are formed in the separation plate 423, the plurality of separation plates 423 are uniformly arranged in a circumferential direction and define a reverse-tapered-truncated-cone-shaped separation member; the fixing member fixes the separation member in the accommodating cavity and defines a taper angle of the separation member changing within 10-30°, and the fixing member comprises a reverse-tapered-truncated-cone-shaped fixing seat 425 located directly below the separation member.

[0030] After the seawater enters the cyclone separator 42, a rotational flow is formed, and the state of the rotational flow dynamically changes according to the parameters such as the water inflow pressure and flow rate of the system. Therefore, after the sodium hypochlorite solution enters the cyclone separator 42, the vortex formed by the liquid in the separator also dynamically changes with the dynamic changes of the water inflow pressure and flow rate, and the dynamic changes of the vortex state easily lead to the hydrogen gas bubbles in the sodium hypochlorite solution entering the bottom of the cyclone separator 42 and then entering the downstream pipeline along with the vortex, thereby causing the problem of low hydrogen separation efficiency.

[0031] The present application designs the structure of the cyclone separator 42, specifically, the density of the separation plate 423 is less than that of the solution entering the accommodating cavity for separation, and a reverse-tapered-truncated-cone-shaped separation member surrounded by the separation plate 423 is also limited, separation holes are formed in the separation plate 423, and the adjacent separation plates 423 are designed to be spaced apart, the separation member surrounded by the separation plate 423 is fixed in the accommodating cavity by the fixing member, and the taper angle of the separation member can also change within 10-30°, the opening and closing of the separation plate 423 are realized, and the vortex state formed by the sodium hypochlorite solution entering the cyclone separator 42 is guided, so that the vortex state changes from dynamic change to state change within a set range, the micro-bubbles entering the bottom of the cyclone separator 42 along with the vortex are separated, further, the reverse-tapered-truncated-cone-shaped fixing seat 425 is arranged directly below the separation member, the reverse-tapered-truncated-cone-shaped fixing seat 425 is arranged opposite to the reverse-tapered-truncated-cone-shaped separation member, the vortex is guided to form a reverse vortex, the bubbles at the bottom of the vortex re-enter the upper vortex cone, the bubbles at the bottom of the vortex are blocked from entering the downstream pipeline, the separation of the hydrogen gas bubbles in the sodium hypochlorite solution is realized, the hydrogen gas in the electrolysis process is effectively removed, the electrolysis efficiency is improved, and the system reliability and service life are ensured.

[0032] The separation process of hydrogen gas needs to be explained that after the sodium hypochlorite solution enters the cyclone separator 42, the vortex formed by the liquid in the cyclone separator 42 is dynamically changed with the dynamic change of the water pressure and flow rate. Since the density of the separation plate 423 adopts a material lower than the density of the solution, the separation plate 423 as a whole will dynamically adjust the opening and closing state of the vortex state in the cyclone separator 42, and at the same time, the opening and closing state is limited by the fixed part (the cone angle of the separation part changes within 10-30°), so that the flow state of the final liquid is affected by the state of the separation plate 423 to affect the vortex state in the cyclone separator 42, avoiding the flow of bubbles in the lower vortex into the downstream pipeline. Specifically, the sodium hypochlorite solution will form a cyclone after entering the cyclone separator 42. The state of the cyclone dynamically changes according to the change of the parameters such as the water pressure and flow rate of the system. The separation plate 423 is distributed on the surface of the cyclone to guide the cyclone state and destroy the bubbles on the surface of the cyclone to promote gas separation. The state of the separation plate 423 dynamically changes with the change of the cyclone state in the separator, guides the cyclone in a better state, and forms an inverse cyclone at the bottom of the conical base of the separator, so that the bubbles at the bottom of the conical cyclone re-enter the conical cyclone, block the bubbles at the bottom of the cyclone from entering the downstream pipeline, and greatly improve the separation efficiency of the separator.

[0033] Further, the above-mentioned cyclone separator 42 of the present application further defines a cylindrical accommodating cavity. The cylindrical accommodating cavity cooperates with the inverted circular cone-shaped separation part and the circular cone-shaped fixed seat 425, which is conducive to guiding the change of the vortex state in the cyclone separator 42.

[0034] In order to ensure the stability of the vortex state change, the central axis of the separation part coincides with the central axis of the accommodating cavity, and a gap is left between adjacent separation plates 423, and the gap width is 0-10 mm. The technical scheme further limits that a gap is left between the separation plates 423. The reason is that the gap ensures the opening and closing of the separation plate 423, thereby realizing that the cone angle of the separation part changes within 10-30°, ensuring the guidance of the vortex state in the cyclone separator 42, and at the same time, ensuring the stability of the overall structure of the separation part surrounded by the separation plate 423. The technical scheme specifically limits the gap width, which can be understood as the gap width can also be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm and any point value within the range.

[0035] In order to ensure the fixing effect of the separation piece and realize the opening and closing of the separation plate 423 under the specified requirements, the fixing piece includes an upper fixing piece, which further includes a guide column 427, a support ring 421, and a connecting rod 422. The top of the guide column 427 is fixedly connected to the inner side of the bottom of the shell 426, and the central axis of the guide column 427 coincides with the central axis of the separation piece. The support ring 421 is sleeved on the outside of the guide column 427. The guide column 427 guides the support ring 421 to move up and down along the central axis direction of the guide column 427. One end of the connecting rod 422 is hingedly connected to the support ring 421, and the other end is hingedly connected to the top of the separation plate 423. Each separation plate 423 is connected to the support ring 421 through at least one connecting rod 422. Under the guidance of the guide column 427, the support ring 421 moves up and down within a certain range along the central axis direction of the guide column 427, thereby driving the rotation of the connecting rod 422 that is hingedly connected to the support ring 421. The connecting rod 422 is hingedly connected to the separation plate 423, thereby realizing the opening and closing of the separation plate 423. At the same time, as mentioned above, since the density of the separation plate 423 is lower than that of the solution, the overall separation plate 423 will adjust the opening and closing state according to the vortex state in the cyclone separator 42. The structure design of the upper fixing piece ensures the fixing effect of the separation piece, meets the requirement that the overall separation plate 423 adjusts the opening and closing state according to the vortex state in the cyclone separator 42, and further limits the change of the cone angle of the separation piece within 10-30° through the up and down movement range of the support ring 421, thereby ensuring the effective separation of hydrogen. Further, in order to limit the up and down movement range of the support ring 421, a limiting piece is arranged on the guide column 427 to limit the up and down movement range of the support ring 421.

[0036] In some embodiments, the outer surface of the guide column 427 can be cylindrical or prismatic, and the corresponding support ring 421 can be a circular ring or a polygon corresponding to the prismatic shape. When the outer surface of the guide column 427 is prismatic, it is beneficial to a certain extent to limit the rotation between the support ring 421 and the guide column 427, thereby further ensuring the stability of the separation piece structure.

[0037] In order to ensure the stable fixing of the separation piece in the cyclone separator 42 accommodating cavity, the fixing piece further includes a lower fixing piece, which further includes a connecting plate 424, a guide rod 428, and a fixed seat 425. The connecting plate 424 is hingedly connected to the bottom of the plurality of separation plates 423. The top of the guide rod 428 is fixedly connected to the bottom of the connecting plate 424. The central axis of the guide rod 428 coincides with the central axis of the separation piece. The fixed seat 425 is fixedly connected to the shell 426, and the bottom of the guide rod 428 is fixedly connected to the fixed seat 425.

[0038] In some embodiments, the bottom of the shell 426 is provided with a liquid outlet, the lower bottom surface of the fixing seat 425 is located directly above the liquid outlet, and the fixing seat 425 is fixedly connected to the shell 426 through a plurality of connecting rods. The upper side surface of the shell 426 is provided with a liquid inlet arranged along the tangent direction of the containing cavity, and the top of the shell 426 is provided with a hydrogen outlet for discharging hydrogen. By arranging the liquid inlet, the liquid outlet and the hydrogen outlet, the water direction of the cyclone separator 42 is tangent to the inner wall of the separator, and the cyclone effect is generated in the separator, the hydrogen is discharged at the top, and the sodium hypochlorite solution without hydrogen bubble mixing is discharged at the bottom.

[0039] As shown in Figure 3 The intermediate hydrogen removal device for the ship ballast water treatment system further comprises a seawater input pipeline, an electrolytic cell 41, a sodium hypochlorite outlet pipeline, and a hydrogen discharge pipeline. The seawater input pipeline is connected to the liquid inlet of the electrolytic cell 41, the liquid outlet of the electrolytic cell 41 is connected to the liquid inlet of the cyclone separator 42, the sodium hypochlorite outlet pipeline is connected to the liquid outlet of the cyclone separator 42, and the hydrogen discharge pipeline is connected to the hydrogen outlet of the cyclone separator 42. In some embodiments, the seawater input pipeline is provided with a flow meter 1, a pressure sensor 2 and an electric conductivity sensor 3; the sodium hypochlorite outlet pipeline is provided with a temperature sensor 12, and the sodium hypochlorite outlet pipeline is connected to a dosing point; the hydrogen discharge pipeline is provided with an air pressure sensor 6, a remote control valve 7, a liquid level sensor 8 and a steam-water separation valve 9, and the hydrogen discharge pipeline is connected to a hydrogen discharge fan 5. As shown in Figure 4 The electrolytic cell 41 and the cyclone separator 42 constitute an electrolytic cell module 4, which further comprises a rectifier 13 connected to the electrolytic cell 41, and the cyclone separator 42 is further connected with a liquid level sensor 8.

[0040] Further, the intermediate hydrogen removal device for the ship ballast water treatment system further comprises a branch connected between the hydrogen discharge pipeline and the sodium hypochlorite outlet pipeline, and a parallel pipeline connected in parallel with the branch; the branch is provided with a check valve 11, and the parallel pipeline is provided with a manual valve 10. The hydrogen discharge pipeline of the electrolytic cell module 4 is provided with a liquid level switch and a remote control valve 7 after being connected in parallel; if the steam-water separation valve 9 fails and causes the liquid level to reach the liquid level sensor 8, the system will alarm and stop to avoid the sodium hypochlorite solution entering the hydrogen discharge pipeline. The hydrogen discharge pipeline of all electrolytic cell modules 4 is connected to an outlet dosing pipeline (i.e. the sodium hypochlorite outlet pipeline) after being connected in parallel; the branch and the parallel pipeline are respectively provided with a manual valve 10 and a check valve 11; after the system is stopped, the seawater in the modules is uniformly discharged, the residual water in the hydrogen discharge pipeline is also discharged through the check valve 11 to the outlet of the intermediate hydrogen removal device and is discharged, the manual valve 10 is mainly used for emergency use when the check valve 11 fails, the intermediate hydrogen removal device comprises a plurality of electrolytic cell modules 4 connected in series; when the liquid level reaches the set liquid level, the liquid level sensor 8 at the position of the main hydrogen discharge pipeline will trigger the system to alarm and stop.

[0041] The intermediate hydrogen removal device for ship ballast water treatment system can comprise a plurality of electrolytic cell modules 4, each of which is provided with an electrolytic cell 41, and each electrolytic cell 41 is connected with a cyclone separator 42, and the seawater under pressure enters the intermediate hydrogen removal device and is sequentially electrolyzed in the plurality of electrolytic cells 41 into a mixed solution of sodium hypochlorite and hydrogen, and then enters the cyclone separator 42, and the solution forms a cyclone in the cyclone separator 42, and the hydrogen accumulates at the top of the separator and is discharged through a steam-water separation valve 9, and the sodium hypochlorite solution flows out through the lower end of the separator.

[0042] The intermediate hydrogen removal device for ship ballast water treatment system can comprise a plurality of electrolytic cell modules 4, each of which is provided with an electrolytic cell 41, and each electrolytic cell 41 is connected with a cyclone separator 42, and the seawater under pressure enters the intermediate hydrogen removal device and is sequentially electrolyzed in the plurality of electrolytic cells 41 into a mixed solution of sodium hypochlorite and hydrogen, and then enters the cyclone separator 42, and the solution forms a cyclone in the cyclone separator 42, and the hydrogen accumulates at the top of the separator and is discharged through a steam-water separation valve 9, and the sodium hypochlorite solution flows out through the lower end of the separator.

[0043] The above-described technical features of the embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict each other, they should be considered as within the scope of the present disclosure.

[0044] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. An intermediate hydrogen removal device for a ship ballast water treatment system, characterized in that, Includes a cyclone separator, the cyclone separator further comprising: A housing, the inner surface of which defines a cylindrical receiving cavity; A separation plate is disposed in the receiving cavity. The density of the separation plate is less than the density of the solution entering the receiving cavity for separation. The separation plate has a plurality of separation holes. The plurality of separation plates are evenly arranged circumferentially and define an inverted frustum-shaped separation element. A fixing member that secures the separating member within the receiving cavity and limits the cone angle of the separating member to vary within 10-30°, the fixing member including a frustum-shaped fixing seat located directly below the separating member; The central axis of the separating component coincides with the central axis of the receiving cavity, and a gap is left between adjacent separating plates, the gap width being 0-10 mm.

2. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 1, characterized in that, The fastener includes an upper fastener, and the upper fastener further includes: A guide post, the top of which is fixedly connected to the inner side of the top of the housing, and the central axis of the guide post coincides with the central axis of the separator; A support ring is sleeved on the outside of the guide post; the guide post guides the support ring to move up and down along the central axis of the guide post; A connecting rod, one end of which is hinged to the support ring and the other end of which is hinged to the top of the separation plate, wherein each separation plate is connected to the support ring by at least one of the connecting rods.

3. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 1, characterized in that, The fastener further includes a lower fastener, the lower fastener further comprising: A connecting plate, which is hinged to the bottom of a plurality of the separating plates; A guide rod, the top of which is fixedly connected to the bottom of the connecting plate; the central axis of the guide rod coincides with the central axis of the separating component; The fixed base is fixedly connected to the housing, and the bottom of the guide rod is fixedly connected to the fixed base.

4. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 1, characterized in that, The bottom of the housing has a liquid outlet, and the bottom surface of the fixing base is located directly above the liquid outlet. The fixing base is fixedly connected to the housing by several connecting rods.

5. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 4, characterized in that, The upper side of the housing has a liquid inlet that is tangential to the cavity, and the top of the housing has a hydrogen outlet for hydrogen discharge.

6. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 5, characterized in that, It also includes a seawater input pipeline, an electrolytic cell, a sodium hypochlorite output pipeline, and a hydrogen discharge pipeline. The seawater input pipeline is connected to the inlet of the electrolytic cell, the outlet of the electrolytic cell is connected to the inlet of the cyclone separator, the sodium hypochlorite output pipeline is connected to the outlet of the cyclone separator, and the hydrogen discharge pipeline is connected to the hydrogen outlet of the cyclone separator.

7. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 6, characterized in that, It also includes a branch connecting the hydrogen discharge pipeline and the sodium hypochlorite outlet pipeline, as well as a parallel pipeline connected in parallel with the branch; the branch is equipped with a check valve, and the parallel pipeline is equipped with a manual valve.

8. The intermediate hydrogen removal device for a ship ballast water treatment system according to claim 6, characterized in that, The seawater input pipeline is equipped with a flow meter, a pressure sensor, and a conductivity sensor; the sodium hypochlorite output pipeline is equipped with a temperature sensor and is connected to the dosing point; the hydrogen discharge pipeline is equipped with a wind pressure sensor, a remote control valve, a liquid level sensor, and a gas-liquid separator valve, and is connected to a hydrogen discharge fan.

9. The hydrogen removal method for an intermediate hydrogen removal unit in a ship ballast water treatment system according to any one of claims 1-8, characterized in that, include: The electrolyzed sodium hypochlorite solution mixed with hydrogen bubbles enters the cylindrical cavity of the cyclone separator. With the dynamic changes in the inflow water pressure and flow rate, the vortex pattern formed by the sodium hypochlorite solution mixed with hydrogen bubbles in the cylindrical cavity also changes dynamically. The separation plate as a whole dynamically adjusts its opening and closing state according to the vortex state inside the cyclone separator. At the same time, the flow state of the sodium hypochlorite solution mixed with hydrogen bubbles is affected by the state of the separation plate, thus affecting the vortex state inside the cyclone separator. After passing through the vortex, the solution enters the contact frustum-shaped fixed seat. Under the action of the frustum-shaped fixed seat, a reverse swirling flow is formed, which connects with the forward swirling flow. This allows the bubbles at the bottom of the conical cyclone to re-enter the conical cyclone, preventing the bubbles at the bottom of the swirling flow from entering the downstream pipe, thereby achieving the separation of hydrogen bubbles in the sodium hypochlorite solution.

Images