Hydrogen separation device and hydrogen discharge system of sodium hypochlorite generator

Abstract

The invention discloses a hydrogen separation device and a hydrogen discharge system of a sodium hypochlorite generator, relates to the field of sodium hypochlorite production, and solves the problem of low separation efficiency of a single-stage tank body in the prior art. The bottom of the separation tank body is provided with a liquid outlet, and the top is provided with an exhaust port; the device further comprises a feeding pipe, the feeding pipe is arranged in the tank body of the separation tank body, and the feeding pipe is provided with a discharging port; a separation unit is arranged below the discharge hole; the separation unit comprises a separation main body; the separation main body is conical; a separation tank with an upward opening is arranged in the separation main body; the separation tank is conical; a gas-liquid mixture flowing out of the discharge port enters the separation tank for gas-liquid separation, and hydrogen is discharged through the exhaust port; liquid in the conical cavity of the separation unit is gathered at the bottom of the tank body after overflowing and is discharged through a liquid outlet. The purpose of improving the separation efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to a chemical equipment, and more specifically, to a hydrogen separation device and a hydrogen discharge system for a sodium hypochlorite generator. Background Art

[0002] As an important equipment for generating sodium hypochlorite solution by electrolyzing brine, the sodium hypochlorite generator has a wide range of applications in multiple fields. Its working principle is relatively delicate and orderly. First, table salt and softened water need to be fully dissolved and mixed to react, and finally, saturated brine is prepared and properly stored for later use. When entering the production stage, the saturated brine and softened water are mixed and diluted in a certain proportion to prepare dilute brine with a concentration of about 2 - 5%, which is used as the electrolyte to provide the material basis for the subsequent electrolysis reaction. After the electrolysis reaction is completed, the generated sodium hypochlorite solution and hydrogen need to be separated by a specific method.

[0003] Currently, common hydrogen separators mainly adopt a multi-stage tank body and step-by-step separation method to separate hydrogen from the sodium hypochlorite solution. Although this separation method can ensure the separation effect to a certain extent, the single-stage separation efficiency is low, and multiple tank bodies, complex pipelines and control systems are required, resulting in a relatively high equipment cost and increasing the production input cost.

[0004] Moreover, the existing hydrogen discharge system also has obvious deficiencies and cannot effectively solve the problem of hydrogen residue in the storage tank. As an inflammable and explosive gas, the residual hydrogen in the storage tank poses a serious threat to the equipment safety. Once encountering suitable conditions, such as a fire source, static electricity, etc., the residual hydrogen is very likely to cause an explosion accident, bringing great risks to the production equipment and the safety of operators. Therefore, how to improve the hydrogen discharge system and completely solve the problem of hydrogen residue in the storage tank has become an important direction in the research and improvement of sodium hypochlorite generators. Summary of the Invention

[0005] In a first aspect, the purpose of the present invention is to provide a hydrogen separation device for a sodium hypochlorite generator. By arranging a separation unit in the separation device, the residence time of the mixture in the separation pipe is extended, so that the gas and liquid have sufficient time to separate, reducing the number of separation tanks used and lowering the cost.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: A hydrogen separation device for a sodium hypochlorite generator, the separation device includes a separation tank body; a liquid discharge port is arranged at the bottom of the separation tank body, and an exhaust port is arranged at the top; it further includes a feed pipe, the feed pipe is arranged inside the tank body of the separation tank body, and the feed pipe is provided with a discharge port; a separation unit is arranged below the discharge port;

[0007] Among them, the separation unit includes a separation main body which is conical; a separation pool with an upward opening is arranged inside the separation main body; the separation pool is conical; the gas-liquid mixture flowing out from the discharge port enters the separation pool for gas-liquid separation, and hydrogen is discharged through the exhaust port; the liquid overflows in the conical cavity of the separation unit and accumulates at the bottom of the tank body, and is discharged through the liquid discharge port.

[0008] Further, the separation tank body includes a gas collection hood, a liquid accumulation tank and a separation cylinder; the gas collection hood is detachably arranged above the separation cylinder, and the exhaust port is arranged at the top of the gas collection hood; the liquid accumulation tank is detachably arranged at the bottom of the separation cylinder, and the liquid discharge port is arranged below the liquid accumulation tank.

[0009] Further, the feed pipe is vertically arranged inside the tank body of the separation tank; the discharge port of the feed pipe is located at the top of the feed pipe.

[0010] Among them, the separation unit further includes a mounting part; the mounting part is arranged at the lower end of the separation main body; an installation cavity adapted to the shape of the feed pipe is arranged inside the mounting part; the separation unit is arranged on the feed pipe through the mounting part; the installation cavity cooperates with the feed pipe to prevent the liquid from flowing out of the installation cavity.

[0011] Further, it includes a plurality of separation units; the plurality of separation units are sequentially arranged on the feed pipe from top to bottom.

[0012] Further, the separation unit further includes an overflow part; the overflow part is arranged above the separation main body of the separation unit; the overflow part is cylindrical; the size of the overflow part is adapted to the upward opening of the separation main body; an overflow port is arranged on the overflow part; the overflow port is in an inverted triangle shape.

[0013] Further, for the conical separation pool, its cone angle is α; 90° ≤ α ≤ 120°.

[0014] Further, a breathable plate is arranged inside the separation cylinder; the breathable plate is arranged above the feed port; breathable holes are also arranged on the breathable plate.

[0015] Further, a flow splitting joint is arranged above the discharge port; a plurality of flow splitting channels are arranged on the flow splitting joint.

[0016] In a second aspect, the present invention provides a hydrogen discharge system for a sodium hypochlorite hydrogen generator, the sodium hypochlorite generator includes a reaction system and a storage tank, the hydrogen discharge system includes the hydrogen separation device as described above; the hydrogen discharge system further includes a hydrogen discharge power mechanism, a hydrogen discharge pipeline and a liquid discharge pipeline; the hydrogen discharge pipeline includes a first pipeline and a second pipeline.

[0017] Among them, the hydrogen discharge power mechanism is used to convey gas into the storage tank.

[0018] Among them, the second pipeline is arranged at the top of the storage tank and is used to discharge the gas in the tank;

[0019] Among them, the exhaust port of the hydrogen separation device is communicated with the second pipeline through the first pipeline; the feed pipe is communicated with the reaction system; the drain port is communicated with the storage tank through the drain pipeline.

[0020] Further, the hydrogen discharge power mechanism includes a hydrogen discharge fan and a blast pipe; the hydrogen discharge fan sends air into the storage tank through the blast pipe;

[0021] Among them, the hydrogen discharge pipeline further includes a Venturi tube, which is arranged on the second pipeline, and the first pipeline is communicated with the Venturi tube; the high-speed airflow in the second pipeline generates negative pressure in the Venturi tube, sucking the hydrogen in the first pipeline into the Venturi tube to mix with the gas in the second pipeline and then discharging it;

[0022] Among them, the drain pipeline includes a vertical section arranged above the storage tank; the hydrogen discharge pipeline further includes a third pipeline; the third pipeline is arranged vertically; the vertical section is communicated with the first pipeline through the third pipeline.

[0023] In summary, the present invention has at least one of the following beneficial effects:

[0024] 1. By adopting the hydrogen separation device provided by the present invention, on the one hand, the cost of separating hydrogen is reduced, and on the other hand, the separation efficiency of the separation device in this solution is high, the hydrogen residue is small, reducing the working load of the hydrogen discharge system and ensuring the safety of the sodium hypochlorite generator.

[0025] 2. By adopting the hydrogen discharge system provided by the present invention, air is introduced into the storage tank to take away the hydrogen in the storage tank, reducing the hydrogen content in the storage tank and improving the safety of the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the hydrogen separation device in Embodiment 1

[0027] Figure 2 is a schematic diagram of the separation unit in Embodiment 1

[0028] Figure 3 is a schematic diagram of the air-permeable plate in Embodiment 1

[0029] Figure 4 is a schematic diagram of the hydrogen discharge system in Embodiment 2

[0030] In the figure: 1. Separation device; 11. Separation unit; 111. Separation main body; 112. Installation part; 113. Overflow part; 1131. Overflow port; 12. Gas collection hood; 121. Exhaust port; 13. Separation cylinder; 14. Liquid accumulation tank; 141. Liquid discharge port; 15. Feed pipe; 151. Flow splitting joint; 16. Permeable plate; 161. Permeable hole; 2. Liquid discharge pipeline; 31. First pipeline; 32. Second pipeline; 33. Third pipeline; 34. Venturi tube; 4. Storage tank; 51. Hydrogen discharge fan; 52. Air supply pipeline. Detailed implementation mode

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0032] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected" to another component, it can be directly or indirectly connected to the other component, and this "connection" does not limit fixed connection or movable connection. The specific connection method should be judged according to the specific technical problems to be solved.

[0033] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0035] Embodiment 1:

[0036] A hydrogen separation device for a sodium hypochlorite generator, the separation device 1 includes a separation tank body; a liquid discharge port 141 is arranged at the bottom of the separation tank body, and an exhaust port 121 is arranged at the top; it further includes a feed pipe 15, the feed pipe 15 is arranged inside the tank body of the separation tank body, and the feed pipe 15 is provided with a discharge port; a separation unit 11 is arranged below the discharge port;

[0037] Among them, the separation unit 11 includes a separation main body 111, and the separation main body 111 is conical; a separation pool with an upward opening is arranged inside the separation main body 111; the separation pool is conical; the gas-liquid mixture flowing out of the discharge port enters the separation pool for gas-liquid separation, and hydrogen is discharged through the exhaust port 121; the liquid in the conical cavity of the separation unit 11 overflows and accumulates at the bottom of the tank body, and is discharged through the liquid discharge port 141.

[0038] The gas-liquid mixture formed by the sodium hypochlorite solution and hydrogen generated after the saturated brine and softened water are mixed and diluted passes through the feed pipe 15 and enters the separation tank body through the discharge port. The discharge port of the feed pipe 15 is located inside the tank body of the separation tank body, and the gas-liquid mixture flowing out of the discharge port will enter the separation unit 11 located below the discharge port. The separation main body 111 of the separation unit 11 is conical, and a conical separation pool with an upward opening is arranged inside it. The discharge port is located above the separation pool. When the gas-liquid mixture enters the separation pool, it is close to the middle, and then flows along the pool wall of the separation pool towards the outer edge of the separation pool, and finally overflows the separation pool. During this process, the gas-liquid mixture has sufficient time to complete the separation. Compared with a cylindrical separation pool, the conical separation pool avoids the formation of a local vortex area at the bottom of the mixed liquid and the problem that tiny bubbles cannot escape. At the same time, the separation of gas and liquid is closely related to the length of the path for the gas to escape in the liquid; in the conical separation pool, the path for the gas to escape gradually becomes shorter along the flow path of the gas-liquid mixture, which is more conducive to the escape of the gas. Compared with the prior art multi-stage tank bodies where the gas-liquid mixture stays and separates in the tank body, by setting the separation unit 11 in the tank body, the purpose of prolonging the liquid residence time in a single tank body is achieved, and the separation efficiency of a single tank body is improved.

[0039] In a possible embodiment, in order to better collect gas and liquid. The separation tank body includes a gas collection hood 12, a liquid accumulation tank 14 and a separation cylinder 13; the gas collection hood 12 is detachably arranged above the separation cylinder 13, and the exhaust port 121 is arranged at the top of the gas collection hood 12; the liquid accumulation tank 14 is detachably arranged at the bottom of the separation cylinder 13, and the liquid discharge port 141 is arranged below the liquid accumulation tank. Optionally, the gas collection hood 12 and the liquid accumulation tank 14 are connected to the separation cylinder 13 through flanges; a sealing ring is arranged between the flanges. Optionally, the interfaces of the gas collection hood 12, the separation cylinder 13 and the liquid accumulation tank 14 are processed into threads (such as external thread + internal thread), and are connected by rotating and tightening; polytetrafluoroethylene tape is wound on the thread surface or anaerobic sealant is applied; a flat sealing surface is arranged at the end of the thread, and is pressed with a rubber gasket or a metal washer.

[0040] In a possible embodiment, the feed pipe 15 is vertically arranged inside the separation tank; the outlet of the feed pipe 15 is located at the top of the feed pipe 15; wherein, the separation unit 11 further includes a mounting portion 112; the mounting portion 112 is arranged at the lower end of the separation main body 111; an installation cavity adapted to the shape of the feed pipe 15 is arranged inside the mounting portion 112; the separation unit 11 is arranged on the feed pipe 15 through the mounting portion 112; the installation cavity cooperates with the feed pipe 15 to prevent liquid from flowing out of the installation cavity. Optionally, an elastic sleeve is arranged inside the installation cavity, and the inside and outside of the elastic sleeve are respectively extruded with the feed pipe 15 and the installation cavity, and the mounting portion 112 is fixed on the feed pipe 15 through friction; at the same time, the elastic member plays a sealing role to prevent liquid from flowing out through the installation cavity. Optionally, the mounting portion 112 and the feed pipe 15 are in interference fit; during installation, the mounting portion 112 is heated to slightly expand the diameter of the installation cavity, and after being sleeved on the feed pipe 15, it is cooled to achieve interference fit. Preferably, a transition slope is arranged at the lower end of the mounting portion 112, so that the mounting portion 112 smoothly transitions to the feed pipe 15.

[0041] By directly mounting the separation unit 11 on the feed pipe 15, there is no need to additionally arrange a support frame or fixing parts, which simplifies the overall structure of the device, reduces the material cost and installation complexity. Using the feed pipe 15 as the installation carrier of the separation unit 11 avoids the spatial conflict between the separation unit 11 and other components of the tank body, making the equipment layout more compact. At the same time, the outer wall of the feed pipe 15 plays a role in guiding the flow. Specifically, when preparing sodium hypochlorite solution by electrolyzing brine, due to the influence of electrolysis efficiency, during the continuous production process, its overall flow rate and flow velocity are not too high; after the electrolyte overflows from the edge of the separation tank, due to the adhesion of the liquid, it will flow downward along the conical outer surface of the separation main body 111, and then flow downward through the outer surfaces of the mounting portion 112 and the feed pipe 15 until the liquid accumulation tank 14. During this process, the liquid flows along the outer walls of the separation main body, the mounting portion 112 and the feed pipe 15, avoiding the liquid splashing and generating bubbles caused by the free fall of the liquid from a high place, resulting in a reduction in separation efficiency.

[0042] In a possible embodiment, the separation device 1 includes a plurality of separation units 11; the plurality of separation units 11 are sequentially arranged on the feed pipe 15 from top to bottom. By sequentially arranging a plurality of separation units 11 on the feed pipe 15, the flow path of the gas-liquid mixture is increased; multi-stage separation of the gas-liquid mixture can be achieved. Each stage of the separation unit 11 can process the gas-liquid mixture to a certain extent, thereby improving the separation efficiency as a whole. This multi-stage separation method helps to more thoroughly achieve gas-liquid separation. Preferably, the bottom end of the mounting portion 112 of the upper stage is flush with or lower than the opening of the separation pool of the lower stage separation unit 11. In this solution, the liquid flows along the separation main body to the outer surface of the mounting portion 112 and finally flows into the separation pool of the lower stage. Since the separation pool stores liquid, the liquid flows along the surface of the structure during this process, avoiding liquid splashing.

[0043] In a possible embodiment, the separation unit 11 further includes an overflow portion 113; the overflow portion 113 is arranged above the separation main body 111 of the separation unit 11; the overflow portion 113 is cylindrical; the size of the overflow portion 113 is adapted to the size of the opening above the separation main body 111; an overflow port 1131 is arranged on the overflow portion 113; the overflow port 1131 is in an inverted triangular shape. Preferably, a plurality of overflow ports 1131 are arranged on the overflow portion 113; the overflow ports 1131 are evenly distributed on the overflow portion 113. The design of the inverted triangular overflow port 1131 of the overflow portion 113 enables the liquid to start overflowing preferentially from the tip of the inverted triangle when the liquid level in the separation pool reaches the height of the overflow port 1131. The overflow port 1131 diverts the liquid into small thin streams, and the liquid overflows evenly from the inverted triangular opening, avoiding the turbulence caused by local concentrated discharge and further reducing the risk of splashing. The plurality of overflow ports 1131 are evenly distributed, making the liquid overflow more evenly.

[0044] Preferably, for the conical separation pool, its cone angle is α; 90° ≤ α ≤ 120°; through the above solution, on the one hand, it ensures that the separation pool has sufficient depth, increases the residence time of the liquid so that the gas and liquid have sufficient time to escape, and on the other hand, it balances the distance of the bubble escape path, enabling the bubbles to detach more quickly. Preferably, the cone angle of the conical outer wall of the separation main body is equal to that of the separation pool, which can make the liquid adhere to the outer wall of the separation main body and avoid the phenomenon of dripping.

[0045] Preferably, a breathable plate 16 is arranged inside the separation cylinder 13; the breathable plate 16 is arranged above the feed inlet; breathable holes 161 are also arranged on the breathable plate 16. Hydrogen enters the gas collection hood 12 through the separation cylinder 13. Preferably, the breathable holes 161 are arranged on the edge of the breathable plate 16; the feed inlet is aligned with the middle of the breathable plate 16. Through this solution, it is avoided that the enterprise mixture in the feed inlet enters the gas collection hood 12.

[0046] Preferably, a flow splitting joint 151 is provided above the discharge port; a plurality of flow splitting channels are provided on the flow splitting joint 151. The plurality of flow splitting channels avoid the turbulent flow caused by local concentrated discharge and reduce the risk of splashing.

[0047] In a possible embodiment, the sodium hypochlorite generator for which the separation device 1 is used produces a sodium hypochlorite solution of less than or equal to 370 L per hour, the diameter of the separation cylinder 13 is set to 110 - 140 mm; the height of the separator is 700 - 1000 mm; the height of the separation unit 11 (including the overflow part 113, the separation main body and the installation part 112) is 70 - 100 mm, and the diameter of the overflow part 113 is 65 - 80 mm. A total of 5 - 6 stages of separation units 11 are provided in the separation cylinder 13. After measurement, the hydrogen content at the liquid outlet is reduced by 99.9% compared with the hydrogen content at the feed inlet.

[0048] Example 2

[0049] This embodiment provides a hydrogen discharge system for a sodium hypochlorite hydrogen generator. The sodium hypochlorite generator includes a reaction system and a storage tank 4. The hydrogen discharge system includes the hydrogen separation device 1 as described above; the hydrogen discharge system further includes a hydrogen discharge power mechanism, a hydrogen discharge pipeline and a liquid discharge pipeline 2; the hydrogen discharge pipeline includes a first pipeline 31 and a second pipeline 32;

[0050] Among them, the hydrogen discharge power mechanism is used to transport gas into the storage tank 4;

[0051] Among them, the second pipeline 32 is arranged at the top of the storage tank 4 and is used to discharge the gas in the tank;

[0052] Among them, the exhaust port 121 of the hydrogen separation device 1 is communicated with the second pipeline 32 through the first pipeline 31; the feed pipe 15 is communicated with the reaction system; the liquid discharge port 141 is communicated with the storage tank 4 through the liquid discharge pipeline 2. Preferably, the second pipeline 32 discharges air upward.

[0053] In this embodiment, the gas-liquid mixture (containing sodium hypochlorite solution and hydrogen) generated by the sodium hypochlorite generator reaction system enters the hydrogen separation device 1 through the feed pipe 15. In the separation device 1, hydrogen gathers upward due to its low density and enters the first pipeline 31 through the exhaust port 121 at the top of the separation tank; the sodium hypochlorite solution settles downward and is transported to the storage tank 4 through the drainage pipe 2 through the drainage port 141. The separated hydrogen is collected from the exhaust port 121 through the first pipeline 31 into the second pipeline 32 (the gas discharge pipeline at the top of the storage tank 4), and finally discharged from the system through the second pipeline 32. The hydrogen discharge power mechanism (such as an explosion-proof fan or a compressed air system) transports gas (such as air or nitrogen) into the storage tank 4 to reduce the local concentration of hydrogen in the tank so that it is always below the lower explosion limit (LEL); the low-hydrogen content air in the tank is then mixed with the hydrogen in the first pipeline 31 through the second pipeline 32, and finally reduces the concentration of hydrogen discharged by the system. In theory, by controlling the air intake of the fan, it can be ensured that the concentration of discharged hydrogen is far below the lower explosion limit. The hydrogen discharge power mechanism completely discharges hydrogen through continuous gas flow to prevent hydrogen from accumulating in the storage tank 4 or in the pipeline. The hydrogen separation and hydrogen discharge processes are seamlessly connected, and the separated hydrogen is directly guided to the discharge port through the pipeline without intermediate storage, shortening the processing process.

[0054] In a possible embodiment, the hydrogen exhaust power mechanism includes a hydrogen exhaust fan 51 and an air supply pipe 52; the hydrogen exhaust fan 51 delivers air into the storage tank 4 through the air supply pipe 52; the hydrogen exhaust fan 51 is an explosion-proof fan. The hydrogen exhaust pipeline also includes a venturi 34, which is arranged on the second pipe 32, and the first pipe 31 is connected to the venturi 34; the high-speed airflow in the second pipe 32 generates a negative pressure in the venturi 34, and the hydrogen in the first pipe 31 is sucked into the venturi 34 and mixed with the gas in the second pipe 32 before being discharged; the first pipe maintains a negative pressure, reducing the possibility of hydrogen leakage; at the same time, the venturi generates negative pressure through high-speed airflow, there is no open flame and no need for a separate negative pressure device, which reduces the cost. The positive pressure environment formed by the air supply can prevent the backflow of external air, and at the same time drive the gas in the tank (including residual hydrogen) to flow to the second pipe 32, ensuring that the hydrogen is actively discharged rather than accumulated. The forced mixing of hydrogen and air is achieved through the venturi tube 34, so that the concentration of hydrogen in the exhaust gas is further reduced, thereby improving the safety of the exhaust. The venturi tube 34 utilizes the kinetic energy of the original high-speed airflow in the second pipe 32 to generate negative pressure, and hydrogen can be sucked without additional power, thereby reducing energy consumption.

[0055] Preferably, the liquid discharge pipeline 2 includes a vertical section arranged above the storage tank 4; the hydrogen discharge pipeline also includes a third pipeline 33; the third pipeline 33 is arranged vertically; the vertical section is connected to the first pipeline 31 through the third pipeline 33. In this solution, multi-stage hydrogen discharge is achieved at different links of sodium hypochlorite entering the storage tank 4 through the first pipeline 31, the second pipeline 32 and the third pipeline 33, which is conducive to improving the efficiency of hydrogen discharge.

[0056] This specific embodiment is only an interpretation of the present invention and does not limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A hydrogen separation device for a sodium hypochlorite generator, characterized in that: The separation device includes a separation tank body; a liquid discharge port is arranged at the bottom of the separation tank body, and an exhaust port is arranged at the top; it further includes a feed pipe, the feed pipe is arranged inside the tank body of the separation tank body, and the feed pipe is provided with a discharge port; a separation unit is arranged below the discharge port; The separation unit includes a separation main body, and the separation main body is conical; a separation pool with an upward opening is arranged inside the separation main body; the separation pool is conical.

2. The hydrogen separation device of the sodium hypochlorite generator according to claim 1, characterized in that: The separation tank body includes a gas collection hood, a liquid accumulation tank and a separation cylinder; the gas collection hood is detachably arranged above the separation cylinder, and the exhaust port is arranged at the top of the gas collection hood; the liquid accumulation tank is detachably arranged at the bottom of the separation cylinder, and the liquid discharge port is arranged below the liquid accumulation tank.

3. The hydrogen separation device of the sodium hypochlorite generator according to claim 1, characterized in that: The feed pipe is vertically arranged inside the separation tank; the discharge port of the feed pipe is located at the top of the feed pipe; The separation unit further includes a mounting part; the mounting part is arranged at the lower end of the separation main body; an installation cavity adapted to the shape of the feed pipe is arranged inside the mounting part; the separation unit is arranged on the feed pipe through the mounting part; the installation cavity cooperates with the feed pipe to prevent liquid from flowing out of the installation cavity.

4. The hydrogen separation device of the sodium hypochlorite generator according to claim 2, characterized in that: The separation device includes a plurality of separation units; the plurality of separation units are sequentially arranged on the feed pipe from top to bottom.

5. The hydrogen separation device of the sodium hypochlorite generator according to claim 4, characterized in that: The separation unit further includes an overflow part; the overflow part is arranged above the separation main body of the separation unit; the overflow part is cylindrical; the size of the overflow part is adapted to the size of the upward opening of the separation main body; an overflow port is arranged on the overflow part; the overflow port is in an inverted triangle shape.

6. The hydrogen separation device of the sodium hypochlorite generator according to claim 5, characterized in that: For the conical separation pool, its cone angle is α; 90° ≤ α ≤ 120°.

7. The hydrogen separation device of the sodium hypochlorite generator according to claim 5, characterized in that: A breathable plate is arranged inside the separation cylinder; the breathable plate is arranged above the feed port; breathable holes are also arranged on the breathable plate.

8. The hydrogen separation device of the sodium hypochlorite generator according to claim 5, characterized in that: A shunt joint is arranged above the discharge port; a plurality of shunt channels are arranged on the shunt joint.

9. A hydrogen discharge system for a sodium hypochlorite hydrogen generator, the sodium hypochlorite generator comprising a reaction system and a storage tank, characterized in that: The hydrogen discharge system includes the hydrogen separation device as described in claim 1; the hydrogen discharge system further includes a hydrogen discharge power mechanism, a hydrogen discharge pipeline and a liquid discharge pipeline; the hydrogen discharge pipeline includes a first pipeline and a second pipeline; The hydrogen discharge power mechanism is used to transport gas into the storage tank; The second pipeline is arranged at the top of the storage tank and is used to discharge the gas in the tank; The exhaust port of the hydrogen separation device is communicated with the second pipeline through the first pipeline; the feed pipe is communicated with the reaction system; the liquid discharge port is communicated with the storage tank through the liquid discharge pipeline.

10. The hydrogen discharge system for a sodium hypochlorite hydrogen generator according to claim 9, characterized in that: The hydrogen discharge power mechanism includes a hydrogen discharge fan and a blowing pipeline; the hydrogen discharge fan sends air into the storage tank through the blowing pipeline; The hydrogen discharge pipeline further includes a Venturi tube, the Venturi tube is arranged on the second pipeline, and the first pipeline is communicated with the Venturi tube; the high-speed airflow in the second pipeline generates negative pressure in the Venturi tube, sucking the hydrogen in the first pipeline into the Venturi tube to be mixed with the gas in the second pipeline and then discharged; The liquid discharge pipeline includes a vertical section arranged above the storage tank; the hydrogen discharge pipeline further includes a third pipeline; the third pipeline is vertically arranged; the vertical section is communicated with the first pipeline through the third pipeline.

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