Hydrogen discharge and finished solution anti-precipitation system of sodium hypochlorite generator

Abstract

The utility model relates to the field of sodium hypochlorite generator, especially sodium hypochlorite generator hydrogen discharge and finished product solution anti -precipitation system, including electrolytic cell, separator, storage tank, and fan is connected storage tank, separator respectively through first air path, second air path, the top of storage tank is connected first exhaust pipe, installs the cloth gas device of intercommunication with second air path in storage tank, still installs storage tank liquid inlet pipe on storage tank, and the separator includes mixing chamber, separating chamber, collection chamber from top to bottom, the top of mixing chamber is connected second exhaust pipe, and the lateral wall on mixing chamber lower segment is communicated second air inlet pipe, and second air inlet pipe is communicated second air path, is equipped with the baffle between mixing chamber and separating chamber, and the separating chamber export is set up on the baffle, and the lateral wall on separating chamber is set up separating chamber import, and separating chamber import is communicated electrolytic cell discharge pipe, and separating chamber connects collection chamber, and collection chamber is communicated with storage tank through storage tank liquid inlet pipe, and the system is high in security, and basically does not need maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of sodium hypochlorite generators, and in particular to a system for hydrogen removal and precipitation prevention of finished solution in a sodium hypochlorite generator. Background Technology

[0002] A sodium hypochlorite generator is a device that produces sodium hypochlorite solution by electrolyzing brine. During the electrolysis process, hydrogen gas is produced as a byproduct. Hydrogen is a flammable and explosive gas; it can cause an explosion upon contact with a source of ignition or static electricity, posing a serious safety hazard. Therefore, the hydrogen gas must be diluted to a safe concentration before being discharged. Simultaneously, the finished sodium hypochlorite solution produced by electrolysis may combine with hydroxide ions or other anions in the sodium hypochlorite solution due to impurities in the raw brine or unstable soft water quality, forming insoluble hydroxide or salt precipitates in the storage tank. If these precipitates are not cleaned promptly, they can clog pipelines and affect subsequent applications.

[0003] Currently, domestically produced sodium hypochlorite generators generally employ methods such as partial hydrogen venting within the electrolytic cell and dilution and venting hydrogen by blowing air into the sodium hypochlorite solution storage tank using a blower. However, because the sodium hypochlorite solution storage tank is made of corrosion-resistant plastic, the sealing requirements for the tank interfaces are stringent. Poor sealing or aging and deformation of the plastic over prolonged use can easily lead to hydrogen leakage, posing a safety hazard. Furthermore, when the solution level in the tank is low, the amount of hydrogen inside is relatively high, also presenting a safety risk. In addition, sodium hypochlorite solution storage tanks generally do not employ anti-precipitation measures; if precipitation occurs, production must be stopped for cleaning, which undoubtedly affects production efficiency.

[0004] Based on this, this utility model designs a hydrogen removal system for a sodium hypochlorite generator and a system to prevent precipitation of the finished solution, in order to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a system for hydrogen removal from a sodium hypochlorite generator and for preventing precipitation of the finished solution, thereby solving the problems in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system includes an electrolytic cell, a separator, and a storage tank. A blower is connected to the storage tank and the separator via a first air path and a second air path, respectively. The top of the storage tank is connected to a first exhaust duct. A gas distribution device connected to the second air path is installed inside the storage tank. A storage tank inlet pipe is also installed on the storage tank. The separator includes a mixing chamber, a separation chamber, and a collection chamber from top to bottom. The top of the mixing chamber is connected to a second exhaust duct. A second air inlet pipe is connected to the lower side wall of the mixing chamber and is connected to the second air path. A partition is provided between the mixing chamber and the separation chamber. A separation chamber outlet is opened on the partition. A separation chamber inlet is opened on the side wall of the separation chamber and is connected to the electrolytic cell discharge pipe. The lower end of the separation chamber is conical and connected to the collection chamber. The collection chamber is connected to the storage tank via a storage tank inlet pipe. The inlet of the storage tank inlet pipe is located at the bottom of the side wall of the collection chamber.

[0008] Several mixing fans are installed inside the mixing chamber, and an orifice plate is installed below the mixing fans. The second air inlet pipe is located below the orifice plate in the horizontal direction.

[0009] The mixing fan is installed at the intersection of the cross support rods, and a support ring is fixed on the cross support rods. The mixing fan is located inside the support ring.

[0010] A first air volume switch is installed on the first airflow path, and a second air volume switch is installed on the second airflow path.

[0011] The gas distribution device includes a first air inlet pipe, which extends into the bottom of the tank and is connected to a vertical central pipe through a horizontal diffuser pipe. The outer periphery of the central pipe is uniformly connected to radial gas distribution pipes. The end of the gas distribution pipe extends into an arc-shaped extension pipe that fits against the inner wall of the storage tank. Nozzles are installed on the gas distribution pipe.

[0012] The bottom of the central tube is fixed with a base, and a fixing groove is opened at the bottom of the storage tank, into which the base is embedded.

[0013] This utility model has the following beneficial effects:

[0014] 1. After installing the gas-liquid separator, hydrogen and sodium hypochlorite are completely separated, preventing hydrogen from entering the sodium hypochlorite storage tank and improving the safety of the storage tank.

[0015] 2. The separator adopts the liquid seal separation principle, which makes the separation more complete and pure. The separator is made of steel lined with plastic, which not only improves the strength of the separator, but also makes the interface seal more tight, ensuring overall safety.

[0016] 3. By making full use of the hydrogen dilution blower and adopting air agitation technology for sodium hypochlorite solution, the problem of sedimentation in the sodium hypochlorite storage tank clogging the discharge pipe is avoided. The machine has two functions, is simple to configure, and is more energy-efficient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram showing the connections of each device in this system;

[0019] Figure 2 This is a schematic diagram of the separator structure;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the storage tank;

[0021] Figure 4 This is a top view of the air distribution pipe structure.

[0022] Figure 5 This is a schematic diagram of a hybrid sector structure.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Fan; 2. Electrolytic cell; 3. Separator; 4. Storage tank; 5. First air duct; 6. Second air duct; 7. First air volume switch; 8. Second air volume switch; 9. Flow limiting valve; 10. First exhaust duct; 11. Second exhaust duct; 12. First air inlet duct; 13. Second air inlet duct; 14. Separation chamber inlet; 15. Drain pipe; 16. Storage tank inlet pipe; 17. Electrolytic cell outlet pipe; 18. Separation chamber outlet; 19. Mixing fan; 20. Mixing chamber; 21. Separation chamber; 22. Orifice plate; 23. Base; 24. Fixing groove; 25. Central pipe; 26. Diffuser pipe; 27. Air distribution pipe; 28. Extension pipe; 29. ​​Nozzle; 30. Support rod; 31. Support ring; 32. Collection chamber. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It should be understood that the terms "upper", "middle", "outer", "inner", "lower" etc., which indicate orientation or positional relationship, are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0026] The attached figures illustrate specific embodiments of this utility model, such as... Figures 1-5As shown, the sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system includes an electrolytic cell 2, a separator 3, and a storage tank 4. The electrolytic cell 2 is the core reaction device for sodium hypochlorite production, producing sodium hypochlorite solution and hydrogen gas through electrolysis. A blower 1 is connected to the storage tank 4 and the separator 3 via a first air path 5 and a second air path 6, respectively. The blower 1 is the power source for the gas path of this system. A first air volume switch 7 is installed on the first air path 5, and a second air volume switch 8 is installed on the second air path 6. The first air path 5 and the second air path 6 supply air to the gas distribution device and the separator 3, respectively, and the airflow is adjusted by regulating the opening and closing of the switches. The top of the storage tank 4 is connected to the first exhaust duct 10. An air distribution device connected to the second air passage 6 is installed inside the storage tank 4. The air distribution device includes a first air inlet duct 12, which extends into the bottom of the tank and connects to a vertical central duct 25 via a horizontal diffuser 26. A base 23 is fixed to the bottom of the central duct 25. A fixing groove 24 is formed at the bottom of the storage tank 4, and the base 23 is embedded in the fixing groove 24, increasing the stability of the air distribution device. Radial air distribution pipes 27 are evenly connected to the outer periphery of the central duct 25. An arc-shaped extension pipe 28 extends from the end of the air distribution pipe 27, fitting against the inner wall of the storage tank 4. A nozzle 29 is installed on the air distribution pipe 27. The storage tank 4 is also equipped with a storage tank inlet pipe 16. The separator 3 includes a mixing chamber 20, a separation chamber 21, and a collection chamber 32 from top to bottom. The top of the mixing chamber 20 is connected to a second exhaust pipe 11, and the lower side wall of the mixing chamber 20 is connected to a second air inlet pipe 13. Several mixing fans 19 are installed inside the mixing chamber 20. The mixing fans 19 are installed at the intersection of the cross support rods 30. A support ring 31 is fixed on the cross support rods 30, and the mixing fans 19 are located inside the support ring 31, which increases the stability of the mixing fans 19. An orifice plate 22 is installed below the mixing fans 19, and the second air inlet pipe 13 is located below the orifice plate 22 in the horizontal direction. The second air inlet pipe 13 is connected to the second air passage 6. A partition 15 is provided between the mixing chamber 20 and the separation chamber 21. A separation chamber outlet 18 is opened on the partition 15. A separation chamber inlet 14 is opened on the side wall of the separation chamber 21. The separation chamber inlet 14 is connected to the electrolytic cell discharge pipe 17. The lower end of the separation chamber 21 is conical, which is conducive to the collection of liquid. The liquid is collected in the collection chamber 32 below through the separation chamber 21. The collection chamber 32 is connected to the storage tank 4 through the storage tank inlet pipe 16. The inlet of the storage tank inlet pipe 16 is located at the bottom of the side wall of the collection chamber 32. The sodium hypochlorite solution submerges the storage tank, which plays a role in liquid sealing.

[0027] The usage method of this embodiment is as follows:

[0028] Turn on the blower 1. According to the system operation requirements, adjust the first air volume switch 7 and the second air volume switch 8 to control the blower 1 to deliver air volume to the storage tank 4 and the separator 3 respectively. The first air path 5 delivers the airflow generated by the blower 1 to the storage tank 4, and the second air path 6 delivers the airflow to the mixing chamber 20 of the separator 3.

[0029] Meanwhile, during the sodium hypochlorite production process, electrolytic cell 2 generates a mixture of hydrogen and sodium hypochlorite. This mixture enters the separation chamber 21 of separator 3 through the electrolytic cell outlet pipe 17 in a swirling motion. Due to the lower density of hydrogen, it rises through the separation chamber outlet 18 to the mixing chamber 20 via the swirling impact. There, it merges with the air entering through the second air inlet pipe 13 between the orifice plate 22 and the partition plate 15. After mixing through the orifice plate 22, the mixture passes through several mixing fans 19 to dilute the hydrogen. Finally, it is discharged through the second exhaust pipe 11 connected to the top of the mixing chamber 20, preventing hydrogen accumulation in the system and ensuring production safety. The remaining sodium hypochlorite solution flows into the collection chamber 32 and into the storage tank 4 through the storage tank inlet pipe 16 at the bottom of the collection chamber 32.

[0030] On the other hand, the airflow delivered by the blower 1 through the first air passage 5 enters the gas distribution device of the storage tank 4, and after being pressurized by the diffuser 26, it is evenly sprayed into the storage tank 4 through the nozzle 29, forming a uniform airflow field. This achieves static stirring of the solution in the storage tank 4, preventing precipitation and carrying away residual hydrogen gas that was not separated by the separator 3. The first exhaust pipe 10 connected to the top of the storage tank 4 can discharge the gas inside the storage tank 4. Under the stirring action of the airflow generated by the gas distribution device, the solution remains in a uniformly mixed state in the storage tank 4, preventing precipitation and facilitating subsequent use.

[0031] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods.

Claims

1. A system for hydrogen removal and precipitation prevention of sodium hypochlorite generator and finished solution, comprising an electrolytic cell (2), a separator (3), and a storage tank (4), characterized in that: The blower (1) is connected to the storage tank (4) and the separator (3) through the first air passage (5) and the second air passage (6) respectively. The top of the storage tank (4) is connected to the first exhaust pipe (10). An air distribution device connected to the second air passage (6) is installed inside the storage tank (4). The storage tank (4) is also equipped with a storage tank inlet pipe (16). The separator (3) includes a mixing chamber (20), a separation chamber (21), and a collection chamber (32) from top to bottom. The top of the mixing chamber (20) is connected to the second exhaust pipe (11). The lower side wall of the mixing chamber (20) is connected to the second air inlet pipe (13). The second air inlet pipe (13) is connected to the second air passage (6). A partition (15) is provided between the mixing chamber (20) and the separation chamber (21). A separation chamber outlet (18) is opened on the partition (15). A separation chamber inlet (14) is opened on the side wall of the separation chamber (21). The separation chamber inlet (14) is connected to the electrolytic cell discharge pipe (17). The lower end of the separation chamber (21) is conical and connected to the collection chamber (32). The collection chamber (32) is connected to the storage tank (4) through the storage tank inlet pipe (16). The inlet of the storage tank inlet pipe (16) is located at the bottom of the side wall of the collection chamber (32).

2. The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system according to claim 1, characterized in that: Several mixing fans (19) are installed inside the mixing chamber (20). A perforated plate (22) is installed below the mixing fans (19). The second air inlet pipe (13) is located below the perforated plate (22) in the horizontal direction.

3. The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system according to claim 1, characterized in that: The mixing fan (19) is installed at the intersection of the cross support rod (30), and the support ring (31) is fixed on the cross support rod (30). The mixing fan (19) is located inside the support ring (31).

4. The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system according to claim 1, characterized in that: A first air volume switch (7) is installed on the first air duct (5), and a second air volume switch (8) is installed on the second air duct (6).

5. The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system according to claim 1, characterized in that: The gas distribution device includes a first air inlet pipe (12), which extends into the bottom of the tank and is connected to a vertical central pipe (25) through a horizontal diffuser pipe (26). The outer periphery of the central pipe (25) is uniformly connected to radial gas distribution pipes (27). The end of the gas distribution pipe (27) extends into an arc-shaped extension pipe (28), which fits against the inner wall of the storage tank (4). A nozzle (29) is installed on the gas distribution pipe (27).

6. The sodium hypochlorite generator hydrogen removal and finished solution anti-precipitation system according to claim 5, characterized in that: The bottom of the central tube (25) is fixed with a base (23), and a fixed groove (24) is opened at the bottom of the storage tank (4), with the base (23) embedded in the fixed groove (24).

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