Energy-saving reaction kettle for chlor-alkali electrolysis

Abstract

The utility model belongs to the technical field of reaction kettles, and discloses an energy-saving reaction kettle for chlor-alkali electrolysis, which comprises a reaction bin body and a supporting bin sleeved at the bottom of the reaction bin body, a rotating rod is arranged in the reaction bin body and movably connected with the reaction bin body, a driving wheel and a motor are respectively arranged in the supporting bin, and the rotating rod is movably connected with the driving wheel. The driving wheel is connected with the bottom surface of the reaction bin body; the driving wheel is meshed with a driven wheel, the rotating direction of the driving wheel is opposite to that of the driven wheel, the motor drives the driving wheel to drive the reaction bin body to rotate, and meanwhile the driving wheel drives the driven wheel to drive the rotating rod to rotate reversely. According to the energy-saving reaction kettle for chlor-alkali electrolysis, the stirring speed can be increased, so that the problem that the electrolytic reaction speed is low due to the fact that materials cannot be fully mixed is solved.

Description

Technical Field

[0001] This utility model belongs to the field of reaction vessel technology, specifically an energy-saving reaction vessel for chlor-alkali electrolysis. Background Technology

[0002] The core principle of chlor-alkali production is to produce chlorine, hydrogen, and sodium hydroxide through the electrolysis of brine. Chlor-alkali electrolysis requires a controlled reaction environment to ensure efficient and safe electrolysis. Currently, reaction vessels are commonly used in industrial production as chlor-alkali electrolysis equipment. The interior of the reaction vessel is typically made of steel or stainless steel, possessing high strength and corrosion resistance to meet the corrosive requirements of the brine electrolysis system. Furthermore, during the electrolysis reaction, parameters such as temperature, pressure, and stirring speed within the reaction vessel can be precisely controlled, thereby ensuring the effectiveness and safety of the reaction process.

[0003] Existing reactors typically have a jacketed layer inside the outer shell, heated by a heating medium (hot water or steam). To increase the reaction rate of the materials inside the reactor, a stirring device is installed, which agitates the materials by rotating it. For example, a mother liquor recovery reactor (referring to announcement number 202421856070.2) has a fixed frame on the top of the reactor lid, a first motor fixed on top of the frame, a stirring rod fixed on the output shaft of the first motor, and stirring blades fixed on the surface of the stirring rod. In use, driving the first motor rotates the stirring rod, which in turn rotates the stirring blades, thus agitating the materials inside the reactor. Although existing reactors can agitate materials in electrolyzed brine, the following problems exist:

[0004] (1) When stirring materials, the existing reactor uses a motor to drive the stirring rod to rotate while the reactor body remains stationary. This results in slow stirring speed and long stirring time, leading to high energy consumption of the motor. (2) Since chlorine, hydrogen and sodium hydroxide are produced after the salt water is electrolyzed, the composition of the materials in the electrolysis system is complex. The stirring speed is slow because the stirring rod is rotated, which makes it impossible for the materials in the electrolysis system to be fully mixed. This results in a slow electrolysis reaction rate, long electrolysis time and high energy consumption.

[0005] In summary, existing reactors have slow stirring speeds, resulting in long stirring and electrolysis times and high energy consumption. Utility Model Content

[0006] The purpose of this invention is to provide an energy-saving reactor for chlor-alkali electrolysis, which has a fast stirring speed, shortens the stirring and electrolysis time, and saves energy, thereby solving the problem in the background art where the reactor has a slow stirring speed, resulting in long stirring and electrolysis times and high energy consumption.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An energy-saving reactor for chlor-alkali electrolysis includes a reaction chamber and a support chamber fitted around the bottom of the reaction chamber. A rotating rod is installed inside the reaction chamber and is movably connected to the reaction chamber. A drive wheel and a motor are installed inside the support chamber. The drive wheel is connected to the bottom surface of the reaction chamber. A driven wheel meshes with the drive wheel, and the drive wheel and the driven wheel rotate in opposite directions. The motor drives the drive wheel to rotate the reaction chamber, while the drive wheel drives the driven wheel to rotate the rotating rod in the opposite direction.

[0009] Further specified, an annular slide seat is provided at the top of the reaction chamber, and a slider is provided at the upper end of the rotating rod; the slider is engaged in the annular slide seat.

[0010] Furthermore, guide blocks are provided on both sides of the lower end of the reaction chamber, and guide grooves are provided on the upper end of the inner wall of the support chamber, with the guide blocks and guide grooves slidably connected.

[0011] Furthermore, stirring blades are fixed at equal intervals on both sides of the rotating rod.

[0012] Further defined, there are one or more rotating rods and driven wheels, with the driven wheels evenly distributed in a circle on the outer wall of the driving wheel; the rotating rods are vertically distributed along the axial direction of the reaction chamber, and the positions of the rotating rods correspond to the positions of the driven wheels, and are connected one by one.

[0013] Furthermore, the support compartment is further equipped with a protective compartment, and the motor is placed inside the protective compartment.

[0014] Further specifying, the energy-saving reactor for chlor-alkali electrolysis also includes a hot water transfer pipe and a heat-conducting seat located above the hot water transfer pipe. The hot water transfer pipe is installed inside the support chamber, and both ends of the hot water transfer pipe are connected to the outside of the support chamber. The heat-conducting seat is placed on the outer bottom surface of the reaction chamber. The heat-conducting seat is in contact with the pipe wall of the hot water transfer pipe.

[0015] Further specified, there are multiple heat-conducting seats, and the multiple heat-conducting seats are evenly distributed on the outer bottom surface of the reaction chamber; all of the multiple heat-conducting seats are in contact with the pipe wall of the hot water pipe.

[0016] Further specifying, each of the two symmetrical side walls of the support chamber is provided with a receiving block, the receiving block is located below the hot water pipe, and the receiving block is provided with an anti-slip protrusion; the receiving block is connected to the hot water pipe through the anti-slip protrusion.

[0017] Further specified, the reaction chamber is provided with an exhaust pipe and a feed pipe respectively; both the exhaust pipe and the feed pipe are connected to the inside of the reaction chamber.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, the motor drives the driving wheel to rotate, which in turn drives the driven wheel to rotate; while the driving wheel drives the reaction chamber to rotate, the driven wheel drives the rotating rod to rotate. The driving wheel and the driven wheel rotate in opposite directions, which causes the reaction chamber and the rotating rod to rotate in opposite directions, accelerating the stirring speed of the material. The stirring speed is fast and the stirring time is shortened. At the same time, the fast stirring speed makes the material more thoroughly mixed, which is conducive to improving the electrolysis reaction rate, shortening the electrolysis reaction time, and saving energy consumption.

[0020] 2. This utility model, by setting the limiting effect between the guide groove and the guide block, is conducive to the stable rotation of the reaction chamber; furthermore, by the sliding limit formed between the annular slide seat and the slider, it is conducive to the stable rotation of the rotating rod, ensuring the stability of the reaction vessel when the reaction chamber and the rotating rod rotate in opposite directions.

[0021] 3. In this utility model, the heat conduction and heat transfer effect of the heat conduction seat and the hot water pipe can reduce the heat loss at the lower end of the reaction chamber. The heat is transferred to the hot water pipe through the heat conduction seat, which can heat the water in the hot water pipe, so as to realize the full and effective utilization of heat and achieve the purpose of energy saving.

[0022] 4. In this utility model, by setting a receiving block and an anti-slip protrusion, the hot water pipe is supported to ensure its stability. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the reaction chamber of this utility model;

[0026] Figure 4 This is a schematic diagram of the cross-sectional structure of the support compartment of this utility model;

[0027] Figure 5 This is a schematic diagram of the rotating rod and slider structure of this utility model;

[0028] In the picture:

[0029] 1. Rotating rod; 2. Stirring blade; 3. Reaction chamber; 4. Clearance groove; 5. Guide block; 6. Support chamber; 7. Water outlet pipe; 8. Protective chamber; 9. Motor; 10. Drive wheel; 11. Water inlet pipe; 12. Driven wheel; 13. Feed pipe; 14. Sliding block; 15. Annular slide seat; 16. Guide groove; 17. Hot water transfer pipe; 18. Anti-slip protrusion; 19. Receiving block; 20. Heat-conducting seat; 21. Transparent observation layer; 22. Gas outlet pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0033] Example 1

[0034] See Figure 1 and Figure 2 The energy-saving reactor for chlor-alkali electrolysis provided in this embodiment includes a reaction chamber 3 and a support chamber 6 fitted on the bottom of the reaction chamber 3. A rotating rod 1 is provided inside the reaction chamber 3 and is movably connected to the reaction chamber 3. A drive wheel 10 and a motor 9 are respectively provided inside the support chamber 6. The drive wheel 10 is connected to the bottom surface of the reaction chamber 3. A driven wheel 12 is engaged on the drive wheel 10, and the drive wheel 10 and the driven wheel 12 rotate in opposite directions. The motor 9 drives the drive wheel 10 to rotate the reaction chamber 3, and at the same time, the drive wheel 10 drives the driven wheel 12 to rotate the rotating rod 1 in the opposite direction.

[0035] Specifically, reaction chamber 3 is a cylindrical reaction chamber used to electrolyze brine in chlor-alkali production, so that the brine is electrolyzed to produce chlorine, hydrogen and sodium hydroxide.

[0036] Specifically, the support chamber 6 is a groove-shaped structure with an opening at the top, and its upper opening fits onto the lower end of the reaction chamber 3.

[0037] See Figure 5 Preferably, multiple stirring blades 2 are fixed at equal intervals on both sides of the rotating rod 1, and the stirring blades 2 accelerate the stirring of the material.

[0038] In this embodiment, an annular slide seat 15 is provided at the top of the reaction chamber 3, and a slider 14 is provided at the upper end of the rotating rod 1; the slider 14 is engaged in the annular slide seat 15. In use, the reaction chamber 3 limits the slider 14 through the annular slide seat 15, which is beneficial to the stability of the rotation of the rotating rod 1.

[0039] See Figure 1 Specifically, two sliders 14 are provided on the two symmetrical sidewalls at the top of the rotating rod 1, that is, there are two sliders 14, which are symmetrically arranged about the axis of the rotating rod 1; an annular sliding seat 15 is provided at the top of the reaction chamber 3, and the number and position of the annular sliding seat 15 correspond to the number and position of the sliders 14, so that the annular sliding seat 15 and the slider 14 are slidably connected, which enhances stability and balance.

[0040] In this embodiment, guide blocks 5 are provided on both sides of the lower end of the reaction chamber 3, and guide grooves 16 are provided on the upper end of the inner wall of the support chamber 6, with the guide blocks 5 slidably connected to the guide grooves 16. In use, the support chamber 6 limits the guide blocks 5 through the guide grooves 16, which is beneficial to the stability of the rotation of the reaction chamber 3.

[0041] See Figure 1 , Figure 3 and Figure 4 Guide blocks 5 are provided on the symmetrical sidewalls at the lower part of the reaction chamber 3, and guide grooves 16 are provided at the upper end of the inner wall of the support chamber 6. When the upper end of the support chamber 6 is fitted onto the lower part of the reaction chamber 3, the guide grooves 16 and guide blocks 5 are slidably connected. Preferably, a clearance groove 4 is provided at the middle of the upper end of the support chamber 6 corresponding to the reaction chamber 3 to facilitate smooth connection between the support chamber 6 and the reaction chamber 3.

[0042] In this embodiment, there are one or more rotating rods 1 and driven wheels 12. Multiple driven wheels 12 are evenly distributed in a circle on the outer wall of the driving wheel 10. Multiple rotating rods 1 are vertically distributed in the axial direction of the reaction chamber 3. The position of the rotating rod 1 corresponds to the position of the driven wheel 12 and they are connected one by one.

[0043] In practice, there may be one, two, three, or more rotating rods 1.

[0044] See Figure 1 Preferably, there are two rotating rods 1. Two sliders 14 are provided on both sides of the top of each rotating rod 1. Correspondingly, two annular sliding seats 15 are provided at the top positions of the reaction chamber 3 on both sides of each rotating rod 1, allowing the annular sliding seats 15 to slide and connect with the sliders 14, enhancing stability and balance. There are two rotating rods 1, and also two driven wheels 12, symmetrically distributed on the outer periphery of the driving wheel 10, both meshing with the driving wheel 10. Each driven wheel 12 is connected to a corresponding rotating rod 1. Specifically, driven wheels 12 mesh on both sides of the driving wheel 10, and the upper end of the driven wheel 12 is fixedly connected to the lower end of the rotating rod 1.

[0045] In this embodiment, a protective chamber 8 is also provided inside the support chamber 6, and the motor 9 is placed inside the protective chamber 8. The output end of the motor 9 is fixedly connected to the drive end of the drive wheel 10.

[0046] In this embodiment, the reaction chamber 3 is equipped with an exhaust pipe 22 and a feed pipe 13; both the exhaust pipe 22 and the feed pipe 13 are connected to the inside of the reaction chamber 3. In use, the material to be reacted (salt water) can be introduced into the reaction chamber 3 through the feed pipe 13, and the gas generated by the electrolysis reaction can be discharged from the reaction chamber 3 through the exhaust pipe 22 for collection.

[0047] In this embodiment, a transparent observation layer 21 is also provided on the reaction chamber 3 to observe the internal condition of the reaction chamber 3.

[0048] In this embodiment, brine is added to the reaction chamber 3 through the feed pipe 13 to heat the reaction chamber 3 using existing heating methods, such as heating jackets, heating wires, or other conventional heating methods. Simultaneously, the motor 9 is started to drive the drive wheel 10 to rotate, which in turn drives the driven wheel 12. The drive wheel 10 drives the reaction chamber 3 to rotate, and the driven wheel 12 drives the rotating rod 1 to rotate. The stirring blades 2 rotate accordingly, agitating the materials within the reaction chamber 3. Because the drive wheel 10 and the driven wheel 12 rotate in opposite directions, the reaction chamber 3 and the rotating rod 1 rotate in opposite directions, which accelerates the stirring speed, shortens the stirring time, and saves energy consumption of the motor 9. Furthermore, the fast stirring speed allows for rapid and thorough mixing of the brine and the products of the electrolysis reaction, accelerating the electrolysis process, increasing the reaction rate, shortening the electrolysis reaction time, and reducing heat consumption during the electrolysis reaction, thereby achieving energy saving.

[0049] Example 2

[0050] See Figure 1 Based on Example 1, the energy-saving reactor for chlor-alkali electrolysis provided in this example also includes a hot water transfer pipe 17 and a heat-conducting seat 20 located above the hot water transfer pipe 17. The hot water transfer pipe 17 is installed inside the support chamber 6, and both ends of the hot water transfer pipe 17 are connected to the outside of the support chamber 6. The heat-conducting seat 20 is placed on the outer bottom surface of the reaction chamber body 3. The heat-conducting seat 20 is in contact with the pipe wall of the hot water transfer pipe 17.

[0051] In this embodiment, there are multiple heat-conducting seats 20, and the multiple heat-conducting seats 20 are evenly distributed on the outer bottom surface of the reaction chamber 3; the multiple heat-conducting seats 20 are all in contact with the pipe wall of the hot water pipe 17.

[0052] See Figure 1 and Figure 2The lower end of the reaction chamber 3 is connected to a heat-conducting base 20, and a hot water transfer pipe 17 is provided at the lower part of the heat-conducting base 20. One end of the hot water transfer pipe 17 is connected to an inlet pipe 11, and the other end is connected to an outlet pipe 7. During use, the heat inside the reaction chamber 3 is transferred to the hot water transfer pipe 17 through the heat-conducting base 20, thereby heating the water in the hot water transfer pipe 17. Water is introduced into the hot water transfer pipe 17 through the inlet pipe 11, and the heated water is discharged through the outlet pipe 7. The water is then directed to the required section according to the heated temperature (for example, as a heating medium introduced into the heating jacket of the reaction chamber 3 or as a heating medium to preheat other materials in chlor-alkali production). During or after the electrolysis reaction, the heat generated by the electrolysis reaction in the reaction chamber 3 is utilized to achieve the purpose of energy saving and consumption reduction.

[0053] See Figure 4 In this embodiment, a receiving block 19 is provided on each of the two symmetrical side walls of the support chamber 6. The receiving block 19 is located below the hot water transfer pipe 17, and an anti-slip protrusion 18 is provided on the receiving block 19. The receiving block 19 is connected to the hot water transfer pipe 17 through the anti-slip protrusion 18. In use, the support chamber 6 supports the hot water transfer pipe 17 through the receiving block 19, thereby increasing the installation and operational stability of the hot water transfer pipe 17.

[0054] In this embodiment, an insulation layer is provided on the inner wall of the support chamber 6 to reduce heat loss at the lower end of the reaction chamber 3 and improve heat utilization.

[0055] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An energy-saving reactor for chlor-alkali electrolysis, characterized in that: The reaction chamber includes a reaction chamber (3) and a support chamber (6) fitted at the bottom of the reaction chamber (3). A rotating rod (1) is provided inside the reaction chamber (3) and is movably connected to the reaction chamber (3). A drive wheel (10) and a motor (9) are respectively provided inside the support chamber (6). The drive wheel (10) is connected to the bottom surface of the reaction chamber (3). A driven wheel (12) is engaged on the drive wheel (10), and the drive wheel (10) and the driven wheel (12) rotate in opposite directions. The motor (9) drives the drive wheel (10) to rotate the reaction chamber (3), and at the same time, the drive wheel (10) drives the driven wheel (12) to rotate the rotating rod (1) in the opposite direction.

2. The energy-saving reactor for chlor-alkali electrolysis according to claim 1, characterized in that: The top of the reaction chamber (3) is provided with an annular slide seat (15), and the upper end of the rotating rod (1) is provided with a slider (14); the slider (14) is inserted into the annular slide seat (15).

3. The energy-saving reactor for chlor-alkali electrolysis according to claim 2, characterized in that: Guide blocks (5) are provided on both sides of the lower end of the reaction chamber (3), and guide grooves (16) are provided on the upper end of the inner wall of the support chamber (6), and the guide blocks (5) and guide grooves (16) are slidably connected.

4. The energy-saving reactor for chlor-alkali electrolysis according to claim 3, characterized in that: Stirring blades (2) are fixed at equal intervals on both sides of the rotating rod (1).

5. The energy-saving reactor for chlor-alkali electrolysis according to claim 4, characterized in that: There are one or more rotating rods (1) and driven wheels (12). The driven wheels (12) are evenly distributed in a circle on the outer wall of the driving wheel (10). The rotating rods (1) are vertically distributed in the axial direction of the reaction chamber (3). The positions of the rotating rods (1) correspond to the positions of the driven wheels (12) and are connected one by one.

6. The energy-saving reactor for chlor-alkali electrolysis according to claim 5, characterized in that: The support chamber (6) is further provided with a protective chamber (8), and the motor (9) is placed inside the protective chamber (8).

7. The energy-saving reactor for chlor-alkali electrolysis according to any one of claims 1-6, characterized in that: The energy-saving reactor for chlor-alkali electrolysis also includes a hot water pipe (17) and a heat-conducting seat (20) located above the hot water pipe (17). The hot water pipe (17) is installed inside the support chamber (6), and both ends of the hot water pipe (17) are connected to the outside of the support chamber (6). The heat-conducting seat (20) is placed on the outer bottom surface of the reaction chamber body (3). The heat-conducting seat (20) is in contact with the pipe wall of the hot water pipe (17).

8. The energy-saving reactor for chlor-alkali electrolysis according to claim 7, characterized in that: There are multiple heat-conducting seats (20), and the multiple heat-conducting seats (20) are evenly distributed on the outer bottom surface of the reaction chamber (3); the multiple heat-conducting seats (20) are in contact with the pipe wall of the hot water pipe (17).

9. The energy-saving reactor for chlor-alkali electrolysis according to claim 8, characterized in that: The support chamber (6) is provided with receiving blocks (19) on both symmetrical side walls. The receiving blocks (19) are located below the hot water pipe (17). The receiving blocks (19) are provided with anti-slip protrusions (18). The receiving blocks (19) are connected to the hot water pipe (17) through the anti-slip protrusions (18).

10. The energy-saving reactor for chlor-alkali electrolysis according to claim 1, characterized in that: The reaction chamber (3) is provided with an exhaust pipe (22) and a feed pipe (13); the exhaust pipe (22) and the feed pipe (13) are both connected to the inside of the reaction chamber (3).

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