Device for preparing sodium hypochlorite from chlorine generated by lithium chloride electrolysis

Abstract

The utility model relates to the field of chemical equipment, and discloses a device for preparing sodium hypochlorite from chlorine generated by lithium chloride electrolysis, the device comprises a reaction kettle, and a shell-and-tube heat exchanger is arranged in the reaction kettle; the stirrer in the inner barrel is driven to rotate under the magnetic action of the magnetic stirrer, chlorine and alkali liquor are fully mixed through rotation of the stirrer, meanwhile, the leakage risk possibly caused by a traditional stirring shaft is avoided through use of the magnetic stirrer, and the stirrer is made of a corrosion-resistant material so that long-term stable operation can be ensured; a shell-and-tube heat exchanger is arranged in the reaction kettle, the heat exchanger is connected with a refrigerating system and used for refrigerating the reaction process, the reaction temperature can be accurately controlled by controlling operation of the refrigerating system, the bottom end of a chlorine gas insertion pipe extends to the inner bottom of an inner barrel, the chlorine gas insertion pipe is connected with a lithium chloride electrolysis device, and the lithium chloride electrolysis device can be used for electrolyzing lithium chloride. Chlorine generated by electrolysis is introduced into the reaction kettle, and alkali liquor is added through the liquid alkali adding pipe.

Description

Technical Field

[0001] This application relates to the field of chemical equipment, and in particular to an apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis. Background Technology

[0002] Sodium hypochlorite, as a highly efficient disinfectant and water treatment agent, has a wide range of applications in many fields. The traditional sodium hypochlorite preparation process usually relies on the reaction of chlorine and sodium hydroxide, and chlorine often comes from industrial chlor-alkali production. In recent years, with the development of environmental protection and new energy technologies, people have begun to explore the direct preparation of sodium hypochlorite using electrolysis. Among them, chlorine generated by lithium chloride electrolysis has received increasing attention as a potential chlorine source.

[0003] Sodium hypochlorite is an important disinfectant in chemical production processes. Its preparation process requires strict control of reaction conditions and equipment structure to ensure product quality and safety. Traditional preparation devices often suffer from problems such as uneven mixing, low reaction efficiency, and high leakage risk during the reaction of chlorine and alkali. Utility Model Content

[0004] To address the problems of uneven mixing, low reaction efficiency, and high leakage risk in the reaction process of chlorine and alkaline solution in traditional preparation devices, this application provides a device for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis.

[0005] The apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis provided in this application adopts the following technical solution:

[0006] An apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis includes a reaction vessel, the interior of which is equipped with a shell-and-tube heat exchanger, the interior of which is equipped with an inner tank, and the bottom of the inner tank is equipped with a magnetic stirrer.

[0007] Preferably, both ends of the top surface of the reactor are provided with chlorine gas insertion pipes and liquid alkali addition pipes, the bottom ends of which extend into the interior of the inner tank, and the bottom end of the chlorine gas insertion pipe extends into the bottom of the inner tank.

[0008] Preferably, the outer wall of the reactor is provided with four legs, which are distributed equidistantly in a circular pattern.

[0009] Preferably, the bottom of the reactor has a discharge pipe, and an external pump is provided on the discharge pipe. The input end of the external pump is connected to the inner tank.

[0010] Preferably, the reactor is made of stainless steel, which has the characteristics of corrosion resistance and high temperature resistance.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] 1. The magnetic stirrer drives the stir bar inside the inner tank to rotate, which ensures thorough mixing of chlorine gas and alkaline solution. At the same time, the use of magnetic stirrer avoids the leakage risk that may be caused by traditional stirring shafts. The stir bar is made of corrosion-resistant material to ensure long-term stable operation. The shell-and-tube heat exchanger inside the reactor is connected to the refrigeration system to cool the reaction process. By controlling the operation of the refrigeration system, the reaction temperature can be precisely controlled.

[0013] 2. Both ends of the top surface of the reactor are equipped with chlorine gas insertion pipes and liquid alkali addition pipes. The bottom ends of both pipes extend into the inner tank, with the bottom of the chlorine gas insertion pipe extending to the bottom of the inner tank. The chlorine gas insertion pipe is connected to the lithium chloride electrolysis device to introduce the chlorine gas generated by electrolysis into the reactor. The liquid alkali addition pipe is used to add alkali solution. An external pump is installed on the bottom surface of the reactor. The input end of the external pump is connected to the inner tank, and the external pump is connected to the sodium hypochlorite solution output pipe to output the sodium hypochlorite solution generated by the reaction to the storage tank or other processing equipment. Attached Figure Description

[0014] Figure 1 This is a structural front view of an embodiment of the application;

[0015] Figure 2 This is a top view of the structure of the embodiment of the application;

[0016] Figure 3 This is a structural cross-sectional view of an embodiment of the application.

[0017] Explanation of reference numerals in the attached diagram: 1. Reactor; 2. Chlorine gas insertion pipe; 3. Liquid alkali addition pipe; 4. Support leg; 5. External pump; 6. Inner tank; 7. Magnetic stirrer; 8. Shell-and-tube heat exchanger. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0019] This application discloses an apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis, referring to... Figures 1-3The reaction vessel includes a reactor 1, which is made of stainless steel and has the characteristics of corrosion resistance and high temperature resistance. The bottom of the reactor 1 is welded and sealed to ensure no leakage. Inside the reactor 1, there is a shell-and-tube heat exchanger 8, and inside the shell-and-tube heat exchanger 8, there is an inner tank 6. At the bottom of the inner tank 6, there is a magnetic stirrer 7. The magnetic force of the magnetic stirrer 7 drives the stir bar inside the inner tank 6 to rotate. The rotation of the stir bar achieves thorough mixing of chlorine gas and alkaline solution. At the same time, the use of magnetic stirrer 7 avoids the leakage risk that may be caused by traditional stirring shafts. Moreover, the stir bar is made of corrosion-resistant material to ensure long-term stable operation. The shell-and-tube heat exchanger 8 inside the reactor 1 is connected to a refrigeration system for cooling the reaction process. By controlling the operation of the refrigeration system, the reaction temperature can be precisely controlled.

[0020] Reference Figure 1 Both ends of the top surface of the reactor 1 are provided with chlorine gas insertion pipe 2 and liquid alkali addition pipe 3. The bottom ends of chlorine gas insertion pipe 2 and liquid alkali addition pipe 3 extend into the interior of the inner tank 6, and the bottom end of chlorine gas insertion pipe 2 extends into the bottom of the inner tank 6. Chlorine gas insertion pipe 2 is connected to lithium chloride electrolysis device to introduce chlorine gas generated by electrolysis into the reactor 1, and is used to add alkali solution through liquid alkali addition pipe 3.

[0021] The outer wall of the reactor 1 is fixedly provided with four support legs 4, which are distributed equidistantly in a circular shape. The support legs 4 are used to support the device.

[0022] The bottom of the reactor 1 has a discharge pipe with an external pump 5. The input end of the external pump 5 is connected to the inner tank 6. The external pump 5 is connected to the sodium hypochlorite solution output pipe and is used to output the sodium hypochlorite solution generated by the reaction to the storage tank or other processing equipment.

[0023] The implementation principle of the apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis in this application embodiment is as follows: In use, firstly, chlorine gas insertion pipe 2 is connected to the lithium chloride electrolysis device, and the chlorine gas generated by electrolysis is introduced into the reaction vessel 1. Alkali solution is added through liquid alkali addition pipe 3. Then, the magnetic force of magnetic stirrer 7 drives the stir bar in inner tank 6 to rotate. The rotation of the stir bar achieves full mixing of chlorine gas and alkali solution. During the reaction process of materials in inner tank 6, the shell-and-tube heat exchanger 8 inside the reaction vessel 1 is connected to the refrigeration system to cool the reaction process. By controlling the operation of the refrigeration system, the reaction temperature can be precisely controlled. Finally, external pump 5 is connected to the sodium hypochlorite solution output pipeline to output the sodium hypochlorite solution generated by the reaction to the storage tank or other processing equipment.

[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0025] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis, comprising a reaction vessel (1), characterized in that: The reactor (1) is equipped with a shell-and-tube heat exchanger (8), and the shell-and-tube heat exchanger (8) is equipped with an inner tank (6). The bottom of the inner tank (6) is equipped with a magnetic stirrer (7).

2. The apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis according to claim 1, characterized in that: The top surface of the reactor (1) is provided with a chlorine gas insertion pipe (2) and a liquid alkali addition pipe (3) at both ends. The bottom ends of the chlorine gas insertion pipe (2) and the liquid alkali addition pipe (3) extend into the interior of the inner barrel (6), and the bottom end of the chlorine gas insertion pipe (2) extends into the bottom of the inner barrel (6).

3. The apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis according to claim 1, characterized in that: The outer wall of the reactor (1) is provided with four legs (4), which are distributed equidistantly in a circular shape.

4. The apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis according to claim 1, characterized in that: The bottom surface of the reactor (1) has a discharge pipe, and an external pump (5) is provided on the discharge pipe. The input end of the external pump (5) is connected to the inner barrel (6).

5. The apparatus for preparing sodium hypochlorite from chlorine gas generated by lithium chloride electrolysis according to claim 1, characterized in that: The reactor (1) is made of stainless steel and has the characteristics of corrosion resistance and high temperature resistance.

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