Device for increasing chlorate decomposition amount in ion membrane caustic soda production

Abstract

The utility model discloses a device that improves chlorate decomposition quantity in ion exchange membrane caustic soda production, including stirring drum, the outer surface of stirring drum is installed with a set of support leg, and the bottom of each support leg is fixedly connected with support seat, the outer surface of stirring drum is installed with decomposition device, and the decomposition device includes first cross board, and the first cross board installs in the outer surface of stirring drum, and the upper surface of first cross board is installed with dissolving box, and the outer surface of dissolving box is installed with pH value detector. The device that improves chlorate decomposition quantity in ion exchange membrane caustic soda production, through the cooperation setting of decomposition device and stirring drum, through the collaborative work of metering pump and injection mixer, can real -time, accurate regulation chlorate decomposition tank export brine pH value, make it satisfy the requirement of dechlorination system, breaked through because of the pH value limit leads to the problem of chlorate decomposition quantity limited.

Description

Technical Field

[0001] This utility model relates to the field of ion-exchange membrane caustic soda production equipment, specifically a device for increasing the decomposition rate of chlorate in ion-exchange membrane caustic soda production. Background Technology

[0002] In the ion-exchange membrane process for caustic soda production, chlorate decomposition is a crucial step. Currently, the pH of the brine produced after chlorate decomposition in the desalination tank needs to be adjusted before being fed into the brine dechlorination system; however, existing equipment faces several challenges. Because the acidic brine at the outlet of the chlorate decomposition tank is quite high, the decomposition capacity is limited by the pH control parameter (1-2) of the dechlorination system. In the early stages of ion-exchange membrane operation, when there are few side reactions in the electrolyzer, production requirements can still be met.

[0003] However, after about two years of operation, the ion-exchange membrane develops numerous pinholes and pinholes due to aging, deterioration, and mechanical damage. This increases side reactions in the anode chamber of the electrolyzer, leading to a dramatic increase in chlorate production. At this point, the decomposition capacity of the chlorate decomposition tank can no longer meet production requirements. Furthermore, because the brine system is a circulating system, chlorate gradually accumulates within it, causing a decrease in the sodium chloride content of the refined brine. Simultaneously, increased leakage from the ion-exchange membrane allows brine to enter the cathode chamber, resulting in an increase in chlorate content in the alkali. Ultimately, this causes severe corrosion to the subsequent caustic soda evaporation equipment, significantly increasing equipment maintenance costs and severely impacting the economic efficiency of the chlor-alkali system. Therefore, we provide a device for increasing the chlorate decomposition capacity in caustic soda production using the ion-exchange membrane method. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a device for increasing the decomposition of chlorate in caustic soda production using the ion-exchange membrane method, thus solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for increasing the decomposition of chlorate in caustic soda production using the ion-exchange membrane method, comprising a stirring drum, a set of support legs installed on the outer surface of the stirring drum, a support base fixedly connected to the bottom end of each support leg, a decomposition device installed on the outer surface of the stirring drum, the decomposition device comprising a first horizontal plate installed on the outer surface of the stirring drum, a dissolving tank installed on the upper surface of the first horizontal plate, and a pH meter installed on the outer surface of the dissolving tank.

[0008] Preferably, the decomposition device further includes a second horizontal plate, which is installed on the outer surface of the stirring drum. An alkali storage tank is installed on the upper surface of the second horizontal plate, and a metering pump is installed on the upper surface of the alkali storage tank.

[0009] Preferably, the input end of the metering pump is connected to an input pipe, and the other end of the input pipe is connected to the upper surface of the alkali storage tank, and the output end of the metering pump is connected to an output pipe.

[0010] Preferably, the decomposition device further includes a jet mixer, which is installed on the upper surface of the stirring tank. The input end of the jet mixer is connected to the other end of the output pipe, and the output end of the jet mixer is connected to a jet pipe, the other end of which extends to the top of the dissolving tank.

[0011] Preferably, the decomposition device further includes a third horizontal plate, which is installed on the outer surface of the stirring drum. A pump is installed on the upper surface of the third horizontal plate. The input end of the pump is connected to a flexible hose, and the other end of the flexible hose is connected to the outer surface of the dissolving tank. The output end of the pump is connected to a plastic tube, and the other end of the plastic tube is connected to the upper surface of the stirring drum.

[0012] Preferably, the decomposition device further includes a motor, which is mounted on the outer surface of the stirring drum. The output end of the motor is connected to a stirring rod, and the end of the stirring rod away from the motor is rotatably connected to the inner bottom wall of the stirring drum.

[0013] (III) Beneficial Effects

[0014] This invention provides a device for increasing the decomposition rate of chlorate in caustic soda production using the ion-exchange membrane method. It has the following beneficial effects:

[0015] This device for increasing chlorate decomposition in ion-exchange membrane caustic soda production, through the coordinated setup of the decomposition unit and the stirring tank, and the collaborative work of the metering pump and the jet mixer, can adjust the pH value of the brine at the outlet of the chlorate decomposition tank in real time and accurately, so as to meet the requirements of the dechlorination system, thus overcoming the problem of limited chlorate decomposition caused by pH value limitation.

[0016] This device for increasing chlorate decomposition in caustic soda production using the ion-exchange membrane method, through the coordinated setup of the decomposition unit and the stirring tank, effectively adjusts the pH value to create better conditions for chlorate decomposition. Combined with the thorough mixing and reaction in the mixing reaction unit, it can significantly increase the decomposition capacity of the chlorate decomposition tank, meet the treatment needs of the large amount of chlorate generated after the aging of the ion-exchange membrane, and reduce the accumulation of chlorate in the brine system. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the pH value detector of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the motor of this utility model;

[0020] Figure 4 This is a schematic diagram illustrating the working principle of this utility model.

[0021] In the diagram: 1. Stirring drum; 2. Support leg; 3. Support base; 4. Decomposition device; 401. First horizontal plate; 402. Dissolving tank; 403. pH meter; 404. Second horizontal plate; 405. Alkali storage tank; 406. Metering pump; 407. Input pipe; 408. Output pipe; 409. Jet mixer; 410. Jet pipe; 411. Third horizontal plate; 412. Pump; 413. Hose; 414. Plastic pipe; 415. Motor; 416. Stirring rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this utility model provides a technical solution: a device for increasing the decomposition of chlorate in caustic soda production using the ion-exchange membrane method, comprising a stirring drum 1, a set of support legs 2 installed on the outer surface of the stirring drum 1, and a support base 3 fixedly connected to the bottom end of each support leg 2. The support legs 2 can support the stirring drum 1, thereby making the stirring drum 1 more stable during subsequent use.

[0024] A decomposition device 4 is installed on the outer surface of the stirring drum 1. The decomposition device 4 includes a first horizontal plate 401, which is installed on the outer surface of the stirring drum 1. A dissolving tank 402 is installed on the upper surface of the first horizontal plate 401. The dissolving tank 402 can store the brine, which facilitates the subsequent processing of the brine.

[0025] A pH meter 403 is installed on the outer surface of the dissolving tank 402. The pH meter 403 can detect the pH value of the brine, thereby ensuring the normal use of the brine.

[0026] The decomposition device 4 also includes a second horizontal plate 404, which is installed on the outer surface of the stirring drum 1. An alkali storage tank 405 is installed on the upper surface of the second horizontal plate 404. The alkali storage tank 405 can store alkali, thus facilitating subsequent use.

[0027] A metering pump 406 is installed on the upper surface of the alkali storage tank 405. The input end of the metering pump 406 is connected to an input pipe 407, and the other end of the input pipe 407 is connected to the upper surface of the alkali storage tank 405. The metering pump 406 can measure the output liquid, which facilitates subsequent operation by staff.

[0028] The output end of the metering pump 406 is connected to an output pipe 408, which enables the discharge of liquid.

[0029] The decomposition device 4 also includes a jet mixer 409, which is installed on the upper surface of the stirring tank 1. The input end of the jet mixer 409 is connected to the other end of the output pipe 408, and the output end of the jet mixer 409 is connected to a jet pipe 410. The other end of the jet pipe 410 extends to the top of the dissolving tank 402. The jet mixer 409 can fully mix the alkaline solution with the brine in a high-speed jet manner, thereby achieving rapid adjustment of the pH value.

[0030] The decomposition device 4 also includes a third horizontal plate 411, which is installed on the outer surface of the stirring tank 1. A pump 412 is installed on the upper surface of the third horizontal plate 411. The input end of the pump 412 is connected to a flexible hose 413, and the other end of the flexible hose 413 is connected to the outer surface of the dissolving tank 402. The output end of the pump 412 is connected to a plastic tube 414, and the other end of the plastic tube 414 is connected to the upper surface of the stirring tank 1. Finally, by working, the mixed brine inside the dissolving tank 402 can be extracted for subsequent processing.

[0031] The decomposition device 4 also includes a motor 415, which is installed on the outer surface of the stirring drum 1. The output end of the motor 415 is connected to a stirring rod 416, and the end of the stirring rod 416 away from the motor 415 is rotatably connected to the inner bottom wall of the stirring drum 1, thereby realizing the stirring of the brine and making it convenient for subsequent use by staff.

[0032] In use, the dilute salt water is first dissolved in the dissolving tank 402, and then the pH value is measured by the pH meter 403. Based on the value measured by the pH meter 403, the metering pump 406 is started. The metering pump 406 will draw a certain amount of alkali solution from the alkali storage tank 405 according to the value, which will facilitate the subsequent fusion of alkali solution and dilute salt water. The alkali solution will be transported to the jet mixer 409. Through the jet mixer 409, the alkali solution will be sprayed out in a high-speed jet manner to achieve the fusion of dilute salt water and alkali solution, thereby achieving pH adjustment. Finally, the pump 412 will pump the mixed dilute salt water into the stirring drum 1. The motor 415 will rotate the stirring rod 416 to achieve the stirring of the mixed dilute salt water and accelerate the pH adjustment of the dilute salt water. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane process, comprising a stirring drum (1), characterized in that: A set of support legs (2) are installed on the outer surface of the stirring drum (1). Each support leg (2) is fixedly connected to a support base (3) at its bottom end. A decomposition device (4) is installed on the outer surface of the stirring drum (1). The decomposition device (4) includes a first horizontal plate (401). The first horizontal plate (401) is installed on the outer surface of the stirring drum (1). A dissolving tank (402) is installed on the upper surface of the first horizontal plate (401). A pH value detector (403) is installed on the outer surface of the dissolving tank (402).

2. The device for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane process according to claim 1, characterized in that: The decomposition device (4) further includes a second horizontal plate (404), which is installed on the outer surface of the stirring cylinder (1). An alkaline storage tank (405) is installed on the upper surface of the second horizontal plate (404), and a metering pump (406) is installed on the upper surface of the alkaline storage tank (405).

3. The device for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane process according to claim 2, characterized in that: The input end of the metering pump (406) is connected to an input pipe (407), and the other end of the input pipe (407) is connected to the upper surface of the alkali storage tank (405). The output end of the metering pump (406) is connected to an output pipe (408).

4. The device for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane process according to claim 2, characterized in that: The decomposition device (4) further includes a jet mixer (409), which is installed on the upper surface of the stirring tank (1). The input end of the jet mixer (409) is connected to the other end of the output pipe (408), and the output end of the jet mixer (409) is connected to a jet pipe (410), with the other end of the jet pipe (410) extending above the dissolving tank (402).

5. The device for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane process according to claim 4, characterized in that: The decomposition device (4) also includes a third horizontal plate (411), which is installed on the outer surface of the stirring tank (1). A pump (412) is installed on the upper surface of the third horizontal plate (411). The input end of the pump (412) is connected to a hose (413), and the other end of the hose (413) is connected to the outer surface of the dissolving tank (402). The output end of the pump (412) is connected to a plastic tube (414), and the other end of the plastic tube (414) is connected to the upper surface of the stirring tank (1).

6. The apparatus for increasing the chlorate decomposition rate in caustic soda production using an ion-exchange membrane method according to claim 4, characterized in that: The decomposition device (4) also includes a motor (415), which is installed on the outer surface of the stirring drum (1). The output end of the motor (415) is connected to a stirring rod (416), and the end of the stirring rod (416) away from the motor (415) is rotatably connected to the inner bottom wall of the stirring drum (1).

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