Electrodialysis unit for purification of succinic acid

Abstract

The utility model discloses a butanedioic acid purification is with electro dialysis device, include: electro dialysis assembly, the filter assembly is including fixedly arranged below the filter box of electro dialysis assembly, the fixed pipe of fixed plug in filter box and the spiral blade of fixed setting in fixed pipe surface, the fixed pipe top is provided with the opening of the communication of filter box, the inner wall and the outer wall of filter box cooperation forms the filter chamber, the spiral channel is formed to the spiral blade in filter chamber, the utility model discloses a fixed pipe surface spiral channel is constructed spiral blade, and the raw water is under the flow guiding effect of gravity and blade and goes down along spiral channel, prolongs the residence time of liquid in filter chamber, and the screening effect of cooperation of the drainage hole, realizes efficient solid -liquid separation, avoids its influence electro dialysis process and the positive and negative membrane.

Description

Technical Field

[0001] This utility model relates to the field of succinic acid production technology, and in particular to an electrodialysis device for succinic acid purification. Background Technology

[0002] Succinic acid is a colorless crystal with important applications in medicine and industry. An important step in the preparation of succinic acid is the purification of its solution, which requires the use of an electrodialysis device for efficient purification.

[0003] During the purification process, succinic acid solution often contains some solid impurities. These solid impurities not only affect the electrodialysis process of the electrode membrane, but also easily affect the service life of the electrode membrane. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] An electrodialysis apparatus for succinic acid purification includes:

[0006] Electrodialysis components;

[0007] The filtration assembly includes a filter box fixedly disposed below the electrodialysis assembly, a fixed tube fixedly inserted into the filter box, and a spiral blade fixedly disposed on the surface of the fixed tube. The top of the fixed tube has an opening communicating with the filter box. The inner and outer walls of the filter box cooperate to form a filtration chamber. The spiral blade forms a spiral channel in the filtration chamber. The spiral blade has a flow channel inside. The surface of the spiral blade has multiple sets of drainage holes communicating with the flow channel. A water storage tank communicating with the flow channel is fixedly sleeved on the surface of the filter box.

[0008] Raw water is fed into the filtration chamber through the opening of a fixed pipe. The filtrate enters the flow channel through the drainage holes on the spiral blades. Solid impurities are trapped in the spiral channel. The filtrate that enters the flow channel is temporarily stored in a water tank and then pumped into the electrodialysis unit for treatment.

[0009] As an improvement to the above technical solution, the electrodialysis assembly includes a housing, at least two sets of cation membranes, at least two sets of anion membranes, and an anode plate and a cathode plate respectively disposed on the two inner side walls of the housing, wherein at least two sets of cation membranes and at least two sets of anion membranes are alternately installed inside the housing.

[0010] As an improvement to the above technical solution, the anolyte and anion membrane divide the interior of the box into multiple chambers, including a freshwater chamber and a concentrated water chamber.

[0011] As an improvement to the above technical solution, a freshwater drain pipe is connected to the top of the freshwater chamber, and a concentrated water drain pipe is connected to the top of the concentrated water chamber.

[0012] As an improvement to the above technical solution, the filtration assembly further includes a liquid delivery component, which includes a pump body installed on the outer wall of the filter box. The input end of the pump body is connected to a water storage tank through a connecting pipe, and the output end of the pump body is connected to multiple sets of branch pipes, which are respectively connected to the bottom of multiple chambers.

[0013] The beneficial effects of this utility model are:

[0014] A spiral channel is constructed by fixing the spiral blades on the surface of the tube. Under the influence of gravity and the flow guidance of the blades, the raw water flows down along the spiral channel, which prolongs the residence time of the liquid in the filtration chamber. Combined with the sieving effect of the drain holes, efficient solid-liquid separation is achieved, avoiding its impact on the electrodialysis process and the anion and ion membranes.

[0015] Solid impurities trapped by the spiral blades gradually settle to the bottom of the filter box with the water flow, and the filter channel is connected to the bottom of the filter box to form a concentrated storage area for impurities, which facilitates regular cleaning of impurities. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the electrodialysis component of this utility model.

[0018] Reference numerals: 10. Electrodialysis assembly; 11. Box body; 12. Anode plate; 13. Cathode plate; 14. Anion membrane; 15. Anode membrane; 16. Freshwater drain pipe; 17. Concentrate drain pipe; 20. Filter box; 21. Spiral blade; 211. Flow channel; 22. Fixed pipe; 23. Water storage tank; 24. Connecting pipe; 25. Branch pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] An electrodialysis apparatus for succinic acid purification includes:

[0021] Electrodialysis module 10;

[0022] The filtration assembly includes a filter box 20 fixedly disposed below the electrodialysis assembly 10, a fixed tube 22 fixedly inserted into the filter box 20, and a spiral blade 21 fixedly disposed on the surface of the fixed tube 22. The top of the fixed tube 22 has an opening communicating with the filter box 20. The inner wall and outer wall of the filter box 20 cooperate to form a filtration cavity. The spiral blade 21 forms a spiral channel in the filtration cavity. The spiral blade 21 has a flow channel 211 inside. The surface of the spiral blade 21 has multiple sets of drainage holes communicating with the flow channel 211. A water storage tank 23 communicating with the flow channel 211 is fixedly sleeved on the surface of the filter box 20.

[0023] Raw water is fed into the filtration chamber through the opening of the fixed pipe 22. The filtrate enters the flow channel 211 through the drain hole on the spiral blade 21. Solid impurities are trapped in the spiral channel. The filtrate entering the flow channel 211 is temporarily stored in the water storage tank and then pumped into the electrodialysis unit for treatment.

[0024] Specifically, raw water containing succinic acid enters the filter box 20 through the top opening of the fixed pipe 22. The spiral blades 21 on the surface of the fixed pipe 22 construct a spiral channel in the filter chamber. Under the influence of gravity and the flow guidance of the spiral blades, the raw water flows downward along the spiral channel. During this process, solid impurities are blocked by the spiral blades and affected by centrifugal force, and are trapped in the spiral channel. They gradually move towards the bottom of the filter chamber with the water flow. The filtrate enters the flow channel 211 inside the spiral blades through the drain hole. The flow channel 211 gathers the dispersed filtrate and connects it to the water storage tank 23 fixedly sleeved on the surface of the filter box 20, so that the filtrate is temporarily stored in the water storage tank 23, completing the initial separation of solid and liquid. The liquid slowly flows down along the spiral channel, increasing the residence time, which is conducive to the sedimentation of impurities and the improvement of filtration efficiency. Larger solid impurities are trapped in the spiral channel and gradually deposited to the bottom of the filter box with the liquid flow. The filter channel is connected to the bottom of the filter box, so that the impurities can be cleaned regularly.

[0025] In one embodiment, the electrodialysis assembly 10 includes a housing 11, at least two sets of cation exchange membranes 15, at least two sets of anion exchange membranes 14, and an anode plate 12 and a cathode plate 13 respectively disposed on the two inner side walls of the housing 11. The at least two sets of cation exchange membranes 15 and at least two sets of anion exchange membranes 14 are alternately installed inside the housing 11. The cation exchange membranes 15 and anion exchange membranes 14 divide the interior of the housing 11 into multiple chambers, including a desalination chamber and a concentrate chamber. Under the action of the DC electric field of the anode plate 12 and the cathode plate 13, ions in the solution migrate in a directional manner. The cation exchange membrane isolates anions through cations, and the anion exchange membrane isolates cations through anions. As a result, some of these chambers form desalination chambers with few ions, while the chambers adjacent to the desalination chambers form concentrate chambers with many ions, thereby achieving ion separation and concentration.

[0026] In one embodiment, a freshwater drain pipe 16 is connected to the top of the freshwater chamber, and a concentrated water drain pipe 17 is connected to the top of the concentrated water chamber. The freshwater drain pipe 16 is used to discharge the solution in the freshwater chamber, and the concentrated water drain pipe 17 is used to discharge the solution in the concentrated water chamber.

[0027] In one embodiment, the filtration assembly further includes a liquid delivery component, which includes a pump body installed on the outer wall of the filter box 20. The input end of the pump body is connected to the water storage tank 23 through a connecting pipe 24, and the output end of the pump body is connected to multiple sets of branch pipes 25, which are respectively connected to the bottom of multiple chambers. When the water storage tank 23 stores sufficient filtrate, the pump body starts to draw the filtrate from the water storage tank 23, deliver it to the pump body through the connecting pipe 24, and then distribute it evenly to the bottom of each chamber of the electrodialysis assembly through multiple sets of branch pipes 25, providing a stable raw material input for the subsequent electrodialysis process.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. An electrodialysis apparatus for succinic acid purification, characterized in that, include: Electrodialysis module (10); The filter assembly includes a filter box (20) fixedly disposed below the electrodialysis assembly (10), a fixed tube (22) fixedly inserted into the filter box (20), and a spiral blade (21) fixedly disposed on the surface of the fixed tube (22). The top of the fixed tube (22) is provided with an opening communicating with the filter box (20). The inner wall and outer wall of the filter box (20) cooperate to form a filter cavity. The spiral blade (21) forms a spiral channel in the filter cavity. A flow channel (211) is provided inside the spiral blade (21). Multiple sets of drainage holes communicating with the flow channel (211) are provided on the surface of the spiral blade (21). A water storage tank (23) communicating with the flow channel (211) is fixedly sleeved on the surface of the filter box (20). In this process, raw water is fed into the filter chamber through the opening of the fixed pipe (22), and the filtrate enters the flow channel (211) through the drain hole on the spiral blade (21). Solid impurities are trapped in the spiral channel. The filtrate entering the flow channel (211) is temporarily stored in the water storage tank and then pumped into the electrodialysis unit for treatment.

2. The electrodialysis apparatus for succinic acid purification according to claim 1, characterized in that: The electrodialysis assembly (10) includes a housing (11), at least two sets of cation membranes (15), at least two sets of anion membranes (14), and an anode plate (12) and a cathode plate (13) respectively disposed on the two inner side walls of the housing (11). At least two sets of cation membranes (15) and at least two sets of anion membranes (14) are alternately installed inside the housing (11).

3. The electrodialysis apparatus for succinic acid purification according to claim 2, characterized in that: The positive membrane (15) and negative membrane (14) divide the interior of the box (11) into multiple chambers, including a fresh water chamber and a concentrated water chamber.

4. The electrodialysis apparatus for succinic acid purification according to claim 3, characterized in that: A freshwater drain pipe (16) is connected to the top of the freshwater chamber, and a concentrated water drain pipe (17) is connected to the top of the concentrated water chamber.

5. The electrodialysis apparatus for succinic acid purification according to claim 4, characterized in that: The filtration assembly also includes a liquid delivery component, which includes a pump body installed on the outer wall of the filter box (20). The input end of the pump body is connected to the water storage tank (23) through a connecting pipe (24). The output end of the pump body is connected to multiple sets of branch pipes (25), and the branch pipes (25) are respectively connected to the bottom of multiple chambers.

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