De-ion exchanger

Abstract

The de-ion exchanger comprises a support, a shell is vertically arranged on the support, an ED I module is arranged in the shell and comprises an electrode module, a fresh water chamber, a first concentrated water chamber and a second concentrated water chamber, and the first concentrated water chamber and the second concentrated water chamber are symmetrically arranged on the two sides of the fresh water chamber. The side, communicated with the first concentrated water chamber, of the fresh water chamber is fixedly provided with an anion exchange membrane for filtering a water body, the side, communicated with the second concentrated water chamber, of the fresh water chamber is fixedly provided with a cation exchange membrane for filtering the water body, and the fresh water chamber is filled with ion exchange fibers for enhancing ion migration; the cathode is arranged in the first concentrated water chamber, and the anode is arranged in the second concentrated water chamber. By vertically arranging the shell, the stability can be improved while the space is saved, and the ion exchange fibers filled in the fresh water chamber can effectively increase the specific surface area, so that the preparation efficiency of the ultrapure water is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ultrapure water preparation, particularly to a deionization exchanger. BACKGROUND

[0002] ED I electric desalting equipment, also known as continuous electric desalting technology. This equipment integrates electrodialysis technology and ion exchange technology. Through the ion membrane to select the ion in water, and then through the exchange resin to exchange the ion, so as to realize the directional migration of the ion in water under the action of the electric field, so as to achieve the deep purification of water and the continuous regeneration of the resin. The ED I water preparation process can continuously prepare ultrapure water without acid and alkali chemicals for regeneration, and can be widely used in the fields of electric power, electronics, medicine, chemical industry, food and laboratory.

[0003] However, although the common ion exchange resin filling on the market can enhance the conductivity between the membranes, it still has the problems of slow exchange speed and large membrane spacing. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a deionization exchanger to solve the problems of the prior art.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] The deionization exchanger comprises a support, an outer shell is vertically arranged on the support, an ED I module is arranged in the outer shell;

[0007] The ED I module comprises an electrode module, a fresh water chamber, a first concentrated water chamber and a second concentrated water chamber;

[0008] The first concentrated water chamber and the second concentrated water chamber are symmetrically arranged on the two sides of the fresh water chamber, an anion exchange membrane for filtering water is fixedly installed on one side of the fresh water chamber in communication with the first concentrated water chamber, and a cation exchange membrane for filtering water is fixedly installed on one side of the fresh water chamber in communication with the second concentrated water chamber;

[0009] The fresh water chamber is filled with ion exchange fibers for enhancing ion migration;

[0010] The electrode module comprises a cathode and an anode, the cathode is arranged in the first concentrated water chamber, and the anode is arranged in the second concentrated water chamber.

[0011] By adopting the technical scheme, under the influence of the cathode and the anode, the water to be purified in the fresh water chamber flows to the concentrated water chambers on both sides, anions enter the first concentrated water chamber through the anion exchange membrane, and cations enter the second concentrated water chamber through the cation exchange membrane, and the water in the fresh water chamber becomes more resistant as the anions and cations gradually decrease, at this time, the filtration speed of the anions and cations will slow down, in the prior art, ion exchange resin is filled, and the ion exchange fiber filled in the fresh water chamber can achieve better effect than the ion exchange resin, because the ion exchange fiber has higher specific surface area, greatly improving the ion exchange efficiency, meanwhile, the open structure of the fiber can help the ion to diffuse quickly, improving the ion exchange speed, and the good mechanical strength and flexibility of the ion exchange fiber can also make it more suitable for the application scene of the preparation of ultrapure water, which can significantly improve the exchange speed and reduce the distance between the membranes.

[0012] In a further embodiment, the shell is a cylindrical shell, an open top of the shell is provided with a top cover, a water inlet is arranged above the shell, a water outlet is arranged below the shell, and a concentrated water outlet is arranged on the shell.

[0013] By adopting the technical scheme, the vertically arranged cylindrical shell can make the gas discharge more efficient, in the process of continuous electric desalination, a small amount of gas (such as hydrogen and oxygen) will be produced by electrode reaction, the vertical arrangement can help the gas to rise naturally and be discharged, avoiding the accumulation of gas affecting normal operation, at the same time, the gravity can be used to assist the flow of the internal water body, and the water flow is as evenly distributed as possible, improving the overall operation efficiency of the system while reducing energy loss, and the vertical arrangement can also save space, which is suitable for places with limited space, such as laboratories and small factories, etc., and the uniform water flow distribution and efficient ion migration can in turn further improve the quality of the prepared pure water to meet the demand for higher purity.

[0014] In a further embodiment, a water inlet pipe is arranged on the water inlet, a water outlet pipe is arranged on the water outlet, and a concentrated water pipe is arranged on the concentrated water outlet.

[0015] By adopting the technical scheme, the water inlet pipe transports the RO water to the inside of the EDI module, the pure water pipe transports the filtered pure water to the subsequent use place, if there is a higher water quality requirement, the water can also be transported to the subsequent water treatment place, and the concentrated water pipe is responsible for discharging the concentrated water.

[0016] In a further embodiment, a safety valve is arranged on each of the water inlet pipe, the water outlet pipe and the concentrated water pipe.

[0017] By adopting the technical scheme, the safety valve can perform overpressure protection, and when the system pressure exceeds the set safety value, the safety valve is automatically started to release the excessive pressure, so as to prevent the equipment from being damaged, for example, when the water inlet pressure is too high or the water production pipeline is blocked, the safety valve can protect the corresponding pipeline system, and in some sudden power failure or misoperation working conditions, the safety valve can relieve the water hammer effect, avoid the impact on the equipment and pipeline caused by sudden stop, and in general, the safety valve can effectively improve the stability of system operation and avoid accidents.

[0018] In further embodiments, two sides of the shell are fixedly installed with ear seats, and the ear seats are fixedly connected with the support.

[0019] By adopting the technical scheme, the support and the ear seat can ensure the safety and stability of the entire ion exchanger, and the firm support and fixing mode can make the equipment more stably and effectively operate.

[0020] In further embodiments, the shell is a shell made of carbon steel, and an inner rubber layer is fixedly installed in the shell.

[0021] By adopting the technical scheme, the carbon steel has high mechanical strength and is suitable for large-size mechanical equipment, the carbon steel can withstand high temperature, the rubber lining can maintain good performance within a certain temperature range, and the rubber lining can effectively isolate corrosive media and protect the carbon steel matrix, and is suitable for corrosive environments such as acid and alkali, and other complex working conditions.

[0022] In summary, the utility model has the following beneficial effects:

[0023] 1. By arranging the ion exchange fiber, the ion exchange fiber can be filled in the fresh water chamber, and better effect than the ion exchange resin can be achieved, because the ion exchange fiber has higher specific surface area, and the ion exchange efficiency is greatly improved, at the same time, the open structure of the fiber can help the ion to diffuse quickly, and the exchange speed of the ion is improved, and the good mechanical strength and flexibility of the ion exchange fiber can also make it more suitable for the application scene of ultrapure water preparation, and can significantly improve the exchange speed and reduce the diaphragm spacing.

[0024] 2. The vertical cylindrical shell and support structure allow for more efficient gas discharge. During continuous electro-desalination, the electrode reaction produces small amounts of gas (such as hydrogen and oxygen). The vertical design helps these gases rise and dissipate naturally, preventing gas accumulation from affecting normal operation. Gravity can also be used to assist the flow of internal water and ensure that the water flow is as even as possible, improving the overall system efficiency while reducing energy loss. The vertical design also saves space, making it suitable for places with limited space, such as laboratories and small factories. The uniform water flow distribution and efficient ion migration can, in turn, further improve the quality of the prepared pure water, meeting the requirements for higher purity.

[0025] 3. The safety valve provides overpressure protection. When the system pressure exceeds the set safety value, the safety valve will automatically activate to release the excess pressure and prevent equipment damage. For example, when the inlet water pressure is too high or the product water pipeline is blocked, the safety valve can protect the corresponding pipeline system. At the same time, in the event of a sudden power outage or misoperation, the safety valve can mitigate the water hammer effect and avoid the impact on equipment and pipelines caused by a sudden shutdown. Overall, it improves the stability of system operation and prevents accidents. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0027] In the diagram, 1 is the support frame; 2 is the outer casing; 3 is the EDI module; 31 is the electrode module; 32 is the desalination chamber; 33 is the first concentrate chamber; 34 is the second concentrate chamber; 4 is the anion exchange membrane; 5 is the cation exchange membrane; and 6 is the ion exchange fiber. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0030] likeFigure 1 As shown, the deionization exchanger comprises a bracket 1, an outer shell 2 is vertically arranged on the bracket 1, and an EDI module 3 is arranged in the outer shell 2;

[0031] The EDI module 3 comprises an electrode module 31, a fresh water chamber 32, a first concentrated water chamber 33, and a second concentrated water chamber 34;

[0032] The first concentrated water chamber 33 and the second concentrated water chamber 34 are symmetrically arranged on two sides of the fresh water chamber 32, an anion exchange membrane 4 for filtering water is fixedly installed on one side of the fresh water chamber 32 which communicates with the first concentrated water chamber 33, and a cation exchange membrane 5 for filtering water is fixedly installed on one side of the fresh water chamber 32 which communicates with the second concentrated water chamber 34;

[0033] The fresh water chamber 32 is filled with ion exchange fibers 6 for enhancing ion migration;

[0034] The electrode module 31 comprises a cathode and an anode, the cathode is arranged in the first concentrated water chamber 33, and the anode is arranged in the second concentrated water chamber 34.

[0035] In this embodiment, under the influence of the cathode and the anode, the water to be purified in the fresh water chamber 32 flows to the concentrated water chambers on both sides, anions pass through the anion exchange membrane 4 into the first concentrated water chamber 33, and cations pass through the cation exchange membrane 5 into the second concentrated water chamber 34, and the water in the fresh water chamber 32 becomes more resistant as the anions and cations gradually decrease, at this time, the filtration speed of the anions and cations becomes slow, in the prior art, ion exchange resin is filled, but the ion exchange fibers 6 filled in the fresh water chamber 32 can achieve better effect than the ion exchange resin, because the ion exchange fibers 6 have higher specific surface area, greatly improving the ion exchange efficiency, at the same time, the open structure of the fibers can help the ions to quickly diffuse, improving the exchange speed of the ions, and the good mechanical strength and flexibility of the ion exchange fibers 6 can also make them more suitable for the application scenario of ultrapure water preparation, which can significantly improve the exchange speed and reduce the distance between the membranes.

[0036] Further, the outer shell 2 is a cylindrical shell, an open top of the shell is provided with a top cover which is bolted and fixed, a water inlet is arranged above the outer shell 2, a water outlet is arranged below the outer shell 2, and a concentrated water outlet is arranged on the outer shell 2.

[0037] In the embodiment, the vertically arranged cylindrical shell can make the discharge of gas more efficient. In the process of continuous electrodeionization, a small amount of gas (such as hydrogen and oxygen) is generated by electrode reaction. The vertical arrangement can help the gas to rise naturally and be discharged, avoiding the accumulation of gas affecting normal operation. At the same time, the gravity can be used to assist the flow of the internal water body, and the water flow is distributed as evenly as possible, improving the overall operation efficiency of the system while reducing energy loss. The vertical arrangement can also save space, which is suitable for places with limited space, such as laboratories and small factories. The uniform water flow distribution and efficient ion migration can further improve the quality of the prepared pure water, meeting the demand for higher purity.

[0038] Further, the water inlet is provided with a water inlet pipe, the water outlet is provided with a water outlet pipe, and the concentrated water outlet is provided with a concentrated water outlet pipe.

[0039] In the embodiment, the water inlet pipe transports the RO water to the inside of the EDI module 3, the pure water pipe transports the filtered pure water to the subsequent use location, and the concentrated water pipe is responsible for discharging the concentrated water.

[0040] Further, the water inlet pipe, the water outlet pipe and the concentrated water outlet pipe are all provided with safety valves.

[0041] In the embodiment, the safety valve can perform overpressure protection. When the system pressure exceeds the set safety value, the safety valve will automatically start to release the excess pressure, preventing the equipment from being damaged. For example, when the water inlet pressure is too high or the water outlet pipe is blocked, the safety valve can protect the corresponding pipe system. At the same time, in some sudden power failure or misoperation working conditions, the safety valve can relieve the water hammer effect, avoiding the impact on the equipment and pipe caused by sudden shutdown. In general, the safety valve can effectively improve the stability of the system operation and avoid accidents.

[0042] Further, the shell 2 is fixedly installed with ear seats on both sides, and the ear seats are all fixedly connected with the support 1.

[0043] In the embodiment, the support 1 and the ear seat can ensure the safety and stability of the entire ion exchanger. The fixed support 1 and the fixed mode can make the equipment operate more stably and effectively.

[0044] Further, the shell 2 is made of carbon steel, and the shell 2 is fixedly installed with an inner rubber layer inside.

[0045] In the embodiment, the carbon steel has high mechanical strength, is suitable for large-size mechanical equipment, can resist high temperature, the rubber lining can maintain good performance in a certain temperature range, and the rubber lining can effectively isolate corrosive medium to protect the carbon steel base, and is suitable for corrosive environments such as acid and alkali and other relatively complex working conditions.

[0046] In the embodiments disclosed in the utility model, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connection" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the utility model can be understood according to specific circumstances.

[0047] The specific embodiments are merely an explanation of the utility model, and are not a limitation of the utility model, and those skilled in the art can make modifications to the embodiments without creative contribution according to needs after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.

Claims

1. A deion exchanger, comprising a support (1), characterized in that: A housing (2) is vertically mounted on the bracket (1), and an EDI module (3) is installed inside the housing (2). The EDI module (3) includes an electrode module (31), a freshwater chamber (32), a first concentrate chamber (33), and a second concentrate chamber (34); The first concentrate chamber (33) and the second concentrate chamber (34) are symmetrically arranged on both sides of the desalination chamber (32). An anion exchange membrane (4) for filtering water is fixedly installed on the side of the desalination chamber (32) that is connected to the first concentrate chamber (33), and a cation exchange membrane (5) for filtering water is fixedly installed on the side of the desalination chamber (32) that is connected to the second concentrate chamber (34). The freshwater chamber (32) is filled with ion exchange fibers (6) that enhance ion migration; The electrode module (31) includes a cathode and an anode, the cathode being disposed in a first concentrate chamber (33) and the anode being disposed in a second concentrate chamber (34).

2. The deion exchanger according to claim 1, characterized in that: The outer shell (2) is a cylindrical shell with an opening at the top and a top cover bolted to the opening. A water inlet is provided at the top of the outer shell (2), a water outlet is provided at the bottom of the outer shell (2), and a concentrate outlet is provided on the outer shell (2).

3. The deion exchanger according to claim 2, characterized in that: The inlet is equipped with an inlet pipe, the outlet is equipped with a product pipe, and the concentrate outlet is equipped with a concentrate pipe.

4. The deion exchanger according to claim 3, characterized in that: Safety valves are installed on the inlet pipe, product water pipe, and concentrate pipe.

5. The deion exchanger according to claim 1, characterized in that: Ear seats are fixedly installed on both sides of the outer shell (2), and multiple ear seats are bolted to the bracket (1).

6. The deion exchanger according to claim 5, characterized in that: The outer shell (2) is made of carbon steel, and an inner rubber lining is fixedly installed inside the outer shell (2).

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