CN212076520U - Capacitor deionization device - Google Patents
Capacitor deionization device Download PDFInfo
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- CN212076520U CN212076520U CN201922453626.9U CN201922453626U CN212076520U CN 212076520 U CN212076520 U CN 212076520U CN 201922453626 U CN201922453626 U CN 201922453626U CN 212076520 U CN212076520 U CN 212076520U
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Abstract
The utility model discloses a capacitance deionization device, including casing, current collector, positive electrode, negative electrode and diaphragm, positive electrode, negative electrode all adopt polymer conducting material to make, positive electrode, negative electrode are in alternate parallel arrangement in the casing, be provided with the diaphragm between positive electrode, negative electrode, positive electrode, negative electrode are connected with the current collector respectively, be equipped with water inlet and delivery port on the casing. The electrode of the utility model is made of polymer conductive material, which is corrosion resistant, acid and alkali resistant, not easy to be oxidized or washed and lost, and prolongs the maintenance period; the electrodes, the current collectors, the diaphragms and the shell are convenient to install, and convenience is provided for maintenance of related personnel; the electrode has larger specific surface area and abundant pore structures, is beneficial to increasing the desalting efficiency, and the used high-molecular conductive material electrode material has fewer surface functional groups and reduces the generation of chemical adsorption, thereby reducing the attenuation of the recycling desalting efficiency and improving the removal rate.
Description
Technical Field
The utility model belongs to the technical field of the electric capacity deionization, in particular to electric capacity deionization device.
Background
With the expansion of population and the rapid development of industrialization, China faces a situation of serious shortage of fresh water resources. The most serious water shortage is in the east coastal areas, the west brackish water areas and inland large and medium-sized cities. The situation of shortage of fresh water resources is expected to be more severe when the population of China reaches the peak in 2030. Therefore, it is urgent to research and develop practical technologies for using non-traditional water resources (seawater, brackish water, reclaimed water). Common methods for desalting are: chemical desalting-ion exchange; thermal desalination-distillation method; electric desalting-electrodialysis; pressure desalination-reverse osmosis, nanofiltration, etc. However, these methods all have many limitations, such as large energy consumption, high cost, secondary pollution, etc.
The capacitive deionization (electric adsorption, EST) technology is an electric field generated by an external direct current power supply, and inorganic ions in a flowing solution between electrodes move to an electrode with charges opposite to the charges of the inorganic ions, so that the inorganic ions are adsorbed and removed by an electric double layer generated on the surface of the electrode, and the electric adsorption has the advantages of salt removal: the running cost is low, and only the RO is 1/3-1/2; the requirement on water inflow is low, and the requirement on COD is few; the energy consumption is low, and the voltage between each pair of electrodes only needs 1-2V; no additional agents such as scale inhibitors and reducing agents are required to be added; no secondary pollution, and substances in the concentrated water are all from raw water; the service life is long, and the service life of the core component is more than or equal to 5 years. Therefore, the capacitive deionization technology is widely researched by scholars at home and abroad and aims to apply to a plurality of fields of industrial wastewater treatment, reclaimed water recycling, drinking water purification, seawater and brackish water desalination and the like.
The core component of the capacitive deionization equipment is an electrode material, and the commonly used electrode material is a porous carbon material, such as an activated carbon material, an activated carbon fiber, a carbon aerogel, a carbon nanotube, an ordered mesoporous carbon material and the like. The porous carbon material has the main advantages of large specific surface area, developed mesoporous structure, good conductivity and the like. However, in practical application, the carbon material electrode is seriously damaged and the desalination rate is greatly attenuated along with continuous cycle of adsorption-desorption. For this reason, many researchers have studied membrane-capacitance deionization (MCDI) technology, i.e., a membrane-ion exchange membrane covering the surfaces of two electrodes, such as "modular membrane-capacitance deionization apparatus (CN 108217866A)", "a membrane-electro-adsorption apparatus for desalination system (CN 103693718A)", "a membrane-capacitance deionization system (CN 207158982U)". The oxidation degree of electrode is lower among the MCDI, has reduced that the granule drops under the rivers erode, and can realize abundant desorption, compares in traditional electric Capacity Deionization (CDI), MCDI's desalination efficiency reinforcing, and the circulation adsorption capacity decay rate obviously reduces. However, the membrane-capacitance deionization technology greatly increases the processing cost, the ion exchange membrane is easily contaminated, and the membrane maintenance is inconvenient.
Disclosure of Invention
The utility model discloses to the technical problem who exists among the prior art, provide an electric capacity deionization device, the electrode adopts porous polymer conducting material to make, has acid and alkali-resistance, and is corrosion-resistant, and the electrode damages for a short time, and the low characteristics of continuous cycle operation desalination rate decay rate to design device internal position structure emphatically, provide convenience for the device maintenance, and effectively improved the clearance.
The utility model adopts the technical proposal that: a capacitive deionization device comprises a shell, a current collector, a positive electrode, a negative electrode and a diaphragm, wherein the positive electrode and the negative electrode are made of high-molecular conductive materials, the high-molecular conductive materials are composite conductive high-molecular materials or structural conductive high-molecular materials, the positive electrode and the negative electrode are arranged in the shell in an alternating and parallel mode, the diaphragm is arranged between the positive electrode and the negative electrode, the positive electrode and the negative electrode are respectively connected with the current collector, and a water inlet and a water outlet are formed in the shell.
Preferably, the current collector, the positive electrode and the negative electrode are positioned on the bottom plate, a porous separator is arranged on the bottom plate, and the porous separator is positioned between the positive electrode and the negative electrode. A plurality of parallel flow channels are formed between the positive electrode and the negative electrode.
Preferably, the positive electrodes are disposed on one side surface of the case, the negative electrodes are disposed on the other opposite side surface of the case, a zigzag flow channel is formed between the positive electrodes and the negative electrodes, all of the positive electrodes are connected to one of the current collectors, and all of the negative electrodes are connected to the other current collector.
Preferably, the specific surface areas of the positive electrode and the negative electrodeIs 1-1000m2Per g, the pore diameter is 0.002 μm-100 μm.
Preferably, the resistance values of the positive electrode and the negative electrode are 50-1000 Ω.
Compared with the prior art, the utility model discloses the beneficial effect who has is: 1. the electrode of the utility model is made of polymer conductive material, which is corrosion resistant, acid and alkali resistant, not easy to be oxidized or washed and lost, and prolongs the maintenance period;
2. the electrode, the current collector, the diaphragm and the shell of the utility model are convenient to install, and provide convenience for the maintenance of related personnel;
3. the utility model discloses an electrode has great specific surface area and abundant pore structure, and the polymer conducting material electrode material surface functional group that is favorable to increasing desalination efficiency and uses is few, reduces chemisorption and produces to reduce the decay of cyclic use desalination efficiency, improved the clearance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a capacitive deionization apparatus according to the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the capacitive deionization apparatus according to the present invention.
In the figure 1-casing, 2-current collector, 3-positive electrode, 4-negative electrode, 5-separator, 6-bottom plate, 7-porous separator.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
An embodiment of the utility model discloses electric capacity deionization device, as shown in fig. 1, it includes casing 1, current collector 2, positive electrode 3, negative electrode 4, diaphragm 5 and bottom plate 6, positive electrode 3, negative electrode 4 all adopt polymer conducting material to make, positive electrode 3, negative electrode 4 are in alternative parallel arrangement in casing 1, be provided with diaphragm 5 between positive electrode 3, negative electrode 4, positive electrode 3, negative electrode 4 are connected with current collector 2 respectively, be equipped with the water inlet on casing 1And a water outlet. The current collector 2, the positive electrode 3 and the negative electrode 4 are positioned on the bottom plate 6, a porous separator 7 is arranged on the bottom plate 6, and the porous separator 7 is positioned between the positive electrode 3 and the negative electrode 4. The positive electrode 3 and the negative electrode 4 are connected in series by three groups of electrodes. Three parallel flow channels are formed between the positive electrode 3 and the negative electrode 4. The positive electrode 3 and the negative electrode 4 are made of open-pore microporous conductive plastics, the resistance value is 100 omega-cm, the pore diameter is 0.1-10 mu m, and the cell density is 109-3The bubbles are communicated with each other to adsorb the mixed solution of NaCl and KCl, the solution flow is 30ml/min, the voltage is 1.2V, and the removal rate reaches 45 percent respectively.
Example 2
The embodiment of the utility model discloses electric capacity deionization device, as shown in fig. 2, it includes casing 1, current collector 2, positive electrode 3, negative electrode 4 and diaphragm 5, positive electrode 3, negative electrode 4 all adopt polymer conducting material to make, positive electrode 3, negative electrode 4 are in alternative parallel arrangement in the casing 1, be provided with diaphragm 5 between positive electrode 3, negative electrode 4, be equipped with water inlet and delivery port on the casing 1. The positive electrodes 3 are arranged on one side face of the shell 1, the negative electrodes 4 are arranged on the other opposite side face of the shell 1, a zigzag-type flow channel is formed between the positive electrodes 3 and the negative electrodes 4, all the positive electrodes 3 are connected with one current collector 2, and all the negative electrodes 4 are connected with the other current collector 2. The positive electrode 3 and the negative electrode 4 are made of porous conductive polymer materials, and have a resistance value of 1000 omega cm, a pore diameter of 0.02-0.05 μm, and a specific surface area of 300-1000m2(g) electrosorption treatment of Na2The SO4 solution has the solution flow rate of 30ml/min and the voltage of 1.2V, and the removal rate reaches 39 percent.
The present invention has been described in detail with reference to the embodiments, but the description is only exemplary of the present invention and should not be construed as limiting the scope of the present invention. The protection scope of the present invention is defined by the claims. Technical scheme, or technical personnel in the field are in the utility model technical scheme's inspiration the utility model discloses an essence and protection within range, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change that application scope was made and improve etc. all should still belong to within the protection scope is covered to the patent of the utility model.
Claims (5)
1. A capacitive deionization device, comprising: the lithium ion battery comprises a shell, a current collector, a positive electrode, a negative electrode and a diaphragm, wherein the positive electrode and the negative electrode are made of high-molecular conductive materials, the positive electrode and the negative electrode are alternately arranged in the shell in parallel, the diaphragm is arranged between the positive electrode and the negative electrode, the positive electrode and the negative electrode are respectively connected with the current collector, and the shell is provided with a water inlet and a water outlet.
2. The capacitive deionization apparatus as claimed in claim 1, wherein: the current collector, the positive electrode and the negative electrode are positioned on the bottom plate, the bottom plate is provided with a porous separator, the porous separator is positioned between the positive electrode and the negative electrode, and a plurality of parallel flow channels are formed between the positive electrode and the negative electrode.
3. The capacitive deionization apparatus as claimed in claim 1, wherein: the positive electrode all set up in on a side of casing, the negative electrode all set up in on the relative another side of casing, form broken line type flow channel between positive electrode, the negative electrode, all the positive electrode all with one the current collector is connected, all the negative electrode all with another the current collector is connected.
4. A capacitive deionization unit as claimed in claim 2 or 3, wherein: the specific surface area of the positive electrode and the negative electrode is 1-1000m2Per g, the pore diameter is 0.002 μm-100 μm.
5. A capacitive deionization unit as claimed in claim 2 or 3, wherein: the resistance values of the positive electrode and the negative electrode are 50-1000 omega cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922453626.9U CN212076520U (en) | 2019-12-31 | 2019-12-31 | Capacitor deionization device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922453626.9U CN212076520U (en) | 2019-12-31 | 2019-12-31 | Capacitor deionization device |
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| CN212076520U true CN212076520U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115770A (en) * | 2019-12-31 | 2020-05-08 | 天津万峰环保科技有限公司 | Electrode material for capacitive deionization and capacitive deionization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115770A (en) * | 2019-12-31 | 2020-05-08 | 天津万峰环保科技有限公司 | Electrode material for capacitive deionization and capacitive deionization device |
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