CN209721670U - A kind of fixed bed electrode electrochemical desalting device - Google Patents
A kind of fixed bed electrode electrochemical desalting device Download PDFInfo
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- CN209721670U CN209721670U CN201821810516.2U CN201821810516U CN209721670U CN 209721670 U CN209721670 U CN 209721670U CN 201821810516 U CN201821810516 U CN 201821810516U CN 209721670 U CN209721670 U CN 209721670U
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Abstract
The utility model provides a kind of fixed bed electrode electrochemical desalting device; it is related to resource reclaim and recycles field; it is relatively inefficient when handling Halite water to solve existing Electro Sorb technology; and due to needing constantly to shut down desorption and regeneration, so that the problem that the investment of processing unit is relatively high.Device is in laminated construction, successively includes: the first collector, the fixed electrode of the first packed bed, anion-exchange membrane, cation-exchange membrane, the fixed electrode of the second packed bed and the second collector；The fixed electrode of first packed bed is in permeable structure, forms the first water stream channel；The second water stream channel is formed between anion-exchange membrane and cation-exchange membrane；The fixed electrode of second packed bed is in permeable structure, forms third water stream channel.Using fixed bed electrode structure, in conjunction with the characteristics of Electro Sorb and membrane technology, on the basis of double electrode layer theory, more southern balancing effects is introduced, the ability and efficiency of electrochemical desalting are greatly increased.
Description
[technical field]
The utility model relates to resource reclaims to recycle field, especially a kind of fixed bed electrode electrochemical desalting device.
[background technique]
The demand that the social and economic level of growing population and continuous development is caused to water resource is increasing, people
The freshwater resources that class is depended on for existence are by unprecedented threat.Find the technology and methods that can utilize unconventional water resource
As society there is an urgent need to.The tellurian water resource overwhelming majority exists in the form of seawater or bitter, freshwater resources pole
Its is rare.If can have economically viable desalination technology and methods, it will greatly alleviate freshwater resources this global problem in short supply.
Common desalination technology and methods have evaporation, ion exchange, reverse osmosis etc., but since the desalination of these technologies is with high costs, or
The utilization rate of person's water is low and other disadvantages, so that still there is many limitations in practical applications.In recent years, using electrochemical method
The processing for carrying out water is more and more paid attention to, and has electrodialysis, Electro Sorb etc. using it as representative.Due to electrochemical techniques and
Method, as power is handled, has the advantages that low energy consumption, and secondary pollution is few, and tolerance is strong, in all kinds of processing of water using electricity
Especially except salt treatment aspect has distinctive feature, wherein electro-adsorption demineralization is obtaining the extensive concern in boundary.Electro Sorb skill
Art is the salt ion gone in water removal by the way of Electrostatic Absorption as its name suggests, the basic principle is that using electricity is charged in water
The effect for the electric double layer adsorption storage ion that pole surface is formed realizes the separation of water intermediate ion.Under the action of DC electric field,
Water intermediate ion water intermediate ion is concentrated, in electrode surface periodically adsorption-desorption to realize the desalination of water.Due to
The energy only to charge to electrode double layer paid required in entire treatment process, does not involve phase transformation and overcomes
Osmotic pressure avoids the high temperature in usual water desalination treatment process, the fouling of high pressure and processing unit, blocking failure etc. and asks
Topic.The new channel in desalination field is opened, there is extraordinary popularization and application foreground.However, specifically practice have shown that, electricity is inhaled
Attached technology is relatively inefficient when handling Halite water, and due to needing constantly to shut down desorption and regeneration, so that processing unit
Investment it is relatively high, application range is very limited.It needs to make improvements, to overcome aforesaid drawbacks, give full play to
The advantage of electrochemical desalting, so as to be promoted and applied in more vast range.
[utility model content]
The utility model provides a kind of fixed bed electrode electrochemical desalting device, exists to solve existing Electro Sorb technology
It is relatively inefficient when processing Halite water, and due to needing constantly to shut down desorption and regeneration, so that the investment phase of processing unit
To higher problem.
A kind of fixed bed electrode electrochemical desalting device of the utility model is in laminated construction, successively includes: the first current collection
Pole, the fixed electrode of the first packed bed, anion-exchange membrane, cation-exchange membrane, the fixed electrode of the second packed bed and the second collection
Electrode；The fixed electrode of first packed bed is in permeable structure, forms the first water stream channel；The anion-exchange membrane and sun from
The second water stream channel is formed between proton exchange；The fixed electrode of second packed bed is in permeable structure, and it is logical to form third water flow
Road.
Wherein, between the anion-exchange membrane and cation-exchange membrane further include: separation net and the anion are handed over
The second water stream channel formed between film and cation-exchange membrane is changed to flow through from the separation net.
Wherein, on the outside of the first collector and on the outside of the second collector further include: fixed charge method end plate.
Wherein, the permeable structure of the fixed electrode of first packed bed, specifically uses graininess high-ratio surface, and use
The conductive material of high micro-porosity is as packing material；The permeable structure of the second packed bed fixation electrode, specific use
Granular high-ratio surface, and use the conductive material of high micro-porosity as packing material.
Wherein, the conductive material of the high micro-porosity is absorbent charcoal material, carbon fibre material, carbon carbon nanotubes, graphite
Alkene material or carbon fibre fabric material.Such as: it is made of the active carbon particle that partial size is 2~3 millimeters, specific surface is greater than
1000m2/g, micropore volume are greater than 0.5cm3/g.
Wherein, first collector is made of graphite or titanium, and second collector is made of graphite or titanium.
Wherein, the separation net is made of polymer or non-conducting material.
The fixed bed electrode electrochemical desalting device of the utility model, using fixed bed electrode structure, in conjunction with Electro Sorb and
The characteristics of membrane technology, introduces more southern balancing effects on the basis of double electrode layer theory, greatly increase electrochemical desalting ability and
Efficiency, promoting electrode mass transfer dynamics process so that the potentiality of electrochemical desalting are given full play to largely reduces desalination
Investment cost and operating cost, greatly improve the acceptance of user, make the technology really and can obtain answering extensively for various circles of society
With.
[Detailed description of the invention]
Fig. 1 is the fixed bed electrode electrochemical desalting apparatus structure schematic diagram of the utility model embodiment 1；
Fig. 2 is apparatus structure used in the method for the utility model embodiment 2 and water flow schematic diagram；
Fig. 3 be the utility model embodiment 2 method switching electric field after used apparatus structure and water flow schematic diagram.
[specific embodiment]
It is studied through inventor and experiment discovery repeatedly, existing Electro Sorb technology uses the solid electrode of monolithic forming, institute
The water of processing is flowed through from the clearance channel formed between two electrodes.Problem brought by such structure be electrode it is intracorporal from
Son is needed through diffusion disengaging, and dynamic process is slow, and especially when handling Halite water, required thickness of electrode is larger,
The disengaging time-consuming of ion is longer.Therefore it needs to try that water flow can be flowed through out of electrode body, to improve the dynamics of ion disengaging
Process.Meanwhile when electrode carries out Electro Sorb, with electrode the ion with homocharge be discharged electrode surface (namely micropore
Region, for pore space electrode), this part ion is either expelled to water stream channel, or is adsorbed by the electrode on opposite,
No matter whichever, can all have an adverse effect to the ion concentration for producing water, therefore should try to solve the problems, such as this.
Based on above-mentioned discovery, it is the group by the way of filling fixed bed electrode coupled ion exchange membrane that inventor, which specifically conceives,
At electrochemical desalting device, water flow is allowed to flow in electrode body, mass transfer dynamics when adsorption-desorption sufficiently to improve ion
Process, in conjunction with use amberplex as structure aid materials, it is often more important that jack per line ion can be formed and be stopped, do not allowed
It enters water stream channel or is adsorbed by face electrode, makes full use of more southern balancing effects instead, can attract more opposite signs
Ion improves the effect of desalination to increase apparent adsorption capacity.It is described in detail by the following examples.
Embodiment 1, this implementation fixed bed electrode electrochemical desalting device, it is shown in Figure 1, be in laminated construction, successively
It include: the first collector 101, the fixed electrode 102 of the first packed bed, anion-exchange membrane 103, separation net 104, cation exchange
The fixed electrode 106 of film 105, the second packed bed and the second collector 107.The fixed electrode 102 of first packed bed is in permeable structure,
Form the first water stream channel 108；The second water stream channel 109 is formed between anion-exchange membrane 103 and cation-exchange membrane 105,
Second water stream channel 109 flows through inside separation net 104；The fixed electrode 106 of second packed bed is in permeable structure, forms third water
Circulation road 110.107 outside of first collector, 101 outside and the second collector further include: fixed charge method end plate 111.First packed bed
Fixed electrode 102 and the fixed electrode 106 of the second packed bed can be using the conduction materials of graininess high-ratio surface, high micro-porosity
As packing material, the materials such as carbon fiber, carbon carbon nanotubes, graphene, carbon fibre fabric are can also be used in material such as active charcoal class material
Material, such as: it can be made of the active carbon particle that partial size is 2~3 millimeters, typically specific surface is greater than 1000m2/g, micropore
Volume is greater than 0.5cm3/g, therefore water flow to be processed can be fixed from the fixed electrode 102 of the first packed bed and the second packed bed
Electrode 106 flows through, and forms water stream channel.First collector 101 and the second collector 107 can be using resistance to decoration materials such as graphite, titaniums
Material is made.Separation net 104 (can have certain thickness) can use polymer or other non-conducting materials.
Embodiment 2, the fixed bed electrode electrochemical desalting method for implementing this implementation, referring to fig. 2, shown in Fig. 3, are used
Fixed bed electrode electrochemical desalting device, be in laminated construction, successively include: the first collector 201, the fixed electricity of the first packed bed
Pole 202, anion-exchange membrane 203, separation net 204, cation-exchange membrane 205, the fixed electrode 206 and second of the second packed bed
Collector 207.The fixed electrode 202 of first packed bed is in permeable structure, forms the first water stream channel 208；Anion-exchange membrane 203
The second water stream channel 209 is formed between cation-exchange membrane 205, the second water stream channel 209 flows through inside separation net 204；
The fixed electrode 206 of second packed bed is in permeable structure, forms third water stream channel 210.First collector, 201 outside and second
207 outside of collector further include: fixed charge method end plate 211.The fixed electrode 202 of first packed bed and the fixed electrode 206 of the second packed bed
It can also be adopted using such as active charcoal class material of conductive material of graininess high-ratio surface, high micro-porosity as packing material
With materials such as carbon fiber, carbon carbon nanotubes, graphene, carbon fibre fabrics, such as: the active carbon that can be 2~3 millimeters by partial size
Particle composition, typically specific surface are greater than 1000m2/g, and micropore volume is greater than 0.5cm3/g, therefore water flow to be processed can be with
It is flowed through from the fixed electrode 202 of the first packed bed and the fixed electrode 206 of the second packed bed, forms water stream channel.First collector
201 and second collector 207 can be made of the resistance to exterior material such as graphite, titanium.Separation net 204 (can have certain thickness) can be with
Using polymer or other non-conducting materials.
Detailed process is with the first collector 201 for anode, is cathode with the second collector 207, applies DC voltage.
When the water flow 212 containing certain ion concentration flows into the first water stream channel 208 of the fixed electrode 202 of the first packed bed
When, i.e., when the water flow 212 containing certain ion concentration flows into filling fixed bed anode, fill the adsorption of fixed bed anode
Anion, and by cation exclusion into bulk water body.Since the barrier effect of anion-exchange membrane 203 is (theoretically cationic
Anion-exchange membrane cannot be penetrated), this partial cation will be enriched in body phase solution.In order to keep electroneutral, anion will
Enrichment is migrated so far and formed from water stream channel, and is discharged in the form of concentrated water with water flow 212.Similarly, when containing centainly from
When the water flow 213 of sub- concentration flows into the third water stream channel 210 of the fixed electrode 206 of the second packed bed, i.e., when containing certain ion
When the water flow 213 of concentration flows into filling fixed bed cathode, cation, which is attracted to, fills fixed bed negative terminal surface, and anion quilt
Repel into body phase solution.To keep electroneutral, cation migrates so far from water stream channel and forms enrichment, and with water flow
213 are discharged in the form of concentrated water.So, two part Ion transfers will be had from water stream channel to filling fixed bed electrode
In, a part is the ion for filling the absorption of fixed bed electrode surface electric double layer, and another part is since jack per line ion is ostracised simultaneously
Under the blocking of amberplex, according to the principle that more Nan Pings are weighed, more counter ions is attracted to form enrichment.So that the second water
The ion concentration for the flowing water 214 being discharged in circulation road 209 substantially reduces, namely realizes the desalination of water.
Then, when filling fixed bed electrode needs to carry out regeneration process, can also rule of thumb exchange-column shift first collect
The polarity of electrode 201 and the second collector 207 is cathode with the first collector 201, be anode with the second collector 207, apply
Add DC voltage.
When the water flow 215 containing certain ion concentration flows into the first water stream channel of the fixed electrode 202 of the first packed bed
208, and the third water stream channel 210 of the fixed electrode 206 of the second packed bed of inflow of the water flow 216 containing certain ion concentration
When, the counter ion for originally adsorbing and being enriched with passes through anion-exchange membrane 203, cation-exchange membrane under the action of electric field force
205 enter in the second water stream channel 209, form concentrated water 217 and are discharged.And filling fixed bed electrode at this time will adsorb again,
But due to the direction of applied field with before on the contrary, adsorbed ion band electric symbol inverted, and at this time due to
The barrier effect of amberplex, the counter ion in water stream channel cannot enter the fixed electricity of packed bed through amberplex
Pole, jack per line ion can enter the second water stream channel 209, the yin in the fixed electrode of both sides packed bed by amberplex instead
Cation is entered in the second water stream channel 209 and is also discharged with concentrated water 217.And the water intermediate ion for flowing through filling fixed bed electrode is dense
Degree declines respectively, and water flow 215, the water flow 216 for flowing out two filling fixed bed electrodes are demineralized water.In the concrete realization, phase
The water stream channel of concentrated water and demineralized water should be switched, i.e. switching recovery channel and concentrated water pipeline.
It can be seen that the utility model is all generating demineralized water in real time, only demineralized water regardless of under which kind of power-up direction
It results from different channels.That is, the desalination of water can be carried out continuously without stopping using the utility model method
Work is regenerated, it is only necessary to carry out some switchings to the control of water flow.So, the utilization of device is substantially increased
Efficiency, and the ability of desalination has also obtained significantly being promoted.
Here the description and application of the utility model are all only illustrative and exemplary, are not intended to this is practical new
The scope limitation of type is in the above-described embodiments.The deformation and change of embodiments disclosed herein be it is entirely possible, for that
For a little those skilled in the art, the replacement of embodiment and equivalent various parts are well known.Art technology
Personnel should also be clear that in the case where not departing from the spirit or essential characteristics of the utility model, and the utility model can be with
In other forms, structure, arrangement, ratio, and realized with other components, material and component, and it is practical not departing from
In the case where novel scope and spirit, other deformations and change can be carried out to embodiments disclosed herein.
Claims (8)
1. a kind of fixed bed electrode electrochemical desalting device, which is characterized in that be in laminated construction, successively include: the first collector,
First packed bed fixes the fixed electrode of electrode, anion-exchange membrane, cation-exchange membrane, the second packed bed and the second current collection
Pole；The fixed electrode of first packed bed is in permeable structure, forms the first water stream channel；The anion-exchange membrane and cation
The second water stream channel is formed between exchange membrane；The fixed electrode of second packed bed is in permeable structure, forms third water stream channel.
2. fixed bed electrode electrochemical desalting device as described in claim 1, which is characterized in that the anion-exchange membrane with
Between cation-exchange membrane further include: formed between separation net and the anion-exchange membrane and cation-exchange membrane
Two water stream channels are flowed through from the separation net.
3. fixed bed electrode electrochemical desalting device as described in claim 1, which is characterized in that on the outside of the first collector with
And second on the outside of collector further include: fixed charge method end plate.
4. fixed bed electrode electrochemical desalting device as described in claim 1, which is characterized in that first packed bed is fixed
The permeable structure of electrode specifically uses graininess high-ratio surface, and is used as filling material using the conductive material of high micro-porosity
Material；The permeable structure of the fixed electrode of second packed bed, specifically uses graininess high-ratio surface, and use high micro-porosity
Conductive material as packing material.
5. fixed bed electrode electrochemical desalting device as claimed in claim 4, which is characterized in that the high micro-porosity is led
Electric material is absorbent charcoal material, carbon fibre material, grapheme material, carbon nano carbon tube material or carbon fibre fabric material.
6. fixed bed electrode electrochemical desalting device as claimed in claim 4, which is characterized in that first packed bed is fixed
Electrode is made of the active carbon particle that partial size is 2~3 millimeters, and specific surface is greater than 1000m2/g, and micropore volume is greater than 0.5cm3/g.
7. fixed bed electrode electrochemical desalting device as described in claim 1, which is characterized in that first collector uses
Graphite or titanium are made, and second collector is made of graphite or titanium.
8. fixed bed electrode electrochemical desalting device as claimed in claim 2, which is characterized in that the separation net is using polymerization
Object or non-conducting material are made.
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| CN201821810516.2U CN209721670U (en) | 2018-11-05 | 2018-11-05 | A kind of fixed bed electrode electrochemical desalting device |
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| CN201821810516.2U CN209721670U (en) | 2018-11-05 | 2018-11-05 | A kind of fixed bed electrode electrochemical desalting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115571954A (en) * | 2022-11-18 | 2023-01-06 | 中国科学院合肥物质科学研究院 | Capacitive deionization adsorption electrode and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115571954A (en) * | 2022-11-18 | 2023-01-06 | 中国科学院合肥物质科学研究院 | Capacitive deionization adsorption electrode and preparation method thereof |
| CN115571954B (en) * | 2022-11-18 | 2023-03-07 | 中国科学院合肥物质科学研究院 | Capacitive deionization adsorption electrode and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220713 Address after: Room 6144, building 6, No. 112-118, Gaoyi Road, Baoshan District, Shanghai 200439 Patentee after: Shanghai Anjiang environmental protection technology partnership (L.P.) Address before: 213034 No.9 Chuangye Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: Sun Xiaowei |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230327 Address after: Room 5015, Zhangjiang Creative Building, No. 1559, Zuchongzhi Road, Zhangjiang High tech Park, Pudong New Area, Shanghai, March 2012 Patentee after: Shanghai Hongji Water Industry Technology Co.,Ltd. Address before: Room 6144, building 6, No. 112-118, Gaoyi Road, Baoshan District, Shanghai 200439 Patentee before: Shanghai Anjiang environmental protection technology partnership (L.P.) |
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| TR01 | Transfer of patent right |