CN106044966A - Electrodialysis apparatus - Google Patents

Abstract

The invention provides an electrodialysis apparatus which prevents leakage of liquid and appropriately secures a flow path resistance of a dispenser, and is capable of suppressing pressure loss to a minimum to efficiently perform electrodialysis. In the electrodialysis apparatus, a chamber frame includes a net main body portion disposed at a central position and a frame portion located around the net main body portion, and the frame portion includes a dispenser having a liquid inlet and a liquid outlet and having flow paths which are respectively configured between the liquid inlet and the net main body and between the liquid outlet and the net main body, opening portions being configured respectively at at least one or more places of one side surface and at least two or more places of the other side surface of the flow paths in an alternately staggered manner.

Description

Electrodialysis plant

Technical field

The present invention relates to a kind of electrodialysis plant.

Background technology

Now, the structure using the electrodialysis plant of ion exchange membrane is as follows: in cation exchange membrane and anion exchange By alternately laminated to cation exchange membrane and anion exchange membrane in the way of sandwiching chamber frame between film, and be arranged in electrode it Between, use fastening frame fastening two ends, be thus alternatively formed enriched chamber and desalting compartment in inside.

Typically, the chamber frame used in such electrodialysis plant includes for keeping cation in middle position Host's body at the interval between exchange membrane and anion exchange membrane, and there is net for configuring this host's body install and open The frame section of oral area.

Particularly, at frame section, inlet, liquid outlet it is installed and possesses the allotter of stream.Such as Fig. 6 A～Fig. 6 C institute Show, as this allotter 72, be mostly following structure: stream 73 is formed as the grooved shape at one lateral opening, from entering The treatment fluid that liquid mouth 71 flows into is flowed out to the net mounting opening 74 being configured with host's body 75 by stream 73.Reference 70 representational framework portions.

It addition, be known to stream to be formed as the allotter (for example, referring to patent documentation 1) of hollow shape (tunnel type).

It addition, as it is shown in fig. 7, and motion has is configured with stream 731, link stream 732, the allotter of lower stream 733 720 (for example, referring to patent documentations 2).Reference 700 representational framework portion, reference 800 represents ion exchange membrane, accompanying drawing Labelling 710 represents that inlet, reference 740 represent that net mounting opening, reference 750 represent host's body.

Prior art literature

Patent documentation

Patent documentation 1: the open CN102910713A publication of Chinese patent

Patent documentation 2: the open CN102267747A publication of Chinese patent

Summary of the invention

The problem that invention is to be solved

But, the one side of the stream 73 of the allotter 72 shown in Fig. 6 A, Fig. 6 B is along flow path length opening, therefore, and tool Having following problem, shown in Fig. 6 B, Fig. 6 C, adjacent ion exchange membrane 80 enters in the position of this opening.So, exchange at ion The opposite sides etc. of film 80 will produce gap S, and liquid (treatment fluid or electrolyte) leaks into this gap S, becomes generation liquid leakage Main cause.To this, in the allotter of patent documentation 1, stream is hollow shape, the most there is not the hidden danger that liquid leakage occurs.But It is that the stream of the allotter of patent documentation 1 is hollow shape, thus flow path resistance is little.

As it has been described above, the structure of electrodialysis plant is, stacking is multiple be clipped in cation exchange membrane and anion exchange membrane it Between chamber frame, thus constitute desalting compartment and structure that enriched chamber is alternatively formed.Then, it is being configured at desalting compartment or enriched chamber In chamber frame, liquid (treatment fluid or electrolyte) flows into from inlet, and flows into host's body via the stream of allotter.

Therefore, if the flow path resistance being especially arranged in the allotter of the chamber frame of desalting compartment is less, treatment fluid is the most not Can balancedly flow into each chamber frame being arranged in multiple desalting compartment, such as, inflow can be concentrated to be configured at liquid supply nozzle side Chamber frame.If treatment fluid or electrolyte the most balancedly flow into the chamber frame of multiple desalting compartment or enriched chamber, then having can Following problem can be produced, i.e. produce the bias current of electric current, and, in the chamber that liquid flowing is bad, relative to the electric current of flowing, Not catching up with to the ion supply of ion exchange membrane, the unfavorable condition such as generation causing the rising of voltage, oxide skin (scale) is sent out Raw, thus cause energising to stop.

It addition, the stream of the allotter of patent documentation 1 is hollow shape, thus the pressure loss is big.That is, the electricity of filter press type Electrodialysis apparatus is to constitute by pressurizeing the multiple chamber frames being clipped between cation exchange membrane and anion exchange membrane 's.Therefore, when stream is hollow shape, it is possible to produce following problem, cause owing to applying plus-pressure in stream entirety Deform thus produce the pressure loss., there is the bias current of electric current in its result, still can produce the rising of voltage, oxide skin The bad phenomenon of generation etc., thus cause energising to stop.

It addition, the stream of the allotter 720 of patent documentation 2 is upper stream 731 and lower stream 733 these two sections, therefore, such as figure Shown in 7, enter in the middle of stream and have ion exchange membrane 800.So, electrolyte easily drains to adjacent ion-exchange chamber.

And, the flow path width of the allotter 720 of patent documentation 2 is 0.2mm～0.8mm, narrower, therefore when attempting in chamber During the flow that in the frame of room, flowing needs, the pressure loss is the highest, and pump power cost also can uprise, and easily produces electrolyte Leak into the External leakage outside ion-exchange chamber, the electrolyte internal leakage leaking into adjacent ion-exchange chamber etc. bad existing As.

Point in view of the above-mentioned problems, the purpose of one embodiment of the present invention is to provide following electrodialysis plant, its Prevent liquid from leaking, suitably guarantee the flow path resistance of allotter, and the pressure loss can be suppressed to minimally carry out height The electrodialysis of effect.

For solving the scheme of problem

In view of above-mentioned problem, the electrodialysis plant of one embodiment of the present invention possesses following structure.That is,

Between minus plate and positive plate, so that the side that chamber frame is between cation exchange membrane and anion exchange membrane Formula multiple described cation exchange membranes alternately arranged and described anion exchange membrane, thus constitute enriched chamber and desalting compartment,

This electrodialysis plant is characterised by,

Described chamber frame possesses the frame section of the host's body being arranged in middle position and the surrounding being positioned at this host's body,

Described frame section possesses inlet, liquid outlet and has the allotter of stream,

Between described inlet and described host's body and between described liquid outlet and described host's body, respectively It is configured with described stream,

More than at least one place of the one side of described stream and more than at least two places of another side, with interlaced with each other Configuration is respectively equipped with peristome.

The effect of invention

According to an embodiment of the present invention, using the teaching of the invention it is possible to provide a kind of electrodialysis plant, this electrodialysis plant can prevent liquid from leaking, Suitably guarantee the flow path resistance of allotter, and the pressure loss can be suppressed to minimally carry out efficient electrodialysis.

Accompanying drawing explanation

Fig. 1 is the approximate vertical view of the chamber frame of the electrodialysis plant use of one embodiment of the present invention.

Fig. 2 A is the amplification plan view of the allotter shown in Fig. 1.

Fig. 2 B is the sectional elevation of the allotter shown in Fig. 2 A.Fig. 2 B-(a) be the II-II of Fig. 2 A to the sectional elevation regarded, Fig. 2 B-(b) be the III-III of Fig. 2 A to the sectional elevation regarded, Fig. 2 B-(c) is that the IV-IV of Fig. 2 A is to the sectional elevation regarded.

Fig. 3 is that the I-I of Fig. 2 A is to the longitudinal section regarded.

Fig. 4 is the liquid flowing of the allotter schematically showing the electrodialysis plant being arranged in one embodiment of the present invention Sectional view.

Fig. 5 is the assembling figure of the outline side profile construction of the electrodialysis plant representing one embodiment of the present invention.

Fig. 6 is the explanatory diagram of the structure that conventional allotter is described.Fig. 6 (A) is part amplification plan view, and Fig. 6 (B) is figure The V-V of 6 (A) is to the sectional view regarded, and Fig. 6 (C) is the sectional view of the liquid flowing that allotter is schematically described.

Fig. 7 is the explanatory diagram of the structure that conventional allotter is described.

Fig. 8 is the amplification plan view of the allotter shown in Fig. 1.

Fig. 9 is that the VI-VI of Fig. 8 is to the longitudinal section regarded.

Description of reference numerals

1 chamber frame；1A desalination chamber frame；1B concentration chamber frame；2 host's bodies；3 frame section 4 net mounting opening；5 enter Liquid mouth；6 liquid outlets；7,8 connected entrance；9 allotters；10 electrodialysis plants；10a minus plate；10b positive plate；11 desalting compartments；12 is dense Contracting room；13 fastening plates；30 ribs；31,32 wire rib；71,710 inlet；72,720 allotter；Stream on 73 streams 731；732 Link stream；733 times streams；74,740 net mounting opening；75,750 host's body；80 ion exchange membranees；90 streams；91 hang down Straight portion；92 rakes；94 breakthrough parts；910,920 peristome；C cation exchange membrane；A anion exchange membrane；S gap；J、K、L、 M welds portion

Detailed description of the invention

Structure ＞ of ＜ chamber frame

The diagrammatic top of what the electrodialysis plant 10 of one embodiment of the present invention that what Fig. 1 represented is used chamber frame Figure.The chamber frame 1 used in the present invention has: frame section 3, and it is formed as frame shape, and possesses net installation in middle position Peristome 4；And host's body 2, it is arranged in this net mounting opening 4.Host's body 2 preferably by by Netlon method Point of intersection is heating-fusion bonded thus the net that formed is constituted.It addition, frame section 3 and host's body 2 preferably come integrated by welding etc..

Generally, electrodialysis plant 10 is by being alternately arranged chamber frame 1 as above and ion exchange membrane (anion Exchange membrane A and cation exchange membrane C), and utilize chamber frame 1 to clamp the ion exchange membrane between chamber frame 1 and constitute. That is, in chamber frame 1, the space utilizing host's body 2 of the net mounting opening 4 being arranged on frame section 3 to guarantee will become ion Switch room.Host's body 2 is arranged in the net mounting opening 4 of rectangular shape, as the function of the spacer member of flow path portion, And being reliably prevented adjacent ion exchange membrane to come in contact, net mounting opening 4 is formed at the middle position of chamber frame 1.

Host's body 2 is preferably thermoplastic system, such as, as it is shown in figure 1, in the net mounting opening 4 of chamber frame 1 The portion that welds J, K the two position in longitudinal direction around, high-frequency induction is passed through at the portion that welds L, M the two position on width Heating carries out welding, thus is arranged on frame section 3.

Preferably, above-mentioned frame section 3 is by the sheet material manufacture of thermoplastic system or synthetic rubber.

It addition, be preferably formed with rib 30 in the one side side (face side in figure) of frame section 3, rib 30 is preferably formed with Netted with the angle that the outer rim of chamber frame 1 is 45 degree.Rib 30 can be by such as at thermoplastic system or synthetic rubber Utilize the dip roll defining cancellate rag to form when sheet material manufactures thus be easily manufactured out.With dip roll The cancellate rag form of sheet material of clathrate rib be preferably, width 100 μm～300 μm, the degree of depth are 60 μm～200 μm Section is the rag of triangle when observing, and the spacing of grid is preferably 2mm～10mm.By thus manufacture with clathrate rib Sheet material is cut into the frame shape of given size, and uses as frame section 3.It addition, another side side (back side in figure) is excellent Elect even surface as.Owing to this rib 30 sandwiches ion exchange membrane and during laminated multi-layer at chamber frame, by adjacent ion exchange membrane pressure It is made as wire, therefore prevents electrolyte from leaking into outside ion-exchange chamber (hereinafter also referred to as External leakage.), or leak into phase Adjacent ion-exchange chamber is (hereinafter also referred to as internal leakage.) phenomenon.

It addition, be provided with inlet 5 and liquid outlet 6 at this frame section 3.This inlet 5 and liquid outlet 6 are respectively via connected entrance 7 and connected entrance 8 and connect with net mounting opening 4.Have for guaranteeing liquid it addition, be fitted together to respectively at connected entrance 7 and connected entrance 8 The allotter 9 of stream.It is formed with a plurality of stream 90 at this allotter 9.The allotter 9 of inlet 5 side makes inlet 5 and net install Peristome 4 (host's body 2) connects, and, the allotter 9 of liquid outlet 6 side makes liquid outlet 6 and net mounting opening 4 (host's body Portion 2) connection.

Allotter 9 is preferably thermoplastic system, thermostability, liquid dispersion excellence, has the structure preventing internal leakage Make.Allotter 9 is preferably manufactured by extrusion molding.Preferably, its thickness is 0.4mm～2mm, total length (length) be 20mm～ 60mm。

Secondly, the structure of allotter 9 is illustrated according to Fig. 2 and Fig. 3.Fig. 2 A represents the allotter being configured at chamber frame Amplification plan view.Fig. 2 B represents the sectional elevation of the allotter shown in Fig. 2 A, and Fig. 2 B-(a) represents that the II-II of Fig. 2 A is to the horizontal stroke regarded Sectional view, Fig. 2 B-(b) represent the III-III of Fig. 2 A to the sectional elevation regarded, Fig. 2 B-(c) represents that the IV-IV of Fig. 2 A is to regarding Sectional elevation.Fig. 3 represents that the I-I of Fig. 2 A is to the longitudinal section regarded.

As it can be seen, allotter 9 has multiple stream 90 in the direction of the width.It is arranged in the allotter 9 of inlet 5 side Stream 90 makes the liquid (following, to refer to treatment fluid or electrolyte) from inlet 5 inflow to the host being arranged in net mounting opening 4 Body 2 (ion-exchange chamber) flows out.Be arranged in the allotter 9 of liquid outlet 6 side make host's body 2 from net mounting opening 4 (from Sub-switch room) liquid that flows into flows out to liquid outlet 6.The preferably rectangular shape of section shape of stream 90 or elliptical shape.

As it is shown on figure 3, be provided with the peristome of front F side opening to this stream 90 in a staggered fashion at stream 90 910 and the peristome 920 of rearwardly B side opening.Therefore, by the liquid of the stream 90 of said structure, in figure 3 at stream 90 Rise or fall with crawling the most in left-right direction.

That is, the stream 90 of present embodiment is by being formed at F side, front in a staggered fashion by peristome 910,920 With back surface B side, thus obtain good flow path resistance.

And, compared with the allotter of the conventional stream with hollow shape, it is possible to be formed as slim.In order to make stream Being formed as hollow shape, need snugly to form two sheet materials with the recess forming stream, therefore, thickness becomes 1mm Left and right.On the other hand, the allotter 9 of present embodiment can be formed by extrusion molding, thus thickness can be 0.4mm～ About 0.6mm.The thickness of allotter 9 depends on the thickness of chamber frame 1, but, it is contemplated that the reduction of resistance, liquid circulation power Reduction, chamber frame 1 is preferably formed into thinner thickness.Therefore, if allotter can be made thinning, then the reduction of resistance it is capable of Reduction with liquid circulation power.

The length of each peristome of the peristome 910 and 920 of described stream 90 be preferably the total length of stream 90 10%～ 33%.By making the length of the peristome of peristome 910 and 920 in the range of this, it is possible to prevent ion exchange membrane to be deep into out In oral area 910 and 920 such that it is able to prevent the generation that liquid leaks.

It is further preferred, that stream 90 by from the top of Fig. 3 by be located at the peristome 920 of back surface B side bottom and The upper end of the peristome 910 being located at F side, front configures overlappingly thus is formed with breakthrough part 94.It addition, similarly, preferably It is, by the upper end of the bottom of the peristome 910 by being located at F side, front and the peristome 920 being located at back surface B side overlappingly Configure thus form breakthrough part 94.

Utilize this breakthrough part 94, it is possible to reduce the pressure loss of stream 90 largely.The stream of described breakthrough part 94 The length in direction is preferably 2mm～6mm.Above-below direction in a length of Fig. 2 A, Fig. 2 B and Fig. 3 of path direction.It addition, for The quantity of the breakthrough part 94 being formed in the path direction of stream 90, preferably one stream sets 2～8.Breakthrough part The quantity of 94 suitably can change according to the total length of allotter 9, the width of peristome 910 and 920 and Opening length etc..

The allocation position of peristome 910 and 920 is not limited to the scheme shown in Fig. 2 A, Fig. 2 B and Fig. 3, in F side, front at least Configuring more than at two, B side at least configures more than at one overleaf, or, it is also possible at least configure more than at one in F side, front, Overleaf more than B side opening at least two place.Described " at one " in description refers to a part of opening in flow path length, and It it not the whole length upper shed at stream.The total quantity of peristome is preferably 3～9.

The width of stream 90 is preferably 1mm～3mm.If the width of stream 90 is much smaller than 1mm, it is likely that make flowing pressure Power loss is increased dramatically.If the width of stream 90 is much larger than 3mm, it is likely that cause ion exchange membrane to enter so that liquid leaks Preventing effectiveness is the best, and the entrance being additionally, since ion exchange membrane makes the pressure loss also increase.

If the degree of depth of stream 90 is the deepest, then flow path portion backboard is thinning and flow path portion intensity reduces, and easily produces because of ion Falling into of exchange membrane and the deformation that causes.The deformation caused to prevent this intensity from reducing, the degree of depth of stream 90 is preferably divides The 50%～80% of orchestration thickness.

And, the interval (spacing) of multiple adjacent streams 90 is preferably 1.5 times～4 of flow path width in inlet 5 side Times.It addition, the interval (spacing) of multiple adjacent streams 90 is preferably stream width in net mounting opening 4 (ion-exchange chamber) side 1.5 times～10 times of degree.This is because be conducive to towards ion-exchange chamber towards ion-exchange chamber with the form of radial diffusion Liquid dispersion.

It addition, the bar number of the stream 90 of allotter is desired for 3～20, but can be according to the size of chamber frame 1, host The size of body 2 etc. and suitably change.

As shown in Fig. 2 A, Fig. 2 B, it is preferred that be arranged in the such as allotter 9 of inlet 5 side stream 90 with enter The position above that liquid mouth 5 connects is formed as the vertical component effect 91 orthogonal with the width of allotter 9.It is further preferred, that configuration The host's body 2 (ion-exchange chamber) with net mounting opening 4 at the stream 90 of the such as allotter 9 of inlet 5 side is connected Lower section be the rake 92 being formed towards this net mounting opening 4 with radial inclination.It addition, be arranged in liquid outlet 6 Similarly, in liquid outlet side, the position being connected with liquid outlet 6 is preferably formed into vertical component effect 91 to the stream 90 of the allotter 9 of side, The position being connected with net mounting opening 4 (ion-exchange chamber) is preferably formed into towards net mounting opening 4 (ion-exchange chamber) Rake 92 with radial inclination.

If stream 90 is the shape vertically extended with width, then flow path resistance will diminish, and has liquid and holds Runny tendency.But, electrodialysis plant is the chamber that laminated multi-layer is clipped between cation exchange membrane and anion exchange membrane Room frame, and it is alternatively formed the structure of desalting compartment and enriched chamber.Further, in the chamber frame being configured at desalting compartment, from inlet stream Entering treatment fluid, this treatment fluid flows into host's body (ion-exchange chamber) via the stream of allotter.It addition, it is dense being configured at In the chamber frame of contracting room, from inlet flow into electrolyte, this electrolyte flow into via the stream of allotter host's body (from Sub-switch room).

Therefore, if the flow path resistance of stream is too small, then treatment fluid or electrolyte cannot be made balancedly to flow into and to be arranged in Multiple desalting compartments or each chamber frame of enriched chamber, but can concentrate and flow into the chamber frame being arranged in liquid supply nozzle side.

If treatment fluid or electrolyte the most balancedly flow into the chamber frame of multiple desalting compartment or enriched chamber, it is likely that Produce following problem, i.e. produce the bias current of electric current, and, in the liquid bad chamber of flowing, relative to the electric current of flowing, from Son supply does not catches up with, and causes the unfavorable condition such as generation of the rising of voltage, oxide skin to occur, thus causes energising to stop.From upper From the point of view of the problem points stated, the stream of allotter needs the biggest flow path resistance.Further, according to desalting compartment, enriched chamber's supply Regulation flow, it is considered to the liquid dispersion between indoor liquid dispersion, chamber, determine to be arranged in chamber frame point The number of orchestration, the number of stream, the size (width, the degree of depth, length) of stream, thus obtain most suitable flow path resistance.

By forming rake 92, it is possible to increase flow path resistance, improve and flow into balance.It addition, by appropriately designed institute The Opening length of peristome 910 and 920, position, flow path width and the inclination angle of rake 92 stated, it is possible to obtain good stream Roadlock power.And, the rake 92 of multiple streams 90 is all formed with the form of radial diffusion, therefore, it is possible to make liquid (process Liquid or electrolyte) flow out to the wider scope of host's body 2 (ion-exchange chamber), it is favorably improved liquid dispersion efficiency.On The effect of the rake 92 stated in the allotter 9 being arranged in inlet 5 side it is stated that, the allotter 9 of liquid outlet 6 side has Effect is: tonneau is with above-mentioned rake 92, it is possible to wider from host's body 2 (ion-exchange chamber) of net mounting opening 4 Scope flows liquid into effectively.

Carry the chamber frame 1 of the allotter 9 possessing said structure at electrodialysis plant 10, and proceed by electrodialysis, this If sample, as shown in Figure 4, the liquid (treatment fluid or electrolyte) flowed into from inlet 5 obtains suitable stream in stream 90 While resistance, flow out to host's body 2 (ion-exchange chamber) of net mounting opening 4.That is, configured by interlaced with each other Peristome 910 and 920, makes to flow into crawling about liquid, thus plays flow path resistance.And, from the net of net mounting opening 4 The liquid that main part 2 (ion-exchange chamber) flows into flows out to liquid outlet 6 with also obtaining suitable flow path resistance in stream.By This, make liquid balancedly flow into each chamber frame 1 being arranged in multiple desalting compartment or enriched chamber such that it is able to carry out with being in admirable proportion Electrodialysis.It addition, compared with the allotter of the conventional stream with hollow shape, it is possible to be formed as slim, it is thus possible to will It is suppressed to Min. because deforming the generation of the pressure loss caused, contributes to implementing good electrodialysis.

And, more than at least one place of the one side of the stream of allotter with at the opposite side relative with described one side More than at least two places in face it is respectively equipped with peristome with configuration interlaced with each other.Adjacent ion exchange membrane (cation exchange membrane C And anion exchange membrane A) fall in described peristome 910, in 920, produce gap.By this gap, flow into from inlet 5 Liquid can leak and flow in adjacent chamber, but by making peristome the most interlaced with each other arranges, it is possible to effectively Prevent the generation that liquid leaks.

The allotter 9 of present embodiment is not limited to above-mentioned content, it is possible to have the structure shown in Fig. 8, Fig. 9.Fig. 8 is The amplification plan view of the allotter shown in Fig. 1.Fig. 9 is that the VI-VI of Fig. 8 is to the longitudinal section regarded.

As shown in Figure 8, Figure 9, at the allocation position of peristome 910 of the allotter 9 of present embodiment, preferably with formation Wire rib 31 is formed on the face of the side that the side of this peristome 910 is contrary.It addition, in the allocation position of peristome 920, preferably The face of the side contrary with the side forming this peristome 920 is formed with wire rib 32.

Preferably, the width of wire rib 31,32 is 100 μm～400 μm, and height is 20 μm～150 μm, and section shape is Triangle or half elliptic.In at respective the one of peristome 910 and 920, it is preferably formed as the wire rib 31,32 of more than 1, More preferably form the wire rib 31,32 of more than 2, further preferably form the wire rib 31,32 of more than 3.A plurality of wire rib 31, in 32 each wire rib 31 be preferably spaced 2mm～10mm, each wire rib 32 be preferably spaced 2mm～10mm.At chamber Frame 1 sandwiches ion exchange membrane and during laminated multi-layer, and adjacent ion exchange membrane is also compressed to line in allotter portion by shape rib 31,32 Shape, therefore, it is possible to prevent electrolyte from leaking into adjacent ion-exchange chamber.

＜ electrodialysis plant ＞

Fig. 5 is the assembling figure of the outline side profile construction of the electrodialysis plant 10 of the filter press type representing the present invention.This electricity In electrodialysis apparatus 10, between minus plate 10a and positive plate 10b, overlapping multiple chamber frame 1 ground possessing above-mentioned allotter 9 Configuration.In illustrated example, the chamber collimation mark being arranged in desalting compartment being designated as 1A, the chamber collimation mark being arranged in enriched chamber is designated as 1B.

Between these chambers frame 1A, 1B, alternately clamping cation exchange membrane C and anion exchange membrane A.As such sun Ion exchange membrane C and anion exchange membrane A can use known material.

Space (host's body 2) in chamber frame 1A, 1B becomes above-mentioned ion-exchange chamber (desalting compartment 11 or enriched chamber 12).It is configured with anion exchange membrane A, removing at the other end between enriched chamber 12 (chamber frame 1B) and minus plate 10A at one end It is configured with cation exchange membrane C between salt room 11 (chamber frame 1A) and positive plate 10B.

Above-mentioned multiple ion exchange membrane A, C of configuring between minus plate 10A and positive plate 10B and chamber frame 1A, 1B It is firmly fixed by a pair fastening plate 13,13.

When the electrodialysis plant 10 using said structure carries out electrodialysis, process from inlet 5 inflow of chamber frame 1A Liquid (with reference to Fig. 4), and to desalting compartment 11 providing chemical liquid.Treatment fluid to desalting compartment 11 supply will be discharged to liquid outlet 6, row The treatment fluid gone out will be supplied to desalting compartment 11 once again.

It addition, in chamber frame 1B, flow into thin electrolyte from inlet 5, thus supply electrolyte to enriched chamber 12, supply Should discharge to liquid outlet 6 to the electrolyte of enriched chamber 12, be fed to next enriched chamber 12.Therefore, by minus plate 10a And while applying certain voltage between positive plate 10b, by liquid circulation-supplied to desalting compartment 11 and enriched chamber 12, thus The ion in the treatment fluid in desalting compartment 11 is made little by little to move to enriched chamber 12.So, at the electrolyte of enriched chamber 12 circulation Ion concentration increase, it is as a result, it is possible to obtain the saline solution of the high concentration as target.

As it has been described above, the electrodialysis plant 10 of present embodiment uses allotter 9, this allotter 9 has and is provided with opening The stream 900 in portion 910 and 920.So, the treatment fluid flowed into the chamber frame 1A being arranged in desalting compartment 11 obtains in described stream Flow out to suitable flow path resistance to ion-exchange chamber's (desalting compartment 11).It addition, to the chamber frame 1B being arranged in enriched chamber 12 The electrolyte flowed into flows out to ion-exchange chamber (enriched chamber 12) with also obtaining suitable flow path resistance in stream.And, Each liquid of desalting compartment 11 and enriched chamber 12 from ion-exchange chamber to liquid outlet 6 discharge time, it is suitable also to obtain in stream Flow path resistance ground is discharged.

Therefore, it is possible to make treatment fluid or electrolyte evenly and uniformly to each chamber being configured at multiple desalting compartment and enriched chamber Room frame 1 flows in and out (discharge), it is possible to stably carry out the electrodialysis equalized.

The effective liquid dispersion of ion-exchange chamber and electrodialytic precision keep direct relation, be therefore one important Key element.Therefore, the allotter 9 of the application of the invention, it is possible to improve liquid dispersion rate further, it is possible to stably obtain precision High and be effectively electrolysed.

Above, embodiments of the present invention are described in detail by accompanying drawing.Additionally, above-mentioned record is for understanding this reality Execute mode, be not used to limit the scope of present embodiment.And, above-mentioned multiple embodiments are the most mutually exclusive.Cause This, if the contradiction of occurring without, it is also possible to combine each key element of different embodiments, in the disclosed technology that technical scheme is recorded In the range of, it is possible to carry out various deformation and change.

Claims (12)

1. an electrodialysis plant, wherein, between minus plate and positive plate, make chamber frame between cation exchange membrane and cloudy from Mode multiple described cation exchange membranes alternately arranged between proton exchange and described anion exchange membrane, thus constitute concentration Room and desalting compartment,

This electrodialysis plant is characterised by,

Described chamber frame possesses the frame section of the host's body being arranged in middle position and the surrounding being positioned at this host's body,

Described frame section possesses inlet, liquid outlet and has the allotter of stream,

Between described inlet and described host's body and between described liquid outlet and described host's body, it is respectively configured There is described stream,

More than more than at the one of the one side of described stream and at the two of another side, it is respectively equipped with configuration interlaced with each other Peristome.

Electrodialysis plant the most according to claim 1, it is characterised in that

The 10%～33% of the whole length of a length of described stream of each described peristome.

Electrodialysis plant the most according to claim 1 and 2, it is characterised in that

Described stream is by a part for the described peristome by being located at one side and the described peristome being located at another side A part configures overlappingly thus is formed with breakthrough part.

Electrodialysis plant the most according to claim 3, it is characterised in that

A length of 2mm～6mm of the path direction of described breakthrough part.

5. according to the electrodialysis plant according to any one of claim 1-4, it is characterised in that

The position connected with described inlet or described liquid outlet of described stream is formed as orthogonal with the width of allotter Vertical component effect, the position being connected with described host's body of described stream is formed towards this host's body with radial inclination Rake.

6. according to the electrodialysis plant according to any one of claim 1-6, it is characterised in that

Described stream is provided with multiple in the direction of the width,

1.5 times that are spaced apart flow path width of adjacent described stream～10 times.

Electrodialysis plant the most according to claim 1 and 2, it is characterised in that

The section shape of described stream is rectangular shape or elliptical shape.

8. according to the electrodialysis plant described in claim 3 or 4, it is characterised in that

The described breakthrough part being formed at described stream is 2～8.

Electrodialysis plant the most according to claim 3, it is characterised in that

The degree of depth of described stream is the 50%～80% of allotter thickness.

10. according to the electrodialysis plant according to any one of claim 1-9, it is characterised in that

Described stream has the width of 1mm～3mm.

11. according to the electrodialysis plant according to any one of claim 1-10, it is characterised in that

It is formed with rib in the one side side of described frame section.

12. according to the electrodialysis plant according to any one of claim 1-11, it is characterised in that

Described allotter is at the allocation position of described peristome, and is the face in the side contrary with the side being provided with this peristome It is formed with wire rib.