CN201722180U - Electric regeneration device of failure ion exchange resin - Google Patents

Electric regeneration device of failure ion exchange resin Download PDF

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Publication number
CN201722180U
CN201722180U CN2010202418885U CN201020241888U CN201722180U CN 201722180 U CN201722180 U CN 201722180U CN 2010202418885 U CN2010202418885 U CN 2010202418885U CN 201020241888 U CN201020241888 U CN 201020241888U CN 201722180 U CN201722180 U CN 201722180U
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CN
China
Prior art keywords
resin
dividing plate
ion exchange
membrane
regeneration
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Expired - Fee Related
Application number
CN2010202418885U
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Chinese (zh)
Inventor
周志军
王斌斌
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN2010202418885U priority Critical patent/CN201722180U/en
Application granted granted Critical
Publication of CN201722180U publication Critical patent/CN201722180U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a plate-and-frame failure ion exchange resin electric regeneration device for reverse current operation, which comprises a membrane stack, electrode devices and a clamping device. The membrane stack comprises a plurality of membrane pairs; each membrane pair comprises a cation exchange membrane, a resin regeneration room partition board, an anion exchange membrane and a concentrate cell partition board; and both sides of the membrane stack are provided with the electrode devices, and the clamping device is arranged outside for clamping the membrane stack and the electrode devices so as to form the plate-and-frame ion exchange resin electric regeneration device. In the device, the water flow of a resin regeneration room and a concentrate cell adopt a reverse current operation method and can work stably for a long time, and the resin regeneration effect is good; and simultaneously, the device does not consume any acid and alkali chemical when working, does not discharge waste liquid and waste water, only consumes a small amount of electricity, has low energy consumption, is simple to operate and convenient to use, and can be widely applied to the failure regeneration of various mixed bed resin, polished resin, softened resin, and anion and cation resin.

Description

A kind of electric regenerating unit of the ion exchange resin that lost efficacy
Technical field
The utility model relates to the regeneration of ion-exchange resin field, the electric regenerating unit of inefficacy ion exchange resin during the ultrapure water that relates in particular to a kind of counter-current operation is made.
Background technology
Ultrapure water is as high-quality production technique water, the supporting water of production unit (high-duty boiler) and analyze experimental water, be used for industrial sectors such as pharmacy, biology, chemical industry, electronics, electric power in a large number, and social development field such as university, hospital, scientific research institutions, biotech company, all kinds of inspection centers.Ultrapure water is widely used in assay laboratory, biochemical industry, microelectronics industry, semi-conductor industry, power generation industries, pharmaceutical industry and hospital.The external electricity regeneration of ion exchange resin is that the friendly process of existing ion-exchange water treatment is changed, and is very suitable for many modernizing and expanding the existing factory and the recycling of traditional disposable polishing resin.
At present, the main flow technology of preparation ultrapure water is " reverse osmosis and mixed bed ion exchange deep desalting " integrated technique, and the mixed bed ion exchange column all needs the using and the reserved, so that the mixed-bed resin that has enough time regeneration to lose efficacy because of ionic adsorption is saturated.Regenerative process is: earlier with the mixed bed ion exchange resin backwash of pure water to losing efficacy, allow positive resin in the mixed-bed resin and negative resin because of the difference of specific gravity layering; Then use acid regeneration sun resin respectively, with the alkali negative resin of regenerating; Afterwards, respectively with the clean positive and negative resin of pure water rinsing, again with pure water with two kinds of mixed with resin; Also need just to wash (stream from top to bottom) mixed-bed resin at last and could progressively reach 5~18M Ω cm water quality requirement more than 3 to 10 hours with a large amount of pure water.Therefore, the production process of traditional process equipment is discontinuous, and its ultrapure water water quality instability, acid or alkali environment pollute and equipment corrosion serious (because of concentrated hydrochloric acid volatilization and caustic corrosion), chemical (SILVER REAGENT) and the outstanding inherent defect of water resources (pure water) waste can't be avoided.For not having the professional and, using traditional process equipment very inconvenient than the user of ambassador with the place.
Electrodeionization EDI (abbreviation of Electrodeionization) is the deep desalting novel process with electrodialysis and ion exchange technique combination, it is the zwitterion that utilizes in the mixture iron exchange resin absorption feedwater, these ions that are adsorbed under the effect of volts DS, see through anion and cation exchange membrane and removed process respectively again simultaneously.This process intermediate ion exchange resin continuous regenerated that is electrically connected.Because film is added with voltage to both sides, water molecules is that hydrogen ion and hydroxide ion remove regenerating resin by electrolysis, simultaneously, by the ion under the exchange of hydrogen ion and hydroxide ion under the effect of electric current, quilt is moved to dense hydroecium and is discharged, thereby realizes the purpose that cyclic regeneration is used continuously.Therefore do not need to use bronsted lowry acids and bases bronsted lowry regeneration mixed-bed resin, production process and clean environment, conserve water resource and chemical.This new technology can replace traditional ion-exchange (DI) device, produces the high-quality ultrapure water of 10~18M Ω cm.
The deionized ultimate principle of EDI process mainly comprises three aspects of electricity regeneration of ionic selective migration and resin under ion-exchange, the DC electric field.When feed water flow during through the resin regeneration chamber, ion in the water on foreign ion and the resin exchanges, be adsorbed on the resin particle, because each resin particle and other resin particle are close to, make the foreign ion in the resin regeneration chamber can under electric field action, move to the film surface, and see through film and enter dense hydroecium, thereby reach the purpose of removing foreign ion.The H of water decomposition generation meanwhile +And OH -Exchange with the ion of exhausted resin, making resin regeneration is H type and OH type.
Application number is the electric regenerating unit that 96120791.4 Chinese utility model patent discloses a kind of ion exchange resin, employing be sped structure.
China utility model patent ZL200420009028.3 discloses the electric regenerated device in a kind of multiple bed ion exchange resin inefficacy back, embrane method water treatment and ion exchange phase bonded technology have been adopted, in constituting, add Bipolar Membrane at film, be provided with simultaneous negative resin regeneration room, positive resin regeneration chamber in the regenerating unit.
The said apparatus complex structure, it is convenient inadequately to manipulate.
Summary of the invention
The utility model provides a kind of electric regeneration of ion exchange resin device of counter-current operation, and is simple in structure, and the process resin regeneration effect is obvious.
A kind of electric regeneration of ion exchange resin device, comprise membrane stack, electrode device and gripping unit, to forming, every group of film is to comprising the following assembly that is arranged in order by some groups of films for described membrane stack: be filled with inside stuffing dense hydroecium dividing plate, anion-exchange membrane, be filled with the resin regeneration chamber dividing plate and the cationic exchange membrane of exhausted resin; The top of dense hydroecium dividing plate is provided with dense hydroecium posticum, and the bottom is provided with dense hydroecium prosopyle; The top of resin regeneration chamber dividing plate is provided with the resin inlet and the fixing bolt hole of usefulness, and usable resins inlet seal plug is sealed; The resin inlet sealing plug is provided with the prosopyle, resin regeneration chamber and the fixing bolt hole of usefulness of band filtering net; The bottom of resin regeneration chamber dividing plate is provided with resin regeneration chamber posticum; Dense hydroecium dividing plate is the plate and frame structure, anion-exchange membrane, the cationic exchange membrane of this inside configuration space and dense hydroecium dividing plate both sides constitute dense hydroecium, resin regeneration chamber dividing plate also is the plate and frame structure, the anion-exchange membrane of its internal space and both sides, cationic exchange membrane constitute resin regeneration chamber, i.e. freshwater room.Several films are to forming membrane stack, and the outermost cationic exchange membrane of membrane stack is provided with dense hydroecium dividing plate outward.The dense hydroecium dividing plate of membrane stack both sides can be called positive electrode chamber dividing plate and negative potential chamber dividing plate again; Electrode device comprises positive electrode and negative potential, is separately positioned on positive electrode chamber dividing plate and the negative potential chamber dividing plate outside; The outside, electrode device two ends is provided with gripping unit, comprises left clamping piece and right clamping piece.Electrode vessel dividing plate internal space constitutes utmost point hydroecium; The Inlet and outlet water two ends of dense hydroecium, freshwater room, utmost point hydroecium all are respectively equipped with the conventional even water distributor that requires.
Described exhausted resin is a kind of in mixed-bed resin, positive resin or the negative resin
Described inside stuffing is plastics water conservancy diversion net or ion exchange resin, to reduce membrane stack resistance.
The thickness of described resin regeneration chamber dividing plate is 10-100mm.
The thickness of described dense hydroecium dividing plate, positive electrode chamber dividing plate and negative potential chamber dividing plate is 2-10mm.
The material of described resin regeneration chamber dividing plate and dense hydroecium dividing plate is plastics.
Water (flow) direction in described resin regeneration chamber and the dense hydroecium is opposite, and the part or all of pump around circuit of the indoor current of resin regeneration, can the conserve water resource with avoid fouling.
When using the electric regeneration of ion exchange resin device of the utility model counter-current operation, the ion exchange resin that the lost efficacy resin inlet place by resin regeneration chamber dividing plate can be inserted in the resin regeneration chamber, or the ion exchange resin that lost efficacy is linked to each other with the resin inlet place of regeneration room dividing plate with pipeline, exhausted resin is pumped in the resin regeneration chamber one or more times by the waterpower conveying with pure water, the resinous electricity regeneration room is filled up, with bolt the resin inlet sealing plug is fixed then, sealed resin inlet.Give the energising of resinous electricity regenerating unit then, after the energising, the water of the minute quantity in the resin regeneration chamber is at ion-exchange membrane and resin surface generation water decomposition, and ionization goes out the H of sufficient amount +And OH -, in resin surrounding edge interlayer,, salt type resin is converted to H type and OH type, thereby resin is regenerated with exhausted resin generation regenerative response.And submit the electrolyte ion of changing from exhausted resin, under the effect of extra electric field, enter in the dense hydroecium through the migration of yin, yang film respectively and discharge.Therefore, the regenerative response in the anion and cation exchange resin of the indoor generation of resin regeneration only is the regenerative response that generally takes place with the acid-alkali regeneration resin.As seen, H in reaction this moment +And OH -, do not come in the chemical agent soda acid, but come in common water.This regenerative response only carries out in the resin regeneration chamber, and it is not an electrode reaction, and only is common acid-alkali regeneration reaction, and regenerative response has also just consumed electric energy.
The current of resin regeneration chamber and dense hydroecium, utmost point hydroecium adopt counter-current operation, this counter-current operation can alleviate on the one hand because the current of resin regeneration chamber and dense hydroecium, utmost point hydroecium walk abreast the concentration polarization phenomenon in the exit of the resin regeneration chamber that causes and dense hydroecium, utmost point hydroecium, prevent that exit, resin regeneration chamber resin lost efficacy once more, also can alleviate the Ca of the cavity block side generation of dense hydroecium exit end on the other hand 2+, Mg 2+With OH -Stop up in conjunction with generating precipitation film may, so the electric regeneration of ion exchange resin device of counter-current operation can steady in a long-term move, resin regeneration is effective.
The electric regeneration of ion exchange resin device of the utility model counter-current operation except that this advantage of favorable regeneration effect is arranged, moves not consumption acids alkalization in addition and learns medicament, does not have waste liquid and discharge of wastewater, only consumes small amount of electrical energy, and energy consumption is low, and is simple to operate, easy to use.
Description of drawings
Fig. 1 is the utility model device intermediate ion exchange resin electricity regenerative process synoptic diagram.
Fig. 2 is the diagrammatic cross-section of the utility model device.
Fig. 3 is the part-structure synoptic diagram of the utility model device.
Respectively marking mark among the figure is described as follows:
1 left clamping piece 2 positive electrodes
3 positive electrode chamber dividing plates, 4 inside stuffings
5 anion-exchange membranes, 6 resin regeneration chamber dividing plates
7 cationic exchange membranes, 8 dense hydroecium dividing plates
9 exhausted resins, 10 negative potential chamber dividing plates
11 negative potentials, 12 right clamping pieces
13 films are to 14 bolts
15 resin regeneration chamber resin inlets, 16 resin inlet sealing plugs
Prosopyle, resin regeneration chamber 17 18 resin regeneration chamber posticums
19 dense hydroecium prosopyles, 20 dense hydroecium posticums
21 positive electrode chamber prosopyles, 22 positive electrode chamber posticums
Prosopyle, negative potential chamber 23 24 negative potential chamber posticums
25 bolts hole
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As Fig. 2, shown in Figure 3, a kind of electric regeneration of ion exchange resin device of counter-current operation mainly comprises membrane stack, electrode device and gripping unit.
Membrane stack is made up of 13 some groups of films, every group of film comprises the following assembly that is arranged in order to 13: dense hydroecium dividing plate 8, anion-exchange membrane 5, resin regeneration chamber dividing plate 6 and cationic exchange membrane 7, dense hydroecium dividing plate 8 is the plate and frame structure, the anion-exchange membrane 5 of its internal space and both sides, cationic exchange membrane 7 constitute dense hydroecium, are filled with plastics water conservancy diversion net in the dense hydroecium; Resin regeneration chamber dividing plate 6 also is the plate and frame structure, and the anion-exchange membrane 5 of its internal space and both sides, cationic exchange membrane 7 constitutes the resin regeneration chambers, i.e. freshwater room, and its inside is filled with mixed-bed resin; The top of dense hydroecium dividing plate 8 is provided with dense hydroecium posticum 20, and the bottom is provided with dense hydroecium prosopyle 19; The top of resin regeneration chamber dividing plate 6 is provided with the fixedly bolt hole 26 of usefulness of resin inlet 15 and two, and usable resins inlet seal plug 16 is sealed; Resin inlet sealing plug 16 is provided with the bolt hole 25 that the band prosopyle, resin regeneration chamber 17 of filtering net and two match with bolt hole 26 on the resin regeneration chamber dividing plate 6; The bottom of resin regeneration chamber dividing plate 6 is provided with resin regeneration chamber posticum 18, and the paddle hole position of dense hydroecium dividing plate 8 and resin regeneration chamber dividing plate 6 is provided with on the contrary, makes the current of dense hydroecium and freshwater room form adverse current.
The thickness of resin regeneration chamber dividing plate 6 is 10mm, and the thickness of dense hydroecium dividing plate 8 is 5mm.
Some groups of films are to being combined into a membrane stack, and film is to being provided with dense hydroecium dividing plate outside the outermost cationic exchange membrane 7.Because the outermost two dense hydroecium dividing plates 8 of membrane stack are adjacent with negative potential 11 with positive electrode 2 respectively, so these two dense hydroecium dividing plates can be called positive electrode chamber dividing plate 3 and negative potential chamber dividing plate 10 again, positive electrode chamber dividing plate 3 and negative potential chamber dividing plate 10 are plate and frame, and its internal space constitutes utmost point hydroecium.The positive electrode 2 and negative potential 11 outsides are provided with left clamping piece 1 and right clamping piece 10 respectively, two clamping pieces are provided with bolt hole, erection bolt 14 on the bolt hole, membrane stack, electrode device and gripping unit are linked to be the electric regeneration of ion exchange resin device of counter-current operation with nut.
The Inlet and outlet water two ends of dense hydroecium, freshwater room, utmost point hydroecium all can be provided with the conventional even water distributor that requires (not drawing among the figure).
When using the electric regeneration of ion exchange resin device of the utility model counter-current operation, the ion exchange resin that lost efficacy can be inserted in the resin regeneration chamber by resin inlet 15, or the ion exchange resin that lost efficacy is linked to each other with resin inlet 15 with pipeline, exhausted resin is pumped in the resin regeneration chamber one or more times by the waterpower conveying with pure water, the resin regeneration chamber is filled up, with bolt resin inlet sealing plug 16 is fixed on the resin regeneration chamber dividing plate 6 then, seals resin inlet 15.Give the energising of resinous electricity regenerating unit then, after the energising, the water of the minute quantity in the resin regeneration chamber is at ion-exchange membrane and resin surface generation water decomposition, and ionization goes out the H of sufficient amount +And OH -, in resin surrounding edge interlayer,, salt type resin is converted to H type and OH type, thereby resin is regenerated with exhausted resin generation regenerative response.And submit the electrolyte ion of changing from exhausted resin, under the effect of extra electric field, enter in the dense hydroecium through the migration of yin, yang film respectively and discharge.Therefore, the regenerative response in the anion and cation exchange resin of the indoor generation of resin regeneration only is the regenerative response that generally takes place with the acid-alkali regeneration resin.As seen, H in reaction this moment +And OH -, do not come in the chemical agent soda acid, but come in common water.This regenerative response only carries out in the resin regeneration chamber, and it is not an electrode reaction, and only is common acid-alkali regeneration reaction, and regenerative response has also just consumed electric energy.
Current in resin regeneration chamber and the dense hydroecium adopt counter-current operation: the current in the resin regeneration chamber enter from the prosopyle 17 on the resin inlet sealing plug 16, flow out from resin regeneration chamber dividing plate 6 posticums 18 again; And the current in the dense hydroecium enter from dense hydroecium prosopyle 19, flow out from dense hydroecium posticum 20; Water (flow) direction in resin regeneration chamber and the dense hydroecium is opposite, forms adverse current.The counter-current operation of device both can alleviate the concentration polarization phenomenon owing to the exit of the parallel resin regeneration chamber that causes of current of resin regeneration chamber and dense hydroecium and dense hydroecium, prevent that exit, resin regeneration chamber resin lost efficacy once more, also can alleviate the Ca of the cavity block side generation of dense hydroecium exit end again 2+, Mg 2+With OH -Stop up in conjunction with generating precipitation film may, so the electric regeneration of ion exchange resin device of counter-current operation can steady in a long-term move, resin regeneration is effective.
Film in parallel is many more to 13, and the quantity of the renewable inefficacy ion exchange resin of electric regeneration of ion exchange resin device of counter-current operation is just big more.

Claims (7)

1. the electric regenerating unit of the ion exchange resin that lost efficacy, comprise membrane stack, electrode device and gripping unit, it is characterized in that: described membrane stack is made up of (13) some groups of films, every group of film is arranged in order and formed by the dense hydroecium dividing plate (8) that is filled with inside stuffing (4), anion-exchange membrane (5), the resin regeneration chamber dividing plate (6) that is filled with exhausted resin (9), cationic exchange membrane (7) (13), the outer dense hydroecium dividing plate (8) that is filled with inside stuffing (4) that is provided with of the outermost cationic exchange membrane of membrane stack (7); The top of dense hydroecium dividing plate (8) is provided with dense hydroecium posticum (20), and the bottom is provided with dense hydroecium prosopyle (19); The top of resin regeneration chamber dividing plate (6) is provided with resin inlet (15); The bottom is provided with resin regeneration chamber posticum (18); The membrane stack both sides are provided with electrode device, and the electrode device outside is provided with gripping unit.
2. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: resin inlet (15) is provided with resin inlet sealing plug (16); Resin inlet sealing plug (16) is provided with the prosopyle, resin regeneration chamber (17) and the bolt hole (25) of band filtering net.
3. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: described inside stuffing (4) is plastics water conservancy diversion net or ion exchange resin.
4. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: described exhausted resin (9) is mixed-bed resin, positive resin or negative resin.
5. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: the thickness of described resin regeneration chamber dividing plate (6) is 10-100mm.
6. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: the thickness of described dense hydroecium dividing plate (8) is 2-10mm.
7. the electric regenerating unit of inefficacy ion exchange resin according to claim 1 is characterized in that: the material of described resin regeneration chamber dividing plate (6) and dense hydroecium dividing plate (8) is plastics.
CN2010202418885U 2010-06-28 2010-06-28 Electric regeneration device of failure ion exchange resin Expired - Fee Related CN201722180U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202418885U CN201722180U (en) 2010-06-28 2010-06-28 Electric regeneration device of failure ion exchange resin

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Application Number Priority Date Filing Date Title
CN2010202418885U CN201722180U (en) 2010-06-28 2010-06-28 Electric regeneration device of failure ion exchange resin

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880074A (en) * 2010-06-28 2010-11-10 浙江大学 Electric regenerating device for inactive ion exchange resin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101880074A (en) * 2010-06-28 2010-11-10 浙江大学 Electric regenerating device for inactive ion exchange resin

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110126

Termination date: 20130628