CN109908975A - A kind of electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method - Google Patents
A kind of electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method Download PDFInfo
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Abstract
The present invention relates to a kind of devices of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, it is made of bipolar membrane electrodialysis device, receiver and ion exchange pot three parts, wherein bipolar membrane electrodialysis device is in plate-and-frame, it is by multiple groups film to forming, every group of film has partition to being made of an anode membrane, a cavity block and a Bipolar Membrane again between each film, both ends are pole plate and end plate, it is fixed with plurality of bolts, clamping becomes an entirety；Receiver is made of weak brine tank and pole water pot, diluted alkaline tank and diluted acid regeneration flow container；Ion exchange pot is H-type cation bed ion exchange pot.The present invention has been started with bipolar membrane electrodialysis device under DC electric field effect, the new process of acid solution is voluntarily made by water decomposition, outsourcing acid solution is replaced with it to regenerate the traditional handicraft of H-type cation bed, improve the regeneration level of positive resin, eliminate the storing link of acid regeneration liquid, positive resin regenerative operation is more convenient, improves level of security, environmentally friendly.
Description
Technical field
The present invention relates to the devices that inactive ion exchange resin is regenerated in ion-exchange process.
Background technique
Ion exchange technique is led in petrochemical industry, light industry, food, medicine, metallurgy, atomic energy, electric power and environmental protection etc.
Domain is related to the various aspects of national economy and people's lives, is widely used.By taking thermal power plant as an example, pot is prepared
Furnace make-up water and condensate polishing treatment, in addition to all can't do without adopting with other than various advanced physical chemistry processing and various membrane technologies
With On Water Treatment Technique By Ion-exchange Process, various ion-exchange units, such as cation bed, anion bed, mixed bed must be just used.These ions
Switching equipment is all filled with ion exchange resin, and ion exchange resin will be regenerated after equipment operation processing water fails
Operation makes inactive ion exchange resin restore ion exchanging function.Inactive ion exchange resin is carried out with chemical agent acid or alkali
Regeneration, this regeneration method is referred to as soda acid chemical regeneration method.
There is many defects for the soda acid chemical regeneration method of inactive ion exchange resin, and such as regeneration is low with soda acid utilization rate,
Spent acid lye exhaust emission environment, regenerative operation is complicated, and soda acid is by as hazardous chemical, it should be noted that safety storing, labour item
Part is also bad, and therefore, there is an urgent need to develop a kind of new methods of ion exchange resin regeneration by people.
In recent years, we are researching and developing always electric regeneration of ion exchange resin technology, open up and extend Bipolar Membrane
The electrically regenerative technology of method, it is electrically regenerative electrically regenerative to multiple bed ion exchange resin from Ion Exchange Resin In The Mixing Bed, especially H-type cation bed from
Sub-exchange resin is electrically regenerative.
H-type cation bed often forms multiple bed with OH type anion bed and carries out ion exchange desalination in addition to for chemical industry and pharmacy procedure
Processing.The principle of this ion exchange desalting processing is to be to become salt with H+The acid of ion, then use OH
Type anion bed ion exchange resin removes acid group, and H+And OH-Ions binding and the purpose for obtaining desalination.
In recent years, the technology of domestic Bipolar Membrane and the related diaphragm of preparation reaches its maturity, and is to promote to use Bipolar Membrane method ion
Exchanger resin is electrically regenerative to create advantage.
The purpose of the present invention is provide one kind in direct current for deficiency and defect existing for existing ion exchange technique
Sig water and diluted acid regenerated liquid are prepared with Bipolar Membrane method under field action, with diluted acid regenerated liquid regeneration H-type cation bed failure ion exchange
Resin realizes the purpose of electric regeneration of ion exchange resin.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind need not outsourcing acid, voluntarily relieving haperacidity, with low concentration acid regeneration
Liquid, safe ready is environmentally friendly, electrically regenerative H-type cation bed inactive ion exchange resin device.
Since traditional H-type cation bed failure cation exchange resin regeneration technology has acid regeneration liquid utilization rate low, regeneration of giving up
Liquid exhaust emission environment, regenerative operation are complicated, and acid solution is by as a kind of dangerous chemicals, it should be noted that safety storing, working condition
Also many defects such as bad.
The present invention is a kind of device of electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, it includes as follows
Part:
1. bipolar membrane electrodialysis device 3: being in plate-and-frame, it is by multiple groups film to being formed, and every group of film is to by a cavity block 8, one
It opens anode membrane 9 and a Bipolar Membrane 10 is formed, by partition between each film, both ends are electrode and end plate, it is fixed with plurality of bolts,
Compress integral, specific assembling mode is matched with a cavity block, an anode membrane and Bipolar Membrane for one group, makes left-to-right from anode
7 start, and are arranged successively, first group of cavity block 8, anode membrane 9 and Bipolar Membrane 10, then ranked second group cavity block 8, anode membrane 9 and Bipolar Membrane 10, according to
Secondary repeated arrangement each group, until right end is finally cavity block 8, anode membrane 9 and cathode 11, thus from left to right, sequentially form anode chamber,
Weak brine room, diluted alkaline regeneration liquid chamber and diluted acid room, then weak brine room, diluted alkaline regeneration liquid chamber and diluted acid room are sequentially formed, successively arrange
Each room is arranged, until right end is finally weak brine room and cathode chamber；
2. receiver: weak brine tank 1, pole water pot 2, diluted alkaline tank 4 and diluted acid regeneration flow container 5 are formed；
3. ion exchange pot: H-type cation bed ion exchange pot.
Various receivers are connected with each room of bipolar membrane electrodialysis device 3 respectively with pipeline, i.e. weak brine tank 1, pole water pot 2, dilute
The outlet at bottom of alkali tank 4 and diluted acid regeneration flow container 5, respectively by corresponding weak brine pump, pole water pump, thin acid pump and diluted alkaline regeneration
Liquid pump is connected with the weak brine room of corresponding bipolar membrane electrodialysis 3, pole water chamber, diluted alkaline room and diluted acid regeneration liquid chamber, Bipolar Membrane electricity
The outlet of each room of dialyzer is connected with corresponding receiver top entry again, 4 flow cycles is constituted, for various fluids in phase
It is circulated under the action of the various pumps answered.
H-type cation bed ion exchange pot 6 is located at the end of the present apparatus, it is connected with diluted acid regeneration flow container 5, for conveying diluted acid
Regenerated liquid regenerates the cation exchange resin of failure；6 bottom of H-type cation bed ion exchange pot sets discharge tube, and waste regeneration liquid is discharged
With cleaning waste water, utilizes or discharge after processing.
Spacing between anode 7 and cavity block 8 used in bipolar membrane electrodialysis device 3, the i.e. thickness of anode chamber, yin used
Spacing between film 8 and anode membrane 9, the i.e. thickness of weak brine room, the spacing between anode membrane 9 used and Bipolar Membrane 10, i.e. diluted alkaline
The thickness of room, the spacing between Bipolar Membrane 10 used and cavity block 8, i.e. diluted acid regenerate the thickness of liquid chamber, cavity block 8 used and yin
Spacing between pole 11, the i.e. thickness of cathode chamber ,≤10mm.
In the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, the bipolar membrane electrodialysis
Quantity≤500 pair of film pair used in device 3；Anode 7 used is the steel mesh or stephanoporate steel plate of titanium plating ruthenium material；Cathode 11 used
It is the stephanoporate steel plate of stainless steel or nickel plating.
Bipolar Membrane is that side is anode membrane and the other side is cavity block, is sandwiched between the composite membrane of catalyst layer.From microcosmic angle
It observes, the catalyst layer among Bipolar Membrane can constantly absorb water, and under DC electric field effect, make water decomposition
The resulting H of water decomposition+Cation dissociates resulting anion X with salt MX-It is combined into sour HX, the resulting anion OH of water decomposition-With
Salt MX dissociates resulting cation M+It is combined into alkali MOH.These generated soda acids are collected, it is spare.
Bipolar membrane electrodialysis device 3 occurs water decomposition reaction, reacts dilute salting liquid, generate dilute under additional power source effect
Sig water and diluted acid regenerated liquid are respectively fed to diluted alkaline flow container by pump and diluted acid regenerate flow container by lye and diluted acid regenerated liquid.?
The electrochemical reaction that cathode and anode also occur, Ying Jinliang avoid generating adverse effect to electrode.
The diluted acid regenerated liquid produced by bipolar membrane electrodialysis device 3 can be such that H-type cation bed failure cation exchange resin obtains
Regeneration；Generated sig water does it and uses.
In conventional regeneration technique, concentrated acid used in H-type cation bed ion exchange resin regeneration needs to purchase, transport and store etc.
Link, since concentrated acid is dangerous material, it is necessary to just can guarantee the safety in each storing link using special equipment.It is additionally provided with concentrated acid
Bunkerage is needed when using concentrated acid using concentrated acid measuring equipment, the concentrated acid of storage is rushed dilute, is deployed.This is that have danger
The operation of danger once has generation concentrated acid operation to lead to the case of personnel's heavy casualties.So existing concentrated acid regeneration method is to vast
The manager and user of enterprise make troubles, and there has been no new technologies to change this situation at present.
In the present invention, sig water and diluted acid regenerated liquid is directly made using Bipolar Membrane, with traditional H-type cation bed regeneration technology
It is less identical.
Caustic soda used in the present invention is needed directly to be made by bipolar membrane electrodialysis device 3 according to regeneration.Again according to resin
Life degree requires difference, and concentrated acid concentration is also different, and this, simplifies resin regeneration techniques.The quality percentage of concentrated acid obtained
Concentration highest only has 5%, considerably increases safety.
With bipolar membrane electrodialysis device 3 under electric field action, acid solution is voluntarily made by water decomposition, instead of outsourcing concentrated acid in the present invention
The traditional handicraft of H-type cation bed is regenerated, the regeneration level of H-type cation bed cation exchanger resin is improved, eliminates regeneration acid solution
Storing link, cation exchange resin regenerative operation is more convenient, improves level of security, environmentally friendly.
Advantages of the present invention:
1) need not outsourcing acid, without storing, used while producing with station service voluntarily by salt water relieving haperacidity.
2) the low-concentration alkali liquor safe ready with mass percentage concentration less than 5%, worker's working condition make moderate progress.
3) energy-saving and emission-reduction, ion exchange resin regeneration expense decrease.
4) operate simplified, equipment handover charge is conducive to popularization with low；
5) area of the product of the present invention especially suitable for the soda acids supply bottleneck such as borderland and west area；
6) it is used especially suitable for thermal power plant or nuclear power plant, is particularly suitable for use when old factory's energy-saving and emission-reduction technological transformation.
The present invention is particularly suitable for using current advanced Bipolar membrane water splitting to improve traditional H-type cation bed regeneration technology
It is used in thermal power plant.
Detailed description of the invention
The appearance signal of the electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method when Fig. 1 is co-current regeneration
Figure.
Fig. 2 is the electrically regenerative H-type cation bed failure cation exchange resin bipolar membrane electrodialysis device schematic diagram of Bipolar Membrane method.
The appearance signal of the electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method when Fig. 3 is counter-current regeneration
Figure.
In figure, 1- weak brine tank；The pole 2- water pot；3- bipolar membrane electrodialysis device；4- diluted alkaline tank；5- diluted acid regenerates flow container；6-H
Type cation bed ion exchange pot；7- anode；8- cavity block；9- anode membrane；10- Bipolar Membrane: 11- cathode
Specific embodiment
With reference to the accompanying drawing, a specific embodiment of the invention is described:
Embodiment 1
The appearance signal of the electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method when Fig. 1 is co-current regeneration
Figure.
A kind of device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, it includes following part:
1. bipolar membrane electrodialysis device 3: being in plate-and-frame, it is by multiple groups film to being formed, and every group of film is to by a cavity block 8, one
It opens anode membrane 9 and a Bipolar Membrane 10 is formed, by partition between each film, both ends are electrode and end plate, it is fixed with plurality of bolts,
Compress integral, specific assembling mode is matched with a cavity block, an anode membrane and Bipolar Membrane for one group, makes left-to-right from anode
7 start, and are arranged successively, first group of cavity block 8, anode membrane 9 and Bipolar Membrane 10, then ranked second group cavity block 8, anode membrane 9 and Bipolar Membrane 10, according to
Secondary repeated arrangement each group, until right end is finally cavity block 8, anode membrane 9 and cathode 11, thus from left to right, sequentially form anode chamber,
Weak brine room, diluted alkaline room and diluted acid regenerate liquid chamber, then sequentially form weak brine room, diluted alkaline regeneration liquid chamber and diluted acid regeneration liquid chamber,
It is arranged successively each room, until right end is finally weak brine room and cathode chamber；
2. receiver: weak brine tank 1, pole water pot 2, diluted alkaline tank 4 and diluted acid regeneration flow container 5 are formed；
3. ion exchange pot: H-type cation bed ion exchange pot.
Various receivers are connected with each room of bipolar membrane electrodialysis device 3 respectively with pipeline, i.e. weak brine tank 1, pole water pot 2, dilute
The outlet at bottom of alkali tank 4 and diluted acid regeneration flow container 5, respectively by corresponding weak brine pump, pole water pump, thin acid pump and diluted alkaline regeneration
Liquid pump is connected with the weak brine room of corresponding bipolar membrane electrodialysis 3, pole water chamber, diluted alkaline room and diluted acid regeneration liquid chamber, Bipolar Membrane electricity
The outlet of each room of dialyzer is connected with corresponding receiver top entry again, 4 flow cycles is constituted, for various fluids in phase
It is circulated under the action of the various pumps answered.
H-type cation bed ion exchange pot 6 is located at the end of the present apparatus, it is connected with diluted acid regeneration flow container 5, for conveying diluted acid
Regenerated liquid regenerates the cation exchange resin of failure；6 bottom of H-type cation bed ion exchange pot sets discharge tube, and waste regeneration liquid is discharged
With cleaning waste water, utilizes or discharge after processing.
Spacing between anode 7 and cavity block 8 used in bipolar membrane electrodialysis device 3, the i.e. thickness of anode chamber, yin used
Spacing between film 8 and anode membrane 9, the i.e. thickness of weak brine room, the spacing between anode membrane 9 used and Bipolar Membrane 10, i.e. diluted alkaline
The thickness of room, the spacing between Bipolar Membrane 10 used and cavity block 8, i.e. diluted acid regenerate the thickness of liquid chamber, cavity block 8 used and yin
Spacing between pole 11, the i.e. thickness of cathode chamber ,≤10mm.
In the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, the bipolar membrane electrodialysis
Quantity≤500 pair of film pair used in device 3；Anode 7 used is the steel mesh or stephanoporate steel plate of titanium plating ruthenium material；Cathode 11 used
It is the stephanoporate steel plate of stainless steel or nickel plating.
Co-current regeneration refers to that the flow direction of the regenerated liquid in H-type cation bed ion exchange pot is intended to treatment fluid with when running from top to bottom
The flow direction of body is identical from top to bottom, i.e., two kinds of flow directions are in fair current.
Embodiment 2
The appearance signal of the electrically regenerative H-type cation bed failure cation exchange resin device of Bipolar Membrane method when Fig. 3 is counter-current regeneration
Figure.
It is big when the method and co-current regeneration of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method when counter-current regeneration
It causes identical.
Counter-current regeneration refers to that the flow direction of the regenerated liquid in H-type cation bed ion exchange pot is intended to treatment fluid with when running from bottom to top
The flow direction of body is from top to bottom on the contrary, i.e. two kinds of flow directions are in adverse current.
Claims (5)
1. a kind of device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method, it includes following part, feature
It is:
1. bipolar membrane electrodialysis device (3): being in plate-and-frame, it is by multiple groups film to being formed, and every group of film is to by cavity block (8), one
It opens anode membrane (9) and a Bipolar Membrane (10) is formed, by partition between each film, both ends are electrode and end plate, use plurality of bolts
Fixed, compression is integral, and specific assembling mode is matched with a cavity block, an anode membrane and a Bipolar Membrane for one group, makes left-to-right
It since anode (7), is arranged successively, first group of cavity block (8), anode membrane (9) and Bipolar Membrane (10), then ranked second a group cavity block (8), sun
Film (9) and Bipolar Membrane (10), are repeated in arrangement each group, until right end is finally cavity block (8), anode membrane (9) and cathode (11), from
And from left to right, anode chamber, weak brine room, diluted alkaline room and diluted acid regeneration liquid chamber are sequentially formed, then sequentially form weak brine room, dilute
Alkaline chamber and diluted acid regenerate liquid chamber, are arranged successively each room, until right end is finally weak brine room and cathode chamber；
2. receiver: weak brine tank (1), pole water pot (2), diluted alkaline tank (4) and diluted acid regeneration flow container (5) are formed；
3. ion exchange pot: H-type cation bed ion exchange pot (6)；
Various receivers are connected with bipolar membrane electrodialysis device (3) each room respectively with pipeline, i.e., weak brine tank (1), pole water pot (2),
The outlet at bottom of diluted alkaline tank (4) and diluted acid regeneration flow container (5) passes through corresponding weak brine pump respectively, pole water pump, diluted alkaline pump and dilute
Acid regeneration liquid pump is connected with corresponding bipolar membrane electrodialysis (3) weak brine room, pole water chamber, diluted alkaline room and diluted acid regeneration liquid chamber, double
The outlet of pole each room of membrane electrodialysis device is connected with corresponding receiver top entry again, 4 flow cycles is constituted, for various streams
Body circulates under the action of corresponding various pumps；
H-type cation bed ion exchange pot (6) is located at the end of the present apparatus, it is connected with diluted acid regeneration flow container (5), for conveying diluted acid
Regenerated liquid regenerates the cation exchange resin of failure；H-type cation bed ion exchange pot (6) bottom sets discharge tube, and useless regeneration is discharged
Liquid and cleaning waste water, utilize after processing or discharge.
2. the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method according to claim 1, feature
It is: the spacing used in the bipolar membrane electrodialysis device (3) between anode (7) and cavity block (8), the i.e. thickness of anode chamber, institute
With the spacing between cavity block (8) and anode membrane (9), the i.e. thickness of weak brine room, between anode membrane (9) used and Bipolar Membrane (10) between
Away from that is, the thickness of diluted alkaline room, the thickness of the spacing between Bipolar Membrane (10) used and cavity block (8), i.e. diluted acid regeneration liquid chamber are used
Spacing between cavity block (8) and cathode (11), the i.e. thickness of cathode chamber ,≤10mm.
3. the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method according to claim 1, feature
It is: quantity≤500 pair of film pair used in the bipolar membrane electrodialysis device (3).
4. the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method according to claim 1, feature
Be: anode (7) used in the bipolar membrane electrodialysis device (3) is the net or porous plate of titanium plating ruthenium material.
5. the device of the electrically regenerative H-type cation bed failure cation exchange resin of Bipolar Membrane method according to claim 1, feature
Be: cathode (11) used in the bipolar membrane electrodialysis device (3) is the porous plate of stainless steel or nickel plating material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114014415A (en) * | 2021-10-27 | 2022-02-08 | 杨晓刚 | Continuous regeneration deionization cation exchanger and anion exchanger system by using direct-current power supply |
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| CN114014415A (en) * | 2021-10-27 | 2022-02-08 | 杨晓刚 | Continuous regeneration deionization cation exchanger and anion exchanger system by using direct-current power supply |
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Application publication date: 20190621 |