CN2589488Y - Exterior natural circulation multi-pole type ionic membrane electrolyzer - Google Patents
Exterior natural circulation multi-pole type ionic membrane electrolyzer Download PDFInfo
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- CN2589488Y CN2589488Y CN 02294633 CN02294633U CN2589488Y CN 2589488 Y CN2589488 Y CN 2589488Y CN 02294633 CN02294633 CN 02294633 CN 02294633 U CN02294633 U CN 02294633U CN 2589488 Y CN2589488 Y CN 2589488Y
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Abstract
The utility model relates to an electrolyzer in the chlorine-alkali industry, particularly a natural circulation multi-pole type ionic membrane electrolyzer. The utility model is mainly composed of unit electrolytic baths, an ionic membrane and an exterior circulation element, wherein, a plurality of unit electrolytic baths supply the electricity in series and form a main body of the electrolyzer, and the adjacent unit electrolytic baths are divided by the ionic membrane. The exterior circulation element is composed of a medium lead-in and a medium lead-out tubes of a cathode and an anode, gas-liquid separators and circulation main pipes, wherein, the gas-liquid separators are positioned on the upper part of the electrolyzer and are communicated with the circulation main pipes, and the lower ends of the gas-liquid separators are respectively provided with a discharge tube of output objects. The gas-liquid separators of the cathode and the anode are respectively communicated with the outlet connecting tubes of a cathode chamber and an anode chamber of every unit electrolytic bath by the gas-liquid lead-out tubes of the cathode and the anode. The liquid dispensing tubes of the lower part of the circulation main pipe are respectively communicated with the inlet connecting tubes of the cathode chamber and the anode chamber of every unit electrolytic bath by the liquid lead-in tubes of the cathode and the anode, and the circulation main pipe is provided with a liquid replenishing mouth. The utility model has the advantages of reasonable structure, ideal indoor circulation condition of the electrolytic reaction and stable operation and can be used in the chlorine-alkali industry.
Description
Technical field
The utility model relates to a kind of ion-membrane electrolysis device of natural recirculating type, belongs to the electrolyzer field in the chlorine industry in the chemical industry.
Background technology
At present, at chlorine industry intermediate ion membrane electrolyser with its production efficiency height, good product quality and more and more be subjected to user's favor.Yet there are shortcomings such as pressure height, pressure reduction are big, operation complex process in the ion-membrane electrolysis device of existing pump circulation, is just progressively replaced by natural circulation mode.Existing dipolar type natural circulation ionic membrane electrolysis device is mainly inner natural circulation mode, its mode of operation is that stock media is directly injected the electrolytic reaction chamber by certain flow velocity and flow, variation and difference by electrolytic reaction chamber portion temperature, concentration, proportion etc., and the gaslift effect of gas when generating, the flow-guiding structure of electrolytic reaction chamber portion makes every effort to reach the equilibrium of electrolytic reaction chamber concentration of medium and gas-liquid distribution in addition.The ion-membrane electrolysis device that can find out the inner natural recirculating type of multipole type thus is difficult to reach the perfection of indoor design to the science of internal structure design and having relatively high expectations of reasonableness and workflow.Must could progressively reach comparatively ideal structure design by a large amount of test run(s)s and scientific analysis, need constantly further perfect.
And the ion-membrane electrolysis device of outside natural circulation can obtain stable operating performance.But present outside natural circulation ionic membrane electrolysis device mainly is the single-pole ion-membrane electrolysis device with the combination of electrolysis cells parallel operation, satisfy the uniform prerequisite of electric current, need with more precious metal material, manufacturing cost height, complex structure, floor space is big.
No matter above-mentioned is the multipole type or the acyclic type electrolyzer of which kind of Recycle design, all has defectives such as being unfavorable for steady running in the concrete structure design.In addition, in overall design, often ignore preventing the reasonable consideration of galvanic corrosion measure.
Summary of the invention
The purpose of this utility model is a kind of outside natural circulation complex pole type ion-membrane electrolytic device of design, it is rational in infrastructure, make electrolytic reaction chamber in stable condition in the operational process, good reliability, gas-liquid distribution and distribution of current are even, differences such as temperature, concentration and pressure are little, in the work-ing life that can improve the operating performance and the ionic membrane of device, reduce cost.
The designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model mainly is made up of unit electrolytic bath and ionic membrane and outer loop member, unit electrolytic bath constitutes one by the cathode and anode electrolytic reaction chamber of configuration back-to-back, be provided with cathode and anode in cathode and anode electrolytic reaction chamber near the ionic membrane position, cathode and anode is separately fixed at the cathode and anode electrolytic reaction chamber by the conductive supporting gusset; A plurality of unit electrolytic bath series-feds are combined into the electrolyzer main body, adjacent unit electrolytic bath is separated by ionic membrane, the outer loop member by with the moon of the corresponding setting of each unit electrolytic bath, anolyte ingress pipe and the moon, anode gas-liquid delivery line, cloudy, the anode gas-liquid separator, cloudy, the anode separating tube, cloudy, anode circulation house steward forms, cloudy, the anode gas-liquid separator is positioned at the top of electrolyzer main body or outer loop member, with the moon, anode circulation house steward is corresponding to be communicated with, cloudy, anode gas-liquid separator lower end also is respectively arranged with the output object delivery pipe, each unit electrolytic bath the moon, the corresponding the moon of anolyte compartment's downstream end, anode gas-liquid delivery line is with cloudy, the anode gas-liquid separator is communicated with, the moon, the anolyte ingress pipe is respectively with the moon, the moon of anode circulation house steward bottom, the moon of anode separating tube and each unit electrolytic bath, the inlet connection of anode electrolysis reaction chamber is communicated with.On cathode and anode circulation house steward, also have the benefit implementation of port.
The top of the cathode and anode electrolytic reaction chamber of the unit electrolytic bath in the utility model has effuser respectively, and the effuser top has downstream end, and the porose or passage in effuser bottom communicates with the electrolytic reaction chamber.
The bottom of the cathode and anode electrolytic reaction chamber of the unit electrolytic bath in the utility model is equipped with the liquid discrete part, is distributed with the liquid dispersion hole on the liquid discrete part.
The liquid discrete part of the unit electrolytic bath in the utility model can be the frame of bottom, cathode and anode electrolytic reaction chamber or is arranged on the liquid dispersion baffle plate of cathode and anode electrolytic reaction chamber bottom.
For reducing noble metal dosage, reduce cost, the lower frame of the unit electrolytic bath in the utility model is fixedly formed by different metallic substance assembly units, and its anode seal face is the precious metal material of anti-crevice corrosion.
For reducing noble metal dosage, reduce cost, the upper side frame of the unit electrolytic bath in the utility model is that the metal assembly unit of unlike material fixedly forms, its anode seal face is the precious metal material of anti-crevice corrosion.
The side frame of the unit electrolytic bath in the utility model is a rectangular tubular, and the trim of a side of anode electrolysis reaction chamber is that the noble metal plate face and the side frame of anti-crevice corrosion fixed, to prevent crevice corrosion.
For preventing the galvanic corrosion in this device, the connection nose end in the utility model is provided with sacrificial electrode.
For reducing the galvanic corrosion that spuious leakage current causes, cathode and anode liquid ingress pipe between cathode and anode electrolytic reaction chamber and the outer loop member and cathode and anode gas-liquid delivery line adopt corrosion resistant nonmetal pipe connecting.
Be effectively to eliminate the harm of galvanic corrosion, series-fed be combined in whole unit electrolytic baths of this device zero-potential point is set, with outer loop member equi-potential.
The designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model is when using, after the energising operation, electrolytic reaction chamber produces a large amount of gas, it is up to drive liquid when gas rises, form " gaslift " effect, make reactant have bigger power, the cathode and anode gas-liquid delivery line that connects by corresponding configuration from top, electrolytic reaction chamber with higher speed is sprayed and spoiled over and is entered the cathode and anode gas-liquid separator respectively, after this carried out gas-liquid separation, electrolytic solution entered cathode and anode circulation house steward.Part catholyte enters in other equipment through the product delivery pipe, in the finished product storage tank, another part is still stayed in the negative electrode circulation house steward, with from mending pure water that implementation of port enters after full and uniform the mixing, enter each catholyte ingress pipe by the negative electrode separating tube that is communicated with negative electrode circulation house steward bottom, continue to import corresponding catholyte reaction chamber by the catholyte ingress pipe and proceed electrolytic reaction; Meanwhile, part anolyte light salt brine is discharged from delivery pipe, another part is stayed in the anode circulation house steward, with from mending strong brine that implementation of port enters after full and uniform the mixing, enter each anolyte ingress pipe by the anode separating tube that is communicated with anode circulation house steward bottom, import corresponding anode electrolysis reaction chamber by the anolyte ingress pipe and proceed electrolytic reaction.Because the unit electrolytic bath bottom all has the liquid discrete part, therefore liquid can be evenly distributed to each position of electrolytic reaction chamber very much, again because unit electrolytic bath top is provided with effuser, gases a large amount of in reaction process gather derivation by effuser, avoid gas to concentrate on electrolytic reaction chamber top and formed vapour lock, and the electrolytic reaction chamber local pressure that causes fluctuation and gas-liquid concentration difference are excessive, make expensive ionic membrane impaired.
The designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model is compared with existing ion-membrane electrolysis device has following advantage: 1. more reasonable structure, each position gas-liquid concentration of electrolytic reaction chamber, temperature equal difference heteropole are little, cathode and anode electrolytic reaction chamber pressure and relative pressure are little and stable, the reaction conditions of medium is very good, and the work-ing life of ionic membrane is longer.
Existing inner natural circulation a bipolar type ion-exchange membrane electrolyzer, be that stock media is directly injected the electrolytic reaction chamber by certain flow velocity and flow, variation and difference by electrolytic reaction chamber portion temperature, concentration proportion etc., and gaslift effect and the inner flow-guiding structure of gas when generating, make every effort to reach the equilibrium that electrolytic reaction chamber concentration of medium and gas-liquid distribute.Therefore the reasonableness and the accuracy of the design of existing apparatus internal structure are had relatively high expectations, and generally are difficult to reach.All there is groove electrolyte inside density unevenness in existing inner natural circulation a bipolar type ion-exchange membrane electrolyzer, influences problems such as the performance of device and ionic membrane work-ing life.
Outside natural circulation complex pole type ion-membrane electrolytic device of the present utility model is by the appropriate design of outer loop member and unit electrolytic bath internal structure, medium carries out big flow and circulates fast during operation, basically eliminate electrolytic reaction chamber because the adverse consequences that caused of gas-liquid skewness, can make each position gas-liquid concentration of electrolytic reaction chamber, temperature contrast minimum.And the internal pressure of cathode and anode electrolytic reaction chamber and relative pressure can be controlled in little and stable status makes electrolytic reaction chamber medium reaction conditions very good, the high life of ionic membrane.2. simple in structure, easy for installation, floor space is little.
Each the electrolysis cells parallel operation combination of existing outside natural recirculating type one pole ion-membrane electrolysis device for satisfying the condition that electrolytic reaction chamber electric current uniform distribution is connected with conduction, needs with more precious metal material, and structure is loaded down with trivial details, the cost height, and floor space is big.
And the utility model makes designs simplification by reasonable structural design, has saved the use of precious metal material, reduce manufacturing cost, and volume is less relatively, reduces to take up an area of the space.3. can control the cycling condition of electrolytic reaction chamber preferably, stable.
The utility model imports continual and steady electrolytic solution from the outside to the electrolytic reaction chamber, and the liquid discrete part that is provided with of electrolytic reaction chamber portion, the effuser on top, all make circulation fully with stable, uniform gas-liquid distribution, prevent that electrolytic reaction chamber from forming the reaction dead band, improve running status, improve performance, minimizing is to the damage of ionic membrane, the work-ing life of extension fixture.
The multipole type of existing no matter which kind of Recycle design or the ion-membrane electrolysis device of acyclic type all have defectives such as being unfavorable for steady running, the performance and the work-ing life of remote effect device on structure design.4. the utility model has perfect safeguard procedures to galvanic corrosion, with the work-ing life of ensuring equipment.
The designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model is mainly used in the chlorine industry production.
Description of drawings
Fig. 1 is the overall structure synoptic diagram of the designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model.
Fig. 2 is the structural representation of unit electrolytic bath among Fig. 1.
Fig. 3 is the sectional side view of Fig. 2.
Fig. 4 is that the A-A of Fig. 2 is to view.
Fig. 5 is the structural representation of another kind of unit electrolytic bath.
Fig. 6 is the sectional view of Fig. 5.
Specific embodiment
In conjunction with specific embodiments the structure of the designed outside natural circulation complex pole type ion-membrane electrolytic device of the utility model and operation reaction process are described in further detail with reference to the accompanying drawings below.
Outside natural circulation complex pole type ion-membrane electrolytic device as shown in Figure 1 mainly is made up of electrolysis cells and outer loop member that a plurality of unit electrolytic baths and ionic membrane are formed.A plurality of electrolysis cells series combinations become electrolyzer main body 1.Outer loop member and the corresponding connection of each electrolysis cells in the electrolyzer main body 1.The outer loop member is by forming with the cathode and anode separating tube 37,38 of cathode and anode liquid ingress pipe 8,9, cathode and anode gas- liquid delivery line 13,14, cathode and anode gas-liquid separator 3,4 and cathode and anode circulation house steward 6,7 and its underpart of each corresponding configuration in electrolytic reaction chamber.Cathode and anode gas-liquid separator 3,4 is positioned at the top of outer loop member, with cathode and anode circulation house steward 6,7 corresponding connections.The top of cathode and anode gas-liquid separator 3,4 has exhaust outlet 39,40, can be connected with the gas transmission equipment of outside.Cathode and anode gas-liquid separator 3,4 lower ends also are respectively arranged with output object delivery pipe 2,5.Each the cathode and anode gas- liquid delivery line 13,14 that is communicated with cathode and anode electrolytic reaction chamber in each electrolysis cells in the electrolyzer main body 1 passes in the cathode and anode gas-liquid separator 3,4.Cathode and anode gas- liquid delivery line 13,14 is a media-resistant corrosive fluorine plastic tube.Cathode and anode circulation house steward 6,7 middle part has mends implementation of port 10,11.Cathode and anode circulation house steward 6,7 is communicated with the cathode and anode separating tube 37,38 of its underpart, and the cathode and anode liquid ingress pipe 8,9 of each unit electrolytic bath is communicated with cathode and anode separating tube 37,38 respectively.Cathode and anode liquid ingress pipe 8,9 is a media-resistant corrosive fluorine plastic tube.Be provided with sacrificial electrode 17 at connection mouth of pipe place in addition, to prevent galvanic corrosion.
The unit electrolytic bath that constitutes electrolyzer is shown in Fig. 2,3,4, cathode and anode electrolytic reaction chamber 20,21 by configuration back-to-back constitutes one, 20,21 close ionic membrane positions are provided with cathode and anode 43,44 in cathode and anode electrolytic reaction chamber, and cathode and anode 43,44 is separately fixed at the cathode and anode electrolytic reaction chamber by cathode and anode conductive supporting gusset 45,46; The frame 22,23,24 of the upper and lower and sidepiece of cathode and anode electrolytic reaction chamber 20,21 is the rectangular tubular molectron.Upper side frame 22 be two mutually independently effuser 32,33 form, respectively by a plurality of holes 47,48 and the corresponding connection in cathode and anode electrolytic reaction chamber, cathode and anode downstream end 15,16 is arranged respectively at effuser 32,33 tops corresponding with cathode and anode electrolytic reaction chamber, is connected with cathode and anode gas- liquid delivery line 13,14 respectively.Lower frame 23 is the rectangular pipe molectron, and the bottom has cathode and anode electrolytic reaction chamber inlet and takes over 18,19, respectively with 8, the 9 corresponding connections of cathode and anode liquid ingress pipe.Lower frame 23 by two mutually independently rectangle liquid dispersion pipe 41,42 form, be respectively arranged with liquid dispersion hole 25,25 ' with corresponding position, cathode and anode electrolytic reaction chamber above it, can make the liquid uniform distribution that enters the electrolytic reaction chamber.For preventing crevice corrosion, be fixed with precious metal trim 26,27,28 respectively in frame 22,23,24 anodes one side of upper and lower and sidepiece.
The outside natural circulation complex pole type ion-membrane electrolytic device of said structure is when using, as previously mentioned, after the energising operation, each electrolytic reaction chamber forms " gaslift " effect by producing a large amount of gas, drive liquid is up, import cathode and anode gas-liquid separator 3,4 by each cathode and anode gas- liquid delivery line 13,14, carry out gas-liquid separation.Liquid enters cathode and anode circulation house steward 6,7.A part of product of negative electrode enters other equipment through delivery pipe 2, the pure water of going into is mended after full and uniform the mixing by another one in negative electrode circulation house steward 6 with from mending implementation of port 10, enter each catholyte ingress pipe 8, continue to import corresponding catholyte reaction chamber 20 by liquid ingress pipe 8 and proceed electrolytic reaction; Meanwhile, anodic product part light salt brine is discharged through the delivery pipe 5 that anode circulation house steward 7 connects, another part with from mend implementation of port 11 mend the strong brine thorough mixing of going into evenly after, enter each anolyte ingress pipe 9, continue to import the anode electrolysis reaction chamber by liquid ingress pipe 9 and proceed electrolytic reaction.
This electrolyzer compact construction, volume is little; Pass through reasonable structural design; make the difference of electrolytic reaction chamber gas-liquid concentration, temperature, pressure reduction etc. minimum; the electrolytic reaction chamber stable reaction conditions; the kinds of protect design has improved the performance of device and the work-ing life of ionic membrane; and effectively prevent galvanic corrosion, thereby make this device performance that longer life cycle reliably be arranged.Wherein reasonably use precious metal material, cost is reduced, application promise in clinical practice is arranged.
Embodiment 2
As embodiment 1 described outside natural circulation complex pole type ion-membrane electrolytic device, its unit electrolytic bath also can adopt the structure shown in Fig. 5,6, cathode and anode electrolytic reaction chamber 20 ', 21 ' upper and lower frame 22 ', 23 ' are assembled by the metal of unlike material, cathode and anode dish 30,31 forms cathode and anode electrolytic reaction chamber 20 ', 21 ' with its fixing seal respectively, on top the top of frame 22 ' respectively correspondence be provided with effuser 32 ', 33 '.Cathode and anode electrolytic reaction chamber 20 ', 21 ' and effuser 32 ', 33 ' between upper side frame 22 ' go up a plurality of gas-liquid channels 36,36 ' should be arranged, the effuser 32 ' of catholyte reaction chamber 20 ' with its top is connected, the effuser 33 ' of anode electrolysis reaction chamber 21 ' with its top is connected.Cathode and anode electrolytic reaction chamber downstream end 15 ', 16 ' is arranged respectively at effuser 32 ', 33 ' top.Lower frame 23 ' bottom has inlet connection 18 ', 19 '.Be fixed with the precious metal trim 26 ', 27 ' of anti-crevice corrosion respectively in upper and lower frame 22 ', 23 ' anode seal side.Be provided with liquid in the corresponding position, bottom of cathode and anode electrolytic reaction chamber and disperse baffle plate 34,35, liquid disperses baffle plate 34,35 for the bending structure, is distributed with liquid dispersion hole 49,49 ' on it, can make the liquid uniform distribution that enters the electrolytic reaction chamber.
The outside natural circulation complex pole type ion-membrane electrolytic device of present embodiment has the advantage identical with embodiment 1 equally; make the electrolytic reaction chamber uniform gas-liquid distribution; gas can fully be pooled to effuser 32 ', 33 ' interior discharge in time, guarantees normally operation, protects ionic membrane injury-free.
In addition, in two above-mentioned embodiment, when the device operation, in whole unit electrolytic baths of series-fed combination zero-potential point is set,, can prevents galvanic corrosion effectively with outer loop member equi-potential.
The foregoing description is a specific embodiments only, and protection domain exceeds with claim.
Claims (10)
1. outside natural circulation complex pole type ion-membrane electrolytic device, mainly form by unit electrolytic bath and ionic membrane and outer loop member, unit electrolytic bath constitutes one by the cathode and anode electrolytic reaction chamber of configuration back-to-back, be provided with cathode and anode in cathode and anode electrolytic reaction chamber near the ionic membrane position, cathode and anode is separately fixed at the cathode and anode electrolytic reaction chamber by the conductive supporting gusset; A plurality of unit electrolytic bath series-feds are combined into the electrolyzer main body, adjacent unit electrolytic bath is separated by ionic membrane, it is characterized in that: the outer loop member by with the moon of the corresponding setting of each unit electrolytic bath, the anolyte ingress pipe, cloudy, anode gas-liquid delivery line, cloudy, the anode gas-liquid separator, cloudy, anode separating tube and the moon, anode circulation house steward forms, cloudy, the anode gas-liquid separator is positioned at the top of electrolyzer main body or outer loop member, with the moon, anode circulation house steward is corresponding to be communicated with, cloudy, anode gas-liquid separator lower end is respectively arranged with the output object delivery pipe in addition, the moon of each unit electrolytic bath, the corresponding the moon of anolyte compartment's downstream end, anode gas-liquid delivery line is with cloudy, the anode gas-liquid separator is communicated with; Respectively cathode and anode the is circulated cathode and anode separating tube of house steward bottom of cathode and anode liquid ingress pipe is communicated with the inlet connection of the cathode and anode electrolytic reaction chamber of each unit electrolytic bath; On cathode and anode circulation house steward, also have the benefit implementation of port.
2. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: the top of the cathode and anode electrolytic reaction chamber of unit electrolytic bath has effuser respectively, the effuser top has downstream end, and the porose or passage in effuser bottom communicates with corresponding electrolytic reaction chamber.
3. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: the bottom of the cathode and anode electrolytic reaction chamber of unit electrolytic bath is equipped with the liquid discrete part, is distributed with the liquid dispersion hole on the liquid discrete part.
4. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 3, its feature also is: the liquid discrete part of unit electrolytic bath can be the frame of bottom, cathode and anode electrolytic reaction chamber or is arranged on the liquid dispersion baffle plate of cathode and anode electrolytic reaction chamber bottom.
5. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: the lower frame of unit electrolytic bath is fixedly formed by different metallic substance assembly units, and its anode seal face is the precious metal material of anti-crevice corrosion.
6. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: the upper side frame of unit electrolytic bath is that the metal assembly unit of unlike material fixedly forms, and its anode seal face is the precious metal material of anti-crevice corrosion.
7. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: the side frame of unit electrolytic bath is a rectangular tubular, and the trim of anode electrolysis reaction chamber one side is that the noble metal plate face and the side frame of anti-crevice corrosion fixed.
8. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: connect nose end and be provided with sacrificial electrode.
9. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: cathode and anode liquid ingress pipe between cathode and anode electrolytic reaction chamber and the outer loop member and cathode and anode gas-liquid delivery line adopt corrosion resistant nonmetal pipe connecting.
10. outside natural circulation complex pole type ion-membrane electrolytic device according to claim 1, its feature also is: in the whole unit electrolytic baths with the series-fed combination zero-potential point is set, with outer loop member equi-potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294633 CN2589488Y (en) | 2002-12-27 | 2002-12-27 | Exterior natural circulation multi-pole type ionic membrane electrolyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02294633 CN2589488Y (en) | 2002-12-27 | 2002-12-27 | Exterior natural circulation multi-pole type ionic membrane electrolyzer |
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| CN2589488Y true CN2589488Y (en) | 2003-12-03 |
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| CN 02294633 Expired - Lifetime CN2589488Y (en) | 2002-12-27 | 2002-12-27 | Exterior natural circulation multi-pole type ionic membrane electrolyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306068C (en) * | 2002-12-27 | 2007-03-21 | 北京化工机械厂 | External natural circulation multipole ionic film electrolytic device |
-
2002
- 2002-12-27 CN CN 02294633 patent/CN2589488Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306068C (en) * | 2002-12-27 | 2007-03-21 | 北京化工机械厂 | External natural circulation multipole ionic film electrolytic device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20021227 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |