CN101522951B - Electrolysis cell - Google Patents
Electrolysis cell Download PDFInfo
- Publication number
- CN101522951B CN101522951B CN2007800361760A CN200780036176A CN101522951B CN 101522951 B CN101522951 B CN 101522951B CN 2007800361760 A CN2007800361760 A CN 2007800361760A CN 200780036176 A CN200780036176 A CN 200780036176A CN 101522951 B CN101522951 B CN 101522951B
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- electrode
- electrolyzer
- spring
- sections
- bar
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to an electrolysis cell of the single-element type design for chlor-alkali electrolysis plants, comprising an anode compartment and a cathode compartment, each of the two compartments containing an electrode connected to the rear wall of the respective compartment by means of parallel bars. The electrodes are thus subdivided into several sections. In accordance with the invention, at least one of two electrodes is provided with a curved shape in each section, this curved section protruding towards the opposite electrode and pressing a membrane area against the opposite electrode. According to a preferred embodiment, the curved shape of the various electrode sections is obtained by means of springs.
Description
Technical field
The present invention relates to a kind of be designed for the chloric alkali electrolysis device, mainly comprise the electrolyzer of the single part type of anolyte compartment and cathode compartment, each in above-mentioned two Room has been equipped with corresponding electrode, and each electrode is connected with the rear wall of respective compartments by parallel rod.Electrode thereby be subdivided into a plurality of sections by such bar.
Background technology
The chloric alkali electrolysis device of single part type design is known in the prior art, and in various industrial occasions widespread uses.For example this electrolyzer is at DE 198 16 334A1,
DE 44 14 146A1 or EP 0 095 039A1 are open.
Described in DE 10 2005 003527A1 or DE 10 2005 006555A1, attempted in having the plane-parallel structures of more and more narrow tolerance zone, as far as possible closely arranging two electrodes.But, be conditional clearly, so described parallel planes is located because the thickness that pole piece needs reduces.If electrode is provided with in the mode of parallel deviate, then the local voltage peak value is inevitably, thus the efficient of infringement equipment.Clearly, the summation of multiple little deviation causes disadvantageous Financial cost the most at last.
Very narrow electrode gap will produce extra problem: gas gathers at the anode periphery, and this has a detailed description in DE 10 2005 006555A1.The formation of gas causes the space obstruction between electrode and the film, thereby will influence electrolytical replenishing.In this concrete case, the profile of high-performance electrode is modified, and has suitable microtexture, yet it can not solve from the needed very strict manufacturing tolerance problem of macroscopic angle.
Summary of the invention
One of purpose of the present invention is to overcome the limitation of prior art, and favourable economically electrolyzer particularly is provided, and it is suitable for reducing the unfavorable result of the voltage aspect that produces owing to structure tolerance.Above-mentioned and other purpose will be clearer by following detailed description, and these descriptions should not be considered as limitation of the present invention, and scope of the present invention only is defined by the following claims.
Purpose of the present invention can realize by the described electrolyzer of claim 1.Electrolyzer according to the present invention comprises anolyte compartment and cathode compartment, and each chamber is by having the rear wall limited boundary of periphery frame and peripheral outer lips, and is provided with electrode in each chamber, and promptly anode is arranged in the anolyte compartment, and negative electrode is arranged in the cathode compartment.Two electrodes have a plurality of openings, and are connected by the rear wall of parallel rod with corresponding chamber, thereby electrode and their corresponding back spaces are divided into a plurality of sections.According to the present invention, with regard to the macrostructure of each electrode sections, each sections of at least one electrode in two electrodes has the curved part of giving prominence to towards comparative electrode from the principal plane of this electrode.Thereby between two electrodes, will produce pushing of film on a large scale.
In conjunction with the present invention, term " curved part " is interpreted as being meant the macroscopical form or the shape of whole portion, its for example be different from as described in DE10 2005 006555A1, there is the prior art of the distortion in the microcosmic scope in electrode shape.As for " main electrode plane ", it is an ideal plane in this article, and this plane is parallel with rear wall, and comprises and the minimum electrode surface point of the distance of rear wall.
In a preferred embodiment, meander electrode partly is arranged on the big zone of the apex lines both sides that are positioned at curved part intervenient film is pressed against on the comparative electrode, and the width of the surf zone that is pressed forms at least 20% of corresponding sections width.Find surprisingly that if pressure of contact surface is limited to prevent film impaired, then electrode each other also no longer must be spaced apart.By with the contact pressure of film between the electrode with cross over each parallel electrolyzer applied pressure decoupling zero via bar, can no longer consider all known plane parallel electrode design.
In a preferred embodiment according to electrolyzer of the present invention, at least one electrode has a plurality of arranged side by side and at the outstanding curved part of equidirectional, the quantity of curved part is corresponding with the quantity of sections.The curved part that relates to is herein answered at least 90% of coated electrode total height, more preferably is the entire electrode height.
In one embodiment, the curved part of electrode defines apex lines, and under the situation that does not have assembling, apex lines gives prominence to about 0.4 to 1.0mm from main electrode plane.
According to one embodiment of present invention, the shape of electrode bending part obtains by at least one spring that the mode that applies power with the rear side to electrode is provided with.Herein, " rear side " be with towards the opposite electrode side of the electrode side of film.
In one embodiment, be provided with a plurality of double-arm springs in the bar zone, described double-arm spring is made up of U-shaped or V-arrangement spring alternatively.Spring is mounted to and makes two arms be positioned at the relative both sides of a bar, thus act on respective electrode so that each sections of respective electrode towards the comparative electrode bending.Like this, electrode itself has the spring type characteristic similar to leaf spring.Such structure provides extra advantage, promptly when contact pressure makes the electrode longitudinal edge mobile laterally, can stand lateral shift with the single spring arm of electrode engagement.
In another embodiment, one or several spring is exerted pressure in the back center of electrode, thereby makes each sections towards the comparative electrode bending.Suitable design example in this case is as can being to be clamped between two bars or to be clamped in leaf spring or L shaped spring between shell rim and the bar.
In another embodiment, treating in the crooked corresponding sections on the respective electrode rear side, be provided with at least one load distribution element, described load distribution element has clavate or rail shape, and be positioned the center of corresponding sections abreast with bar, one of them or several spring bring pressure to bear on the described load distribution element.This design has the following advantages, and promptly such distribution member can be used for most of electrolyzer of the prior art and need not to do substantial change.More advantageously, make by non-conducting material at least in part to the described load distribution element of small part.Spring is more advantageously for to have unlimited profile, so that they influence electrolytical vertical circulation as small as possible.
In another embodiment, electrode is not made up of single member, but is divided into a plurality of independent electrode section parts, and described electrode section does not partly connect via bar by spring.Bar only is used for pressing load along the electrolyzer transmission that be arranged in parallel in this case.
Description of drawings
Hereinafter with reference to accompanying drawing the preferred embodiment of electrolyzer of the present invention is described, wherein:
Fig. 1 shows first embodiment according to electrolyzer of the present invention;
Fig. 2 shows the distortion of electrolyzer among Fig. 1;
Fig. 3 shows the chart of the test result of electrolyzer among Fig. 1;
Fig. 4 shows the further embodiment according to electrolyzer of the present invention;
Fig. 5 shows the distortion of electrolyzer among Fig. 4.
Embodiment
Fig. 1 shows first embodiment according to electrolyzer of the present invention.In this viewgraph of cross-section of electrolyzer (1), show the rear wall (2) of cathode compartment, it is equipped with the bar (6) that is used for fixing negative electrode (3).The anolyte compartment has similar design: use a plurality of bars (7) that are fixed to corresponding rear wall (5) to fix anode (4).It is between negative electrode (3) and the anode (4) that film (10) is positioned at two electrodes.When the parallel assembling of a plurality of such electrolyzers, be installed in the not shown framework and when being electrical contact with each other, the suitable transmission of pressure is also guaranteed in bar (6) and (7).
Fig. 1 shows bar (6) and (7) are how corresponding chamber and corresponding electrode to be divided into a plurality of sections (8) and (9).As mentioned above, one of show in the electrode---being anode (4) in the present embodiment---according to this embodiment of electrolyzer of the present invention and in manufacturing processed, be pre-formed as curved shape.In the assembling structure that illustrates in the drawings, anode (4) presses against film (10) on negative electrode (3), and the width (11) in the zone that wherein is pressed is illustrated by braces.In each sections of parallel segment (9), electrode is pressed in a similar manner.
In addition, also show among the figure as be known in the art like that, the zone between relative bar (6) and bar (7) is provided with distance piece (12), to be used to be limited in the deformation extent of anode between erecting stage (4).
Fig. 2 shows the sectional view of typical electrolyzer (1), and wherein, the degree of crook of anode (4) makes can be avoided film (10) is mechanically pressed against on negative electrode (3) after installing.The predeterminated level place of this figure plane, illustrate by long and short dash line (13) perpendicular to the position of the apex lines of this figure plane.In order more easily to understand this figure, the sections of relative cathode compartment (itself and sections shown in Figure 1 roughly the same) does not illustrate in the case.
The electrolyzer of type has passed through a series of tests and evaluation among Fig. 1, and compares with electrolyzer according to prior art.Two kinds of electrolyzers are identical at cathode side, and negative electrode is made up of flat wire netting sheet material basically.Form by laminate structure on the whole according to the anode of electrolyzer of the present invention with according to the anode of the contrast electrolyzer of prior art.Electrolyzer of the present invention is equipped with the anode assemblies of type shown in Figure 1, and anode is by this way to the negative electrode bending, that is: the film zone is pressed between anode and negative electrode greatly.Apply 5kA/m to two electrolyzers
2Current density.Fig. 3 shows the chart in the test result of operating period of 45 days.Electrolyzer according to the present invention has shown the bath voltage of comparison than the low about 0.05V of electrolyzer at whole test phase.
Fig. 4 shows another embodiment according to electrolyzer of the present invention.Especially, Fig. 4 shows the horizontal sectional view of the cathode compartment (21) of electrolyzer (20), comprising: rear wall (22), periphery frame or sidewall (23) and near peripheral outer lips (24).Be used for this cathode compartment being divided into vertical sections (26) through the bar (25) that the pressure that parallel each electrolyzer that is provided with transmits operating period is loaded.Unshowned in the drawings anolyte compartment can have identical substantially design.Cathodic segment (29) is fixed on U-shaped spring (27) and the Z type spring (28).Z type spring (28) is only along sidewall (23) location, and cathodic segment (29) is fastened on two identical U-shaped springs (27) that are positioned at cathode compartment.Cathode compartment among the figure is in the state before the assembling, and has clearly illustrated the maximum deflection of cathodic segment (29).Dotted line (30) mark the zero position when not having bending, and dotted line (31) has been indicated and zero position (30) at a distance of the height of the apex lines of certain distance (32).
Fig. 5 shows the sectional view according to another embodiment of electrolyzer of the present invention (20).Cathode compartment still is fixed to cathodic segment (29) bending by the spring (33) that is positioned at sections (26) central authorities of two contiguous bars (25) to embodiment illustrated in fig. 4 similar.In this case, spring (33) is illustrated as whisker (33), but as obvious to those skilled in the art, the scheme that can use other to be equal to.Whisker (33) is clamped between lower pad (34) and the upper pad (35), to guarantee the even transmission of power.
Above-mentioned explanation should not be considered as limitation of the present invention, and without departing from the scope of the invention, the present invention can implement according to different embodiment, and scope of the present invention is only limited by appending claims.
In the application's whole specification sheets and claims, term " comprises " and other parts or accrete existence are not got rid of in its distortion.
The discussion for file, decree, material, equipment, article etc. that comprises in this manual only is for background of the present invention is provided.Be not the part that hint or these objects of representing any or all form the priority date prior art before of each claim of the application, or general knowledge known in this field related to the present invention.
Claims (15)
1. single part type electrolyzer that is designed for chloric alkali electrolysis, comprise anolyte compartment and cathode compartment, in described anolyte compartment and the described cathode compartment each is by the rear wall limited boundary, be provided with corresponding electrode in each of described anolyte compartment and described cathode compartment, described electrode comprises anode that is arranged in the described anolyte compartment and the negative electrode that is arranged in the described cathode compartment, in the described electrode each all is connected with the described rear wall of respective compartments by parallel bar, described parallel bar is divided into a plurality of sections with corresponding electrode, and the described sections of at least one electrode in described two electrodes has towards the outstanding curved part of electrode of opposite;
It is characterized in that, the contour limit of the described curved part of described at least one electrode apex lines, and the film zone that described curved part is arranged to be positioned at described apex lines both sides presses against on described electrode of opposite, the width in the zone that wherein, is pressed be described sections width at least 20%.
2. according to the described electrolyzer of claim 1, it is characterized in that described at least one electrode comprises a plurality of curved parts arranged side by side and outstanding in the same direction.
3. according to the described electrolyzer of claim 2, it is characterized in that the quantity of described curved part is consistent with the total quantity of the sections of corresponding electrolytic cell chamber.
4. according to claim 2 or 3 described electrolyzers, it is characterized in that described curved part covers at least 90% of entire electrode height.
5. according to the described electrolyzer of claim 1, it is characterized in that the apex lines of described curved part gives prominence to about 0.4 to 1.0mm from main electrode plane under knocked-down situation.
6. according to the described electrolyzer of claim 1, it is characterized in that described curved portions shape obtains by at least one spring that acts on the electrode rear side.
7. according to the described electrolyzer of claim 6, it is characterized in that described at least one spring has two arms, described two arms lay respectively at the relative both sides of a bar in the described parallel rod.
8. according to the described electrolyzer of claim 7, it is characterized in that described spring is U-shaped or V-arrangement.
9. according to the described electrolyzer of claim 6, it is characterized in that described at least one spring is exerted pressure in the centre of at least one described electrode sections.
10. according to the described electrolyzer of claim 9, it is characterized in that described spring is leaf spring or L shaped spring, it is clamped between two bars of described parallel rod, perhaps by between the bar in tight peripheral frame outside in centre and the described parallel rod.
11. according to the described electrolyzer of claim 6, it is characterized in that, in each described electrode sections, be provided with at least one load distribution element, described at least one load distribution element is clavate or rod, and be positioned at the center of respective electrode sections abreast with described bar, wherein at least one spring brings pressure to bear on described at least one load distribution element.
12., it is characterized in that described at least one load distribution element is made by non-conducting material at least in part according to the described electrolyzer of claim 11.
13., it is characterized in that described spring opens wide with respect to vertical electrolyte flow according to the described electrolyzer of claim 6.
14., it is characterized in that described at least one electrode is made up of a plurality of independent section parts according to the described electrolyzer of claim 6, described section part connects by spring, but is not fixed on the described parallel rod.
15. according to the described electrolyzer of claim 14, it is characterized in that, be provided with a described electrode section part in each described electrode sections.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006046807A DE102006046807A1 (en) | 2006-09-29 | 2006-09-29 | Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode |
| DE102006046807.4 | 2006-09-29 | ||
| DE102006046808.2 | 2006-09-29 | ||
| DE102006046808A DE102006046808A1 (en) | 2006-09-29 | 2006-09-29 | Electrolysis cell used for chlor-alkali electrolysis comprises one electrode curved between two bars in the direction of the opposite-lying electrode |
| PCT/EP2007/060268 WO2008037770A1 (en) | 2006-09-29 | 2007-09-27 | Electrolysis cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101522951A CN101522951A (en) | 2009-09-02 |
| CN101522951B true CN101522951B (en) | 2011-03-09 |
Family
ID=39134461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800361760A Expired - Fee Related CN101522951B (en) | 2006-09-29 | 2007-09-27 | Electrolysis cell |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101522951B (en) |
| DE (1) | DE102006046808A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009036080A1 (en) | 2009-08-04 | 2011-02-17 | Siemens Aktiengesellschaft | Process for the decomposition of organic pollutants in industrial waste water and associated plant |
| CN102230207A (en) * | 2011-06-21 | 2011-11-02 | 华映光电股份有限公司 | Electrophoretic deposition apparatus and electrophoretic deposition method |
| CN102304723A (en) * | 2011-09-20 | 2012-01-04 | 福建师范大学 | Three-membrane four-chamber chlorine-free alkali-producing electrolytic tank consisting of anion and cation exchange membranes and bipolar membrane |
| ITMI20130563A1 (en) * | 2013-04-10 | 2014-10-11 | Uhdenora Spa | METHOD OF ADAPTATION OF ELECTROLYTIC CELLS HAVING FINISHED INTERELECTRODUCTS DISTANCES |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859196A (en) * | 1974-01-03 | 1975-01-07 | Hooker Chemicals Plastics Corp | Electrolytic cell including cathode busbar structure, cathode fingers, and anode base |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2226141A1 (en) * | 1972-05-29 | 1973-12-13 | Pennwalt Corp | Tetrahydro-4-quinazolinone derivs - with analgesicactivity |
| DE3219704A1 (en) * | 1982-05-26 | 1983-12-01 | Uhde Gmbh, 4600 Dortmund | MEMBRANE ELECTROLYSIS CELL |
| DE3501261A1 (en) * | 1985-01-16 | 1986-07-17 | Uhde Gmbh, 4600 Dortmund | ELECTROLYSIS |
| DE19816334A1 (en) * | 1998-04-11 | 1999-10-14 | Krupp Uhde Gmbh | Electrolysis apparatus for the production of halogen gases |
| DE102005006555A1 (en) * | 2005-02-11 | 2006-08-17 | Uhdenora S.P.A. | Electrode for electrolysis cells |
-
2006
- 2006-09-29 DE DE102006046808A patent/DE102006046808A1/en not_active Ceased
-
2007
- 2007-09-27 CN CN2007800361760A patent/CN101522951B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3859196A (en) * | 1974-01-03 | 1975-01-07 | Hooker Chemicals Plastics Corp | Electrolytic cell including cathode busbar structure, cathode fingers, and anode base |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006046808A1 (en) | 2008-04-03 |
| CN101522951A (en) | 2009-09-02 |
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