EP3816322A1 - Élément électrochimique - Google Patents

Élément électrochimique Download PDF

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Publication number
EP3816322A1
EP3816322A1 EP20204627.2A EP20204627A EP3816322A1 EP 3816322 A1 EP3816322 A1 EP 3816322A1 EP 20204627 A EP20204627 A EP 20204627A EP 3816322 A1 EP3816322 A1 EP 3816322A1
Authority
EP
European Patent Office
Prior art keywords
anolyte
cathode
chamber
anode
electrochemical cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20204627.2A
Other languages
German (de)
English (en)
Inventor
Rieke NEUBER
Tobias Graßl
Thorsten Matthée
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THORSTEN, MATTHEE
Original Assignee
Condias GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Condias GmbH filed Critical Condias GmbH
Publication of EP3816322A1 publication Critical patent/EP3816322A1/fr
Pending legal-status Critical Current

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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
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/28—Per-compounds
    • 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
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/021—Process control or regulation of heating or cooling
    • 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
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • 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
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms

Definitions

  • the invention relates to an electrochemical cell which has an anode chamber with an anode, an anolyte feed line through which an anolyte can be conducted into the anode chamber, an anolyte discharge line through which the anolyte can be discharged from the anode chamber, a cathode chamber with a cathode which has a cathode base body , and a membrane disposed between the anode chamber and the cathode chamber.
  • Such electrochemical cells have long been known in various embodiments from the prior art. For example, they are used to produce electrolyzed water or ozonated water. Such cells are, for example, from the DE 10 2014 203 374 A1 or the DE 10 2014 203 376 A1 described. They use diamond electrodes, which have a large number of depressions, grooves or grooves, and which are in direct contact with the membrane that separates the cathode chamber from the anode chamber. The membrane is designed to be ion-permeable.
  • a directed flow is generated in the electrode chamber formed essentially by the depressions of the electrode, so that ions formed on the electrode can be distributed as quickly and homogeneously as possible in the flowing liquid.
  • Electrochemical cells have at least two electrodes, an anode and a cathode. They can be designed as divided cells in which the anode is arranged in an anode chamber and the cathode is arranged in a cathode chamber. In this case, the two spaces are separated from one another by an ion-conductive membrane, which can be a semipermeable membrane or a diaphragm, for example.
  • a medium located in the anode and / or cathode chamber can be decomposed and / or converted, such as, for example, during the electrolysis of water.
  • electrochemical cell it is also possible to use the electrochemical cell in the context of so-called electrosynthesis in the production of certain organic or inorganic compounds.
  • Liquids with substances dissolved in them are used as electrolytes. These substances are, for example, starting materials for electrosynthesis.
  • the electrolytes are introduced into the anode and / or cathode chamber, for example, or flow continuously through them.
  • An electrolyte introduced into the anode chamber is also referred to as an anolyte
  • an electrolyte introduced into the cathode chamber is also referred to as a catholyte.
  • Divided electrochemical cells in which an ion-permeable membrane or a diaphragm is located between the anode chamber and the cathode chamber, usually have a relatively large distance between the anode and the cathode, which leads to a relatively large ohmic resistance and thus to one leads to considerable energy requirements. In the case of the cells already mentioned, this is achieved in that the anode and / or the cathode come into direct contact with the respective membrane. Although this minimizes the distance between the two electrodes, the membrane is exposed to considerable mechanical and electrochemical stress. In addition, a structure in the electrode surface is necessary in order to achieve a sufficient chamber volume of the anode chamber and / or the cathode chamber.
  • this is complex in terms of production technology and, on the other hand, it ensures that the membrane has an often inadequate service life, particularly at high current densities.
  • this cell type has very different local current densities due to the structured surface of the electrode.
  • Diamond electrodes are also particularly susceptible to mechanical loads, such as impacts.
  • the diamond coating which is usually applied to a metallic base body or substrate made of a semiconductor, often flakes off when exposed to such loads, which is also the case, especially when it has been in operation for many years hydrodynamically induced pressure surges can happen. This flaking is very disadvantageous, since the underlying body is exposed at these points and is exposed to chemical and electrochemical attack, especially at high current densities, as a result of the strong electrical fields occurring at the edges. Since these base bodies are generally far less corrosion-resistant than a diamond layer, the electrode often fails quickly in this case.
  • the invention is based on the object of proposing an electrochemical cell with which it is possible, in particular, to also synthesize per compounds with high efficiency.
  • the invention solves the problem posed by an electrochemical cell according to the preamble of claim 1, in which the anolyte feed line and / or the anolyte discharge line run in the cathode base body.
  • the cathode base body now fulfills further functions, since it houses at least part of the anolyte feed line and / or the anolyte discharge line.
  • the anolyte must never come into contact with the cathode or a component of the cathode in order to avoid a reduction in the oxidative species generated in the anode chamber.
  • This is of course known in particular for anolyte drainage.
  • the invention is based on the knowledge that the contact can be almost completely or completely avoided and the remaining contact is almost completely harmless. The reduction is minimal and does not outweigh the benefits.
  • the anode chamber can be designed almost freely and meet the requirements of an industrial production of per connections.
  • Per compounds are in particular peroxo compounds, inorganic peracids and their salts and other per compounds that do not contain oxygen.
  • Peroxo compounds are characterized by the fact that they contain OO groups in their molecular structure, which therefore have a high oxidation potential and can be used for typical oxidative reactions.
  • the cell according to the invention can be adapted to the optimal requirements in the production of these substances in particular, particularly preferably peroxomonosulfates, peroxodisulfates, disulfides, perchlorates, perbromatics, permanganates, uraniumates and periodates.
  • the anode chamber is delimited by a chamber frame which is fluidically connected to the anolyte feed line and / or the anolyte discharge line and which is preferably made of a plastic, particularly preferably a polymer, such as PTFE (polytetrafluoroethylene or polytetrafluoroethene) or PVDF (polyvinylidene fluoride) or polyvinylidene difluoride).
  • the anode chamber is preferably delimited on one side by the anode and on the opposite side by the membrane. The side surfaces between these two sides are set by the chamber frame, so that this limits the anode chamber in four directions.
  • the chamber frame is preferably designed with a recess which forms the actual anode chamber.
  • the chamber frame itself is fluidically connected to the anolyte supply line and / or the anolyte discharge line, which are located in the cathode base body, so that an anolyte, which is supplied through the anolyte supply line from the cathode base body, enters the chamber frame and is guided from there into the anode chamber.
  • the anolyte that emerges from the anode chamber leaves the anode chamber in the chamber frame and is conducted from there into the anolyte discharge line via the fluid-technical connection.
  • the anode itself does not have to assume any of these functions and can therefore be optimally selected for the production of the respective substance.
  • the volume and in particular the thickness of the anode chamber that is to say the distance between the electrode and the membrane, is determined by the thickness of the chamber frame and is therefore freely adjustable. If the chamber frame is made from the plastics mentioned, it is ensured that the substances produced are not changed or react.
  • the chamber frame preferably has at least one distributor space which is in fluid communication with the anolyte feed line and / or the anolyte discharge line.
  • the chamber frame preferably has two distributor spaces, one of which is in fluid communication with the anolyte feed line and one with the anolyte discharge line.
  • the distribution spaces preferably extend over the entire extent of the anode chamber in one spatial direction. In this way, a homogeneous and, if possible, laminar flow of the anolyte into and out of the anode chamber is ensured.
  • the chamber frame preferably has flow guide elements which are set up to direct a flow of an anolyte flowing out of the distributor space into the anode chamber and / or an anolyte flowing out of the anode chamber into the distributor space.
  • the anolyte consequently particularly preferably flows out of the anolyte feed line in the cathode base body into the first distribution space of the chamber frame and is there distributed over a large part, particularly preferably the entire extent of the anode chamber in one spatial direction.
  • the flow guide elements which homogenize and calm the flow, are preferably located between the actual anode chamber and the respective distributor space. If possible, on the opposite side of the chamber frame, there are further flow guide elements that establish the connection between the actual anode chamber and the second distributor space. This second distributor space is preferably in fluid-technical contact with the anolyte discharge line.
  • the anode is a diamond electrode, which preferably has a structureless surface, preferably a structureless flat surface. This ensures that the diamond electrode does not have any bores, edges, depressions or undercuts that are sensitive to mechanical loads and where the diamond layer could flake off the substrate. This significantly increases the durability and service life of the electrode. In addition, a homogeneous current density and thus also a homogeneous electric field is generated. As a result, if possible, the entire anode surface that comes into contact with the anolyte can be used to generate the desired substance, which increases the efficiency and yield.
  • the use of such a diamond electrode is an invention of its own Electrode is preferably also arranged in an electrochemical cell according to the preamble of claim 1.
  • the chamber frame preferably rests directly on the diamond electrode.
  • the electrochemical cell is subjected to a mechanical tension which presses the chamber frame against the diamond electrode.
  • a further seal or a further sealing element is not necessary through a skilful choice of materials, in particular when using the plastics mentioned for the chamber frame. This makes the electrochemical cell structurally simpler and cheaper to manufacture.
  • the cathode preferably has a cathode surface which is arranged on the cathode base body and which preferably consists of a metal, for example steel.
  • the cathode surface forms the actual cathode to which electrical current is applied. It is of course also possible to form the cathode surface in one piece with the cathode base body.
  • the advantage of a separate cathode surface is that the cathode base body is made of a different material, preferably a polymer, particularly preferably PTFE or PVDF. This applies in particular to the area in which the anolyte feed line and / or the anolyte discharge line are located. In this case it is ensured that the substances produced do not come into contact with a metal, for example steel, when they are discharged from the anode chamber.
  • At least one spacer element is located between the membrane and the anode and / or between the membrane and the cathode.
  • This spacer element prevents the membrane from coming into mechanical contact with the anode or the cathode, which could damage it.
  • the spacer element which can in particular be designed as a spacer grid, is preferably made from a polymer, in particular from PTFE or PVDF.
  • the structure of the spacer grid or the spacer element should be designed in such a way that it does not interfere with the homogeneous flow in the anode chamber, and in the cathode chamber in such a way that the lowest possible flow resistance can be opposed to a catholyte.
  • the cell preferably has a catholyte feed line through which a catholyte can be conducted into the cathode chamber, and a catholyte discharge line through which the catholyte can be discharged from the cathode chamber.
  • the catholyte feed line and the catholyte discharge line are preferably located in the cathode base body.
  • the membrane is preferably arranged between the cathode base body and the chamber frame, wherein it is particularly preferably clamped between the two components.
  • a separate sealing element for example a sealing ring. This is inserted, for example, into a groove provided for this purpose in the cathode base body and seals the cathode chamber from the outside. The membrane is then clamped between the chamber frame and the sealing element. Both elements are elastic, but at least flexible elements, so that sufficient tightness is achieved.
  • the distance between the anode and the cathode is preferably less than 5 mm, preferably less than 3 mm, particularly preferably less than 2 mm.
  • the distance can be selected and adjusted by choosing the thickness of the chamber frame.
  • two of the electrochemical cells described here are arranged mirror-symmetrically next to one another. Centrally located is the substrate with the two diamond layers applied to two opposite sides of the substrate, which form the two diamond electrodes. They can be acted upon by a single electrical contact with electrical current and preferably both form the anode. If one goes from this innermost area to the outside, the anode chamber, which is formed by a chamber frame, follows the anode.
  • the chamber frames are preferably designed identically and are in direct contact with the two diamond electrodes. They are each covered by a membrane that delimits the two anode chambers towards the outside. This is followed by two basic cathode bodies that have the properties described here have and in particular have the two anolyte feed lines and / or anolyte discharge lines.
  • a temperature control device can also be arranged on the side of the corresponding substrate facing away from a diamond electrode.
  • This temperature control device makes it possible to cool or heat the anode.
  • the main application is likely to be in cooling the anode, since a lot of energy is supplied to the anode, particularly at high current densities, which heats it up.
  • the anolyte can also be cooled so that the anode is supplied to a state that is as cold as possible.
  • the temperature control device is consequently preferably a cooling device, for example a metallic heat sink, in which there are channels through which a coolant is passed.
  • An ultrasonic sonotrode is preferably assigned or can be assigned to the cathode base body.
  • the cathode base body preferably has at least one sonotrode receptacle.
  • a sonotrode can be used to dissolve any deposits on the cathode using ultrasound.
  • Figure 1 shows a section through an electrochemical cell 2 according to an embodiment of the present invention. This has an anode chamber 4 with an anode 6 and a cathode chamber 8 with a cathode surface 10.
  • the cathode surface 10 is formed in a recess of a cathode base body 12 and forms the cathode with it.
  • the cathode chamber 8 is delimited on the one hand by the cathode base body 12 and the cathode surface 10 and on the other hand by an ion-conductive membrane 14.
  • the cathode base body 12 has a catholyte feed line 16 and a catholyte discharge line 18, each of which is fluidically connected to the cathode chamber 8.
  • the cathode base body 12 has an anolyte feed line 20 and an anolyte discharge line 22, each of which is fluidically connected to the anode chamber.
  • the anolyte feed line 20 opens into a first distribution space 24 of a chamber frame 26.
  • the chamber frame 26 has a plurality of in Figure 1 flow guide elements 28, not shown, which form a fluidic connection between the anode chamber 4 and the first distributor space 24.
  • the chamber frame 26 On the side opposite the first distributor chamber 24, the chamber frame 26 has a second distributor chamber 30 which is fluidically connected to the anode chamber 4 via a plurality of flow guide elements 32 (not shown in FIG. 1). At the same time, the second distributor space 30 is in fluidic communication with the anolyte discharge line 22.
  • the anolyte consequently flows via the anolyte feed line 20 into the first distribution space 24 of the chamber frame 26 and from there via the flow guide elements 28 into the anode chamber 4. From the anode chamber 4 the anolyte flows via the flow guide elements 28 into the second distribution space 30 and from there via the anolyte discharge line 22 out of the cathode base body 12.
  • the anode chamber 4 is formed by the anode 6, which has an anode base body 34, for example made of graphite, silicon or a metal, which is coated with a, in particular boron-doped, diamond layer 36, as well as the chamber frame 26 and the ion-conductive membrane 14.
  • the chamber frame 26 has an in Figure 1 Anode chamber recess 38, not shown, the side surfaces of which delimit the anode chamber 4 laterally.
  • the chamber frame 26 rests against the anode 6 and the ion-conductive membrane 14 in such a way that the anode chamber 4 is liquid-tight.
  • the cathode base body 12 has a sealing element recess 40 running around the cathode surface 10, in which a sealing element 42 in the form of an O-ring is mounted.
  • a sealing element 42 in the form of an O-ring is mounted.
  • This represents in particular a safety measure to ensure the liquid tightness of the cathode chamber 8, that is to say between the ion-conductive membrane 14 on the one hand and the cathode base body 12 on the other hand.
  • no sealing element recess 40 and sealing element 42 are present.
  • the cathode chamber 8 is then sealed exclusively via the cathode base body 12 and the ion-conductive membrane 14.
  • the electrochemical cell 2 On the side of the anode 6 facing away from the anode chamber 4, the electrochemical cell 2 has a cooling body 44, which is preferably made of steel, in particular stainless steel, with a cooling line 46, by means of which a coolant can be conducted along the anode 6, to cool or temper them.
  • a coolant seal 48 is arranged between the heat sink 44 and the anode 6.
  • FIG 2 a further embodiment of an electrochemical cell 2 is shown.
  • This has a central anode 6, to which in Figure 2 a chamber frame 26 is connected to the rear and to the front.
  • the electrochemical cell 2 consequently has two anode chambers 4 with only one anode 6, which, however, has an anode surface, in particular a diamond coating, on each side.
  • the chamber frame 26 is followed by an ion-conductive membrane 14 to the front and to the rear in each case a sealing element 42, in the form of a rubber seal, which in the assembled state is arranged in a sealing element recess 40 of the respective adjoining cathode base body 12.
  • the sealing element recess 40 runs around the respective cathode surface 10.
  • the electrochemical cell 2 consequently has an anode chamber 4 and a cathode chamber 8, these being separated from one another by an ion-conductive membrane 14.
  • the mutually corresponding anode spaces 4 and cathode spaces 8 each form a cell so that the in Figure 2 illustrated electrochemical cell arrangement has two electrochemical cells 2.
  • the cathode base bodies 12 each have a catholyte feed line 16 and a catholyte discharge line 18 as well as an anolyte feed line 20 and an anolyte discharge line 22.
  • a catholyte feed line 16 and a catholyte discharge line 18 as well as an anolyte feed line 20 and an anolyte discharge line 22.
  • parallel rows with openings are indicated, which serve as outlets for the lines mentioned.
  • the lowermost outlets are those of the anolyte supply line 20.
  • these are in fluidic connection with the first distributor space 24 of the associated chamber frame 26, so that the anolyte can flow into the anode chamber 4 via the flow guide elements 28.
  • the respective anode chamber 4 is laterally delimited by the side surfaces of the anode chamber recess 38 of the chamber frame 26.
  • the row of outlets above it belongs to the catholyte feed line 16 and the row above it belongs to the catholyte discharge line 18.
  • the top row belongs to the anolyte discharge line 22, which, in the assembled state, is in fluidic communication with the second distribution chamber 30.
  • the second distributor space 30 is in turn in fluid communication with the anode chamber 4 via the flow guide elements 32.
  • the cathode base bodies 12 have a corresponding number of fastening recesses 52.
  • the ion-conductive membranes 14, the chamber frames 26 and the Anode 6 is fixed relative to one another by a clamping force between the two cathode base bodies 12. This clamping force is generated in particular by the fastening means 50.
  • the entire electrochemical cell 2 is also arranged on a base plate 54.
  • electrolyte connection elements 66 are connected to the anolyte supply lines 20 and the anolyte drainage lines 22, as well as to the catholyte supply lines 16 and the catholyte drainage lines 18 of the cathode base body 12. They are preferably each marked with, in Figure 2 External supply and discharge lines, not shown, for anolyte and catholyte are fluidically connected.
  • FIG 3 shows an embodiment of a cathode base body 12 for an electrochemical cell 2 according to an embodiment of the present invention.
  • This has a cathode surface 10, which is formed in one piece with the cathode base body 12, in the present case made of steel.
  • the cathode surface 10 has a so-called flow field 56 made up of a plurality of channels which run along an imaginary grid. The catholyte flows through these channels during operation of an electrochemical cell 2 with the cathode base body 12.
  • a sealing element recess 40 runs around the cathode surface 10, in which a sealing element 42 is arranged in the assembled state of the electrochemical cell 2.
  • the cathode base body 12 each has a catholyte supply line 16, a catholyte drainage line 18, an anolyte supply line 20 and an anolyte drainage line 22.
  • the anolyte supply line 20 is fluidically connected to a row of anolyte supply openings 58 in the cathode base body 12, via which an anolyte can be supplied to an anode chamber 4 (not shown).
  • catholyte feed openings 60 are formed in the cathode base body 12, which are fluidically connected to the catholyte feed line 16. They are arranged in the lower ends of the channels of the flow field 56 and serve to feed a catholyte into the cathode chamber 8, not shown.
  • the cathode base body 12 has a row of catholyte discharge openings 62 which are arranged in the upper ends of the channels of the flow field 56 and are fluidically connected to the catholyte discharge line 18. They serve to discharge a catholyte from the cathode chamber 8.
  • the cathode base body 12 also has a number of anolyte discharge openings 64 via which an anolyte can be discharged from the anode chamber 4. They are fluidically connected to the anolyte discharge line 22.
  • the cathode base body 12 also has a multiplicity of fastening recesses 52 for fastening means 50 (not shown).
  • FIG. 4 shows a further embodiment of a cathode base body 12.
  • a chamber frame 26 is placed on this.
  • the cathode surface 10 can be seen with a flow field 56 of channels arranged in a grid-like manner to one another.
  • an ion-conducting membrane 14 is arranged between the chamber frame 26 and the cathode base body 12, so that the cathode surface 10 and the flow field 56 would not be visible.
  • This ion-conducting membrane 14 is not shown in FIG. 4 for the sake of clarity.
  • the cathode surface 10 is designed as a separate component, in particular as a steel or stainless steel plate, to the cathode base body 12.
  • the cathode base body 12 is preferably made of a plastic, in particular PEEK.
  • the cathode surface 10 each has a catholyte feed opening 60 and a catholyte discharge opening 62 through which a catholyte can flow into and out of the cathode chamber 8, not shown.
  • the catholyte supply opening 60 is in fluidic connection with a catholyte supply line 16 (not shown) and the catholyte discharge opening 62 is in fluidic connection with a catholyte discharge line 18 (not shown).
  • the cathode base body 12 also has an elongated anolyte supply opening 58, which is fluidically connected on the one hand to an anolyte supply line 20 (not shown) and on the other hand to a distributor space 24 of the chamber frame 26.
  • the cathode base body 12 has an elongated anolyte discharge opening 64, which is fluidically connected on the one hand to an anolyte discharge line 22 (not shown) and on the other hand to the distributor space 30 of the chamber frame 26.
  • the chamber frame 26 in turn has a plurality of flow guide elements 28 and flow guide elements 32, which are each in fluidic communication with the distributor spaces 24, 30 of the chamber frame 26 and the anode chamber recess 38.
  • the cathode base body 12 has six fastening recesses 52 for fastening means 50 (not shown).
  • Figure 5 shows the perspective view of an embodiment of a chamber frame 26 for an electrochemical cell 2.
  • the chamber frame 26 is preferably made of a plastic, in particular PTFE or PVDF, and has three recesses.
  • the distributor space 24 is in fluidic connection with the anode chamber recess 38 via flow guide elements 28.
  • the distributor space 30 is fluidically connected to the anode chamber recess 38 via flow guide elements 32.

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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)
  • Inorganic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
EP20204627.2A 2019-10-29 2020-10-29 Élément électrochimique Pending EP3816322A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019129202.6A DE102019129202A1 (de) 2019-10-29 2019-10-29 Elektrochemische Zelle

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EP3816322A1 true EP3816322A1 (fr) 2021-05-05

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FR3130856A1 (fr) * 2021-12-17 2023-06-23 Arianegroup Sas Système électrolytique pour la synthèse du perchlorate de sodium

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Publication number Priority date Publication date Assignee Title
DE102007042171A1 (de) * 2007-09-05 2009-03-12 Eilenburger Elektrolyse- Und Umwelttechnik Gmbh Elektrolysezelle mit hoher Stromkapazität zur Herstellung eines Ozon-Sauerstoffgemisches
DE102014203372A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Elektrodenanordnung für eine elektrochemische Behandlung einer Flüssigkeit
DE102014203376A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Verfahren zum Herstellen von ozonisiertem Wasser
DE102014203374A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Verfahren zum elektrochemischen Herstellen von elektrolysiertem Wasser
DE102016113727A1 (de) * 2016-07-26 2018-02-01 Condias Gmbh Verfahren zur elektrochemischen Herstellung von Peroxodicarbonat und elektrochemische Zelle zur Durchführung des Verfahrens

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Publication number Priority date Publication date Assignee Title
US4444631A (en) * 1981-05-11 1984-04-24 Occidental Chemical Corporation Electrochemical purification of chlor-alkali cell liquor
US9873951B2 (en) * 2012-09-14 2018-01-23 Avantium Knowledge Centre B.V. High pressure electrochemical cell and process for the electrochemical reduction of carbon dioxide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007042171A1 (de) * 2007-09-05 2009-03-12 Eilenburger Elektrolyse- Und Umwelttechnik Gmbh Elektrolysezelle mit hoher Stromkapazität zur Herstellung eines Ozon-Sauerstoffgemisches
DE102014203372A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Elektrodenanordnung für eine elektrochemische Behandlung einer Flüssigkeit
DE102014203376A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Verfahren zum Herstellen von ozonisiertem Wasser
DE102014203374A1 (de) 2014-02-25 2015-08-27 Condias Gmbh Verfahren zum elektrochemischen Herstellen von elektrolysiertem Wasser
DE102016113727A1 (de) * 2016-07-26 2018-02-01 Condias Gmbh Verfahren zur elektrochemischen Herstellung von Peroxodicarbonat und elektrochemische Zelle zur Durchführung des Verfahrens

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