EP0333281A1 - Membranelektrolysevorrichtung - Google Patents

Membranelektrolysevorrichtung Download PDF

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Publication number
EP0333281A1
EP0333281A1 EP89200629A EP89200629A EP0333281A1 EP 0333281 A1 EP0333281 A1 EP 0333281A1 EP 89200629 A EP89200629 A EP 89200629A EP 89200629 A EP89200629 A EP 89200629A EP 0333281 A1 EP0333281 A1 EP 0333281A1
Authority
EP
European Patent Office
Prior art keywords
electrolysis device
anode
membrane electrolysis
anodes
membrane
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.)
Withdrawn
Application number
EP89200629A
Other languages
German (de)
English (en)
French (fr)
Inventor
Karl Lohrberg
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of EP0333281A1 publication Critical patent/EP0333281A1/de
Withdrawn legal-status Critical Current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
    • C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • C25B11/03—Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form perforated or foraminous

Definitions

  • the invention relates to a membrane electrolysis device for generating hydrogen, chlorine and alkali hydroxide from an alkali chloride solution, with a semipermeable membrane with cation exchange properties between each anode and cathode, the membrane electrolysis device having parts from a diaphragm electrolysis device.
  • the invention has for its object to significantly reduce the manufacturing costs for a membrane electrolysis device in that parts of a diaphragm electrolysis device, which can also be used, are also used. According to the invention, this is done in that the anodes of the membrane electrolysis device have a frame in which 1 to 3 anodes from a diaphragm electrolysis device are fastened, each anode having electrochemically active anode surfaces with a lattice structure and a current conductor arranged between the anode surfaces and the current conductor with the frame connected is.
  • the anodes attached to the frame may have been used in diaphragm electrolysis, or were originally made for this purpose and kept in stock.
  • the anodes of the diaphragm electrolysis have anode surfaces with a lattice structure, for example using expanded metal. Expensive metals such as titanium are used in their manufacture. When electrolysis devices on the modern and much more powerful Membrane process, it is essential for the costs to be able to continue to use existing anodes of the diaphragm electrolysis. This can reduce the manufacturing cost of the membrane electrolysis device by 20 to 30%.
  • the anode of FIGS. 1 and 2 intended for membrane electrolysis has a frame (1) made of titanium, for example, in which two anodes (2) and (3) are fastened, which were intended for diaphragm electrolysis or already in one such were used.
  • the anodes (2) and (3) have electrochemically active anode surfaces (2a, 2b) and (3a, 3b) with a lattice structure.
  • the front anode surface (3b) is omitted in FIG. 1 in order to better show the interior of the anode (3).
  • a current conductor (5) which is usually made of copper, runs between the anode surfaces of each anode.
  • the lower end of the current conductor (5) is passed through the frame so that its free end (5a) can be connected to a current-carrying plate (7).
  • the alkali chloride brine to be electrolyzed is passed through a tube (10) which is passed through the frame into the respective cell, and anolyte and chlorine are drawn off through line (11).
  • a metal tube (12) can be inserted between the anode surfaces. It ensures that the liquid can flow downward unhindered, while gas bubbles flow upwards outside the tube (12) and in particular in front of the anode surfaces. This creates a desired circulation of the electrolyte, which prevents depletion of the electrolyte in NaCl in the vicinity of the membrane.
  • a modified diaphragm anode (15) is shown somewhat enlarged in cross section, which can also be installed in the frame (11).
  • Their anode surfaces (15a) and (15b) are not in contact with the current conductor (16), they receive the current through current distribution plates (17, 18, 19) which are connected to the current conductor (16).
  • the current distribution plate (19) which together with the current conductor (16) has a closed cross section, forms a hollow body or channel (20) that is axially parallel to the current conductor (16).
  • This channel (20) like the metal tube (12) of FIG. 1, favors the downward flow of the electrolyte between the anode surfaces (15a) and (15b) and thus the electrolyte circulation with the advantages mentioned.
  • the described anodes for membrane electrolysis together with suitably designed cathodes in the sequence of anode - membrane - cathode - membrane - anode - etc. form an electrolysis device of the filter press type.
  • the cathode can be of any shape and above all plate-shaped.
  • An example of a cathode is shown in FIG. 4.
  • Horizontal plates (22) are fastened in a frame (21), between which there are gaps (23) for gas discharge.
  • a side tongue (25) is used for the power connection, alkali chloride brine is fed through line (26) and catholyte and hydrogen are drawn off through line (27). Details of the cathode known per se are described in US Pat. No. 4,474,612.
  • FIG. 5 shows the arrangement of an electrochemically inactive network (29) in front of the anodes (2) and (3) in a representation corresponding to FIG. 2.
  • the network can e.g. are made of titanium and are non-activating coated.
  • An activation coating e.g. with rhutenium oxide, but is found on anodes (2) and (3).
  • the net is attached to the frame (1), it supports the membrane and bridges gaps, corners and pointed edges on the top of the anodes (2, 3).
  • a net (29) can be arranged on both outer sides of the anode.

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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)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
EP89200629A 1988-03-15 1989-03-11 Membranelektrolysevorrichtung Withdrawn EP0333281A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3808495 1988-03-15
DE3808495A DE3808495A1 (de) 1988-03-15 1988-03-15 Membranelektrolysevorrichtung

Publications (1)

Publication Number Publication Date
EP0333281A1 true EP0333281A1 (de) 1989-09-20

Family

ID=6349709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200629A Withdrawn EP0333281A1 (de) 1988-03-15 1989-03-11 Membranelektrolysevorrichtung

Country Status (5)

Country Link
US (1) US4936972A (nl)
EP (1) EP0333281A1 (nl)
JP (1) JPH0238589A (nl)
BR (1) BR8901193A (nl)
DE (1) DE3808495A1 (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114807972A (zh) * 2022-05-27 2022-07-29 广东卡沃罗氢科技有限公司 一种电解纯水制氢用的电解槽结构

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5254233A (en) * 1990-02-15 1993-10-19 Asahi Glass Company Ltd. Monopolar ion exchange membrane electrolytic cell assembly
US5221452A (en) * 1990-02-15 1993-06-22 Asahi Glass Company Ltd. Monopolar ion exchange membrane electrolytic cell assembly
KR100510093B1 (ko) * 2003-04-23 2005-08-24 한창용 물의 전기분해를 위한 음극 및 그를 포함하는 전해조
ITMI20031269A1 (it) * 2003-06-24 2004-12-25 De Nora Elettrodi Spa Nuovo anodo espandibile per celle a diaframma.
EP1685819A1 (en) * 2005-01-26 2006-08-02 Ciar S.P.A. Massage device
WO2013185163A1 (en) 2012-06-12 2013-12-19 Monash University Breathable electrode and method for use iν water splitting
CA2919372A1 (en) 2013-07-31 2015-02-05 Aquahydrex Pty Ltd Electro-synthetic or electro-energy cell with gas diffusion electrode(s)
US20220145479A1 (en) 2019-02-01 2022-05-12 Aquahydrex, Inc. Electrochemical system with confined electrolyte

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138295A (en) * 1976-12-23 1979-02-06 Diamond Shamrock Technologies S.A. Process and apparatus for downward recycling of the electrolyte in diaphragm cells
FR2516945A1 (fr) * 1981-11-24 1983-05-27 Chlorine Eng Corp Ltd Cellule electrolytique pour procede utilisant une membrane echangeuse d'ions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940328A (en) * 1974-04-11 1976-02-24 Electronor Corporation Reconstructed or repaired electrode structure
JPS51119681A (en) * 1975-04-15 1976-10-20 Asahi Glass Co Ltd A cell frame for an electrolizer
GB1595183A (en) * 1977-03-04 1981-08-12 Ici Ltd Diaphragm cell
GB1595193A (en) * 1977-03-04 1981-08-12 Ici Ltd Diaphragm cell
DE3223701A1 (de) * 1982-06-25 1983-12-29 Metallgesellschaft Ag, 6000 Frankfurt Membran-elektrolysezelle mit vertikal angeordneten elektroden
JPS599185A (ja) * 1982-07-06 1984-01-18 Asahi Chem Ind Co Ltd イオン交換膜法電解槽
DE3228884A1 (de) * 1982-08-03 1984-02-09 Metallgesellschaft Ag, 6000 Frankfurt Vertikal angeordnete plattenelektrode fuer gasbildende elektrolyseure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4138295A (en) * 1976-12-23 1979-02-06 Diamond Shamrock Technologies S.A. Process and apparatus for downward recycling of the electrolyte in diaphragm cells
FR2516945A1 (fr) * 1981-11-24 1983-05-27 Chlorine Eng Corp Ltd Cellule electrolytique pour procede utilisant une membrane echangeuse d'ions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114807972A (zh) * 2022-05-27 2022-07-29 广东卡沃罗氢科技有限公司 一种电解纯水制氢用的电解槽结构

Also Published As

Publication number Publication date
US4936972A (en) 1990-06-26
DE3808495C2 (nl) 1990-12-20
JPH0238589A (ja) 1990-02-07
BR8901193A (pt) 1989-10-31
DE3808495A1 (de) 1989-09-28

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