EP0035131B1 - Gasentwickelnde Metallelektrode für elektrochemische Prozesse - Google Patents

Gasentwickelnde Metallelektrode für elektrochemische Prozesse Download PDF

Info

Publication number
EP0035131B1
EP0035131B1 EP81100858A EP81100858A EP0035131B1 EP 0035131 B1 EP0035131 B1 EP 0035131B1 EP 81100858 A EP81100858 A EP 81100858A EP 81100858 A EP81100858 A EP 81100858A EP 0035131 B1 EP0035131 B1 EP 0035131B1
Authority
EP
European Patent Office
Prior art keywords
rods
rectangle
plane
anode
cross
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.)
Expired
Application number
EP81100858A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0035131A1 (de
Inventor
Hans-Carl Rathjen
Konrad Dipl.-Chem. Koziol
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.)
De Nora Deutschland GmbH
Original Assignee
Conradty GmbH and Co Metallelektroden KG
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 Conradty GmbH and Co Metallelektroden KG filed Critical Conradty GmbH and Co Metallelektroden KG
Priority to AT81100858T priority Critical patent/ATE13912T1/de
Publication of EP0035131A1 publication Critical patent/EP0035131A1/de
Application granted granted Critical
Publication of EP0035131B1 publication Critical patent/EP0035131B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to a gas-developing metal electrode for electrochemical processes, in particular coated titanium anode for amalgam cells, consisting of rods arranged in a horizontal plane at a distance from one another and parallel to one another, the surfaces of which form the working surface of the electrode and which have a cross section, the extent of which is vertical to the plane is larger than parallel to it.
  • Gas-evolving, horizontally arranged metal electrodes usually the anode, to which a counter electrode, also horizontally arranged, and the cathode, is arranged, must meet several criteria.
  • the first criterion is the requirement to remove the gas developed at the anode as quickly as possible.
  • the anode must have a free area in the horizontal arrangement plane, ie interruptions or the like, through which the gas developing on the underside of the anode can escape upwards.
  • This free area of the anode should be as large as possible. Based on experience, this free area should be 2: approx. 33% of the projected area of the anode, which is formed by the length times the width of the area occupied by the anode in the horizontal plane.
  • edges such as. B. rectangular or triangular profiles
  • the second criterion is therefore the measure to use a bar profile that has no sharp edges. Taking this condition into account, too, one has switched to bars with a circular cross section.
  • the proportion of the area of the anode that runs parallel to the cathode should be as small as possible so that the free area for discharging the gas is as large as possible, a proportion of the working area must extend perpendicular to the plane of the anode. Based on experience, the difference between the closest and furthest point of the working surface with respect to the cathode should be a maximum of 2.0 mm. In this area, therefore, the coating on the carrier, i. H. the rods or the like may be applied.
  • Another criterion is that the proportion of the working area of the anode, which from the point of view of the cathode lies in the current shadow, should be as small as possible.
  • the radius of the round bars must be taken into account as a further limit value for the portion of the working surface which runs perpendicular to the anode plane.
  • GB-A-1 068 992, Fig. 4b shows a relevant anode made of U-shaped profile plates.
  • this anode is based on the task of improving the gas removal due to the largest possible free area, it is necessary to arrange the profile plates relatively close to one another in order to achieve a high current density, because the cross section of the individual profile plates is relatively small due to the desired small width , whereby the gas removal is deteriorated again.
  • rods each have a full cross section with the shape of an oval, which is composed of a rectangle, the broad side of which runs parallel to the plane, and two segments, whose chord length corresponds to the broad side of the rectangle and which each connect with a chord to a broad side of the rectangle.
  • the inventive design of the rods with a cross section in the manner of an oval ensures an increase in the distance between the individual rods and thus an increase in the free area of the anode with the result of an improved discharge of the gas generated at the anode during operation compared to anodes with round rods.
  • the anode according to the invention is therefore particularly suitable for amalgam cells working with relatively high currents and thus high current densities, since the gas evolution which is likewise increased at increased current densities can be controlled.
  • the proportion of the working surface running perpendicular to the arrangement plane of the rods is simultaneously increased in comparison with the round rods, and the proportion of the working surface lying in the current shadow from the point of view of the cathode is also reduced.
  • the design of the rods according to the invention has the advantage that they have no edges of this type which cause increased wear on the coating.
  • the cross section according to the invention can be easily, starting from a round material, for. B. by a drawing or rolling process.
  • the segment of the cross section of the bars is a circular segment.
  • the round material only has to be flattened on two opposite sides.
  • the metal electrode according to the invention consists of rods 1 arranged in a horizontal plane at a distance from one another and parallel to one another. These rods 1 are connected both mechanically and electrically to current supply rails 2 which are spaced apart and parallel to one another and perpendicular to the bars are arranged on the top.
  • the power supply rails 2 are either directly or via cross rails 3 with a power supply bolt 4 electrically conductive and optionally also mechanically connected.
  • the cross-section of the rods 1 and their arrangement in the horizontal arrangement plane best result from FIG. 2.
  • the cross-section of the rods 1 consists of a rectangle 1a, the height h R of which is perpendicular to the arrangement plane of the rods, and two segments 1b composed, whose chord corresponds to the width of the rectangle and which join with their chord on the respective broad side of the rectangle 1a.
  • the segments 1b are preferably circular segments with a radius r.
  • the rods 1 have a rod width s and are arranged at a distance of a gap width sp from one another.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Inert Electrodes (AREA)
EP81100858A 1980-03-03 1981-02-06 Gasentwickelnde Metallelektrode für elektrochemische Prozesse Expired EP0035131B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100858T ATE13912T1 (de) 1980-03-03 1981-02-06 Gasentwickelnde metallelektrode fuer elektrochemische prozesse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3008116 1980-03-03
DE19803008116 DE3008116A1 (de) 1980-03-03 1980-03-03 Gasentwickelnde metallelektrode fuer elektrochemische prozesse

Publications (2)

Publication Number Publication Date
EP0035131A1 EP0035131A1 (de) 1981-09-09
EP0035131B1 true EP0035131B1 (de) 1985-06-19

Family

ID=6096135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100858A Expired EP0035131B1 (de) 1980-03-03 1981-02-06 Gasentwickelnde Metallelektrode für elektrochemische Prozesse

Country Status (6)

Country Link
US (1) US4379742A (ja)
EP (1) EP0035131B1 (ja)
JP (1) JPS6045277B2 (ja)
AT (1) ATE13912T1 (ja)
DE (2) DE3008116A1 (ja)
SG (1) SG73685G (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345530A1 (de) * 1983-07-13 1985-06-27 Basf Ag, 6700 Ludwigshafen Gasentwickelnde metallelektrode fuer elektrolysezellen
DE3406777C2 (de) * 1984-02-24 1985-12-19 Conradty GmbH & Co Metallelektroden KG, 8505 Röthenbach Beschichtete Ventilmetallanode zur elektrolytischen Gewinnung von Metallen oder Metalloxiden
DE3626206A1 (de) * 1986-08-01 1988-02-04 Conradty Metallelek Stromzuleitung fuer elektroden
US5087344A (en) * 1990-09-26 1992-02-11 Heraeus Elektroden Gmbh Electrolysis cell for gas-evolving electrolytic processes
DE4419277C2 (de) * 1994-06-01 1998-07-02 Heraeus Elektrochemie Elektrolysezellen-Elektrode
US5849164A (en) * 1996-06-27 1998-12-15 Eltech Systems Corporation Cell with blade electrodes and recirculation chamber
CA2450071A1 (en) * 2001-07-13 2003-01-23 Moltech Invent S.A. Alloy-based anode structures for aluminium production
US20100147231A1 (en) * 2005-04-15 2010-06-17 Timothy Donald Bogers Electrolytic Cell for an Internal Combustion Engine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3409533A (en) * 1964-03-23 1968-11-05 Asahi Chemical Ind Mercury-method cell for alkali chloride electrolysis
GB1068992A (en) * 1964-03-31 1967-05-17 Asahi Chemical Ind Anode assembly
US3507771A (en) * 1966-09-30 1970-04-21 Hoechst Ag Metal anode for electrolytic cells
DE2135873B2 (de) * 1971-07-17 1980-05-14 Conradty Gmbh & Co Metallelektroden Kg, 8505 Roethenbach Zellenoberteil für Amalgamhochlastzellen
DE2323497B2 (de) * 1973-05-10 1978-10-12 C. Conradty Nuernberg Gmbh & Co Kg, 8505 Roethenbach Beschichtete Titananode für Amalgamhochlastzellen
US4022679A (en) * 1973-05-10 1977-05-10 C. Conradty Coated titanium anode for amalgam heavy duty cells
US4033847A (en) * 1973-11-05 1977-07-05 Olin Corporation Metal anode assembly
US3953316A (en) * 1973-11-05 1976-04-27 Olin Corporation Metal anode assembly
DE2721958A1 (de) * 1977-05-14 1978-11-16 Hoechst Ag Metallelektrode fuer elektrolyseapparate zum elektrolytischen herstellen von chlor

Also Published As

Publication number Publication date
JPS6045277B2 (ja) 1985-10-08
EP0035131A1 (de) 1981-09-09
SG73685G (en) 1986-11-21
DE3008116A1 (de) 1981-09-17
JPS56136986A (en) 1981-10-26
US4379742A (en) 1983-04-12
ATE13912T1 (de) 1985-07-15
DE3170971D1 (en) 1985-07-25

Similar Documents

Publication Publication Date Title
DE2948579C2 (ja)
DE2823556A1 (de) Elektrolysezellen-reihe aus einer vielzahl von elektrolysezellen-einheiten
DD243516A5 (de) Monopolare und bipolara chlorzellen und elektrodenstrukturen fuer diese
DE2262173C3 (ja)
DE2832664A1 (de) Elektrolysezelle fuer die elektrolyse von meerwasser
EP0095039B1 (de) Membran-Elektrolysezelle
DE4306889C1 (de) Elektrodenanordnung für gasbildende elektrolytische Prozesse in Membran-Zellen und deren Verwendung
EP0035131B1 (de) Gasentwickelnde Metallelektrode für elektrochemische Prozesse
DE2135873B2 (de) Zellenoberteil für Amalgamhochlastzellen
DE2059868B2 (de) Vertikal anzuordnende Elektrodenplatte für eine gasbildende Elektrolyse
DE2923818C2 (ja)
DE2845832A1 (de) Vorrichtung zur diaphragma-elektrolyse
EP0051764B1 (de) Salzsäure-Elektrolysezelle zur Herstellung von Chlor und Wasserstoff
EP0479840A1 (de) Elektrolysezelle für gasentwickelnde elektrolytische prozesse.
EP0135687B1 (de) Gasentwickelnde Metallelektrode
DE3017006A1 (de) Elektrolyseverfahren und elektrolysegeraet
DE1467075B2 (de) Anode zur elektrolytischen Herstellung von Chlor
DE2949495A1 (de) Elektrode fuer elektrolysezellen
DE3005795C2 (de) Beschichtete Metallanode zur elektrolytischen Gewinnung von Metallen
DE8005769U1 (de) Gasentwickelnde metallelektrode fuer elektrochemische prozesse
EP0685576A1 (de) Elektrode für Elektrolysezelle
EP0033714A2 (de) Schienenanordnung für Elektrolysezellen
DE1271093C2 (de) Metallanode fuer elektrolysezellen
DE2323497B2 (de) Beschichtete Titananode für Amalgamhochlastzellen
DE1467075C (de) Anode zur elektrolytischen Herstellung von Chlor

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT NL

ITCL It: translation for ep claims filed

Representative=s name: BARZANO' E ZANARDO ROMA S.P.A.

17P Request for examination filed

Effective date: 19811026

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO MILANO S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI NL

REF Corresponds to:

Ref document number: 13912

Country of ref document: AT

Date of ref document: 19850715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3170971

Country of ref document: DE

Date of ref document: 19850725

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: CONRADTY G.M.B.H. & CO. METALLELEKTRODEN K.G.

Effective date: 19880228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19890228

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: HERAEUS ELEKTRODEN GMBH

ITPR It: changes in ownership of a european patent

Owner name: CESSIONE;HERAEUS ELEKTRODEN GMBH

NLS Nl: assignments of ep-patents

Owner name: HERAEUS ELEKTRODEN GMBH TE FREIGERICHT, BONDSREPUB

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900126

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900131

Year of fee payment: 10

Ref country code: AT

Payment date: 19900131

Year of fee payment: 10

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900226

Year of fee payment: 10

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19900228

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19900504

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910206

Ref country code: AT

Effective date: 19910206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910228

Ref country code: CH

Effective date: 19910228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19910901

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19911031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19911101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST