DE542233C - Anode plate to be installed horizontally in cells for aqueous electrolysis - Google Patents

Anode plate to be installed horizontally in cells for aqueous electrolysis

Info

Publication number
DE542233C
DE542233C DEC40028D DEC0040028D DE542233C DE 542233 C DE542233 C DE 542233C DE C40028 D DEC40028 D DE C40028D DE C0040028 D DEC0040028 D DE C0040028D DE 542233 C DE542233 C DE 542233C
Authority
DE
Germany
Prior art keywords
plate
cells
anode plate
installed horizontally
aqueous electrolysis
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
DEC40028D
Other languages
German (de)
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.)
C Conradty Nuernberg GmbH and Co KG
Original Assignee
C Conradty Nuernberg GmbH and Co 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.)
Publication date
Priority to DEC40028D priority Critical patent/DE542233C/en
Priority claimed from GB3491/31A external-priority patent/GB365815A/en
Application granted granted Critical
Publication of DE542233C publication Critical patent/DE542233C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B11/00Electrodes; Manufacture thereof not otherwise provided for
    • C25B11/02Electrodes; Manufacture thereof not otherwise provided for characterised by shape or form
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60Constructional parts of cells
    • C25B9/65Means for supplying current; Electrode connections; Electric inter-cell connections

Landscapes

  • 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)

Description

in Zellen für wässerige Elektrolyse horizontal einzubauende Anodenplatte Bisher wurden für die Elektrolyse meist Elektroden in Plattenform verwendet, die mittels Stäbe in das Bad gehalten werden; diese Stäbe sind zugleich Stromzuführung. Die Verbindung von Stäben und Platten. erfolgt mittels Nippel und Gewinde. Beim Elektrolysevorgang wird nun das Gewinde zwischen Platte und Nippel infolge der an diesen Stellen herrschenden hohen Stromdichte und der sich dort entwickelnden Teilelektrolysevorgänge sehr oft angegriffen und zerstört, so daß die unter Umständen selbst noch ganz wenig angegriffene Platte abfällt und die stromführende Fläche des ganzen Bades verkleinert wird. Bestenfalls muß das Bad geöffnet und, wenn die Platte dies noch aushält, mit neuem Gewinde versehen. wieder eingesetzt werden. Auch der Zuführungsstab für die Platte ist durch Zerstörung des Gewindes unbrauchbar geworden. Aber selbst wenn die Gewinde nicht vorzeitig zerstört werden sollten, ist doch der verwertbare Teil der Graphitplatte nur sehr gering, denn bei einer Plattenstärke von 5o mm, die als normal angesehen werden kann, können höchstens 25 nun abgearbeitet werden, weil sonst eben das Gewinde in der Platte wieder zu sehr geschwächt wird und die Platte abfällt. Dies bedeutet eine nur 5o%ige Ausnutzung des teueren Graphits.Anode plate to be installed horizontally in cells for aqueous electrolysis So far, electrodes in plate form have usually been used for electrolysis, which are held in the bath by means of rods; these rods are also the power supply. The connection of bars and plates. takes place by means of a nipple and thread. During the electrolysis process, the thread between the plate and the nipple is very often attacked and destroyed as a result of the high current density prevailing at these points and the partial electrolysis processes that develop there, so that the plate, which may still be very slightly attacked, falls off and the current-carrying area of the entire bath is reduced will. At best, the bath must be opened and, if the plate can withstand this, re-threaded. to be reinstated. The feed rod for the plate has also become unusable due to the destruction of the thread. But even if the thread should not be destroyed prematurely, the usable part of the graphite plate is only very small, because with a plate thickness of 50 mm, which can be regarded as normal, a maximum of 25 can now be processed, because otherwise the thread in the plate is weakened too much again and the plate falls off. This means only 50% utilization of the expensive graphite.

Diesem übelstand abzuhelfen, soll nun die Platte eine Form gemäß beiliegender Skizze oder ähnlich besitzen, d. h. die Platte soll in ihrer Längs- oder Querrichtung mit einer Rippe A oder einem Fuß B versehen sein, der bestimmt ist, aus der Elektrolyseflüssigkeit herauszuschauen, die Gewinde für die Zuführung aufzunehmen, um dadurch ein Abarbeiten der Gewinde zu vermeiden. Da diese Zuführungen dann nicht in die ElektroIytflüssigkeit eintauchen, ist eine Zerstörung dieser Gewinde unmöglich, die Platte kann also unbegrenzt, d. h. bis zur vollkommenen Abnutzung ihrer Basis im Bad verbleiben, wird also zum allergrößten Teil produktiv ausgenutzt, anstatt wie bisher 5o % Abfall zu ergeben. Neben der restlosen Abnutzung des Plattengraphits wird auch an Zuführungen, die dadurch theoretisch unbegrenzt halten, gespart. Dabeiist stets die Stromleitfläche, in cm= ausgedrückt, annähernd gleich geblieben, denn Längen= und Breitenabmessungen sind der Abnutzung weniger unterworfen wie die Grundflächenhöhenabnutzung. Es wird dadurch erreicht, daß die Badspannung fast während der ganzen Lebensdauer ziemlich gleichbleibt, schon deshalb, weil Ausfälle ganzer Platten durch. Abbrechen vermieden sind. in der Hauptsache aber, weil die Kontaktfläche zwischen Platte und Nippel gleichbleibt bis zur völligen Aufzehrung des Graphits. Bleibt aber die Badspannung gleich, d. h. also auch die ungefähre Stromdichte pro cm=, so wird nochmals eine Erhöhung der Lebensdauer des Graphits damit erzielt, denn es ist eine bekannte Sache, daß mit der höheren Badspannung, also praktisch der höheren Stromdichte, die Abnutzung des Graphits steigt, da, wie jeder Fachmann aus der Praxis weiß, der prozentuale Graphitverbrauch in der zweiten Hälfte des Verbrauchsprozesses, also dann, wenn die Badspannung anfängt, merklich zu steigen, rapid zunimmt.To remedy this inconvenience, the plate should now have a shape according to the accompanying sketch or similar, ie the plate should be provided in its longitudinal or transverse direction with a rib A or a foot B , which is intended to look out of the electrolysis liquid, the thread for take up the feed in order to avoid the thread being worked off. Since these feeds are not immersed in the electrolyte liquid, it is impossible to destroy these threads, so the plate can remain in the bath indefinitely, i.e. until its base is completely worn out, so it is largely used productively instead of producing 50% waste as before . In addition to the complete wear and tear of the plate graphite, there is also a saving in feeds, which theoretically hold indefinitely. The current conducting surface, expressed in cm =, has always remained approximately the same, because length and width dimensions are less subject to wear than the base surface height wear. It is achieved by the fact that the bath voltage remains pretty much the same throughout its entire service life, if only because entire plates fail. Cancel are avoided. but mainly because the contact area between the plate and the nipple remains the same until the graphite is completely consumed. If, however, the bath voltage remains the same, i.e. also the approximate current density per cm =, then the service life of the graphite is increased again, because it is a well-known fact that with the higher bath voltage, i.e. practically the higher current density, the wear and tear of the Graphite increases because, as every expert knows from practice, the percentage graphite consumption increases rapidly in the second half of the consumption process, i.e. when the bath voltage begins to increase noticeably.

Die beschriebene Formgebung kann natürlich sinngemäß auch auf Anoden aus allen anderen in Betracht kommenden Materialien angewendet werden, wie z. B. Magnetit.The shape described can of course also be applied to anodes from all other suitable materials are used, such as. B. Magnetite.

Claims (1)

PATENTAN SPRUCIi In Zellen für wässerige Elektrolyse horizontal einzubauende Anodenplatte, dadurch gekennzeichnet, daß sie an der Oberseite mit einem Fuß, einer Rippe oder sonstigen Erhöhungen versehen ist, die die Anbringung der Stromzuführung außerhalb des Elektrolyten ermöglicht.PATENTAN SPRUCIi To be installed horizontally in cells for aqueous electrolysis Anode plate, characterized in that it has a foot, a Rib or other elevations are provided, which allow the attachment of the power supply outside of the electrolyte allows.
DEC40028D 1931-02-03 Anode plate to be installed horizontally in cells for aqueous electrolysis Expired DE542233C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC40028D DE542233C (en) 1931-02-03 Anode plate to be installed horizontally in cells for aqueous electrolysis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEC40028D DE542233C (en) 1931-02-03 Anode plate to be installed horizontally in cells for aqueous electrolysis
GB3491/31A GB365815A (en) 1931-02-03 1931-02-03 Improvements in or relating to anodes for electrolysis

Publications (1)

Publication Number Publication Date
DE542233C true DE542233C (en) 1932-01-21

Family

ID=25970287

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC40028D Expired DE542233C (en) 1931-02-03 Anode plate to be installed horizontally in cells for aqueous electrolysis

Country Status (1)

Country Link
DE (1) DE542233C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE935602C (en) * 1951-08-11 1955-11-24 Huels Chemische Werke Ag Electrodes for electrolytic cells
EP0017188A1 (en) * 1979-04-10 1980-10-15 Bayer Ag Anode for the alkali chloride electrolysis and process for the manufacture of chlorine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE935602C (en) * 1951-08-11 1955-11-24 Huels Chemische Werke Ag Electrodes for electrolytic cells
EP0017188A1 (en) * 1979-04-10 1980-10-15 Bayer Ag Anode for the alkali chloride electrolysis and process for the manufacture of chlorine

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