EP0068076A2 - Monitoring and control device for chloroalcali electrolytic cells with mercury cathode - Google Patents
Monitoring and control device for chloroalcali electrolytic cells with mercury cathode Download PDFInfo
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- EP0068076A2 EP0068076A2 EP82102107A EP82102107A EP0068076A2 EP 0068076 A2 EP0068076 A2 EP 0068076A2 EP 82102107 A EP82102107 A EP 82102107A EP 82102107 A EP82102107 A EP 82102107A EP 0068076 A2 EP0068076 A2 EP 0068076A2
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 5
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract 2
- 239000003513 alkali Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000497 Amalgam Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
- C25B15/00—Operating or servicing cells
- C25B15/04—Regulation of the inter-electrode distance
Definitions
- Amalgam process is heavily burdened by labor costs and energy g y p g reisstei chan g es and not least by high requirements of environmental protection and should therefore be further optimized.
- DSA anodes in conjunction with the monitoring and control device described below can be regarded as an ideal combination.
- the monitoring and control device consciously dispenses with fully automatic monitoring and control carried out by a central computer.
- the monitoring and control system is intended to enable the cell personnel to operate the electrolysis cells with the lowest possible cell voltage with a high current yield, low damage rate at DSA anodes and without a great deal of work.
- DSA dimensionally stable anodes
- the monitoring and control device is housed in an insulating material housing and is used to monitor and control a single electrolysis cell.
- the electronics are housed in the upper part of the housing.
- the housing is closed by a transparent cover.
- the signal and control elements are located in the lower part of the cover.
- input plug-in cards are accommodated in the plug-in card slots.
- Each plug-in card has space for two input channels, which are potentially separated from the mains as well as from the outputs.
- a highly reliable input amplifier with low drift values amplifies the input signal from the supply rails in the order of 5 - 6 mV to a thousand times the value. This voltage is converted into a proportional frequency via an analog-digital conversion, which is fed to a digital-analog converter via an optocoupler.
- the overall ratio is 1: 1. This measure ensures the necessary electrical isolation between the input circuits and the processing circuit.
- Each input plug-in card has two power supplies, so that each input channel is supplied independently and electrically separately from the other. This is to be understood as a precautionary measure, because all measuring points within a cell cannot have more than 4 - 5 V voltage difference.
- the choice of an optocoupler as a transmission element avoids the magnetic influence that can be influenced by external fields, as occurs in electrolysis systems.
- the AC voltage coupling has the advantage that the optocoupler can be easily monitored. Even in the event that the optocoupler continuously switches through or interrupts, this fault is immediately displayed on the plug-in card by zero voltage monitoring.
- Each input plug-in card has a defelct display for each channel.
- All outputs are added in a further plug-in card and averaged so that the output signal corresponds to the arithmetic mean of the input signals.
- This mean value amplifier can be set to the number of outputs using a switch on the plug-in card.
- the corresponding input signals from the supply rails are compared with the mean value according to the number of group adjustment units above the electrolysis cell, and the result is fed to an evaluation circuit.
- the evaluation circuit compares the individual value with the mean value. If an adjustable percentage tolerance limit above the mean value is exceeded, the device controls the motors of the respective group adjustment unit. The motors raise the anode adjustment device by an adjustable distance. This process is repeated automatically in the event that the overcurrent has not yet been eliminated after an adjustable pause time until the current consumption of the supply rail is within the tolerated size.
- This process also triggers an optical and acoustic alarm signal.
- the response of the monitoring circuit is stored until the optical signal is manually deleted.
- a suitable connection to the cathode of the cell is also routed through an isolation amplifier and displayed on a digital instrument. This means that the operating voltage of the cell can be read on the device at any time.
- the voltage supply for the contactor control which is secured by special locking circuits with the operating loads even in the event of failure of electronic switching elements such as transistors or the like, is combined with the isolating amplifier of the cell operating voltage on a common plug-in card.
- the contactors are encapsulated in sheet steel housings.
- the cell voltage and the average target current consumption of the individual supply rails can be read on the digital displays.
- the actual current consumption of the individual supply rails can now be queried on the device.
- the inclination of the frame can now be changed in manual operation by controlling the servomotors on the anode holding frame, so that the current distribution is corrected over the length of the frame. If this measure is not sufficient, the current consumption of the individual power supplies must be checked using a current clamp and adjusted individually.
- the anode frames can each be lowered overall in adjustable steps by means of buttons on the device and the cell can thus be brought to operating voltage.
- the device automatically blocks during the set pause times and thus prevents the anodes from dropping too quickly.
- the device monitors the current consumption of the individual supply rails and blocks when the set maximum percentage deviation from the arithmetic mean value of the total current consumption is reached, so that the anodes cannot run the risk of a short circuit.
- the electrolytic cell has a cell trough 6 and a cell cover 9. On the cell cover 9 supports 14 are attached, which carry a frame 11 which serves to adjust the anodes 8.
- the flowing mercury cathode in the cell trough 6 is designated by 7. Otherwise, the cell structure is known per se.
- the monitoring and control device 1 is connected to the supply rail 4 by a measuring line 2, via a shunt tap or measuring section 2 '.
- the feeder rail or busbar 4 is electrically conductively but flexibly connected to the individual anodes 8 by a current supply band 5.
- the anodes 8 are known per se, e.g. B. arranged in a sleeve power supply bolts, which in turn are provided with adjusting screws 10 for individual adjustment relative to the frame 11.
- a lifting gear is designated, which is driven by an electric gear motor 13, for. B. on the illustrated horizontal shaft, so d ate in the manner of a bevel gear drive, the support frame 11 for the anodes 8 overall on the columns 14 is movable up and down, as indicated by arrows.
- the lines and the fastening elements for the lines to the anodes are advantageously made from the same material as the current rails. Temperature compensation elements are also provided in order to compensate for temperature differences in the individual supply rails.
- the measuring part can also be designed as a single device, so that a cell that has no motorized adjustment can be readjusted manually.
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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 Metals (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
Der Betrieb von Chloralkalielektrolysezellen nach demOperation of chlor-alkali electrolytic cells after the
Amalgamverfahren wird durch Lohnkosten- und Ener- giepreissteigerungen und nicht zuletzt durch hohe Anforderungen des Umweltschutzes stark belastet und sollte deshalb weiter optimiert werden.Amalgam process is heavily burdened by labor costs and energy g y p g reisstei chan g es and not least by high requirements of environmental protection and should therefore be further optimized.
Es ist schon heute absehbar, daß die Amalgamzellentechnologie langfristig durch neue Verfahren wie z. B. die Membranzellentechnologie abgelöst wird, so daß der Investitionsaufwand für die Optimierung bestehender Anlagen möglichst gering gehalten werden muß.It is already foreseeable today that amalgam cell technology will be able to use new methods such as B. the membrane cell technology is replaced, so that the investment for the optimization of existing systems must be kept as low as possible.
Die Verwendung von DSA-Anoden in Verbindung mit der nachfolgend beschriebenen Überwachungs- und Steuerungseinrichtung kann als ideale Kombination angesehen werden.The use of DSA anodes in conjunction with the monitoring and control device described below can be regarded as an ideal combination.
Die Überwachungs- und Steuerungseinrichtung verzichtet bewußt auf vollautomatische, durch zentralen Rechner durchgeführte Überwachung und Steuerung.The monitoring and control device consciously dispenses with fully automatic monitoring and control carried out by a central computer.
Das Überwachungs- und Steuerungssystem soll bei geringem Investitionsaufwand das Zellenpersonal in die Lage versetzen, die Elektrolysezellen mit möglichst geringer Zellenspannung bei hoher Stromausbeute, geringer Schadensrate an DSA-Anoden und ohne großen Arbeitsaufwand zu betreiben. (DSA = dimensionsstabile Anoden)The monitoring and control system is intended to enable the cell personnel to operate the electrolysis cells with the lowest possible cell voltage with a high current yield, low damage rate at DSA anodes and without a great deal of work. (DSA = dimensionally stable anodes)
Die Überwachungs- und Steuerungseinrichtung wird in einem Isolierstoffgehäuse untergebracht und dient zur Überwachung und Steuerung einer einzelnen Elektrolysezelle. Im oberen Teil des Gehäuses ist die Elektronik untergebracht.The monitoring and control device is housed in an insulating material housing and is used to monitor and control a single electrolysis cell. The electronics are housed in the upper part of the housing.
Darunter befinden sich die beiden digitalen Meßanzeigen für die Zellen-Gesamtspannung und die einzelnen Ströme in den Zuleitungsschienen. Im unteren Teil des Gehäuses sind die Ausgangsschütze für die Stellmotore zusammengefaßt.Below are the two digital measuring displays for the total cell voltage and the individual currents in the supply rails. The output contactors for the servomotors are combined in the lower part of the housing.
Zusätzlich besteht Platz für die Verbindungsleitungen vom Meßteil zum Steuerungsteil und den äußeren Einbausteckverbindern. Das Gehäuse ist durch einen Klarsichtdeckel verschlossen.There is also space for the connecting cables from the measuring section to the control section and the external built-in connectors. The housing is closed by a transparent cover.
Sämtliche Anschlüsse werden über Mehrfach-Steckverbinder vorgenommen, so daß eine leichte Austauschbarkeit von Einzelbauteilen oder des Gesamtgerätes gewährleistet ist. Im Unteren Teil des Deckels sind die Signal- und Bedienungselemente untergebracht.All connections are made via multiple connectors, so that easy replacement of individual components or the entire device is guaranteed. The signal and control elements are located in the lower part of the cover.
Wegen der möglichen agressiven Atmosphäre werden metallische Teile an der Oberfläche des Gehäuses bzw. der Stecker weitgehend vermieden.Because of the possible aggressive atmosphere, metallic parts on the surface of the housing or the plug are largely avoided.
Auf den Steckkartenplätzen werden je nach Anzahl der Zuleitungsschienen Eingangssteckkarten untergebracht. Jede Steckkarte bietet Platz für zwei Eingangskanäle, die potentialmäßig sowohl vom Netz als auch von den Ausgängen getrennt sind. Ein hochzuverlässiger Eingangsverstärker mit niedrigen Driftwerten verstärkt das von den Zuleitungsschienen herrührende Eingangssignal in der Größenordnung 5 - 6 mV auf den tausendfachen Wert. Diese Spannung wird über eine Analog-Digitalumsetzung in eine proportionale Frequenz umgesetzt, die über einen Optokoppler einem Digital-Analogwandler zugeführt wird. Die Gesamtübersetzung ist 1:1. Durch diese Maßnahme ist die notwendige Potentialtrennung zwischen den Eingangskreisen und dem Verarbeitungskreis gewährleistet. Jede Eingangssteckkarte hat zwei Stromversorgungen, so daß jeder Eingangskanal unabhängig und elektrisch getrennt vom anderen versorgt wird. Dies ist als reine Vorsichtsmaßnahme zu verstehen, weil alle Meßpunkte innerhalb einer Zelle nicht mehr als 4 - 5 V Spannungsunterschied haben können.Depending on the number of supply rails, input plug-in cards are accommodated in the plug-in card slots. Each plug-in card has space for two input channels, which are potentially separated from the mains as well as from the outputs. A highly reliable input amplifier with low drift values amplifies the input signal from the supply rails in the order of 5 - 6 mV to a thousand times the value. This voltage is converted into a proportional frequency via an analog-digital conversion, which is fed to a digital-analog converter via an optocoupler. The overall ratio is 1: 1. This measure ensures the necessary electrical isolation between the input circuits and the processing circuit. Each input plug-in card has two power supplies, so that each input channel is supplied independently and electrically separately from the other. This is to be understood as a precautionary measure, because all measuring points within a cell cannot have more than 4 - 5 V voltage difference.
Zusätzlich wird durch die Wahl eines Optokopplers als Übertragungsglied die magnetische Beeinflußbarkeit durch Fremdfelder, wie sie bei Elektrolyseanlagen auftreten, vermieden. Durch die Wechselspannungskopplung ergibt sich der Vorteil, daß der Optokoppler einfach überwacht werden kann. Selbst für den Fall, daß der Optokoppler dauernd durchschaltet oder unterbricht, wird durch eine Nullspannungsüberwachung dieser Fehler sofort auf der Steckkarte angezeigt.In addition, the choice of an optocoupler as a transmission element avoids the magnetic influence that can be influenced by external fields, as occurs in electrolysis systems. The AC voltage coupling has the advantage that the optocoupler can be easily monitored. Even in the event that the optocoupler continuously switches through or interrupts, this fault is immediately displayed on the plug-in card by zero voltage monitoring.
Jede Eingangssteckkarte hat für jeden Kanal eine Defelctanzeige.Each input plug-in card has a defelct display for each channel.
Alle Ausgänge werden in einer weiteren Steckkarte addiert und so gemittelt, daß das Ausgangssignal dem arithmetischen Mittelwert der Eingangssignale entspricht. Durch einen Umschalter auf der Steckkarte kann dieser Mittelwertverstärker auf die Anzahl der Ausgänge eingestellt werden. In einem anderen Teil der Karte werden entsprechend der Anzahl der Gruppenverstelleinheiten über der Elektrolysezelle die zugehörigen Eingangssignale von den Zuleitungsschienen mit dem Mittelwert verglichen und das Ergebnis einer Auswerteschaltung zugeführt. Die Auswerteschaltung vergleicht den Einzelwert mit dem Mittelwert. Bei Überschreitung einer einstellbaren prozentualen Toleranzgrenze über dem Mittelwert steuert das Gerät die Motoren der jeweiligen Gruppenverstelleinheit an. Die Motoren heben die Anodenverstelleinrichtung um eine einstellbare Strecke. Dieser Vorgang wiederholt sich automatisch für den Fall, daß der Überstrom noch nicht beseitigt ist nach einer einstellbaren Pausenzeit, bis die Stromaufnahme der Zuleitungsschiene innerhalb der tolerierten Größe liegt.All outputs are added in a further plug-in card and averaged so that the output signal corresponds to the arithmetic mean of the input signals. This mean value amplifier can be set to the number of outputs using a switch on the plug-in card. In another part of the card, the corresponding input signals from the supply rails are compared with the mean value according to the number of group adjustment units above the electrolysis cell, and the result is fed to an evaluation circuit. The evaluation circuit compares the individual value with the mean value. If an adjustable percentage tolerance limit above the mean value is exceeded, the device controls the motors of the respective group adjustment unit. The motors raise the anode adjustment device by an adjustable distance. This process is repeated automatically in the event that the overcurrent has not yet been eliminated after an adjustable pause time until the current consumption of the supply rail is within the tolerated size.
Dieser Vorgang löst zusätzlich ein optisches und akustisches Alarmsignal aus. Die Reaktion der Überwachungsschaltung wird bis zur manuellen Löschung des optischen Signals gespeichert.This process also triggers an optical and acoustic alarm signal. The response of the monitoring circuit is stored until the optical signal is manually deleted.
Ein geeigneter Anschluß an der Kathode der Zelle wird gleichfalls über einen Trennverstärker geführt und auf einem digitalen Instrument angezeigt. Dadurch ist jederzeit die Betriebsspannung der Zelle am Gerät ablesbar. Die Spannungsversorgung für die Schützsteuerung, die durch spezielle Verriegelungsschaltungen mit den Bedienungslasten auch bei Ausfall von elektronischen Schaltgliedern wie Transistoren o. ä. gesichert ist, ist mit dem Trennverstärker der Zellenbestriebsspannung auf einer gemeinsamen Steckkarte zusammengefaßt. Um den Einfluß von statischen Magnetfeldern abzuschirmen, sind die Schütze in Stahlblechgehäusen gekapselt.A suitable connection to the cathode of the cell is also routed through an isolation amplifier and displayed on a digital instrument. This means that the operating voltage of the cell can be read on the device at any time. The voltage supply for the contactor control, which is secured by special locking circuits with the operating loads even in the event of failure of electronic switching elements such as transistors or the like, is combined with the isolating amplifier of the cell operating voltage on a common plug-in card. To shield the influence of static magnetic fields, the contactors are encapsulated in sheet steel housings.
Nach der Inbetriebnahme der Zelle nach dem anlagenüblichen Verfahren kann am Gerät sofort die Zellenspannung und die mittlere Soll-Stromaufnahme der einzelnen Zuleitungsschienen auf den Digitalanzeigen abgelesen werden.After the cell has been commissioned using the standard system procedure, the cell voltage and the average target current consumption of the individual supply rails can be read on the digital displays.
Bevor die Zelle auf die gewünschte Betriebsspannung gebracht wird, kann jetzt am Gerät die tatsächliche Stromaufnahme der einzelnen Zuleitungsschienen abgefragt werden. Bei Abweichungen über ein bestimmtes Maß hinaus kann jetzt im Hand-Betrieb durch Ansteuerung der Stellmotoren an den Anodenhalterahmen die Neigung der Rahmen verändert werden, so daß die Stromverteilung über die Länge des Rahmens korrigiert wird. Reicht diese Maßnahme nicht aus, müssen die Stromaufnahmen der Einzelstromzuführungen mittels Strommeßzange überprüft und individuell nachgestellt werden.Before the cell is brought to the desired operating voltage, the actual current consumption of the individual supply rails can now be queried on the device. In the event of deviations beyond a certain amount, the inclination of the frame can now be changed in manual operation by controlling the servomotors on the anode holding frame, so that the current distribution is corrected over the length of the frame. If this measure is not sufficient, the current consumption of the individual power supplies must be checked using a current clamp and adjusted individually.
Nach diesen Maßnahmen können die Anodenrahmen jeweils insgesamt mittels Taster am Gerät in einstellbaren Schritten gesenkt und die Zelle so auf Betriebsspannung gebracht werden. Dabei blockiert das Gerät automatisch in den eingestellten Pausezeiten und verhindert so ein zu schnelles Absenken der Anoden.After these measures, the anode frames can each be lowered overall in adjustable steps by means of buttons on the device and the cell can thus be brought to operating voltage. The device automatically blocks during the set pause times and thus prevents the anodes from dropping too quickly.
Gleichzeitig überwacht das Gerät die Stromaufnahme der einzelnen Zuleitungsschienen und blockiert bei Erreichen der eingestellten maximalen prozentualen Abweichung vom arithmetischen Mittelwert der Gesamtstromaufnahme, so daß die Anoden nicht in Kurzschlußgefahr geraten können.At the same time, the device monitors the current consumption of the individual supply rails and blocks when the set maximum percentage deviation from the arithmetic mean value of the total current consumption is reached, so that the anodes cannot run the risk of a short circuit.
Es ist gewährleistet, daß die Stromaufnahme der Einzel-Zuleitungsschiene bei einer auf diese Weise auf gewünschte Spannung gebrachten Zelle keine Abweichung über die eingestellte Toleranz der Stromaufnahme aufweist.It is ensured that the current consumption of the individual supply rail does not deviate from the set tolerance of the current consumption when the cell is brought to the desired voltage in this way.
Für den Fall, daß sich durch Veränderungen der Anodenaufhängungen oder der Kathodengeometrie in einer oder mehreren Zuleitungsschienen Überströme über die eingestellten Toleranzen einstellen, steuert dasIn the event that overcurrents above the set tolerances occur due to changes in the anode suspensions or the cathode geometry in one or more supply rails, this controls
Gerät den oder die Stellmotoren der gesamten Anodengruppe an und hebt diese schrittweise parallel zur Kathode um ein vorher einstellbares Maß an. Ist durch diese automatisch ablaufende Maßnahme der Überstrom beseitigt, zeigt das Gerät bis zur manuellen Quittierung, welche Zuleitungsschiene sich im Überstrombereich befunden hat, so daß das Bedienungspersonal sofort einen Hinweis hat, wo korrigiert werden muß. Nach Beseitigung der Überstrom verursachenden Störquelle kann die Zelle mittels Taster,wie vor beschrieben, wieder auf gewünschte Spannung gebracht werden.Applies the actuator or actuators of the entire anode group and gradually raises them parallel to the cathode by a previously adjustable amount. If the overcurrent is eliminated by this automatically running measure, the device shows until manual acknowledgment which supply rail was in the overcurrent range, so that the operating personnel has an immediate indication of where to correct. After eliminating the interference source causing the overcurrent, the cell can be brought back to the desired voltage by means of a button, as described above.
In der beigefügten Zeichnung ist ein Ausführungsbeispiel der Erfindung rein schematisch dargestellt.In the accompanying drawing, an embodiment of the invention is shown purely schematically.
Die Elektrolysezelle weist einen Zellentrog 6 und einen Zellendeckel 9 auf. Auf dem Zellendeckel 9 sind Auflager 14 befestigt, die einen Rahmen 11 tragen, der der Verstellung der Anoden 8 dient. Mit 7 ist die fließende Quecksilber-Kathode im Zellentrog 6 bezeichnet. Im übrigen ist der Zellenaubau an sich bekannt.The electrolytic cell has a
Die Überwachungs- und Steuerungseinrichtung 1 ist mit einer Meßleitung 2 mit der Zuleitungsschiene 4 verbunden, über einen shunt-Abgriff bzw. Meßstrecke 2'. Die Zuleitungsschiene oder Sammelschiene 4 ist mit den Einzelanoden 8 durch ein Stromzuführungsband 5 elektrisch leitend, jedoch flexibel verbunden. Die Anoden 8 haben wie ersichtlich an sich bekannte, z. B. in einer Hülse angeordnete Stromzuführungsbolzen, die ihrerseits mit Verstellschrauben 10 zur Einzelverstellung gegenüber dem Rahmen 11 versehen sind. Mit 12 ist ein Hubgetriebe bezeichnet, das von einem elektrischen Getriebemotor 13 angetrieben wird, z. B. über die dargestellte horizontale Welle, so daß nach Art eines Kegelradantriebes der Tragrahmen 11 für die Anoden 8 insgesamt auf den Säulen 14 auf und ab beweglich ist, wie durch Pfeile angedeutet.The monitoring and control device 1 is connected to the
Obwohl diese Antriebsart bevorzugt wird, sind auch andere an sich bekannte Stellantriebe anwendbar. Wesentlich ist, daß sozusagen die Grobeinstellung für alle Anoden gemeinsam erfolgt während die Feineintellung einzeln manuell erfolgt.Although this type of drive is preferred, other actuators known per se can also be used. It is essential that, as it were, the rough adjustment for all anodes is carried out together, while the fine adjustment is carried out manually.
Mit Vorteil werden die Leitungen und die Befestigungselemente für die Zuleitungen zu den Anoden aus dem gleichen Material wie die Stromschinen hergestellt. Ferner sind Temperaturausgleichselemente vorgesehen um Temperaturdifferenzen in den einzelnen Zuleitungsschienen auszugleichen.The lines and the fastening elements for the lines to the anodes are advantageously made from the same material as the current rails. Temperature compensation elements are also provided in order to compensate for temperature differences in the individual supply rails.
Der Meßteil kann auch als Einzelgerät ausgeführt werden, so daß eine Zelle, die über keine motorische Verstellung verfügt, manuell nachjustiert werden kann.The measuring part can also be designed as a single device, so that a cell that has no motorized adjustment can be readjusted manually.
Weitere Abwandlungen des Ausführungsbeispiels können selbstverständlich vorgenommen werden, ohne hierdurch den Rahmen der Erfindung zu verlassen.Further modifications of the exemplary embodiment can of course be carried out without thereby leaving the scope of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82102107T ATE23579T1 (en) | 1981-06-19 | 1982-03-16 | MONITORING AND CONTROL DEVICE FOR CHLORAL-ALKALI ELECTROLYTIC CELLS WITH MERCURY CATHODE. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3124108 | 1981-06-19 | ||
| DE3124108A DE3124108C2 (en) | 1981-06-19 | 1981-06-19 | Monitoring and control device for electrolysis cells with mercury cathodes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0068076A2 true EP0068076A2 (en) | 1983-01-05 |
| EP0068076A3 EP0068076A3 (en) | 1983-03-23 |
| EP0068076B1 EP0068076B1 (en) | 1986-11-12 |
Family
ID=6134924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82102107A Expired EP0068076B1 (en) | 1981-06-19 | 1982-03-16 | Monitoring and control device for chloroalcali electrolytic cells with mercury cathode |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4448660A (en) |
| EP (1) | EP0068076B1 (en) |
| AT (1) | ATE23579T1 (en) |
| CA (1) | CA1189825A (en) |
| DE (2) | DE3124108C2 (en) |
| MX (1) | MX151556A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0099795B1 (en) * | 1982-07-07 | 1986-12-30 | Giusti, Max | Apparatus for monitoring and indicating the current distribution in an electrolyzer |
| KR100865294B1 (en) | 2007-05-16 | 2008-10-27 | 삼성전기주식회사 | Hydrogen generating apparatus and fuel cell power generation system |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8521128D0 (en) * | 1985-08-23 | 1985-10-02 | Alcan Int Ltd | Controlling anode movement in aluminium cell |
| DE3908087A1 (en) * | 1989-03-13 | 1990-09-20 | Vaw Ver Aluminium Werke Ag | METHOD AND DEVICE FOR RE-REGULATING THE POLE DISTANCE TO COMPENSATE THE ANODE BURN UP IN ELECTROLYSIS CELLS |
| US5843296A (en) * | 1996-12-26 | 1998-12-01 | Digital Matrix | Method for electroforming an optical disk stamper |
| US5785826A (en) * | 1996-12-26 | 1998-07-28 | Digital Matrix | Apparatus for electroforming |
| US20040055873A1 (en) * | 2002-09-24 | 2004-03-25 | Digital Matrix Corporation | Apparatus and method for improved electroforming |
| BR112015000194B1 (en) * | 2012-08-17 | 2021-05-18 | Alcoa Usa Corp | inert anode electrolytic cell and method of monitoring an electrolytic cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1221578A (en) * | 1965-11-11 | 1971-02-03 | Knapsack Ag | Apparatus for measuring the current at the individual electrodes of electrolytic cells |
| DE2422582A1 (en) * | 1973-05-10 | 1974-11-28 | Olin Corp | METHOD AND DEVICE FOR ADJUSTING THE ANODE-CATHODE DISTANCE IN AN ELECTROLYSIS CELL TO AVOID CURRENT OVERLOAD OR UNDERLOAD |
| DE2432691A1 (en) * | 1973-07-10 | 1975-01-30 | Ppg Industries Inc | PROCEDURE FOR FINDING SHORT CIRCUITS IN MERCURY CELLS AND CALIBRATING THE CURRENTS |
| US4035268A (en) * | 1973-09-17 | 1977-07-12 | Produits Chimiques Ugine Kuhlmann | Process for the control of mercury cathode electrolysis cells |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476660A (en) * | 1966-03-23 | 1969-11-04 | Ici Ltd | Method of sequentially adjusting the anodes in a mercury-cathode cell |
| US4098666A (en) * | 1974-07-18 | 1978-07-04 | Olin Corporation | Apparatus for regulating anode-cathode spacing in an electrolytic cell |
| US4004989A (en) * | 1974-04-18 | 1977-01-25 | Olin Corporation | Method for automatic adjustment of anodes based upon current density and current |
| US4098639A (en) * | 1975-06-17 | 1978-07-04 | Mo Och Domsjo Aktiebolag | Process for reducing the requirement of fresh chemicals without increasing emissions in the pulping of cellulosic material |
| DE2729732B2 (en) * | 1977-07-01 | 1980-06-26 | Hoechst Ag, 6000 Frankfurt | Device for regulating, monitoring, optimizing, operating and displaying information in chlor-alkali electrolysis systems |
-
1981
- 1981-06-19 DE DE3124108A patent/DE3124108C2/en not_active Expired
-
1982
- 1982-03-16 DE DE8282102107T patent/DE3274265D1/en not_active Expired
- 1982-03-16 EP EP82102107A patent/EP0068076B1/en not_active Expired
- 1982-03-16 AT AT82102107T patent/ATE23579T1/en active
- 1982-06-03 MX MX192994A patent/MX151556A/en unknown
- 1982-06-14 CA CA000405090A patent/CA1189825A/en not_active Expired
- 1982-06-17 US US06/389,285 patent/US4448660A/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1221578A (en) * | 1965-11-11 | 1971-02-03 | Knapsack Ag | Apparatus for measuring the current at the individual electrodes of electrolytic cells |
| DE2422582A1 (en) * | 1973-05-10 | 1974-11-28 | Olin Corp | METHOD AND DEVICE FOR ADJUSTING THE ANODE-CATHODE DISTANCE IN AN ELECTROLYSIS CELL TO AVOID CURRENT OVERLOAD OR UNDERLOAD |
| FR2228541A1 (en) * | 1973-05-10 | 1974-12-06 | Olin Corp | |
| DE2432691A1 (en) * | 1973-07-10 | 1975-01-30 | Ppg Industries Inc | PROCEDURE FOR FINDING SHORT CIRCUITS IN MERCURY CELLS AND CALIBRATING THE CURRENTS |
| FR2236969A1 (en) * | 1973-07-10 | 1975-02-07 | Ppg Industries Inc | |
| US4035268A (en) * | 1973-09-17 | 1977-07-12 | Produits Chimiques Ugine Kuhlmann | Process for the control of mercury cathode electrolysis cells |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0099795B1 (en) * | 1982-07-07 | 1986-12-30 | Giusti, Max | Apparatus for monitoring and indicating the current distribution in an electrolyzer |
| KR100865294B1 (en) | 2007-05-16 | 2008-10-27 | 삼성전기주식회사 | Hydrogen generating apparatus and fuel cell power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3124108C2 (en) | 1986-01-09 |
| EP0068076B1 (en) | 1986-11-12 |
| CA1189825A (en) | 1985-07-02 |
| DE3124108A1 (en) | 1983-01-13 |
| EP0068076A3 (en) | 1983-03-23 |
| MX151556A (en) | 1984-12-13 |
| DE3274265D1 (en) | 1987-01-02 |
| ATE23579T1 (en) | 1986-11-15 |
| US4448660A (en) | 1984-05-15 |
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