EP0099795A1 - Vorrichtung zum Überwachen und Anzeigen der Stromverteilung in einem Elektrolyseur - Google Patents

Vorrichtung zum Überwachen und Anzeigen der Stromverteilung in einem Elektrolyseur Download PDF

Info

Publication number: EP0099795A1
Authority: EP; European Patent Office
Prior art keywords: voltage; current; measuring; distribution; value
Prior art date: 1982-07-07
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.): Granted

Application number

EP83401356A

Other languages

English (en)

French (fr)

Other versions

EP0099795B1 (de

Inventor

Jean De Costecaude

Zénon Majgier

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.)

Individual

Original Assignee

Individual

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.)

1982-07-07

Filing date

1983-07-01

Publication date

1984-02-01

1983-07-01 Application filed by Individual filed Critical Individual

1983-07-01 Priority to AT83401356T priority Critical patent/ATE24551T1/de

1984-02-01 Publication of EP0099795A1 publication Critical patent/EP0099795A1/de

1986-12-30 Application granted granted Critical

1986-12-30 Publication of EP0099795B1 publication Critical patent/EP0099795B1/de

Status Expired legal-status Critical Current

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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
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation

Definitions

the present invention relates to a device for controlling and displaying the distribution of current in an electrolysis cell. It relates more particularly to a device usable in installations for the electrolysis of alkali metal halides.
This centralization system naturally presents the advantages specific to centralization, that is to say in particular the possibility of scrolling, in a single place and on the same screen, the current distribution profile of a set of cells of electrolysis.
this system does not allow the profile to be checked and displayed at all times current distribution or simultaneously control and visualization of a group of cells while knowledge of the functioning of electrolysis cells clearly shows the existence of interactions between cells.
the invention firstly proposes to provide a system for controlling and displaying the distribution of current in the cells of an electrolysis installation, this system being individualized at the level of each cell.
Another object of the invention is to provide a system located at the cell level and allowing the simultaneous monitoring of several cells.
Another object of the invention is to provide a system allowing permanent and continuous control of all cells.
electrolysis cell will be used to denote a unit comprising the same mercury cathode, that is to say the same mercury flux, this unit itself being able to be constituted by the juxtaposition of several groups of anodes in general from 2 to 5, the number of anodes of each group being able to go from 2 to 10: it should be understood that these indications are only of an informative nature and cannot limit the field concerned by the invention which applies to any electrolyser and in particular to homopolar membrane electrolysers.
a device for controlling and displaying the distribution of the current in the electrolysis cells, this system being characterized in that it comprises, for each electrolysis cell, a set of means (A ) for measuring and controlling the distribution of the current at each anode and of the voltage between each group of anodes and the corresponding cathode part and of a set of means (B) allowing instantaneous and continuous visualization of this distribution current, voltage and exceeding current and voltage thresholds.
A for measuring and controlling the distribution of the current at each anode and of the voltage between each group of anodes and the corresponding cathode part and of a set of means (B) allowing instantaneous and continuous visualization of this distribution current, voltage and exceeding current and voltage thresholds.
corresponding cathode part means that the voltage measurement is carried out between a point placed on the group of anodes and a point on the cathode situated substantially opposite or directly above said point.
FIG. 2 An embodiment of the device according to the invention is shown in more detail in FIG. 2, in which the installation shown diagrammatically comprises n anodes spread over p groups.
the current measurement means (reference 1 in FIG. 1) comprise, for each of the anodes, a point for measuring the intensity on the direct current busbar set (I 1 , I 2 ... I n ), the input circuit consisting of an amplifier (charge amplifier operating in differential mode) - marks A 1 , A 2 ... A n -, polarized in the usual way in an assembly of this type (differential mode) by the resistors (R1 1 , R1 2 , R1 3 , R 1 4 ... Rn 1 , Rn 2 , Rn 3 , Rn 4 ).
the signals thus amplified advantageously pass through a low-pass filter (F 1 , F 2 ... F n ) intended for the elimination of the parasites.
the voltage measurement means include, for a group of anodes, a voltage measurement point (U 1 to U p ), an amplifier (AA 1 to AAp), the set of resistors (RR1 1 , RR1 2 , RR1 3 , RR1 4 to RRP 1 , RRp 2 , RRp 3 ' RR P4 ) and, in particular in the application to alkaline halide electrolysis cells comprising a mercury cathode, a low-pass filter (FF1 to FFp).
a voltage measurement point U 1 to U p
an amplifier AA 1 to AAp
the set of resistors RR1 1 , RR1 2 , RR1 3 , RR1 4 to RRP 1 , RRp 2 , RRp 3 ' RR P4
FF1 to FFp low-pass filter
the summing device S calculates the sum ⁇ I of the intensities measured on each of the anodes (I 1 + I 2 + ... + I n ) and sends this signal to a device M for calculating an intensity value equal to the average value ⁇ I increased by a fraction of this n value, this percentage increase being able to reach 50% and generally being between 10 and 40%, the value thus determined ⁇ I n + x% being sent to the comparators C 1 , C 2 ... C n .
the summing device S can for example be an operational amplifier mounted as a summing device.
the same signal ⁇ I is sent to a device U c for calculating a voltage value U which will be set and which will serve as a reference or basis for controlling the voltage in the cell and which may be displayed if necessary.
k a value which may be between 0.3.10 -3 and 0.8.10 -3 ⁇ , (I being expressed in kA), the value of E itself being able to vary from 3.05 to 3.20 V.
the device for calculating this set value can for example be an operational amplifier mounted as a summator, which will be connected to the summing device S, via the resistor k and will receive the reference voltage E (average of the voltages of the p groups of anodes) and will deliver a signal which can control a display system and a signal which can either be used as such as a reference value for comparison with the measured voltage values U 1 ... U p , or for the determination of two values of maximum voltage U M and minimum U m which will be used for this comparison, the values U M and U m may be equal to the value U ⁇ 20%.
the signal delivered by the device M is sent to each of the comparators C 1 , C 2 ... C n at the same time as the signals coming from the amplifiers A 1 , A 2 ... A n .
the value of I 1 , 1 2 ... or I n is greater than the average intensity mentioned above, there is emission of a signal making it possible to locate the deficient anode, this signal being able to be accompanied by a light and / or audible alarm signal AL.
the emitter of the signal locating the deficient anode may for example be a light-emitting diode, an indicator light or any equivalent device.
the signal sent by the amplifiers AA 1 to AAp is compared in CC 1 to CC p with the value U or, preferably with the values U M and U m , this comparison resulting in the emission of a signal, either if U 1 ... U is different from U, or if U ... U is greater than U M and / or less than U. m
the comparators C 1 , C 2 ... C and CC 1 ... CC p can for example be comparators or operational amplifiers mounted as comparators.
the signals coming out on the one hand from the current amplifiers A 1 , A2 ... A n , on the other hand from the voltage amplifiers AA 1 ... AA p are sent to the display devices.
These devices are essentially of two types: the display of the intensities is ensured by light scales made up of a plurality of light-emitting diodes, these diodes being supplied by one or more analog / digital converters A / D connected to the amplifiers; the voltages can be displayed by analog or, preferably, digital voltmeters.
Each of the light scales mentioned above has a resolution advantageously of 20 points, each point corresponding for example, in the electrolysis application of sodium chloride in mercury cells, at 1 mV and also corresponding to a light-emitting diode.
Light scales are thus produced comprising 20 light-emitting diodes, but it goes without saying that this number is purely indicative and that it is possible, without departing from the scope of the invention, to have scales of different resolution, for example between 10 and 40 points. , by keeping the same intensity range covered but by modifying the meaning of each point (from 0.5 to 2 mV per point for example) or by modifying the intensity range.
the light scale can be produced by combining two or more modules, each consisting for example of 5 to 10 light-emitting diodes, each of the modules being able to be controlled by an analog / digital converter.
the converters are generally connected in series.
the analog / digital converters can for example be constituted by the integrated circuits marketed under the references LM 3914 by National Semi-Conductor or TL 490 by Texas Instruments.
the display table may include, in addition to the aforementioned light scales and voltmeters, a display of the brine outlet temperature, the temperature measurement being able to be carried out by means of a thermocouple or of a variable resistance depending on the temperature (T ° C).
the device according to the invention thus continuously provides a set of information on the operation of the cell.
Visualization by light scale, by comparison with needle or digital display devices has the considerable advantage of instantly providing a vision of all the anodes and groups of anodes connected to the same device.
the small footprint of the system allows it to be installed in the immediate vicinity of the electrolysis tanks and therefore makes it possible to immediately compare the profile of a tank with that of neighboring tanks.-It goes without saying that the system of measurement, control and display according to the invention can be connected to an automatic regulation system comprising motorized anode supports and a device controlling in particular the ascent of the anodes in the event of a short circuit or danger of short circuit, in the hypothesis of a use in mercury cathode cells.

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Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Automation & Control Theory (AREA)
Chemical Kinetics & Catalysis (AREA)
Electrochemistry (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Electrolytic Production Of Metals (AREA)
Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)

EP83401356A 1982-07-07 1983-07-01 Vorrichtung zum Überwachen und Anzeigen der Stromverteilung in einem Elektrolyseur Expired EP0099795B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT83401356T ATE24551T1 (de)	1982-07-07	1983-07-01	Vorrichtung zum ueberwachen und anzeigen der stromverteilung in einem elektrolyseur.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8211907		1982-07-07
FR8211907A FR2529913A1 (fr)	1982-07-07	1982-07-07	Dispositif de controle et de visualisation de la repartition du courant dans un electrolyseur

Publications (2)

Publication Number	Publication Date
EP0099795A1 true EP0099795A1 (de)	1984-02-01
EP0099795B1 EP0099795B1 (de)	1986-12-30

Family

ID=9275764

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP83401356A Expired EP0099795B1 (de)	1982-07-07	1983-07-01	Vorrichtung zum Überwachen und Anzeigen der Stromverteilung in einem Elektrolyseur

Country Status (4)

Country	Link
EP (1)	EP0099795B1 (de)
AT (1)	ATE24551T1 (de)
DE (1)	DE3368693D1 (de)
FR (1)	FR2529913A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4721947A (en) *	1985-03-19	1988-01-26	The Welding Institute	Welding monitor
WO2007087728A1 (en)	2006-02-03	2007-08-09	Recherche 2000 Inc.	Adaptive method and system of monitoring signals for detecting anomalies
CN112226787A (zh) *	2020-10-21	2021-01-15	阳光电源股份有限公司	一种制氢*开关机的控制方法、装置、*及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2228541A1 (de) *	1973-05-10	1974-12-06	Olin Corp
FR2248336A1 (de) *	1973-10-18	1975-05-16	Siemens Ag
DE2652774A1 (de) *	1976-11-19	1978-05-24	Siemens Ag	Einrichtung zur ueberwachung einer elektrolyseanlage

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3124108C2 (de) *	1981-06-19	1986-01-09	Heraeus Elektroden GmbH, 6450 Hanau	Überwachungs- und Steuerungseinrichtung für Elektrolysezellen mit Quecksilberkathoden

1982
- 1982-07-07 FR FR8211907A patent/FR2529913A1/fr active Granted
1983
- 1983-07-01 DE DE8383401356T patent/DE3368693D1/de not_active Expired
- 1983-07-01 EP EP83401356A patent/EP0099795B1/de not_active Expired
- 1983-07-01 AT AT83401356T patent/ATE24551T1/de not_active IP Right Cessation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2228541A1 (de) *	1973-05-10	1974-12-06	Olin Corp
FR2248336A1 (de) *	1973-10-18	1975-05-16	Siemens Ag
DE2652774A1 (de) *	1976-11-19	1978-05-24	Siemens Ag	Einrichtung zur ueberwachung einer elektrolyseanlage

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4721947A (en) *	1985-03-19	1988-01-26	The Welding Institute	Welding monitor
WO2007087728A1 (en)	2006-02-03	2007-08-09	Recherche 2000 Inc.	Adaptive method and system of monitoring signals for detecting anomalies
EP1979715A1 (de) *	2006-02-03	2008-10-15	Recherche 2000 Inc.	Adaptives verfahren und system zur überwachung von signalen zur detektion von anomalien
EP1979715A4 (de) *	2006-02-03	2013-10-30	Rech 2000 Inc	Adaptives verfahren und system zur überwachung von signalen zur detektion von anomalien
CN112226787A (zh) *	2020-10-21	2021-01-15	阳光电源股份有限公司	一种制氢*开关机的控制方法、装置、*及存储介质
CN112226787B (zh) *	2020-10-21	2022-04-08	阳光电源股份有限公司	一种制氢*开关机的控制方法、装置、*及存储介质

Also Published As

Publication number	Publication date
EP0099795B1 (de)	1986-12-30
DE3368693D1 (en)	1987-02-05
ATE24551T1 (de)	1987-01-15
FR2529913A1 (fr)	1984-01-13
FR2529913B1 (de)	1984-12-21

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Date	Code	Title	Description
1983-12-03	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
1984-02-01	AK	Designated contracting states	Designated state(s): AT BE CH DE GB IT LI LU NL SE
1984-06-13	17P	Request for examination filed	Effective date: 19840403
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1987-10-26	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1987-10-26	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1987-12-16	26N	No opposition filed
1991-07-31	ITTA	It: last paid annual fee
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