EP3266904B1 - Installation a electrolyse ignee et procede de reglage de son fonctionnement - Google Patents

Installation a electrolyse ignee et procede de reglage de son fonctionnement Download PDF

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Publication number
EP3266904B1
EP3266904B1 EP16177980.6A EP16177980A EP3266904B1 EP 3266904 B1 EP3266904 B1 EP 3266904B1 EP 16177980 A EP16177980 A EP 16177980A EP 3266904 B1 EP3266904 B1 EP 3266904B1
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cell
molten salt
salt electrolysis
heat
electrolysis cell
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German (de)
English (en)
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EP3266904A1 (fr
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Roman Düssel
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Trimet Aluminium SE
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Trimet Aluminium SE
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Priority to CN201710541196.9A priority patent/CN107574461A/zh
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/20—Automatic control or regulation of cells
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/005—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells of cells for the electrolysis of melts
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/06—Operating or servicing

Definitions

  • the present invention relates to a control method for operating a cell of a melt flow electrolysis system, in particular for the production of aluminum.
  • the present invention also relates to a melt-flow electrolysis system, in particular for the production of aluminum, with a melt-flow electrolysis cell.
  • the regeneratively provided energy cannot be stored due to storage media that have not yet been available to a suitable extent and can then be accessed depending on the electricity demand. Furthermore, the regenerative energy can only be fed into the power grid if the corresponding energy sources, in particular the volatile energy sources from wind and sun, enable the conversion into electrical energy and its feeding into the power grid.
  • the consumers in the power grid would therefore have to adapt their electrical energy requirements as far as possible to the feed-in from regenerative energy sources, provided that fossil energy sources are not used as a buffer.
  • Industries that have a very high energy requirement are particularly affected by this trend, because their electricity consumption does not fit in with the general electricity requirement and can therefore hardly be compensated for by other electricity consumers. This includes, in particular, aluminum production, but other branches of industry, particularly those in the chemical industry, are also heavily affected by this development.
  • fused flux electrolysis processes are therefore control processes in the control engineering sense, which can rely on constant, very easily predeterminable boundary conditions.
  • the temperature of the melt inside the melt flow electrolysis cell is determined at relatively long intervals, for example once a day.
  • the solidification temperature is also determined at relatively long intervals, for example after the temperature of the melt has been determined.
  • Another approach is based on the determination of the AlF 3 content of the melt.
  • the thickness of the crust is kept within a practicable range by adapting the voltage drop across the fused salt electrolysis cell, if necessary. For example, in the case of a fused metal electrolysis cell, it is assumed that the crust has a suitable thickness if the temperature of the melt is 8 ° C. above its solidification temperature.
  • Out DE 26 15 652 A1 describes a method for measuring and controlling the energy balance of aluminum furnaces, in which the immersion depth of the anode of the electrolytic cell is changed as a function of a temperature measured in the furnace lining on the side.
  • GB 2 076 428 A discloses a method for operating an aluminum electrolysis cell in which a heat dissipation through heat pipes is controlled as a function of a measured cell wall temperature.
  • CH 648 871 A5 describes a method for checking the board in a fused-salt electrolysis cell, in which the immersion depth of the anode is changed depending on the energy supplied, taking into account the current strength and the ohmic bath resistance.
  • melt flow electrolysis system in which the melt flow electrolysis system is controlled in such a way that the amount of electrical power it consumes is adapted to the amount of electrical power simultaneously fed in by a volatile energy source.
  • the melt flow electrolysis system can be used as a "virtual battery" in the Use power grid.
  • the power consumption of the melt flow electrolysis system is adjusted, within the system limits of the system, to the amount of energy available in the power grid by means of a corresponding control of the power consumption.
  • the present invention has the object of providing a method for operating a cell of a melt-flow electrolysis system, in particular for the production of aluminum, as well as a melt-flow electrolysis system, in particular for the production of aluminum, with a corresponding melt-flow electrolysis cell, whereby an economical and process-reliable Production process when operating the melt flow electrolysis system is also possible under the prerequisite of fluctuating availability of electrical energy in the power grid.
  • An object of the present invention is to provide a control method and a melt-flow electrolysis system of the technical field described above, whereby the melt-flow electrolysis can be operated safely with variable availability of electrical energy, in particular without additional loading of the melt-flow electrolysis cells or the efficiency of the melt-flow electrolysis, in particular the production of Aluminum.
  • a control method according to the invention is defined in claim 1.
  • a melt flow electrolysis system according to the invention results from claim 8.
  • a use according to the invention of the control method or the melt flow electrolysis system results from claim 14.
  • the control method according to the invention for operating a cell of a melt flow electrolysis system, in particular for the production of aluminum is characterized in that a first control variable is an energy balance of the cell, which takes into account the electrical energy entering the melt flow electrolysis cell and the thermal energy exiting the melt flow electrolysis cell, with a second
  • the controlled variable is a thermal state of the cell.
  • “regulation” or “regulation” is understood to mean a process in which a variable, the “controlled variable”, is continuously recorded, compared with another variable, the “reference variable”, and in the sense of an approximation to the Reference variable is influenced.
  • the closed action sequence, in which the controlled variable continuously influences itself in the action path of the control loop, is characteristic of the control.
  • “regulation” or “regulation” is also understood to mean a process in which the “controlled variable” is continuously simulated instead of measured, compared with the “reference variable” and influenced in the sense of an adjustment to the reference variable. With this form of control in the present sense, too, the closed action sequence, in which the controlled variable continuously influences itself in the action path of the control loop, is characteristic.
  • direct or indirect measurement of the heat output can be dispensed with and this can instead be determined on the basis of a simulation of the heat output.
  • the previous mode of operation must be deviated from.
  • the operation of the Melt-flow electrolysis cell regulated in such a way that the electrolyte temperature is in a relatively wide temperature range. According to the invention, this is brought about by the control-related consideration of the heat balance.
  • the heat balance is understood to mean an energy balance which takes into account the electrical energy entering the fused electrolysis cell and the thermal energy exiting the fused electrolysis cell.
  • the proportion of the electrical energy entering the aluminum electrolysis cell used for the production of aluminum is also preferably determined.
  • this proportion of the electrical energy entering the aluminum electrolysis cell can be assumed to be constant and the proportion introduced as heat into the aluminum electrolysis cell can be determined from the difference between the total electrical energy and the energy used for production, which is assumed to be constant.
  • the heat balance of the fused flux electrolysis cell is consequently determined and the operation of the fused flow electrolysis cell is regulated on the basis of the heat balance as a control variable.
  • a thermocouple and / or a device, in particular a measuring device, for determining a volume flow of exhaust air from the cell and / or a device, in particular a measuring device, for determining a volume flow of a heat transport fluid in a heat exchanger on the cell is or are preferred as a measuring element or several measuring elements are used to determine the first controlled variable, ie the heat balance.
  • At least 6, preferably at least 12, more preferably at least 30, more preferably at least are preferred 60, thermocouples arranged on the cell in order to be able to determine the temperature distribution on the cell and thus also the heat balance as precisely as possible.
  • melt flow electrolysis cells of a melt flow electrolysis system are provided with the thermocouple or the multiple thermocouples. This simplifies the design effort of the overall system and largely achieves the desired goal of the regulated operation of the melt flow electrolysis system.
  • thermocouples can function individually or jointly as a measuring element in the control engineering sense. This basically also applies to the device for determining the volume flow of the exhaust air from the cell, which can determine the mass flow as an alternative or in addition to the volume flow and can preferably also determine information on the temperature of the exhaust air.
  • Such a device for determining the volume flow of the exhaust air from the cell or the device for determining a volume flow of the heat transfer fluid in the heat exchanger can also function, for example, by determining a speed of a fan or a corresponding element, also indirectly, for example via the energy consumption or the (Rotary) field of an electric motor driving the fan. In this way it is possible to determine the volume flow of exhaust air or heat transport fluid without measuring it directly, because the volume flow is generated at least to a substantial extent by the fan or a corresponding element. Nevertheless, this determination of the volume flow in the Regulation of the operation of the fused metal electrolysis cell can be processed as "measurement".
  • Said heat transfer fluid can in particular be air, which can be guided along the cell wall, for example, in a basically known heat exchanger.
  • the heat transport fluid in addition to the volume flow or instead of the volume flow, a mass flow can also be determined, and the temperature of the heat transport fluid can also preferably be determined.
  • the heat exchanger can influence the extent of cooling or heat loss of the fused-salt electrolysis cell and thus in particular the thickness of the crust along its edge and thus influence the heat balance in several ways.
  • thermocouple devices for determining a volume flow of an exhaust air from the cell and measuring device for determining a volume flow of a heat transfer fluid in a heat exchanger on the cell, for continuous detection of a heat supplied to the cell and a heat dissipated from the cell Heat suitable and designed.
  • the cell has side walls, a floor and an exhaust air duct, with arranged on or in at least one of the side walls, the floor or the exhaust air duct, preferably on or in all side walls and the floor and particularly preferably also on or in the exhaust air duct
  • Thermocouples are used as measuring elements to determine the heat balance.
  • At least one heat exchanger and / or at least one exhaust gas flow flap and / or a chemical composition of the melt, in particular an AlF 3 metering, and / or at least one crossbeam for positioning at least one anode in the cell as an actuator to act on a heat input and / or are preferred a heat discharge is used.
  • the above-mentioned elements make it possible to vary the heat input and / or heat output within relatively wide limits, the heat input or heat output being used as a manipulated variable when regulating the heat balance. In principle, there are also other ways of varying the heat input or heat output, but the above-mentioned elements have proven to be particularly effective in connection with fused-salt electrolysis cells.
  • a corresponding adjustment of the voltage drop across the fused-melt electrolysis cell is carried out. This can be brought about in particular by changing the distance between the anode or a plurality of anodes and the cathode or a plurality of cathodes.
  • An increase in the current basically brings more heat into the fused-salt electrolysis cell, while a reduction in the voltage, ie a reduction in the distance between the electrodes, leads to a fundamentally lower heat input.
  • the position of the exhaust gas flow flap or heat exchanger is preferably used to further influence the heat output from the fused salt electrolysis cell taken because the variation of the heat input is possible more effectively than that of the heat output.
  • An entry of material to be melted, in particular aluminum oxide and cryolite, and / or a discharge of molten material, in particular aluminum, and / or a change in a melt flow electrolysis current strength are also taken into account as a disturbance variable.
  • the entry of material to be melted changes not only the temperature of the electrolyte bath, but also its chemical composition, which has an impact on the heat balance of the operation of the melt flow electrolysis cell.
  • the melt flow electrolysis current strength changes the energy input and thus the amount of heat supplied.
  • the strength of the current can vary in an uncontrolled manner within certain limits, in particular due to the variable energy present in the power network and thus bypassing the regulation of the fused-salt electrolysis itself.
  • a third control variable is a chemical state of the cell.
  • the thermal state of the cell is to be understood in particular as the temperature of the electrolyte as a decisive variable.
  • other elements of the cell also contribute to its thermal Condition at.
  • the most critical part of the cell is the electrolyte, because its temperature must be kept above its solidification temperature in any case in order to keep the melt flow electrolysis system functional.
  • the chemical state of the cell is therefore also largely determined by the solidification temperature of the electrolyte, which depends in particular on the "AlF 3 excess".
  • a melt-flow electrolysis system according to the invention in particular for the production of aluminum, with a melt-flow electrolysis cell is characterized in that the melt-flow electrolysis system has a control device which is designed to carry out one of the control methods described above.
  • the melt flow electrolysis system comprises a thermocouple and / or a measuring device for determining a volume flow of exhaust air from the melt flow electrolysis cell and / or, if a heat exchanger for influencing a heat input or heat output by means of a heat transport fluid on at least one outer surface of the melt flow electrolysis cell is included, a measuring device for determination a volume flow rate of the heat transport fluid in the heat exchanger at the fused salt electrolysis cell.
  • these elements are particularly well suited to be used as measuring elements in the inventive control, because they provide meaningful information for determining the heat balance of the fused metal electrolysis cell and therefore allow the control to be implemented particularly easily.
  • the melt flow electrolysis cell of a preferred melt flow electrolysis system has side walls, a base and an exhaust air duct, with thermocouples on or in at least one of the side walls, the base or the exhaust air duct, preferably on or in all side walls and the base and particularly preferably also on or in the exhaust air duct are arranged. This makes it possible to determine the heat balance of the fusible flow electrolysis cell particularly well and is therefore particularly suitable for use in the context of the invention.
  • the melt flow electrolysis system comprises a heat exchanger for influencing a heat input or heat output by means of a heat transport fluid on at least one outer surface of the melt flow electrolysis cell and / or an adjustable exhaust gas flow flap for influencing a volume flow of an exhaust gas from the melt flow electrolysis cell and / or a device for changing a chemical composition of the melt, in particular for changing a dosage of AlF 3 in the melt, and / or a cross member for positioning an anode in the melt flow electrolysis cell.
  • heat loss and heat input can be efficiently adjusted and varied within wide limits in order to adapt the heat balance as efficiently as possible to its setpoint. There are basically other ways of influencing the heat balance, but they are less effective and therefore inefficient.
  • a preferred melt-flow electrolysis system comprises a device for determining a mass of material to be melted introduced into the melt-flow electrolysis cell, in particular aluminum oxide and cryolite, and / or a device for determining a mass of molten material removed from the melt-flow electrolysis cell, in particular aluminum.
  • the material introduced into the cell and removed from the cell not only changes the heat balance in that heat is removed from or brought into the fused metal electrolysis cell system, but also partially changes the chemical composition of the contents of the cell Fused metal electrolysis cell, which has an influence in particular on the solidification temperature of the electrolyte and should therefore be taken into account when regulating the heat balance.
  • the change in the temperature of the material in the cell also has an influence on the chemical composition of the melt due to the change in the thickness of the edge crust caused by this.
  • An increase in temperature leads to further melting of the crust and thus a reduction in the proportion of AlF 3 in the melt. Since this last-mentioned process exhibits a certain inertia and pendulum motion, the determination of the chemical composition was error-prone shortly after the current intensity supplied to the cell was varied.
  • the control according to the invention can compensate for these errors and avoid misinterpretations.
  • the above-described control method or a melt-flow electrolysis system described above provided that the melt-flow electrolysis system is connected to a power grid in order to be supplied with electrical energy for the melt-flow electrolysis, in other words wherein a current used for operating the cell is supplied from the power grid, used to compensate for fluctuations in feeding energy into the power grid.
  • Such fluctuations lead to an imbalance between feed-in and consumption, which results in frequency deviations and / or voltage deviations in the network within a very short time, which endanger the stable operation of the network and must therefore be corrected immediately to avoid network breakdowns ("blackouts").
  • melt flow electrolysis system according to the invention or the control method for operating the melt flow electrolysis system are designed in such a way that the melt flow electrolysis system can be operated within the system limits with different consumption capacities the fused-salt electrolysis process can be used very well as a buffer to compensate for these power balance imbalances and thus to stabilize the grid.
  • Figure 1 shows a diagram of a preferred process management by means of closed real-time heat balance control.
  • the heat balance is used as the reference variable w (t).
  • a control deviation e (t) of the heat balance that is to say a deviation of the heat balance from the target value, is compensated for by a controller on the basis of a heat balance feedback y m (t).
  • the controller determines through the comparison between the reference variable w (t) and feedback y m (t) a deviation of the determined heat balance y (t) from the reference variable w (t) and determines appropriate countermeasures in order to adapt the controlled variable to the reference variable.
  • the heat loss or heat input are viewed as the general manipulated variable u (t).
  • the controller can, for example, influence a heat exchanger, exhaust gas flow dampers, the bath chemistry and the voltage inside the molten electrolysis cell.
  • the specific manipulated variable u S (t) which can be influenced by the controller, can, for example, be the flap position of exhaust gas flow flaps in an exhaust gas duct, a dosage of AlF 3 in the electrolyte bath, a flow rate of heat transfer fluid in the heat exchanger or a crossbar position, i.e.
  • the controlled system is therefore the fused metal electrolysis cell with its components such as the heat exchanger, the exhaust gas flow guide, the crossbeam, fan, flaps, etc.
  • the heat balance can be determined, for example, by thermocouples for measuring the temperatures on the side walls, the floor and the exhaust air duct as well as by elements for determining a volume flow of both the exhaust air and a heat transfer fluid possibly flowing through a heat exchanger in connection with an evaluation unit.
  • the data measured and evaluated by these measuring elements are fed to the controller in order to set the corresponding actuators appropriately.
  • the heat in the fused salt electrolysis cell is mainly generated in the area of the anode-cathode distance.
  • a reduction in the distance when the amperage increases and an increase in the distance when the amperage is reduced represents a first measure for regulating the heat balance. This varies the ohmic resistance of the fused-salt electrolysis cell, which is within certain limits, in particular due to a minimum distance between anode and aluminum pool as well as a energy-efficient processes are determined is possible.
  • an exhaust gas flow can be varied and in this way the heat balance of the fused-salt electrolysis cell can also be influenced.
  • An increase in the exhaust gas flow increases heat output, while a reduction in the exhaust gas flow acts as an insulation.
  • melt flow electrolysis system in particular an aluminum electrolysis system, without the requirement of a to operate a constant amperage made available from the power grid in an economically viable manner.
  • FIG. 12 shows a schematic view of a melt flow electrolysis system with a melt flow electrolysis cell 30.
  • the melt flow electrolysis cell 30 is laterally bounded by cell walls 32 and also has a cell bottom 34, which at the same time functions as a cathode for the melt flow electrolysis process inside the cell 30.
  • Inside the cell 30 there is an anode 36 protruding from above into the cell 30 and the melt 38, 35.1, which includes cryolite and molten aluminum, among other things.
  • a heat exchanger 39 is arranged through which a fluid, such as. B. air, CO 2 , nitrogen or a liquid is passed.
  • the heat exchanger 39 is particularly preferably connected via a line system 31 to a heat store 33, which can be formed, for example, by a conventional or also a latency heat store.
  • heat can be conducted from the heat store 33 through the line system 31 to the heat exchanger 39.
  • the inside of the fused metal electrolysis cell can be effectively heated via the cell walls 32 by less heat being radiated to the outside, because the temperature difference between the inside of the cell and the outside of the cell walls 32 is reduced, and the solidification of the melt is thereby inhibited.
  • the same effect is achieved by varying the exhaust gases sucked up or retained.
  • a control device 37 is designed to operate the cell of the melt flow electrolysis system in such a way that its heat balance is controlled, as has been described above.
  • the fusible electrolysis cell comprises a multiplicity of thermocouples (not shown) in its side walls, the bottom and also in the area of its exhaust air duct adjoining the fusible electrolysis cell at the top. The measurement results recorded by these thermocouples are fed to the regulating device 37 and evaluated there to regulate the operation of the melt-flow electrolysis cell.
  • the power grid can also be kept stable despite the infeed of volatile energy sources, without having to resort to special (currently insufficiently available) storage devices and the like.

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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)

Claims (15)

  1. Procédé de réglage pour faire fonctionner une cellule d'une installation d'électrolyse ignée, en particulier pour la production d'aluminium,
    dans lequel une première grandeur de réglage est un bilan énergétique de la cellule, qui prend en compte l'énergie électrique entrant dans la cellule d'électrolyse ignée et l'énergie calorifique sortant de la cellule d'électrolyse ignée, et
    dans lequel une deuxième grandeur de réglage est un état thermique de la cellule.
  2. Procédé de réglage selon la revendication 1, dans lequel un thermocouple et/ou un dispositif pour déterminer un courant volumique d'un air rejeté de la cellule et/ou un dispositif pour déterminer un courant volumique d'un fluide caloporteur dans un échangeur de chaleur au niveau de la cellule sont utilisés comme élément de mesure pour déterminer la première grandeur de réglage.
  3. Procédé de réglage selon la revendication 1 ou 2, dans lequel la cellule présente des parois latérales, un fond et une évacuation de l'air rejeté,
    dans lequel des thermocouples agencés en tant qu'éléments de mesure sur ou dans au moins une des parois latérales, du fond ou de l'évacuation de l'air rejeté, de préférence sur ou dans toutes les parois latérales et le fond et le plus préférentiellement également sur ou dans l'évacuation de l'air rejeté sont utilisés pour déterminer la première grandeur de réglage.
  4. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel au moins un échangeur de chaleur et/ou au moins un clapet de courant de gaz d'échappement et/ou une composition chimique de la masse fondue, en particulier un dosage d'AIF3, et/ou au moins une traverse pour le positionnement d'au moins une anode dans la cellule sont utilisés en tant qu'organe de réglage pour agir sur un apport de chaleur et/ou une sortie de chaleur.
  5. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel un apport de matériau à fondre, en particulier de l'oxyde d'aluminium et de la cryolithe, et/ou une sortie de matériau fondu, en particulier de l'aluminium, et/ou une modification d'une intensité de courant d'électrolyse est ou sont pris en compte en tant que grandeur perturbatrice.
  6. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel une troisième grandeur de mesure est un état chimique de la cellule.
  7. Procédé de réglage selon l'une quelconque des revendications précédentes, dans lequel un courant utilisé pour un fonctionnement de la cellule est acheminé à partir d'un réseau électrique.
  8. Installation d'électrolyse ignée, en particulier pour la production d'aluminium, avec une cellule d'électrolyse ignée,
    caractérisée en ce que
    l'installation d'électrolyse ignée présente un dispositif de réglage qui est formé pour réaliser un procédé de réglage selon l'une quelconque des revendications précédentes.
  9. Installation d'électrolyse ignée selon la revendication 8,
    comprenant en particulier un échangeur de chaleur pour influer sur un apport de chaleur ou une sortie de chaleur au moyen d'un fluide caloporteur sur au moins une surface extérieure de la cellule d'électrolyse ignée,
    dans laquelle la cellule d'électrolyse ignée présente un thermocouple et/ou un dispositif de mesure pour déterminer un courant volumique d'un air rejeté de la cellule d'électrolyse ignée et/ou un dispositif de mesure pour déterminer un courant volumique du fluide caloporteur dans l'échangeur de chaleur au niveau de la cellule d'électrolyse ignée.
  10. Installation d'électrolyse ignée selon la revendication 8 ou 9, dans laquelle la cellule d'électrolyse ignée présente des parois latérales, un fond et une évacuation de l'air rejeté,
    dans laquelle sur ou dans au moins une des parois latérales, du fond ou de l'évacuation de l'air rejeté, de préférence sur ou dans toutes les parois latérales et le fond et le plus préférentiellement également sur ou dans l'évacuation de l'air rejeté, des thermocouples sont agencés.
  11. Installation d'électrolyse ignée selon l'une quelconque des revendications 8 à 10, comprenant
    un échangeur de chaleur pour influer sur un apport de chaleur ou une sortie de chaleur au moyen d'un fluide caloporteur sur au moins une surface extérieure de la cellule d'électrolyse ignée et/ou
    un clapet de courant de gaz d'échappement réglable pour influer sur un courant volumique d'un gaz d'échappement de la cellule d'électrolyse ignée et/ou
    un dispositif pour modifier une composition chimique de la masse fondue, en particulier pour modifier un dosage d'AlF3 dans la masse fondue, et/ou
    une traverse pour le positionnement d'une anode dans la cellule d'électrolyse ignée.
  12. Installation d'électrolyse ignée selon l'une quelconque des revendications 8 à 11, comprenant un dispositif pour déterminer une masse de matériau à fondre introduit dans la cellule d'électrolyse ignée, en particulier de l'oxyde d'aluminium et de la cryolithe, et/ou un dispositif pour déterminer une masse de matériau fondu retiré de la cellule d'électrolyse ignée, en particulier de l'aluminium.
  13. Installation d'électrolyse ignée selon l'une quelconque des revendications 8 à 12, dans laquelle l'installation d'électrolyse ignée est raccordée à un réseau électrique pour assurer l'alimentation en énergie électrique pour l'électrolyse ignée.
  14. Utilisation d'un procédé de réglage selon la revendication 7 ou d'une installation d'électrolyse ignée selon la revendication 13 pour uniformiser les variations d'une alimentation en énergie dans le réseau électrique.
  15. Utilisation selon la revendication 14, dans laquelle l'énergie fournie par une source de courant volatile provient en particulier d'une installation éolienne et/ou d'une installation solaire.
EP16177980.6A 2016-07-05 2016-07-05 Installation a electrolyse ignee et procede de reglage de son fonctionnement Active EP3266904B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP16177980.6A EP3266904B1 (fr) 2016-07-05 2016-07-05 Installation a electrolyse ignee et procede de reglage de son fonctionnement
CN201710541196.9A CN107574461A (zh) 2016-07-05 2017-07-05 熔融电解设备及其运行的调节方法

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CN112210794B (zh) * 2019-07-10 2021-12-21 郑州轻冶科技股份有限公司 基于分子比的铝电解能量平衡调节方法、系统、铝电解槽
CN112210793B (zh) * 2020-10-19 2022-06-10 郑州轻冶科技股份有限公司 一种侧部带热管换热器的铝电解槽
CN115029735B (zh) * 2022-05-26 2024-01-30 中南大学 一种面向新能源消纳的铝电解热平衡调控装置及方法

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