CN107574461A - Fusion electrolysis equipment and its adjusting method of operation - Google Patents
Fusion electrolysis equipment and its adjusting method of operation Download PDFInfo
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- CN107574461A CN107574461A CN201710541196.9A CN201710541196A CN107574461A CN 107574461 A CN107574461 A CN 107574461A CN 201710541196 A CN201710541196 A CN 201710541196A CN 107574461 A CN107574461 A CN 107574461A
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- fusion electrolysis
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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
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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
- 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
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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
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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Abstract
The present invention relates to a kind of adjusting method for being used to run the electrolytic cell of fusion electrolysis equipment, the fusion electrolysis equipment is particularly for manufacturing aluminium.In the process, first controlled variable is the thermal balance of electrolytic cell.Moreover, it relates to a kind of fusion electrolysis equipment, the fusion electrolysis equipment is particularly for manufacturing aluminium, the fusion electrolysis equipment carries fusion electrolysis pond, wherein, fusion electrolysis equipment has adjustment equipment, and the adjustment equipment is configured to implement the adjusting method according to the present invention.
Description
Technical field
The present invention relates to a kind of method for being used to run the electrolytic cell of fusion electrolysis equipment, the fusion electrolysis equipment is especially used
In manufacture aluminium.Moreover, it relates to a kind of fusion electrolysis equipment, the fusion electrolysis equipment particularly for manufacturing aluminium, this is molten
Melt electrolysis installation and carry fusion electrolysis pond.
Prior art
All plans and part is implemented energy supply to so-called renewable in many industrial countries in the world
The energy promotes, to significantly reduce the gas that weather may be caused to damage, such as CO2Formation, and incrementally increase and break away from pair
The dependence of mineral energy carrier.
Regenerative resource can not be stored due to the storage medium that can not be used so far in proper range and then
Needed according to electric current called.In addition, only in corresponding energy source, the unstable energy especially from wind and the sun realize to
Electric transformation of energy and when realizing its input to power network, could input regenerative resource in power network.If dispensed with as slow
The mineral energy carrier of device is rushed, the current collector in power network must just make its electrical energy demands as far as possible with passing through renewable energy
The energy supply of source carrier matches.
With the trend it is especially relevant be the industrial branches with very high energies demand because decline can not be light for its electric current
Loose ground adapts to common current needs, and therefore can hardly be compensated by other current collectors.For this more particularly to
Aluminium manufactures, but the industrial branches in other industrial branches, especially chemical industry are also significantly affected by the development.
What instable energy source expanded utilizes the price not only resulted in for providing electric energy totally to improve, and also results in not
It can ensure to provide sufficiently large electric flux in power network all the time.Therefore problem is, particularly from the work in energy-intensive field
Industry equipment is be likely to the area discontinuously to power can not economically operation again.
Fusion electrolysis equipment is then controlled by inputting the current strength of electrolytic cell so far, wherein, it is related to relevant melting electricity
The fixed imagination of Xie Chi thermodynamic equilibrium.This in the case where keeping constant boundary condition, especially current drain, cell resistance,
It can be reliably achieved in the case that the thermodynamics in fusion electrolysis pond is set or waste gas discharge keeps constant.
Known fusion electrolysis method is control method in regulation technology field, and the control method is able to ensure that constant
, fabulous predeterminable boundary condition.With relatively large interval, for example determine once a day inside fusion electrolysis pond
Melt temperature.In addition equally with relatively large interval, for example it is determined that determining setting temperature when after the temperature of melt.
Another method is based on the determination to AlF3 contents in melt.Fusion electrolysis is passed through by necessary adjustment sometimes based on the numerical value
Voltage that pond declines and the thickness of stiff epidermis is maintained in practical scope.Such as contemplate for fusion electrolysis pond, when molten
When the temperature of body is higher than 8 DEG C of its setting temperature, stiff epidermis has suitable thickness.
From the A1 of German patent application DE 10 2,011 078656 of the applicant, learn a kind of for running melting electricity
The method for solving equipment, wherein, fusion electrolysis equipment is controlled in this wise so that by the electrical power of fusion electrolysis equipment consumption
The amount for measuring the electrical power with being supplied by instable energy source simultaneously matches.According to methods described herein, melting can be made
Electrolysis installation is applied in power network as " virtual battery ".The current drain of fusion electrolysis equipment is within the system limits of equipment
Consumed by correspondingly control electric current to match with possessed energy in power network.When current drain improves, unnecessary energy
Amount is discharged by the heat exchanger on the pool wall in fusion electrolysis pond, to avoid the stiff epidermis inside fusion electrolysis pond completely molten
Melt.When current drain reduces, the thermograde in the side wall in fusion electrolysis pond is reduced by heat exchanger, to avoid stiff epidermis
Grow too much.
But based on the known inventions of the A1 of document DE 10 2,011 078656, the operation to fusion electrolysis equipment still be present
When Improvement requirement because the control of the operation to fusion electrolysis pond is due to variable current drain and associated with it if necessary
Extra heat dissipation or heat input and therefore inaccuracy can't simultaneously ensure reliably in the case of variable current strength
Production procedure.
The content of the invention
In order to overcome the drawback, the technical problems to be solved by the invention are, there is provided one kind is used to run fusion electrolysis
Equipment, the method for the electrolytic cell of the fusion electrolysis equipment particularly for manufacturing aluminium, and a kind of fusion electrolysis equipment, particularly for
The fusion electrolysis equipment of aluminium is produced, it carries the availability ripple in corresponding fusion electrolysis pond, the thus electric energy in power network
Under dynamic precondition run fusion electrolysis equipment when can also realize economy and the reliable production procedure of process.
The technical problems to be solved by the invention are, there is provided a kind of adjusting method and fusion electrolysis of above-mentioned technical field
Equipment, fusion electrolysis thus also can be reliably run in the case of the change in availability of electric energy, especially without extraly loading
Fusion electrolysis pond or the efficiency for reducing fusion electrolysis, the especially manufacture of aluminium.
Above-mentioned technical problem is used to run fusion electrolysis equipment according to the present invention by one kind, particularly for the molten of manufacture aluminium
Melt adjusting method, a kind of fusion electrolysis equipment and one kind of the electrolytic cell of electrolysis installation to the adjusting method or fusion electrolysis
The application of equipment solves.
According to the present invention be used for run fusion electrolysis equipment, particularly for manufacture aluminium fusion electrolysis equipment electrolytic cell
Method be characterised by that the first controlled variable is the thermal balance of electrolytic cell.
In the present invention, " regulation " is understood to a kind of process, constantly obtains numerical value " controlled variable " in this process,
Controlled variable is influenceed compared with other numerical value " reference variable ", and in order to be adapted with reference variable.Regulation
The workflow of closure is typically characterized by, wherein, controlled variable is in the operating path of regulation circulation constantly from influence.
In the present invention, " regulation " is also understood to a kind of process, in this process lasting simulation " controlled variable ", and non-measured
" controlled variable ", controlled variable is influenceed compared with " reference variable ", and in order to be adapted with reference variable.I.e.
The characteristic feature for the form for making to adjust in scope of the invention is also the workflow of closure, wherein, controlled variable is being adjusted
Constantly from influence in the operating path of circulation.But can also be according to simulation program, such as the heat from fusion electrolysis pond
The formulation of the simulation program of output is measured, abandons the direct measurement to heat output or measurement indirectly, but export according to heat
Simulation and determine the heat export.
So far, the guarantee to stable fusion electrolysis method in scope is only that the holding in electrolytic cell is constant
Electrolysis temperature.
In power network in the case of power availability change, it is necessary to deviate the method for operation so far.Substitute to keep not
The electrolysis temperature of change and stiff epidermal thickness and the control of the operation to fusion electrolysis pond, according to the present invention to fusion electrolysis pond
Operation is adjusted, i.e. electrolysis temperature is in relatively wide temperature band.This passes through on regulation technology according to the present invention
Consider that thermal balance is realized.
In scope of the invention, thermal balance is understood to energy balance, and the energy balance considers to enter fusion electrolysis
Electric energy in pond and the heat energy discharged from fusion electrolysis pond.It is preferred that in the case of aluminium electrolytic equipment in other words aluminium electrolysis cell,
Also determine into share used in the manufacture for aluminium of the electric energy of aluminium electrolysis cell.Alternately, into the electric energy of aluminium electrolysis cell
The share be assumed it is constant, and with the share that form of heat is inputted in aluminium electrolysis cell by total electric energy with it is assumed that constant
Be used for produce energy between difference determination.
Therefore, according to the thermal balance in present invention detection fusion electrolysis pond, and according to the thermal balance tune as controlled variable
Save the operation in fusion electrolysis pond.
It is preferred that using the equipment of one or more thermocouples and/or the volume flow of the waste gas for determining electrolytic cell, especially
It is the equipment of measuring apparatus and/or the volume flow for determining the heat-transfer fluid in the heat exchanger on electrolytic cell, especially measures
Equipment, which is used as, to be used to determine the first controlled variable, namely a thermally equilibrated measuring cell or multiple measuring cells.
Preferably, at least six, preferably at least 12, further preferably at least 30, further preferred at least 60 thermoelectricity
Occasionally it is arranged on electrolytic cell, so as to determine the Temperature Distribution and and then thermal balance on electrolytic cell as precisely as possible.
It is especially molten with more than one according to all fusion electrolysis ponds of a kind of embodiment, not fusion electrolysis equipment
The only one fusion electrolysis pond for melting the fusion electrolysis equipment of electrolytic cell is provided with the occasionally multiple thermocouples of a thermoelectricity.This simplifies whole
The structural consuming of individual equipment, and the expected purpose of the controllable operation of fusion electrolysis equipment is realized as far as possible.
Thermocouple can either individually or collectively be used as the measuring cell in regulation technology meaning.This is basically also applicable to
The volume flow of the waste gas of electrolytic cell is determined, quality stream can also be determined as to the alternative of volume flow and supplement, and preferably also
The information of the temperature about waste gas can be determined.
The equipment of this volume flow for being used to determine to discharge from the waste gas of electrolytic cell is conducted heat for determination in heat exchanger
The equipment of the volume flow of fluid can also for example by determining the rotary speed working of fan or respective element, this can also indirectly,
Such as energy expenditure or (rotation) scope work for the motor for passing through driving fan.Waste gas or heat transfer are can determine by this way
The volume flow of fluid, without volume flow described in direct measurement, because at least being formed with obvious ratio through fan or corresponding
The volume flow of element.Nevertheless, being determined as volume flow " can also be surveyed in the regulation of the operation in fusion electrolysis pond
Amount " processing.
So-called heat-transfer fluid especially can be air, the air can for example in substantially known heat exchanger edge
Pool wall guides.In terms of heat-transfer fluid in addition to volume flow or substitution volume flow, quality stream can also be determined, and preferably
The temperature of heat-transfer fluid can also be determined.Heat exchanger can utilize corresponding temperature adjustment cooling of the heat-transfer fluid to fusion electrolysis pond or
The degree of thermal losses influences and therefore especially to thickness effect of the stiff epidermis along its edge, and is thus influenceed from many aspects
Thermal balance.
It is preferred that adjusting method, especially apparatus described above thermocouple, the volume flow for determining the waste gas from electrolytic cell
Measuring apparatus and the volume flow for determining the heat-transfer fluid in heat exchanger on electrolytic cell measuring apparatus be adapted to and
Designed for continuously obtaining the heat of input electrolytic cell and the heat from electrolytic cell discharge.Thus particularly simply realize
It is that thermal balance is used as controlled variable.But also there is alternative in addition to above-mentioned possible measuring cell, such as hot shooting
Head, to support thermally equilibrated determination.
In a preferred embodiment, electrolytic cell has side wall, bottom and waste gas guidance part, wherein, at least one
On individual side wall, bottom or waste gas guidance part or at least one side wall, bottom or waste gas guidance part, preferably in all side walls and
On bottom or in all side walls and bottom, and particularly preferably even arranged on waste gas guidance part or in waste gas guidance part
Thermocouple be used as be used for determine thermally equilibrated measuring cell.Alternately it is also feasible that only some side walls, only bottom,
Only waste gas guidance part or its combine for arranging thermocouple as measuring cell.
Preferably, at least one heat exchanger and/or the chemical composition of at least one waste gas stream valve and/or melt, especially
AlF3Dosage and/or at least one cross bar for being positioned at least one anode in electrolytic cell are used for shadow as control element
Ring heat input and/or heat output.By said elements it is achieved that change heat is defeated in relatively wide scope
Enter and/or heat exports, wherein, heat input or heat output utilize as controlled variable in thermally equilibrated regulation.Substantially
Other upper also existing possibilities are to change heat input or heat output, but said elements are in the situation in fusion electrolysis pond
Under be considered as particularly effective.
Preferably, in the case where changing the current strength for being melted electrolysis installation or the consumption of fusion electrolysis pond, to passing through
The voltage that fusion electrolysis pond declines takes corresponding adjustment, and the current strength fatefully defines energy input and thus heat
Input.This can especially be realized by the spacing changed between an anode or multiple anodes and a negative electrode or multiple negative electrodes.
The raising of electric current in principle inputs more heats in fusion electrolysis pond at this, and distance between the reduction of voltage, i.e. electrode
Reduction cause substantially lower heat to input.Preferably, it is additionally further by adjusting waste gas stream valve or heat exchanger
Influence to export from the heat in fusion electrolysis pond, because the change of heat input can be more efficiently more real than the change that heat exports
It is existing.
Advantageously, melted material, the especially charging of aluminum oxide and hexafluoro sodium aluminate and/or molten material will be treated, such as
The discharging of aluminium and/or the change of fusion electrolysis current strength are thought of as interference volume.Treat that the charging of melted material not only changes electrolysis
The temperature in pond, but also change the chemical composition of electrolytic cell, this influences the thermal balance of the operation in fusion electrolysis pond.Similarly also fit
For discharging, namely the taking-up of molten material, the molten material extracts heat energy from system first, and also part changes
The chemical composition of system.Fusion electrolysis current strength changes energy input and therefore changes the heat of input.Current strength is especially
Energy that can be based on the change being present in power network and the fusion electrolysis control that thus brings are in itself and within the specific limits not
Controllably change.By considering that thermal balance can contemplate the effect reached by the change of fusion electrolysis current strength, so as to
Ensure, it may be considered that all consequences of the current strength of change in terms of process safety.
In a kind of preferred embodiment of the adjusting method, the second controlled variable or controlled quentity controlled variable are the heat of electrolytic cell
Mechanical state, and the 3rd controlled variable or the 3rd controlled quentity controlled variable are the chemical states of electrolytic cell.In the present invention, the heat of electrolytic cell
The temperature of mechanical state especially electrolyte is interpreted as conclusive numerical value.The other elements of certain electrolytic cell also influence electricity
Xie Chi thermodynamic state.But the most important part of electrolytic cell is electrolyte, because the temperature of electrolytic cell is in any situation
Under must all be kept above the setting temperature of electrolyte, to make fusion electrolysis equipment remain able to work.The chemistry of electrolytic cell
Therefore state then mainly determined by the setting temperature of electrolyte, the setting temperature especially with " AlF3Surplus " is related.
According to the fusion electrolysis equipment of the present invention, fusion electrolysis pond is carried particularly for the fusion electrolysis equipment for manufacturing aluminium,
Characterized in that, fusion electrolysis equipment has adjustment equipment, the adjustment equipment is designed to carry out above-mentioned adjusting method.
Fusion electrolysis equipment preferably includes the measurement of the volume flow of thermocouple and/or the waste gas for determining fusion electrolysis pond
Equipment and/or if preferably including heat exchanger, for by the heat-transfer fluid shadow at least one outer surface in fusion electrolysis pond
Ring heat input or heat output, then fusion electrolysis equipment also includes being used to determine in the heat exchanger on fusion electrolysis pond
The measuring apparatus of the volume flow of heat-transfer fluid.As described above, the element is admirably suitable as measuring cell use in basis
In the regulation of the present invention, because the element provides the thermal balance that strong information is used to determine fusion electrolysis pond, and therefore
It can be particularly easy to implement the regulation.
The fusion electrolysis pond of preferable fusion electrolysis equipment has side wall, bottom and waste gas guidance part, wherein, at least one
On individual side wall, bottom or waste gas guidance part or at least one side wall, bottom or waste gas guidance part, the side preferably in whole
On wall, bottom or waste gas guidance part or in the side wall in whole, bottom or waste gas guidance part, side wall, bottom preferably in whole
Above or in the side wall of whole, bottom and particularly preferably also on waste gas guidance part or in waste gas guidance part arrange thermoelectricity
It is even.This can realize the thermally equilibrated determination to fusion electrolysis pond particularly well, and therefore be particularly well suited to according to this
In the case of invention.
Advantageously, fusion electrolysis equipment includes heat exchanger, for by least one outer surface in fusion electrolysis pond
Heat-transfer fluid influence heat input or heat output, and/or including adjustable waste gas stream valve, for influenceing fusion electrolysis
The volume flow of the waste gas in pond, and/or including the chemical composition for changing melt, especially with AlF in change melt3Dosage
Equipment, and/or including the cross bar for being positioned at anode on fusion electrolysis pond.By being previously mentioned in regulation technology category
The element used as control element, it can be adjusted by effective manner and method in wider scope and change heat damage
Consumption and heat input, so as to which thermal balance is as well as possible and effectively match with its rated value.Other shadows in principle also be present
Thermally equilibrated possibility is rung, but therefore these other possibilities less act on effectively and inefficiently.
Furthermore it is preferred that fusion electrolysis equipment also include being used to determine the melted material for the treatment of inserted in fusion electrolysis pond, especially
The equipment of the quality of its aluminum oxide and hexafluoro sodium aluminate, and/or for determining the molten material from the extraction of fusion electrolysis pond, especially
The equipment of the quality of its aluminium.Insert electrolytic cell and the material that is extracted from electrolytic cell not only by the way that heat is extracted from system or
The mode brought into system changes thermal balance, but also partly changes the chemical composition of the thing inside fusion electrolysis pond, this
Especially the setting temperature of electrolyte is had an impact, and therefore should be considered in thermally equilibrated regulation.To be illustrated for this
It is that the change of the temperature of the material in electrolytic cell is because thus the change of the thickness of the stiff epidermis in caused edge is to melt
Chemical composition have an impact.The raising of temperature causes the further melting of stiff epidermis and thus AlF in melt3The drop of share
It is low.Because last-mentioned process has a certain degree of inertia and reciprocating motion, in the current strength of input electrolytic cell
And then determine that chemical composition has error after changing.By can compensate for the error according to the regulation of the present invention and keep away
Exempt from false demonstration.
According to the present invention, as long as fusion electrolysis equipment is connected on power network, to provide electric energy for fusion electrolysis, speech is changed
It, wherein inputting the electric current for electrolytic cell operation from power network, uses above-mentioned adjusting method or above-mentioned fusion electrolysis in power network
Equipment, fluctuation caused by for compensating energy supply.This fluctuation cause to supply and consume between it is unbalance, this is when most short
The interior frequency departure and/or voltage deviation caused in power network, the frequency departure and voltage deviation endanger the stable fortune of power network
Go and therefore in order to avoid mains breakdown (" power-off ") must correct in time.According to the fusion electrolysis equipment or use of the present invention
It is designed to realize with different power of taking within system bound in the adjusting method for running the fusion electrolysis equipment
The operation of fusion electrolysis equipment, thus fusion electrolysis method can be admirably unbalance simultaneously for compensating power-balance as buffer
And the and then stabilization of power grids.
This is particularly advantageous when being supplied energy and coming from unstable power supply, especially wind power equipment or solar power plant
's.Because by application according to the present invention, when the ratio of unstable power supply is relatively large in the energy for inputting power network
Also grid stability can be ensured in related boundary, without forming the more high cost for grid stability.This first can
It is enough simultaneously therefore to use all possible regenerative resource using the unstable power supply of larger share actually in industrial country.
The other technical characteristics and advantage of the present invention provide in the following drawings explanation and whole claims.
Brief description of the drawings
Fig. 1 shows to carry out the diagram of preferable process control by the real-time thermal balance regulation of closure.
Fig. 2 shows the schematic diagram in preferable fusion electrolysis pond.
Embodiment
Fig. 1 shows to carry out the diagram of preferable process control by the real-time thermal balance regulation of closure.Thermal balance is set
For as reference variable w (t).Thermally equilibrated adjusting deviation e (t), namely thermal balance and the deviation of rated value pass through adjuster root
According to thermal balance feedback quantity ym(t) compensate.Adjuster is by reference to variable w (t) and feedback quantity ym(t) comparison between, which calculates, has surveyed
Obtain thermal balance amount y (t) and reference variable w (t) deviation and determine corresponding counter-measure, to make controlled variable according to ginseng
Variable is examined to be adjusted.
Regard thermal losses or heat input as general control amount u (t).In order to adjust general control amount u (t), adjuster
Such as heat exchanger can be influenceed, to the electrolytic cell chemistry and voltage inside waste gas stream valve, fusion electrolysis pond.Device can be conditioned
The specific controlling value u influenceedS(t) it may, for example, be AlF in the valve position being present in waste gas guidance part, electrolytic cell3Agent
The flowing velocity of heat-transfer fluid or cross bar position in amount, heat exchanger, namely phase of one or more anodes in fusion electrolysis pond
To position, an anode/multiple anodes on cross bar can be adjusted by the relative position and be used as the moon in aluminium electrolysis cell
Spacing between the aluminium liquid of pole or common negative electrode.Therefore controlled plant refers to fusion electrolysis pond together with its building block, such as
Heat exchanger if necessary, waste gas guidance part, cross bar, fan, valve etc..
Thus it is also conceivable to being regarded as interference value d (t) external action, the current strength for being particularly based on power network fluctuation becomes
The production efficiency changed, changed during the operability effect on fusion electrolysis pond or manufacture aluminium.Because these interference value shadows
Ring the thermal balance in fusion electrolysis pond, it is possible to remove interference value by way of according to the present invention.
Thermal balance can for example by for measure the thermocouple of the temperature on side wall, bottom and waste gas guidance part with and
By for determining that the element of waste gas and the volume flow for the heat-transfer fluid that may flow through heat exchanger is determined together with analytic unit.It is logical
The data input adjuster that measuring cell is measured and analyzed is crossed, adaptedly to adjust corresponding control element.
Generally it can determine, the heat in fusion electrolysis pond is mainly formed in the region of anode-cathode spacing.Electric current
Intensity rise time away from reduction and current strength reduce when gap increase be used for adjust thermally equilibrated first measure.Thus
The Ohmic resistance in fusion electrolysis pond changes, this within certain limit, especially by between the minimum between anode and aluminium liquid
Away from and the method for energy efficient determined by be feasible in boundary.In addition it is also feasible that when the energy provided by power network
When otherwise can not maintain fusion electrolysis process again, by optional heat exchanger, such as the heat exchange in the side wall in fusion electrolysis pond
Heat is exported and inputs fusion electrolysis pond by device from fusion electrolysis pond.Waste gas stream can additionally be changed, and pass through the party
Formula equally influences the thermal balance in fusion electrolysis pond.The raising of waste gas stream increase heat output, and the reduction of waste gas stream play every
From effect.
By this way it is achieved that fusion electrolysis equipment, especially aluminium electrolytic equipment are not requiring to be provided by power network
It can be run cost-effectively in the case of constant current strength.
Fig. 2 shows the schematic diagram of fusion electrolysis equipment, and it carries fusion electrolysis pond 30.The side of fusion electrolysis pond 30 leads to
The limited boundary of pool wall 32 is crossed, and additionally there is bottom of pond 34, the bottom of pond 34 is simultaneously as the moon for fusion electrolysis method
Pole plays a role inside electrolytic cell 30.Have inside electrolytic cell 30 from the anode 36 and melt for above protruding into electrolytic cell 30
38th, 35.1, the melt has the aluminium of hexafluoro sodium aluminate and melting in addition.In the embodiment shown in figure 2, closely molten
Melt and heat exchanger 39 is disposed with the pool wall 32 of electrolytic cell 30, fluid, such as air, CO are guided by the heat exchanger 392, nitrogen
Or liquid.Heat exchanger 39 is particularly preferably connected by pipe-line system 31 with storage heater 33 herein, and the storage heater 33 is for example logical
Cross convection type storage heater or latent heat accumulator is formed.
In the case of the energy expenditure height in fusion electrolysis pond 30, big calorimetric is discharged by electrolyte inside electrolytic cell
Can, the heat energy discharges upwards from electrolytic cell by its side wall 32 and bottom of pond 34 and by waste gas.It is expected that the heat of release exists
This is defined as so that the stiff epidermis (hardboard) 35.2 for the melt 35.1 for forming solidification on the inner side of pool wall 32 is used as protective layer.
Stiff epidermis 35.2 changes only in terms of its thickness according to the thermal balance of melting connection pool.
It is too low based on fusion electrolysis pond electric power consumption if necessary and by heat from outer input, it is or in other words necessary
The heat from electrolytic cell output is reduced so as not to which stiff epidermis 35.2 can be allowed to become too much, can be by pipe-line system 31 by heat
Heat exchanger 39 is directed to from storage heater 33.It is possible thereby to effectively heat the inside in fusion electrolysis pond by pool wall 32, mode be to
External radiation goes out less heat, because the temperature difference between the inside of electrolytic cell and the outside of pool wall 32 reduces, and thus hinders
The solidification of melt is stopped.Waste gas being siphoned away upwards by changing or being blocked can also realize identical effect.
Adjusting means 37 is configured to run the electrolytic cell of fusion electrolysis equipment, flat so as to adjust its heat as described above
Weighing apparatus.Therefore, fusion electrolysis pond is in its side wall, bottom and even abuts against waste gas guidance part on fusion electrolysis pond at an upper portion thereof
Region includes multiple (unshowned) thermocouples.The measurement result input regulating device 37 obtained by thermocouple, and adjusting
Operation in regulating device for regulation fusion electrolysis pond is analyzed.
By running this fusion electrolysis equipment, can except manufacture such as aluminium while also by power network even in supply not
Still keep stable in the case of stabilized power source, without employing special (currently can not in enough scopes available) memory
And similar device.
Claims (15)
1. a kind of adjusting method for being used to run the electrolytic cell of fusion electrolysis equipment, the fusion electrolysis equipment is particularly for manufacture
Aluminium, wherein, first controlled variable is the thermal balance of electrolytic cell.
2. adjusting method according to claim 1, wherein, thermocouple and/or the body for determining the waste gas from electrolytic cell
Accumulate the equipment of stream and/or for determining the equipment of the volume flow of heat-transfer fluid in the heat exchanger on electrolytic cell in the electrolytic cell
As the measuring cell for determining the first controlled variable.
3. adjusting method according to claim 1 or 2, wherein, side wall has side wall, bottom and waste gas guidance part, wherein,
On at least one side wall, bottom or waste gas guidance part or at least one side wall, bottom or waste gas guidance part, preferably complete
In portion's side wall and bottom or in whole side walls and bottom and particularly preferably even on waste gas guidance part or in waste gas guidance part
The thermocouple of middle arrangement is used as the measuring cell for determining the first controlled variable.
4. the adjusting method according to any one of the claims, wherein, at least one heat exchanger and/or at least one
The chemical composition of waste gas stream valve and/or melt, especially AlF3Dosage and/or it is at least one be used at least one anode is determined
Cross bar of the position on electrolytic cell is used as the control element for influenceing heat input and/or heat output.
5. the adjusting method according to any one of the claims, wherein, melted material, especially aluminum oxide and six will be treated
The charging of cryolite and/or molten material, such as the change of the pan feeding of aluminium and/or Faradaic current intensity are thought of as disturbing
Amount.
6. the adjusting method according to any one of the claims, wherein, the second controlled quentity controlled variable or the second controlled variable are
The thermodynamic state of electrolytic cell, wherein, the 3rd controlled quentity controlled variable or the 3rd controlled variable are the chemical states of electrolytic cell.
7. the adjusting method according to any one of the claims, wherein, for electric current used in operation electrolytic cell certainly
Power network inputs.
8. a kind of fusion electrolysis equipment, it carries fusion electrolysis pond, its feature particularly for manufacturing aluminium, the fusion electrolysis equipment
It is, fusion electrolysis equipment has adjustment equipment, and the adjustment equipment is configured to implement according to any in the claims
Adjusting method described in.
9. fusion electrolysis equipment according to claim 8, it especially includes heat exchanger, for by fusion electrolysis pond
Heat-transfer fluid at least one outer surface influences heat input or heat output, wherein, fusion electrolysis pond have thermocouple and/
Or for determination from the measuring apparatus of the volume flow of the waste gas in fusion electrolysis pond and/or for determining changing on fusion electrolysis pond
The measuring apparatus of the volume flow of heat-transfer fluid in hot device.
10. fusion electrolysis equipment according to claim 8 or claim 9, wherein, fusion electrolysis pond has side wall, bottom and waste gas
Guidance part, wherein, guided at least one side wall, bottom or waste gas guidance part or at least one side wall, bottom or waste gas
In portion, preferably in whole side walls and bottom or in whole side walls and bottom and particularly preferably even on waste gas guidance part
Or it is disposed with thermocouple in waste gas guidance part.
11. the fusion electrolysis equipment according to any one of claim 8 to 10, it includes
Heat exchanger, for influenceing heat input or heat by the heat-transfer fluid at least one outer surface in fusion electrolysis pond
Output, and/or
Adjustable waste gas stream valve, the volume flow of the waste gas for influenceing fusion electrolysis pond, and/or
For changing the chemical composition of melt, especially with AlF in change melt3Dosage equipment, and/or
For the cross bar being positioned at anode in fusion electrolysis pond.
12. the fusion electrolysis equipment according to any one of claim 8 to 11, it includes inserting fusion electrolysis for determination
The equipment of the quality for treating melted material, especially aluminum oxide and hexafluoro sodium aluminate in pond, and/or for determining from fusion electrolysis pond
The equipment of the molten material, the especially quality of aluminium of extraction.
13. the fusion electrolysis equipment according to any one of claim 8 to 12, wherein, fusion electrolysis equipment is connected to electricity
On the net, to provide electric energy for fusion electrolysis.
It is 14. a kind of to adjusting method according to claim 7 or fusion electrolysis equipment according to claim 13
Using fluctuation caused by for compensating in energy input power network.
15. application according to claim 14, wherein, the energy being supplied comes from unstable power supply, especially wind power equipment
And/or solar power plant.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16177980.6 | 2016-07-05 | ||
| EP16177980.6A EP3266904B1 (en) | 2016-07-05 | 2016-07-05 | Molten salt electrolysis system and control method for operation of the same |
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| Publication Number | Publication Date |
|---|---|
| CN107574461A true CN107574461A (en) | 2018-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710541196.9A Pending CN107574461A (en) | 2016-07-05 | 2017-07-05 | Fusion electrolysis equipment and its adjusting method of operation |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3266904B1 (en) |
| CN (1) | CN107574461A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112210794B (en) * | 2019-07-10 | 2021-12-21 | 郑州轻冶科技股份有限公司 | Aluminum electrolysis energy balance adjusting method and system based on molecular ratio and aluminum electrolysis cell |
| CN112210793B (en) * | 2020-10-19 | 2022-06-10 | 郑州轻冶科技股份有限公司 | Aluminum electrolytic cell with heat pipe heat exchanger on side part |
| CN115029735B (en) * | 2022-05-26 | 2024-01-30 | 中南大学 | Aluminum electrolysis heat balance regulating and controlling device and method for new energy consumption |
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| Publication number | Publication date |
|---|---|
| EP3266904B1 (en) | 2021-03-24 |
| EP3266904A1 (en) | 2018-01-10 |
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