CN117248245A - System and method for strengthening molten salt electrolysis process by utilizing power ultrasound - Google Patents
System and method for strengthening molten salt electrolysis process by utilizing power ultrasound Download PDFInfo
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- 150000003839 salts Chemical class 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 28
- 238000005728 strengthening Methods 0.000 title claims abstract description 12
- 239000003792 electrolyte Substances 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 21
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- 229910018179 Al—F Inorganic materials 0.000 description 2
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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
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- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention relates to a system and a method for strengthening a molten salt electrolysis process by utilizing power ultrasound, wherein the method comprises the steps of applying ultrasonic waves to an electrolytic cell comprising electrolyte; the system comprises a control system, an ultrasonic generator and an ultrasonic vibration assembly, wherein the control system is connected with the ultrasonic generator, and the ultrasonic generator is arranged on the electrolytic tank through the ultrasonic vibration assembly and contacts electrolyte. The invention solves the problem that the effect of reducing the power consumption is limited by component optimization at present, adopts an ultrasonic control fused salt cluster structure, and expands the space for reducing the power consumption.
Description
Technical Field
The invention relates to the field of molten salt electrolysis, in particular to a system and a method for strengthening a molten salt electrolysis process by utilizing power ultrasound.
Background
Molten salt electrolysis is the most important method for refining active metals, and high power consumption is the core problem to be solved. For example, the Hall-He' roul electrolytic method is the only method adopted in industrial production, the current efficiency is gradually improved to between 85 and 95 percent after more than 130 years of development, the power consumption per ton of aluminum is gradually reduced to between 13000 and 15000 kW.h, but still about 2 times of the theoretical power consumption. If rare earth neodymium is produced by electrolysis, the electricity consumption is about 10 kW.h/kg, which is 7 times of the theoretical value. China is a large country for producing metal such as raw aluminum and rare earth in the world, the annual output of the raw aluminum is close to 60% of the total output in the world, and the smaller technical progress brings remarkable economic benefit and environmental benefit.
One factor affecting the power consumption of electrolysis is the current efficiency. The current efficiency is determined by the electron conductivity and the amount of cyclic electrolysis of the metal, the higher the electron conductivity and the amount of cyclic electrolysis, the lower the current efficiency. Under certain conditions of an electrolytic tank structure, the current efficiency is mainly influenced by molten salt chemical components, the temperature of the electrolytic tank and the flowing state of the molten salt, and the factors jointly determine the capability of dissolving/carrying metal by the molten salt, so that the electron conductivity and the circulating electrolysis degree generated by secondary oxidation are influenced.
The decisive factors influencing the consumption of the electrolysis are the cell voltage, which consists of the metal reduction voltage, the resistance voltage and the electrode overvoltage. The resistance voltage is composed of an electrode voltage and a fused salt voltage, and is mainly determined by the fused salt voltage and basically determined by the conductivity of the fused salt under certain conditions of electrode materials and structures. The conductivity of the molten salt is closely related to the migration and diffusion capability of ions in the molten salt, the ion diffusion capability is mainly determined by the size of the molten salt, and small-size ions are beneficial to improving the conductivity. Molten salt systems generally consist of alkali metal cations, free fluoride ions and anionic clusters of varying degrees of polymerization, i.e. their conductivity is essentially determined by the microstructure of the molten salt.
The electrode overvoltage is composed of a concentration overvoltage, a resistance overvoltage and an electrochemical overvoltage. Wherein the concentration differential overvoltage is dominant and is also dependent on the diffusion capacity of the reactants. For the cathode, it is mainly represented by the effect of complex anions and ion group diffusion; for the anode, the overvoltage is significantly higher than that of the cathode, and is mainly represented by the influence of oxygen-containing composite anions and ion group diffusion thereof. In particular, when the oxygen-containing anionic group concentration is too low, the groups are more likely to bridge together to form higher polymerization groups, which have weaker diffusion capability at the boundary layer, which will lead to the anode to precipitate out CO 2 CF other than CO 4 And C 2 F 6 And a fluorocarbon gas such as a fluorine-containing gas,thereby preventing the molten salt from contacting the anode surface to generate additional resistance, and further causing the cell voltage to rise sharply, i.e., anode effect occurs. The greenhouse effect of fluorocarbons is significant, which is another important problem that electrolysis needs to solve.
In summary, the electrolysis electricity consumption is mainly influenced by the conductivity and the concentration overvoltage of the molten salt, and the two influencing factors of the conductivity and the concentration overvoltage of the molten salt are closely related to the ion transmission behavior in the molten salt, wherein the ion transmission behavior is essentially determined by the cluster structure of the molten salt. The cluster structure of the molten salt is determined by chemical components of the molten salt, taking aluminum electrolysis as an example, since the development of a Hall-He' roul electrolysis method, the chemical components of the molten salt are continuously optimized, nearly to the limit, and the space for regulating and controlling the cluster structure of the molten salt through component optimization so as to reduce the electricity consumption is smaller and smaller.
Disclosure of Invention
The technical problems to be solved are as follows:
the invention provides a system and a method for strengthening a molten salt electrolysis process by utilizing power ultrasound, which aim to improve a cluster structure of molten salt by regulating and controlling a microstructure of the molten salt by ultrasound, strengthen a mass transfer process in an electrolysis tank and break through the problem that the effect is still not ideal because the electrolysis process is strengthened only by component optimization.
The technical scheme is as follows:
the first aspect of the invention proposes a method of enhancing a molten salt electrolysis process using power ultrasound, applying ultrasound to an electrolytic cell comprising an electrolyte.
Further, the electrolyte is a molten salt electrolyte.
The second aspect of the invention provides a system for strengthening a molten salt electrolysis process by utilizing power ultrasound, which comprises a control system, an ultrasonic generator and an ultrasonic vibration assembly, wherein the control system is connected with the ultrasonic generator, and the ultrasonic generator is arranged on an electrolytic tank through the ultrasonic vibration assembly and is contacted with an electrolyte;
and (3) a control system: for localized control of ultrasonic emissions;
ultrasonic generator: for outputting a stable amplitude;
ultrasonic vibration assembly: for generating ultrasonic vibrations, converting electrical energy into mechanical energy, and transmitting the mechanical energy to the target electrolyte.
Preferably, when the anode of the electrolytic tank is a metal inert anode, the ultrasonic vibration component and the metal inert anode are integrally arranged.
Preferably, when the anode of the electrolytic tank is a carbon anode, the ultrasonic vibration assembly consists of an ultrasonic transducer, an amplitude transformer and a tool head which are connected in sequence;
the number of the ultrasonic vibration components is one or more times of the number of the carbon anodes;
the ultrasonic transducer: for generating regular ultrasonic vibrations under the excitation of an electric field;
the amplitude transformer: for changing the original ultrasonic amplitude generated by the ultrasonic transducer to be suitable for a specific target;
the tool head: for transmitting ultrasonic vibrations output by the horn into the molten salt dielectric.
Furthermore, the ultrasonic transducer adopts a piezoelectric transduction mode.
Further, the amplitude transformer is made of high-temperature alloy.
Further, the tool head is made of high-temperature alloy and is connected with the amplitude transformer through threads; the tool head comprises any one of a cylindrical structure, a square structure or other special-shaped structures according to the cathode-anode structure in the electrolytic tank and contacts a dielectric medium.
Further, the structure of the ultrasonic vibration assembly is adapted to the structure of the electrolytic cell, so that the ultrasonic vibration assembly can be mounted to the electrolytic cell through a side portion, an upper portion or a lower portion of the electrolytic cell and contact the electrolyte.
Aiming at the urgent requirements of energy conservation and emission reduction in the molten salt electrolysis industry, power ultrasound is introduced into a molten salt electrolysis system, and the molten salt electrolysis process is strengthened by regulating and controlling the microstructure of the molten salt, so that the following beneficial effects are obtained:
(1) Under the action of ultrasound, the fused salt ion clusters are depolymerized to reduce the size, the viscosity of the fused salt is reduced, and the ion diffusion coefficient is increased, so that the electric conductivity of the fused salt is improved to reduce the electrolyte voltage;
(2) The method is beneficial to improving the ion supply rate of the boundary layer so as to reduce the concentration difference overvoltage;
(3) The adsorption density of the double electric layers is improved, the discharge resistance is reduced, and the electrode activation overvoltage is reduced;
(4) The reduction of the fused salt voltage drop and the overvoltage is favorable for reducing the power consumption, particularly the concentration overvoltage, the electrolysis precipitation of metal sodium is favorable for reducing at the cathode to improve the current efficiency, and the occurrence probability of the anode effect is favorable for reducing at the anode to reduce the emission of greenhouse gases.
(5) The oxygen bond of the ion cluster is broken, and free fluorine ions enter the cluster structure to reduce the concentration, so that the solubility of metal aluminum is reduced to improve the current efficiency.
(6) In the prebaked cell aluminum electrolysis process, the power consumption per ton of aluminum is obviously reduced.
Drawings
FIG. 1 is a schematic diagram of a system according to the present invention;
FIG. 2 is a schematic diagram of the positional relationship between the tool head of the first ultrasonic vibration assembly and the metal inert anode (E represents the anode in the figure);
FIG. 3 is a schematic diagram of the positional relationship between the tool head of the second ultrasonic vibration assembly and a metal inert anode (E represents the anode in the figure);
FIG. 4 is a schematic illustration of the tool head of a third ultrasonic vibration assembly in relation to a metal inert anode (E represents the anode in the figure);
the drawing is marked: 1. the control system comprises a control system body 2, an ultrasonic generator 3, an ultrasonic transducer 4, an amplitude transformer 5, a tool head 6 and an electrolytic tank.
Detailed Description
The invention is described in more detail below with reference to the drawings accompanying the specification.
Besides component regulation, changing the fused salt cluster structure by inputting some form of external energy is another important direction, wherein the ultrasonic wave has the characteristics of good directivity, strong penetrating power and easy acquisition of concentrated energy, and has great application potential. Along with the development of ultrasonic generators, transduction materials and control technologies thereof, ultrasonic waves are widely applied in the fields of material processing and preparation, military, medical treatment, environmental protection, chemical industry and the like. Ultrasonic interactions with the medium can produce a range of physicochemical effects, particularly cavitation effects, which produce transient high temperatures (5000K) and high pressures (20 MPa) and high shear flows that can alter the medium structure and promote or accelerate certain chemical reactions. In particular, for organic macromolecular polymers, the C-C bonds or C-N bonds in the chain or network structure can be broken under an ultrasonic field to form structural units with smaller molecular weights, which are manifested by reduced molecular weights and physical property transition, i.e., degradation behavior.
For molten salt, the connection bonds of the cluster structures in the aluminum electrolysis molten salt are Al-O bonds and Al-F bonds, and the connection bonds of the cluster structures in the rare earth or rare earth alloy electrolysis molten salt are RE-O bonds and Al-F bonds, so that under the ultrasonic action of the chemical bonds, the molten salt ion clusters can be depolymerized to reduce the size, the viscosity of the molten salt is reduced, the ion diffusion coefficient is increased, and the conductivity of the molten salt is improved to reduce the electrolyte voltage; the method is beneficial to improving the ion supply rate of the boundary layer so as to reduce the concentration difference overvoltage; the adsorption density of the double electric layers is improved, the discharge resistance is reduced, and the electrode activation overvoltage is reduced; the reduction of the fused salt voltage drop and the overvoltage is favorable for reducing the power consumption, particularly the concentration overvoltage, the electrolysis precipitation of metal sodium is favorable for reducing at the cathode to improve the current efficiency, and the occurrence probability of the anode effect is favorable for reducing at the anode to reduce the emission of greenhouse gases. The oxygen bond of the ion cluster is broken, and free fluorine ions enter the cluster structure to reduce the concentration, so that the solubility of metal aluminum is reduced to improve the current efficiency.
In order to achieve the above functions, as shown in fig. 2, the present invention proposes a method for strengthening a molten salt electrolysis process by using power ultrasound, which comprises the following steps: applying ultrasonic waves to an electrolytic cell comprising an electrolyte, wherein the frequency of the ultrasonic waves is 2-50 kHz; the ultrasonic applied power ranges from 0W to 5000W; the ultrasonic output amplitude is between 0 and 200 mu m according to the difference of ultrasonic power. The ultrasound can be continuously applied or intermittently applied, and the application is specific to the actual application situation. The electrolyte is a molten salt electrolyte.
The method comprises the following steps: the structure of the molten salt electrolysis tank 6 is connected, and the control system 1, the ultrasonic generator 2 and the ultrasonic vibration component are connected; when the ultrasonic vibration device is arranged as a plurality of ultrasonic vibration assemblies, the ultrasonic vibration devices can be uniformly distributed in a single row along the length direction of the electrolytic tank 6 and respectively arranged at two sides of the anode; adjusting the working frequency of the ultrasonic generator 2 to 2-50 kHz; the ultrasonic applied power range is adjustable within the range of 0-5000W; according to different ultrasonic power, the output amplitude of the tool head is between 0 and 200 mu m; and (5) completing molten salt electrolysis. In actual operation, the specific working frequency, ultrasonic applied power and tool head output amplitude of the ultrasonic generator 2 can be adjusted according to the on-site implementation condition to obtain the optimal ultrasonic parameters, and preferably, the working frequency of the ultrasonic generator 2 in the aluminum electrolysis process is 20-25 kHz; the ultrasonic applied power range is 1500-1800W; the output amplitude of the tool head is 10-20 mu m. The method is suitable for an aluminum electrolysis process in the range, and under the action of ultrasound, the fused salt ion clusters are depolymerized, so that the size reduction effect is better.
In another aspect, the invention provides a system for strengthening a molten salt electrolysis process by utilizing power ultrasound, as shown in fig. 1, the system comprises a control system 1, an ultrasonic generator 2 and an ultrasonic vibration assembly, wherein the control system 1 is connected with the ultrasonic generator 2, and the ultrasonic generator 2 is connected with the ultrasonic vibration assembly; the ultrasonic vibration assembly can be inserted into the electrolyte in two ways;
the first way is: when the anodes of the electrolytic tank 6 are carbon anodes, the number of the ultrasonic vibration components is one or more times that of the carbon anodes (E), the ultrasonic vibration components are mounted on the electrolytic tank 6 from the side, upper or lower part of the electrolytic tank and contact with the electrolyte, and each carbon anode is ensured to be matched with one or more ultrasonic vibration components, and the specific fixing mode is any existing fixing mode, and a gap exists between the carbon anode and the ultrasonic vibration components. The ultrasonic vibration component acts on the dielectric liquid after the peripheral reaction of the carbon anode.
Specifically, the volume occupied by the default dielectric medium is a rectangular parallelepiped (other structures are applicable), the top view of the default dielectric medium is rectangular, and the ultrasonic vibration module can be mounted as shown in fig. 2-4. As shown in fig. 2, the ultrasonic vibration component is inserted into the carbon anode, and a plurality of holes can be designed on the carbon anode according to the sizes of the carbon anode and the ultrasonic vibration component, and the ultrasonic vibration components with corresponding numbers are inserted into the holes; as shown in fig. 1 and 3, the carbon anodes are uniformly distributed in a single row along the length direction of the electrolytic tank 6 and respectively arranged at two sides of the carbon anodes in the dielectric medium, and one carbon anode corresponds to one ultrasonic vibration component; as shown in fig. 4, the ultrasonic vibration assemblies are arranged between adjacent carbon anodes on the same side along the length direction of the electrolytic tank 6 in a single row and uniformly distributed. Wherein the heights of adjacent ultrasonic vibration assemblies with respect to the bottom of the electrolytic cell may be non-uniform. The present embodiment is merely illustrative of a few simple ultrasonic vibration assembly arrangements, and any stack and variation based on these several arrangements is within the contemplation of the present invention.
The second mode is as follows: when the anode of the electrolytic tank 6 is a metal inert anode (E), the ultrasonic vibration component and the metal inert anode are combined into a whole, so that the strengthening effect can be expected to be further improved, the complexity of the electrolytic tank can be reduced, the investment can be reduced, and the electrolytic efficiency and the economic benefit can be further improved.
The ultrasonic vibration assembly consists of an ultrasonic transducer 3, an amplitude transformer 4 and a tool head 5 which are sequentially connected. The working frequency of the system is 2-50 kHz; the ultrasonic applied power range is adjustable within the range of 0-5000W; the specific choice is made in particular according to the different electrolytes. The output amplitude of the tool head is between 0 and 200 mu m according to the different ultrasonic power.
The specific explanation of each part in the system for strengthening the molten salt electrolysis process by utilizing the power ultrasonic is as follows:
control system 1: the function of the method is to monitor and adjust parameters such as ultrasonic frequency, power and amplitude according to the state of the electrolysis process, so as to realize regional control of ultrasonic emission. The control system 1 is arranged in an electrolysis operation room, has a good man-machine interaction interface and is simple and convenient to operate.
Ultrasonic generator 2: the digital circuit comprises a rectifying circuit, an oscillating circuit, an amplifying circuit, a feedback circuit, a tracking circuit, a protection circuit, a matching circuit and the like. The high-power high-frequency alternating current is generated to drive the ultrasonic transducer to work. And has the following functions: the working state monitoring function can monitor parameters such as ultrasonic frequency, power, amplitude and the like of the working state at all times; an automatic tracking function, after the initial setting is completed, continuous operation can be realized without adjusting the generator; the amplitude adjusting function can automatically adjust the driving characteristic when the load characteristic changes in the working process of the transducer, so as to output stable amplitude; system protection function, when the system is operated in an unsuitable operating environment (such as over-high temperature, over-current, over-voltage, under-voltage, system error, etc.), the ultrasonic generator 2 will stop operating and alarm to display, so as to protect the ultrasonic generator 2 and other system components from damage.
Ultrasonic vibration assembly: for generating ultrasonic vibrations, i.e. converting electrical energy into mechanical energy and transmitting it into a target medium. The ultrasonic vibration assembly consists of an ultrasonic transducer 3, an amplitude transformer 4 and a tool head 5 which are sequentially connected; the number of the ultrasonic vibration components is one or more times of that of the metal inert anodes;
ultrasonic transducer 3: the piezoelectric transducer 3 mainly comprises a piezoelectric ceramic element, a metal cover plate, a prestress screw, an electrode plate, an insulating tube and the like, and has the advantages of high energy conversion efficiency, stable output amplitude, long service life and the like;
horn 4: its function is to change the original ultrasonic amplitude generated by the ultrasonic transducer 3 so that it is suitable for a specific target. In order to reduce acoustic resistance and ensure ultrasonic transmission efficiency, the amplitude transformer 4 is manufactured by adopting high-temperature alloy, and electrolyte corrosion can be effectively avoided; in order to avoid wave leakage and ensure the working efficiency of the ultrasonic transducer 3, the length of the amplitude transformer 4 is adapted to the structure of the electrolytic tank.
Tool head 5: its function is to emit ultrasonic vibrations into the molten salt dielectric. The tool head 5 of the present invention is also made of superalloy and is threadably attached to the horn 4. The tool head can be in cylindrical, square or special-shaped structural forms according to the cathode-anode structure in the electrolytic tank so as to ensure the effective area coverage of an ultrasonic field and the ion cluster regulation and control effect.
Further, according to the different electrolysis target metals, the electrolysis process and the structure of the electrolytic tank 6 are different, the installation mode of the ultrasonic vibration component is different, and the ultrasonic vibration component is matched with the structure of the electrolytic tank 6, and can be installed from the side, the upper part or the lower part, and the aim is to effectively conduct ultrasonic waves into the electrolyte.
Example 1
The embodiment is the application of the pre-baked tank aluminum electrolysis ultrasonic reinforcement, and the specific steps are as follows:
the present example was applied to a 180KA electrolytic cell, which was not connected to the ultrasonic generator 2, and had an electrolytic temperature of 956 ℃, a cell voltage of 4.23V, a current efficiency of 94.15%, and an electricity consumption of 13272 degrees per ton of aluminum. When the ultrasonic generator 2 is connected, the ultrasonic vibration components are distributed on the electrolytic tank, as shown in figures 1 and 3: the ultrasonic vibration components and the carbon anodes are coaxially distributed, uniformly distributed and fixed along a single row in the length direction of the electrolytic tank, respectively arranged on two sides of an anode carbon block, and 22 groups of the ultrasonic vibration components are arranged for 44 total; the ultrasound was continuously applied at a power of 500W, a frequency of 20kHz, and an ultrasound output amplitude of 10 μm.
The application effect is as follows: the electrolysis temperature is 954 ℃, the cell voltage is 4.21V, the current efficiency is reduced by 0.02V and 94.68%, the electricity consumption per ton of aluminum is 13190 degrees, and the electricity consumption per ton of aluminum is reduced by 82 degrees.
Example 2
The present example was applied to a 160KA electrolytic cell, which had an electrolytic temperature of 950 c, a cell voltage of 4.05V, a current efficiency of 94.15% and an electricity consumption of 13198 degrees per ton of aluminum when the ultrasonic generator 2 was not connected. When the ultrasonic generator 2 is connected, the ultrasonic vibration components are distributed on the electrolytic tank, as shown in figures 1 and 4: along the length direction of the electrolytic tank, the electrolytic tank is uniformly distributed in a single row and respectively arranged between adjacent carbon anodes, 25 groups are arranged, and the total number of the electrolytic tank is 50; the ultrasonic application power was 1000W, the frequency of the ultrasonic wave was 25kHz, and the ultrasonic output amplitude was 15 μm, intermittently applied.
The application effect is as follows: the electrolysis temperature is 949 ℃, the cell voltage is 3.92V, the current efficiency is reduced by 0.13V and 94.67%, the electricity consumption per ton of aluminum is 13119 ℃, and the electricity consumption per ton of aluminum is reduced by 79 degrees.
Example 3
The present example was applied to a 200KA electrolytic cell, which had an electrolytic temperature of 950 c, a cell voltage of 3.89V, a current efficiency of 93.96% and a power consumption of 13450 degrees per ton of aluminum when the ultrasonic generator 2 was not connected. When the ultrasonic generator 2 is connected, the ultrasonic vibration components are distributed on the electrolytic tank, as shown in fig. 2: penetrating ultrasonic vibration assemblies from the top of each carbon anode, wherein each carbon anode is provided with 2 ultrasonic vibration assemblies, the total number of the carbon anodes at two sides is 60, and the total number of the carbon anodes is 120; the ultrasound was continuously applied at a power of 1500W, a frequency of 20kHz, and an ultrasound output amplitude of 10 μm.
The application effect is as follows: the electrolysis temperature is 952 ℃, the cell voltage is 3.78V, the current efficiency is reduced by 0.11V and 94.55%, the electricity consumption per ton of aluminum is 13367 ℃, and the electricity consumption per ton of aluminum is reduced by 83 degrees.
According to the embodiment, the device and the method can effectively reduce the power consumption per ton of aluminum.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. A method for strengthening molten salt electrolysis process by utilizing power ultrasound is characterized in that: ultrasonic waves are applied to an electrolytic cell including an electrolyte.
2. The method for strengthening a molten salt electrolysis process by using power ultrasound according to claim 1, wherein: the electrolyte is a molten salt electrolyte.
3. A system for a method of enhancing a molten salt electrolysis process using power ultrasound according to claim 1, wherein: the system comprises a control system (1), an ultrasonic generator (2) and an ultrasonic vibration component, wherein the control system (1) is connected with the ultrasonic generator (2), and the ultrasonic generator (2) is arranged on an electrolytic tank (6) through the ultrasonic vibration component and is contacted with an electric electrolyte;
control system (1): for localized control of ultrasonic emissions;
ultrasonic generator (2): for outputting a stable amplitude;
ultrasonic vibration assembly: for generating ultrasonic vibrations, converting electrical energy into mechanical energy, and transmitting the mechanical energy to the target electrolyte.
4. A system for a method of enhancing a molten salt electrolysis process using power ultrasound according to claim 3, wherein: when the anode of the electrolytic tank (6) is a metal inert anode, the ultrasonic vibration component and the metal inert anode are integrally arranged.
5. A system for a method of enhancing a molten salt electrolysis process using power ultrasound according to claim 3, wherein: when the anode of the electrolytic tank (6) is a carbon anode, the ultrasonic vibration assembly consists of an ultrasonic transducer (3), an amplitude transformer (4) and a tool head (5) which are connected in sequence;
the number of the ultrasonic vibration components is one or more times of the number of the carbon anodes;
the ultrasonic transducer (3): for generating regular ultrasonic vibrations under the excitation of an electric field;
the amplitude transformer (4): for changing the original ultrasonic amplitude generated by the ultrasonic transducer (3) to be suitable for a specific target;
-said tool head (5): for emitting ultrasonic vibrations output by the horn (4) into the molten salt dielectric.
6. The system of the method for enhancing a molten salt electrolysis process using power ultrasound according to claim 5, wherein: the ultrasonic transducer (3) adopts a piezoelectric transduction mode.
7. The system of the method for enhancing a molten salt electrolysis process using power ultrasound according to claim 5, wherein: the amplitude transformer (4) is made of high-temperature alloy.
8. The system of the method for enhancing a molten salt electrolysis process using power ultrasound according to claim 5, wherein:
the tool head (5) is made of high-temperature alloy and is connected with the amplitude transformer (4) through threads;
the tool head (5) comprises any one of a cylindrical structure, a square structure or other special-shaped structures according to the cathode-anode structure in the electrolytic tank (6) and contacts the inside of the dielectric medium.
9. The system of any one of claims 5 to 8 for a method of enhancing a molten salt electrolysis process using power ultrasound, characterized in that: the structure of the ultrasonic vibration assembly is matched with that of the electrolytic tank (6), so that the ultrasonic vibration assembly can be mounted on the electrolytic tank (6) through the side part, the upper part or the lower part of the electrolytic tank (6) and contact with an electrolyte.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311055115.6A CN117248245A (en) | 2023-08-22 | 2023-08-22 | System and method for strengthening molten salt electrolysis process by utilizing power ultrasound |
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