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CN-121990703-A - Electric drive coupling solid-liquid separation device for electrolyte refining

CN121990703ACN 121990703 ACN121990703 ACN 121990703ACN-121990703-A

Abstract

The invention relates to an electric drive coupling solid-liquid separation device for refining electrolyte, which comprises one or more than one combination of an integrated electric drive coupling separation device, a discrete electric drive coupling separation device and a specific technological process or process, is applied to rare earth smelting, seawater electrolysis, chlor-alkali industry and environmental protection, can reduce the total salt solid content from 38% to below 0.5% and the limiting ion to below 0.0028% on the premise of ensuring the production efficiency, and can remove micro-nano particles in suspension liquid at a high speed with extremely low energy consumption and further reduce the operation cost compared with an inclined plate settling tank in the prior art.

Inventors

  • XIAO YANGHUA

Assignees

  • 肖扬华

Dates

Publication Date
20260508
Application Date
20251110

Claims (7)

  1. 1. An electric drive coupling solid-liquid separation device for electrolyte refining is characterized by comprising one or more than one combination of an integrated electric drive coupling separation device, a discrete electric drive coupling separation device and a specific technological process or procedure; Wherein the electrically driven coupling further comprises At least one of a positive electrode mechanism and a negative electrode mechanism capable of loading constant voltage or oscillating voltage and a kinetic energy fluctuation mechanism is coupled with at least one of a substance separation device and a chemical reaction device, so that at least one function of migration, diffusion, volatilization and chemical reaction of substances generates a synergistic effect; the electrode mechanism further comprises one or more than one combination of an electrically driven coupling sedimentation inclined plate, an electrically driven coupling catalytic polar plate and a permeable electrically driven coupling catalytic polar plate; The kinetic energy fluctuation mechanism further comprises one or more than one combination of an ultrasonic multi-frequency transducer and a mechanical vibrator; the separation device further comprises a solid-liquid separation device or a solid-liquid separation interface, a gas-liquid separation device or a gas-liquid separation interface, a gas-solid separation device or a gas-solid separation interface, a filter or a combination of more than one of the interfaces; The chemical reaction device further comprises one or more than one combination of a mixed double decomposition device, a crystallization device and/or a dissolution device, a tank type reaction device, a tubular reaction device and a tower type reaction device; Wherein, the integrated electric drive coupling and separating device also comprises The device comprises a coaxial differential power mechanism, an outer transmission shaft, a kinetic energy fluctuation mechanism or an ultrasonic multi-frequency transducer, a mixing reaction barrel (inner barrel), a sedimentation and clarification barrel (outer barrel), an inner transmission mud rake, a heat exchanger, a stirring paddle, a filter and an electric drive coupling sedimentation inclined plate; The coaxial differential power mechanism is fixed at the top of the central axis or a nearby area of the inner barrel, the inner barrel is positioned at the upper half part of the outer barrel, the axes of the inner barrel and the outer barrel are overlapped or eccentric, the inner transmission mud rake extends to the bottom of the outer barrel, the rotating shaft is connected with the coaxial differential power mechanism, the outer transmission shaft is positioned at the central area of the inner barrel and is fixedly connected with the stirring paddles, the heat exchanger is positioned at the space area between the bottom end of the horn diffusion opening and the upper part of the inner transmission mud rake and is arranged around the inner shaft of the coaxial differential power mechanism, the filter is positioned at the shoulder part of the outer barrel 9 and is fixedly connected with the overflow groove cofferdam, and at least one group of kinetic energy fluctuation mechanisms or preferably ultrasonic multi-frequency transducers are arranged around the upper plane or the lower plane of the filter at the radial half to two thirds of the outer barrel; The electric drive coupling sedimentation inclined plates are arranged below the filter or in the peripheral divergence direction of the upstream and inner barrel of the filter, and the cathodes and the anodes of adjacent conductive layers are alternately arranged in any one of a parallel layer, a similar mosquito coil cylinder type, a multi-layer scale type, a concentric circle type and a reverse shape or a combination mode of the parallel layers, wherein the included angle between the electric drive coupling sedimentation inclined plates and the horizontal plane is 45-90 degrees, and the distance between the electric drive coupling sedimentation inclined plates is maximally kept between one fiftieth to one half of the shorter length of the two adjacent electric drive coupling sedimentation inclined plates; Wherein, the discrete electric drive coupling and separating device also comprises The topological structure requirement of the integrated electrically driven coupling and separating device is changed into two and/or more independent unit structures or unit isolated device systems or unit combined device systems.
  2. 2. The electric drive coupling solid-liquid separation device according to claim 1 is characterized in that the specific process flow or process comprises that high-salt wastewater passes through a high-salt wastewater inlet pipe and a precipitator composition passes through a precipitator feeding station, and the high-salt wastewater and the precipitator composition synchronously or sequentially or continuously enter a mixing reaction zone of a mixing reaction barrel (inner barrel); in the above chemical reaction formulae (1) to (4), M n+ -a metal ion of soluble salt having a valence n≥2, such as Ca 2+ 、Mg 2+ , the type and content of the particular metal ion being dependent on the source, process and composition of the feedstock in the field plant; A m- -acid radical of soluble salts having a valence of m≤2, e.g. The type and content of the specific acid radical are selectively added according to the mineral source, process and ingredient of raw materials of the field factory; cl - -chloride (for example); OH - -hydroxide (for example); h + -hydrogen ions (for example); -ammonium ions (for example); Potassium or sodium ions (for example); m-valence or coordination coefficient; n-valence or coordination number.
  3. 3. The electrically driven coupled solid-liquid separator according to claim 1, wherein said assembly comprises two or more processes, mechanisms, devices, systems with independent functions, and wherein said processes, mechanisms, devices, systems are combined or arranged in a stacked manner or connected by means of pipes and/or valves and/or electromechanical control mechanisms.
  4. 4. The electrically driven coupling device system of claim 1, wherein the electrically driven coupling sedimentation swash plate comprises at least one of a single electrode sedimentation swash plate and a composite electrode sedimentation swash plate or a combination of two of the single electrode sedimentation swash plate and the composite electrode sedimentation swash plate; Wherein the single electrode sedimentation sloping plate further comprises The cathode conductive plate and the anode conductive plate of each single electrode sedimentation inclined plate are respectively connected with a constant voltage or oscillation waveform electric drive cathode power supply and an electric drive anode power supply; wherein, the composite electrode sedimentation sloping plate further comprises Solid electrically-driven coupled sedimentation inclined plates, permeable or breathable electrically-driven coupled sedimentation inclined plates (the sandwich layer is hollow or provided with a pipeline, At least one or more than one combination connectable with backwash water or compressed air); Respectively manufacturing a negative electrode conductive layer and a positive electrode conductive layer on the upper surface and the lower surface of the same integral plate, wherein an insulating layer is arranged between the negative electrode and the positive electrode to form a three-layer fixing structure of the sandwich biscuit; wherein the negative electrode conductive layer and the positive electrode conductive layer further comprise One or more than one combination of carbon fiber cloth, carbon fiber net, carbon fiber non-woven fabric, conductive coating, metal foil layer, metal plate or plating metal plate, metal net or plating metal net; wherein the insulating layer 21.4 further comprises One or more than one combination of rubber, plastic, glass fiber reinforced plastic, PCB, glass fiber reinforced plastic, ceramic, radiation crosslinked plastic plate, air or liquid; The metal further comprises any one or a combination of aluminum, iron, copper, nickel, titanium and silver; The plating further comprises plating an inert metal such as any one or combination of copper, nickel, titanium, silver, gold, rhodium, ruthenium, rhodium, palladium, platinum on the outer surface of the metal; the carbon fiber mesh further comprises a pore diameter within a range of 30-2000 meshes; The carbon fiber non-woven fabric further comprises an equivalent pore diameter within a range of 30-2000 meshes.
  5. 5. The electrically driven coupling device system of claim 1, wherein the ultrasonic multi-frequency transducer comprises one or more than one combination of an integrated ultrasonic multi-frequency transducer and a discrete ultrasonic multi-frequency transducer, and the center frequency is distributed in four frequency bands of (20-51) Hz, (100-600) Hz, (10-31) kHz and (1-3.5) MHz, at least two frequency bands are selected and at least one center frequency is executed alternately; Wherein the integrated ultrasonic multi-frequency transducer further comprises Overlapping or combining or integrating the appearance structure into a whole assembly; Wherein the discrete ultrasonic multi-frequency transducer further comprises Discrete components or assemblies are employed in the form and structure to cooperate.
  6. 6. The electrically driven coupling device system of claim 1, wherein the filter comprises one or more than one combination of a barrel filter cartridge, a tube filter cartridge, a bag filter cartridge, a planar filter cartridge, a corrugated filter cartridge; the filter core and the filter screen are one or more than one combination of PP fiber cloth, PE fiber cloth, PTFE fiber cloth, PVDF fiber cloth, glass fiber cloth, foam ceramic, foam metal, wire mesh and radiation cross-linked rubber-plastic fiber net.
  7. 7. The electric drive coupling solid-liquid separation device according to claim 2 is characterized in that the precipitator composition comprises any one or more than one type of acid substances, alkali substances and salt substances or a mixture, and the proportion of the total addition amount of the precipitator composition to the total solid content of the salt in the sewage is dynamically adjusted and controlled to be (0.03-1.73) times and the pH value to be 1.5-12 according to fluctuation and difference of salt content, pH and temperature of the sewage in the process field of electric drive coupling I section treatment, electric drive coupling II section treatment and electric drive coupling III section treatment; Wherein the acid substance also comprises Chlorine or chlorine water, hydrochloric acid, sulfuric acid, phosphoric acid, pyrophosphoric acid, polyphosphoric acid, oxalic acid, citric acid, carbon dioxide gas or carbonic acid, polyacrylic acid, or a combination of more than one of C 2 ～C 18 carboxylic acid, and a dilution thereof; wherein the alkali substance further comprises Ammonia gas or one or more than one combination of ammonia water, sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, polyacrylamide, urea, biuret and a diluent thereof; Wherein the salt substance also comprises One or more of aluminum chloride, polyaluminum chloride, aluminum sulfate, ammonium sulfate, sodium sulfate, ammonium phosphate, ammonium polyphosphate, sodium phosphate, sodium metaphosphate, ammonium oxalate, sodium oxalate, ammonium citrate, sodium citrate, ammonium carbonate, sodium carbonate, ammonium bicarbonate, sodium bicarbonate, ammonium C 2 ～C 18 carboxylate and/or sodium salt, and a diluent thereof. Wherein the single electrode sedimentation sloping plate further comprises A single negative electrode conductive plate or a single positive electrode conductive plate is arranged on one plate, and the negative electrode conductive plate and the positive electrode conductive plate can be relatively displaced and/or fixed; wherein, the composite electrode sedimentation sloping plate further comprises The upper and lower surfaces of the same integral plate are respectively attached with a negative electrode conductive layer and a positive electrode conductive layer, and an insulating layer is arranged between the negative electrode and the positive electrode to form a three-layer fixing structure of the sandwich biscuit.

Description

Electric drive coupling solid-liquid separation device for electrolyte refining Technical Field The invention spans the fields of rare earth smelting, seawater electrolysis, chlor-alkali industry and environmental protection, and particularly relates to purification and refining before high-salt water electrolysis, in particular to an electric drive coupling solid-liquid separation device. Background Intensive research shows that in order to electrolyze high-salt wastewater, seawater and brine with high efficiency and low cost, the electrolyte must be purified-to remove restriction ions, organic matters and other impurities-before electrolysis, no matter whether in rare earth smelting, seawater electrolysis or chlor-alkali industry. This is a costly process and technical problem, and there is room for further improvement in the prior art. Taking the rare earth industry dilemma as an example, whether in land mining or deep sea mining, its environmental cost is considered to be the essential logic of world rare earth gaming. The sewage of rare earth industry contains inorganic salt with concentration of more than 30% and complex organic compounds, and specifically comprises at least any two of sulfate groups, chloride ions, sodium ions, ammonium ions, silicate groups, calcium ions and magnesium ions with an ultra-large amount, organic substances of alkyl phosphoric acid, phosphate, alkyl carboxylic acid and hydrocarbon with a normal level, and heavy metal ions with a trace level. If these components are directly discharged without treatment, not only resources are wasted, but also the environment of the sea and river area is seriously polluted, the ecology is destroyed, and the observable and long-term irreversible damage is caused to human beings, animals and plants. The embedded electrolytic processing technique was identified as the most effective and least costly process route. With the maturation and industrialization of wind power, photovoltaic power and tidal power generation technologies, the method provides low-cost energy for wastewater treatment of deep sea exploitation of rare earth and production of chlor-alkali by electrolysis of seawater. However, a large amount of impurity ions such as magnesium, calcium, sulfate radical and the like in the seawater can poison an expensive ion membrane in the electrolytic tank, greatly reduce the production efficiency and shorten the overall service life of the electrolytic tank. Therefore, the method solves the difficult problem of purifying the electrolyte before electrolysis with high efficiency and low cost, and is the direction of the project of producing sodium hydroxide 'green chlor-alkali' by using new energy to electrolyze seawater. Although the prior art of electrolyte purification prior to electrolysis is well established in the modern chlor-alkali industry. However, the prior art is an inclined plate sedimentation tank, and the biggest defect is that the sedimentation efficiency is too low, and the service life of an ion membrane of an electrolytic tank cannot be effectively prolonged because suspended particles with micrometer and nanometer dimensions cannot be efficiently separated, so that the aims of energy conservation and emission reduction are achieved. Therefore, it is necessary to provide an electrolyte refining and separating device with high sedimentation efficiency, high purification accuracy and low cost. Disclosure of Invention The invention aims to provide an electrolyte refining and separating device with high sedimentation efficiency, higher purification precision and low cost. The invention provides an electric drive coupling solid-liquid separation device for refining electrolyte, which comprises one or more than one combination of an integrated electric drive coupling separation device, a discrete electric drive coupling separation device and a specific technological process or procedure, wherein the electric drive coupling further comprises At least one of a positive electrode mechanism and a negative electrode mechanism capable of loading constant voltage or oscillating voltage and a kinetic energy fluctuation mechanism is coupled with at least one of a substance separation device and a chemical reaction device, so that at least one function of migration, diffusion, volatilization and chemical reaction of substances generates a synergistic effect; the electrode mechanism further comprises one or more than one combination of an electrically driven coupling sedimentation inclined plate, an electrically driven coupling catalytic polar plate and a permeable electrically driven coupling catalytic polar plate; The kinetic energy fluctuation mechanism further comprises one or more than one combination of an ultrasonic multi-frequency transducer and a mechanical vibrator; the separation device further comprises a solid-liquid separation device or a solid-liquid separation interface, a gas-liquid separation device or a gas-liquid separ