22 results about "Liquid cathode" patented technology

A method and system for precipitating a solid using molten oxide electrolysis are presented. Using an electrical current for electrolysis in a first vessel, an oxide material is heated to form a liquid cathode. The first vessel also includes a corresponding anode. A portion of the liquid cathode is received into a second vessel that is separated from the first vessel by a conduit. The portion of the liquid cathode is allowed to cool. Precipitate of the cooled liquid cathode may then be collected in the second vessel. The precipitate may be a metal or metalloid, such as silicon. The method and system allow for continuous processing for production of a precipitate material, in contrast to batch processing of other methods or systems. For example, precipitate may be harvested from the second vessel while electrolysis is continuously performed in the first vessel.

According to the flow channel sealing bipolar plate for the alkaline electrolytic cell disclosed by the invention, the multi-channel hydrogen-alkali and oxygen-alkali gas channel holes, the hydrogen-alkali and oxygen-alkali gas channel grooves, the alkali liquor cathodes, the anode liquid inlet holes, the alkali liquor cathodes and the anode liquid inlet grooves which are mutually staggered are arranged, so that a plurality of alkali liquor circulation and distribution channels which are distributed in a staggered manner can be provided for each small electrolytic chamber; the electrolysis cells are rapidly filled with alkali liquor, the uniformity and consistency of the concentration of the alkali liquor at all positions are ensured, gas-liquid two-phase flow fields in the electrolysis cells are distributed more uniformly, rising bubbles can be rapidly discharged at the nearest outlet at the fastest speed, gas gathering is reduced, gas dead zones in the electrolysis cells are eliminated, alkali liquor resistance voltage drop is reduced, and the service life of the electrolysis cells is prolonged. Therefore, the electrolysis energy consumption of the alkaline electrolytic bath is reduced, and the electrolysis efficiency is improved; meanwhile, by arranging corresponding flow channel sealing structures, mutual mixing of hydrogen and oxygen in the small electrolysis chambers is avoided, so that the purity of hydrogen and oxygen in the alkaline electrolytic cell is improved, and high safety, long service life and stable operation of the alkaline electrolytic cell are guaranteed.

An X-ray generation apparatus includes: an X-ray generation tube including an insulating tube with a first opening end and a second opening end, a cathode arranged to close the first opening end of the insulating tube and including an electron emitting portion, and an anode arranged to close the second opening end and including a target that generates X-rays when electrons from the electron emitting portion collide; and an accommodating container configured to accommodate the X-ray generation tube, wherein the accommodating container has a third opening end, and the X-ray generation tube is arranged to close the third opening end, the accommodating container is filled with an insulating liquid, an outer surface of the cathode includes a cylindrical side surface and a circular bottom surface, and at least the entire side surface of the outer surface is surrounded by a member.

The invention discloses a method suitable for on-site analysis of the valence state of thallium in water. The method comprises the following operation steps: step 1, collecting and separating a water sample; step 2, acidizing treatment; 3, Tl (I) and Tl (III) are separated; 4, total thallium is measured; step 5, Tl (I) determination; the invention relates to the technical field of atomic spectrum metal element analysis, and the method has the beneficial effects that by combining an electrochemical separation technology with a Chelex-100 solid-phase extraction column and cooperating with a portable liquid cathode glow discharge thallium measurement instrument, high-sensitivity field detection of Tl (I) and Tl (III) is realized, the detection limit is lower than 1.0 g / L, and the repeatability is RSDlt; the analysis period of a single sample is less than or equal to 30 minutes, the weight of equipment is only 5kg, battery power supply is supported, and acidification-separation-detection integrated operation can be completed outdoors without professional laboratory conditions.

The invention belongs to the technical field of rare earth metal electrolytic metallurgy, and particularly relates to a LaF3-LiF molten salt system for preparing rare earth alloy through electrolysis and application of the LaF3-LiF molten salt system. Na3AlF6 is added into the LaF3-LiF molten salt system, and in the molten salt system, the mass percent of Na3AlF6 is 25%-45%, the mass percent of LaF3 is 20%-35%, and the balance is LiF. The method has the advantages that the solubility of rare earth oxide of the low-fluoride rare earth electrolysis system is increased, the melting point of the low-fluoride rare earth electrolysis system is reduced, the physical property of the low-fluoride rare earth electrolysis system is well improved, an optimized system is provided for rare earth liquid cathode electrolysis, the electrolysis temperature is low, and the current efficiency is high.

A hybrid cathode includes a tray, the tray includes a chassis part located in the middle and an edge part connected to the convex edge of the chassis part, a solid cathode is built in the chassis part, and there is a part of the solid cathode exposed outside the chassis part; a liquid cathode is carried in the tray, and the solid cathode and the liquid cathode constitute a hybrid cathode. Also involved is an electrolytic furnace applying the hybrid cathode, the hybrid cathode is connected to the negative electrode of a power supply device, and further includes: a furnace body; a bracket provided at the bottom of the furnace body, and the hybrid cathode is arranged on this bracket; an anode, the top is connected to a lifting device, and the bottom is directly opposite to the hybrid cathode, the hybrid cathode is connected to the negative electrode of the power supply device, and the anode is connected to the positive electrode of the power supply device; a receiver is arranged below the hybrid cathode for receiving the molten metal overflowing from the hybrid cathode. For the electrolytic furnace adopting the hybrid cathode of the present invention, the consumption of the anode during the electrolysis process is compensated by the structural feature of increasing radius, and the stability of the electrode distance is maintained.

The invention relates to an electrolysis facility comprising a main circuit in which a water-electrolyte mixture (MLH2, MLO2) passes through a gas-liquid cathode separator (10cat) and a gas-liquid anode separator (10an), the electrolysis facility comprising a balancing device (100) which is connected to the gas-liquid cathode separator (10cat) and to the gas-liquid anode separator (10an), characterised in that the balancing device (100), which makes it possible to compensate for pressure variations, comprises: a chamber (102), forming an expansion tank, the interior volume of which is divided by at least one elastically deformable partition (108) into an anode portion (Van) and a cathode portion (Vcat); a cathode pipe (104cat) for connecting the cathode portion (Vcat) to the upper portion of the gas-liquid cathode separator (10cat); and an anode pipe (104an) for connecting the anode portion (Van) to the upper portion of the gas-liquid anode separator (10an).

This invention relates to a hydride generation gaseous sample introduction method and apparatus for heavy metal element determination in conjunction with a liquid cathode glow discharge-atomic emission spectrometer, belonging to the field of atomic spectroscopy metal element analysis technology. This invention uses chemically generated carbon dioxide gas as a carrier gas, which is then used as the atmosphere gas in the liquid cathode glow discharge to ionize and generate micro-plasma. The chemical hydride generation method converts the applicable analyte element into a hydride, which is then carried into the micro-plasma by the carbon dioxide carrier gas, atomized, and excited to generate an emission spectrum.

The utility model relates to a carbon dioxide electro-catalytic reactor, which comprises an anode chamber, a cathode chamber and an anode chamber, a mixed gas containing carbon dioxide and water is introduced into the cathode chamber; the anode chamber and the cathode chamber are separated by the functional layer, the functional layer comprises a cathode catalyst layer located on one side of the cathode chamber and an anode catalyst layer located on one side of the anode chamber, and the functional layer is further provided with an anion exchange layer located between the anode catalyst layer and the cathode catalyst layer. According to the carbon dioxide electro-catalytic reactor, the mass transfer resistance of the functional layer is reduced by improving the functional layer, so that the reaction rate and the reaction efficiency of the reactor can be improved, and the conversion rate of a reaction system is improved. Specifically, a functional layer of a multi-layer membrane in the prior art is simplified into a single ion exchange membrane, and a two-cavity structure is formed, so that the structure of the functional layer is simplified, and the purpose of reducing the mass transfer resistance of the functional layer is achieved.

The invention discloses a method for recovering lithium from rare earth electrolysis molten salt slag, and belongs to the technical field of waste slag resource utilization and non-ferrous metallurgy. The method comprises the following steps: heating and melting the molten salt slag, electrolyzing by taking graphite as an anode and bismuth or lead liquid metal as a cathode, and reducing and dissolving lithium ions in the cathode to form an alloy by controlling electrolysis voltage selectivity; and carrying out high-vacuum distillation on the obtained lithium-rich alloy to evaporate, condense and recover lithium to obtain high-purity metal lithium, and returning a lithium-poor liquid cathode for recycling. According to the method, efficient separation of lithium, sodium and potassium is achieved through precise voltage control and the liquid cathode alloying effect, no waste water is generated in the whole process, the lithium recovery rate is high (larger than 90%), the product purity is high (larger than 99.9%), and the method is a novel green and efficient lithium recovery process.

The invention discloses a liquid cathode glow discharge ignition method for performing glow starting by utilizing the liquid level height of a measured sample. The method comprises the following working steps: applying a glow starting voltage, extracting and beating out the sample, increasing the height of a liquid water column, monitoring a glow starting current and maintaining stable glow. The invention relates to the technical field of atomic spectrum analysis, and has the beneficial effects that the pressure intensity and humidity of an experimental environment are precisely regulated and controlled through a precise regulator, so that the stability of glow discharge is guaranteed; the injection pump accurately controls the water sample flow and the conveying speed to ensure that the water sample is stably sprayed into the well-designed capillary tube to form a stable electric field; the propelling speed of the injection pump is increased at a constant speed, the height of a liquid water column is gradually increased, and when the distance between the anode rod and the water column is reduced to be smaller than the starting distance, ignition starting is smoothly completed.

This invention relates to a method for preparing titanium alloys by molten salt electrolysis of titanium oxide using a liquid metal cathode, belonging to the field of molten salt electrolysis technology. The invention employs a liquid metal cathode molten salt electrolysis apparatus. The liquid cathode metal is placed in a cavity at the center of an insulating base. A mixture of TiO2 and fluorine-chloride molten salt is added to the electrolytic cell. A graphite anode is inserted at the top of the fluorine-chloride molten salt mixture in the electrolytic cell. An inert gas is introduced, and the temperature is raised to 700-850°C. The metal in the cavity at the center of the insulating base melts to form a liquid metal alloy cathode, and the fluorine-chloride molten salt melts to form a molten salt melt. The molten salt is electrolyzed at a constant voltage under an inert atmosphere. After electrolysis, the mixture is held at this temperature for 1-5 hours under an inert atmosphere, then cooled to room temperature. The molten salt and cathode are separated to obtain the titanium alloy. The liquid cathode of this invention has a depolarizing effect on TiO2 reduction, which can enhance the electrolysis and in-situ alloying of TiO2, reduce energy consumption, achieve clean production, and improve economic and environmental benefits.

Rechargeable metal halide batteries with optimized active catholyte solutions have high energy density and do not require charging after manufacture. The optimized active catholyte solutions comprise (i) a mixture of metal halides and their corresponding halogens dissolved in an organic solvent at a concentration ratio greater than 0.5 and (ii) an oxidizing gas. The organic solvent is a nitrile-based compound and / or a heterocyclic compound. Ethylene glycol dimethyl ether can be added to the organic solvent to improve battery performance.

A method for capturing carbon dioxide (CO2) includes alternating flow of a gas and a liquid catholyte through a copper-coated channel of a cathode plate, flowing a liquid anolyte through a channel of an anode plate that interfaces with the cathode plate via an anode and an ion exchange membrane, and applying a voltage across the anode and cathode plate. Dilute CO2 feedstocks, such as air, are suitable for use. A method of making an electrochemical reactor includes adhering a lower surface of a cathode plate to an upper surface of an at least one gasket, adhering a lower surface of at least one gasket to an upper surface of a windowless gasket with copper, adhering a lower surface of the windowless gasket to a support, flowing a copper ions though the cathode plate, and applying a voltage across the cathode plate and copper.

The utility model belongs to the technical field of atomic spectrum metal element analysis, and particularly relates to a liquid cathode glow discharge spectrometer with an optical filter automatic switching function, which comprises a solid anode, a liquid cathode, an optical filter assembly, a circular convex lens and an optical fiber spectrometer, a glow discharge area is arranged between the solid anode and the liquid cathode, the optical fiber spectrometer is arranged outside the glow discharge area, and the circular convex lens is arranged between the glow discharge area and the optical fiber spectrometer; the optical filter assembly is arranged between the glow discharge area and the circular convex lens and comprises a rotating disc and a plurality of through holes distributed in the circumference of the rotating disc, and at least one through hole is provided with an optical filter. According to the liquid cathode glow discharge spectrometer, different optical filters can be switched and selected according to different measured wavelengths of to-be-measured elements and interference conditions of adjacent spectral lines (bands), so that the working efficiency is improved, the consumption of a test solution of a test sample is reduced, the measurement precision is improved, and the labor time is saved.

The invention relates to a fused salt electrolysis and liquid cathode recovery integrated device and method for extracting actinide elements in metal spent fuel, the device comprises a fused salt electrolysis module and a liquid cathode treatment module, the fused salt electrolysis module adopts a double-cathode system, uranium metal is firstly deposited and recovered on a solid cathode, and the liquid cathode treatment module adopts a liquid cathode treatment system; then depositing and recovering plutonium and super-uranium element metals in the liquid cathode; the liquid cathode treatment module comprises a heating volatilization unit and a condensation recovery unit, and a drainage discharge unit is arranged between the heating volatilization unit and the cathode reaction area; a first pipeline is connected between the heating volatilization unit and the condensation recovery unit, and a second pipeline is connected between the condensation recovery unit and the liner container. According to the invention, under the condition that the furnace is prevented from being opened to transfer the liquid cathode, the conveying of the liquid cathode, the separation of the actinide elements and the cyclic reuse of the actinide elements can be realized in the same device by utilizing the gravity of the liquid cathode and the volatility difference between the liquid cathode and the actinide elements such as U, Pu and the like.

The invention provides a titanium ore electrolysis-tungsten extraction titanium-silicon efficient separation method based on a liquid metal cathode, and relates to the technical field of thermometallurgy. The method comprises the steps that metal which is in a liquid state at the working temperature is laid at the bottom of an electrolytic furnace to serve as a cathode matrix, and metal tungsten is prepared to serve as an extraction agent; ore containing titanium dioxide is added into the furnace to serve as electrolyte, and an inert electrode material or graphite is adopted as an anode. Raising the temperature to a target temperature under the protection of inert atmosphere, keeping the temperature to fully pre-melt the electrolyte, lowering the electrode, and applying a certain current for electrolysis. And titanium and silicon elements deposited in the liquid cathode are separated by utilizing the extraction effect of metal tungsten on silicon in a molten state, and electrolysis products are tungsten-silicon alloy and titanium-cathode matrix alloy. The method has the advantages of being wide in raw material adaptation range, high in current efficiency, flexible in cathode metal selection, green and low-carbon in process, controllable in whole process and the like, and a new technical path is provided for recycling metallurgical resources and preparing binary alloy through an electrolytic method.

This invention relates to the field of plasma spectral detection technology, specifically providing an adaptive control method for the spectral detection of liquid cathode glow discharge. The method includes: real-time acquisition of multimodal state data of the discharge process, inputting this data into a pre-trained stability evaluation model, and outputting a stability score that quantitatively characterizes the discharge state. The score is compared with preset first threshold, second threshold, and fault threshold: if the score is ≥ the second threshold, a stable state is determined and spectral acquisition and analysis are triggered; if the score is between the first and second thresholds, a critically stable state is determined and monitoring continues; if the score is between the fault threshold and the first threshold, an unstable state is determined and at least two discharge parameters are coordinated and adjusted until stability is restored; if the score is ≤ the fault threshold, a fault state is determined and a maintenance alarm is triggered. This invention significantly improves the detection stability and automation level under complex operating conditions.

The invention discloses a liquid cathode glow discharge spectrum device and method for analyzing trace thallium. The device comprises a pretreatment unit, a separation and enrichment unit and a detection unit. The pretreatment unit is used for mixing a to-be-treated water sample with an oxidant and an acid solution to form a pretreated water sample; an enrichment column of the separation and enrichment unit comprises chelating resin, after the pretreated water sample enters the enrichment column, leacheate and an eluent are sequentially supplied to the enrichment column, and a water sample to be analyzed is obtained; and the detection unit receives the to-be-analyzed water sample for analysis and detection. According to the invention, high-selectivity chelate resin is used as an enrichment column filler, thallium ions in a pretreated water sample can be efficiently adsorbed, and other interfering ions can be separated; and after enrichment is completed, leacheate is supplied to the enrichment column, the pH environment of the enrichment column can be adjusted while interference ions are leached, and the thallium ions are effectively eluted under the assistance of a proper eluent, so that the interference problem of coexisting ions under a high-salt matrix is solved, the accuracy and sensitivity of analysis and detection are improved, and the device has the characteristics of miniaturization, low power consumption and high sensitivity.

To provide an electric field filtration device and a method for manufacturing a filter material for the electric field filtration device, which improves separation efficiency, functions adequately in low-voltage regions, and achieves high functionality.SOLUTION: A device includes a supply chamber 12 for supplying a supply liquid 11 containing positively charged components, a cathode filter plate electrode 14 equipped with a filter material 13 having pores 13a for separating the positively charged components, positioned on both sides of the supply chamber 12, a flat anode electrode 15, and a filtrate chamber 17 into which the filtrate separated from the positively charged components flows. The filter material is made of a high-dielectric-constant material.SELECTED DRAWING: Figure 1

The present application relates to a method of reconditioning a flow cell The flow cell comprises a gas anode chamber having a flow cell gas anode with a flow cell gas anode active surface, a liquid cathode chamber having a flow cell liquid cathode, and a flow cell membrane between the gas anode chamber and liquid cathode chamber. The method comprises delivering a flow cell reconditioning liquid into the gas anode chamber.

Disclosed herein is a redox flow battery comprising: a catholyte portion comprising a liquid catholyte, a catholyte tank, and a cathode chamber; and an anolyte portion comprising a liquid anolyte, an anolyte tank, and an anode chamber, wherein: at least one of the catholyte tank and the anolyte tank further comprises a solid electroactive material selected from the group consisting of Prussian Blue, Prussian Blue analogs, and hydrates thereof.