11 results about "Liquid cathode" patented technology

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.

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.

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.