289 results about "Titanium tetrachloride" patented technology

The invention provides a titanium tetrachloride boiling chlorination process optimization method based on a causal model and electronic equipment, and the method comprises the steps: constructing a generation mechanism between structural equation model expression variables based on the causal relationship between boiling chlorination key process parameters and result variables; the effect of external intervention on the TiCl4 yield and unit cost is simulated through causal inference, and a multi-target optimization model with the minimization of the unit product manufacturing cost and the maximization of the TiCl4 yield as targets is constructed in combination with the structural model and Monte Carlo sampling estimation expectation; and iteratively solving the optimization model by adopting a causal-based non-dominated sorting genetic algorithm, and obtaining a Pareto optimal solution set meeting variable constraint conditions through operations such as causal variable classification, dynamic penalty weighting, non-dominated sorting and sensitive driving disturbance. According to the method, a causal modeling and optimization integrated framework suitable for the boiling chlorination process is constructed, personalized process strategy generation and production operation decision making are supported, and the raw material utilization rate and the process operation economy are improved.

The invention discloses a preparation method of high-purity titanium dioxide, which is characterized by comprising the following steps: (1) preparing a titanium solution: slowly adding a titanium tetrachloride solution into deionized water to obtain the titanium solution; (2) heat-preservation hydrolysis: adding an acidic dispersant into the titanium liquid obtained in the step (1), stirring and mixing uniformly at room temperature, heating to 80-85 DEG C, preserving heat, and carrying out hydrolysis reaction for 1-2 hours to obtain hydrolysis slurry; (3) obtaining a precursor: cooling, aging, filtering, washing and drying the hydrolyzed slurry obtained in the step (2) to obtain a metatitanic acid precursor; and (4) calcining: calcining the metatitanic acid precursor obtained in the step (3) at 400 DEG C to obtain the high-purity titanium dioxide. According to the preparation method of the high-purity titanium dioxide, provided by the invention, the high-purity (greater than or equal to 99.9%) titanium dioxide is prepared under mild process conditions of low-temperature hydrolysis and low-temperature calcination, the product yield reaches about 90%, and the obtained high-purity titanium dioxide is spherical titanium dioxide with a rutile structure and has good dispersity.

According to the alkoxy magnesium carrier Ziegler-Natta catalyst and the preparation method thereof, alkoxy magnesium is activated and then loaded with titanium, fluorene diether is selected as an internal electron donor, the obtained catalyst is subjected to post-treatment, and finally the alkoxy magnesium carrier Ziegler-Natta catalyst with excellent performance is prepared. The raw material utilization rate is higher, the adding amount of required titanium tetrachloride is smaller, the steps are simpler, the preparation conditions are mild, the isotactic index of the prepared homo-polypropylene is higher, and the activity of the prepared catalyst is higher.

The invention relates to the technical field of metallurgy, and provides a method and system for preparing a spongy TC4 alloy raw material, and the method comprises the following steps: heating and mechanically stirring titanium tetrachloride, aluminum trichloride and vanadium tetrachloride according to a component proportion required for preparing a TC4 alloy to form a uniform chloride mixture; the chloride mixture is subjected to a reduction distillation reaction in the presence of magnesium, and inert gas is continuously introduced in the reaction process for stirring; and after the reaction is completed, separating the byproduct magnesium chloride to obtain the spongy TC4 alloy raw material. According to the scheme, use of high-cost metal raw materials is avoided from the source, meanwhile, the complex steps of electrode preparation and repeated smelting are omitted through the one-step reduction distillation reaction, and energy consumption and time cost are greatly reduced.

The invention provides a production method of high-purity sponge titanium. The production method comprises the following steps: firstly, obtaining refined magnesium and refined titanium tetrachloride after secondary refining; then feeding the refined magnesium and the refined titanium tetrachloride into a reactor subjected to titanizing treatment, and carrying out reduction and vacuum distillation in a protective atmosphere by adopting a reduction distillation method to obtain a sponge titanium lump; and finally, the sponge titanium lumps are subjected to surface impurity material stripping, then temperature-controlled crushing and screening are conducted, four-stage sorting including color sorting, magnetic sorting, winnowing and manual sorting is conducted, and the high-purity sponge titanium is obtained. According to the method, the refined titanium tetrachloride is used for purifying the crude magnesium, so that the high-purity production raw material is obtained; in the magnesiothermic reduction vacuum distillation process of titanium tetrachloride, a blocking method of impurities of Fe, Cr and Ni is adopted, and a pure sponge titanium lump is obtained; and identifying and separating high-iron, high-chlorine, high-oxygen and high-nitrogen impurity materials in the sponge titanium by adopting sorting methods such as color sorting, winnowing, screening, magnetic separation and the like to finally obtain the high-purity sponge titanium.

The invention discloses a method for preparing an impurity content test solution in titanium tetrachloride by a sulfuric acid method and a detection method, and belongs to the technical field of component detection and analysis. The preparation method and the detection method comprise the following steps: adding water into a titanium tetrachloride sample to react until a precipitate is dissolved and no thick white smoke is generated; heating and evaporating the obtained product to dryness under the condition that the temperature is not higher than 100 DEG C; then adding a sulfuric acid solution and a proper amount of water, heating under the condition that the temperature is not higher than 200 DEG C until the titanium matrix is completely dissolved to obtain a clear and transparent solution, and adding water to dilute and fix the volume to obtain a titanium tetrachloride impurity content test solution with the sulfuric acid concentration being less than 2%; and determining the impurity content in the solution by adopting ICP-MS or ICP-OES. The method disclosed by the invention is simple to operate, effectively avoids the pollution risk of external elements, and reduces the operation error, thereby greatly improving the accuracy and reliability of an analysis result.

Methods and apparatus for selectively depositing a titanium material layer atop a substrate having a silicon surface and a dielectric surface are disclosed. In embodiments an apparatus is configured for forming a remote plasma reaction between titanium tetrachloride (TiCl4), hydrogen (H2) and argon (Ar) in a region between a lid heater and a showerhead of a process chamber at a first temperature of 200 to 800 degrees C.; and flowing reaction products into the process chamber to selectively form a titanium material layer upon the silicon surface of the substrate.

The invention discloses a sample pretreatment method for measuring organic components in titanium tetrachloride and a measurement and analysis method, and belongs to the technical field of detection and analysis of the organic components in inorganic materials. The sample pretreatment method and the measurement analysis method comprise the following steps: carrying out liquid-liquid extraction on a titanium tetrachloride sample to be detected by adopting a combined reagent, fully reacting, standing for layering to obtain a clear, transparent, non-emulsified and clear-interface two-phase system, separating and collecting a subnatant liquid phase to obtain a solution to be detected for detecting and analyzing the organic components in titanium tetrachloride; and sending the solution to be detected to an organic analysis instrument for organic component detection and analysis by adopting a direct sample injection mode. The method provided by the invention can effectively solve the influence of deposition blockage, matrix effect, highly corrosive volatile gas of HCl and the like caused by high-concentration inorganic components such as Ti < 4 + >, Cl <->, H < + > and the like in TiCl4 on a detection instrument and a determination result.

The invention discloses a hierarchical porous Ti-MOR molecular sieve as well as a preparation method and application thereof, and belongs to the technical field of molecular sieves. The preparation method comprises the following steps: at room temperature, mixing a silicon source, an aluminum source, an alkali source, a seed crystal, a pore-enlarging agent and water to obtain a gel precursor for synthesizing the molecular sieve, carrying out hydrothermal crystallization and alkali treatment to obtain a hierarchical pore structure MOR molecular sieve with mesopores and macropores, carrying out acid pickling, and carrying out gas-solid phase same crystal substitution on the molecular sieve and titanium tetrachloride to finally prepare the hierarchical pore Ti-MOR molecular sieve. According to the hierarchical porous Ti-MOR molecular sieve disclosed by the invention, reactant molecules with relatively large dynamic diameters can effectively enter and exit zeolite pore channels, and the hierarchical porous Ti-MOR molecular sieve shows excellent catalytic performance in a cyclohexanone oximation reaction.

The invention discloses a preparation method and a detection method of a total carbon content test solution in titanium tetrachloride, and belongs to the technical field of component detection and analysis. The preparation method and the detection method comprise the following steps: adding water into a titanium tetrachloride sample to fully react, and heating and evaporating the obtained product to dryness at the temperature of not higher than 90 DEG C; then adding a hydrofluoric acid solution and a proper amount of water, heating and dissolving at the temperature of not higher than 80 DEG C to obtain a clear and transparent solution, and adding water to dilute and fix the volume to obtain the solution for testing the total carbon content in the titanium tetrachloride. And fully shaking up the test solution, and then immediately determining the total carbon content in the solution by adopting ICP-MS or ICP-OES (Inductively Coupled Plasma-Mass Spectrometry). The method disclosed by the invention is simple and rapid to operate, small in reagent dosage and low in test solution acidity, and can effectively solve the problems that coexisting components such as high-concentration Cl <-> and H < + > in the TiCl4 sample solution interfere a detection result and corrode an instrument.

The invention discloses a preparation method of a lithium aluminum titanium phosphate solid electrolyte nano powder material, which comprises the following steps: S1, weighing a lithium source, an aluminum source, a titanium source and a phosphorus source, and preparing a sol precursor; s2, performing microwave treatment to obtain a gelatinous intermediate; s3, carrying out annealing treatment after grinding to obtain nano titanium aluminum lithium phosphate powder; s4, placing the substrate in a plasma enhanced atomic layer deposition reaction cavity, vacuumizing, and introducing plasma activation gas; alternately pulse trimethylaluminum and titanium tetrachloride precursors, and depositing to obtain a gradient oxide intermediate layer; s5, introducing oxygen plasma to oxidize the residual precursor to form a gradient oxide coating layer; and S6, carrying out annealing treatment to obtain the lithium titanium aluminum phosphate solid electrolyte nano-powder material. According to the preparation method disclosed by the invention, the side reaction of the LATP powder and lithium metal is effectively inhibited, the interface stability and the ionic conductivity are improved, and the high-performance requirement of an all-solid-state lithium ion battery on a solid electrolyte material can be met.

The application provides a preparation method of a high-performance porous titanium-based intermetallic compound filter and relates to the technical field of filter preparation.The method comprises sequentially performing titanium raw material hydrogenation, micron-sized titanium hydride powder preparation, mixed powder preparation, mixed powder dehydrogenation alloying, micron-sized alloy powder preparation, cold isostatic forming mold preparation of the porous titanium-based intermetallic compound filter, titanium-based filter compact preparation and porous titanium-based intermetallic compound filter preparation.The application uses off-grade titanium as a matrix raw material, adds alloying elements such as aluminum and iron, combines the hydrogenation-dehydrogenation process with high-energy ball milling, and then realizes near forming of the porous titanium-based intermetallic compound filter through cold isostatic pressing and vacuum sintering.The prepared filter has high porosity, uniform pore size distribution and excellent corrosion resistance, can be used stably for a long time in a high-temperature and strong-corrosion environment, can realize efficient and high-precision purification of titanium tetrachloride, and is beneficial to industrial large-scale production and popularization.

This invention relates to the field of catalyst technology, and discloses an inorganic-organic composite catalyst and its application, as well as a method for synthesizing acryloyloxyethyltrimethylammonium chloride. The catalyst preparation method includes: reacting a hydrolyzed siloxane coupling agent with titanium tetrachloride at a pH value less than or equal to 1.5. The hydrolyzed siloxane coupling agent is R-Si(OH)3, where R is a C8-C20 alkyl group, and the molar ratio of the hydrolyzed siloxane coupling agent to titanium tetrachloride is 0.07-0.15:1. This catalyst ensures synergistic effects of solubility and active sites, and exhibits high catalytic performance even at low dosages. In the synthesis of acryloyloxyethyltrimethylammonium chloride, it effectively improves the reaction efficiency and selectivity of acryloyloxyethyltrimethylammonium chloride, further increasing the yield and purity of acryloyloxyethyltrimethylammonium chloride.

A novel method for artificial photosynthesis utilizing a chemical system that operates by harnessing visible light and directly capturing carbon dioxide and water from the atmosphere. The system is based on self-organizing complexes comprising visible-light-sensitive chromophores, such as 2-phenyl indole and 2-phenyl benzoxazole, along with titanium tetrachloride, which autonomously perform continuous, complex chemical operations to produce long-chain (C2 to C17) oxygenated organic materials. The process employs earth-abundant metal coordination compounds, including titanium (Ti), zirconium (Zr), hafnium (Hf), and vanadium (V), in the solid state. These compounds form carbonated metal derivatives upon hydrolysis, which are subsequently reduced through proton transfer from water. The system initially generates C1 materials that oligomerize via a novel self-catalyzed mechanism intrinsic to the system's operation. Monitoring and characterization of the chemical transformations have been conducted using high-resolution MALDI-TOF (matrix-assisted laser desorption ionization-time of flight) mass spectrometry, supported by infrared (IR) spectroscopy and nuclear magnetic resonance (NMR) analysis. This innovation represents a sustainable and scalable approach for converting atmospheric CO2 into valuable organic materials.

The present application provides a kind of Ziegler-Natta catalyst for preparing high molecular weight polyethylene with narrow molecular weight distribution, porous polymer microspheres are used as carrier, load the Ziegler-Natta catalyst doped with trace metallocene, the doping amount of metallocene is 0.01-2wt% of the amount of Ziegler-Natta catalyst.The preparation method includes the reaction of porous polymer microspheres with alkyl magnesium chloride, then with aluminoxane compound, then the product is reacted with titanium tetrachloride, finally, add metallocene to the product to obtain Ziegler-Natta catalyst.The present application uses porous polymer microspheres as carrier, dopes trace metallocene in Ziegler-Natta catalyst, and the composite catalyst prepared is used for the synthesis of high molecular weight polyethylene, and high molecular weight polyethylene with narrow molecular weight distribution can be obtained, which can meet the application needs of lithium ion battery separator materials.

The invention relates to the technical field of cleaning agents, in particular to a method for cleaning a titanium tetrachloride preheater. According to the method for cleaning the titanium tetrachloride preheater, provided by the invention, the titanium tetrachloride preheater is regularly cleaned by adopting dry ice. Dry ice cleaning is a physical process, a cleaning medium is solid carbon dioxide and does not chemically react with equipment materials (such as Inconel 601 alloy) and residual titanium tetrachloride, the problem that corrosive hydrogen chloride gas is generated by traditional water washing is completely eradicated, and an equipment body is protected. Efficient and lossless cleaning of the titanium tetrachloride preheater can be achieved, and the titanium dioxide quality problem caused by falling of a carbon scale layer of the titanium tetrachloride preheater is thoroughly solved.

The application discloses an olefin polymerization catalyst and a preparation method thereof, and the olefin polymerization catalyst is used for preparing a polypropylene thermoplastic elastomer, and the olefin polymerization catalyst contains silicon tetrachloride modified silicon dioxide, a transition metal component and a non-transition metal component; the transition metal component is titanium tetrachloride and / or titanium alkoxy, and the non-transition metal component is a magnesium-containing compound. The olefin polymerization catalyst has high initial activity and overall activity, and polypropylene particles with high porosity are obtained. The catalyst can obtain a polypropylene thermoplastic elastomer with high rubber content in the synthesis process of the polypropylene thermoplastic elastomer.

The application belongs to the technical field of catalysts, and provides a titanium nickel nitride-based palladium catalyst, a preparation method and application thereof. The method comprises the following steps: mixing titanium tetrachloride, nickel acetate tetrahydrate and ethanol under an ammonia atmosphere, and performing a reaction to obtain a complex powder; performing a nitriding reaction on the complex powder under an ammonia atmosphere to obtain titanium nickel nitride nanoparticles; mixing the titanium nickel nitride nanoparticles, a chloropalladic acid solution, water and a potassium borohydride solution, and performing a reaction to obtain the titanium nickel nitride-based palladium catalyst. The catalyst prepared by the application has a high specific surface area and is composed of two parts, namely a titanium nickel nitride nanoparticle carrier and a supported Pd nanocluster. Among them, nickel atoms are doped between the titanium nitride crystal lattices. The Pd nanocluster is supported on the surface of the TiNiN carrier, and by adjusting the loading amount of Pd atoms, efficient and high-selectivity catalysis of various environmental hydrogenation catalytic processes can be realized.

This invention relates to the field of coating technology, specifically to a protective coating for stone surfaces with good waterproof performance and its preparation method, comprising the following steps: S1. Treating microcrystalline cellulose to obtain product 1 for later use; S2. Reacting product 1 from step S1 with titanium tetrachloride to obtain nano-titanium dioxide for later use; S3. Mixing the nano-titanium dioxide from step S2 with sodium oleate and adjusting the pH to 6.5-7.5 to obtain product 2 for later use; S4. Performing surface synergistic hydrophobic modification treatment on product 2 to obtain functional filler. This invention discloses a protective coating for stone surfaces with good waterproof performance, using fluorinated acrylic resin as the base resin, incorporating functional filler, and combining it with a curing agent, mixed solvent, defoamer, and leveling agent. Through the synergistic effect between the components, this protective coating for stone surfaces possesses good waterproof performance as well as good resistance to ultraviolet aging and acid corrosion.

This invention relates to the field of titanium chemical technology and discloses a refining process for crude titanium tetrachloride, comprising: feeding crude titanium tetrachloride and a vanadium removal agent into the bottom of a distillation column, mixing them in the bottom, and completing the vanadium removal reaction; the material in the bottom is extracted by a refining circulation pump and heated, then returned to the upper middle part of the bottom for in-situ flash evaporation, and the flash-evaporated liquid phase falls back to the bottom of the bottom; the titanium tetrachloride vapor generated by flash evaporation enters the purification section at the top of the distillation column for distillation separation, and the refined titanium tetrachloride gas generated at the top is condensed and enters a reflux tank, part of which is returned to the top of the distillation column to control the distillation purity, and the other part is output as qualified refined titanium tetrachloride product. This invention also provides a system for implementing this process. This invention solves the technical problem that traditional processes require multiple separate devices such as a circulation pump tank and a flash evaporation tank, making production operation and condition control difficult.

This application discloses a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring, its synthesis method, and its application, belonging to the field of organic synthesis. The synthesis method uses a haloacenaphthene derivative as a starting material. First, a tetrahalogenated key intermediate containing an eight-membered ring is constructed via a titanium tetrachloride-catalyzed cyclization tetramerization reaction. Subsequently, this intermediate undergoes a cyclization coupling reaction with an alkyne compound in the presence of a palladium catalyst, silver salt, and phosphine ligand to generate a negative curvature polycyclic aromatic hydrocarbon containing an eight-membered ring. The synthesis method of this application avoids multi-step precursor synthesis, resulting in a concise process. It allows for the flexible introduction of functional groups such as trifluoromethyl and silyl groups, improving the solubility and processability of the material. The obtained product exhibits a non-planar configuration, a narrow optical band gap, and excellent electron transport properties, making it suitable for applications... n Applications include semiconductors, chiral optoelectronic materials, and nano-carbon materials.

The invention relates to a directional purification method and equipment for titanium tetrachloride in the field of preparation and purification of integrated circuit raw materials, the directional purification equipment comprises an oxidation device, the oxidation device comprises an oxidation kettle, a pure copper part and a spraying device, the pure copper part and the spraying device are contained in the oxidation kettle, and the spraying device is suspended above the pure copper part; a feeding hole connected with the spraying device is formed in the oxidation kettle, and a first heating device for heating the pure copper workpiece is arranged on the oxidation kettle; the rectifying system comprises a rectifying still, a rectifying tower connected to the top of the rectifying still and a second heating device used for heating the rectifying still, a material pressing opening and an inert gas opening are formed in the rectifying still, and a tower top condensation structure is formed at the top of the rectifying tower; a plurality of tower plates are arranged in the rectifying tower at intervals along the height direction of the rectifying tower. According to the directional purification method and equipment, the purification difficulty of the titanium tetrachloride can be effectively reduced, the production cost is reduced, and the purity of the titanium tetrachloride is effectively improved.

The invention belongs to the technical field of chemical synthesis of semiconductor materials, and particularly relates to a synthesis method of tetra (dimethylamino) titanium, which comprises the following steps: (1) reacting titanium tetrachloride with dimethylamine to generate an intermediate TiClx [N (CH3) 2] 4-x, where x is an integer from 0 to 4; (2) reacting dimethylamine with an organic metal lithium reagent to synthesize lithium dimethylamino (LiN (CH3) 2); and (3) reacting the intermediate obtained in the step (1) with lithium dimethylamino obtained in the step (2) to obtain tetra (dimethylamino) titanium. By adopting a step-by-step reaction strategy, the dependence on expensive n-butyllithium is fundamentally reduced, the raw material cost is remarkably reduced, meanwhile, the reaction process is optimized by generating an intermediate, the product yield is greatly improved, the generation of byproducts is effectively reduced, and the product purity is improved.

The application discloses a preparation method of high-purity titanium dioxide, which comprises the following steps: S1, titanium tetrachloride is slowly mixed with an aqueous hydrochloric acid solution to obtain a primary hydrolysis material containing titanium oxychloride and hydrochloric acid; S2, the primary hydrolysis material is mixed with water and subjected to secondary hydrolysis at 90-110 DEG C, and then solid-liquid separation is conducted after hydrolysis to obtain metatitanic acid precursor; and S3, the metatitanic acid precursor is calcined to obtain high-purity titanium dioxide. In the application, titanium tetrachloride is directly mixed with an aqueous hydrochloric acid solution under the conditions of a limited concentration and a limited amount at room temperature to generate a mixed solution of titanium oxychloride and hydrochloric acid, and then the mixed solution of titanium oxychloride and hydrochloric acid is subjected to secondary hydrolysis under the condition of a limited high temperature. Compared with direct hydrolysis of an aqueous titanium tetrachloride solution, the hydrolysis process does not need to be conducted under a low-temperature condition, there are less intermediate products, the reaction is easy to control, titanium oxychloride is fully hydrolyzed, and the hydrolysis rate is more than 99.0%.

The invention belongs to the technical field of water treatment, and particularly relates to an organic composite polymeric titanium coagulant and a preparation method thereof.The preparation method comprises the following steps that hydroxyl on sodium carboxymethylcellulose is activated and then compounded with dopamine, and a composite precursor is obtained; compounding the composite precursor with an organic coagulation material to obtain a polymer coagulation material; and compounding the polymer coagulation material with a titanium compound to obtain the organic composite polymeric titanium coagulant. According to the coagulant prepared by the method, the organic coagulation material, the sodium carboxymethyl cellulose and the dopamine are compounded with the titanium material, multiple groups cooperate with one another, the coagulation effect is good, the hydrolysis rate of titanium tetrachloride can be stabilized, and the problem that the pH is too low is solved.

The invention relates to the technical field of electrochemistry, membrane science and catalysis, in particular to a semi-buried nano-scale metal oxide catalyst constructed on an ion exchange membrane and a preparation method and application of the semi-buried nano-scale metal oxide catalyst. Spin-coating an ion exchange membrane with the precursor solution to obtain an ion exchange membrane with a precursor; the precursor solution comprises a titanium 2-ethylhexanoate solution, a titanium tetrachloride solution, a copper 2-ethylhexanoate solution or cobalt 2-ethylhexanoate; and irradiating the ion exchange membrane with the precursor under ultraviolet light to obtain the semi-buried nano-scale metal oxide catalyst constructed on the ion exchange membrane. The nanoscale metal oxide catalyst provided by the invention has strong anchoring and migration inhibition; hot spots are eliminated, and stability is improved; the dispersity and the activity are high.

The invention belongs to the field of electrode materials, and particularly relates to a titanium-coated silicon carbon material and a preparation method and application thereof. According to the preparation method, firstly, tetrabutyl titanate or titanium tetrachloride is vaporized and introduced into the fluidized bed to be subjected to the CVD deposition coating process, the one-step process is adopted, the process is short, the high-temperature TiO2 coating strength is higher, and the electrochemical performance is better.

The invention relates to the technical field of titanium sponge production, in particular to titanium sponge and a feeding production method and a feeding production device.The feeding production method comprises the steps that titanium tetrachloride liquid is continuously supplied at constant pressure and atomized into titanium tetrachloride fogdrop particles, and then the titanium tetrachloride fogdrop particles are conveyed into a reaction main cavity; the motion trail is accurately adjusted through an electrostatic field generator and a temperature detection point, the feeding rate, the atomization frequency and the airflow rate are adjusted, the reaction stability is ensured, finally, titanium tetrachloride fog drops react with a reducing agent, and titanium sponge is obtained; the device comprises a titanium tetrachloride storage tank, a constant-pressure feeding device, a high-frequency pulse atomizer and a reaction main cavity. According to the invention, the vortex airflow is used for guiding the droplet particle airflow to form a rotating air field, so that the spatial diffusivity and the introduction uniformity of the droplet particles are improved, the quality and the yield of the product are improved, the droplet particle entering stability is improved by accurately controlling the movement track of the droplet particles, and the production efficiency is improved. And the purity of the product and the overall production efficiency are improved.

The utility model discloses a vanadium removal device for producing titanium dioxide by a chlorination process, which comprises a vanadium removal reactor, a vanadium removal tower, a vanadium removal reboiler, a reflux tank, a first inspection tank, a second inspection tank and a vanadium removal condenser, and the vanadium removal reboiler is connected with the vanadium removal tower through a mineral oil adding assembly. The online vanadium analyzer is reasonable in structural design, the online vanadium analyzer is additionally arranged on the pipeline from the titanium tetrachloride outlet of the vanadium removal reboiler to the vanadium removal tower, meanwhile, the pipeline sight glass and the monitoring camera are additionally arranged on the feeding pipeline from the return tank to the inspection tank, and real-time data and monitoring pictures of the online vanadium analyzer are transmitted to the central control room. And central control room personnel monitor the vanadium content of the material at the outlet of the vanadium removal reboiler and the chromaticity of a refined product in real time, so that the problem of control lag caused by untimely discovery is solved, and accurate control on the addition amount of mineral oil is realized.

The application discloses a preparation method of an aggregation-induced emission fluorescent probe, and relates to the technical field of fluorescent probes, and comprises the following steps: synthesis of TPE-4NM, placing bis(4-(dimethylamino)phenyl) ketone and zinc powder in a double-neck flask, vacuumizing, filling argon, adding anhydrous tetrahydrofuran, slowly injecting titanium tetrachloride into the solution through a syringe, filtering, collecting the filtrate, concentrating under reduced pressure, separating through column chromatography, and obtaining TPE-4NM; synthesis of TPE-4NMB, dispersing TPE-4NM in anhydrous acetonitrile, then adding p-bromomethylphenylboronic acid, stirring and reacting overnight at room temperature, collecting the filter cake, redissolving after adding water, removing insoluble substances through centrifugation, freeze-drying the filtrate, and obtaining TPE-4NMB. ‑ The fluorescent probe can specifically detect and remove ONOO ‑ in a solution or cells, and after activation, exhibits typical aggregation-induced emission characteristics in an aqueous solution, has the advantages of strong water solubility, small toxicity, strong anti-interference ability and excellent selective removal of ONOO