37results about How to "Thorough response" patented technology

The invention relates to the technical field of preparation of silicon carbide ceramics, in particular to an in-situ reaction sintered silicon carbide ceramic and a preparation method thereof.The preparation method comprises the following technological stages which are conducted in sequence: S1, preparation of silicon carbide slurry, specifically, organic matter precursor raw materials are weighed according to the mass content percentage to form the silicon carbide slurry; s2, vacuum grouting: injecting the silicon carbide slurry in the vacuum grouting tank into the shaping mold from the bottom of the shaping mold to form a silicon carbide green body; and S3, in-situ reaction sintering is conducted, specifically, the silicon carbide green body is placed in a sintering furnace, heating, heat preservation and cooling are conducted on the silicon carbide green body in the argon atmosphere through a segmented temperature control technology, and the silicon carbide ceramic is obtained. The silicon carbide ceramic prepared by the method disclosed by the invention has relatively high density and excellent mechanical properties.

The utility model relates to a chloroacetic acid production device for processing glycine, which is characterized in that an interlayer is arranged in the outer wall of a chlorination kettle, the side end is connected with a liquid level meter a, and a discharge pipe is arranged on the lower surface; a radar liquid level instrument, a chlorine feeding pipe, an on-line component analyzer, an on-line thermometer, an on-line hydrometer, a condensation pipe, a catalyst filling pipe and an acetic acid feeding pipe are sequentially arranged on the upper surface, the lower end of the chlorine feeding pipe is connected with a gas distributor, and the condensation pipe is externally connected with a condenser; the catalyst filling pipe is externally connected with a catalyst metering tank; a liquid level meter b is connected to the side end of the kettle body, a discharging pipe is arranged on the lower surface of the kettle body, a water supplementing pipeline is connected to the right side of the upper surface of the kettle body, a liquid inlet pipe and an online moisture measuring device are arranged on the left side of the upper surface of the kettle body, and the liquid inlet pipe is communicated with the discharging pipe; the upper end of the stirrer is connected with a stirring motor, and the lower end is connected with a frame-type stirring paddle; the utility model has the advantages of reasonable structural design and good use effect.

The application discloses a coal pyrolysis method and device for realizing in-situ ring-enriching modification of tar, and the method is as follows: block coal is pyrolyzed to obtain coal tar, semi-coke and pyrolysis gas; the coal tar and a ring-enriching modifier are subjected to in-situ ring-enriching modification reaction in a coal pyrolysis device under hydrogen to obtain coal tar; the in-situ ring-enriching modification reaction temperature is 200-250 DEG C, and the reaction pressure is 101-120 KPa.The coal tar obtained by the method is rich in polycyclic aromatic hydrocarbons and is suitable for being used as a processing raw material of high-density fuel.The device introduces the ring-enriching modification reaction on the basis of the coal pyrolysis, so that the coal tar is subjected to in-situ ring-enriching modification in the pyrolysis, and the obtained coal tar is more suitable for being used as the processing raw material of the high-density fuel.The pyrolysis device has the characteristics of low cost and low heat loss.

The invention discloses a preparation method of ethylhexyl palmitate, and relates to the technical field of ethylhexyl palmitate. According to the method, firstly, isooctanol is gasified and then introduced into a methyl palmitate solution, ethylhexyl palmitate is prepared through transesterification, gaseous feeding can improve the instantaneous concentration of alcohol in a liquid phase, the reaction is promoted to be carried out in the positive direction, the reaction rate is increased, meanwhile, methanol generated through the transesterification method can be gasified and taken out of a system, and the yield of ethylhexyl palmitate is increased. Forward proceeding of the reaction is further promoted, so that the reaction is more thorough; secondly, chromium salt is used as a metal source precursor and a 2-sulfo-4, 4 '-biphenyldicarboxylic acid ligand to synthesize a catalyst, a biphenyl group in the ligand provides rigid and hydrophobic large pore channels and provides a local high-concentration reaction environment, gaseous isooctanol can be easily diffused into the pore channels of the catalyst and is in contact with enriched methyl palmitate, and the reaction efficiency is improved; and sulfonic acid groups uniformly distributed in the ligand serve as solid superacid, strong acid sites are provided, and the production efficiency is improved.

The present application belongs to the field of environmental protection engineering construction technology, especially a hydrogen fluoride washing device, aiming at the operation of hydrogen fluoride washing tower, because the waste gas is not fully contacted with lye, and hard crystals are easily formed during the reaction, attached to the filler and tower wall, resulting in the blockage of the filler, the increase of system pressure drop, the increase of fan energy consumption, and the need for manual cleaning, which exists safety risk and affects the washing efficiency, the following scheme is proposed, including a washing tower body, an air inlet is formed on the outside of the washing tower body, and an air inlet pipe is fixedly connected inside the air inlet, an air outlet is formed on the top of the washing tower body. The hydrogen fluoride washing device disclosed by the present application has the beneficial effects of automatically removing the crystals in the tower by rotating spraying and brushing and scraping components, and periodically extruding the filler by using a pressure plate, which can shake off the crystals, enhance the turbulence to improve the purification efficiency, and realize automatic continuous operation, avoiding the high-risk manual cleaning.

The utility model discloses a tail gas treatment device of high purity borate triethyl ester production, include: tail gas main pipe is used for with production device connection, transports the tail gas of production process generation, nitrogen gas main pipe is connected with tail gas main pipe, is used for to the nitrogen gas of tail gas main pipe inside import, detection subassembly is used for detecting the flammable gas content and pressure value in tail gas main pipe, absorption tower is used for absorbing tail gas, the utility model has the advantages of, realizes the tail gas treatment of high purity borate triethyl ester production, simple structure, convenient operation, handles thoroughly, avoids environmental pollution.

This invention discloses a method for the kinetic resolution of oxaspirone via organocatalytic hydrogenolysis. Using chiral phosphate CPA as a catalyst, Hantzsch ester as a hydrogen source, and racemic oxaspirone 2,4-dien-6-one rac-1 as a substrate, a series of axially chiral biaryl phenolic compounds 2 are synthesized via asymmetric hydrogenolysis, and the central chiral oxaspirone 1 is recovered. This invention offers advantages such as simple and practical operation, readily available raw materials, high resolution coefficient, and good enantioselectivity. Some of the axially chiral biaryl products have structures similar to axially chiral cannabinol, possessing potential medicinal value.

This invention discloses a peroxynitroso anion fluorescent probe with AIE effect, its synthesis method, and its applications. The near-infrared fluorescent probe TPS was designed and synthesized in this invention. It is nearly colorless under ultraviolet light irradiation but emits bright yellow fluorescence upon reaction with peroxynitroso anions. Detection showed that TPS reacts with ONOO in a HEPES:acetonitrile = 1:1 system. ‑ The response time was 100 min, after adding 120 uL of 0.5×10 ‑3 mol·L ‑1 ONOO ‑ The reaction is complete. TPS exhibits high specificity, reacting only with peroxynitrosoanion among various anions, demonstrating high sensitivity. TPS reacts with ONOO at pH 4-8. ‑ The ion response exhibits good stability, and TPS is effective against ONOO. ‑ The response exhibits good linearity, with a detection limit of 0.08232. µmol·L ‑1 Probe TPS and ONOO ‑ The reaction, after different concentrations of THF, exhibited a typical AIE effect.

This invention provides a method for preparing nano-calcium carbonate, comprising the following cyclical processes: (1) pretreatment of dry carbide slag raw materials; (2) leaching Ca from the dry carbide slag with ammonium chloride solution. 2+ And perform solid-liquid separation to obtain a high-purity calcium chloride solution and ammonia. (3) Use the ammonia in (2) to absorb low-concentration CO2 flue gas to obtain a mixed solution of ammonium carbonate and ammonium bicarbonate; (4) Mix the mixed solution of ammonium carbonate and ammonium bicarbonate obtained in (3) with the calcium chloride solution obtained in (2) to obtain calcium carbonate precipitate and ammonium chloride solution; (5) Use the ammonium chloride solution obtained in (4) to evaporate and concentrate, and return to step (2) to complete the entire cycle process. This method uses the escaped ammonia produced by the traditional ammonium chloride leaching CO2 to dry carbide slag to absorb flue gas to prepare ammonium carbonate and ammonium bicarbonate. It not only achieves efficient conversion of low-concentration flue gas CO2, significantly reduces conversion costs, and improves economic feasibility, but also uses the high-concentration ammonium carbonate of the conversion product to produce nano-CaCO3, which has significant environmental and economic benefits.

The application discloses a kind of phosphogypsum leachate processing method and device, it is related to sewage treatment technical field, comprising: reaction tank and fixedly connected in the inside of the reaction tank support seat, the inside of the support seat is rotatably connected with stirring rod, the top of the support seat is equipped with first drive motor, and the output of the first drive motor is fixedly connected with the stirring rod;Suction aid, located in the inside of the reaction tank, for auxiliary with the sewage at the bottom of the reaction tank is pumped to top and mixed reagent discharge.The application is by being provided with suction aid, so that sewage forms the circulating flow of "bottom-top", this process can avoid the local concentration of bottom sewage due to gravity deposition (or pollutant enrichment) too high, while let top not fully mixed sewage and bottom circulating sewage again contact, so that the sewage concentration in the whole reaction tank is more uniform.

The invention discloses a bio-based heat-resistant high-elasticity nylon elastomer and a preparation method thereof, and relates to the technical field of high polymer materials. The preparation method comprises the following steps: (1) adding bio-based dibasic acid, bio-based diamine, trimesic acid, a polyether soft segment, a reaction auxiliary agent and deionized water into a reaction container; (2) in a nitrogen atmosphere, heating and pressurizing to carry out a first reaction; (3) after the first reaction is completed, heating and pressurizing for second reaction; and (4) after the second reaction is completed, releasing the pressure, vacuumizing, and heating to carry out a third reaction. According to the preparation method, the polymerization reaction degree of the raw materials is higher, and the performance of the obtained product is better; the reaction is more thorough, and the utilization rate of each raw material and the yield of the product are obviously improved; meanwhile, the reaction efficiency can be improved, the production period is remarkably shortened, the energy consumption and the production cost are reduced, and the method is suitable for large-scale industrial production of the bio-based heat-resistant high-elasticity nylon elastomer.

The invention belongs to the technical field of supercritical water oxidation treatment, and particularly relates to a feed mixing device and method.The feed mixing device is arranged between an upper cover of a supercritical water oxidation reactor and a reaction inner barrel and comprises a mixing cavity (1), a main material pipe (4) arranged in the mixing cavity (1) and an auxiliary material pipe (6) communicated with the mixing cavity (1); organic waste liquid conveyed by the main material pipe (4) and oxygen conveyed by the auxiliary material pipe (6) are fully mixed in the mixing cavity (1) and then enter a reaction area in the reaction inner barrel. According to the feeding and mixing device, through the collaborative design of three-dimensional dispersion and convection impact, the feeding and mixing device is particularly suitable for treatment of organic waste containing radioactive elements, the mixing efficiency is high, the reaction is thorough, and secondary pollution caused by insufficient mixing is thoroughly avoided; the adaptability is high, and the operation is reliable; the system has the advantages of being intelligent, controllable and convenient to operate, does not need additional manual intervention, and meets the strict radioactive waste liquid treatment automation requirement.

This invention provides a fluorination method for a PSMA radiopharmaceutical intermediate, and further provides an Al based on this fluorination method. 18 A method for preparing F-labeled PSMA radiopharmaceutical formulations, through adjustments to the reaction system, effectively reduces the temperature requirements of the fluorination reaction during the labeling process while ensuring labeling aging, radiochemical purity of the final product, radiochemical conversion rate, and product yield. This invention is based on the Al provided by this fluorination method. 18 The preparation method for F-labeled PSMA radiopharmaceutical formulations exhibits good applicability, complete reaction, and no new impurities are introduced into the final product due to lower reaction temperature or adjustments to the reaction system. Furthermore, this preparation method can further reduce and control the types and amounts of impurities in the final product, further ensuring patient safety. In addition, the final product formulations obtained using the fluorination method or preparation method provided by this invention show good batch-to-batch homogeneity and good stability under storage conditions of 30℃±2℃ and 40℃±2℃.

The utility model discloses a naphtha dechlorination device, which relates to the technical field of dechlorination equipment and comprises a tank body, a mounting shell is mounted at the top end of the tank body, a rotating component is mounted in the mounting shell and comprises a rotating motor mounted in the mounting shell, and the output end of the rotating motor is connected with a first bevel gear. One side of the top end of the first bevel gear is in meshed connection with a second bevel gear, the middle of the second bevel gear is fixedly connected with a first rotating rod, one side of the bottom end of the first bevel gear is in meshed connection with a third bevel gear, the first rotating rod is arranged on the inner wall of the third bevel gear in a sleeving mode and is rotationally connected, and a fixing support is installed on the inner wall of the tank body; according to the utility model, the inner stirring blade and the outer stirring blade respectively rotate in opposite directions by utilizing the rotating assembly to form a complex three-dimensional flow field, and when the inner-layer stirring blade rotates in the forward direction, materials in a central area are driven to quickly circulate, so that a dechlorinating agent is quickly dispersed into a naphtha main body.

This invention belongs to the field of organic synthesis technology and discloses a method for preparing trans-3-chloro-2-propenylhydroxylamine hydrochloride. The method involves adding trans-1,3-dichloropropene to a ketoxime, a base, a phase transfer catalyst, and a first solvent for etherification. After the reaction, the mixture is first extracted with an extractant, and the resulting oil phase is then distilled to obtain the oxime ether. The oxime ether, an aqueous hydrochloric acid solution, and a second solvent are mixed and subjected to vacuum distillation in a distillation column to obtain trans-3-chloro-2-propenylhydroxylamine hydrochloride. This invention avoids the use of an aqueous base in the etherification stage, effectively preventing the hydrolysis of the ketoxime. The purified oxime ether obtained in the etherification step is purified by distillation, significantly reducing side reactions during the subsequent hydrolysis. Adding a solvent during the hydrolysis stage allows for better mixing of the aqueous hydrochloric acid solution and the oxime ether, resulting in more uniform acidification, a more complete reaction, and improved conversion and selectivity.

The utility model relates to the technical field of reactors, and provides a hydrogenation reactor with uniformly distributed hydrogen, which comprises a reactor body, a cover body is fixed at the top end of the reactor body, and a filter structure is mounted on one side of the top end of the cover body. By arranging the filtering structure, under the action of the flange plate, external connection of hydrogen is facilitated, when the clamping block moves into the clamping groove, the box cover and the filtering box are mutually fixed at the moment, the hydrogen enters the filtering cylinder through the air inlet pipe, under the action of the filtering cylinder, the hydrogen is conveniently filtered, the filtered hydrogen enters the device body through the connecting pipe, and the filtering effect is good. And a box cover is moved through a handle, so that the box cover drives a clamping block to move to the outer part of a clamping groove, at the moment, the box cover and the filter box are separated from each other, so that the filter cartridge is cleaned, the function of preventing blockage of the device is realized, and the applicability of the hydrogenation reactor with uniform hydrogen distribution in use is improved.

The invention relates to the technical field of organic synthesis, and provides a continuous synthesis method of 1-isothiocyanate-2-chloro-2-propylene, which comprises the following steps: S1, dissolving sodium thiocyanate in a mixed solvent, adding 2, 3-dichloropropene, and carrying out nucleophilic substitution reaction to obtain an oil phase and a saline water phase; s2, the oil phase is subjected to a rearrangement reaction, a 1-isothiocyanate-2-chloro-2-propylene crude product is obtained, rectification is carried out, and 1-isothiocyanate-2-chloro-2-propylene is obtained; s3, after the saline phase is extracted, an organic matter phase and a saline raffinate phase are obtained, an extracting agent in the organic matter phase is recycled to serve as a regeneration extracting agent to be reused in extraction treatment, desalting treatment is conducted on the saline raffinate phase, and a sodium chloride solid is obtained; the mixed solvent is water and polyhydric alcohol. According to the technical scheme, the problem of low yield of the 1-isothiocyanate-2-chloro-2-propylene in the prior art is solved.

The application discloses a kind of spin float nickel smelting equipment, including smelting furnace and is opened smelting cavity, the smelting cavity bottom end is laid melt, the top surface of the smelting furnace is fixedly connected nozzle component and smoke exhaust component, the top surface of the smelting furnace is fixedly connected feeding component near nozzle component position, the feeding component, nozzle component and smoke exhaust component are all communicated smelting cavity, the feeding component includes feeding pipe and reaction channel, and the feeding pipe is fixedly connected in the top surface of smelting furnace.The application is provided with reaction channel in feeding component, for preliminary cyclone reaction to material, then secondary cyclone reaction is carried out in smelting cavity, and the contact time with reaction gas is longer, the utilization of oxygen in reaction gas is improved, and the reaction is more thorough, and the application is provided with smoke exhaust component, and the combustible gas in high-temperature gas discharged can be burned and then discharged, to avoid directly discharging waste gas containing a large amount of combustible gas, to solve the safety hazard of smelting furnace exhaust.

The invention provides an auxiliary material formula of a magnetic powder core and the magnetic powder core, and belongs to the technical field of magnetic cores. The auxiliary material formula of the magnetic powder core comprises organic silicon resin, an active additive, an insulation enhancer, a lubricant and a solvent; the active additive is aluminum acetylacetonate or zirconium acetylacetonate; the insulation reinforcing agent is hexagonal boron nitride or modified boron nitride; the modified boron nitride is silane coupling agent surface modified boron nitride; the lubricant is selected from at least one of amide wax, oxidized polyethylene wax and maleic anhydride grafted polyethylene wax. The auxiliary material formula is used for carrying out surface coating, compression molding and heat treatment on the magnetic powder to form the magnetic powder core. The invention provides an auxiliary material formula with ultrahigh magnetic conductivity, ultralow loss, excellent direct-current bias and high-temperature stability, and the auxiliary material formula is used as an insulating coating material of a magnetic powder core; the magnetic powder core prepared by the preparation method disclosed by the invention realizes extremely low power loss while keeping high magnetic conductivity.

The present application relates to the technical field of chemical materials, in particular to an optical transparent adhesive for flexible folding display screen, which is compounded by modified acrylic copolymer, acrylic resin and the like; firstly, the nano-silicon dioxide is treated by KH570 silane coupling agent, the vinyl group is introduced into the silicon dioxide to obtain the vinyl modified silicon dioxide, then the acrylic ester monomer, the vinyl modified silicon dioxide and the vinyl POSS are mixed, and the polymerization reaction is carried out under the action of the initiator, so that the acrylic ester copolymer containing the silicon dioxide and the POSS group chain segment is obtained, and the modified acrylic copolymer with organic-inorganic hybrid network is formed; on the one hand, the silicon dioxide is treated by KH570, which can effectively improve the compatibility of the silicon dioxide in the component, avoid the agglomeration phenomenon of the silicon dioxide during the reaction, make the silicon dioxide reaction more sufficient and complete, and improve the stability and consistency of the adhesive performance.

The application belongs to the technical field of desulfurizer, and discloses a natural gas desulfurizer, a preparation method and application thereof, the natural gas desulfurizer comprises 2-(2-morpholine-4-ethoxy)-ethanol and N-methyl diethanolamine with a molar ratio of (1-3):(2-4). The removal rate of H2S reaches more than 98%, and the removal rate of organic sulfur reaches 70%-75%. The application expands the application range of N-methyl diethanolamine as a main agent, and can be used for refining and removing hydrogen sulfide and organic sulfur in the acidic gas in the natural gas, coal chemical industry and petroleum chemical industry process. The preparation process of the composite desulfurizer is simple, the cost is low, the environmental pollution is small, and the application effect is outstanding.

The application discloses a multi-phase reactor, which comprises a reactor shell with a reaction cavity formed inside, a second material inlet pipe and a first material inlet pipe communicated with the reaction cavity, wherein the first material inlet pipe is used for conveying the first material to the reaction cavity; a gas distributor located in the reaction cavity, the second material inlet pipe is communicated with the gas distributor, and the second material conveyed by the second material inlet pipe is conveyed to the reaction cavity through the gas distributor; and a draft tube located in the reaction cavity, wherein a plurality of air passages are arranged on the draft tube along the circumference of the reactor shell, and the draft tube is used for axial flow guiding and radial cutting in the reaction cavity. The application solves the technical problems of uneven temperature field and reaction field distribution of the multi-phase reactor, and influences the reaction efficiency and increases the material consumption.

The invention discloses a method for synthesizing chiral 4, 5, 6, 7-tetrahydropyrazolo [1, 5-a] pyrimidine through manganese catalysis, which is characterized in that pentacarbonyl manganese bromide, a chiral NNP ligand and alkali are used as a catalytic system, a pyrazolo [1, 5-a] pyrimidine derivative is used as a substrate, and asymmetric hydrogenation is carried out to synthesize the chiral 4, 5, 6, 7-tetrahydropyrazolo [1, 5-a] pyrimidine derivative. The method has the advantages of simple and practical operation, easily available raw materials, high enantioselectivity, good yield, high atom economy of the reaction, environmental friendliness and the like.

This invention relates to the field of pharmaceutical chemical synthesis technology, specifically disclosing a method for preparing a stable cefixime side-chain acid active ester. The invention involves adding dibenzothiazole disulfide, cefixime side-chain acid, an organic amine, and triethyl phosphite to a reaction solvent for a condensation reaction; then adding a crystallization solvent to the reaction system, cooling to allow crystallization, separating the solid and liquid phases, and washing the resulting solid with a phosphate buffer to obtain the cefixime side-chain acid active ester; the particle size of the dibenzothiazole disulfide is D90 = 20 μm~45 μm; the pH of the phosphate buffer is neutral. This invention couples the condensation reaction and crystallization process into one step, synergistically adding an organic amine and triethyl phosphite, purifying with a specific neutral phosphate buffer, and controlling the particle size of the raw material DM, achieving product quality assurance throughout the entire process from reaction source to purification. Accelerated testing has confirmed that the sample exhibits high stability.

This invention relates to the field of alkane conversion equipment technology, and discloses an alkane conversion equipment for high-purity nitrogen hydrodeoxygenation, including a distribution mechanism installed on the inner wall of a tank, with a distribution disc fixedly connected to the inner wall of the tank; a separation mechanism installed on the inner wall of the distribution mechanism; and a flow guiding mechanism installed on the inner wall of the distribution mechanism. Solid particles present in the gas are retained in an arc-shaped plate above the arc plate due to changes in gas flow direction. The solid particles in the arc plate are then carried away by subsequent gas flow, allowing them to be guided to the arc ring via a guide ring, and then, driven by the gas flow and blocked by a shielding ring, enter the storage tank. This method prevents a large number of solid particles from entering the catalyst bed, thereby blocking the pores inside the catalyst and causing the gas to bypass the blocked catalyst area, forming a channel and reducing reaction efficiency.

The invention provides a green and environment-friendly high-alumina fly ash multi-component synergistic extraction method, and belongs to the technical field of fly ash extraction. The preparation method comprises the following steps: adding sodium carbonate into fly ash serving as a raw material, mixing and calcining to obtain a nepheline phase which is easily soluble in an acidic medium; then adding sulfuric acid to decompose the sintered product to dissolve the sintered product, heating and aging to separate silicon from aluminum to obtain silica gel and a metal salt solution, using the silica gel to prepare white carbon black, and separating and purifying the metal salt solution to prepare aluminum oxide, iron oxide, calcium hydroxide and magnesium hydroxide. According to the method, the problems of low utilization rate and impure product in the traditional extraction process are better solved, the utilization rate of useful substances in the fly ash can reach 95% or above, and the method is more environment-friendly, so that green, refined and efficient utilization of the fly ash is realized.

The invention provides self-repairing TPU (thermoplastic polyurethane) optical resin as well as a preparation method and application thereof. According to the self-repairing TPU optical resin disclosed by the invention, dithio diethylene glycol is deliberately selected as a cross-linking agent to introduce a dynamic disulfide bond, so that a material network is endowed with dynamic reversibility; meanwhile, a thiocarbamate bond and a dynamic metal coordination bond are introduced to a polyurethane main chain, the multi-dynamic bond action mechanism breaks through the bottleneck of low self-repairing efficiency of a single dynamic bond in the past, and on the basis of ensuring the mechanical strength performance under the normal temperature condition, the material can be effectively repaired when being subjected to microscopic damage, so that the self-repairing efficiency of the material is greatly improved. And the exchange reaction of covalent hydrogen bonds and disulfide bonds can be triggered through external stimulation, so that the self-repairing of the damaged part is realized, the anti-scraping performance of the optical element is remarkably improved, and the service life is prolonged. The TPU optical resin provided by the invention has high-efficiency self-repairing performance, is recycled and regenerated, and realizes performance balance among high refractive index, low dispersion and mechanical strength.

The invention discloses a method for preparing a barium titanate functional coating by a one-step method, which comprises the following steps of: 1, adding barium hydroxide octahydrate serving as a barium source into excessive glacial acetic acid, heating in a constant-temperature water bath, stirring until the solution is clear and transparent, and cooling to room temperature to obtain a solution A with the pH value of 5.0-6.8; 2, adding tetrabutyl titanate serving as a titanium source into absolute ethyl alcohol, and uniformly stirring to obtain a solution B; 3, dropwise adding the solution B into the solution A in a room-temperature stirring state; after the solution B is dropwise added, continuously stirring, mixing and aging to obtain a barium titanate precursor solution; fourthly, the metal material serves as a base body and is pretreated, and a pretreated base body is obtained; and (5) spraying the barium titanate precursor solution obtained in the step (3) onto a pretreated substrate through a solution plasma spraying process to prepare the barium titanate functional coating. The method is simple in process, and the obtained coating is uniform in component and has certain density and dielectric property while having relatively good hardness.

The invention relates to the technical field of flue gas treatment, and discloses a desulfurization and denitrification integrated absorption tower and a using method thereof.The interior of a tower body of the absorption tower is sequentially provided with a desulfurization absorption area, a gas oxidation area and a denitrification absorption area from bottom to top, and the desulfurization absorption area is provided with a desulfurization absorption liquid pool and a desulfurization absorption liquid spraying device; the gas oxidation zone is provided with an oxidant injection grid for injecting ozone, and a plurality of nozzles with downward injection directions are uniformly arranged on the oxidant injection grid; the denitration absorption area is provided with a denitration absorption liquid pool and a denitration absorption liquid spraying device, a first demister is arranged between the desulfurization absorption area and the gas oxidation area, and an isolation structure used for preventing denitration absorption liquid from being sprayed downwards to the gas oxidation area is arranged between the gas oxidation area and the denitration absorption area. Occupied space is small, treatment cost is low, and operation is safe and stable.