28results about How to "Low purity" patented technology

The invention relates to a method for removing impurities formed by an electrochemical reaction from an electrolyte contained in a first vessel, said electrochemical reaction being an alkaline electrolysis. Said first vessel contains one or more catalysts. Said method comprises supplying power to said catalysts, thereby initiating said electrochemical reaction forming said sulfate-carbonate impurities. Furthermore, a liquid connection between said first and second vessel is established, wherein said second vessel contains a barium source. Thereby, a flow of said electrolyte from said first vessel to said barium source is established. Thereby, a barium suspension comprising a mixture of sulfate and carbonate is formed. Finally, said barium suspension is separated from said electrolyte, forming a purified electrolyte.

This invention discloses a resource recovery method for low-phosphorus ferric phosphate production wastewater, belonging to the technical field of ferric phosphate wastewater treatment and resource recovery. The method includes the following steps: reacting the low-phosphorus ferric phosphate production wastewater with an iron source solution in a first precipitation reaction to obtain hydroxyferric phosphate precipitate and a first filtrate; the pH of the first precipitation reaction is 0.8~1.8; reacting the first filtrate with a catalytic oxidant in a second precipitation reaction to obtain manganese dioxide precipitate and a second filtrate; the pH of the second precipitation reaction is 6.0~9.5, and the redox potential is -50 to 250 mV; subjecting the second filtrate to membrane concentration treatment to separate desalinated water and concentrated water; subjecting the concentrated water to a first evaporation crystallization to obtain evaporation crystallization mother liquor and ammonium sulfate crystals; and subjecting the evaporation crystallization mother liquor to cooling crystallization to obtain magnesium ammonium sulfate crystals and cooling crystallization mother liquor. This invention achieves efficient recovery of phosphorus, manganese, monophosphate, and magnesium from low-phosphorus ferric phosphate production wastewater, with high product purity.

The invention discloses an extraction process of citrus essential oil and the citrus essential oil prepared through the extraction process, and belongs to the field of natural perfume extraction.The extraction process of the citrus essential oil comprises the following steps that S1, peel of disinfected and cleaned fresh citrus fruits is obtained; s2, sequentially crushing and squeezing the fruit peels under the assistance of ultrasonic waves or without ultrasonic waves, and then separating out solid matters to obtain virgin juice; and S3, standing and layering the virgin juice in an environment of 0-10 DEG C, then centrifuging at a controlled temperature at a centrifugal speed of 2000-60000r / min for 1-180min, and separating out upper-layer essential oil within 30min after centrifugation is finished, so as to obtain the citrus essential oil. The process can improve the essential oil yield, reduce the water content and maintain the natural fragrance close to that of fresh fruits, and can be applied to the field of food and the field of daily chemicals.

A method for preparing nickel powder through electrolysis of nickel sulfate waste liquid in one step comprises the steps that the nickel sulfate waste liquid is diluted to a certain concentration by controlling the reduction degree of Ni < 2 + > under different cathode conditions, and different nickel electrolysis products are selectively prepared in the diluent; ti plated TaO2 / I rO2 alloy is used as an anode, a Ti sheet is used as a cathode, electrolysis is carried out under the conditions that the current density is 30-2000A / m < 2 >, the electrolyte temperature is 20-60 DEG C and the nickel ion concentration is 0.025-1.0 mo l / L, and nickel powder is obtained through electrodeposition on the cathode after electrolysis is finished; a circulating pump is used for recycling waste liquid; the electrolytic nickel powder prepared through the method is simple in required equipment, short in technological process, mild in condition, low in production cost, high in efficiency, environmentally friendly, suitable for one-step preparation of the nickel powder through the high-impurity nickel sulfate waste liquid and suitable for one-step preparation of the electrolytic nickel powder through the pure nickel sulfate solution. The method is especially suitable for environmental protection enterprises of nickel-containing waste liquid.

The invention belongs to the technical field of high-performance special materials, and discloses a one-step method for preparing silicon alkyne resin MDPES. The method comprises the following steps: mixing 2-halophenylacetylene, dichlorosilane and a solvent, adding magnesium, and heating for reaction; after the reaction is finished, adding acid liquor for neutralization, and then extracting and layering to obtain an organic layer; then concentrating the organic layer to obtain a concentrated solution, and finally carrying out molecular distillation on the concentrated solution to prepare the silicon alkyne resin MDPES. Wherein the 2-halogen phenylacetylene comprises one of 2-iodine phenylacetylene, 2-bromophenylacetylene and 2-chlorophenylacetylene; and the molecular formula of the dichlorosilane is R1R2SiCl2. According to the method provided by the invention, the 2-halophenylacetylene and the dichlorosilane are subjected to one-step reaction in the anhydrous solvent to prepare the product with high purity and high yield. The method uses few raw materials, the preparation steps are simple, and the production efficiency is high; and the prepared product has the advantages of high yield, high purity, safety, environmental protection and easiness in industrialization.

The utility model discloses an extraction device for green cardamom essential oil, relates to the technical field of essential oil extraction, and solves the problems that an oil-water separator used during essential oil extraction in the prior art cannot accurately discharge oil liquid, and the yield is low or the purity is low. The device comprises a distiller, the distiller is connected with a condenser, the condenser is connected with a separator, the separator comprises a first-stage separation cylinder connected with a condensation outlet of the condenser, the lower end of the first-stage separation cylinder is connected with a second-stage separation cylinder, and the side wall of the first-stage separation cylinder and the side wall of the second-stage separation cylinder are each provided with an oil discharge assembly and an oil discharge pipe. The diameter of the primary separation cylinder is greater than that of the secondary separation cylinder. By arranging the first-stage separation barrel, first-stage oil-water separation can be carried out, a small amount of remaining oil liquid is discharged into the second-stage separation barrel with a small diameter for separation, so that the separation difficulty is reduced, the separation precision is improved, and the influence of hydrolat on the purity and yield of the oil liquid in the separation process is reduced in a manner of reducing the contact area of the oil liquid and hydrolat.

The application discloses a method for producing Ac-225 mother liquor by irradiating a thorium target, and comprises the following steps: dissolving the irradiated thorium target to obtain an irradiated thorium target solution; separating and removing thorium and Ac in the irradiated thorium target solution to obtain a Ra crude product liquid; passing the Ra crude product liquid through a TK102 resin column, washing the TK102 resin column with a 2.5-3.5 mol / L hydrochloric acid solution for 13-15 column volumes, and obtaining a Ra elution liquid; placing the Ra elution liquid for a set time, diluting the Ra elution liquid, and making the hydrochloric acid concentration in the Ra elution liquid reach 0.01-0.05 mol / L to obtain a dilution liquid; passing the dilution liquid through a TK101 resin column, collecting the effluent; washing the TK101 resin column with 0.01-0.05 mol / L hydrochloric acid, and collecting the washing liquid; and mixing the effluent and the washing liquid to obtain the Ac-225 mother liquor product.

The invention belongs to the technical field of biological medicines, and particularly relates to a method for promoting proliferation of immature bone marrow-derived macrophages and polarization of the immature bone marrow-derived macrophages to M1 through stress application culture and application of the method. The in-vitro stress application culture method of the macrophages from the immature bone marrow has the characteristics of high stability, high amplification efficiency, polarization controllability, high purity, flexibility in application, low production cost and the like; the problems that a traditional cell factor induction method is low in amplification efficiency, poor in polarization controllability, insufficient in purity and the like are solved, the purity of the obtained M1 type macrophage reaches 90% or above, stability is high, and cost is low. The method can be applied to preparation of macrophage drugs for immunoregulation, anti-fibrosis, metabolism regulation, anti-tumor CAR-M and the like, tissue regeneration biological materials, anti-inflammatory drugs, in-vitro diagnosis products and the like, dosage forms are diversified, and a standardized cell preparation scheme is provided for the related biological medicine field.

The invention discloses a synthetic method of 5-aminolevulinic acid and derivatives thereof, 5-aminolevulinic acid and derivatives thereof and application, and relates to the technical field of chemical synthesis, and the synthetic method comprises the following steps: mixing monoalkyl succinate, an inert solvent and an activating reagent, and carrying out acylation activating reaction to obtain a first intermediate; mixing the first intermediate, nitromethane, an alkaline agent, a molecular sieve and an organic solvent, and carrying out nitro condensation reaction to obtain a second intermediate; and mixing the second intermediate, a solvent and a catalyst, and carrying out catalytic hydrogenation reaction to obtain the 5-aminolevulinic acid and the derivative thereof. By adopting the steps, only three-step reaction is needed from the initial raw material to the target product, the reaction conditions are mild and efficient, the 5-aminolevulinic acid and the derivative thereof prepared by the process are white solids, the chemical purity of the 5-aminolevulinic acid and the derivative thereof can reach more than 96.0% and the yield can reach more than 70% through HPLC (High Performance Liquid Chromatography) analysis, and the requirements of industrial large-scale production are completely met.

The application discloses high-purity sulfur-containing active nickel particles and a preparation method thereof. A nickel sulfur / nickel compound is added into a nickel melt, and refining is carried out under electromagnetic stirring to obtain a nickel sulfur melt. Then, the nickel sulfur melt is cast in a mold to obtain a high-purity nickel sulfur ingot. The ingot is subjected to hot isostatic pressing to obtain a compacted blank. The blank is cut according to the size of a finished product to obtain the high-purity sulfur-containing active nickel particles. The nickel sulfur / nickel compound is selected from one of a nickel block wrapped with a nickel sulfur compound, a nickel foil wrapped with a nickel sulfur compound and a nickel sintered body containing a nickel sulfur compound. The application adds sulfur into nickel by a specific method through vacuum induction smelting, and realizes preparation of a nickel sulfur ingot with high-purity composition, stable sulfur content and no segregation by combining with electromagnetic stirring in the whole process. Subsequently, a targeted processing technology is adopted according to the large brittleness of the nickel sulfur to complete batch production of the high-purity sulfur-containing active nickel particles. The preparation method is low in comprehensive cost, small in environmental pollution and suitable for industrialized production.

The application discloses a kind of for polyolefin high-pressure flare gas light hydrocarbon recovery complex absorbent, preparation method and recovery system and recovery method, it is related to petrochemical tail gas resource utilization technical field.Complex absorbent includes: main absorption component, auxiliary absorption component, heat stabilizer and viscosity modifier by mass fraction.The system includes compression impurity removal unit, absorption desorption purification unit and catalytic oxidation tail gas treatment unit, and forms integrated complete equipment.The method includes compression impurity removal, low-temperature oil absorption, flash evaporation, desorption purification, product separation and catalytic oxidation tail gas purification process.The application solves the technical problems of poor C2 selectivity, high nitrogen co-absorption rate, high temperature easy deterioration, high viscosity of existing absorbent, low separation precision of existing device, high energy consumption and tail gas not up to standard through the synergistic effect of four-function complex absorbent and double-tower coupled integrated device, realizes the efficient recovery and resource utilization of C2+ Light hydrocarbon in high-nitrogen-content polyolefin high-pressure flare gas.

This invention relates to the field of N-(2,4-dinitrophenyl)-4-nitrobenzamide preparation technology, specifically to a green method for preparing nitramide compounds. The method involves adding a catalyst and dispersant to a reactor and mixing them uniformly. Then, a first and a second stream of materials are simultaneously added dropwise to the reactor for reaction. The temperature within the system is controlled during the dropwise addition. After the dropwise addition is complete, the temperature is increased to continue the reaction. After the reaction is completed, N-(2,4-dinitrophenyl)-4-nitrobenzamide is obtained through post-treatment. The first stream is a dispersion containing 4-nitro-N-phenylbenzamide, and the second stream is a nitrating agent consisting of a uniform mixture of N₂O₅ and nitric acid. This preparation method features high product conversion rate, a mild reaction process, safe and controllable production process, effectively reduces the amount of residual intermediates, and minimizes pollution.

This utility model relates to the field of fluid separation technology, and more particularly to a retention chamber for separating mixed gases. The retention chamber has a hollow structure and can be positioned radially distal to the center of rotation of a primary separation device, rotating coaxially and synchronously with the primary separation device, and the two are connected. A Brownian motion suppressor is provided circumferentially inside the retention chamber, which effectively prevents the remixing of different gas components after separation, improving separation efficiency. Simultaneously, the retention chamber has a first end and a second end arranged axially inclined, with the internal space gradually increasing from the first end to the second end. A first exhaust port is located radially proximal to the first end, and a second exhaust port is located radially distal to the second end. This inclined shape allows different gas components to accumulate in different areas, which is beneficial for improving the purity of the separated gas and facilitates disassembly. This retention chamber has a simple overall structure and small size, and can be used to improve various traditional centrifuge devices on the market.

This invention discloses a low-temperature solid-phase synthesis method for manganese tetroxide, belonging to the field of inorganic functional material preparation technology. The preparation method includes: preparing a targeted organic ammonium salt surface modifier; preparing a composite precursor by high-energy ball milling of a manganese source (γ-type MnOOH) and a rhombohedral MnCO3, a modifier, and a composite auxiliaries; obtaining a crude product through a low-temperature solid-phase reaction at 220-350℃ under a nitrogen or argon inert atmosphere; and obtaining the final product through fluidized bed desorption, air jet milling depolymerization, sieving, acid washing, and vacuum drying. To address the shortcomings of existing solid-phase synthesis methods, such as high energy consumption, easy generation of impurities, and product agglomeration, this invention proposes a synergistic regulation and low-temperature solid-phase synthesis technology. Through specific manganese source formulation and the synergistic effect of modifiers and auxiliaries, pure-phase synthesis at 220-350℃ is achieved, solving problems such as high-temperature dependence and impurity phase formation. The product has a regular crystal structure, high purity, and good dispersibility, making it suitable for high-end lithium-ion battery cathode materials and other applications. The process is energy-efficient and environmentally friendly.

The application relates to high-sphericity nano tetragonal barium titanate for MLCCs and a preparation method thereof. The technical scheme is as follows: a titanium source, a dissolving agent and potassium perchlorate are mixed to obtain mixed material A; the mixed material A is heated twice under air condition, is preserved, is naturally cooled to obtain a reaction product; the reaction product is washed with distilled water I, is separated, is dried to obtain titanium dioxide powder; the titanium dioxide powder and barium oxide are mixed to obtain mixed material B; the mixed material B, ethylene glycol, pure water and an anionic surfactant are mixed to obtain a mixed solution; the mixed solution is moved to a polytetrafluoroethylene reaction kettle, is placed in a microwave heating furnace, is heated, is preserved, is naturally cooled and is filtered; the filtered product is washed with distilled water II, is separated, is dried to obtain high-sphericity nano tetragonal barium titanate for MLCCs. The product prepared by the application has high purity, high sphericity, small particle size, good dispersity and high tetragonality.

The present application provides a method for preparing lithium bis(fluorosulfonyl)imide, including the following steps: (a) a synthesis step; (b) an evaporation step; (c) an extraction step; (d) an alkalinization step; (e) a dehydration step; (f) a desolventization step; (g) a crystallization step; and (h) a drying step; lithium bis(fluorosulfonyl)imide prepared by the method, an electrolytic solution containing the lithium bis(fluorosulfonyl)imide, and a secondary battery thereof.

The application discloses a control method, a storage medium and a terminal based on a Brillouin laser Kerr optical frequency comb of an orthogonal polarization mode, and is based on a control module; the method comprises the following steps: an initial control step; a secondary pumping control step: a second control command is sent to an adjustable wavelength laser, and based on monitoring data of a fourth optical detector used for monitoring a state of a stimulated Brillouin laser of a cross-polarization TM mode after polarization beam splitting of light, a pumping laser wavelength blue shift speed and an optical power are further adjusted until a Kerr optical frequency comb state appears. The application generates a stimulated Brillouin laser of an orthogonal polarization mode to form a Kerr optical frequency comb through secondary pumping, filters specific comb tooth interval light waves of the optical frequency comb, performs beat frequency on the filtered light wave signals, and obtains a required microwave signal output.

The application provides a material preparation method based on purification and delamination synergistic optimization of montmorillonite, and comprises the following steps: S1, pretreating natural montmorillonite raw materials; S2, centrifugal purification by using a purification parameter linear optimization model; S3, preparing a montmorillonite delamination precursor; S4, ultrasonic delamination treatment by using a delamination effect dynamic regulation model; S5, purification and delamination synergistic optimization adjustment; S6, delamination montmorillonite stabilization treatment; S7, material forming and drying; S8, material sintering and performance characterization. Through the whole-process intelligent synergy of "raw material characteristics-purification parameters-delamination effect", the application breaks through the limitations of traditional processes and realizes efficient and stable preparation of montmorillonite materials.

The invention discloses a system and a method for recycling valuable metals of a lithium ion battery through cooperation of wet grinding and vacuum pyrolysis. The recycling method comprises the following steps: completely discharging a waste lithium ion battery, disassembling and separating a positive plate and a negative plate, crushing and sieving, and collecting undersize powder; mixing with a grinding medium, and carrying out ball milling by adopting a ball milling tank; the slurry is sieved after being dried, and screen underflow is collected and is electrode black powder; putting the electrode black powder into a vacuum pyrolysis reactor, vacuumizing and then pyrolyzing; and after the pyrolysis is finished, cooling to room temperature under vacuum or inert gas protection to obtain a valuable metal solid product. The method is carried out at a relatively low temperature, metal oxidation can be inhibited, generation of harmful gas is reduced, separation and pyrolysis with higher adaptability to raw materials are realized, and directional recovery is realized.

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 utility model discloses a kind of methanol washing device waste heat recovery systems, including methanol water washing tower, separation tower cooler, separation column reflux tank, first reboiler, hot regenerator, hot regenerator cooler, hot regenerator column reflux tank, second reboiler, heat exchanger and water washing tower;The top outlet of methanol water washing tower is also communicated with the liquid inlet of hot regenerator by pipeline;The gas phase outlet of hot regenerator column reflux tank is communicated with the heat medium inlet of heat exchanger by pipeline, the heat medium outlet of heat exchanger is communicated with the bottom air inlet of water washing tower by pipeline, and the top exhaust port of water washing tower is communicated with the air inlet of flare by pipeline.The advantage is that: the efficient compact waste heat recovery system proposed in the utility model, by optimizing heat medium circulation, realize the step-by-step utilization of low-temperature heat energy, finally reduce steam consumption, provide key technical support for industry green low-carbon transformation.

This application discloses a method for preparing lithium manganese iron phosphate, a cathode material, and a lithium-ion battery, relating to the field of battery technology. This application uses a manganese source and an iron source to obtain manganese iron oxide through solid-state sintering, wherein at least one of the manganese source and the iron source is an oxide. The manganese iron oxide is then mixed with a lithium source and a phosphorus source in a solid-state mixture, and solid-state sintering is performed at 350–900°C to obtain lithium manganese iron phosphate. The preparation method provided by this application can reduce the use of sulfate, thereby reducing the generation of toxic sulfur dioxide gas. Furthermore, it facilitates the synthesis of high-purity, high-tap-density lithium manganese iron phosphate materials, reduces process costs, and improves the performance of the obtained lithium manganese iron phosphate materials. The cathode material and lithium-ion battery provided by this application include lithium manganese iron phosphate prepared by the above method.

The present application belongs to the technical field of wet-process phosphoric acid and resource comprehensive utilization, and discloses a method for preparing phosphoric acid and calcium chloride by decomposing medium and low grade phosphate rock with by-product hydrochloric acid. (1) The phosphate rock is mixed with a hydrochloric acid solution, sodium chloride is added, and after reaction, solid-liquid separation is performed to obtain an acidolysis solution; (2) the acidolysis solution is separated and treated to obtain a phosphoric acid solution and a calcium chloride solution; (3) the calcium chloride solution is neutralized and purified by using a stepwise pH value control method; (4) the purified calcium chloride solution is concentrated, sodium chloride is precipitated and separated due to solubility difference, and is returned to step (1) for recycling, and the concentration, crystallization and drying are continuously performed to obtain a calcium chloride product. The present application effectively solves the problems of difficult solid-liquid separation and low value of by-product calcium chloride caused by the generation of silica gel in the acidolysis process of medium and low grade phosphate rock, the decomposition rate of the phosphate rock is more than 98%, high quality phosphoric acid is obtained, the full utilization of by-products is realized, and the production cost and energy consumption are significantly reduced.

This invention discloses a method for purifying oxazepam. Crude oxazepam is added to an amide-based dipolar proton-dependent solvent, kept at a constant temperature until dissolved, then activated carbon is added for decolorization, and the mixture is filtered to obtain a filtrate. Water is added dropwise to the filtrate at 45–55°C, the temperature is lowered after addition, and the mixture is kept at 20–25°C. The mixture is then filtered to obtain a primary purified wet oxazepam product. This primary purified wet oxazepam product is added to a ketone solvent, heated, and kept at 40–50°C. After cooling and crystallization, the product is filtered to obtain the purified oxazepam product. The purity of the obtained oxazepam product is not less than 99.95%, and the content of the impurity 6-chloro-4-phenylquinoline-2-carboxaldehyde in the product does not exceed 0.02%. The method of this invention significantly reduces the amount and consumption of refining solvents, greatly increases the capacity of refining equipment, reduces preparation costs, and achieves a refining yield of over 90%, which is more than 20 percentage points higher than the yield of the prior art (70%).

The application discloses a material concentration system and method based on a vortex tube and a VMD system, and the system comprises a vortex tube, a first heat exchanger, a second heat exchanger and a VMD system. High-pressure natural gas inflow enters the vortex tube to generate hot-end flow and cold-end flow, and provides heat source and cold source for the first heat exchanger and the second heat exchanger respectively. After being preheated by the first heat exchanger, the material to be concentrated enters a material liquid side of the VMD system, under the action of the transmembrane steam pressure difference formed by negative pressure, water vaporizes and penetrates the membrane to enter the cold side, is condensed into liquid water by the second heat exchanger and is discharged by a drainage pump, and the material liquid side obtains concentrated material. After heat exchange, the cold and hot end natural gas is supplied to a downstream pipe network after being converged and stabilized by an ejector, the application fully utilizes the natural gas station residual pressure for heating and refrigeration, provides operation driving force for the VMD system, simultaneously completes natural gas pressure regulation and material low-temperature concentration, and is suitable for industrial wastewater, food, medicine, chemical industry and other material concentration and natural gas station energy-saving reconstruction.

This application relates to a high-yield engineered bacteria for polyglutamic acid esters, its construction method, and its application, belonging to the field of genetic engineering technology. The proposed method utilizes an engineered bacteria for bio-fermentation and an "integrated cell factory" biosynthesis technology to achieve efficient and directional assembly of high-molecular-weight polyglutamic acid esters. The engineered bacteria provided in this application are suitable for continuous industrial bio-fermentation production of polyglutamic acid esters, and the prepared polyglutamic acid esters exhibit a narrower molecular weight distribution and better product uniformity.

This application relates to the field of carbon capture wastewater treatment technology, and in particular to a multi-stage purification method and system for absorbents in carbon capture wastewater. The method includes: performing wastewater pretreatment, multi-stage filtration, primary deweighting, distillation purification, and final deep purification steps; the system includes a pretreatment unit, a multi-stage filtration unit, a deweighting unit, a distillation unit, a deep purification unit, and a control unit. This application removes degradation products through the synergistic effect of chemical conditioning and physical filtration, achieves thorough separation of effective components through primary deweighting and distillation fractionation, and combines a vacuum environment to reduce operating temperature and slow down secondary degradation. This application can solve the problem that a single method cannot simultaneously achieve product purity and recovery rate, significantly improves the purity of the regenerated absorbent, realizes efficient resource regeneration of wastewater, reduces system energy consumption and operating costs, and has significant economic and environmental value.

This invention belongs to the field of acyclic compound technology, specifically relating to a method for preparing tert-butyl peroxide. An alkaline solution is added to acetic anhydride, and the mixture is stirred to obtain a reaction solution. A composite catalyst is added to a purified tert-butyl hydrogen peroxide solution, and the mixture is stirred to obtain a mixture. The reaction solution is added to the mixture, and the mixture is stirred to obtain an organic phase. The organic phase is acid-washed to obtain an oil phase. The oil phase is then alkali-washed, salt-washed, and freeze-dried to obtain tert-butyl peroxide. This invention purifies the tert-butyl hydrogen peroxide solution, effectively removing di-tert-butyl peroxide impurities. A composite catalyst composed of p-toluenesulfonic acid, perfluorosulfonic acid resin, and sulfonated carbon is used as the catalyst, reducing the destructive effect on the product tert-butyl peroxide and significantly improving the yield of tert-butyl peroxide, thus possessing industrial production significance.