268 results about "Dissolution reaction" patented technology

The invention relates to the technical field of fiber product treatment, and discloses a low-energy-consumption rapid chemical separation method for polyester cotton fiber products. The method comprises the following steps: mixing and dissolving a hydrogen bond donor and a hydrogen bond acceptor to prepare a betaine-based eutectic solvent, and mixing the betaine-based eutectic solvent with alkali liquor to obtain a eutectic solvent / alkali composite system; immersing the polyester-cotton product in the deep eutectic solvent / alkali composite system for dissolution reaction, filtering after the reaction is finished, taking undissolved components in the polyester-cotton product, washing with water, and drying; according to the method, a betaine-based eutectic solvent / alkali composite system is adopted, polyester fiber components are dissolved in a mild condition within a short time, meanwhile, cotton fiber components are not damaged, the method has the advantages of being low in cost, environmentally friendly and the like, and rapid quantitative analysis of the polyester and cotton fiber components is achieved.

The invention discloses an electrolyte for an aqueous manganese-based battery. The electrolyte comprises an electrolyte, and the electrolyte comprises a manganese salt; the weak acid is used for regulating and controlling proton dynamic release of the positive electrode / electrolyte interface to realize on-demand supply of protons of the positive electrode / electrolyte interface; and a solvent, wherein the solvent is deionized water; the PH range of the electrolyte is 2.0-3.5, and the electrolyte can realize on-demand supply of protons of a positive electrode / electrolyte interface in the charging and discharging process of the aqueous manganese-based battery, and promotes efficient and reversible deposition and dissolution reaction of a positive active substance manganese dioxide. According to the invention, the proton on-demand supply electrolyte is constructed by utilizing dynamic dissociation equilibrium of weak acid, so that on-demand supply of protons in the MnO2 dissolving process is realized, complete electrochemical dissolution of MnO2 is promoted, and generation of'dead manganese 'is inhibited, so that the cycling stability of the battery and the utilization efficiency of active substances are remarkably improved. The invention also discloses an aqueous manganese-based battery for realizing on-demand supply of protons and application of the aqueous manganese-based battery in the field of secondary energy storage.

The invention provides a solid-liquid full-utilization short-process vanadium battery electrolyte production process, which comprises the following steps: mixing high-purity vanadium, sulfuric acid and a cosolvent in an activation reaction tank, activating at high temperature, and cooling; enabling the mixed solution subjected to high-temperature activation to enter a jacketed cooling tank, cooling, enabling the cooled mixed solution to enter a dissolution reaction tank, injecting desalted water into the dissolution reaction tank, dissolving the desalted water, the V < 5 + > mixed solution and a secondary dissolution solution from a filter residue dissolution tank, and filtering to obtain a pentavalent vanadium electrolyte; the vanadium electrolyte is added to the cathode side of the diaphragm electrolytic tank, a sulfuric acid solution is added to the anode side of the diaphragm electrolytic tank, electrolytic reduction is carried out under the constant current condition, the electrolyte subjected to secondary valence adjustment is a finished electrolyte, and the finished electrolyte enters a filling procedure for finished product filling; first filter residues generated by the filter and second filter residues generated by the sludge dewatering machine are subjected to reduction dissolution in the filter residue dissolution tank through trivalent vanadium electrolyte refluxed by the liquid outlet tank, and secondary dissolution liquid obtained after dissolution enters the dissolution reaction tank, so that closed circulation with full solid-liquid utilization is formed.

The invention provides a hydrated compound and a preparation method thereof, and relates to the technical field of compound preparation. The hydrated compound is rupatinifen fumarate monohydrate and has a crystal structure. The preparation method of the hydrated compound comprises the following steps: adding rupatinifen fumarate into a reaction solvent at least containing a first organic solvent, heating, stirring and refluxing until the rupatinifen fumarate is completely dissolved, the concentration of the rupatinifen fumarate in a reaction system is not lower than 70% of the concentration of a saturated solution of the rupatinifen fumarate in the reaction system, and carrying out solid-liquid separation to obtain the hydrated compound. And continuously refluxing for 1 min to 24 h, cooling to the temperature not exceeding 8 DEG C, crystallizing, collecting crystals, washing and drying to obtain the product.

The invention discloses a phosphogypsum leachate-carbonate rock dynamic corrosion reaction analysis method based on numerical simulation, and aims to research a migration-corrosion coupling mechanism of acid leachate in a carbonate rock fracture network. The method comprises the following steps: firstly, acquiring a two-dimensional image sequence of a rock core sample through CT (Computed Tomography) scanning, carrying out operations such as threshold segmentation, membrane enhancement and a light shading algorithm on an image by utilizing AVIZO software, extracting fracture structure parameters and establishing a high-precision three-dimensional model; then, multiple groups of simplified models with different fracture widths are constructed in COMSOL Multiphysics, a Darcy flow field and a solute concentration field are coupled on the basis of the Darcy law and a dilute matter transfer theory, and the dynamic corrosion effect under the multi-field coupling effect is quantitatively represented by setting hydraulic gradient boundary conditions and chemical reaction kinetic parameters; the dynamic corrosion reaction process of calcium ions, hydrofluoric acid, sulfuric acid and phosphoric acid in the ardealite leachate and carbonate rocks with different crack widths is accurately simulated.

The utility model belongs to the field of water treatment, and particularly relates to a mineralization treatment tank. The mineralization treatment pond comprises a water inlet distribution channel, an upward flow dissolving pond, a downward flow sand filtering pond, a central channel, a communication channel, a feeding port and a pipe gallery. And the inlet water distribution channel distributes inlet water to each grid of treatment pond by adopting weir flow. And a dissolution reaction of mineralized filler occurs in the upward flow dissolving tank, so that the alkalinity, hardness and nutrient ions of desalted water are increased. The downward quicksand filter guarantees the stability of the effluent turbidity, and particularly eliminates the influence of the increase of the effluent turbidity of the mineralization dissolving tank when the mineralization filler is supplemented. The central channel is divided into three layers, the bottom-layer distribution channel is a water inlet and backwashing gas and water distribution channel of the dissolving tank, the middle-layer distribution channel is a water outlet and backwashing gas and water distribution channel of the sand filter tank, and the upper-layer distribution channel is a multifunctional central channel. And the multifunctional central channel is communicated with the dissolving tank communicating channel and the sand filter water collecting tank. The device can be popularized and applied to remineralization and restabilization of various desalted water.

A method for preparing 1-(4-chlorphenyl)-3-pyrazole alcohol through air oxidation is characterized in that a eutectic solvent is adopted as a solvent and a catalyst, air oxidation reaction of 1-(4-chlorphenyl) pyrazolidine-3-ketone is dissolved and catalyzed to prepare the 1-(4-chlorphenyl)-3-pyrazole alcohol, the mass ratio of the 1-(4-chlorphenyl) pyrazolidine-3-ketone to the eutectic solvent is (1: 20)-(1: 10), and the mass ratio of the 1-(4-chlorphenyl) pyrazolidine-3-ketone to the eutectic solvent is (1: 20)-(1: 10). The method comprises the following steps of: reacting 1-(4-chlorphenyl)-3-pyrazole alcohol for 3-6 hours at the air flow velocity of 10-40L / min at the reaction temperature of 40-70 DEG C, after the reaction is finished, extracting the product 1-(4-chlorphenyl)-3-pyrazole alcohol for three times by using an extracting agent with the same volume as a reaction mixture, combining extracting solutions, and recovering the extracting agent through reduced pressure distillation to obtain the product 1-(4-chlorphenyl)-3-pyrazole alcohol, the yield is 98.2-99.4%, the purity is 98.7-99.5%, the raffinate is a eutectic solvent, and the method is suitable for industrial production. The direct recycling can be realized. The method has the characteristics of mild reaction conditions, simplicity and convenience in operation and high product yield; the eutectic solvent has dual functions of a solvent and a catalyst, can dissolve reaction raw materials and can provide a catalytic active center for the reaction, and the reaction efficiency is improved through the synergistic effect of the solvent and the catalyst; the eutectic solvent is easy to separate from the product, and the active center is not lost and can be repeatedly used.

The invention relates to the technical field of machine vision, and particularly discloses a milk powder particle uniformity intelligent detection method and device based on machine vision, and the method comprises the steps: collecting a multi-modal image of a to-be-detected milk powder sample, extracting basic characteristic data of the to-be-detected milk powder sample, carrying out particle segmentation and adhesion analysis, and obtaining an adhesion signal of the to-be-detected milk powder sample; the method comprises the following steps: constructing a milk powder particle uniformity analysis model, determining an initial grade of milk powder particle uniformity, obtaining production parameters of a to-be-detected milk powder sample, outputting an updated grade of milk powder particle uniformity, carrying out dissolution reaction detection and thermal reaction detection on the to-be-detected milk powder sample, and outputting a milk powder particle reaction uniformity grade in combination with a BP neural network model. And obtaining a multi-dimensional uniformity evaluation report, and determining a milk powder particle regulation and control instruction. The problems that traditional detection depends on manual operation, efficiency is low, subjectivity is high, errors are large, and the requirements of modern production lines for high precision and high efficiency of milk powder quality control are difficult to meet are solved.

The utility model discloses a slaked lime powder on-line feeding and efficient magnesium removal and desulfurization reaction device which comprises a dissolution reaction tank, a slaked lime feeding assembly, a reaction flocculation tank, an overflow pipe, a liquid level meter and a frequency conversion material transfer pump. A water inlet pipe and a powder feeding opening are formed in the top of the dissolving reaction tank; the slaked lime adding assembly is used for adding slaked lime powder into the dissolving reaction tank; the reaction flocculation tank is communicated with the dissolution reaction tank through an overflow port, a feed liquid discharge port is formed in the bottom, and a flocculant filling port and a coagulant aid filling port are formed in the top; the bottom of the overflow pipe extends below the liquid level of the dissolving reaction tank, the top of the overflow pipe is communicated with the overflow port, and the liquidometer is used for monitoring the liquid level value of the reaction flocculation tank in real time; and the variable-frequency transfer pump is used for performing variable-frequency adjustment according to the liquid level value monitored by the liquid level meter. According to the utility model, the problem that only low-concentration magnesium ions, sulfate ions and desulfurization wastewater of suspended matters can be treated by the existing triple box treatment process is solved, and the automation degree is improved.

The invention provides a method for extracting fulvic acid from peat soil, and belongs to the technical field of separation and purification. The method comprises the following steps: firstly, pretreating a peat soil sample, and then sequentially carrying out acidolysis reaction, ultrasonic-assisted extraction, alkali dissolution reaction, high-speed refrigerated centrifugal treatment, activated carbon enrichment treatment, filtration and precipitation, centrifugal separation and washing, drying, grinding, purification and the like. Through ordered cooperation of all the steps, the peat soil structure can be effectively destroyed, fulvic acid is promoted to be fully dissolved out, separated and purified, and the extraction rate and purity of fulvic acid are improved. The method has the advantages that the operation process is closely linked, high efficiency and practicability are achieved, a reliable technical scheme is provided for fulvic acid extraction, and the method has positive significance in related application fields.

The invention discloses an efficient preparation process of cryolite, and relates to the field of cryolite preparation. The process comprises the following steps: S1, taking carbon residues ground by a ball mill, and putting the carbon residues into a dissolution reaction kettle filled with alkali liquor for reaction; s2, after the reaction in the reaction kettle is finished, filter pressing is performed through a plate-and-frame filter press, and coarse carbon powder and filtrate are obtained; s3, pumping the filtrate into a carbon reaction kettle, and introducing carbon dioxide for reaction; s4, after the reaction in the carbon component reaction kettle is finished, carrying out filter pressing through a plate-and-frame filter press; and S5, drying the solid material obtained by filter pressing in a calcining furnace to obtain cryolite. In the process, the industrial waste carbon residue is used as a raw material, and participates in a series of reactions to prepare the cryolite after being subjected to ball-milling refining treatment, so that resource recycling of the waste is realized. The method not only effectively reduces the pollution of the carbon residue to the environment, reduces the accumulation amount of solid wastes, but also reduces the exploitation of natural cryolite minerals, and protects non-renewable resources.

The invention provides a method for preparing a nearly 3.5-valent vanadium electrolyte by reducing ammonium metavanadate with coke oven gas, which comprises the following steps: (1) reducing and calcining ammonium metavanadate in coke oven gas to obtain a reduced product; (2) carrying out replacement deamination on the reduced product in the step (1) to obtain a nearly 3.5-valent vanadium oxide, wherein the nearly 3.5-valent vanadium oxide contains V4O7; and (3) a mixed sulfuric acid solution and the approximately 3.5-valent vanadium oxide are subjected to a dissolution reaction, and the approximately 3.5-valent vanadium electrolyte is obtained. The process method disclosed by the invention is simple and easy to implement, the approximately 3.5 valence vanadyl sulfate electrolyte product with high vanadium concentration and low ammonia content can be obtained by taking the ammonium metavanadate and the coke oven gas as raw materials, and the application prospect is wide.

To provide a battery that is lightweight and yet capable of achieving good coulombic efficiency.SOLUTION: A battery according to the present disclosure that utilizes a deposition and dissolution reaction of metallic lithium as a negative electrode reaction includes a positive electrode having a positive electrode current collector and a positive electrode active material layer, a negative electrode having at least a negative electrode current collector, and an electrolyte layer disposed between the positive electrode and the negative electrode, the negative electrode current collector is a resin current collector, and the negative electrode has a first metal layer containing at least one of Mg and Ag between the negative electrode current collector and the electrolyte layer.SELECTED DRAWING: Figure 1

The utility model relates to a pipeline dissolution reaction device which comprises a slurry preheater, a dead steam preheater, a heater, a reactor and a flash evaporator. Except the slurry preheater, the number of the flash evaporators is consistent with that of the dead steam preheater, a discharge port of the reactor is connected with a feed port of the most upstream flash evaporator, a dead steam outlet of each stage of flash evaporator is connected with a steam inlet of the corresponding dead steam preheater, and a condensate water outlet of each dead steam preheater is connected with an inner cavity of the same stage of flash evaporator. According to the utility model, the problems of scabbing and blockage caused by the fact that the concentration of the slurry is increased to exceed the solubility of a medium after flash evaporation are solved.

The utility model discloses a dissolution reaction kettle convenient to clean filter residue, and relates to the technical field of reaction kettle cleaning, the dissolution reaction kettle comprises a support frame, the inner side of the support frame is fixedly connected with a reaction kettle body, and the top of the reaction kettle body penetrates through and is fixedly connected with a feeding pipe; the bottom of the reaction kettle body penetrates through and is fixedly connected with a discharging pipe, the top of the reaction kettle body is fixedly provided with a top cover, the bottom of the top cover is provided with an up-down rotating cleaning mechanism, and the reaction kettle body is internally provided with a vibration mechanism. Therefore, when the motor is started to drive the rotating shaft to rotate, the sliding barrel and the cleaning brush are driven to rotate through the sliding barrel, the disc, the rotating gear, the hydraulic bin and other assemblies and repeatedly move up and down at the same time, and the inner wall of the reaction kettle body is completely cleaned through rotation and repeated up and down movement of the cleaning brush.

The invention belongs to the field of light modulators, and provides an electrochromic device based on reversible double electrodeposition and application of the electrochromic device. The electrochromic device sequentially comprises a first transparent substrate, a first conductive layer, an electrolyte layer, a second conductive layer and a second transparent substrate; the electrolyte layer comprises a solvent and an electrolyte additive, and the electrolyte additive comprises a manganese salt, a zinc salt and a redox medium. And the charge change in the manganese ion deposition / dissolution process is compensated through the reversible deposition / dissolution reaction of zinc ions in the electrolyte. In the coloring process, manganese ions are subjected to oxidation reaction on the surface of the first transparent conductive substrate to form manganese dioxide sediment; meanwhile, the zinc ions are subjected to reduction reaction on the surface of the second transparent conductive substrate to form metal zinc. And in the fading process, the sediment is dissolved, so that the device is recovered to the initial transparent state. In addition, dissolution of manganese dioxide and metal zinc can be accelerated by adding the oxidation-reduction medium, and the reaction kinetics of the device is improved.

The embodiment of the application provides a chemical equilibrium simulation method for soil salt ions, comprising: acquiring multiple ion data of parameters associated with a chemical equilibrium simulation process of salt ions and constructing a chemical reaction parameter database; and calculating ion activity and constructing a chemical solving model, wherein the chemical solving model comprises a precipitation-dissolution reaction simulation model and a complexation reaction-cation exchange simulation model, one chemical solving is completed by sequentially solving the precipitation-dissolution reaction simulation model and the complexation reaction-cation exchange simulation model; setting initial conditions and termination conditions of iterative operation of the chemical solving model, inputting parameter data into solving, taking a concentration difference of multiple ions after adjacent two chemical solvings as an external loop control standard epsilon, judging whether to enter next chemical solving iteration or outputting a simulation result to obtain a precipitated chemical component content, a complexed chemical component content and an exchanged chemical component content of the salt ions in the soil.

The invention relates to the technical field of red mud waste recycling, in particular to an improved red mud recycling method. The method comprises the following steps: carrying out dissolution reaction on red mud, alkali liquor and degassed carbide slag to obtain a dissolved substance; carrying out solid-liquid separation on the dissolved substance to respectively obtain a liquid product and solid waste; the liquid product is used for alumina production circulating mother liquor; the solid waste comprises molten garnet. According to the method, the mass concentration and the weight of the caustic alkali in the alkali liquor and the addition amount of the degassed carbide slag are adjusted according to different iron oxide contents in the red mud, so that sodium resources and aluminum resources in the red mud can be effectively recovered on the premise of fully considering the iron oxide contents in the red mud, and the recovery rates of the sodium resources and the aluminum resources in the red mud are improved; meanwhile, the degassed carbide slag is consumed as much as possible, so that the content of sodium oxide in the final solid waste can be reduced to be within 1%, and a foundation is laid for comprehensive utilization of the solid waste.

The invention provides a method for treating high-arsenic acid wastewater and recycling iron elements through external field strengthened copper slag, and relates to the technical field of heavy metal pollution treatment. The method comprises the following steps: adding copper slag powder into a sulfuric acid solution, carrying out a Fe < 2 + > / Fe < 3 + > dissolution reaction under the action of ultrasonic waves, then adding a catalyst, an oxidant and high-arsenic acidic wastewater into the solution, and carrying out an arsenic precipitation reaction under the action of ultraviolet irradiation and ultrasonic waves to obtain an arsenic-containing precipitate and a filtrate A; introducing oxygen into the filtrate A, and adding ammonia water for hydrolysis reaction to obtain a precipitate and filtrate B; and adding lime milk into the filtrate B, and carrying out deep purification reaction to obtain precipitated sludge and clear water. The arsenic precipitation and iron extraction technology of the external field reinforced copper slag is introduced, operation is easy, the reaction period is short, the arsenic-containing precipitation slag amount is small and stable, the arsenic removal effect is remarkable, the purity of the obtained iron oxyhydroxide precipitate is larger than or equal to 90%, metallurgical solid waste treatment with waste is achieved to the maximum extent, meanwhile, resource utilization of valuable components of the metallurgical solid waste is achieved, and economic benefits are remarkable.

The utility model relates to a kind of anti-rotation device of dissolvable bridge plug, it is related to oilfield downhole tool technical field, upper cap lower part thread sealing connection central tube, central tube lower part thread connection leading shoe, central tube is successively covered with advancing sleeve, rubber cylinder, vertebral body and slip below upper cap, slip falls on leading shoe, vertebral body is connected with slip by dovetail groove guide rail, advancing sleeve, vertebral body and central tube are connected by spline.This utility model has the beneficial effect that when the liquid in wellbore is rich in crude oil and does not meet the condition of dissolution reaction, the bridge plug is drilled by drilling tool, since central tube and advancing sleeve, vertebral body are connected by spline;vertebral body is connected with slip by dovetail groove guide rail, central tube and leading shoe are connected by thread, before slip anchoring is not removed, parts will not rotate each other, drilling tool will effectively drill each part of bridge plug, improve drilling efficiency;Drilling is complete, residual volume is small, can fall into well bottom and dissolve.

The invention provides a method for preparing silicon-aluminum aerogel from fly ash, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: S1, mixing fly ash and a sodium hydroxide aqueous solution according to a mass ratio of 1: 3-1: 8, carrying out an alkali dissolution reaction, and carrying out solid-liquid separation to obtain a silicon-aluminum mixed solution; s2, introducing CO2 into the silicon-aluminum mixed solution until the pH value is 8.0-10.0, so as to obtain a silicon-aluminum mixed colloid; s3, adding a drying control agent into the silicon-aluminum mixed colloid, and then stirring and standing to obtain silicon-aluminum wet gel; the drying control agent is a mixture of formamide and dimethylformamide, and the mass ratio of the formamide to the dimethylformamide is (1: 3)-(1: 10); and S4, carrying out aging, solvent replacement and segmented drying on the silicon-aluminum wet gel to obtain the silicon-aluminum aerogel. The aerogel prepared by the invention has the advantages of high specific surface area, low density, mesoporous structure and low heat-conducting property.

The invention provides a recovery treatment method of fluoride slag in uranium hexafluoride preparation, belongs to the technical field of nuclear industry waste slag treatment, and solves the technical problems that a product obtained by an existing fluoride slag treatment method is high in metal impurity content and low in uranium recovery rate, secondary fluoride slag is easily generated, and the product cannot be returned to a uranium purification and conversion production line for reuse. The method comprises the following steps: at the temperature of 400-600 DEG C, contacting the fluorinated slag with excessive water vapor to carry out high-temperature hydrolysis reaction, so that UF4 and uranium intermediate fluoride in the fluorinated slag generate uranium oxides U3O8 and UO3 with the fluorine ion content of less than 1mg / g, and filtering to obtain uranium oxides; mixing uranium oxide with a nitric acid solution, dissolving and reacting to obtain a uranyl nitrate solution; the pH of the uranyl nitrate solution is adjusted to 3-4, hydrogen peroxide is added for a precipitation reaction, solid-liquid separation is conducted, and uranium peroxide solid precipitates are obtained. The method is high in uranium recovery rate, low in product impurity content and capable of returning to a uranium purification and conversion production line for reuse.

This invention belongs to the field of hydraulic structure analysis technology, specifically disclosing a gravity dam coupling analysis method, system, electronic equipment, and storage medium, including: models describing water flow in concrete, the relationship between water pressure and stress, the dissolution reaction process, and the coupling of ion diffusion with water flow. By acquiring influencing variables, parameters of each model are correlated, and a solubility function considering performance parameters is established and dynamically updated. The solubility function is iteratively trained using experimental data to construct a finite element model, and simulations are performed based on the trained function. Early warnings are generated based on the simulation results to predict the concrete deterioration process and optimize maintenance decisions. It has the following advantages: by coupling multiple models such as water flow, chemical dissolution, and hydraulic fracturing, the long-term deterioration process of concrete under the action of water flow and dissolution is accurately simulated. The introduction of a solubility function and dynamic updating of material parameters, considering time-varying deterioration effects, comprehensively improves the accuracy of deterioration prediction and simulation results.

The invention discloses a method for modifying a vinyl ether macromonomer by utilizing maleated rosin, the obtained modified macromonomer and application. The method comprises the following steps: mixing maleated rosin and a vinyl ether macromonomer according to a certain proportion, putting the mixture into a reaction kettle, stirring and reacting at 60-150 DEG C for 3-12 hours, cooling, adding water, stirring and dissolving a reaction product, filtering to remove insoluble unreacted maleated rosin, concentrating and drying (if the water reducer is directly synthesized, concentrating and drying are not needed) to obtain the product. The modified macromonomer is prepared by a solvent-free direct esterification method, and the method has the advantages of no need of special equipment, cheap and easily available modification raw materials, low production cost, mild reaction conditions, green and environment-friendly process and the like; the esterification rate reaches 97.02%, and the double bond retention rate reaches up to 96.81%. The water reducing agent produced by the modified macromonomer prepared by the method has excellent mud resistance.

The invention discloses a lithium iron phosphate positive electrode material recovery method, which comprises: (1) adding dilute phosphoric acid to positive electrode material powder to prepare a lithium iron phosphate slurry, and carrying out electrolysis extraction to recover the lithium element in the positive electrode material powder so as to obtain an iron phosphate slurry; and (2) adding concentrated sulfuric acid into the iron phosphate slurry obtained in the step (1) to carry out a dissolution reaction, then carrying out solid-liquid separation to obtain a ferric sulfate solution containing phosphoric acid, then adding iron blocks or iron powder to carry out a reaction, and then adjusting the iron-phosphorus ratio and the ferrous ion content of the system to obtain a ferrous solution meeting the requirements of ammonium-process iron phosphate. The recycling method of the lithium iron phosphate positive electrode material is simple in technological process, less in acid and alkali consumption, less in waste liquid and low in cost, valuable elements such as lithium, iron and phosphorus in the lithium iron phosphate positive electrode powder are recycled at low cost and high yield, and the extracted iron and phosphorus elements are presented in a ferrous solution and can be directly grafted with an existing ammonium-process iron phosphate device, so that the recycling method is suitable for industrial production. Good popularization prospects are realized.

The utility model discloses a dissolution reaction kettle for producing a ritonavir intermediate MTV-III, which is characterized in that a kettle cover is arranged on the upper surface of a kettle body, the lower part of a main shaft of a stirrer and a stirring paddle are movably arranged in the kettle body, a mixed liquid feeding hole and a water inlet are formed in the upper surface of the kettle cover, and an outer ring groove and an inner ring groove are formed in the lower surface of the kettle cover; an outer ring cover plate is arranged on the lower surface of the kettle cover and located at the outer ring groove, an inner ring cover plate is arranged on the lower surface of the kettle cover and located at the inner ring groove, the outer ring cover plate is provided with a plurality of discharging ports, and the inner ring cover plate is provided with a plurality of nozzles. On one hand, a mixed solution is evenly discharged through the outer ring groove, water is evenly discharged through the inner ring groove, and compared with installation of a water distributor, space is saved; and on the other hand, water is sprayed out through the nozzles, the outlet pressure is higher, the water can be quickly mixed and contacted with the mixed solution, and the dissolving effect is better.

The invention discloses an ion channel protein near-atomic scale confinement dissolution electrochemical machining method based on a bionic confinement interface. The method is characterized in that a bionic phospholipid bilayer mask is spread on a workpiece anode to shield a non-processing area, ion channel protein is embedded into the bionic phospholipid bilayer mask to serve as an electrolyte channel, and when the bionic phospholipid bilayer mask is powered on, the anode dissolution reaction is strictly limited in the ion channel protein channel. Millivolt-level picosecond-nanosecond pulse voltage or current is adopted on the time scale so that anode metal atoms can be removed one by one, electrolytic products are discharged in the modes of electrolyte adjustment, microcosmic acting force, micro vibration and the like so as to ensure sustainable generation of electrochemical reaction, and therefore near-atomic-scale electrolytic machining is achieved. The electrochemical machining technology and the biological field are fused in an interdisciplinary mode, the near-atomic-scale electrochemical dissolution reaction space is constructed, the capacity of electrochemical machining for removing materials in an ion form is approached, and near-atomic-scale electrochemical machining is achieved.

The application provides a method for preparing 3.5-valence vanadyl sulfate electrolyte by reducing ammonium polyvanadate with a gas, which comprises the following steps: (1) ammonium polyvanadate is reduced and calcined by a reducing gas to obtain vanadium oxide; the vanadium oxide contains V4O7; the reducing gas comprises a mixed gas of NH3, CO and H2; (2) a mixed sulfuric acid solution and the vanadium oxide are subjected to a dissolution reaction, and vanadium adjustment is performed to obtain 3.5-valence vanadyl sulfate electrolyte. The process is simple and easy to implement, 3.5-valence vanadyl sulfate electrolyte product can be obtained from ammonium polyvanadate as raw material, the vanadium concentration is high, and the application prospect is wide.

A method for producing an all solid state battery using a precipitation-dissolution reaction of metallic Li as a reaction of an anode, includes a preparation step, a liquid composition preparation step, a coating layer formation step, and a separator formation step. The preparation step includes preparing a sulfide solid electrolyte represented by Li7-aPS6-aXa (X is at least one of Cl, Br, and I, and a satisfies 0≤a≤2), the liquid composition preparation step includes dissolving the sulfide solid electrolyte in an alcohol-based solvent to prepare a liquid composition, the coating layer formation step includes applying the liquid composition to an anode current collector to form a coating layer, the separator formation step includes forming a separator by volatilizing the alcohol-based solvent from the coating layer by drying, and the ratio of the sulfide solid electrolyte contained in the liquid composition is 10% by weight to 30% by weight.

The invention discloses an all-iron flow battery negative electrode electrolyte as well as a preparation method and application thereof, the negative electrode electrolyte is prepared from the following components: 1.8 to 3.6 mol / L of ferrous chloride, 0.25 to 1.5 mol / L of magnesium chloride, 0.05 to 0.15 mol / L of sodium chloride and the balance of water, and the pH (Potential of Hydrogen) is-1.0 to 0. According to the negative electrode electrolyte of the efficient all-iron flow battery, the extremely low pH of-1.0-0 is adopted, the problems of hydrogen evolution and poor reversibility of a deposition / dissolution reaction existing in a negative electrode of the all-iron flow battery are solved by regulating and controlling magnesium chloride on an inorganic interface in a strong acid environment, and the all-iron flow battery with high coulombic efficiency and long cycle life is obtained.