22results about How to "Increase ion concentration" patented technology

The invention discloses infant formula milk powder with high-activity immune protein and a preparation method of the infant formula milk powder, and belongs to the technical field of preparation of dairy products. The preparation method comprises the following steps: degreasing and degerming fresh milk, transferring lactoferrin phase combination, enriching lactoferrin to a whey phase through filtration of a microfiltration membrane, further desalting and concentrating the whey phase through ultrafiltration and electrodialysis, and forming active whey rich in lactoferrin after sterile concentration; the trapped fluid filtered by the microfiltration membrane is subjected to milk killing (primary sterilization), then is blended with other nutrients, is homogenized, is subjected to material killing (secondary sterilization) and is concentrated, and finally, the treated trapped fluid and the active whey which is subjected to sterile concentration and is rich in lactoferrin are mixed on line and then are subjected to evaporation concentration and spray drying; the infant formula milk powder rich in active whey protein with high lactoferrin content is obtained.

The invention discloses an alkali metal salt additive for solving the problem of electrolyte migration in an alkaline zinc-iron flow battery. The ion concentration and the ion strength of the negative electrode electrolyte can be improved, and the number and the size of water molecule clusters in the electrolyte are reduced, so that the problem of electrolyte migration in the battery circulation process is relieved, the cycle life of the battery is remarkably prolonged, and the electrolyte maintenance cost of the battery in the actual use process is greatly reduced.

The invention discloses a semiconductor discharge tube, a manufacturing method thereof and an overvoltage protection device. The semiconductor discharge tube comprises two doping structures and a substrate with a first conduction type, the first side of the substrate and the second side of the substrate are respectively provided with a doping structure; wherein the first side of the substrate is opposite to the second side of the substrate; the doped structure comprises a first doped region with a second conductive type, a second doped region with the second conductive type and at least one third doped region with the first conductive type; the second doped region is located in the first doped region, and the concentration of doped ions in the second doped region is far greater than the concentration of doped ions in the first doped region; the third doped region is located in the second doped region. According to the semiconductor discharge tube, the manufacturing method thereof and the overvoltage protection device, the voltage resistance of the semiconductor discharge tube can be improved, and the voltage locking range of the semiconductor discharge tube can be expanded.

The invention provides application of high-molecular-weight cationic polyacrylamide in a titaniferous solution sedimentation process in a sulfuric acid method titanium dioxide process. The number-average molecular weight of the high-molecular-weight cationic polyacrylamide is greater than or equal to 10,000,000. The invention further provides a flocculating settling method for improving the titanium liquid settling effect in the sulfuric acid method titanium dioxide process. According to the method, cationic polyacrylamide is applied to the titanium dioxide titanium liquid sedimentation procedure through the sulfuric acid method, the preparation time of a flocculating agent can be shortened by more than half compared with that in the prior art, in the flocculation process, the concentration of dissociated ions is higher due to the high cationic degree, the adsorption effect on charges is higher, and the flocculation efficiency is improved. Particularly, the adsorbent has a relatively strong adsorption effect on a silicic acid component contained in the titanium liquid, so that the flocculating settling process is performed more quickly and thoroughly. By adopting the emulsion type high-ionic-degree high-molecular-weight cationic polyacrylamide, compared with the traditional flocculant product, the flocculating settling effect of the sulfate process titanium dioxide titanium liquid can be effectively improved, and the production cost is comprehensively reduced.

The present invention relates to the field of separation, analysis and detection technology, and specifically to a method for quickly detecting lactic acid in liquor Daqu and fermented grains using an ion mobility spectrometer. The ion mobility spectrometer comprises an ion mobility tube, which comprises an ionization zone and a drift zone. The ionization zone comprises a photoionization source, a vacuum pump interface, a chemical dopant interface, and an injection interface. A drift gas inlet is provided at the tail of the ion mobility tube. The vacuum pump interface, the chemical dopant interface, and the injection interface are sequentially arranged in a vertical direction of the central axis of the ion mobility tube, and the injection interface is connected to an injection device. The ion mobility spectrometer is used for detection in negative ion mode, and the sample is extracted with isopropanol as an extractant to achieve high-sensitivity detection of lactic acid. The method of the present invention has simple sample pretreatment, saves time, does not require filtering operation, and will not contaminate the detector or block the separation column. The sample is extracted with isopropanol, which can not only regulate the air reagent ion peak, but also solve the corrosion effect of lactic acid on the entire system material.

The invention discloses a compound water retention agent, white water pig tripe and a preparation method of the white water pig tripe, and belongs to the technical field of food processing. The compound water retention agent is prepared from the following components in parts by mass or consists of the following components in parts by mass: 22 to 24 parts of trisodium phosphate, 19 to 21 parts of sodium pyrophosphate, 12 to 14 parts of sodium tripolyphosphate, 9 to 11 parts of sodium bicarbonate, 8 to 10 parts of sodium carbonate, 5 to 7 parts of sodium citrate, 3 to 5 parts of glycine, 1 to 2 parts of citric acid and 14 to 16 parts of trehalose. Compared with the prior art, the compound water retention agent provided by the invention can improve the taste of meat products, can retain water and increase weight, and does not generate peculiar smell.

The invention discloses an application of an anti-corrosion and anti-seepage agent in a phosphate radical and fluorine ion environment, which is characterized in that the anti-corrosion and anti-seepage agent is added into concrete according to 0.5-3% of a cementing material to prepare a required structure for resisting corrosion of phosphate radicals and fluorine ions. A concrete test piece added with the anti-corrosion and anti-seepage agent is in a phosphorus-fluorine acid environment for a long time, the compressive strength of the concrete test piece is still in an enhanced trend, the addition of the anti-corrosion and anti-seepage agent has the effect of resisting corrosion of phosphate radical and fluorine ion environment acid wastewater, and a concrete structure can still be very stable even in a strong acid environment; the high efficiency can provide a feasible solution for prolonging the service life of highly acidic environment structures such as ardealite storehouses and the like.

The invention discloses a high-yield and high-purity Cs2AgBiBr6 polycrystalline powder room temperature preparation method, which comprises: mixing CsBr powder, AgBr powder and BiBr3 powder, adding DMSO and an anti-solvent, carrying out a room temperature stirring reaction, and after the reaction is finished, carrying out cleaning purification and heating drying on the reaction product to obtain the Cs2AgBiBr6 polycrystalline powder. The Cs2AgBiBr6 polycrystalline powder with the purity close to 100% and the yield reaching 92% is prepared through a simple process under the room temperature condition, a source material is provided for thermal evaporation, sputtering and pulsed laser deposition of a high-quality Cs2AgBiBr6 film, and application of Cs2AgBiBr6 in the aspects of solar cells, photoelectric detection, laser diodes and the like is further promoted.

The invention discloses a suction-type non-contact cleaning device for a PCB board, which relates to the field of PCB board cleaning and comprises a driving mechanism, a grinding mechanism, a cleaning mechanism, a limiting mechanism, a measuring mechanism and a side plate. The driving mechanism is provided with two groups and is installed inside the side plate. The grinding mechanism is installed inside the side plate and is located between the two groups of driving mechanisms. The cleaning mechanism is provided on the right side of the grinding mechanism. The limiting mechanism is installed on the left side of the driving mechanism. The measuring mechanism is provided above the limiting mechanism. Multiple groups of grinding units are provided in the grinding mechanism to grind the PCB board. A cleaning brush is provided to further clean uneven places. The blowing port of the cleaning air knife blows out a high-speed airflow to blow up debris, and the suction port generates a negative pressure to suck in the debris and discharge it to the outside, thereby reducing contact with the PCB board while cleaning. The ion wind rod blows out an ion flow to neutralize the charge on the PCB board and the cleaning brush, reduce the adsorption of debris, and improve the cleaning effect.

The application provides a carbon nanodot-based temperature sensor and a preparation method thereof. The carbon nanodot-based temperature sensor comprises, from bottom to top, a substrate layer, an interdigital electrode layer and a sensing layer. The sensing layer comprises hydrophilic carbon nanodot particles and an ionic salt. The sensing layer is formed by drop coating of a mixed aqueous solution of the hydrophilic carbon nanodot particles and the ionic salt. The preparation method is simple and easy to implement, and has low cost. The prepared temperature sensor has high sensitivity, high precision and high stability. The sensitivity of the temperature sensor reaches 345951.8%℃ ‑1 .

The invention discloses a method for reducing impurity fluorine in phosphogypsum. For the byproduct phosphogypsum obtained in the industrial phosphoric acid preparation process, the phosphogypsum is first mixed with quicklime to form a slurry to precipitate soluble fluorine and adjust the pH, and then straw, livestock manure and a modifier are used to prepare modified carbon powder by calcination, and the modified carbon powder is added to the phosphogypsum slurry, mixed evenly and aged, so that the modified carbon powder fully absorbs the impurity fluorine in the phosphogypsum, and finally the upper clear liquid is removed to obtain a phosphogypsum sample treated with fluorine reduction. The modified carbon powder prepared by the invention has strong adsorption performance, can effectively reduce the impurity fluorine content in the phosphogypsum, and has certain significance in realizing the harmlessness of phosphogypsum resources and promoting the recycling and reuse of phosphogypsum resources.

The invention provides a copper-based molecular sieve catalyst, a preparation method thereof and application of the copper-based molecular sieve catalyst in selective reduction of NOx, and belongs to the technical field of molecular sieves. Cu ion active sites on the surface of the catalyst can be regulated and optimized by adjusting the proportion of a precursor guiding agent Na < + > / TMADa < + > in the preparation process of the SSZ-13 molecular sieve and the Cu loading capacity in the preparation process of the Cu / SSZ-13 catalyst, so that the NH3-SCR copper-based molecular sieve catalyst capable of highly selectively reducing NOx is prepared; and the generation of N2O in the tail gas of the diesel engine can be effectively inhibited while the high NOx conversion rate is maintained.

This utility model provides an electrolytic generator and hot water equipment for supplementing minerals. The electrolytic generator includes a shell, a mineral filter element, and an electrode module. The shell is connected to an inlet pipe and an outlet pipe. The electrode module is connected to the shell. The mineral filter element is disposed in the shell and includes a cover plate and a filter element body. The cover plate and the filter element body are detachably connected. The filter element body contains minerals and is connected to the shell. The detachable connection between the cover plate and the filter element body allows for adjustment of the type and quantity of minerals and facilitates replacement of minerals. While supplementing the mineral element content of the water, it also increases the ion concentration of the water. Electrolysis of the incoming water increases the hydrogen and oxygen content of the water.

The utility model discloses an efficient regeneration device for a tributyl phosphate extracting agent, which comprises an alkali liquor preparation tank, a regeneration alkali washing tank, a regeneration carbon washing tank, a regeneration filter press, a regeneration phase splitting tank and a regeneration water washing tower which are sequentially connected through pipelines, and stirring mechanisms are arranged in the alkali liquor preparation tank, the regeneration alkali washing tank and the regeneration carbon washing tank. The regeneration alkaline washing tank is connected with a tributyl phosphate inlet pipe, the top of the regeneration phase splitting tank is connected with the bottom of the regeneration water washing tower, the top of the regeneration water washing tower is connected with a desalted water inlet pipe, and the top and the bottom of the regeneration water washing tower are respectively connected with an extraction agent outlet pipe and a dilute waste alkali liquid outlet pipe. The effect of improving the regeneration efficiency and the regeneration quality of the tributyl phosphate extraction agent is achieved.

This invention discloses a method and apparatus for extracting tellurium from tellurium-containing materials, comprising the steps of: mixing a sulfur-containing leaching agent with the tellurium-containing material to obtain a mixed slurry; subjecting the mixed slurry to cyclone electrolysis to obtain an anodic precipitate and a cathode product; and purifying the cathode product to obtain cathode tellurium. This invention combines selective leaching and electrowinning recovery of metallic tellurium into a single process, and utilizes the synergistic oxidation of anodic electro-oxidation and oxygen generation during electrolysis to destroy the difficult-to-leach elemental and alloy components in the tellurium-containing material, achieving one-step selective and efficient separation of tellurium-containing materials and preparation of high-purity tellurium products. By employing cyclone electrolysis to prepare cathode tellurium, this invention avoids the adverse effects of slow solution flow leading to reduced current efficiency and increased concentration polarization in traditional tellurium electrolysis, shortens the tellurium electrolysis cycle, and reduces the required concentration of impurity elements in the electrolyte, offering advantages such as high selectivity, high current density, and high product purity.

The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.

The invention relates to the technical field of lithium ion battery positive electrode materials, in particular to a treatment method of iron phosphate production wastewater. Comprising the following steps: S1, adding zirconium industry waste alkali liquor into iron phosphate production wastewater to adjust the pH value to 10.6-11.5, carrying out solid-liquid separation after reaction, and removing precipitate to obtain a solution A; s2, adding carbonate into the solution A, carrying out solid-liquid separation after reaction, and removing precipitate to obtain a solution B; s3, recycling the solution B into crude phosphoric acid for producing iron phosphate; and / or performing membrane treatment on the solution B. The waste alkali liquor in the zirconium industry is used for pretreatment of the iron phosphate production wastewater, so that the pretreatment cost can be reduced, the phosphate radical retention rate in the pretreated wastewater is relatively high, the pretreated wastewater can be directly reused in crude phosphoric acid, and the phosphorus loss is reduced; and meanwhile, the hardness of iron phosphate can be effectively reduced, and the risk of scaling and membrane blocking can be remarkably reduced during later-section membrane treatment.

The invention provides a high-molecular conductive agent and a preparation method and application thereof, and belongs to the technical field of fine chemical assistants. Heptamethyltrisiloxane is firstly used for graft modification of oil-based dimethyl tertiary amine, and then the high-molecular conductive agent is synthesized with compounded monochloroalkane and maleic anhydride. The polymer conductive agent prepared by the invention has excellent storage stability, is not easy to freeze in winter and has strong conductivity, and the conductivity of the polymer conductive agent in a coating film can be kept for a long time. The polymer conductive agent has good compatibility with various resins, does not influence the transparency of a paint film, has small influence on the performance of the paint film, and does not rust the tank.

The invention discloses a method for regulating and controlling the migration rate of water in an alkaline zinc-iron flow battery. By selecting the alkali metal salt additives with different hydrophilic and hydrophobic characteristics (judged according to the size of free energy change combined with water molecules) of anions, the number and size of water molecule clusters in the negative electrode electrolyte can be regulated and controlled, so that the water migration rate in the battery circulation process is regulated. Meanwhile, a related prediction calculation model is provided, and the incidence relation between the free energy change of combination of anions and water molecules and the water migration rate of the zinc-iron flow battery is established. The alkali metal salt additive with the high-hydrophobicity anions can remarkably reduce the migration rate of the electrolyte, so that the cycle life of the battery is prolonged, and the maintenance cost of the electrolyte in the actual use process of the battery is greatly reduced.

The invention discloses a method for efficiently separating and recovering lithium elements from waste lithium iron phosphate, and belongs to the technical field of battery recovery. The invention first obtains waste lithium iron phosphate powder from waste lithium iron phosphate batteries, and then accurately calculates the optimal pH value of the reaction system at the real-time temperature according to the leaching reaction temperature and related thermodynamic data, and introduces a low-concentration phosphate solution into the leaching reaction and adjusts the pH value of the system to the optimum, thereby ensuring that most of the iron ions can be effectively precipitated in the form of iron phosphate during the reaction process, thereby achieving efficient separation of lithium and iron elements, and finally adjusting the pH value of the filtrate and adding a saturated phosphate solution to recover high-purity lithium phosphate. The invention can accurately calculate the optimal pH value corresponding to different reaction temperatures according to the reaction temperature and related thermodynamic data, thereby saving a large amount of early exploration experimental cost and time, improving the overall production efficiency, and enhancing the universality of the process.

The present invention relates to a jet-and-flushing mixed liquid supply electroforming system and a high aspect ratio metal microstructure electroforming method, belonging to the field of precision device processing technology. It is characterized in that the problem of poor mass transfer in the high aspect ratio structure micro electroforming process is solved by applying a jet-and-flushing mixed flow stirring mode during the electroforming process. The liquid inlet of the jet-and-flushing mixed liquid supply is composed of a liquid spray port with a specific tilt angle and a horizontal liquid spray port. The liquid spray port with a specific tilt angle is conducive to increasing the solution renewal speed inside the high aspect ratio microstructure during the electroforming process, increasing the ion concentration inside the microstructure, thereby improving the problem of poor mass transfer in the electroforming process. The horizontal liquid spray port is conducive to balancing the flow rate inside the high aspect ratio microstructure, and improving the mass transfer imbalance inside different microstructures during the electroforming process.

The utility model provides an SCR device used for ESD protection and an electrostatic protection circuit, the SCR device comprises an SCR structure, a BJT transistor structure triggered by NPN and a GGNMOS transistor structure triggered by PNP, so that the SCR device is provided with an SCR current discharge path, a BJT current discharge path and a GGNMOS current discharge path, the trigger voltage Vt of the SCR device is reduced, and the ESD protection circuit is used for ESD protection. The maintaining voltage Vh of the SCR device is improved to avoid the latch-up effect, and the ESD robustness of the SCR device is enhanced to resist the impact of ESD pulses.