154results about How to "Improve diffusion efficiency" patented technology

The invention relates to the field of disposable hygienic products, in particular to a paper diaper with a fluffy non-woven fabric core body of a net structure and a preparation process of the paper diaper, and mainly solves the problems that in the prior art, macromolecular water-absorbent resin particles of an online water-absorbent paper core body are difficult to enter fluffy non-woven fabric, and the strength is poor. The paper diaper body comprises a liquid-permeable surface layer, an absorption core layer and a liquid-tight bottom layer which are sequentially stacked from top to bottom; the absorption core layer comprises a first fluffy non-woven fabric, a second fluffy non-woven fabric compounded on the lower surface of the first fluffy non-woven fabric and macromolecular water-absorbent resin particles laid on the upper surface of the first fluffy non-woven fabric; at least two material storage areas are arranged on the first fluffy non-woven fabric side by side in the transverse direction, holes are punched or embossed on the first fluffy non-woven fabric in each material storage area, and the macromolecular water-absorbent resin particles comprise first macromolecular water-absorbent resin particles which are distributed in each material storage area.

The invention belongs to the technical field of lithium ion batteries, and particularly discloses a lithium ion battery positive electrode material, a preparation method thereof and a lithium ion battery. The lithium ion battery positive electrode material comprises a lithium-rich manganese-based positive electrode material and F-doped ferric cobaltate coating at least part of the surface of the lithium-rich manganese-based positive electrode material, the chemical formula of the F-doped ferric cobaltate is FeCo2O4-0. 5xFx, and x is larger than or equal to 0.01 and smaller than or equal to 0.06. According to the lithium ion battery positive electrode material, the lithium-rich manganese-based positive electrode material is coated with FeCo2O4-0. 5xFx, the structural stability of the lithium-rich manganese-based positive electrode material can be effectively improved, the FeCo2O4-0. 5xFx coating layer has a high Fermi level and excellent conductivity, and the ionic conductivity of the lithium-rich manganese-based material can be effectively improved.

The invention provides a method for strengthening the coercive force of a neodymium-iron-boron magnet through composite reduction grain boundary diffusion, which comprises the following steps of: (1) mixing a reducing agent, a dispersing agent and a composite rare earth diffusion source to obtain mixed powder; the composite rare earth diffusion source comprises a multi-element rare earth compound diffusion source and / or a composite compound diffusion source; (2) coating the mixed powder obtained in the step (1) on the surface of a neodymium-iron-boron magnet to obtain a coating layer magnet; and (3) carrying out sectional composite reduction-grain boundary diffusion heat treatment and tempering treatment on the coated magnet in the step (2) to obtain the neodymium iron boron diffusion magnet. According to the method, the composite rare earth diffusion source is adopted, the preparation cost of the neodymium iron boron diffusion magnet is reduced, meanwhile, the grain boundary diffusion efficiency is improved, and the large-scale market application prospect is achieved.

The invention belongs to the field of material processing, and discloses a method for preparing microalloyed AZ31 magnesium alloy by ultrasonic treatment, which comprises the following steps: melting magnesium at 715-725 DEG C, keeping the temperature for 5-8 minutes, then heating to 725-735 DEG C, then adding Mg-50% Al intermediate alloy, after Mg-50% Al is completely melted, keeping the temperature for 8-12 minutes, slagging off, stirring to completely dissolve Mg-50% Al, continuously keeping the temperature at 725-735 DEG C, adding pure zinc, and stirring to obtain the microalloyed AZ31 magnesium alloy. After the pure zinc is completely molten, carrying out heat preservation for 8-12 minutes, then carrying out slagging-off and stirring to completely dissolve the pure zinc, finally adding Mg-30% Ca and Mg-30% Ce intermediate alloys, carrying out heat preservation for 8-12 minutes, and carrying out stirring to completely dissolve the Mg-30% Ca and Mg-30% Ce intermediate alloys to obtain an alloy melt; the alloy melt is cooled to 655-665 DEG C, heat preservation is conducted for 20-25 minutes, then an ultrasonic treatment tool head stretches into the position 18-22 mm below the liquid level of the alloy melt for ultrasonic treatment, the ultrasonic treatment power is 300-700 W, and the treatment time is 60-120 seconds; and casting and molding under a protective atmosphere to obtain a casting blank. According to the method, the problem of slow diffusion in the casting process is solved through ultrasonic treatment, the structure is homogenized, and the strength of the structure is obviously enhanced.

The invention relates to the technical field of adsorbent pressing devices, and discloses a pressing device for an adsorbent in a pressure swing adsorption tower and a using method thereof.The pressing device comprises a main body, the bottom of the main body is fixedly connected with an air inlet pipe, the top of the main body is in bolted connection with a connecting disc, and the outer surface of the main body is fixedly connected with a discharging pipe. The grating shaft can drive the sawtooth ring to rotate on the surface of a material when rotating, when the pushing force generated when gas is sprayed out pushes the pressing plate to move downwards, pressing force reduction caused by adsorbent sedimentation can be compensated, the adsorbent can be continuously kept in a pressed state, meanwhile, in the pressure swing adsorption process, the pressure swing adsorption efficiency is improved, and the service life of the adsorbent is prolonged. Due to the fact that adsorption and desorption circulation causes frequent expansion and contraction of the adsorbent, compared with a traditional pressing device which only depends on a spring and other single modes, the device can effectively maintain the tight state of an adsorbent bed layer, channeling phenomena are reduced, and therefore the adsorption efficiency is improved.

The utility model discloses a multifunctional aroma diffuser capable of quickly diffusing aroma, which comprises a bottom shell provided with a spice storage cavity, spices capable of diffusing are arranged in the spice storage cavity, a surface cover is arranged at an opening of the bottom shell, and a power supply and a driving motor are arranged in the bottom shell; the top of the face cover is provided with a multi-layer vertical face fanning light-transmitting structural part which is fixed to a main shaft of the driving motor and generates breeze to achieve the function of a small fan during rotation. The driving motor drives the multi-layer vertical face fanning light-transmitting structural part to rotate, and the fragrance of the perfume is diffused outwards through the multi-layer vertical face fanning light-transmitting structural part. The fan is reasonable in structural arrangement, and the top of the face cover is provided with the multi-layer vertical face fanning light-transmitting structural part which is fixed to the main shaft of the driving motor and generates breeze to achieve the function of a small fan when rotating. The driving motor can drive the multilayer facade fanning light-transmitting structural member to rotate to generate gentle breeze to realize fanning, and the generated airflow can quickly diffuse fragrance, so that the diffusion efficiency of the fragrance is improved, and the effectiveness of aromatherapy is improved.

The invention discloses a method for preparing a hydrophobic Ti / SiO2 coated composite aerogel desulfurization adsorbent by a micro-droplet template method and application of the hydrophobic Ti / SiO2 coated composite aerogel desulfurization adsorbent. The method comprises the following steps: mixing aliphatic hydrocarbon in which thiophene compounds are dissolved, which is used as a non-polar template agent solution and methyltriethoxysilane, which is used as a silicon source, with absolute ethyl alcohol and water to form a polar solution, stirring the non-polar template agent solution in a polar solvent to form hydrophobic SiO2 coated template gel containing a micro-droplet template, aging, doping a Ti element, and drying to obtain the hydrophobic SiO2 coated template gel containing the micro-droplet template. According to the present invention, the micro-droplet template is removed, drying is performed to obtain the hydrophobic Ti / SiO2-coated template composite aerogel desulfurization adsorbent, the hydrophobic Ti / SiO2-coated template composite aerogel desulfurization adsorbent is applied to adsorption simulation of thiophene compounds in aromatic hydrocarbons, and the result shows that the hydrophobic Ti / SiO2-coated template composite aerogel prepared by using the micro-droplet template method has good adsorption performance on thiophene sulfides, and when the aromatic hydrocarbon product has the polar substance, the hydrophobic Ti / SiO2-coated template composite aerogel desulfurization adsorbent has good adsorption performance on the thiophene sulfides. The adsorbent still has relatively high adsorption capacity and adsorption selectivity to thiophene sulfides, and has a good application prospect in the field of deep desulfurization of aromatic hydrocarbon products.

The invention relates to the technical field of oxygen reduction catalysts, in particular to a transition metal-based triatomic oxygen reduction catalyst and a preparation method and application thereof. The invention relates to a preparation method of a transition metal-based triatomic oxygen reduction catalyst. The preparation method comprises the following steps: dispersing carbon nanotubes in a solvent to obtain a dispersion liquid; adding transition metal acetate, urea and 4, 4 '-dihydroxy [1, 1'-biphenyl]-3, 3 ', 5, 5'-tetracarboxaldehyde into the dispersion liquid, performing ultrasonic treatment to obtain mixed liquid, and then performing heating reaction in an inert atmosphere; and after the reaction is finished, naturally cooling to room temperature, filtering, washing and drying to obtain the transition metal-based triatomic oxygen reduction catalyst. The catalyst designed by the invention not only has an efficient catalytic active site, but also remarkably improves the material transmission efficiency and enhances the utilization rate of a catalytic active center by optimizing the structure of a composite material, so that the synergistic enhancement of the electro-catalytic performance is realized.

The application belongs to the technical field of carbonyl sulfur hydrolysis catalysts, and discloses a high-efficiency sulfur-resistant catalyst for carbonyl sulfur hydrolysis, a preparation method and application thereof.The preparation method comprises the following steps: (1) preparing a porous ceramic carrier containing alumina, titanium dioxide and zirconium dioxide; (2) in-situ growing a metal organic framework material containing lanthanum, bismuth and cerium on the surface of the porous ceramic carrier by using a solvothermal method; (3) performing a calcination treatment on the porous ceramic carrier loaded with the metal organic framework material in an oxygen-containing atmosphere to obtain a catalyst precursor; and (4) performing a reducing gas plasma bombardment treatment on the catalyst precursor to obtain the high-efficiency sulfur-resistant catalyst.The high-efficiency sulfur-resistant catalyst has high-efficiency low-temperature activity, excellent sulfur resistance and long service life.

The invention discloses a lithium iron manganese phosphate composite material and a preparation method and application thereof, belonging to the technical field of lithium batteries. The composite material comprises the following raw materials: a lithium source, a manganese source, an iron source, phytic acid, graphene oxide, polyvinyl alcohol, pyrrole and a dopant. The invention adopts a hydrothermal method to make hydroxyl groups on the surface of graphene oxide react with phytic acid to obtain a mixed solution a, and similarly obtains a mixed solution b containing polyvinyl alcohol phytate, combines a manganese source, a lithium source and an iron source, prepares a semi-finished product by roasting, and then coats a doped polypyrrole layer on the surface of the semi-finished product to finally obtain a lithium iron manganese phosphate composite material with a three-dimensional structure. The three-dimensional structure is a composite structure of a rod-like structure and a sheet structure. Compared with the lithium iron manganese phosphate material with a single morphology in the prior art, the specific surface area is significantly improved, the stability is stronger, the contact area with the electrolyte is larger, and the diffusion efficiency of lithium ions and the charge and discharge performance of the battery are improved.

The invention discloses a cobalt-free lithium-rich manganese-based oxide material for a lithium ion battery and a preparation method thereof.The preparation method comprises the steps that a lithium source and a precursor in a preset proportion are mixed and ball-milled to obtain a mixture, and then the mixture is subjected to first calcination to obtain a first reactant; the first reactant is soaked in a citric acid ethanol solution, magnetic stirring is carried out at the same time, the soaked first reactant is subjected to second calcination, and a second reactant with the surface coated with a spinel phase is obtained; mixing and stirring a second reactant and an aluminum source according to a preset proportion, and performing third calcination on the stirred second reactant to enable the aluminum element to enter a lattice structure of the second reactant to obtain a third reactant; and calcining the carbon source and the third reactant together to obtain the cobalt-free lithium-rich manganese-based oxide material for the lithium ion battery coated with the carbon layer. The cobalt-free lithium-rich manganese-based oxide material for the lithium ion battery, which is obtained by the method, shows better cycling stability.

The invention provides a preparation method of a high-performance grain boundary diffusion sintered neodymium iron boron material, and belongs to the technical field of permanent magnet materials. The low-melting-point heavy-rare-earth-free alloy coating is coated and cured on the easy-to-diffuse surface of the neodymium-iron-boron base material magnet, and the heavy-rare-earth alloy coating is coated and cured on the low-melting-point heavy-rare-earth-free alloy coating; and the coated magnet is sequentially subjected to low-temperature pre-diffusion heat treatment, grain boundary diffusion heat treatment and aging treatment, and then the grain boundary diffusion neodymium-iron-boron magnet is obtained. According to the invention, the diffusion efficiency of heavy rare earth elements can be effectively improved, the coercive force of the magnet is improved, and relatively high residual magnetism can be achieved.

The utility model discloses a Mylar film structure for aluminum shell battery, aluminum shell battery and electronic product belong to battery technical field, including Mylar film body, Mylar film body includes first cladding piece, second cladding piece and the connecting cladding piece of first cladding piece and second cladding piece are connected respectively, recesses is formed in first cladding piece and is used to store the first liquid storage groove of electrolyte, recesses is formed in second cladding piece and is used to store the second liquid storage groove of electrolyte, first liquid storage groove and second liquid storage groove all are located on the side surface of battery roll core. The utility model reaches the technical effect of improving diffusion efficiency, and promotes the long -term cycle performance of battery.

The application provides a positive electrode active material, a preparation method of the positive electrode active material and a potassium ion battery, and relates to the field of secondary batteries. The positive electrode active material comprises a core and a carbon layer covering the core, and the chemical formula of the core is K 3+x V 3‑x Ni x (PO4)4, 0.05<=x<=0.5. In the application, Ni 2+ is doped in the KVP material, so that the structural stability and the electrochemical performance of the positive electrode active material are effectively improved. Specifically, by doping Ni 2+ , the product purity and the crystalline integrity of the positive electrode active material are significantly improved, the structural stability of the product is enhanced, and the problems of low product purity and many impurities in the existing preparation method are solved. Moreover, the reaction kinetics and the cycle performance of the positive electrode active material are synergistically optimized.

The invention discloses a broken flower removing device for jasmine tea processing and a technology thereof, and relates to the technical field of jasmine tea processing. The device comprises a device body, a large-hole screen plate and a small-hole screen plate are sequentially and transversely arranged in the device body in a penetrating and sliding mode from top to bottom, and a first discharging shell and a second discharging shell are sequentially fixed to one side of the device body from top to bottom; a driving assembly used for driving the large-hole screen plate and the small-hole screen plate to shake is arranged on the other side of the device body. According to the jasmine tea screening device, through the arrangement of the discharging device, a second motor and a rotating rod are matched to drive partition plates to discharge jasmine tea raw materials falling between every two adjacent partition plates out of the feeding box, and therefore the situation that the jasmine tea raw materials are stacked and fall on a large-hole screen plate, consequently, the jasmine tea is not evenly distributed in the screening process, and the quality of jasmine tea is improved is avoided. Therefore, the problem that the large-hole screen plate cannot effectively separate the scented tea of different sizes or the broken flowers in the scented tea is solved.

The invention discloses a high-entropy alloy SiC superhard protective layer and a preparation method thereof. The method comprises the following steps: 1, filling a high-entropy alloy into Si powder, compacting, heating and diffusing to obtain a Si-infiltrated high-entropy alloy; 2, cleaning; thirdly, the cleaned Si-infiltrated high-entropy alloy is loaded into C powder to be compacted, high-temperature thermal activation heating diffusion is carried out, and Si-C binary composite infiltrated high-entropy alloy is obtained; and 4, cleaning the surface of the high-entropy alloy to obtain the SiC superhard protective layer. According to the method, surface treatment, powder coating, high-temperature diffusion and ultrasonic cleaning treatment processes are combined, the principle of binary composite permeation is adopted, Si and C are sequentially diffused and permeated into the surface of the high-entropy alloy for in-situ synthesis of the SiC superhard protective layer, the binding force between the SiC superhard protective layer and a high-entropy alloy matrix is improved, and the strength of the high-entropy alloy is improved. And the service performance of the high-entropy alloy under the service environments of high temperature, high pressure, chemical corrosion, frictional wear and the like is effectively improved, and the method is suitable for various types of high-entropy alloys.

The utility model discloses a fogging disinfection device for central air conditioning, including air duct, air duct bottom is equipped with air duct flange, air duct below is equipped with solution tank, the top of solution tank is equipped with the solution tank flange of air duct flange adaptation, air duct inside is equipped with the two piece microporous ceramic atomizing piece of inclination setting, the surface of microporous ceramic atomizing piece is equipped with annular piezoelectric driver, the cavity is formed between microporous ceramic atomizing piece, the inside of cavity is equipped with atomizing nozzle, the atomizing nozzle is extended to the inside of solution tank through hose, the utility model discloses through secondary atomization processing, and the disinfectant spreads along the direction of air current, plays good atomization efficiency processing effect, and the effect of atomization diffusion is effectively improved with the air direction and the inclination direction of microporous ceramic atomizing piece, and the efficiency of diffusion is improved.

The application provides an image encryption method based on ring rotation and generalized Feistel cipher structure. The method comprises the following steps: generating a chaotic sequence by a hyperchaotic Chen system, and performing ring rotation twice on a plaintext image to realize efficient global scrambling; then, a one-dimensional chaotic system 1DL-SCS is used to perform line-by-line index scrambling on the image, and then the pixel points are redistributed column by column to further break the correlation between the pixels; in the diffusion stage, the plaintext is divided into four parts, substituted into an improved generalized Feistel cipher structure for calculation, and further divided into two parts in the round function, so that the diffusion efficiency is greatly improved, and through two rounds of iteration operation, a good encryption effect can be obtained, and the security is high.

The present invention discloses a water treatment device and a water purification system, which improves the water treatment effect; the water treatment device includes a water treatment shell; the interior of the water treatment shell is sequentially provided with a magnetization treatment device and a hydrogen generation device made of magnetic shielding material from the inside to the outside, and the hydrogen generation device is arranged around the outside of the magnetization treatment device; a water inlet and a water outlet are provided on the water treatment shell, the water inlet is connected to the magnetization treatment device, the water outlet is connected to the hydrogen generation device, and the magnetization treatment device is connected to the hydrogen generation device. By sleeve-arranging the hydrogen generation device between the magnetization treatment device and the water treatment shell, the effect of preventing the magnetic field of the magnetization treatment device from leaking out is achieved, thereby enhancing the magnetic field strength, thereby increasing the orderliness of water molecules, improving the diffusion efficiency of water molecules, promoting the reaction of water molecules in the hydrogen generation device, so that the hydrogen content and magnetization effect of the treated water are effectively improved, and the treatment effect of the water treatment device is improved.

The utility model relates to a quick automatic fertilizing device for walnut planting, and belongs to the technical field of walnut planting. Mainly comprises a machine base, crawler wheels, a water tank, a sealing cover, a water outlet pipe, a butterfly valve, a stirring mechanism, a coiling frame and a water conveying hose, the crawler wheels are installed on the two sides of the machine base, the water tank is installed at the top end of the machine base, the sealing cover is installed on a water inlet of the water tank, one end of the water outlet pipe is installed at the bottom of the water tank, and the other end of the water outlet pipe extends out of the machine base; the stirring mechanism and the coiling frame are installed at the top end of the water tank, and the water conveying hose is wound around the coiling frame. The fertilizer is put into the water tank to be melted, the stirring mechanism fully mixes water and the fertilizer, the crawler wheel drives the device to reach a fertilization point, the water outlet pipe and the water delivery hose pour the mixed fertilizer to the roots of walnuts and uniformly convey the mixed fertilizer to the soil surface or soil layer of the roots of the walnuts, and the fertilizer directly permeates into the soil and directly reaches the root position after being absorbed by the soil. The diffusion efficiency and the fertilizer utilization efficiency are high.

The present invention relates to a metal bipolar plate with a variable cross-section and step-shaped flow channel for a fuel cell. In order to solve the problems of low gas diffusion efficiency, poor drainage, and uneven current density distribution of the linear flow channel of the metal bipolar plate, a metal bipolar plate structure with a variable cross-section and step-shaped flow channel for a fuel cell is proposed. The bottom of the oxygen flow channel and the hydrogen flow channel are both stepped, and each of the oxygen flow channel and the hydrogen flow channel includes m steps; the depth of each oxygen flow channel is gradually increased from the outer flow channel of the cathode monopolar plate to the middle flow channel, and the depth of each hydrogen flow channel is gradually reduced from the outer flow channel of the anode monopolar plate to the middle flow channel; from the flow channel inlet to the outlet direction, the depth of each step of the oxygen and hydrogen flow channels is gradually reduced, and the difference in the depth of the two adjacent steps is the same; the sizes of the cross sections of the oxygen and hydrogen flow channels perpendicular to the gas flow direction are different. The present invention can effectively improve the gas diffusivity and the uniformity of the current density of the rear section flow channel, and improve the drainage performance.

This invention discloses the application of an electrode material for reducing intracellular resistance genes in drug-resistant bacteria. A platinum-doped dendritic TiO2 nanowire structure based on a three-dimensional material is formed by growing a micron-sized TiO2 backbone array and platinum-doped nano-sized TiO2 branches on the surface of a porous electrode. The prepared dendritic nanowire three-dimensional electrode material has a larger specific surface area, providing more reactive sites and strong electric field sites. Platinum doping enhances the conductivity and electrocatalytic performance of the nanowires. Furthermore, by combining it with chloride salts / oxidants, the electroporation and electrocatalysis of the nanowire electrode surface are coupled. The strong electric field confined at the nanowire tip induces perforation of the drug-resistant bacterial cell structure, strengthening the contact and reaction between the oxidant and the resistance gene. The high electrocatalytic activity confined at the nanowire tip induces the generation of strong oxidizing free radicals, achieving the goal of destroying the drug-resistant bacterial cell structure and efficiently reducing intracellular resistance genes.

The application discloses a preparation method of nanosheet TS-1 molecular sieve and application thereof, relates to the technical field of catalysts, and synthesizes the TS-1 molecular sieve through a double quaternary ammonium salt structure directing agent containing a benzene ring; the obtained TS-1 molecular sieve has rich surface active sites and contains almost no impurities such as non-framework titanium and anatase TiO2; meanwhile, the nanosheet morphology significantly improves the diffusion and mass transfer performance of macromolecular reactants in a catalytic process, effectively enhances the accessibility of active sites; in a cyclohexene epoxidation reaction, the molecular sieve exhibits excellent catalytic performance and shows good application prospect; and the problems of significant channel diffusion limitation and low accessibility of active sites of the TS-1 molecular sieve in a catalytic process are solved.

The application discloses a kind of perovskite laminated solar cell and preparation method thereof, photovoltaic module and photovoltaic device, belong to solar cell technical field.The perovskite laminated solar cell from light-receiving front to light-receiving back successively includes substrate, bottom electrode, first hole transport layer, wide band gap perovskite layer, first electron transport layer, barrier layer, intermediate interconnection layer, narrow band gap perovskite layer, second electron transport layer, hole blocking layer, top electrode;The intermediate interconnection layer includes first sublayer, self-assembled monolayer and second sublayer, first sublayer faces first electron transport layer, second sublayer faces narrow band gap perovskite layer, and self-assembled monolayer is located between first sublayer and second sublayer.The application can inhibit interface scattering and reduce wide-angle reflection loss under oblique incidence, while maintaining excellent electrical transmission to promote carrier transfer and recombination, significantly improve the overall photovoltaic performance of device.

This invention relates to the field of titanium alloy chemical heat treatment technology, specifically to a method for preparing a nitrided layer in titanium alloy using ion implantation-assisted plasma nitriding and its application. First, the titanium alloy is polished. Then, different dosages of Ti-La elements are implanted into the surface of the titanium alloy using ion implantation technology. Finally, the implanted titanium alloy is subjected to plasma nitriding. The purpose of this invention is to pre-introduce vacancies, dislocations, and other crystal defects on the surface of the titanium alloy using high-energy ion implantation technology, increasing the nitrogen diffusion channels during the nitriding process and improving nitriding efficiency. Under the same nitriding conditions, a thicker nitrided layer can be achieved. Simultaneously, the extremely fine nitride nucleation formed on the surface under the catalysis of La results in a denser surface, achieving higher surface hardness under the same conditions. This helps improve the mechanical, tribological, and fatigue properties of titanium alloys, and can be applied in aerospace, biomedical devices, and marine equipment fields.

The invention discloses a preparation method of a catalyst for preparing acetaldehyde from ethanol, and belongs to the technical field of chemical synthesis, and the method comprises the following steps: dissolving a metal salt in deionized water, adding a silicon source and a template agent, adjusting the pH value, atomizing the solution, and carrying out aerosol spray drying to form a catalyst precursor; immersing the precursor into a dopamine-Tris buffer solution, and performing in-situ polymerization to form a polydopamine shell layer; and performing high-temperature carbonization and hydrogen reduction to obtain the catalyst. The method comprises the following steps: adding a catalyst into a reaction tube, fixing in a fixed bed reactor, preheating ethanol, introducing into the fixed bed reactor, reacting on the surface of the catalyst to generate acetaldehyde and hydrogen, condensing and separating acetaldehyde, and collecting hydrogen through a gas device arranged at the outlet of the reactor. According to the invention, the problems of low acetaldehyde selectivity, easy sintering deactivation of the catalyst and the like in the prior art are solved, the acetaldehyde selectivity is effectively improved, and the service life of the catalyst is prolonged.

The utility model provides a hydrogen peroxide atomizing sterilizer, which relates to the technical field of sterilizing equipment and comprises a shell, a disinfectant box, a fan, at least one atomizing nozzle and a vaporization cavity, the atomizing nozzle is connected with the vaporization cavity, and the fan and the disinfectant box are respectively connected with the vaporization cavity through hoses. A lifting assembly used for driving the atomizing nozzle is arranged in the shell, the lifting assembly is an electric push rod, a guide hole allowing the vaporizing cavity to slide vertically is vertically formed in the shell, the electric push rod is vertically arranged in the shell, and the output end of the electric push rod is connected with the bottom of the vaporizing cavity. According to the hydrogen peroxide atomization disinfection machine, the height of the atomization spray head is changed through the lifting assembly, so that the atomization spray head can spray a disinfectant to spaces with different heights, the diffusion efficiency of the disinfectant in the spaces is improved, the diffusion uniformity of hydrogen peroxide gas is improved, and finally the disinfection and sterilization effects are improved.

The invention relates to the cross technical field of sodium-ion batteries and glass preparation, in particular to a sodium-ion battery negative electrode material and a preparation method thereof, and the sodium-ion battery negative electrode material comprises a current collector and a composite active coating attached to the current collector; the composite active coating is formed by coating and drying slurry, and the slurry comprises a glass material, a conductive material and a binder. According to the invention, the glass material is introduced into the composite active coating, so that the structural stress in the sodion deintercalation process is effectively buffered, and the phase change and structural collapse of the electrode material are inhibited, thereby remarkably improving the cycling stability; meanwhile, the ion diffusion rate and the electron conduction efficiency are enhanced and the rate capability and the capacity performance are improved by a three-dimensional conductive network formed by the glass material, the conductive material and the binder in a synergistic manner, the overall preparation process is simple, the cost is relatively low, and a feasible material solution is provided for high-performance application of the sodium-ion battery in the field of large-scale energy storage.

The present invention relates to a particle fusion supercritical compression foaming production process and device, and belongs to the field of supercritical foaming technology. In the foaming method provided by the present invention, by increasing the gas-solid interface of the material, short-distance diffusion is carried out in units of polymer particles, the swelling time is shortened, and at the same time, the advantage of the compression foaming process in producing large-sized foam materials is ensured by utilizing one-piece molding in a confined space. In addition, the present invention also adopts the design of inner and outer molds, wherein the inner mold can be replaced in size and shape, which improves the utilization rate of the equipment itself and the product diversification to a certain extent. That is, the new method of this patent adopts particle fusion technology to effectively overcome the shortcomings of supercritical compression foaming and utilizes the design of one-piece molding and double molds to fully retain its advantages, which is very important for the industrial development of this technology.

The utility model discloses a semiconductor optical glass batch mixer, and belongs to the technical field of semiconductor optical glass production equipment. A semiconductor optical glass batch mixing machine comprises a mixing shell, an access cover, a feeding hopper, a conveying pipe and a rotating mechanism, the conveying pipe is rotatably arranged on the access cover in a penetrating mode, a driving shaft is rotatably connected into the conveying pipe, a first auger blade is fixedly connected to the driving shaft in a sleeving mode, and a plurality of guide pipes are fixedly connected to the conveying pipe; and a plurality of discharging pipes are fixedly connected to the lower side of the material guiding pipe. According to the technical scheme, by arranging the material guiding pipe and the material discharging pipe, when glass raw materials are mixed, the first auger blade rotates, an additive is input into the material guiding pipe and can be dispersed to all positions of the raw materials in the material mixing shell through the material discharging pipe, and the uniform mixing efficiency is effectively improved; and the material guide pipe not only can stir the raw materials, but also can further improve the diffusion efficiency of the additive.