897 results about "Industrial scale" patented technology

The invention discloses a modified aramid fiber as well as a preparation method and application thereof. The modified aramid fiber comprises an aramid fiber and a carbon nanotube, the aramid fiber and the carbon nanotube are connected through an amido bond, the length of the carbon nanotube is 1-5 [mu] m, and the surface of the carbon nanotube is grafted with an amino-containing polymer. According to the modified aramid fiber disclosed by the invention, the surface roughness of the aramid fiber is improved due to the fact that the carbon nanotubes with the length of 1-5 microns are grafted on the surface, so that the aramid fiber and the epoxy resin generate a mechanical locking effect. Furthermore, the amino groups on the surface of the modified aramid fiber are covalently bonded with the epoxy resin, so that the bonding force between the fiber and the resin is further improved. In addition, the modulus of the introduced interface layer is between the modulus of the resin and the modulus of the aramid fiber, so that the defects at the interface of the fiber composite material under working conditions can be reduced. Meanwhile, the modified aramid fiber can be continuously produced, the treatment process is simple, efficient and green, and industrial amplification is facilitated.

The invention discloses a diaphragm as well as a preparation method and application thereof, and belongs to the technical field of battery materials. The diaphragm comprises a base membrane and a coating coated on at least one side surface of the base membrane, the coating comprises an inorganic adhesive and inorganic particles; the coating contains crystals formed by an inorganic adhesive; the crystals at least comprise needle-shaped crystal whiskers, part of the crystals jointly form a crystal whisker group, and the rest of the crystals are located among the inorganic particles; the inorganic adhesive comprises M2O.nSiO2 with the mass being 1%-35% of the mass of inorganic particles in the coating, M comprises at least one of Na, K and Li, and n is larger than or equal to 1 and smaller than or equal to 4. The diaphragm has good stability and durability at a high temperature, has relatively high peel strength, wettability, ionic conductivity, puncture strength and air permeability, and can ensure that the battery still can operate safely and efficiently at a high temperature. The preparation method of the diaphragm is simple, is easy for industrial large-scale preparation, and has a relatively good industrial prospect.

Methods for preparing high entropy carbides (HECs), and powders thereof, are provided. One method includes spray-drying a base carbide feedstock and consolidating. Another method includes cold crucible induction of a base carbide feedstock. The HECs produced are of a quality suitable for use in industry. The methods are scalable in size, and suitable for use on an industrial scale. Also included are HEC feedstocks produced by the methods, and articles, such as coatings, produced from the HECs.

The invention discloses a method for preparing an iron-nickel-molybdenum-based electrocatalyst through combination of electrodeposition and rapid Joule heat and application of the method. The method comprises the steps that S1, a porous nickel substrate is pretreated, and the pretreated porous nickel substrate is obtained; s2, obtaining a nickel salt solution, a molybdenum salt solution and a ferric salt solution; s3, obtaining a mixed solution; s4, putting the mixed solution serving as electrolyte into a dual-electrode electrolytic tank, carrying out electro-deposition treatment by taking the pretreated porous nickel substrate as a cathode and an inert electrode as an anode, and washing and drying to obtain a Fe-Ni-Mo-LDH precursor; and S5, carrying out Joule thermal pyrolysis treatment on the Fe-Ni-Mo-LDH precursor, so as to obtain the iron-nickel-molybdenum based electrocatalyst. The preparation method can effectively regulate and control the size structure of the catalyst, and is suitable for preparing iron-nickel-molybdenum-based electrocatalysts with different substrates and different sizes; and the electrocatalyst has the advantages of uniform and stable nanostructure and high loading capacity. Meanwhile, the preparation method is short in reaction time, high in heating efficiency, high in repeatability and suitable for industrial large-scale production.

The invention relates to the field of organic chemical synthesis, in particular to a synthesis method of 6-chloronicotine. The invention provides a synthesis method of 6-chloronicotine, which comprises the following steps: taking 6-hydroxysmin (CAS: 70969-38-9) as an initial raw material, and sequentially carrying out reduction reaction, aminomethylation reaction and chlorination reaction to finally obtain the target product 6-chloronicotine. Through the synthetic route, the 6-chloronicotine can be obtained, and the product purity can reach 99.5% or above. The synthesis method is simple in process, high in yield and suitable for industrial large-scale production.

Thermo-electrochemical generator cells in general supply energy in the thermal gradient; no energy is available when the temperature is consistent. The aim of the invention is to overcome this disadvantage. To achieve this aim, a metallization mixture is used, by means of which it is possible for the first time to provide electrodes which have long-term stability, specify a current direction for one of the redox reactions via a stable overvoltage, and make energy available when the heat is consistent. A metallization method and a thermo-electrochemical generator cell according to the method can be produced and provided especially cost-effectively using rancid, natural oils as the raw material and starting material for the metallization mixture and using cost-effective, technically pure chemicals. As a result, it is possible for the first time to directly industrially utilize non-directional waste heat in the range of 10-70°C on an industrial scale using a cell (1) according to figure 1, comprising: electrode (2), first main surface (12), second main surface (14), electrolyte layer (4), second electrode (3), first main surface (13) and second main surface (15).

According to the method for promoting the fragrance release of the Phalaenopsis amabilis in the flowering stage, the influence of flowering days, different light intensities and different temperatures on the fragrance release in the full-bloom stage is compared, and the light and temperature adaptability of the fragrance of potted Phalaenopsis amabilis in the full-bloom stage is proved; and a basic basis can be provided for breeding aromatic phalaenopsis varieties and researching the action mechanism of the flower fragrance of important economic ornamental flowers. Meanwhile, the optimal culture medium formula of each link of tissue culture and rapid propagation of the phalaenopsis purpurascens is further deeply researched, discussed and screened, so that the phalaenopsis purpurascens can be developed and applied on an industrial scale.

The present disclosure is generally related to methods and compositions for producing heterologous lectin proteins of interest in recombinant filamentous fungal cells. Certain embodiments are therefore, directed to compositions and methods for the production of lectin proteins, recombinant filamentous fungal strains comprising enhanced lectin protein productivity phenotypes, polynucleotides (e.g., expression constructs) encoding one or more lectin proteins, industrial scale fermentation, lectin protein recovery processes and the like.

The invention discloses a system and a method for predicting reaction conditions of a menthane carboxamide cooling agent, and aims to optimize the reaction conditions, improve the experiment efficiency, reduce the production cost and ensure the stable product quality through an intelligent method. According to the system, the design experiment DoE and the response surface method RSM technology are combined, the relation between reaction conditions and products is systematically analyzed, multi-scale modeling is utilized, a molecular reaction mechanism and a macroscopic reactor model are combined, seamless connection from a laboratory to an industrial scale is achieved, and challenges in the amplification process are solved. By means of real-time data monitoring and feedback adjustment, the system can dynamically optimize the reaction process, controllability and stability of the production process are improved, the scientificity and intelligent level of reaction optimization are improved, and an efficient, controllable and environment-friendly solution is provided for large-scale production of the menthane carboxamide cooling agent.

The invention relates to the technical field of coatings, discloses a high-solid epoxy seal primer suitable for a wet base surface and a preparation method of the high-solid epoxy seal primer, and aims to overcome the defect of poor application performance of the wet base surface in the prior art. A water-responsive curing system, dynamic interface modification components and a synergistic mechanism of precise cross-linking regulation are constructed, a special curing agent with anti-protonation characteristics is adopted and matched with a modified molecular sieve to adsorb water on a basal plane so as to weaken water interference, interface bonding is enhanced through a coupling agent containing dynamic covalent bonds and a composite filler, and the water-based composite material is prepared. The rheology regulation and control auxiliary agent is supplemented to optimize the construction performance, the environment-friendly component is fused to give consideration to the characteristic of low volatility, efficient curing of a high-water-content base plane is achieved, the interface stability and long-acting protection capacity of a coating and a base material are improved, the coating is suitable for industrial large-scale production, and the coating requirement in a humid environment is met.

To provide an electrochemical cell that is low in production cost, can be constructed in a space saving manner, can generate a large amount of hydrogen and oxygen with excellent energy efficiency, and can carry out AEM water electrolysis on an industrial scale.SOLUTION: An electrochemical cell (0) for alkali membrane water electrolysis, comprises an anode (1), a cathode (2) and an anion conductive membrane (3) disposed between the anode (1) and the cathode (2), with the anode (1) being partially or entirely structured as a first porous sintered body (1) including particles fused with each other at grain boundaries, and the first porous sintered body (1) being in direct contact with the membrane (3). There is provided the use of the electrochemical cell (0) in a method of generating hydrogen and oxygen by electrochemically decomposing water. There are further provided an electrolysis tank comprising the plurality of cells (0), and a method of producing the electrolysis tank.SELECTED DRAWING: Figure 1a

The invention relates to the field of organic chemical synthesis, in particular to a preparation method of chiral 6-methyl nicotine. The invention provides a synthesis method of single chiral 6-methyl nicotine, which comprises the following steps: taking methyl 6-methyl nicotinate (compound I) and N-vinyl pyrrolidone (compound II) as initial raw materials, and sequentially carrying out condensation reaction, hydrolysis reaction, cyclization reaction, chiral reduction reaction and aminomethylation reaction to finally obtain the target product chiral 6-methyl nicotine (R or S compound VI). According to the synthetic route, the 6-methyl nicotine with two configurations of R and S can be prepared respectively, and the purity of the product can reach 99.5% or above. The synthesis method is simple in process, high in yield and suitable for industrial large-scale production.

The invention discloses a preparation method of biomass fiber aerogel for micro-plastic adsorption, and belongs to the field of micro-plastic adsorption. The preparation method comprises the following steps: (1) preparing a covalent cross-linking mixture by taking biomass nanofibers as a base material; (2) carrying out foaming treatment on the covalent cross-linking mixture by using a surfactant; (3) carrying out circulating freezing and thawing treatment on the covalent cross-linking mixture subjected to foaming treatment; and (4) performing normal-pressure drying on the covalent cross-linking mixture subjected to circulating freezing and thawing treatment to obtain the biomass fiber aerogel. The biomass fiber aerogel material obtained by the invention has high porosity and can effectively adsorb various micro-plastics, and the preparation process used in the invention does not need critical condition drying equipment, so that the preparation cost and period of aerogel are reduced, and the biomass fiber aerogel material has industrial large-scale production potential.

The invention provides a novel crystal form and a novel crystal form APTI-I. The novel crystal form and the novel crystal form APTI-I are radiated by Cu-K alpha, and an X-ray powder diffraction pattern represented by a 2 theta angle has characteristic peaks at 5.0 degrees + / -0.2 degrees, 6.3 degrees + / -0.2 degrees, 7.8 degrees + / -0.2 degrees, 12.2 degrees + / -0.2 degrees and 20.0 degrees + / -0.2 degrees. The crystal form is easy to prepare, high in purity, good in stability, good in solubility in buffer solutions and deionized water solvents with different pH values, and suitable for industrial large-scale production and preparation of pharmaceutical preparations.

The invention discloses a method for preparing a carbon nano tube by rapidly decomposing a waste high-molecular polymer, and belongs to the technical field of nano material preparation. The method comprises the following steps: mixing a waste high-molecular polymer (such as polyethylene, rubber and the like) serving as a carbon source with a metal-based catalyst and a conductive carbon material, sealing the mixture in a reaction container, connecting an external power supply, instantaneously heating to 600-2500 DEG C under the action of current through the Joule heating effect of the conductive carbon material, and reacting for 5-60 seconds to realize the efficient growth of the carbon nanotube. According to the method, the agglomeration of the catalyst is inhibited through the rapid heating and cooling characteristics of Joule heat, the carbon source is promoted to be selectively decomposed into C1-C3 small molecules, and the graphitization degree and diameter uniformity of the carbon nanotubes are remarkably improved. Compared with the traditional method, the method has the advantages of short reaction time (second level), low energy consumption, high product purity, capability of macroscopic preparation and the like, and is suitable for industrial large-scale production.

The invention provides a preparation method of lithium sulfide, and relates to the technical field of lithium sulfide. According to the preparation method of the lithium sulfide, the lithium sulfide is obtained by reducing the sulfur salt component and the lithium sulfide in the atmosphere of the reducing gas, so that the process conditions are relatively mild, and the industrial large-scale production is facilitated.

The invention provides a Ziegler-Natta catalyst silicon-magnesium composite carrier and a preparation method thereof, a continuous phase silicon solution is prepared by using a double template agent, the continuous phase silicon solution is mixed with a cross-linking agent and an initiator to obtain a dispersed phase, the dispersed phase is subjected to two-phase speed regulation mixing through a micro-fluidic chip to finally obtain double emulsion droplets, and then operations such as curing, template agent removal and acid etching are performed to obtain the Ziegler-Natta catalyst silicon-magnesium composite carrier. The preparation method comprises the following steps: preparing a spherical silicon dioxide carrier with more excellent performance, then carrying out magnesium source loading and post-treatment, and finally preparing the Ziegler-Natta catalyst silicon-magnesium composite carrier with monodispersity, hierarchical porous structure (micropore-mesopore-macropore), high loading rate and high mechanical strength, and is suitable for industrial-scale polypropylene catalyst production. The prepared catalyst carrier is more perfect in morphology and more uniform in particle size.

The invention relates to an extraction method for strengthening low-concentration rare earth elements and equipment for implementing the extraction method. The extraction method is a continuous extraction process based on the combination of a microfluid technology and a solvent extraction technology, and efficient enrichment and recovery of low-concentration rare earth elements are realized through combined use of a gas-liquid-liquid three-phase system and an extraction agent. The extraction method provided by the invention has the advantages of high mass transfer efficiency, simple operation, recyclable extraction agent, high extraction efficiency, good stability and the like, and is suitable for enrichment and recovery of low-concentration rare earth elements on an industrial scale under the condition of a large phase ratio (greater than 50).

The invention relates to a multifunctional tandem catalytic process for directly preparing methyl acetate / ethanol from synthesis gas. According to the process, a novel catalyst for preparing dimethyl ether from synthesis gas is prepared by adopting an impregnation method, and after the catalyst is sequentially connected with a dimethyl ether carbonylation catalyst and a hydrogenation catalyst in series, efficient directional synthesis of methyl acetate and ethanol is realized in a double-bed or three-bed sequential filling form. According to the invention, high CO conversion per pass, high methyl acetate selectivity and low acetic acid selectivity can be realized, and the problems of corrosion and difficult conversion of a subsequent hydrogenation system are effectively avoided; the multifunctional catalytic system provided by the invention is simple in preparation method and easy to realize industrial large-scale production.

The invention discloses a method for preparing spermidine. The method comprises the following steps: dissolving oxalyl chloride and a base in a first solvent, slowly adding 4-bromo-1-butylamine hydrobromic acid, and reacting to obtain 2-((4-bromobutyl)amino)-2-oxoacetyl chloride; adding a base to the reaction solvent of the obtained 2-((4-bromobutyl)amino)-2-oxoacetyl chloride, and slowly adding 3-bromo-1-propylamine hydrobromic acid to obtain N 1 ‑(4‑Bromobutyl)‑N 2 ‑(3‑bromopropyl)oxalamide; 1 ‑(4‑Bromobutyl)‑N 2 ‑(3‑bromopropyl)oxalamide, benzylamine and a base are added to a second solvent to react to obtain 8‑benzyl‑1,4,8‑triazacyclododecane‑2,3‑dione; 8‑benzyl‑1,4,8‑triazacyclododecane‑2,3‑dione is added to an acid for hydrolysis to obtain N 1 ‑(3‑Aminopropyl)‑N 1 Benzylbutane-1,4-diamine; N 1 ‑(3‑Aminopropyl)‑N 1 Benzylbutane-1,4-diamine is added to Raney nickel / methanol, and hydrogen is passed through the reaction to obtain crude spermidine, which is then distilled to obtain pure spermidine. The preparation method of the present invention is easy to operate and safe, easy to industrial-scale production, and has a high conversion rate of spermidine and high product purity.

Systems for manufacturing reverse osmotic desalination membranes are described. The system is for the industrial scale manufacturing of carbon nanotubes supported reverse osmotic desalination membranes. The system overcomes several technological challenges and develops new membranes, improving aspects of membrane manufacturing and performance.

The utility model discloses a liquid-phase synthesis system of lithium sulfide. Comprising a first lithium sulfate dissolving device, a first barium sulfide dissolving device, a chemical combination reaction device, a first separation device and a second separation device, the liquid phase after-treatment unit is used for concentrating, purifying and drying the liquid phase to obtain lithium sulfide, and the solid phase after-treatment unit is used for washing and drying the solid phase to obtain barium sulfate; the first lithium sulfate dissolving device and the first barium sulfide dissolving device are both connected with a raw material inlet of the combination reaction device; and a reaction product outlet of the combination reaction device is connected with the first separation device. The liquid-phase synthesis system of the lithium sulfide has the advantages that products are easy to separate, the purity of the lithium sulfide products is high, the liquid-phase synthesis system of the lithium sulfide is very suitable for industrial-scale production, and the produced high-purity anhydrous lithium sulfide is very suitable for solid-state battery anode materials and has huge potential economic benefits.

The invention belongs to the technical field of materials, and relates to a high-capacity lithium adsorbent as well as a preparation method and application thereof. The method comprises the following steps: preparing an organic polymer spinning solution from an organic polymer framework material, a hydrophilic fragment material, a gradient pore forming agent and adsorbent active powder; performing wet spinning by using the organic polymer spinning solution to obtain a lithium adsorbent crude product; and performing post-treatment on the lithium adsorbent crude product to obtain a lithium adsorbent finished product. The lithium adsorbent disclosed by the invention can quickly adsorb lithium ions in a solution in a high-capacity manner in the presence of high-concentration impurity ions, and can solve the problems of low capacity and slow mass transfer rate of a granulation lithium adsorbent in the process of extracting lithium from a salt lake. The lithium adsorbent disclosed by the invention has excellent stability and durability, is low in operation cost and is suitable for an industrial-scale lithium extraction process.

The invention relates to the technical field of chemical intermediates, and particularly discloses a preparation method of a givelastat intermediate.According to the preparation method, an initiator compound 5 can be synthesized by adopting cheap 2-hydroxy-6-naphthoic acid (CAS: 16712-64-4, 141 yuan / kg), and the preparation method is different from a method in the prior art. A gemvelastat intermediate compound 4 is synthesized from a compound 5 through a three-step reaction, compared with the prior art, the yield is high, industrial amplification production is more facilitated, in the process of synthesizing a compound 6 from the compound 5, acetonitrile can be adopted as a cyanide source in a reaction system, activated hydroxyl is subjected to a coupling reaction, and the yield is high. In the process of synthesizing a compound 6 from a compound 7 instead of a traditional metal cyanide, or in the process of synthesizing a compound 6 from another compound 5, a cheap cuprous cyanide and cuprous iodide system is adopted for a coupling reaction, and in the process of synthesizing a compound 4 from a compound 7, an acetic acid and sodium triacetoxyborohydride reaction system is adopted, so that the compound 6 is synthesized. And the important intermediate of the givelastat can be obtained with high yield.

The invention relates to an industrial-scale preparation method of a urolithin compound, and particularly, the method comprises the following steps: taking hydroxy-9-fluorenone as a raw material, and synthesizing various types of urolithin, including urolithin A, urolithin B, urolithin C, urolithin D and urolithin E, through the steps of hydroxyl protection, Baeyer-Villiger reaction, hydroxyl deprotection and the like. The novel method for synthesizing the urolithin compound is provided, synthesis steps are simple, raw materials are low in price and easy to obtain, pollution to the environment is small, the yield is high, and the method is suitable for large-scale production and has important significance on industrial production of the urolithin compound.

The invention discloses a metal material current micro-area step-by-step scanning processing device and a processing method thereof. The metal material current micro-area step-by-step scanning processing device comprises a PC control system, a current output system, a current micro-area processing device, a workpiece conveying device, a temperature measurement and control system, an insulation module and a high-performance computer system. According to the equipment and the process, the problems that in the traditional heat treatment process, the size of a furnace cavity is limited, and the heat treatment time is long are solved, meanwhile, the structure performance of a specific tiny area of a metal material can be precisely regulated and controlled, the production efficiency is remarkably improved, the production cost is reduced, the comprehensive performance of a product is improved, and the equipment and the process can be used for industrial large-scale production.

This application provides a method for preparing compound I-b or a pharmaceutically acceptable salt thereof, wherein (S)-N-methylamino-1-(2-thiophene)-1-propanol reacts with 4-fluorobenzo[1,3]dioxolane in a system containing sodium hydride and potassium benzoate to obtain compound I-b. This method has short steps, mild reaction conditions, and is simple to operate, making it suitable for industrial scale-up; moreover, the obtained product has high purity and low isomer content.

Typical commercial surface treatments for continuous carbon fibers are often unavailable for discontinuous fibers. As such, there is little variety of chopped fiber surfaces leading to non-ideal coating solutions which result in poor interfacial compatibility between fibers and a composite matrix. A method of applying a highly effective coating using a high throughput technique for chopped carbon fibers. The method provides the ability to tune both the coating thickness and chemical functionality using processing parameters. The coatings are evaluated using X-ray photoelectron spectroscopy (XPS) for uniformity and composition. Using this technique, thermoplastic composites are highlighted showing an increase in interfacial shear strength (IFSS) of 25 MPa. This process shows promise for increasing the throughput of surface treatment of chopped fiber on the industrial scale.

The invention relates to the technical field of production of silicon-carbon negative electrode materials, in particular to a continuous production device and method for preparing a silicon-carbon negative electrode material by taking porous carbon, silane and hydrocarbon gas as raw materials. The device comprises fluidized beds A1 and B1, storage tanks A2, A4, B2 and B4, cyclone separators A3, B3 and C2 and a heat exchanger C1, and stable fluidization and continuous production of materials are realized through the design of the multi-section reducing fluidized bed. The method comprises the following steps: carrying out silane cracking and silicon embedding on porous carbon, carrying out hydrocarbon gas cracking and carbon coating, cooling and separating, and finally obtaining the silicon-carbon negative electrode material with high capacity and high initial coulombic efficiency. The equipment adaptability can be remarkably improved, the service life is prolonged, efficient and continuous production is achieved, and the equipment is suitable for industrial-scale application.

Systems for manufacturing reverse osmotic desalination membranes are described. The system is for the industrial scale manufacturing of carbon nanotubes supported reverse osmotic desalination membranes. The system overcomes several technological challenges and develops new membranes, improving aspects of membrane manufacturing and performance.