24results about How to "Productive" patented technology

The invention belongs to the technical field of cosmetics, and particularly relates to a skin-color-uniformizing whitening composition derived from plant extracts and application of the skin-color-uniformizing whitening composition. The whitening composition provided by the invention is prepared from the following components in parts by weight: 10 to 15 parts of saussurea involucrata extract, 1 to 8 parts of dendrobium officinale extract, 1 to 5 parts of wood apple extract and 0.5 to 5 parts of banana fruit extract. The four plant extracts are synergistically compounded, transdermal absorption of active ingredients can be promoted, the tyrosinase inhibition rate is effectively increased, and the skin glossiness and whiteness are improved, so that the effects of whitening, brightening and uniformizing the skin color are achieved, the whitening composition is mild and non-irritant, the preparation method is simple and convenient to operate, and the whitening composition has large-scale production capacity and industrial feasibility. When the whitening composition is applied to skin care products such as face cream, the whitening and brightening effects of the face cream can be effectively improved, and the whitening composition has wide market application value.

The utility model relates to the technical field of coal dressing, in particular to a magnetic separator tailing overflow self-circulation water replenishing device which comprises a magnetic separator, a feeding port of the magnetic separator is connected with a dilute medium barrel through a feeding pipe, a water pump is arranged on the feeding pipe, a water inlet of the dilute medium barrel is connected with a water replenishing pipeline, and an overflow pipe of the magnetic separator is located above an opening of the dilute medium barrel. An overflow pipe of the magnetic separator is connected with one end of a backflow pipeline, the other end of the backflow pipeline is located above the dilute medium barrel and close to an opening of the dilute medium barrel, and water overflowing from the overflow pipe of the magnetic separator flows into the dilute medium barrel through the backflow pipeline under the action of gravity. According to the utility model, water overflowing from the overflow pipeline of the magnetic separator can automatically flow to the dilute medium barrel to be used as replenished water, so that the circulation of water resources in the coal dressing system is realized, the use of external water is reduced, additional equipment is not needed, and unnecessary power consumption is effectively reduced, energy is saved and consumption is reduced while the production process is stabilized.

The invention belongs to the technical field of advanced powder material preparation, and particularly relates to a micron-sized metal powder preparation system which comprises a raw material system, a gas supply system and an atomization tower. The atomizing tower comprises an atomizing chamber, a liquid drop collector is arranged at the bottom end of the atomizing chamber, and a reaction kettle is arranged below the liquid drop collector; a micro-mixer and an atomizing device are arranged in the atomizing chamber, the micro-mixer comprises a sol generating unit and a liquid drop generating unit, an inlet of the sol generating unit is connected with a raw material system, an outlet of the sol generating unit is connected with an inlet of the liquid drop generating unit, and an outlet of the liquid drop generating unit is connected with an outlet of the atomizing device. An outlet of the liquid drop generation unit is connected with an inlet of the atomization device, the liquid drop generation unit is further provided with a first gas inlet, and the first gas inlet is connected with a gas supply system. The preparation system provided by the invention realizes accurate control of powder components, morphology and size, and has the advantages of low cost, uniform size, continuous production and the like.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The application belongs to the technical field of solid oxide fuel cell anode catalyst, and particularly relates to a preparation of a multi-doped layered perovskite anode and application thereof in ammonia solid oxide fuel cells. x Ba 1–x Mn 1–y TM y O 3–δ (0.4<=x<=0.6, 0<=y<=0.3, TM=Co, Fe, Cu), the precursor is phase changed under a reducing atmosphere to form a PrBaMn2O 5+δ layered perovskite with rich oxygen vacancies, and the doped transition metal is precipitated in the form of an alloy and anchored on the surface of the layered perovskite. The anode catalyst has a simple synthesis method, low cost, rich and flexible adjustable element composition. The obtained anode catalyst is made into a slurry and then assembled into a solid oxide fuel cell single cell sheet. The solid oxide fuel cell prepared by the application has good power output, electrical conductivity and stability at medium and high temperatures.

The application relates to the technical field of nanobiosensors, and discloses a bimodal nanoprobe for uric acid detection and a preparation method and application thereof. The bimodal nanoprobe is a fluorescence-photothermal bimodal nanoprobe, and is a core-shell structure nanoparticle, which comprises, from the inner layer to the outer layer, a) a fluorescent inner core composed of carbon dots and a silica layer coated outside the carbon dots; b) a manganese dioxide layer coated outside the fluorescent inner core; and c) a molecularly imprinted polymer layer coated outside the manganese dioxide layer. The bimodal nanoprobe in the application integrates a fluorescence signal source (carbon dots), a signal modulation and photothermal unit and a specific recognition layer (a uric acid molecularly imprinted polymer) through ingenious structure design, realizes bimodal sensing of "specific recognition -> MnO2 etching -> fluorescence recovery / photothermal weakening" on UA, and effectively solves the problems of poor selectivity, complicated operation and high cost of traditional methods.

This invention relates to a method for preparing high-purity sodium pyroantimonate from antimony-containing waste, belonging to the field of sodium pyroantimonate preparation technology. Specifically, the method includes: crushing and ball milling the antimony-containing waste, followed by sulfidation-alkali leaching in the presence of modified inorganic mineral additives. Antimony enters the solution as Na3[SbS3], while lead, copper, and iron precipitate as sulfides in the slag phase. The additives improve the settling and filtration performance of the leaching slag and assist in the adsorption of colloidal arsenic. After deep purification of the leachate with sodium sulfide, the mother liquor is cooled and crystallized to remove arsenic, which is separated as sodium arsenite crystals. The purified liquid undergoes air oxidation precipitation under seed crystal induction, followed by liquid-solid separation, washing, and drying to obtain high-purity sodium pyroantimonate product. This invention meets the quality requirements of electronic-grade glass clarifying agents, and features strong process compatibility, controllable additive costs, and recyclable mother liquor.

The invention discloses a high-yield 2-nitropropane preparation process, and belongs to the technical field of organic synthesis and industrial catalysis. According to the method, 1-nitropropane is used as a raw material and is subjected to a gas-phase catalytic isomerization reaction through a fixed bed reactor filled with a Pt-CeO2 / ZSM-5 solid isomerization catalyst in the presence of diluent gas. The reaction is continuously carried out at a specific temperature and pressure, the generated effluent is subjected to cooling and gas-liquid separation, the liquid phase enters a rectification system to be separated to obtain a high-purity 2-nitropropane product, and the unreacted 1-nitropropane and diluent gas can be recycled. According to the present invention, the process has advantages of high atom economy, low raw material cost, easy catalyst separation, good stability, high reaction selectivity, compact process flow and extremely low wastewater generation amount, and the efficient, green and continuous 2-nitropropane production is achieved.

This invention relates to the field of vinyl chloride polymerization technology, specifically disclosing a formulation and method for using high-chloride-ion pure water in vinyl chloride polymerization. Through chemical stabilization design in the formulation and engineering enhancement control in the process, not only is a high-quality general-purpose PVC resin with regular particle morphology, good thermal stability, and extremely low residual salt content produced, but also functionalized PVC resin with higher glass transition temperature is explored and developed by introducing trace amounts of chlorine gas. Furthermore, by using high-chloride-ion pure water with a chloride ion content as high as 8-12% as the continuous phase, the steps of preparing pure water before polymerization and adding hydrochloric acid after polymerization are eliminated. Through mother liquor treatment technology, closed-loop reuse of saline process water and salt resources can be achieved, fundamentally and significantly reducing the consumption of fresh pure water and the total amount of wastewater discharge, which meets the requirements of clean production and green chemical industry. At the same time, the overall production cost is reduced by simplifying raw materials and steps.

This invention discloses a composite flocculant for wastewater from tea filter paper production and its preparation method. The composite flocculant comprises a prepolymerized titanium salt coagulant and a boric acid-functionalized lignin-based polymer. The prepolymerized titanium salt coagulant is prepared by controlling the alkalinity, and the boric acid-functionalized lignin-based polymer uses lignin as a backbone, grafted with cationic monomers and C... 14 -C 18 This composite flocculant comprises long-chain alkyl hydrophobic monomers and monomers containing arylboronic acid groups. Through a unique coupling mechanism, it utilizes the coagulation and charge neutralization effects of titanium salts and the adsorption bridging effects of lignin polymers, combined with the reversible cross-linking of boric acid groups and vicinal diols in polysaccharides, to achieve highly efficient and synergistic removal of fine fibers, colloidal particles, and dissolved organic matter from white water used in tea filter paper production. At dosages of 15-45 mg / L, it exhibits excellent performance in turbidity removal, COD removal, and suspended solids removal, making it particularly suitable for treating wastewater from tea filter paper production.

This invention provides a siloxane ligand-protected Ag 40 Nanoclusters, their synthesis methods, and applications. This invention relates to Ag protected by siloxane ligands. 40 Nanoclusters are composed of RC≡C ‑ and (Ph 4 Si 4 O 8 ) 4‑ Ag protected by both ligands 40 Nanoclusters, with the molecular formula {Ag} 40 [(RC≡C) 8 (Ph 4 Si 4 O 8 ) 6 The silver nanoclusters synthesized in this invention have precise atoms and novel structures; the synthesis method is simple, easy to operate, mild under mild conditions, and the raw materials are readily available, making it potential for industrial and commercial production; the obtained silver nanoclusters exhibit superior fluorescence performance at low temperatures and have a long fluorescence lifetime, making them practically valuable in the field of fluorescent probes and worthy of market promotion.

The application belongs to the technical field of health care products, and specifically discloses a preparation method of a tablet for maintaining and softening blood vessels. The tablet is obtained through the following steps in sequence: raw material pretreatment, binder preparation, wet mixing, swing granulation, boiling drying, lifting type whole granulation, total mixing and tablet pressing, coating, post-treatment and the like. The tablet is prepared by compounding natto powder, corn protein peptide and whey protein peptide in a specific ratio, so that multi-pathway synergistic blood vessel maintenance of fibrinolysis, anti-calcification, blood pressure reduction and endothelial protection is realized. Malt dextrin and microcrystalline cellulose are accurately compounded to ensure the tablet core formability and disintegration timing, and isomaltitol is used to replace the traditional filler to adapt to the metabolic syndrome population. On the premise of ensuring oral safety, the key bottleneck of inactivation of natto active substances by gastric acid is solved, and the timed release and efficient absorption of active ingredients in the intestinal tract are realized.

The invention discloses a preparation method of an ultrathin high-efficiency radiation refrigeration coating as well as the obtained coating and application of the ultrathin high-efficiency radiation refrigeration coating. According to the method, based on a polymer-particle collaborative design strategy, polymers and particles with functional group resonance frequency matched with an atmospheric transparent window are selected, and the particle size is optimized in combination with a Mie scattering theory so as to synergistically enhance middle and far infrared absorption of an atmospheric window wave band and scattering of a solar spectral region. Under the thickness of 200 microns, the sunlight reflectivity of the obtained coating reaches up to 93.8%, the middle and far infrared emissivity reaches 97.1%, the performance of the coating is superior to that of a contrast coating, and the synergistic effect of the material is fully verified. When the thickness of the coating is only 40% of that of a commercial coating, the optical performance of the coating can be comparable with that of a commercial product. The process is simple, the optical performance of the coating is excellent, and the coating has remarkable application advantages in the field of light-weight and low-cost radiation refrigeration.

The invention belongs to the technical field of synthesis of sodium 8-(2-hydroxybenzamido) caprylate (SNAC), and particularly relates to a method for biologically synthesizing SNAC, which comprises the following steps: inoculating yeast to a fermentation medium, adding 2-hydroxy-N-octyl benzamide and a salt-forming agent, controlling the pH value of the fermentation medium to be alkaline, and carrying out biological fermentation to synthesize the SNAC, wherein the yeast is selected from one of candida tropicalis, candida maltose and yarrowia lipolytica. According to the method, a biological method and a chemical method are organically fused, respective advantages of the biological method and the chemical method are fully played, a brand new SNAC synthesis route mainly depending on microbial fermentation is innovatively developed, green synthesis of the SNAC is realized by utilizing a microbial cell factory, the synthesis route of the SNAC is greatly shortened, and the method has the advantages of cheap and easily available raw materials, lower cost, mild reaction conditions, high yield and the like. And the method has the advantages of low environmental pollution, high atom economy, green production and the like.

This invention discloses a method for producing high-quality nano-calcium carbonate from desulfurization ash, comprising the following steps: magnetic separation of the desulfurization ash; mixing the magnetically separated desulfurization ash with water to obtain a first desulfurization ash slurry; adding a mixed solution of sodium acetate and hydrochloric acid to the first desulfurization ash slurry, reacting to obtain a second desulfurization ash slurry with an acidic pH, and collecting the CO2 generated during the reaction; performing solid-liquid separation on the second desulfurization ash slurry to obtain the byproduct calcium sulfite and a mixed solution of calcium acetate and sodium chloride; adding sodium hydroxide to the mixed solution of calcium acetate and sodium chloride to adjust the pH to alkaline, and then performing solid-liquid separation to obtain metal hydroxide slag and a mixed solution of calcium acetate and sodium chloride; statically mixing the mixed solution of calcium acetate and sodium chloride with a sodium carbonate solution containing sodium tripolyphosphate using a peristaltic pump, and separating to obtain solid nano-calcium carbonate. This invention achieves the resource utilization of desulfurization ash and also prepares high-quality nano-calcium carbonate.

The invention discloses a chemical pipeline rust removal neutral cleaning agent and a use method thereof, and relates to the technical field of chemical equipment maintenance and cleaning, the cleaning agent is mainly composed of diammonium hydrogen citrate, ammonium hydrogen fluoride and the balance of water, the pH value of the cleaning agent is neutral, and the cleaning agent can be used for cleaning rust in a pH environment close to neutral. By means of chelation of diammonium hydrogen citrate and auxiliary activation of ammonium bifluoride, rust and scale on the inner wall of the pipeline are effectively removed, and the use method comprises a static soaking mode and a dynamic circulating cleaning mode which can be flexibly selected according to working conditions. According to the method, corrosion to various metal materials such as carbon steel, chromium molybdenum steel and stainless steel can be controlled at a very low level while a good rust removal effect is achieved, waste liquid obtained after cleaning is close to neutral and environmentally friendly, treatment is easy, and the method has the advantages of being high in safety, easy and convenient to operate and wide in applicability.

The present application relates to the field of adsorption materials, and discloses a hierarchical pore MOFs-based composite phase change material, a preparation method and application thereof.The MOFs-based composite phase change material comprises a hierarchical pore MOFs material having micropores, mesopores and macropores simultaneously, and a phase change material loaded in the macropore channels of the hierarchical pore MOFs material.The hierarchical pore MOFs-based composite phase change material prepared by the present application has a higher specific surface area and pore volume, and has a certain number of micropores, mesopores and macropores respectively, and the functions of the pore channels of different sizes are fully developed.In the process of adsorbing VOCs in micropores, the mesopores are beneficial to the mass transfer of rapid adsorption of the adsorbate, the adsorption rate is improved, and the phase change material in the macropores can store adsorption heat to inhibit the bed temperature rise and improve the bed adsorption efficiency.

The application belongs to the technical field of food processing, and particularly relates to high-purity resistant starch concentrate and a preparation method thereof. Low-purity resistant starch ultrafine powder with a dry basis resistant starch content of 30% to 35% is used as raw material, and after being slurried, the raw material is subjected to double-enzyme hydrolysis of alpha-amylase and saccharifying enzyme to specifically remove digestible starch, dextrin and oligosaccharide in the raw material; then, the enzyme is inactivated, centrifugal separation and multiple water rinsing purification are performed, and high-purity resistant starch wet material with a dry basis resistant starch content of greater than or equal to 90% is obtained; after the wet material is proportionally mixed with water, high-pressure microjet homogenization treatment is performed to fully hydrate and disperse the particles, and finally, stable concentrate with a concentration of greater than or equal to 50% w / v is obtained. The purity of resistant starch is greatly improved, and the efficacy is significantly enhanced. The application uses low-cost low-purity resistant starch with a purity of about 30% as raw material, removes digestible starch, dextrin and oligosaccharide through double-enzyme hydrolysis with precise specificity, and combines physical rinsing and purification, so that the dry basis purity of resistant starch can be stably improved to more than 90%, and the physiological activity per unit weight is stronger.

The invention relates to the field of component processing, and discloses a wafer cutting and two-fluid cleaning integrated device, which comprises chain type traction pieces positioned on opposite racks and used for providing reciprocating traction force in a closed loop state; the bearing reciprocating mechanism is located on the oppositely-arranged machine frame and matched with the inner side guide bars of the oppositely-arranged center guide frame and the chain type traction piece to provide a bearing platform for cutting and cleaning of the wafer. The linkage cutting mechanism is located on the oppositely-arranged machine frame and matched with a top shaft of the oppositely-arranged machine frame, the limiting sliding rail and a pushing shaft of the traction material bearing table to be used for following the bearing reciprocating mechanism for bearing the wafer to move and conduct cutting. Through a closed-loop guide rail and a chain type traction system, the bearing reciprocating mechanism automatically and circularly runs, and the whole process of cutting, cleaning and resetting can be completed without manual intervention. The multiple bearing mechanisms are distributed at equal intervals, the productivity can be improved by multiple times, dependence on operators is reduced through full-automatic operation, the production rhythm can be flexibly controlled, and different batch order requirements can be met.

The invention provides a hydrophobic deep-eutectic solvent as well as a preparation method and application thereof, and belongs to the field of analytical chemistry. The hydrophobic deep-eutectic solvent is composed of a hydrogen bond acceptor and a hydrogen bond donor according to the molar ratio of 1: 1-2: 1, the hydrogen bond acceptor is selected from one of decanoic acid and lauric acid, the hydrogen bond donor is 2-hexyl-1-decanol, and the preparation method of the hydrophobic deep-eutectic solvent comprises the steps that the hydrogen bond acceptor and the hydrogen bond donor are mixed according to the molar ratio of 1: 1-2: 1 and stirred at the temperature of 90-100 DEG C, and the hydrophobic deep-eutectic solvent is obtained. The mixture is stirred until homogeneous liquid is formed, and the hydrophobic deep-eutectic solvent is obtained. According to the hydrophobic deep-eutectic solvent and the preparation method and application thereof, the problems that an existing absorbent for alkane VOCs treatment is low in absorption efficiency, poor in regeneration performance, poor in environmental protection property and insufficient in industrial adaptability can be solved.

The invention discloses a preparation method of a two-dimensional amorphous metal oxide material, which comprises the following steps: S1, adding an inorganic salt into a precursor solution of an organic solvent and a metal salt, and stirring to obtain a solid-liquid mixed phase; s2, drying the mixed phase to obtain solid powder; and S3, calcining the solid powder, and carrying out centrifugal washing to obtain the two-dimensional amorphous metal oxide. According to the preparation method disclosed by the invention, the synthesis of a series of ultrathin two-dimensional amorphous metal oxides is realized by utilizing the charge density of metal ions and anchoring of a hard template. The preparation method is simple and easy to implement, high in efficiency, high in universality and low in price, and has the potential of industrial production.

The application belongs to the technical field of optical imaging, and particularly relates to a small-F-number long-waveband infrared imaging optical system, which comprises an aperture plane, a first lens, a second lens, a third lens and an image plane; the first lens is a positive lens made of IRG206 material, and the second surface thereof is an aspheric surface; the second lens is a negative lens made of ZNS_IR material; and the third lens is a positive lens made of IRG204 material; the application adopts a 3-lens structure, has low material cost, high system transmittance, long detection distance, small relative aperture and F number=1; and expensive germanium material is replaced by low-cost materials such as zinc sulfide (ZNS_IR) and chalcogenide glass (IRG206), so that the application has the advantages of cost and mass production.

This invention belongs to the field of SNAC (sodium 8-(2-hydroxybenzamido)octanoate) synthesis technology, and particularly relates to a method for biosynthesizing SNAC, comprising the following steps: inoculating yeast into a fermentation medium, adding 2-hydroxy-N-octylbenzamide and a salting agent, controlling the pH of the fermentation medium to be alkaline, and carrying out bio-fermentation to synthesize the SNAC; wherein the yeast is selected from one of *Candida tropicalis*, *Candida maltose*, and *Yarrowia lipolyticis*. This invention organically integrates biological and chemical methods, giving full play to the advantages of both, and innovatively opens up a completely new SNAC synthesis route mainly relying on microbial fermentation. It utilizes microbial cell factories to achieve green synthesis of SNAC, which is beneficial for significantly shortening the SNAC synthesis route. It has advantages such as inexpensive and readily available raw materials, low cost, mild reaction conditions, minimal environmental pollution, high atom economy, and green production.

The invention relates to the technical field of medicines, in particular to a pharmaceutical composition of a paclitaxel conjugate, which comprises paclitaxel, a paclitaxel analogue or a conjugate thereof, an organic solvent; a solubilizer; and, a pH regulator. The conjugate is ANG1005, the solubilizer comprises mPEG-DSPE, in the mPEG-DSPE, the molecular weight of PEG is 500-10000, the molecular weight of PEG is 500-10000, and in the mPEG-DSPE, the molecular weight of PEG is 500-1000. The weight ratio of the mPEG-DSPE to the ANG1005 is (3 to 15): 1. According to the preparation method, the active substance solution and the solubilizer solution are prepared respectively, and then the two solutions are mixed together, so that the prepared solution is good in physical stability. When the ANG1005 freeze-drying agent prepared by the invention is redissolved, only normal saline is needed as a redissolving agent, the clarification of the redissolving solution can be realized within 5 minutes, and the clinical use is more convenient; the osmotic pressure of the freeze-drying agent after redissolution is lower than that of an ANG1005 freeze-drying agent in the prior art; meanwhile, in the in-vivo metabolism process of the freeze-drying agent (redissolving solution), ANG1005 is higher in chemical stability and not prone to hydrolysis, paclitaxel released in blood is less, and side effects on the human body are smaller.