20results about How to "Decrease the concentration gradient" patented technology

The invention discloses a micro-channel jet reactor. The micro-channel jet reactor comprises a sample introduction unit, a main mixing unit and a reaction unit which are sequentially communicated, the main mixing unit comprises a first inner pipe and a first outer pipe arranged outside the first inner pipe in a sleeving manner; a first annular space is formed between the first inner pipe and the first outer pipe; the sample introduction unit is communicated with the first inner pipe; a second sample inlet is formed in the first annular space, and a plurality of through holes are formed in the first inner pipe; the reaction unit comprises a second inner pipe and a second outer pipe arranged outside the second inner pipe in a sleeving manner; a second annular space is formed between the second inner pipe and the second outer pipe; the first inner pipe is communicated with the second inner pipe; during use, condensate is arranged in the second annular space. The reactor can effectively improve the mixing uniformity degree of reaction liquid, meanwhile, the reaction temperature is controlled, and the reaction rate and selectivity are ensured.

The invention discloses a sulfur-resistant carbon dioxide methanation catalyst as well as a preparation method and application thereof. A carrier of the catalyst comprises Al2O3 and ZrO2, a carrier modifier is nitrogen-doped mesoporous carbon and / or silicon carbide, active components comprise NiO and MoO3, auxiliaries comprise CeO2 and MnO2, and a coating is a Co-Zn coating. The content of Al2O3 is 10-70 wt%, the content of ZrO2 is 2-15 wt%, the content of the carrier modifier is 1-75 wt%, the content of the active component is 10-50 wt%, and the content of the auxiliary agent is 1-5 wt%. The catalyst is high in reaction efficiency, good in stability, high in selectivity and good in heat resistance; during use, different catalysts are filled in a layered manner, the temperature rise of a bed layer is mild, the hot-spot temperature is low, and a local high-temperature region is avoided, so that sulfur poisoning and sintering inactivation of the catalyst are avoided, the investment and operation cost is reduced, the service life of the catalyst is prolonged, and the operation safety of the device is improved.

A bipolar plate suitable for a trapezoidal liquid flow battery or a battery stack, the bipolar plate is a trapezoidal flat plate structure, and an isosceles trapezoidal area for contacting an electrode is provided in the middle of one side surface or two side surfaces of the plate; the electrolyte flows into the electrode area from the lower bottom side of the trapezoidal electrode area and then flows out from the upper bottom side of the trapezoidal area, the lower bottom side of the trapezoidal area flowing in is called the inlet side side of the electrode area, and the upper bottom side of the trapezoidal area flowing out is called the outlet side side of the electrode area; two groups of groove groups consisting of one or more quadrilateral grooves are respectively provided on the left and right waists of the trapezoidal electrode area toward the middle of the electrode area, which are called guide grooves, one of the two groove groups is arranged near the inlet side, and the other is arranged near the outlet side. By causing the electrolyte to flow directly from the middle of the inlet cross section to the vicinity of the outlet wall, the concentration of active substances in the outlet attachment is increased, thereby effectively reducing the concentration gradient of reactive active substances in the inlet and outlet directions and reducing polarization.

This invention relates to the field of traditional Chinese medicine processing, and discloses a compound polysaccharide immune-enhancing composition and its preparation method and application. The composition comprises raw materials made from refined Polygonatum sibiricum polysaccharide, refined Dendrobium officinale polysaccharide, refined Lycium barbarum polysaccharide, and mogroside. The polysaccharides are mixed, and mogroside is added in batches with stirring and homogenization. The mixture is then dried under low temperature vacuum and granulated to produce the finished product. Mogroside molecules penetrate into the polysaccharide aggregates and reconstruct hydrogen bonds, establishing steric hindrance and rearranging charge distribution, inhibiting secondary aggregation of polysaccharides during rehydration and improving dissolution rate. Combined with step-by-step feeding and controlled moisture content, the polysaccharide conformation is solidified, preventing moisture absorption and clumping during storage and maintaining the flowability of the finished product. Purification of the polysaccharides reduces steric hindrance interference from impurities such as proteins and lignin, allowing active binding sites to be fully exposed and bind to corresponding receptors on the surface of different immune cells, thus initiating signal transduction pathways.

The invention belongs to the technical field of dyeing devices, and discloses a dyeing device for regenerated polyester production and a using method thereof.The dyeing device comprises a dyeing box, a cross rod is installed at the top end of the dyeing box and connected with the dyeing box through a lifting assembly, and the bottom end of the cross rod is rotationally connected with a first hanging rod through a rotating assembly; a second hanging rod is arranged at the bottom end of the first hanging rod, a mixing assembly is arranged below the second hanging rod, the lifting assembly and the rotating assembly are arranged in a matched mode, after regenerated polyester is dyed, the first hanging rod and the second hanging rod move upwards and slide out of the dyeing box through starting of the first motor, and then the second motor is started to drive the first hanging rod to rotate; according to the spinning device for the regenerated polyester fibers, the regenerated polyester fibers are rotated, redundant dye liquor in the regenerated polyester fibers can be screwed out, the production efficiency and the product quality of the regenerated polyester fibers can be improved, the influence on the environment can be further reduced, and the win-win situation of economic benefits and environmental protection is achieved.

A capacitor includes a laminate and an external electrode on a surface thereof. The laminate has dielectric layers and internal electrode layers alternately laminated in multiple layers. The laminate also has an intermediate layer between the dielectric layers and the internal electrode layers, the intermediate layer containing a dielectric component of the dielectric layers and a conductive component of the internal electrode layers. The intermediate layer has a concentration gradient in which the concentration of the conductive component decreases from the internal electrode layers to the dielectric layers.

A bipolar plate suitable for rectangular liquid flow batteries or battery stacks, the bipolar plate is a rectangular flat plate structure, a rectangular area for contacting an electrode is provided in the middle of one side surface or two side surfaces of the plate, which is called the electrode area; the electrolyte flows into the electrode area from the rectangular lower side of the electrode area and then flows out from the rectangular upper side, the rectangular lower side for inflow is called the electrode area inlet side, and the rectangular upper side for outflow is called the electrode area outlet side; a group of grooves consisting of more than two trapezoidal grooves are provided on the rectangular left side and right side of the electrode area toward the middle of the electrode area, which are called trapezoidal flow guide grooves. The bipolar plate has a simple structure and is easy to process. By promoting the electrolyte to flow toward the left and right walls of the electrode area, the uniformity of electrolyte distribution is effectively improved, thereby alleviating the local effect and improving battery performance.

The invention relates to the technical field of lithium ion battery material production, in particular to a control method of a lithium ion battery ternary positive electrode material precursor production system, which comprises the following steps: S1, modeling fluid behaviors in a reactor by using simulation software; s2, the feeding rate of a feeding unit is adjusted in real time, and the concentration of ions in all the partitions is kept consistent; s3, dynamically adjusting the stirring speed and mode in the reactor; s4, adjusting the feeding rate in the step S2 and the stirring parameters in the step S3; s5, performing crystal nucleus homogenization induction; s6, precursor material particles are separated out step by step; and S7, carrying out drying treatment on the separated precursor material particles. According to the preparation method, through multi-dimensional dynamic regulation and control and accurate distribution control, the ion uniformity and the structural stability of the ternary positive electrode material precursor are remarkably improved, and a high-quality material basis is provided for a high-performance lithium ion battery.

The utility model provides a composite current collector, a pole piece, a new energy battery and an electric device. A membrane material of the composite current collector comprises a macromolecule base membrane layer, an active metal layer, a first conductive metal layer, a second conductive metal layer and an anti-oxidation protection layer, the molecules of the high-molecular base film layer only contain carbon atoms and hydrogen atoms, and the molecules of the active metal layer contain metal atoms; the active metal layer has a preset oxygen concentration and is used for oxidizing metal atoms of the active metal layer so as to react with atoms of the macromolecular base film layer; the active metal layer is suitable for adding carbon atoms and is used for increasing the carbon content adjacent to the first conductive metal layer; in the direction of the first conductive metal layer, the metal atom concentration of the active metal layer is gradually reduced in a gradient manner; the prepared active metal layer correspondingly improves the binding force of the macromolecule base film layer and the first conductive metal layer, so that the conductive metal layer is prevented from being torn off and delaminated; moreover, the arrangement in the active metal layer can be directly formed, and no additional process is needed.

This invention relates to the field of membrane separation process control technology, and provides a full-membrane method for concentrating and purifying iron phosphate by makeup water reuse regulation. The system includes a white material tank, a pre-concentration and washing unit, an intermediate white material storage tank, a washing and concentration unit, and a purified white material storage tank connected in sequence. It also includes a white material analysis module that uses solid content uniformity as a prerequisite check combined with conductivity distribution characteristics to determine the membrane inlet status into four types: normal material inlet, abnormal material flow, localized abnormal mixing, or overall high salt load. A membrane segment evaluation module assesses the effectiveness of makeup water using both desalination release degree and filtration impedance as dual indicators. Based on this, a tiered decision-making module determines the average makeup water strategy for the entire membrane segment or localized makeup water strategies and allocates makeup water to different membrane segments based on effectiveness. This system, through the coordinated control of accurate membrane inlet status identification and quantitative assessment of makeup water effectiveness, significantly reduces energy waste and concentration load caused by ineffective makeup water.

The embodiment of the invention discloses a method for preparing metal powder through gas short-distance flow reduction, which comprises the following steps: a plurality of reaction boats are sequentially and continuously arranged in a furnace tube of a continuous production device along the length direction of the furnace tube, and gas inlet parts and gas exhaust parts are respectively arranged on two sides of the reaction boats; one end of the gas inlet component is closed, the other end of the gas inlet component is communicated with a reaction gas source, and a plurality of first through holes at uniform intervals are formed in the side wall, close to the reaction boat, of the gas inlet component; the center positions of the first through holes are higher than the reaction boats, and one reaction boat at least corresponds to one first through hole; one end of the exhaust part is closed, the other end of the exhaust part is provided with an exhaust port, and the side wall, close to the reaction boat, of the exhaust part is provided with a plurality of second through holes at uniform intervals; the central positions of the second through holes are higher than the reaction boats, and one reaction boat at least corresponds to one second through hole; the first through hole corresponds to the second through hole in position; the flow distance of the reaction gas in the reaction zone above the materials is short, the chemical reaction conditions of other material reaction zones are not influenced, the concentration gradient of the generated gas is effectively reduced, the reaction rate is high, the product granularity is uniform, and the oxygen content is low.

The invention discloses a thermogravimetric analysis device and method for high-humidity multi-component atmosphere reaction kinetics research, and belongs to the technical field of thermogravimetric analysis instruments.The device comprises a reaction module, a heating furnace, a weighing module, a gas distribution module and an analysis module; the reaction module is vertically arranged in the heating furnace, the core is a reaction pipe main body with an open lower part, and the side surface is connected with a gas inlet pipe and a sampling pipe from top to bottom; the weighing module is located below the reaction module and comprises a weighing balance, a water cooling unit and a weighing supporting rod, and the water cooling unit can control a water vapor condensation area and stabilize the temperature of the balance; the gas distribution module can provide a multi-component reaction atmosphere containing water vapor with controllable concentration; the analysis module can detect tail gas components in real time. The device can realize low gas-solid mass transfer resistance, high-humidity environment stable control, wide-particle-size sample measurement and rapid heating and cooling, and is suitable for high-humidity multi-component atmosphere gas-solid reaction kinetic research in the fields of combustion, catalysis, adsorption and the like.

A method for extracting and purifying mucin from the digestive tract of an animal, the present invention relates to a method for extracting and purifying mucin. The present invention solves the problem that the existing methods for extracting and purifying mucin from the digestive tract of an animal cannot achieve the best effect. Method: solution preparation, obtaining mucus samples, extraction and preparation of crude mucus extracts, and mucin extraction and purification. The present invention prolongs the incubation time of cysteine ​​protease inhibitors, and then ensures the freshness and activity of the extracted protein as much as possible under the condition of reducing the concentration gradient of cysteine ​​protease inhibitors, achieving an effect consistent with the protein extraction concentration. The present invention reduces the speed of centrifugation, thereby reducing the difficulty of extraction in terms of instrument selection and operability. The method of the present invention ensures the freshness of the protein, and the electrophoresis detection results show that there is no tailing phenomenon, the extraction effect is good, and the extraction purity is high.

The invention belongs to the technical field of laminated composite materials, and particularly relates to a Ti3Al-TiAl laminated composite material and a preparation method and application thereof. According to the method, the forged Ti3Al alloy and the forged TiAl alloy serve as raw materials, the Ti3Al-TiAl laminated composite material is prepared through the vacuum hot pressing and sheath hot rolling method, the room-temperature ductility and toughness of the composite material are improved, the high high-temperature performance (yield strength and tensile strength) of the composite material is kept, the size of the obtained Ti3Al-TiAl laminated composite material is (200-1000) mm * (80-500) mm * (1-5) mm, the room-temperature tensile strength reaches 900-1100 MPa, and the tensile strength of the obtained Ti3Al-TiAl laminated composite material reaches 90-100 MPa. The room temperature plasticity is 3%-6%, the fracture toughness is 35 MPa.m < 1 / 2 >-50 MPa.m < 1 / 2 >, the tensile strength at 800 DEG C can reach 650-800 MPa, the yield strength at 800 DEG C can reach 600-700 MPa, and the plasticity at 800 DEG C is 20%-30%. And the large-size and large-batch production requirements are met, and good application prospects are achieved.

The invention belongs to the field of plasma immersion ion implantation, and specifically is a plasma immersion ion implantation integrated machine for alloys, comprising an operating table, a power supply module and a processing tank are fixedly installed on the top of the operating table, the power supply module is located on one side of the processing tank, the alloy product and the inner wall of the processing tank are energized through the power supply module, since the plasma is at zero potential and the sample is at negative potential, the positive ions in the plasma are injected into the target sample through the potential difference, so that a modified layer is attached to the surface of the alloy, and an ultrasonic vibration module is added, ultrasonic waves are introduced as an auxiliary in the oxidation process, and the ultrasonic cavitation effect generated by the ultrasonic waves is utilized, so that the electrolyte can fill the inside of the material through the pores, reduce the concentration gradient at the interface between the metal and the electrolyte solution, make the current distribution more uniform, prevent the excessive growth of the local oxide film, and thus improve the thickness uniformity and bonding strength of the micro-arc oxidation coating.

The application relates to the technical field of battery positive electrode materials, in particular to a synergistically modified high-voltage positive electrode material and a preparation method and application thereof, which comprises a bulk particle, a doped layer coated on the surface of the bulk particle and a coating layer coated on the surface of the doped layer; the bulk particle comprises lithium nickel cobalt manganese oxide; the doped layer is lithium nickel cobalt manganese oxide doped with fluorine elements in a bulk phase; and the coating layer comprises a lithium fluoride coating layer and lithium nickel cobalt manganese titanium oxide particles embedded in the lithium fluoride coating layer. The preparation method comprises the following steps: firstly, a nickel cobalt manganese hydroxide precursor is prepared by adopting a coprecipitation method; then, a doped layer and a coating layer are synthesized on the surface of the nickel cobalt manganese hydroxide precursor by adopting a solvothermal method; finally, calcination treatment is carried out to obtain the synergistically modified high-voltage positive electrode material. The synergistic modification strategy of bulk phase doping and surface coating effectively guarantees the stability of the interface and bulk structure, the preparation process is simple, and the electrochemical performance of the positive electrode material under high voltage, high cycle, high rate or high-temperature environment is improved.

A substrate processing device comprises: a liquid processing section, which includes a substrate holding section for holding a substrate horizontally and a liquid supply section for supplying a processing liquid to the substrate from above the substrate held by the substrate holding section; a liquid preparation section for preparing a processing liquid used in the liquid processing section; and a control section for controlling the liquid supply section and the liquid preparation section, wherein the control section controls the liquid supply section to set a supply speed of the processing liquid such that a flow rate in a vertical direction of the processing liquid from the liquid supply section toward the substrate is faster than a flow rate in a horizontal direction of the processing liquid flowing along the upper surface of the substrate.

The invention discloses a lithium ion battery lithium precipitation repair method and device, electronic equipment and a storage medium. The lithium ion battery lithium precipitation repair method comprises the following steps: under the condition that lithium precipitation detection equipment connected with a lithium ion battery sends out lithium precipitation information, obtaining current time and sending time of the lithium precipitation information; calculating interval duration according to the current time and the sending time; when the interval duration is less than or equal to the first preset duration, cutting off the charging current of the lithium ion battery, and standing the lithium ion battery for a second preset duration; and under the condition that the interval duration is larger than the first preset duration, the lithium ion battery is controlled to discharge at the rate within the preset rate range, and the rate within the preset rate range is larger than the rated charging rate of the lithium ion battery. According to the embodiment of the invention, precipitated lithium is effectively repaired, and the service life of the lithium ion battery is prolonged.

The invention provides a gel polymer electrolyte and a preparation method thereof, a lithium metal battery and an electronic product. The gel polymer electrolyte comprises a polymer, an aliphatic dinitrile solvent and a lithium salt in a mass ratio of (0.1-0.5): (0.5-0.9): (0.2-0.4); the molecular weight of the aliphatic dinitrile solvent is 20-200; the molecular weight of the polymer is 50,000 to 300,000; the polymer comprises one or more of polymethyl methacrylate, poly (butyl acrylate), poly (hydroxyethyl methacrylate) and poly (butyl methacrylate). The polymer captures solvent molecules through molecular interaction and improves a solvation structure, so that side reaction between lithium metal and aliphatic dinitrile solvents is prevented. The polymer can capture anions, improve the transference number of lithium ions, effectively slow down the concentration gradient between a negative electrode and a positive electrode, reduce the concentration polarization phenomenon, improve the conductivity of the lithium ions and improve the stability.

The invention discloses a methanation catalyst suitable for high-concentration carbon dioxide, which comprises the following components in percentage by mass: 12-85% of carrier, 1-75 wt% of carrier modifier, 10-50 wt% of active component NiO and 1-5 wt% of assistant, and the sum of the mass percentages of the components is 100%. The invention also provides a preparation method and application of the methanation catalyst suitable for high-concentration carbon dioxide. The invention provides a method suitable for methanation of high-concentration carbon dioxide, and provides a series of carbon dioxide methanation catalysts and a catalyst filling method which is simple in structure, high in reaction efficiency, mild in bed temperature rise, low in hot-spot temperature and capable of avoiding generation of a local high-temperature area. Therefore, the problems of sintering inactivation of the catalyst, low hydrothermal stability, short service life of the catalyst, poor operation safety of the device and the like are solved.