Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

737results about How to "Reduce concentration" patented technology

Method for in vitro slow release performance evaluation of slow and controlled release preparation based on overflow principle

The invention discloses a method for in vitro slow release performance evaluation of a slow and controlled release preparation based on the overflow principle. A container with an upper outlet and a lower outlet is adopted to serve as a release tank, a to-be-detected medicine and a dissolution medium are placed in the release tank, a stirring device is adopted in the release tank to perform stirring, and the dissolution medium is added from the lower outlet of the release tank through a peristaltic pump; the dissolution medium dissolved with the medicine is taken away through the overflow from the upper outlet so as to offset medicine absorption or metabolism, and the slow and controlled release speed of the medicine, the total medicine overflow quantity and the total release amount are calculated by measuring the concentration of the medicine contained in the dissolution medium flowing out, the volume of the release tank and the overflow quantity. According to the method, the releasing degree of the slow and controlled release medicine can be evaluated accurately, the effective medicine release time of the slow and controlled release preparation is evaluated, and slow release performances of the slow and controlled release preparation are evaluated comprehensively.
Owner:CHONGQING UNIV OF TECH

Sulfur-manganese composite autotrophic denitrification filler as well as preparation method and application thereof

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.
Owner:NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST +1

Method for producing pullulan by aureobasidium pullulans

The invention provides a method for producing pullulan by aureobasidium pullulans, which is characterized in that a microbial conversion method is adopted for the first time, and pullulan is produced by catalyzing conversion of fructooligosaccharide through an enzyme reaction liquid, and the pullulan is produced by taking an aureobasidium pullulans seed culture solution as a carrier, fructooligosaccharide as a substrate and the enzyme reaction liquid as a catalyst. In a 5.0 L biological reaction container, a mode of one-time substrate addition or multiple feeding of fructooligosaccharide and enzyme reaction liquid is adopted, catalytic reaction is performed for 60-72 hr, 61.43 g / L-71.43 g / L of fructooligosaccharide is consumed together, the highest yield of pullulan is 60.2 g / L-64.26 g / L, and the conversion rate of fructooligosaccharide is up to 87.5%-97.98%. Compared with the existing method for producing the pullulan by a fermentation method, the biotransformation method can solve the problem of insufficient enzyme amount of catalytic reaction depended in the pullulan synthesis process on one hand, and also can solve the problem of reverse regulation of the substrate and the product on pullulan synthesis in the pullulan synthesis process on the other hand; and the problems of low substrate carbon source utilization rate, low substrate conversion rate and the like caused thereby are solved.
Owner:BEIJING EPSILON BIOTECHNOLOGY CO LTD

Sewage sludge advanced treatment device

The invention discloses a sewage sludge advanced treatment device, which belongs to the technical field of sludge treatment, and comprises a flocculation basin and a dehydration device, a concentration adjusting tank is arranged between the flocculation basin and the dehydration device, the inside of the tank is divided into a high-concentration area and a low-concentration area through a filter plate, the high-concentration area is provided with a first liquid inlet pipe, and the low-concentration area is provided with a second liquid inlet pipe; flowing into a dehydration device through a mixing pump; the filter plate is controlled by a driving mechanism to move so as to change the volume of the high-concentration area, and a first concentration detector is mounted on the first liquid inlet pipe and is used for moving the filter plate to reduce the volume of the high-concentration area when the first concentration detector detects that the concentration is lower than a threshold value; a control valve is installed on the second liquid inlet pipe and used for opening the control valve when the first concentration detector detects that the concentration is larger than the threshold value. The concentration regulating tank is arranged between the flocculation tank and the dehydration device to regulate the concentration of the sludge, so that the concentration of the sludge input into the dehydration device is stable, and the qualified rate of sludge caking is ensured.
Owner:HAIKOU SHENWEI ENVIRONMENTAL SERVICE CO LTD

Dissimilar metal power modulation galvanometer laser welding method

The invention belongs to the technical field of welding, and discloses a dissimilar metal power modulation galvanometer laser welding method which comprises the following steps: finely cleaning a 6061 aluminum alloy and a 304 stainless steel plate by using acetone, and then airing for more than 20 minutes; the aluminum steel sheet is assembled, pressed and fixed on a welding test platform in a steel-up-aluminum-down mode; the position of the welding test platform is adjusted, argon serves as welding protection gas, and a protection gas nozzle is arranged to be aligned with a welding pool area; laser welding parameters are set, a laser power modulation mode is set to be a gradient power mode, and the gradient power mode is to regulate and control phase point laser power in a circular scanning track in the advancing direction of a welding seam; a welding test is carried out in the mode that a galvanometer laser head is fixed and a welding test platform is moved, and a laser and the welding test platform are synchronously started and stopped; and the protective gas is started 5 seconds before the laser is started, and after the laser is stopped, the protective gas is stopped lagging for 10 seconds so as to continuously protect the welding seam and prevent oxidation.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Equipment for spraying and plastic spraying of sheet metal part and technological method of equipment

The invention relates to the technical field of metal surface treatment, and discloses sheet metal part spraying and plastic spraying equipment and a technological method.The sheet metal part spraying and plastic spraying equipment comprises a spraying chamber and a conveying mechanism, the spraying chamber is arranged in the middle of the conveying mechanism, and a material distributing plate is installed at the top of the spraying chamber; two spraying mechanisms are arranged on the side, close to the material distributing plate, of the interior of the spraying chamber, a plurality of evenly-distributed spraying guns are arranged in the two spraying mechanisms, an air pressure tank and a conveying pipe are installed on the side, close to the material distributing plate, of each spraying gun, and a pump body is installed on the side, away from the spraying guns, of each conveying pipe; and a paint storage tank is arranged on the rear side of the spraying chamber. The position and the angle of the spraying gun are accurately controlled, and the automatic adjusting device is utilized, so that the spraying gun can be dynamically adjusted according to the surface shape and the size of the sheet metal part, and all corners of a workpiece are uniformly and comprehensively covered with paint.
Owner:SHANGHAI HUSEN HARDWARE MASCH CO LTD

A rotary counter-hedge industrial waste gas desulfurization system and process thereof

The invention discloses a rotary counter-hedge industrial waste gas desulfurization system and a process thereof, comprising a reaction cylinder, wherein a top cover is fixedly connected to the top of the reaction cylinder, and an air inlet pipe is arranged on one side of the top cover; the rotary stirring action of the transmission blades is helpful to maintain the uniform distribution and flow state of the gas-liquid two phases in the mixing cylinder, which can accelerate the material diffusion and mass transfer process, and can increase the gas-liquid contact surface, thereby improving the efficiency of the desulfurization reaction; at the same time, the dirt, sediment and residue on the inner wall surface of the reaction cylinder and the mixing cylinder are cleaned by a soft scraper and a cleaning brush, thereby reducing the obstruction of the dirt to the gas-liquid reaction, allowing the gas and liquid to flow and mix more smoothly, thereby improving the desulfurization efficiency of the equipment, and the continuously rotating nozzle can make the reaction liquid spray into the waste gas in a more uniform and wider manner, thereby increasing the contact area of ​​the gas-liquid two phases, thereby accelerating the mixing effect between the waste gas and the reaction liquid.
Owner:WANNIAN COUNTY WEIMING ENVIRONMENTAL PROTECTION ENERGY CO LTD

Double-layer microcapsule structure flame retardant, flame-retardant polyurethane material as well as preparation method and application of flame-retardant polyurethane material

The invention discloses a flame retardant with a double-layer microcapsule structure, a flame-retardant polyurethane material as well as a preparation method and application of the flame-retardant polyurethane material, and belongs to the technical field of flame retardants. The material is a multifunctional flame retardant with a double-layer core-shell structure, a shell layer is calixarene boric acid resin, a middle shell layer is melamine phthalic anhydride resin, and a core layer is hydroxyapatite modified aluminum hypophosphite. Due to the high cross-linking degree between polymers, the flame retardance of polyurethane is improved, meanwhile, the mechanical property of the polyurethane is improved, and the flame retardance and seawater corrosion resistance of the material are synergistically enhanced through hydroxyapatite dispersed in the core layer. The double-shell layer has excellent hydrophobicity, prevents internal aluminum hypophosphite from being affected with damp and has anti-fouling and self-cleaning effects, and the prepared flame-retardant polyurethane composite material has excellent tensile and flexible characteristics due to a double network of hydrogen bonds and covalent bonds.
Owner:ZHONG YU HOSES TECH CO LTD +1

Carbon dioxide hydrogenation methanation-cracking carbon preparation series method

The invention discloses a carbon dioxide hydrogenation methanation-cracking carbon preparation series method, which comprises the following steps: generating CH4 through a reaction of # imgabs0 # imgabs1 #, and realizing the production of a carbon material by adopting the technologies of condensation separation of CH4 and water vapor, CH4 cracking reaction of # imgabs2 #, cyclic utilization of hydrogen and the like. The process is composed of a carbon dioxide hydrogenation methanation reactor and a methane cracking reactor. In the methanation reactor, CO2 and H2 react under a low-temperature condition to generate CH4 and water vapor; cH4 and water vapor are separated by adopting a compressor condensation separation technology, and the separated CH4 is conveyed to a cracking reactor. In the methane cracking reactor, CH4 is cracked at a high temperature to generate H2 and a carbon nanomaterial, and then H2 is returned to the methanation reactor again. The separation of CH4 and water vapor at a relatively low temperature is realized in the tandem carbonization process through a low-temperature condensation technology; through low-temperature CO2 methanation and CH4 catalytic cracking, the content of CO2 is reduced, a high-quality carbon nanomaterial is obtained, and cyclic utilization of CO2 and H2 is realized.
Owner:CENT SOUTH UNIV

Multi-stage pulping machine and cleaning device thereof

In order to achieve the purpose, the multi-stage pulping machine adopts the following technical scheme that the multi-stage pulping machine comprises a rack, an upper cover, a grinding device and a power part are installed on the rack, and a hopper is arranged on the upper cover. According to the multi-stage pulping machine and the cleaning device thereof, soybean milk liquid obtained after third-stage grinding and bean dregs obtained after first-stage grinding are mixed through the second residue-liquid mixing chamber and then fed into the second-stage grinding device, feeding liquid in the third-stage grinding device is purified water, but the bean dregs are bean dregs obtained after three-stage grinding, so that the soybean milk liquid and the bean dregs are mixed uniformly, and the cleaning efficiency is improved. After the soybean milk with the lower concentration is mixed with the bean dregs, grease adhered to the bean dregs after the first-stage grinding is reduced, so that the situation that the second-stage grinding effect of the bean dregs is influenced due to excessive grease adhered to the bean dregs is avoided; meanwhile, the soybean milk subjected to third-stage grinding can be concentrated to obtain soybean milk with higher nutritional ingredients, and the grinding effect is improved.
Owner:HUNAN SANLS AGRI MACHINE TOOLS MFR

Graphene oxide Janus nanosheet of metal-polyphenol network as well as preparation method and application of graphene oxide Janus nanosheet

The invention relates to the technical field of emulsion preparation, and discloses a metal-polyphenol network graphene oxide Janus nanosheet as well as a preparation method and application thereof, GO JNSs is taken as a solid emulsifier to encapsulate EOs, the problems that EOs are easy to volatilize and poor in water solubility at normal temperature can be solved, and the metal-polyphenol network graphene oxide Janus nanosheet and auxiliaries in a system can achieve a synergistic effect to resist bacteria. The Pickering emulsion containing GO JNSs has good emulsion stability, has excellent hydrophilicity and adhesion performance of polyphenol, can significantly enhance the wetting and spreading effects of emulsion droplets on leaf surfaces, and inhibits rebounding and splashing of the liquid droplets. The preparation process of the GO JNSs and the JNSs-EU-PE is simple, the process is environment-friendly, and the GO JNSs and the JNSs-EU-PE have industrial production prospects.
Owner:SHIHEZI UNIVERSITY

Electric welding equipment for battery production

The utility model belongs to the technical field of battery production, and particularly relates to battery production electric welding equipment which comprises a dust collecting box, a connecting pipe installed on the top side of the dust collecting box, a spray head installed on the outer wall of the connecting pipe, a conveying pipe connected to one side of the connecting pipe, a piston installed in the conveying pipe in a sliding mode, and a connecting rod fixedly connected to the bottom side of the piston. One end of the top side of the connecting pipe is connected with a water inlet pipe, the bottom end of the connecting rod is provided with a connecting plate, one side of the dust collecting box is provided with a telescopic rod, and during dust falling treatment, the telescopic rod is controlled to do telescopic motion and drives the connecting plate to move, and then the connecting rod drives the piston to slide up and down in the conveying pipe; when the piston slides downwards, water in the conveying pipe is pushed into the connecting pipe, then dust is sprayed out of the spray head, and when the piston slides downwards, the water enters the conveying pipe through the water inlet pipe, so that flying of smoke dust during welding is effectively reduced, the concentration of the smoke dust is reduced, and pollution to the production environment is reduced.
Owner:LIAONING XINCHI LITHIUM BATTERY TECH CO LTD

Treatment process of photovoltaic cell production wastewater

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.
Owner:JIANGSU BANGTEC ENVIRONMENTAL SCI TECH CO LTD

Mining wireless spray dust fall control method, equipment, medium and product

The invention relates to the technical field of coal mine dust fall, in particular to a mining wireless spraying dust fall control method and device, a medium and a product, and the method comprises the steps that key dust fall information analysis is carried out based on coal mine production information, and a key dust fall area and key dust fall time are determined; and then, carrying out timed spraying planning based on the key dust falling area and the key dust falling time, determining a spraying period, and controlling the spraying dust falling device to start spraying according to the spraying period. And then, emergency dust fall analysis is carried out based on the dust information, an emergency dust fall analysis result is determined, and when the emergency dust fall analysis result is that emergency dust fall is started, intelligent induction adjustment analysis is carried out based on the dust information and the wind power information, and the emergency spraying dust fall device is controlled to carry out emergency dust fall operation according to the emergency spraying information. Through intelligent induction and adjustment, the spraying and dust falling device can be started or adjusted in time according to the actual dust concentration, it is ensured that the dust concentration is rapidly reduced when the dust concentration exceeds the standard, and the dust falling effect is improved.
Owner:JINAN WOLVES TECH

Nano antibody for resisting salmonella enteritidis, kit and application of nano antibody

The invention discloses a nano antibody for resisting salmonella enteritidis, a kit and application of the nano antibody, and belongs to the technical field of genetic engineering. The nano-antibody comprises at least one of the following: A1) a nano-antibody containing amino acid sequences of a complementary determining region CDR1 as shown in SEQ ID NO: 1, a complementary determining region CDR2 as shown in SEQ ID NO: 2 and a complementary determining region CDR3 as shown in SEQ ID NO: 3; a2) a nano-antibody containing a complementary determining region CDR1 shown as SEQ ID NO.6, a complementary determining region CDR2 shown as SEQ ID NO.7 and a complementary determining region CDR3 shown as SEQ ID NO.8. The nano-antibody for resisting salmonella enteritidis provided by the invention is strong in affinity and good in specificity, so that the nano-antibody has a relatively good application prospect in detection of salmonella enteritidis.
Owner:SHANXI AGRI UNIV

Waste gas online monitoring system and method for garbage treatment

The invention belongs to the technical field of waste gas monitoring, and particularly relates to an online waste gas monitoring system and method for garbage disposal, the monitoring system comprises a sampling cylinder and a device top cover, the device top cover is mounted above a waste gas pipeline, the waste gas pipeline is used for releasing waste gas after garbage disposal, and a waste gas monitoring assembly is movably mounted in the sampling cylinder; a sampling adjusting module is installed in the sampling cylinder, a lifting module is installed between the sampling cylinder and the device top cover, a plurality of sensors in the sensor array are used for detecting the content and the type of waste gas pollutants at the top in the pipeline at the moment, and the waste gas monitoring assembly is moved to a deeper position of the pipeline through the lifting module; and the position of the waste gas monitoring assembly can be secondarily adjusted through the sampling adjusting module in the sampling barrel, so that the height of the waste gas monitoring assembly can be adjusted in the sampling barrel, and the position of the waste gas monitoring assembly in the pipeline is more accurate.
Owner:ZHANGJIAGANG JINZHOU REGENERATION ENERGY CO LTD

Irradiation crosslinking collagenous fiber material and preparation method and application thereof

ActiveCN119613775AUniform crosslinkingImprove mechanical propertiesPharmaceutical delivery mechanismProsthesisFiberLinking collagen
The invention provides an irradiation crosslinking collagen fiber material as well as a preparation method and application thereof, relates to the field of organic high-molecular compound processing and also relates to the technical field of medical materials. According to the preparation method of the irradiation cross-linked collagen fiber material, for the problem that protein is excessively and rapidly cross-linked in the irradiation process, the excitation rate of electron beams to water molecule free radicals is controlled by changing a solvent system of collagen fibers, introducing part of organic solvent and reducing the moisture content; therefore, the crosslinking degree of irradiation to the collagen material is controlled; furthermore, uniform crosslinking of the collagen fibers is realized by introducing a dispersing agent and controlling the irradiation dose, the irradiation temperature, the material thickness and other processes; and uniform plasmid is carried out on the collagenous fibers by a homogenizing process after irradiation, so that the injectability of the material is realized, and the physical and chemical properties and enzymolysis resistance of the obtained irradiation cross-linked collagenous fiber material are greatly improved.
Owner:ZHEJIANG UNIV +1

Preparation method and application of composite halogen-free flame-retardant polyester with high phosphorus content

The invention relates to the field of high polymer materials, and provides a preparation method and application of composite halogen-free high-phosphorus-content flame-retardant polyester aiming at the problems of non-uniform component dispersion and poor anti-dripping effect of the composite flame-retardant polyester. The preparation method comprises the following steps: mixing dihydric alcohol, terephthalic acid, a catalyst, esterification liquid of the reaction type phosphorus flame retardant and the reaction type nitrogen flame retardant, sequentially carrying out esterification reaction and polycondensation reaction to obtain a melt, and treating the melt to obtain the composite halogen-free high-phosphorus-content flame-retardant polyester. The invention also provides application of the flame-retardant polyester. According to the invention, the reactive phosphorus flame retardant participates in the polyester polymerization process, so that the influence on the molecular regularity of polyester is small, and the crystallization behavior and post-processing performance of slices are not influenced; the apparent viscosity of the polyester is improved by the modified nitrogen flame retardant, the polycondensation time is greatly shortened, and the polyester with lasting flame-retardant effect and good anti-dripping effect is obtained by compounding multiple halogen-free flame retardants.
Owner:ZHEJIANG HENGYI PETROCHEMICAL RES INST CO LTD

Indium titanium cerium niobium oxide ceramic target material, preparation method and application thereof, and transparent conductive oxide film

The invention belongs to the technical field of photovoltaic target materials, and particularly relates to an indium titanium cerium niobium oxide ceramic target material, a preparation method and application thereof, and a transparent conductive oxide film. The indium titanium cerium niobium oxide ceramic target material comprises the following components: indium oxide, titanium oxide, cerium oxide and niobium oxide, the mass ratio of indium oxide to titanium oxide to cerium oxide to niobium oxide is 97-99: 1-0.3: 1-0.3: 1-0.2, the transparent conductive oxide film has high density, high purity and high strength, and the transparent conductive oxide film prepared from the transparent conductive oxide film has high carrier mobility, high conductivity and high light transmittance.
Owner:FUJIAN ACETRON NEW MATERIALS CO LTD

Stress coordination type spiral steel pipe-cement soil combined pile

The utility model discloses a stress coordination type spiral steel pipe-cement soil combined pile which comprises a steel pipe, a steel ball, a steel ring cylinder, a spiral blade and a limiting assembly. The steel ring cylinder slidably sleeves the outer wall of the steel pipe; the spiral blade is mounted on the outer wall of the steel ring cylinder; the limiting assembly is installed on the steel pipe. The spiral blades are connected with the steel pipe in a sliding mode, loads are transmitted to the spiral blades on the lower portion in the load bearing process, stress is redistributed at the same time, the loads are evenly distributed, the problem of stress concentration at the connecting position of the spiral blades on the upper portion and the steel pipe is solved, the bearing performance is improved, and energy consumption is reduced.
Owner:FUJIAN JIEYU INTELLIGENT TECH CO LTD +1

Method for preparing caprolactone

The invention belongs to the technical field of chemical synthesis, and particularly relates to a method for preparing caprolactone, in particular to a method for continuously preparing caprolactone. The method comprises the following steps: (1) mixing a peroxy acid synthesis solution containing an acidic catalyst with a stabilizer which is a nitrogen-containing alkaline compound and has lone pair electrons on an N atom; and (2) respectively inputting cyclohexanone and the mixed solution obtained in the step (1) into a microreactor to carry out a first reaction, and then introducing a product obtained by the first reaction into a tubular reactor to carry out a second reaction. By adopting the method for preparing the caprolactone, the stability and safety of the reaction can be improved, meanwhile, the conversion rate of the cyclohexanone is increased, the conversion rate of the cyclohexanone is 99.5% or above, and the selectivity of the prepared caprolactone is gt; the content is 99.5%.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Water environment treatment material based on composite minerals and aquatic plants as well as preparation method and application of water environment treatment material

The invention discloses a water environment treatment material based on composite minerals and aquatic plants and a preparation method and application thereof, and belongs to the technical field of water environment treatment. The water environment treatment material comprises the composite minerals and the aquatic plants, the composite minerals can adsorb and convert heavy metal ions, ammonia nitrogen and organic pollutants, and by combining the absorption of the aquatic plants on nutrient substances and the decomposition effect of microorganisms on the pollutants, the concentration of the pollutants in a water body can be remarkably reduced, and the water quality index is improved; the problems of water eutrophication, heavy metal pollution, organic pollution and the like are effectively solved; the photosynthesis of the aquatic plants can absorb a large amount of carbon dioxide, carbon elements are transferred into the bottom mud for long-term storage, meanwhile, the existence of the complex minerals indirectly promotes the carbon sequestration effect of the aquatic plants, the carbon sequestration capacity of the whole water body ecological system is improved, and finally the multiple purposes of water body pollution treatment, bottom mud remediation, carbon sequestration and sink increase and the like are achieved. The health and the stability of a water body ecological system are improved.
Owner:UNIV OF CHINESE ACAD OF SCI

Coal mine underground gas dust comprehensive control device

The invention relates to the technical field of gas dust comprehensive prevention and control, in particular to a coal mine underground gas dust comprehensive prevention and control device. The air supply sleeve is arranged in the working roadway and communicated with the tail end of the air inducing pipe, and a plurality of air supply outlets are formed in the wall of the air supply sleeve; the water spraying sleeve is arranged in the working roadway and communicates with the air supply sleeve, and a plurality of water spraying channels are formed in the wall of the water spraying sleeve so as to spray water mist to the working roadway; the water conveying pipe is connected with the water spraying sleeve and used for supplying water to the water spraying sleeve. The rotating shaft is arranged in the air supply sleeve, the water spray sleeve and the water conveying pipe, and is provided with a plurality of power blades and spiral water supply blades; fresh air impacts the power blades so as to drive the rotating shaft and the spiral water conveying blades on the rotating shaft to rotate, and therefore water flow in the water conveying pipe is guided into the water spraying sleeve. The device is matched with an existing negative pressure ventilation system, ventilation and dust falling are conducted at the same time, and the accumulation risk of harmful gas and dust is reduced.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD

P-Ga2O3 / n-Ga2O3 pn junction diode and preparation method thereof

The invention discloses a p-Ga2O3 / n-Ga2O3pn junction diode and a preparation method thereof, and solves the problems that gallium oxide p-type doping is difficult, and a heterojunction diode is large in leakage current and low in withstand voltage. The gallium oxide homogeneous pn junction structure comprises cathode metal, a substrate and an n-type Ga2O3 epitaxial layer from bottom to top, a p-type NiO layer is arranged above the n-type Ga2O3 epitaxial layer, a p-type Ga2O3 material layer is arranged between the n-type Ga2O3 epitaxial layer and the p-type NiO layer, and a gallium oxide homogeneous pn junction is formed. The preparation method comprises the steps of epitaxial wafer cleaning, p-type Ga2O3 material layer preparation, cathode metal preparation, photoetching, p-type NiO film deposition, photoetching and anode metal preparation. N / P ion implantation is carried out on the upper portion of the gallium oxide epitaxial layer, Ga atoms in Ga2O3 are separated out and react again through high-temperature annealing to form the effective p-type characteristic, meanwhile, the effective p-type characteristic is combined with the p-type characteristic of p-type nickel oxide, p-type doping of gallium oxide is achieved through a simple process, the gallium oxide homogeneous pn junction is obtained, reliability is high, leakage current is small, and the gallium oxide homogeneous pn junction is suitable for large-scale production. The preparation method is used for preparing the p-Ga2O3 / n-Ga2O3pn junction diode with high voltage resistance.
Owner:GUANGZHOU INSTITUTE OF TECHNOLOY XIDIAN UNIVERSITY +1

Straw bale burning direct-fired semi-gasification biomass boiler

ActiveCN110986027BReduce intermediate processing linkslow running costSolid fuel combustionCombustion apparatus
The present invention discloses a direct-fired semi-gasification biomass boiler for straw bale burning, comprising: a boiler body, a straw drying and breaking chamber, and a chain grate; the boiler body comprises a boiler shell and a furnace, and the boiler shell is fixed to the top of the furnace; a rear arch, a front arch, a partition wall, etc. are fixed in the furnace and have a semi-gasification combustion chamber, a fixed carbon burnout chamber, and an enhanced combustion chamber; the chain grate is horizontally arranged at the bottom of the furnace and a plurality of air chambers are arranged below it along its conveying direction; the straw drying and breaking chamber is arranged in front of the feed port of the boiler body, and a straw breaking device is arranged inside it. The present invention solves the problem of direct-fired straw bale burning by arranging a straw breaking device; due to the use of a chain grate, continuous feeding and continuous slag discharge are possible; at the same time, the staged combustion of the semi-gasification combustion chamber, the fixed carbon burnout chamber, and the enhanced combustion chamber not only improves the combustion effect, but also produces a low concentration of nitrogen oxides, achieving the effect of energy saving and environmental protection.
Owner:HAILUN LIMIN ENERGY SAVING BOILER MFG

Bismuth ferrite-based energy storage ceramic with high entropy design as well as preparation method and application of bismuth ferrite-based energy storage ceramic

The invention relates to the technical field of dielectric energy storage device materials, in particular to high-entropy designed bismuth ferrite-based energy storage ceramic as well as a preparation method and application thereof, the chemical composition formula of the material is (0.7-x) Bi < 0.9 > (Sm < 0.5 > Gd < 0.5 >) < 0.1 > FeO < 3-0.3 > (Sr < 0.5 > Ba < 0.5 >) TiO < 3-x > NaNbO < 3-y > MnO < 2 >, the value range of x is 0-0.15, and the value range of y is 0-0.005. The relaxation ferroelectric material is designed by adopting a high-entropy strategy, and various elements occupy the same site of the material to generate lattice distortion, so that the relaxation characteristic of bismuth ferrite-based ceramic is promoted, and a ferroelectric hysteresis loop is optimized. The NaNbO3 anti-ferroelectric material is introduced, the long-range ferroelectric order is destroyed, the local random field is enhanced, and a low Pr value can be obtained. And in addition, the concentration of oxygen vacancies can be reduced by properly adding 0.5% mol of MnO2, so that the leakage current of the material is reduced, the energy storage efficiency is improved, and the material design not only enriches the application field of the high-entropy ceramic, but also provides a new thought for improving the performance of the energy storage ceramic.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY