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33results about How to "High technical feasibility" patented technology
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Progressive ophthalmic lens
ActiveUS20140016088A1Easy to manufactureMaintain optical qualityEye diagnosticsOptical partsOptometryNear vision
Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10−1 mm−1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); —a cylinder gradient normalized value of less than 1.45 mm−1 at any point in the central portion of the lens.
Owner:ESSILOR INT CIE GEN DOPTIQUE
Wing with self-adaptive variable camber trailing edge
The invention discloses a wing with a self-adaptive variable camber trailing edge. The wing comprises a main wing, a rear beam and a variable camber trailing edge section, wherein the variable camber trailing edge section is connected with the main wing through the rear beam; the variable camber trailing edge section comprises an upper surface skin and a lower surface skin; the first end of the upper surface skin and the first end of the lower surface skin are respectively connected with the rear beam; the other end of the upper surface skin and the other end of the lower surface skin are connected through a rigid trailing edge; the parts, close to the rigid trailing edge, of the upper surface skin and the other end of the lower surface skin, are connected through a sliding mechanism; the sliding mechanism is connected with the rear beam through a shape memory driving part. By adopting the technical scheme, compared with a conventional similar wing, the wing with the self-adaptive variable camber trailing edge has the advantages of simple structure, light weight, low research and manufacturing cost, high flying performance and the like, the aerodynamic performance of an aircraft is greatly improved, the aerodynamic efficiency of the aircraft is improved, the oil consumption is reduced, and the use cost of the aircraft in the whole service life is lowered.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Method and device for treating and recycling copper-containing acid wastewater of mines
ActiveCN107601779AReduce adverse effectsHigh technical feasibilityWaste water treatment from quariesWater contaminantsSludgeSulfate-reducing bacteria
The invention relates to a method and a device for treating and recycling copper-containing acid wastewater of mines. The method comprises the following steps: mixing two wastewaters, namely copper pit water and raffinate, in a certain volume proportion, so as to form mixed acid wastewater; carrying out fractional precipitation on valuable heavy metals in the mixed acid wastewater by virtue of a combined medicament, so as to reduce neutralizing residue and recycle copper; recycling copper in the acid wastewater through the synergic effect generated in a metabolic process of chemical precipitates and sulfate reducing bacteria; and preparing a compound fertilizer from organic sludge generated by virtue of a biochemical method, and reusing the compound fertilizer in the rehabilitation and afforesting of the mines. According to the device for implementing the method, hydrogen sulfide circulating and absorbing equipment is additionally arranged, a reaction device is optimized, and combinedfillers of a bioreactor are optimized, so that the conversion efficiency of sulfate reducing bacteria to SO4<2-> is increased, and the repeated cyclic utilization of hydrogen sulfide is realized. A process adopted in the method is environment-friendly and has good universality to working conditions of the mines, so that the method has the advantages that the recycling rate of copper in the acid wastewater is more than or equal to 92%, the reduction amount of the neutralizing residue is more than or equal to 70%, the storage capacity pressure of tailings can be effectively reduced, and the like.
Owner:ZIJIN MINING GROUP +1
Steel coating device and production method thereof
InactiveCN104451496AAvoid investmentImprove pollutionHot-dipping/immersion processesProduction lineOne-hot
The invention relates to the field of metallurgical pressure machining and coating, and provides a steel coating device and a production method of the steel coating device. Production of hot-rolled acid-pickling-free steel and coating steel of other varieties such as galvanized steel is achieved. The steel coating device comprises a reduction cooling device, a coating device and an after-coating cooling device. The hot-rolled acid-pickling-free steel with glass films can be produced through the coating device arranged on an outlet of a hot rolling finishing mill. The steel coating device has the advantages that technical feasibility is high, investment is low, and the effect is remarkable; the requirements of various industries are met; coating materials are cheap, easy to obtain and high in renewable utilization value; energy conservation and emission reduction of multiple industries can be promoted, and meanwhile sound development of downstream industries is driven; online and simultaneous production of the acid-pickling-free steel and the coating steel can be achieved on one hot rolling production line.
Owner:夏征
Energy storage type heating and cooling combined supply system combining solar heat collection and heat pump
ActiveCN107270580AGuaranteed continuous useEfficient use ofMechanical apparatusSolar heat devicesEngineeringEnergy storage
The invention relates to an energy storage type heating and cooling combined supply system combining solar heat collection and a heat pump. The energy storage type heating and cooling combined supply system combining solar heat collection and the heat pump comprises a heat pump module, a solar heat collection module and an energy storage module, wherein the heat pump module comprises a compressor, a first liquid cooling type heat exchanger, an expansion valve and a second liquid cooling type heat exchanger which are sequentially connected to be in circulation; the solar heat collection module comprises a solar heat collector, a heat exchanger and a water pump which are connected and form circulation; and the energy storage module comprises a heat storage unit and a cold storage unit. Compared with the prior art, the heat pump, solar heat collection and energy storage technologies with an energy-saving effect are compounded, and energy conservation can be achieved to an extremely large extent; electricity cost can be greatly reduced through utilization of valley electricity; and besides, the energy storage module and the heat pump module are organically combined, a main engine of a heat pump can normally operate at the relatively low environmental temperature, and adaptability of the heat pump is strengthened.
Owner:SHANGHAI JIAO TONG UNIV
Heat storage type air source heat pump water cooling and heating system and operation method thereof
ActiveCN105318466ALow costReduce selection capacityLighting and heating apparatusAir conditioning systemsEngineeringWater cooling
The invention provides a heat storage type air source heat pump water cooling and heating system and an operation method thereof, and belongs to the field of heat pump technologies and refrigerating air conditioners. The system comprises an outdoor source side, a heat pump host, a user side and a heat storage module. The outdoor source side comprises a refrigerating medium pump, an air cooling heat exchanger and source side valves. An outlet of the refrigerating medium pump is sequentially connected with the air cooling heat exchanger and the source side valves through pipelines and then returns to an inlet of the refrigerating medium pump through a first liquid cooling type heat exchanger of the heat pump host. A heat storage side mainly comprises a first valve, a second valve, a heat storage box, a third valve and a fourth valve. One side of the heat storage box is sequentially connected with the first valve and the source side valves on the source side through pipelines and then returns to the heat storage box through the second valve. The other side of the heat storage box is sequentially connected with the third valve and the user side valve on the user side through pipelines and then returns to the heat storage box through the fourth valve. By adopting the heat storage type air source heat pump water cooling and heating system, the capacity of a heat pump system supplying heat in winter can be greatly reduced, the primary investment is lowered, and the operation efficiency of the heat pump is improved.
Owner:TSINGHUA UNIV
Mountain talus landslide prediction method and device
The invention relates to a mountain talus landslide prediction method and device. The prediction method starts with the dynamic analysis of the formation condition, the deformation state and the influence degree of an inducing factor of landslide, integrally determines the development degree and the dangerousness of the landslide from a macroscopic view, analyzes the development tendency of the landslide, establishes a landslide prediction model according to the displacement data of the landslide on the basis of the development tendency, carries out landslide displacement diachronic analysis and judges landslide occurrence time. The prediction device comprises a data acquisition network unit, a GPS (Global Positioning System) network transmission unit and a wireless serial port data sharing network unit, wherein the data acquisition network unit 1 consists of a terminal acquisition node, a routing node and a coordination node. The prediction method of the invention can better determine the development state of the landslide, analyze the qualitative and quantitative possibility that the landslide generates severe sliding, and make accurate discrimination on the landslides under different development stages. The prediction device has the advantages of being simple in structure, convenient in layout and use, high in technical feasibility, long in endurance time and low in energy consumption.
Owner:LIAONING TECHNICAL UNIVERSITY
Method and device for allocating service operation
Owner:LETV HLDG BEIJING CO LTD +1
10kW-level space nuclear energy closed type Brayton cycle thermoelectric conversion system
ActiveCN112049692AHigh technical feasibilityStrong heat transferFrom solar energyPump componentsFlight vehicleBrayton cycle
The invention provides a 10kW-level space nuclear energy closed type Brayton cycle thermoelectric conversion system, which is applied to spacecraft power and and is used for converting heat energy generated by an isotope heat source into electric energy and providing electric power for loads such as an electric thruster. The power generation power of the 10kW-level space nuclear energy closed typeBrayton cycle thermoelectric conversion system provided by the invention is 10 kW; a working medium loop is designed according to a closed Brayton cycle; and a working medium is sequentially subjected to a thermodynamic process including adiabatic compression in an air compressor, constant-pressure heating with an isotope source as a heat source, adiabatic expansion in a turbine and constant-pressure cooling. According to the system, the physical properties of the used inert gas working medium are fully considered; the advantages of each component gas in the working medium gas in the aspectsof thermal conductivity, thermal capacity and the like are comprehensively utilized; and by a repeated iteration design, the system has the characteristics of compact layout, high conversion efficiency, high power density, high environmental adaptability and the like and is also suitable for a power system of an underwater vehicle.
Owner:BEIJING INST OF CONTROL ENG
Mouse optical signal process method and device
InactiveUS20060265530A1Improve precisionIncrease speedInput/output for user-computer interactionSolid-state devicesDigital dataRelative displacement
The present invention discloses a method and a device for processing optical signals in a computer mouse, which is related to electric digital data processing. The method is that the relative displacement vector between the mouse device and the illuminated object surface producing laser speckles is reflected by means of collecting movement information of laser speckle signals. The device for carrying out the method consists of a mouse body; inside said mouse body, an amplifying and shaping module, a direction identifying and counting module and a computer interface circuit for processing photoelectric signals are disposed and connected in sequence, characterized in that, said device further includes at least one laser device and a photo sensor for receiving laser speckle signals from the object surface illuminated by laser beams. Said photo sensor transfers the received photoelectric signals to the amplifying and shaping module. This invention has a simple structure, high technical feasibility and high precision.
Owner:SHENZHEN GOZLAB CO LTD
Method for Determining a Progressive Opthalmic Lens and a Set of Semi Finished Lens Blanks
ActiveUS20140354944A1Easy to manufactureImprove performance of lensSpectales/gogglesEye diagnosticsWork in processLens plate
Owner:ESSILOR INT CIE GEN DOPTIQUE
Residual vibration suppression system and method for industrial robot
ActiveCN114505844ALow technical costHigh technical feasibilityProgramme-controlled manipulatorTotal factory controlIndustrial EthernetResidual vibration
The invention discloses a residual vibration suppression system and method for an industrial robot, and the system comprises an embedded industrial control computer with a real-time control function, an acceleration sensor, an acceleration signal transmission device, the industrial robot, and a servo controller of the industrial robot. The acceleration sensor is installed at the tail end of the industrial robot through an acceleration sensor fixing element, collected acceleration signals are connected into a servo driver of the industrial robot through an acceleration signal transmission device, and the servo driver is connected with the embedded industrial personal computer through a gigabit industrial Ethernet interface. The residual vibration suppression system provided by the invention is relatively simple and relatively low in cost, the industrial robot control platform has a real-time function, and the residual vibration suppression method provided by the invention can further improve the smoothness of track operation and reduce the impact on the motor in the operation process while realizing the maximum suppression of the residual vibration, so that the reliability of the system is improved. And the contour precision of the interpolation track is ensured.
Owner:SOUTH CHINA UNIV OF TECH
Method and device for processing optical signals in computer mouse
InactiveUS7595478B2Improve precisionIncrease speedInput/output for user-computer interactionSolid-state devicesRelative displacementOptoelectronics
The present invention discloses a method and a device for processing optical signals in a computer mouse, which is related to electric digital data processing. The method is that the relative displacement vector between the mouse device and the illuminated object surface producing laser speckles is reflected by means of collecting movement information of laser speckle signals. The device for carrying out the method consists of a mouse body; inside said mouse body, an amplifying and shaping module, a direction identifying and counting module and a computer interface circuit for processing photoelectric signals are disposed and connected in sequence, characterized in that, said device further includes at least one laser device and a photo sensor for receiving laser speckle signals from the object surface illuminated by laser beams. Said photo sensor transfers the received photoelectric signals to the amplifying and shaping module. This invention has a simple structure, high technical feasibility and high precision.
Owner:SHENZHEN GOZLAB CO LTD
Crude fiber formation method of fiber reinforced composite material waste and reinforced concrete of fiber reinforced composite material waste
InactiveCN110563402AReduce generationHigh technical feasibilityElectrical discharge ozone preparationReinforced concreteFiber-reinforced composite
The invention provides a crude fiber formation method of fiber reinforced composite material waste and reinforced concrete of the fiber reinforced composite material waste. The crude fiber formation method of the composite material waste comprises the following steps: measuring the length, width and height of the composite material waste, and taking the maximum size of the length, width and heightof the composite material waste as a reference size; and then, selecting an appropriate cutting mode for cutting according to the reference size to treat the waste into crude fibers with a length ranging from 30 mm to 150 mm, a width ranging from 1 mm to 30 mm and a thickness ranging from 0.3 mm to 3 mm, wherein the cutting mode comprises rough cutting, middle cutting and fine cutting, and the fine cutting needs to be carried out in the extending direction of continuous fibers of middle-cut blocks. The composite material waste forming crude fibers is mixed with cement, coarse aggregate, fineaggregate and other components to prepare concrete with high strength and good toughness. The invention provides a technically feasible, economic and convenient way for recovery and recycling of composite material wastes, and has important significance for further promoting popularization and application of composite materials.
Owner:GUANGDONG UNIV OF TECH +2
Voiceprint-based verification method and device
InactiveCN110517695AGuaranteed exclusive accessImprove experienceSpeech recognitionUser verificationValidation methods
The invention discloses a voiceprint-based verification method and device. The voiceprint-based verification method comprises the following steps of collecting voice information of at least one user,and extracting voice characteristics of the users to be stored in a model library; randomly generating verification passwords for reading by the users to be verified, and acquiring reading voices; extracting the contents to be verified and the voice characteristics in the reading voices, verifying the contents to be verified and the voice characteristics according to the model library and the verification passwords, and obtaining verification results. The method is a voiceprint recognition method based on local off-line processing; the recognized contents at each time are randomly changed; andverification voice signals are subjected to living body detection, so that the security of user verification is greatly improved.
Owner:SHENZHEN STATE MICRO TECH CO LTD
Cable damage detection method and device based on laser slam and vision
InactiveCN112113605ALow production costHigh technical feasibilityMeasurement devicesInformation extractionEngineering
The invention aims to provide a cable damage detection method and device based on laser slab and vision. The method is characterized by comprising the steps of navigating and mapping the interior of acable pipeline through a Cartogrammer package, recording the temperature, magnetic field information and image information of a cable, and detecting a damaged point of the cable; accurately positioning the damaged point through a YoloV3 LA algorithm, and recording information in the form of a coordinate vector and a picture; and recording data in the maintenance process in a local hard disk, andfurther conducting information extraction after maintenance is completed. Due to the introduction of the Yolo v3 LA algorithm, compared with an existing rescue robot, the method and device are low inmanufacturing cost and high in technical implementation feasibility, and in the use process, an operator can remotely control the device to conduct overhaul patrol and obtain real-time data, and doesnot need to enter a pipeline by himself / herself.
Owner:GUANGDONG UNIV OF TECH
Integrated water purifier
InactiveCN107902705AEasy to handleHigh technical feasibilityWater/sewage treatment by centrifugal separationSpecific water treatment objectivesSludgeFiltration
The invention discloses an integrated water purifier. The integrated water purifier comprises a tank body. Both sides of the bottom of the tank body are each provided with a mud discharging pipe. Theupper end of each mud discharging pipe is provided with a water inlet pipe, the water inlet pipes communicate with cyclone reaction zones in the tank body, and the outlet ends of the cyclone reactionzones communicate with a suspension clarifying zone and a mud discharging hopper, respectively. The outlet end of the suspension clarifying zone communicates with an inclined-pipe sedimentation zone,the inclined-pipe sedimentation zone communicates with a filter chamber via a water weir, and the outlet end of the filter chamber communicates with a water outlet zone. The integrated water purifieris a type of high-turbidity large-capacity water treatment equipment organically combining pipeline mixing, a cyclone reaction, suspension clarification, sludge concentration and inclined-pipe sedimentation, and all operation units are arranged vertically, the occupied land area is small, the investment cost is low, and the integrated water purifier have unmatched effects compared with other equipment of the same type on the aspects of the functions of clarification, sedimentation, filtration, sludge concentration, automatic sludge discharge and the like through the reasonable arrangement.
Owner:新疆水处理工程技术研究中心有限公司
Three-dimensional continuous loading and unloading operation system and method for directly taking container vehicles and ships
PendingCN112850230AHigh technical feasibilityAvoid the height difference problem of flippingLoading/unloadingConveyor partsFront edgeTruck
The invention relates to a three-dimensional continuous loading and unloading operation system and method for container vehicle and ship direct taking. The system comprises a port wharf and a first crane which is used for loading and unloading containers on a ship on the shore, wherein at least one railway loading and unloading line parallel to a shoreline and a second crane for loading and unloading containers on the railway loading and unloading line are arranged on the land side of the first crane; a third crane is arranged between the sea side of the second crane and the land side of the first crane; a transfer platform or / and a transfer storage yard are arranged between the first crane and the third crane; and a handover storage yard is arranged between the third crane and the second crane. According to the three-dimensional continuous loading and unloading operation system and method for container vehicle and ship direct taking provided by the invention, under the condition that the elevation of a railway station is far higher than the elevation of a port and a storage yard in front of the front edge of a wharf due to limitation of special terrains and site conditions, the system and the method can meet the requirements of existing water-public combined transportation, railway-public combined transportation and container truck operation system processes in the port, and meanwhile, can implement the vehicle-ship direct taking continuous operation process of rail-water combined transportation, so that high-efficiency seamless connection of the rail-water combined transportation in a real sense is realized.
Owner:中铁武汉勘察设计院有限公司
Method for determining a progressive opthalmic lens and a set of semi finished lens blanks
ActiveUS9618771B2Easy to manufactureImprove performanceSpectales/gogglesOptical partsOphthalmologyEye lens
Owner:ESSILOR INT CIE GEN DOPTIQUE
Photothermal enhanced photosensitizer based on black phosphorus, and preparation method and application thereof
InactiveCN112076317AEnhanced specific accumulationEnhanced smart tracking capabilitiesPhotodynamic therapyEchographic/ultrasound-imaging preparationsPhotosensitizerPolyethylene glycol
The invention provides a photothermal enhanced photosensitizer based on black phosphorus. The simple structure formula of the photothermal enhanced photosensitizer based on black phosphorus is POM@PEG@BP; POM is polyoxometallate; PEG is a polyethylene glycol chain; BP is a black phosphorus nanosheet; one end of the polyethylene glycol chain is connected with the black phosphorus nanosheet; and theother end of the polyethylene glycol chain is connected with the polyoxometallate. The invention provides a preparation method and application of the photothermal enhanced photosensitizer based on black phosphorus. The photothermal enhanced photosensitizer based on black phosphorus in the invention is a powerful and intelligent photosensitizer; and the photosensitizer has the effects of automatically identifying tumour and non-tumour cells, automatically assembling, enhancing the light absorption capability and enhancing the photothermal performance and specific accumulation of tumour parts,and also has relatively high biological imaging capability and intelligent tumour cell tracking capability.
Owner:SHENZHEN HANGUANG TECH CO LTD
Progressive ophthalmic lens
Disclosed is a progressive ophthalmic lens including a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value and a cylinder value, the front surface of the lens including: —a far vision zone having a far vision reference point; —a near vision zone having a near vision reference point; —a main meridian, wherein the front surface is regressive and has: —a sphere gradient normalized value of less than 7.50·10−1 mm−1 at any point in a central portion of the lens including a portion of the main meridian (32), the far vision reference point (FV) and the near vision reference point (NV); —a cylinder gradient normalized value of less than 1.45 mm−1 at any point in the central portion of the lens.
Owner:ESSILOR INT CIE GEN DOPTIQUE
A solution spray type frost-free air source heat pump device
ActiveCN103940164BLower dew point temperatureImprove reliabilityHeat pumpsCorrosion preventionFrostFour-way valve
The invention belongs to the field of heat pump technologies and refrigeration air conditioners, and relates to a solution spraying type frostless air source heat pump device. The device comprises a compressor, a four-way valve, an indoor heat exchanger, a first expansion valve, an outdoor heat exchange unit and a control unit. A heat exchanger in the outdoor heat exchange unit comprises a spraying type heat exchanger body, a second expansion valve and a finned heat exchanger body, and outdoor air firstly passes through the spraying type heat exchanger body and then passes through the finned heat exchanger body. In the heating process, refrigerating fluid from the first expansion valve flows through the spraying type heat exchanger body, the second expansion valve and the finned heat exchanger body in sequence and flows to an air suction opening of the compressor. In the refrigeration process, the refrigerating fluid discharged out of the compressor flows through the finned heat exchanger body, the second expansion valve and the spraying type heat exchanger body in sequence and then flows to the first expansion valve. Through the adjustment of the opening states of the first expansion valve and the second expansion valve, the heat pump device has the advantages that the outdoor heat exchange unit operates without frost in the heating process, the heating performance is stable, the regeneration power consumption is low, and the refrigeration operating performance in summer is improved.
Owner:TSINGHUA UNIV
A kind of coated steel equipment and production method thereof
InactiveCN104451496BAvoid investmentImprove pollutionHot-dipping/immersion processesMachiningManufacturing line
The invention relates to the field of metallurgical pressure machining and coating, and provides a steel coating device and a production method of the steel coating device. Production of hot-rolled acid-pickling-free steel and coating steel of other varieties such as galvanized steel is achieved. The steel coating device comprises a reduction cooling device, a coating device and an after-coating cooling device. The hot-rolled acid-pickling-free steel with glass films can be produced through the coating device arranged on an outlet of a hot rolling finishing mill. The steel coating device has the advantages that technical feasibility is high, investment is low, and the effect is remarkable; the requirements of various industries are met; coating materials are cheap, easy to obtain and high in renewable utilization value; energy conservation and emission reduction of multiple industries can be promoted, and meanwhile sound development of downstream industries is driven; online and simultaneous production of the acid-pickling-free steel and the coating steel can be achieved on one hot rolling production line.
Owner:夏征
Comprehensive energy system and method for combined development and utilization of various resources in deep and far sea
ActiveCN114597953AReduce development costsHigh technical feasibilityCellsSolar heating energyElectrolysisIntegrated energy system
The invention provides a comprehensive energy system and method for combined development and utilization of various resources in deep and far sea. The comprehensive energy system comprises an offshore energy processing platform, an offshore wind power plant, an offshore photoelectric field, an offshore photo-thermal field, a natural gas platform and a transport ship. The offshore energy treatment platform comprises a storage battery module, a water electrolysis hydrogen production module, an electrical module, a control module, a fresh water supply module, a heat supply module, a low-carbon power generation module and an organic liquid fuel synthesis module. According to the invention, an offshore energy treatment platform is arranged, and resources developed by an offshore wind power plant, an offshore photoelectric field, an offshore photo-thermal field and a natural gas platform can be organically combined. Through a collaborative development mode, various energy sources in ocean resource development are fully utilized, so that energy sources such as electric energy and natural gas developed from deep and far sea can be transported back to a land load center to be used, or fuel is provided for sailing ships, the resource development cost of the deep and far sea is reduced, and the technical feasibility is improved.
Owner:HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)
Phase calibration system and method for oscillating reflector
ActiveCN111751084AStrong beam directionFocusReflective surface testingTesting optical propertiesContinuous scanningScan line
The invention discloses a phase calibration system and method for an oscillating reflector. The method comprises steps of by utilizing reciprocating scanning symmetrical characteristics of simple harmonic oscillation motion of an oscillating reflector, constructing scanning pattern data with light and shade complementation of pixels; when a phase difference parameter applied by a scanning controller is consistent with the actual phase of the simple harmonic oscillation of the oscillation type reflector, accurately matching the light and shade complementary pattern data of the pixel with the reciprocating motion of the oscillation type reflector, so that a continuous scanning line with uniform brightness after perfect splicing is obtained on a projection plane, and the effects of clearness,recognizability, easiness in detection and convenience in calibration operation are achieved.
Owner:PERA
A kind of nano ferroferric oxide/graphene composite Fenton catalytic film and its preparation method and application
ActiveCN112657495BIncrease and stabilize membrane fluxEfficient degradationWater contaminantsCatalyst activation/preparationMicrofiltration membraneSelf-assembly
The invention provides a nanometer ferric oxide / graphene composite Fenton catalytic membrane and its preparation method and application. The method first uses a solvothermal method to prepare a composite of reduced graphene oxide nanosheets loaded with nanometer ferric oxide particles. The material is based on a microfiltration membrane, and a nano-ferric oxide / graphene composite Fenton catalytic membrane is prepared by a self-assembly method. The catalytic membrane can effectively activate hydrogen peroxide in water, and then realize the efficient removal of refractory organic pollutants in water. Compared with the homogeneous Fenton reaction and the heterogeneous Fenton reaction catalyzed by nanomaterials, the catalytic membrane will The strong oxidizing species and pollutants produced by the activation are confined in the nanoscale space formed between the nanosheets, and this nanoconfinement effect increases the reaction kinetic coefficient by two to three orders of magnitude. The nano ferric oxide / graphene composite Fenton catalytic membrane prepared by the invention has the advantages of high catalytic efficiency and stable membrane flux.
Owner:TONGJI UNIV
A heat storage type air source heat pump cold and hot water system and its operation method
ActiveCN105318466BLow costReduce selection capacityLighting and heating apparatusAir conditioning systemsPlate heat exchangerEngineering
Owner:TSINGHUA UNIV
A geared turbofan engine with a reversely installed core engine
InactiveCN106286010BReduce resistanceImprove propulsion efficiencyJet propulsion plantsNoise controlGear drive
The invention relates to an integrated design scheme of an aircraft engine, in particular to a gear drive turbofan engine with a reversely-mounted core machine. According to an existing aircraft layout, power is provided through the turbofan engine adopting a BLI technology, and by means of the layout, the higher requirements on the engine are required; and according to the high duct ratio, it is required that the engine is provided with the core machine which is smaller and more efficient, a huge fan is disproportionate to the small core machine, a high-pressure rotor system is matched with a low-pressure rotor system, and noise control becomes difficult. Therefore, the fan rotor systems are separated from the core machine, the core machine is reversely mounted, and the structural layout manner of the gear drive fan is adopted. By the adoption of the scheme, the gear drive turbofan engine has the beneficial effects that aerodynamic efficiency is high, the structure is simple and portable, the vibration level is low, maintainability is good, and the airworthiness requirements of advanced airliners / transport aircrafts in the future can be well met.
Owner:中航空天发动机研究院有限公司
Method and device for the treatment and recycling of copper-containing acidic wastewater from mines
ActiveCN107601779BReduce adverse effectsHigh technical feasibilityWaste water treatment from quariesWater contaminantsSludgeRaffinate
The invention relates to a method and a device for treating and recycling copper-containing acid wastewater of mines. The method comprises the following steps: mixing two wastewaters, namely copper pit water and raffinate, in a certain volume proportion, so as to form mixed acid wastewater; carrying out fractional precipitation on valuable heavy metals in the mixed acid wastewater by virtue of a combined medicament, so as to reduce neutralizing residue and recycle copper; recycling copper in the acid wastewater through the synergic effect generated in a metabolic process of chemical precipitates and sulfate reducing bacteria; and preparing a compound fertilizer from organic sludge generated by virtue of a biochemical method, and reusing the compound fertilizer in the rehabilitation and afforesting of the mines. According to the device for implementing the method, hydrogen sulfide circulating and absorbing equipment is additionally arranged, a reaction device is optimized, and combinedfillers of a bioreactor are optimized, so that the conversion efficiency of sulfate reducing bacteria to SO4<2-> is increased, and the repeated cyclic utilization of hydrogen sulfide is realized. A process adopted in the method is environment-friendly and has good universality to working conditions of the mines, so that the method has the advantages that the recycling rate of copper in the acid wastewater is more than or equal to 92%, the reduction amount of the neutralizing residue is more than or equal to 70%, the storage capacity pressure of tailings can be effectively reduced, and the like.
Owner:ZIJIN MINING GROUP +1
Method for improving methane recovery by self-improvement of coal seam induced by nitrogen injection
InactiveCN108661603BImprove permeabilityEnhanced overall recoveryFluid removalCoal matrixPhysical chemistry
Owner:SOUTHWEST PETROLEUM UNIV
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