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Method for recycling phenylglycine in cefalexin crystallization mother liquid
ActiveCN105349608AConducive to maximizing the use ofImprove protectionOrganic compound preparationAmino-carboxyl compound preparationRecovery methodOrganic solvent
The invention relates to a method for recycling phenylglycine in cefalexin crystallization mother liquid. The method comprises the steps of pyrolysis, centrifugation, pretreatment, desalination and nano-filtration concentration. The method provided by the invention solves the difficulty that wastewater containing cefalexin cannot be directly treated biochemically, and phenylglycine recovered by the method can be directly applied to subsequent production. According to the method disclosed by the invention, an organic solvent is not used, and the production cost is reduced, so that the method is beneficial for environmental protection and is a green and efficient recovery method.
Owner:XIAMEN TQX MEMBRANE TECH
Energy-conservation and environmental-protection oil transmission pipe paint brushing device
InactiveCN108637866AGood for grinding and cleaningEfficient removalGrinding drivesGrinding machinesElectricityArray data structure
The invention discloses an energy-conservation and environmental-protection oil transmission pipe paint brushing device. The device comprises a support plate; the section of the support plate is two arc plates; the upper parts of the two arc plates are hinged with each other, and the lower parts of the two arc plates can be connected through a locking device; the upper part and the lower part of the inner wall of each arc plate of the support pipe are fixedly connected with one ends of a set of six first electric push rods; the set of first electric push rods are positioned on the same plane;the axes of the set of first electric push rods are intersected in the support pipe; and multiple sets of first electric push rods are arranged on the inner wall of the support pipe in sequence. The device is driven to move through first rollers, and is uniform in moving speed and excellent in paint brushing quality; cleaned impurities can be collected by an air box, and the collected impurities can be classified, so that the recycling of the impurities is facilitated, the maximum utilization of resources is facilitated, and higher environmental protection is achieved; the cleaned impurities cannot be stained on paint-brushed oil transmission pipes; and the device can be suitable for oil transmission pipes with different diameters, and is wider in application range.
Owner:JINAN BILUOCI INFORMATION TECH CO LTD
Recovery method for mix waste gas of hydrogen chloride and sulphur dioxide in lipoic acid preparation
InactiveCN101343038AImprove protectionConducive to maximizing the use ofChlorine/hydrogen-chloride purificationAlkali metal sulfite preparationRecovery methodChlorine dioxide
Disclosed is a recovering method for the mixture waste gas of the chlorine hydride and the sulfur dioxide in the thioctic acid production, which belongs to the mixture waste gas recovery technical field in the thioctic acid production. The recovering method includes that the mixture waste gas of the chlorine hydride and the sulfur dioxide is introduced to a water absorption device through the pipeline; when the concentration of the chlorine hydride solution in the water absorption reaches the discharge concentration, the chlorine hydride is recovered; the purified sulfur dioxide gas after the adsorption of the chlorine hydride gas is sucked to the reactor device by the pipeline in the vacuum way and reacts with the sodium hydroxide solution in steps while the chlorine hydride gas is absorbed by the water absorption device; the reaction temperature and the PH value are respectively controlled and adjusted in steps so that the sodium sulfite solution is obtained; the sodium sulfite solution is discharged from the reactor device and fed to a centrifugal separation device for centrifugal separation, so as to obtain the seven hydrate sodium sulfite crystal; the mother liquor obtained through the centrifugal separation is fed to the reactor device again. The recovering method for the mixture waste gas of the chlorine hydride and the sulfur dioxide has the advantages of environmental protection, resource maximum utilization and saving production cost for the thioctic acid production enterprises.
Owner:SUZHOU FUSHILAI PHARMA CO LTD
All-in-one cabinet air conditioner and outdoor cabinet
InactiveCN109882930AAvoid affecting the heat transfer effectImprove compactnessCondensate preventionLighting and heating apparatusEngineeringIndoor air
The invention provides an all-in-one cabinet air conditioner and an outdoor cabinet. The all-in-one cabinet air conditioner comprises an indoor unit, an outdoor unit and a case used as a shell of theindoor unit and the outdoor unit. The case is divided by a partition plate into an indoor unit cavity and an outdoor unit cavity which are vertically distributed. The indoor unit cavity is provided with an indoor air outlet and an indoor air return opening. The outdoor unit cavity is provided with an outdoor air outlet and an outdoor air return opening. A water discharge pipe of a water receivingdisk of the indoor unit penetrates through the partition plate and is in lap joint with a condenser of the outdoor unit. A connection pipe between the condenser and an evaporator of the indoor unit penetrates through the partition plate. The all-in-one cabinet air conditioner can solve the problems that an existing outdoor cabinet air conditioner is inconvenient to install and maintain, a connection pipeline between an indoor unit and an outdoor unit is long, materials are consumed seriously, and the structure is not compact.
Owner:QINGDAO HISENSE ELECTRONICS EQUIP
Astaxanthin and sea-buckthorn oil solid beverage and preparation method thereof
InactiveCN109007517AConducive to maximizing the use ofLipidic food ingredientsFood dryingAstaxanthinChemistry
The invention discloses an astaxanthin and sea-buckthorn oil solid beverage and a preparation method thereof. The beverage is prepared from the following ingredients in parts by weight: 5 to 12.5 parts of astaxanthin oil, 1 to 6.25 parts of sea-buckthorn oil, 38 to 43 parts of oligosaccharides, 12 to 37.5 parts of starch sodium octenylsuccinate, 0 to 5 parts of arabic gum, 0 to 0.125 parts of vitamin C and 0.1 to 0.625 part of sucrose fatty acid ester, wherein the solid beverage prepared from astaxanthin and sea-buckthorn oil through combination achieves the crossing and mutual complementation; the astaxanthin and sea-buckthorn oil are reasonably proportioned, so that the mutual complementation and perfection of the functions are achieved; the materials are further prepared into the functional solid beverage, so that the functions of the astaxanthin and sea-buckthorn oil can be used to the maximum degree by a customer.
Owner:YUNNAN AIERKANG BIOTECH
Hybrid three-junction compound photovoltaic cell
InactiveCN104201231ABeneficial effect is clearPromote absorptionPhotovoltaic energy generationSemiconductor devicesEngineeringElectronic band structure
The invention relates to a hybrid three-junction compound photovoltaic cell. The surface of the cell is in a two-level protrusion structure comprising a traditional GaInP / GaAs / Ge three-junction compound photovoltaic cell and a novel InAlAsP / InGaAs / Ge three-junction compound photovoltaic cell which are alternately arranged. The hybrid three-junction compound photovoltaic cell has an optimized energy band structure and allows maximal utilization of solar energy, and photoelectric conversion efficiency and collection efficiency can be improved.
Owner:六安市大宇高分子材料有限公司
Parking management system based on smart park
PendingCN111161433AObservation is convenient and intuitiveConducive to maximizing the use ofTicket-issuing apparatusIndication of parksing free spacesParking spaceDisplay device
The invention discloses a parking management system based on a smart park, and relates to the technical field of vehicle management. The system comprises a vehicle entry management system, a parking networking management access system, a parking position monitoring system and a vehicle exit management system. The vehicle entry management system comprises a third processor and a vehicle entry end three-level communication module; the parking networking management access system comprises a first processor, an access end first-level communication module, an access end second-level communication module and an access end third-level communication module, the vehicle entering end third-level communication module is in wireless connection with the access end third-level communication module, andthe parking position monitoring system comprises a position sensor and a parking end first-level communication module. The parking position monitoring system is arranged, the position sensors are arranged at all parking spaces of the indoor parking lot and the open parking lot, a vehicle owner observes the parking space information display in advance, available parking space information can be observed conveniently, rapidly and visually, maximum utilization and integrated management of parking resources are facilitated, and interconnection and intercommunication of open parking and indoor parking lot resources are achieved.
Owner:广东飞企互联科技股份有限公司
Three-sub-node compound photovoltaic cell
InactiveCN104201230ABeneficial effect is clearPromote absorptionPhotovoltaic energy generationSemiconductor devicesTunnel diodeBiology
The invention relates to a three-sub-node compound photovoltaic cell, in particular to an InA1AsP / InGaAs / Ge compound photovoltaic cell. The cell has an optimized 1.90ev / 1.40ev / 0.6ev band structure. The cell has a second order projection structure, and n++InGap / p++InGaAsP heterojuncttion tunnelling diodes and a base region thickness relationship configured with above photovoltaic cell structure. The three-sub-node III-V clan compound photovoltaic cell is high in photoelectric conversion efficiency and collection efficiency, and particularly has an effective range limitation to natural light.
Owner:六安市大宇高分子材料有限公司
Method and device for preparing high-purity tungsten hexachloride
ActiveCN105217691AAvoid YieldAvoid energy consumptionTungsten halidesChemical industryActivated carbonChloride
The invention discloses a method and a device for preparing high-purity tungsten hexachloride. According to the method, tungsten powder, chlorine gas and active carbon are used as raw materials in a mole ratio of 100:(300-600):(1-20), the tungsten powder is added from a side part of a chlorination furnace, part of the chlorine gas is introduced from the bottom of the chlorination furnace, the chlorination temperature is 600-1000 DEG C, gaseous tungsten hexachloride, a small amount of tungsten oxychloride and low-valent tungsten chloride and excess chlorine gas are introduced into a refining furnace, another part of the chlorine gas is also introduced into the refining furnace, the refining furnace is filled with the active carbon, the refining temperature is controlled to be 600-1000 DEG C, the tungsten oxychloride and low-valent tungsten chloride in steam are converted into tungsten hexachloride, the refined tungsten hexachloride steam is introduced into a receiving tower through the upper side of a receiving tower at the other side of the refining furnace, and tungsten hexachloride is extracted out of the bottom of the receiving tower. The method disclosed by the invention is short in flow and less in equipment, is energy-saving and environment-friendly, realizes efficient utilization of resources, achieves integration of roughing and refining of tungsten hexachloride, and has important significances for improvement of a tungsten hexachloride preparation technology.
Owner:湖南省华京粉体材料有限公司
Corn threshing and grinding device
The invention discloses a corn threshing and grinding device, comprising: a shell, the bottom surface of which forms a powder outlet, one side is provided with a core body outlet and an air inlet, and the other side is provided with an air outlet; a plurality of threshing Cylinder, which includes a guide cylinder, a tooth cylinder, and a first motor; the first pair of roller layers and the second pair of roller layers; the conveyor belt assembly, which guides the corn cob out of the shell; blower and exhaust fan; vibrating screen; grinding assembly , which includes a leaking plate, a grinding plate, and at least two pairs of screws and grinding stones. The invention can be fast, efficient, line-type threshing and grinding, effectively separate corn kernels, corn cobs and dust, reduce procedures, improve work efficiency, and facilitate maintenance and maintenance.
Owner:李斌施
Horizontal aluminum profile surface oxidation electrophoresis production line
InactiveCN112725871AGood weather resistanceIncrease productionAnodisationElectrophoretic coatingsElectrophoresesAnodizing
The invention relates to the technical field of aluminum profile machining, in particular to a horizontal aluminum profile surface oxidation electrophoresis production line. The production line comprises a profile storage station, an oil removal station, an acid pickling station, an alkali washing station, an oxidation station, a reserved polishing station, a coloring station, a hole sealing station, a water washing station, an electrophoresis station, a drip-dry station, a curing station, a discharging temporary storage station and a packaging station. The oil removal station is fixedly installed at the right side of the profile storage station, the acid pickling station is installed at the right side of the oil removal station, the alkali washing station is arranged at the right side of the acid pickling station, and the oxidation station is arranged at the right side of the alkali washing station. According to the production line, the purposes that an aluminum profile is high in metal feeling, and an aluminum plate subjected to anode treatment is high in surface hardness, good in scratch resistance and good in surface attractiveness are achieved, customizing can be carried out according to aluminum profile products of different sizes, configuration is conducted from the aspects of yield, product quality and the like, the yield is high, and continuous work can be carried out in the processes from product pretreatment to oxidation, electrolytic coloring and electrophoresis.
Owner:佛山市南海区大佳机电设备有限公司
Threshing pulverizer
The invention discloses a threshing pulverizer. The threshing pulverizer comprises a shell body, a cover body, multiple stabbing needle assemblies, multiple threshing cylinders, a plurality of roll shaft assemblies, a conveyor belt assembly, a vibration screen and a grinding assembly, wherein a powder discharging outlet is formed in the bottom surface of the shell body, a cob body material discharging outlet is formed in one side of the shell body, and a plurality of first air cylinders are arranged on the top surface of the shell body; the stabbing needle assemblies comprise first motors, second air cylinders and push cylinders, multiple columns of horizontal U-shaped files are distributed evenly on inner walls of the threshing cylinders, and the roll shaft assemblies include a roll shaftand multiple pairs of second roll shafts; corncob bodies can be guided out of the shell body through the conveyor belt assembly, and the grinding assembly includes a material leakage plate, a grinding plate and at least two pairs of screws and grindstones. Through the threshing pulverizer, quick, efficient and assembly line-type threshing and grinding can be achieved, corn kernels, corncob bodiesand flying dust can be separated effectively, working procedures are reduced, the work efficiency is improved, and maintenance and preservation are facilitated.
Owner:李斌施
Frequency spectrum sharing method of cognitive radio system and management terminal
InactiveCN106358200AConducive to maximizing the use ofMeet needsNetwork planningFrequency spectrumTelecommunications
The invention provides a frequency spectrum sharing method of a cognitive radio system and a management terminal. The frequency spectrum sharing method has the advantages that before a frequency spectrum resource application is sent to a cognitive database, analyzing the frequency spectrum sharing request of each cognitive node in the managed cognitive radio system, acquiring the related information of the cognitive node adjacent to the cognitive radio system by visiting the cognitive database, and performing interference analysis to determine the first available frequency spectrum of each cognitive node in the cognitive radio system; determining the applicable frequency spectrum of each cognitive node in the managed cognitive radio system according to the distributed frequency spectrum of the managed cognitive radio system, the first available frequency spectrum of each cognitive node in the managed cognitive radio system and the corresponding frequency spectrum resource sharing request of each cognitive node. The frequency spectrum sharing method has the advantages that the needs of each cognitive node are satisfied, the availability of frequency spectrum resource distribution is increased greatly, and the distribution efficiency of frequency spectrum sharing is increased.
Owner:POTEVIO INFORMATION TECH
Pear tree grafting planting method
InactiveCN111587685AIncrease profitIncrease natural pollination rateGraftingCultivating equipmentsPear treeEconomic benefits
The invention relates to the technical field of pear tree grafting, in particular to a pear tree grafting planting method. The pear tree grafting planting method comprises the following steps of A, selecting a stock tree; B, treating the stock tree; C, selecting pear tree scions; D, performing grafting; E, performing modification treatment; and F, performing transplantation and planting. The peartree grafting planting method has the beneficial effects that the natural pollination rate is improved by using different flowering periods; meanwhile, the utilization rate on nutritional ingredientsin fertilizers is improved by relatively staggering the dates of the growth stages; low-temperature cultivation treatment and ultrasonic irradiation treatment are performed on grafted trees; the stress resistance of scions and trees is improved; and the survival rate of the grafted trees in the subsequent transplanting process is improved; the maximum utilization of fertilizer nutrients is more facilitated; the quality of fruits is favorably improved; the operation process is reasonably improved; the economic benefits of planting are well improved; the quality of the fruits is improved; and the popularization and planting values are high.
Owner:滁州市南谯区大柳镇良农金梨专业合作社
Spectrum sharing method and management terminal of cognitive radio system
InactiveCN106358200BConducive to maximizing the use ofMeet needsNetwork planningTelecommunicationsCognitive radio
The invention provides a frequency spectrum sharing method of a cognitive radio system and a management terminal. The frequency spectrum sharing method has the advantages that before a frequency spectrum resource application is sent to a cognitive database, analyzing the frequency spectrum sharing request of each cognitive node in the managed cognitive radio system, acquiring the related information of the cognitive node adjacent to the cognitive radio system by visiting the cognitive database, and performing interference analysis to determine the first available frequency spectrum of each cognitive node in the cognitive radio system; determining the applicable frequency spectrum of each cognitive node in the managed cognitive radio system according to the distributed frequency spectrum of the managed cognitive radio system, the first available frequency spectrum of each cognitive node in the managed cognitive radio system and the corresponding frequency spectrum resource sharing request of each cognitive node. The frequency spectrum sharing method has the advantages that the needs of each cognitive node are satisfied, the availability of frequency spectrum resource distribution is increased greatly, and the distribution efficiency of frequency spectrum sharing is increased.
Owner:POTEVIO INFORMATION TECH CO LTD
A Modularized Automated Breeding System Adapting to Multiple Environments
ActiveCN113367092BConducive to maximizing the use ofImprove efficiencyClimate change adaptationPisciculture and aquariaAnimal scienceElectric machinery
The invention discloses a multi-environment modular automatic breeding system, which comprises a base, a feeding part, a purification part and an oxygenation part. The base is provided with more than two connecting grooves in sequence from left to right, and the feeding part, Both the purification part and the oxygenation part are inserted into the connection groove, and the motor is fixed at the leftmost end of the base. The operation of feeding parts, purification parts and oxygenation parts is driven by a single motor, which saves resources. At the same time, each part of the system adopts a modular setting, and each module can be increased or decreased according to the actual situation, which is conducive to the maximum use of resources. utilization. Each module can realize automatic feeding, water cleaning and oxygenation through the drive of the motor, which greatly improves the efficiency of breeding operations and reduces labor costs.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Modular automatic breeding system adapting to multiple environments
ActiveCN113367092AConducive to maximizing the use ofImprove efficiencyClimate change adaptationPisciculture and aquariaElectric machineryAnimal science
The invention discloses a modular automatic breeding system adapting to multiple environments. The modular automatic breeding system comprises a base, a feeding part, a purifying part and an oxygenation part, more than two connecting grooves are sequentially formed in the base from left to right, the feeding part, the purifying part and the oxygenation part are inserted into the connecting grooves, and a motor is fixed at the leftmost end of the base. The feeding part, the purifying part and the oxygenation part are driven to operate through a single motor, and the effect of saving resources is achieved; and meanwhile, all the parts of the system are arranged in a modular mode, all the modules can be increased or decreased according to the requirements of actual conditions, and maximum utilization of the resources is facilitated. All the modules are driven by the motor to achieve automatic feeding, water body cleaning and oxygenation, the efficiency of breeding operation is greatly improved, and the labor cost is reduced.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Cleaning process for preparing tungsten disulfide by closed-loop circulation
ActiveCN105271415AImprove lubrication performanceIncrease the processing technologyTungsten compoundsTungstenReaction tube
The invention discloses a cleaning process for preparing tungsten disulfide by closed-loop circulation. The cleaning process comprises the following steps of: taking tungsten, sulfur and the tungsten disulfide according to the molar ratio of 1000:(2000-6000):(1:50), firstly mixing uniformly and activating by a ball mill, then feeding the mixture into a sectional box-type reaction tube under the inert atmosphere, insulating for 1-24 hours at the temperature of 230-850 DEG C of a high-temperature area of the reaction tube, adding a sulfur-recovering device at an air-cooling low-temperature area of the reaction tube to realize sulfur recovery and reuse, and reducing the temperature to room temperature under the water-cooling action of a cooling area to obtain the tungsten disulfide. A tungsten-disulfide vacuum device is arranged to be connected with the side wall of the low-temperature area of the reaction tube, and the tungsten disulfide is added to lead sulfur solution to contain 0.05%-10% of tungsten disulfide. The cleaning process disclosed by the invention has the beneficial effects that the closed-loop circulation is adopted, and sulfur is completely used, so that the problems that the environment is polluted due to discharging of toxic gases such as SOX, H2S and NH3, the sulfur utilization rate is low and the external energy is high in the traditional tungsten-disulfide production process are solved. The cleaning process disclosed by the invention has the advantages of simple process, low cost and clean and environmental-friendly effects.
Owner:湖南省华京粉体材料有限公司
Clamping device with protective structure for thermometer assembly
InactiveCN111283587AAdjustable positionEasy to change the use positionWork holdersMechanical engineeringPhysics
The invention relates to a clamping device with a protective structure for thermometer assembly. The device comprises a base and a middle base, wherein the side walls of the left and right ends of thebase are both fixedly provided with base buckles, a hanging rope is fixed to the inner end wall of the top of the base, a base spring post is arranged inside the middle end of the base, the outer wall of the top end of the base is fixedly provided with a connecting sponge layer, the middle base is arranged at the top end of the base, and the left and right ends of the middle base are both provided with penetrating rods. The clamping device with a protective structure for thermometer assembly has the beneficial effects that through use of a pull ring, a thermometer measuring device, a housingof a thermometer and the like can be hung, so that processing and use operation of the thermometer can be conveniently carried out, a thermometer assembly with a larger volume can be arranged througha placement opening, the storage effect of the thermometer assembly is improved, a transverse plate can be matched with the placement opening to form an equal-distance space in the opening, so that the operation of placing, storing and the like can be conveniently carried out better, and a higher classification effect is achieved.
Owner:DONGGUAN RONGGONG AUTOMATION TECH CO LTD
Vanadium extraction cooling agent and preparation method thereof
ActiveCN102864270BEfficient use ofConducive to maximizing the use ofManufacturing convertersMass ratioMixed materials
The invention discloses a vanadium extraction cooling agent, which comprises the following components in percentage by weight: 40-82 percent of vanadium extraction dust removing ash, 12-52 percent of oxide iron scale and 6-8 percent of binding agent. The invention also discloses a preparation method of the vanadium extraction cooling agent. The preparation method comprises the following steps of: proportioning 40-82 percent of vanadium extraction dust removing ash, 12-52 percent of oxide iron scale and 6-8 percent of binding agent by weight; mixing the proportioned materials; adding water while mixing, wherein the mass ratio of the water to the materials is 3:50-5:50; briquetting the uniformly mixed materials; and drying the pressed blocks to obtain the vanadium extraction cooling agent. According to the vanadium extraction cooling agent and the preparation method thereof, the one-time block forming rate of the vanadium extraction cooling agent is over 92 percent, the TFe content reaches over 60 percent, less P, S, water and the like are included, the requirements on use as the vanadium extraction cooling agent are fully met, the dust removing ash produced by the vanadium extraction of a converter can be completely and effectively utilized, the cost is saved, the requirements on vanadium extraction production of the converter can be completely met, and the maximum utilization of a vanadium resource is facilitated.
Owner:PANGANG GRP XICHANG STEEL & VANADIUM CO LTD +1
A clean process for preparing tungsten disulfide in a closed loop
ActiveCN105271415BImprove the lubrication effectGood dispersionTungsten compoundsHigh energyClosed loop
The invention discloses a cleaning process for preparing tungsten disulfide in a closed-circuit cycle. The molar ratio of tungsten, sulfur and tungsten disulfide is 1000: (2000-6000): (1-50); It is sent into a segmented box-type reaction tube under an inert atmosphere, and is kept at 230-850 °C for 1-24 hours in the high-temperature zone of the reaction tube. A sulfur recovery device is added in the air-cooled low-temperature zone of the reaction tube to realize sulfur recovery and reuse, and the water cooling effect in the cooling zone is reduced to Tungsten disulfide was obtained at room temperature. A tungsten disulfide vacuum device is connected to the side wall of the low temperature zone of the reaction tube, and tungsten disulfide is added to make the sulfur solution contain 0.05% to 10% of tungsten disulfide. The process of the invention is closed-circuit circulation and the sulfur is completely used, which solves the problem that SO is common in the traditional tungsten disulfide production process. X , H 2 S, NH 3 It has the advantages of simple process, low cost, cleanliness and environmental protection due to the problems of toxic gas emissions polluting the environment, low sulfur utilization rate, and high external energy.
Owner:湖南省华京粉体材料有限公司
A kind of preparation method and device of high-purity tungsten hexachloride
ActiveCN105217691BHigh purityIncrease productionTungsten halidesChemical industryActivated carbonChloride
The invention discloses a method and a device for preparing high-purity tungsten hexachloride. According to the method, tungsten powder, chlorine gas and active carbon are used as raw materials in a mole ratio of 100:(300-600):(1-20), the tungsten powder is added from a side part of a chlorination furnace, part of the chlorine gas is introduced from the bottom of the chlorination furnace, the chlorination temperature is 600-1000 DEG C, gaseous tungsten hexachloride, a small amount of tungsten oxychloride and low-valent tungsten chloride and excess chlorine gas are introduced into a refining furnace, another part of the chlorine gas is also introduced into the refining furnace, the refining furnace is filled with the active carbon, the refining temperature is controlled to be 600-1000 DEG C, the tungsten oxychloride and low-valent tungsten chloride in steam are converted into tungsten hexachloride, the refined tungsten hexachloride steam is introduced into a receiving tower through the upper side of a receiving tower at the other side of the refining furnace, and tungsten hexachloride is extracted out of the bottom of the receiving tower. The method disclosed by the invention is short in flow and less in equipment, is energy-saving and environment-friendly, realizes efficient utilization of resources, achieves integration of roughing and refining of tungsten hexachloride, and has important significances for improvement of a tungsten hexachloride preparation technology.
Owner:湖南省华京粉体材料有限公司
A ship arrangement structure of a longline fishing system and its operation method
ActiveCN112249249BIntegrity guaranteedConducive to maximizing the use ofVessel partsLinesDynamic positioningZoology
A longline fishing system ship layout structure and operation method thereof, including a survey ship, an open-air work area is provided at the tail of the main deck of the survey ship, a superstructure is provided at the middle and front part of the main deck, and the rear of the superstructure is A rear end wall is arranged at the end of the ship, and the rear end wall is located behind the middle of the ship; a longline fishing system is installed in the open-air work area, and the structure of the longline fishing system is: including a rope throwing machine and a rope taking machine arranged at intervals, A three-way guide wheel is arranged on one side of the rope machine, and multiple dry rope winding guides and multiple one-way guide wheels are arranged on the route between the rope take-up machine and the throwing machine and between the rope take-up machine and the three-way guide wheels. On the route, both routes pass through the dry rope; the open-air operation area is also equipped with a dynamic positioning system control station, which is comprehensively arranged and has a high utilization rate, and is suitable for medium and large fishery resource survey ships over 50 meters in length.
Owner:CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
Method for improving relay protection reliability of power distribution network containing distributed power supply
PendingCN114243656AConducive to maximizing the use ofLow reliabilityArrangements responsive to excess currentCommunications systemElectric power system
The invention relates to the technical field of relay protection of a power distribution network of a power system, and particularly discloses a method for improving relay protection reliability of a power distribution network containing a distributed power supply, which comprises the following steps of: determining a position where an access point of the distributed power supply accesses the power distribution network, and connecting relay protection equipment at the position; the method comprises the following steps of: pre-implanting a capacity value of a distributed power supply which is allowed to be accessed to a power distribution network when protection can correctly act when a protected element generates the most serious fault in relay protection equipment, and calculating a current value through logic of the protected element at the moment; and the relay protection equipment receives the capacity value of the distributed power supply accessed to the power distribution network and the current value passing through the protected element at the moment in real time through the power distribution network communication system. The method can meet the requirement that the injection capacity of the distributed power supply is larger and larger, the maximum utilization of the distributed power supply is facilitated, the situation that the reliability of the relay protection device is reduced due to continuous change of the capacity of the distributed power supply connected to the power distribution network is avoided, and the feasibility is high.
Owner:江苏力源电力工程有限公司
A Method of Improving the Reliability of Relay Protection of Distribution Network Containing Distributed Power
ActiveCN107221919BLow reliabilityConducive to maximizing the use ofEmergency protective arrangements for automatic disconnectionCapacity valueEngineering
Owner:STATE GRID LIAONING ELECTRIC POWER RES INST +3
A kind of oxygen reduction catalyst and its preparation method and application
ActiveCN107583662BExcellent electrocatalytic performance for oxygen reductionEasy to preparePhysical/chemical process catalystsCell electrodesPtru catalystFuel cells
The invention discloses an oxygen reduction catalyst, comprising: a hollow nitrogen-doped carbon sphere with a shell; and transition metal nanoparticles embedded in the shell. The oxygen reduction catalyst according to the present invention has a uniform transition metal nanoparticle-nitrogen-doped active center, and a suitable pore size and high specific surface area of the mesoporous channel, which is conducive to the transport of reactants and products during the oxygen reduction process, so its It has efficient oxygen reduction catalytic performance and excellent stability. The present invention also discloses a preparation method of the above-mentioned oxygen reduction catalyst, comprising: dispersing the microsphere template in an alkaline solution to obtain a first mixture; adding a nitrogen-doped carbon source and a transition metal salt to the first mixture, and the obtained The nitrogen-doped carbon source is polymerized to obtain a second mixture; the second mixture is dried and calcined in a protective gas to obtain an oxygen reduction catalyst. The invention also discloses the application of the above-mentioned oxygen reduction catalyst in the cathode of the fuel cell.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
High strength and large specific heat multiphase magnetic cold storage material and preparation method thereof
ActiveCN105063450BHigh specific heatQuality improvementHeat-exchange elementsHeat capacityLow oxygen
The invention discloses a high-intensity large-specific heat multiphase magnetic cold accumulation material and a preparation method thereof. The material consists of at least two phases or more than two phases; sample preparation is carried out according to an ASTM E9-09 standard; a compression test is carried out; the compression intensity is large than 200 MPa; within the temperature range of 2K-10K, the unit volume specific heat value and the heat capacity value of the material are both larger than the unit volume specific heat value and the heat capacity value of Pb; and within the temperature range of 10K-40K, the unit volume specific heat value and the heat capacity value of the material are respectively 83% larger than the unit volume specific heat value and the heat capacity value of Pb. A low-purify metal or a recovered material is used as a raw material; a deoxygenization technology is utilized to obtain the high-intensity large-specific heat multiphase magnetic cold accumulation material with a lower oxygen content than the oxygen content of the raw material; from 4K to 40 K, a large specific heat is presented, so that the material can replace Pb for use; the material is prepared by using the raw material with a high oxygen content; the material requirement is reduced; the preparation cost is saved; and the price competitive capacity is improved.
Owner:UNIV OF SCI & TECH BEIJING
A device for clean production of tungsten disulfide
The invention discloses a device for clean production of tungsten disulfide. The device comprises a box-type reaction tube and a sulfur recycling tower, wherein the box-type reaction tube is divided into a feeding area, a reaction area, a low-temperature area, a cooling area and a discharging area; a pusher track is arranged in the box-type reaction tube, pushers are arranged on the track, an inert gas inlet is formed in the upper part of the feeding area, a feeding opening is formed in the side part, and the head part of the feeding area is provided with an electric push rod device; a high temperature area is heated and thermally controlled by virtue of a resistance furnace, a gas outlet is formed in the top of the reaction area on the lower end of gas flow, and the reaction area is connected with a sulfur recovering tower by virtue of a resistance wire insulation pipe; one side of a sulfur outlet in the bottom of the low-temperature area is provided with a slope of 5 to 15 degrees, the surface of the slope is coated with tungsten disulfide of 0.05mm to 10mm, a sulfur outlet in the bottom end of the slope is connected with the sulfur recovering tower, and a connection part is thermally insulated by virtue of asbestos; the cooling area is coated with a cooling water layer to lower the temperature. By adopting the device, the sulfur interception can be avoided, continuity in clean production can be realized, no waste gas, waste water and industrial residue is produced, the device is environment-friendly and pollution-free, and the continuous industrialized mass production can be realized.
Owner:湖南省华京粉体材料有限公司
Ship arrangement structure of long-line fishing system and operation method of ship arrangement structure
ActiveCN112249249AIntegrity guaranteedConducive to maximizing the use ofVessel partsLinesMarine engineeringFishing
The invention discloses a ship arrangement structure of a long-line fishing system and an operation method of the ship arrangement structure. The ship arrangement structure of the long-line fishing system comprises an investigation ship, an open-air operation area is arranged at the tail of a main deck of the investigation ship, a superstructure is arranged on the front middle portion of the maindeck, a rear end wall is arranged at the rear end of the superstructure, and the rear end wall is located behind the middle of the ship. A long-line fishing system is installed in the open-air operation area and structurally comprises a rope throwing machine and a rope collecting machine which are arranged in a spaced mode, and a three-way guide wheel is arranged on one side of the rope throwing machine. A plurality of dry rope winding conduits and a plurality of one-way guide wheels are arranged on a route between the rope collecting machine and the rope throwing machine and a route between the rope collecting machine and the three-way guide wheel, and dry ropes penetrate through the two routes. A power positioning system control station is further arranged on the open-air operation area,arrangement is comprehensive, the utilization rate is high, and the system is suitable for medium-large fishery resource investigation ships with the length being 50 m or above.
Owner:CHINA SHIP SCIENTIFIC RESEARCH CENTER (THE 702 INSTITUTE OF CHINA SHIPBUILDING INDUSTRY CORPORATION)
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