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274results about How to "Avoid explosion risk" patented technology
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Reactor for producing acid phase with diphasic anaerobic digestion of urban biomass garbage
InactiveCN101402096AGood energy saving and environmental protection characteristicsLow consumption and efficient operationBiological substance pretreatmentsSolid waste disposalFermentationMaterials science
The invention discloses a two-phase anaerobic digestion acidogenic phase reactor for municipal biomass waste. The acidogenic phase reactor is provided with an enclosed vertical kettle formed with a thin corrosion resistant stainless steel inner barrel and a common carbon steel outer barrel. The kettle is welded with a dimple jacket outside, and is fixed with a hollow guiding barrel inside, and the insides of the dimple jacket and the hollow guiding barrel both have a heating medium so as to realize heating insulation operation under the combination control of a temperature sensing probe and a temperature controller. A multi-layer push type propeller blade with less flow resistance is used to perform mechanical stirring of the biomass waste entering the reactor, and meanwhile low consumption and high efficiency mixing of material and liquid can be realized with the forced current limit of the guiding barrel. The rotating inner stirring device and the resting kettle are mechanically sealed through a movable sealing element. The acidogenic phase reactor integrates the functions of stirring, mixture, reaction, fermentation, heating and insulation has good energy-saving and environmental-protection property, which can digest the high solid municipal biomass waste into small molecule organic acids that can be used by methanogens bacteria directly.
Owner:ZHEJIANG UNIV
Power battery thermal protection system
PendingCN110828747AAvoid direct contactAvoid short circuit failureSecondary cellsFire rescueThermal runawayThermal insulation
The invention provides a power battery thermal protection system, which is used for carrying out thermal protection on a power battery pack. The power battery pack comprises an upper cover, a lower housing and a plurality of module integration modules which are located between the upper cover and the lower housing and are arranged in the first direction. The power battery thermal protection systemcomprises fireproof thermal insulation pads, which are arranged between the upper cover and the module integration modules, wherein the fireproof thermal insulation pads are in one-to-one correspondence with the module integration modules; and a battery pack explosion-proof valve, which is arranged on the inner side of at least one side edge, in the second direction, of the lower housing, whereinthe second direction is perpendicular to the first direction. The system realizes prolonging of time before the fire of a battery core breaks through a power battery housing when the battery core issubjected to thermal runaway due to heating, thereby leaving enough escape time for passengers, and guaranteeing the safety of the passengers.
Owner:AIWAYS AUTOMOBILE CO LTD
Methanation process for removing a small amount of H2 from industrial CO gas and preparation method of catalyst
InactiveCN102247851AEasy to prepareLow equipment requirementsCarbon monoxideMetal/metal-oxides/metal-hydroxide catalystsIndustrial gasPtru catalyst
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Fire extinguishing plant of energy storage system
The invention discloses a fire extinguishing plant of an energy storage system, comprising a sprinkler device, a smoke drying device, a water retaining device, and a water drainage device, wherein, the sprinkler device is used for spraying running water at the ablaze battery module, the smoke drying device is used for discharging smoke on the fire point and drying the battery module when water spraying stops, and the water retaining device is arranged opposite to the sprinkler device for blocking the water sprayed from the sprinkler device to prevent the water from flowing around any region outside the ablaze battery module and allowing the water to enter the water drainage device to discharge. According to the invention, water is used for fire extinguishment and simultaneously smoke discharge is carried out, thus the speed of fire extinguishment is fast, the smoke is little, inflammable gases released from the battery can be rapidly removed by timely smoke discharge in the fire extinguishing process, the danger of gas suffocation is avoided, the explosion risk caused by accumulation of inflammable gases injected by the battery in the process of using gas for fire extinguishment is avoided, and the electric shock caused by chaotic water flow is effectively avoided by the water retaining device and the water drainage device.
Owner:DONGGUAN AMPEREX TECH +1
Non-symmetric flex-rigid combination circuit board and manufacturing method thereof
ActiveCN103731977AImprove flatnessMeet the thickness design requirementsPrinted circuit detailsMultilayer circuit manufactureNon symmetricEngineering
Owner:GUANGZHOU FASTPRINT CIRCUIT TECH +2
Soft package power battery module and system thereof
ActiveCN111584784AAvoid explosion riskImprove securitySecondary cellsCell component detailsPower batteryProcess engineering
The invention provides a soft package power battery module and a system thereof. The module comprises a housing; a plurality of heat insulation pieces arranged in the housing at intervals, wherein thehousing is internally divided into a plurality of independent cavities by the heat insulation pieces; a soft package battery pack arranged in the housing, wherein the soft package battery pack comprises a plurality of battery core units which are electrically connected with one another, the battery core units being distributed in the different cavities; and a plurality of pressure relief parts arranged on the housing, wherein the plurality of pressure relief parts correspond to the plurality of cavities, and the pressure relief parts are used for releasing high-temperature substances in the corresponding cavities. The embodiment of the invention provides the soft package power battery module with good safety performance and the system thereof.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY
Intelligent low energy consumption sludge low-temperature drying system
PendingCN109231780AImprove drying efficiencyHeating fastSludge treatment by de-watering/drying/thickeningSludgeHigh energy
The invention discloses an intelligent low energy consumption sludge low-temperature drying system. The system comprises a sludge feed device (1), a drying tank (2), a dehumidifying and heating device(3), a dust removing device (4) and a gas pipeline, wherein the sludge feed device (1) is arranged on the drying tank (2) and is connected with the drying tank (2); the drying tank (2) is connected with the dehumidifying and heating device (3) through the gas pipeline; the dust removing device (4) is arranged between the drying tank (2) and the dehumidifying and heating device (3); a sludge outlet (2-5) is formed in the bottom of the drying tank (2); an automatic sampling device (7) is used for automatically sampling sludge in the drying tank (2); a water content online detection device (9) is used for detecting the water content of sampled sludge, and the sludge conveying speed of the drying tank (2) is adjusted according to the detection result of the water content. The intelligent lowenergy consumption sludge low-temperature drying system has the advantages of high energy utilization, and real-time detection on sludge water content variation through the water content online detection device.
Owner:浙江诺曼环保工程技术有限公司
Dedusting device for flour processing
InactiveCN108686435AEasy to moveImprove the bactericidal effectDispersed particle filtrationTransportation and packagingEngineeringElectric signal
The invention discloses a dedusting device for flour processing. The dedusting device comprises a device body and a cleaning plate, a dust detector is mounted on the surface of one side of the devicebody, and an air inlet is arranged on the surface, positioned on one side of the device body, below the dust detector. A dust filtering mechanism composed of a first filter net, a second filter net, athird filter net, the dust detector and the air inlet is adopted; when the circumstance that dust concentration is too high is detected by the dust detector, an electric signal is transmitted to an exhaust fan in the air inlet through the dust detector, and the exhaust fan starts to work; a hollow dust adsorption plate and an air suction port are arranged on the surface of the air inlet, so thatoutside dust can be sucked into the dedusting device to greatest extent and then is filtered through the first filter net, the second filter net and the third filter net, then dust-free air is discharged, so that the dust can be purified completely through multilayer filtering; a filter net is arranged in an air outlet, so that outgoing air can be ensured to be dust-free.
Owner:范志杰
Novel crushing and cleaning device for high-risk waste barrel
ActiveCN113369282ACompact structureReduce risk of leakageSolid waste disposalHollow article cleaningEngineeringEnvironmental geology
The invention discloses a novel crushing and cleaning device for a high-risk waste barrel. The device comprises a machine body, the machine body is composed of an upper platform, a lower platform and a connecting column connecting the upper platform and the lower platform, a waste hole is formed in the lower platform, a waste recovery bin and a barrel cover recovery groove are arranged below the waste hole of the lower platform, barrel cover cutting machines are arranged at the parts, on the two sides of the waste hole, of the lower platform respectively, a clamping mechanical arm is arranged at the part, on the rear side of the waste hole, of the connecting column, a waste barrel conveyor is arranged at the part, on the front side of the waste hole, of the lower platform, and a waste barrel cleaning device is arranged above the waste hole and installed on the lower end face of the upper platform. The device is simple, practical, compact in structure, capable of automatically completing dumping of high-risk solid-liquid waste packaged by a waste oil barrel and cleaning of the packaged oil barrel, high in automation degree, capable of conducting closed treatment to reduce the risk of waste smell leakage, capable of avoiding harm of manual treatment to workers and capable of avoiding the explosion risk caused by incineration treatment, safe and reliable.
Owner:ZHEJIANG FENGDENG CHEM
Crushing-grinding-disc-type kitchen waste processor and treatment method thereof
The invention discloses a crushing-grinding-disc-type kitchen waste processor and a treatment method thereof, and belongs to the technical field of waste treatment. The crushing-grinding-disc-type kitchen waste processor comprises a feeding device, a sealing plug, an upper cover, a cylinder, a base, a bottom disc, a maintenance cover, a motor, a driving shaft, a crushing basket, four toothed crushing knives, three collision blocks, five ring cutting collision knives, an upper grinding disc, a lower grinding disc, a gear fixing disc, a slurry discharging inclined disc, a slurry discharging solenoid valve and a slurry discharging opening. The treatment method comprises a feeding layer, a crushing layer, a grinding disc layer and a waste discharging layer. According to the crushing-grinding-disc-type kitchen waste processor, collision crushing is conducted on the kitchen waste, and grinding disc grinding crushing is conducted on the kitchen waste into a slurry dilution flow to be discharged; and the crushing-grinding-disc-type kitchen waste processor has the beneficial effects that the kitchen waste develops towards the direction of reduction, recycling and harmlessness, collision crushing and grinding disc grinding crushing are conducted on the kitchen waste into a slurry dilution flow so as to be suitable for being discharged to a municipal sewage system in China for treatment.
Owner:NINGBO DONGDA AIR CONDITIONING EQUIP
Power generation device capable of continuously generating hydrogen
ActiveCN111509269AReduced control logic and power outputAvoid the risk of explosionReactant parameters controlMotive system fuel cellsProcess engineeringWater supply
The invention relates to the technical field of hydrogen power generation devices. The invention discloses a power generation device capable of continuously generating hydrogen. The device comprises ahydrogen generation system and a fuel cell power supply system, the hydrogen generation system comprises a plurality of mutually independent solid hydrogen storage devices, a water supply unit and agas transmission unit, the water supply unit can only inject reaction water into one solid hydrogen storage device at one time and discharge the reaction water when the volume of the reaction water inthe solid hydrogen storage device is greater than a threshold value or the temperature in the solid hydrogen storage device is greater than a threshold value; when the hydrogen flow in the solid hydrogen storage device is less than the power supply requirement of the fuel cell power supply system; and the water supply unit pumps out the reaction water in the solid hydrogen storage device, and supplies water to the next solid hydrogen storage device according to the power generation requirement of the fuel cell power supply system after the reaction of raw materials in the solid hydrogen storage device is finished, so that hydrogen can be continuously produced, and the purpose of power generation is achieved.
Owner:艾氢技术(苏州)有限公司
Method for treating the surface of a metallic substrate
ActiveUS20150337171A1High and adjustable pot lifeEasy to handleSynthetic resin layered productsLaminationSilanesAcyl group
An advantageous method for treating the surface of a metallic substrate made of aluminum or an aluminum alloy, comprising the following steps: providing a water-based mixture with a sol, comprising alkoxy silanes of general chemical formula Si(OR)4 and organoalkoxy silanes of general chemical formula R″Si(OR′)3, in which R and R′ are linear or branched, short-chained hydrocarbon groups with at least one hydroxyl group and R″ is an organic group with a glycidoxy-, merkapto-, amino-, methacryl-, allyl- and / or vinyl-group, applying the mixture to the surface of the metallic substrate and at least in sections, hardening the mixture with a formation of a sol-gel coating connected to the metallic substate.
Owner:AMAG ROLLING
Natural gas hydrogenation device and method for long-distance pipeline
PendingCN109469825AMaximize economic benefitsEasy maintenancePipeline systemsHydrogen technologiesAutomatic controlPositive pressure
The invention discloses a natural gas hydrogenation device and method for a long-distance pipeline. The natural gas hydrogenation device comprises a pipeline part, a PLC and a safety protection part.The pipeline part comprises a main pipe, a first pipeline, a second pipe and a mixed total pipe. The second pipe is connected with the first pipeline. The main pipe and the first pipeline are connected with the mixed total pipe. A static mixer is installed on the mixed total pipe. The PLC is connected with the main pipe and the first pipeline correspondingly. The flow of hydrogen of the first pipeline is adjusted according to the pressure and flow information of the main pipe and the first pipeline, and the hydrogen is output via the static mixer on the mixed total pipe. The safety protectionpart includes a combustible gas alarm controller and a positive pressure explosion-proof control system and can send out sound-light alarm and protect an electrical device to operate safely under thedangerous environment of explosive gas. The natural gas hydrogenation device and method for the long-distance pipeline have the advantages of simple automatic control, large dosage, continuous operation, stable adding proportion, uniform mixing, no air discharge pollution, safety and reliability.
Owner:SINOPEC ZHONGYUAN PETROLEUM ENG DESIGN +1
Medium- and high-frequency electromagnetic heating clasping device for heating and unfreezing pipeline
InactiveCN104405995AReasonable structureEasy to installPipe heating/coolingInduction heating controlEngineeringOil production
The invention provides a medium- and high-frequency electromagnetic heating clasping device for heating and unfreezing a pipeline, and aims at solving the problems that a wellhead is roasted and heated with open fire during replacing a packing, which is small in working efficiency and easy to cause potential risk, and the mode of coiling the pipeline with a coil to heat at the field is limited and cleaning cannot be performed. The device comprises a clasping body; the clasping body comprises two symmetric semicircular stainless steel bodies and is connected through a hinge; a heat insulating plate is arranged on the clasping body, and a high frequency coil is paved on the heat insulating plate; a temperature sensor is mounted on the clasping body; when in use, the device is clasped into an oil production packing in an oilfield or water and steam pipeline and other heated objects, then a power supply is connected, the temperature and parameters are set as requirement, and finally petroleum or ice in the heated object can be unfrozen after the set temperature is reached, and thus the purpose of normal construction can be reached; the device has the characteristics of being convenient to mount and dismount, high in working efficiency, and easy to be cleaned.
Owner:沈阳艾斯德电气系统有限公司
Energy-saving microwave drying equipment
InactiveCN106705571AFull recoveryReduce energy consumptionDrying solid materials with heatDrying gas arrangementsMicrowaveCombustible gas
The invention relates to energy-saving microwave drying equipment capable of carrying out sufficient waste heat recovery on microwave steam. The problems that unit energy consumption is high, foreign taste is emitted and potential safety hazards are caused when some materials volatilize combustible gas in the drying process according to existing microwave drying equipment are solved through the product. The equipment is mainly composed of a preheating section and a microwave drying section and accessorily comprises a refrigeration system, a waste heat recovery system and an automatic nitrogen filling system. When the equipment carries out microwave drying on materials, an evaporator in the refrigeration system cools microwave steam into condensate water, remaining warm dry air is recycled, and gas emission is avoided; condensate water is used as an intermediate medium for recycling microwave steam heat which carries out preheating on materials together with heat produced by a condenser in the refrigeration system; and the automatic nitrogen filling system carries out rapid nitrogen filling protection when a combustible gas sensor, a controller and a release valve detect that the concentration of combustible gas in a cavity of the equipment reaches the preset value.
Owner:范铁钢
Improved roadway boring machine
ActiveCN106907150AAvoid explosion riskImprove efficiencySlitting machinesTunnelsHydraulic motorRubber ring
The invention discloses an improved roadway boring machine. The upper portion of a rack is connected with a hydraulic motor and a cantilever, the outer side of the cantilever is connected with a cutting head, a nozzle is arranged on the outside of the cutting head, and a water injection pipe is further arranged inside the cantilever; a first through hole is formed between the cantilever and the water injection pipe, the hydraulic motor is connected with a water injection ring through a support frame, and the water injection ring is connected with a water inlet pipe through a water pipe joint; and the outside of the bearings are sleeved with sealing rings, each sealing ring comprises a first rubber ring and two second rubber rings, and the two second rubber rings are respectively located on both sides of each bearing, first springs are arranged between the second rubber rings and the first rubber rings, the two sides of the second rubber rings and the first rubber rings are connected through connection rigs, annular cavities are further formed inside the first rubber rings, two second through holes are formed inside the annular cavities, and the outside of two first rubber rings are sleeved with sleeve tubes. The improved roadway boring machine can improve the deficiencies of the prior art, and a spray structure of the improved roadway boring machine has a better sealing and a cooling effect.
Owner:JIANGXI UNIV OF SCI & TECH
Water wall coal water slurry gasifier provided with ignition furnace head and gasification technologies thereof
ActiveCN103320171AAvoid the danger of peroxygen explosionRealize large-scaleCombined combustion mitigationGranular/pulverulent flues gasificationCoal waterSlag
The invention discloses a water wall coal water slurry gasifier provided with an ignition furnace head. The water wall coal-water slurry gasifier comprises: a furnace body; a vaporizer arranged inside the furnace body, wherein the inner wall of the vaporizer is a water wall; installing ports for nozzles of coal water slurry and gasifying agent, a crude gas outlet and a slag removal opening which are arranged on the furnace body; the ignition furnace head arranged on the top side of the furnace body, wherein the inner chamber of the furnace body is communicated with the vaporizer, nozzle installing ports for a feed nozzle and an ignition nozzle are arranged on the ignition furnace head, and the inner chamber is made of firebricks. The invention also discloses gasification technologies of the water wall coal water slurry gasifier provided with ignition furnace head. According to the gasification technologies, the coal water slurry and gasifying agent are ignited in the ignition furnace head and then injected into the vaporizer for ignition of the coal water slurry and gasifying agent which are injected via the nozzles of coal water slurry and gasifying agent, so that gasification reaction is carried out. The water wall coal water slurry gasifier provided with the ignition furnace head is used to solve problems that: the ignition is difficult when an existing water wall coal water slurry gasifier is started.
Owner:任相坤
Direct-current electric automobile power battery protection device and work method thereof
The invention discloses a direct-current electric automobile power battery protection device and a work method thereof. The direct-current electric automobile power battery protection device includesfour branch circuits arranged on an electric automobile power battery main closed circuit, wherein the first branch circuit is alone composed of a power electronic switch, the second branch circuit isalone composed of a direct-current fuse protector, the third branch circuit and the fourth branch circuit are each alone composed of a direct-current mechanical switch, and the first and third branchcircuits are connected in parallel and then are in series connection with the second and fourth branch circuits which are connected in parallel; a control closed circuit of the device is provided with a current detection and control module for detecting the current state of the main closed circuit and controlling all the switches to be switched on and switched off so that different switch-on andswitch-off logic can be achieved. By adopting the device, the main closed circuit load current is on and off flows through the direct-current mechanical switches, the main closed circuit rated load current and overload current is off through when the power electronic switch, and the main closed circuit short-circuit current is off through the direct-current fuse protector; the switch-on and switch-off advantages of all the switches within different fault current ranges are fully exerted, direct-current electric automobile fault current is reliably broken, and therefore the device can replace current protection strategies.
Owner:XI AN JIAOTONG UNIV
Solid-liquid-gas three-state cooperative garbage pyrolysis treatment system
ActiveCN105674280AAvoid getting lostImprove high temperature utilizationIndirect carbon-dioxide mitigationIncinerator apparatusCombustionSlag
The invention discloses a solid-liquid-gas three-state cooperative garbage pyrolysis treatment system. The system comprises a garbage treatment furnace, a draining device, an air blower, a first draught fan, a second draught fan, a gas purifying mechanism and a slag recycling mechanism. In the system, a combustion point is directly covered by garbage so that open fire can not appear in a garbage treatment furnace, and safety of garbage treatment is improved. Besides, a negative-pressure environment is maintained in the garbage treatment furnace, and explosive risks caused after flammable and combustible garbage is combusted can also be avoided. In the system, after the garbage starts to be combusted, fuel does not need to be supplemented, the garbage treatment furnace does not need to subjected to anti-explosion treatment, and cost is reduced easily.
Owner:湖南未名环保科技有限公司
New energy lithium battery special packaging material
The invention discloses a new energy lithium battery special packaging material which is prepared from, by weight, 50-60 parts of unsaturated polyester resin, 1-2 parts of bentonite, 5-10 parts of fire retardant, 20-30 parts of heavy calcium powder, 20-30 parts of talcum powder, 3-5 parts of additives and the like. A power lithium battery prepared from the special packaging material has the waterproof, dampproof, fireproof, anti-explosion, fire retardance functions. Meanwhile, the packaging material further has a heat conductive function, heat emitted by the lithium battery in the working process can be dissipated, the service life of the battery is remarkably prolonged, and charging safety of the battery is remarkably improved.
Owner:GUANGZHOU HAILI CHEM
Cooling system and method for hydrogen storage container of hydrogen refueling station
PendingCN112413390ASolve temperature problemsThe use temperature does not exceed the limitPressure vesselsGas handling/storage purposeThermodynamicsAutomatic control
The invention discloses a cooling system and method for a hydrogen storage container of a hydrogen refueling station, and aims to solve the safety problems caused by over-high temperature, over-fast temperature rise and leaked gas flammability in the use process of the hydrogen storage container. The cooling system mainly comprises a spraying mechanism, a sprinkling mechanism and a control unit, all of which are configured at the same time. Spraying or sprinkling is automatically controlled after logic processing by collecting the temperature of the hydrogen storage container, the temperatureof a tank field environment, signals of a tank field flame detector and signals of related buttons, and therefore the cooling function of the hydrogen storage container is achieved. The problems thatthe temperature is too high, and temperature rise is too fast in the using process of the hydrogen storage container can be effectively solved, so that potential safety hazards are eliminated. When hydrogen leakage combustion occurs in a hydrogen storage container area pipeline, spraying cooling is carried out on the hydrogen storage container, and the risk of explosion caused by failures of the hydrogen storage container is avoided.
Owner:正星氢电科技郑州有限公司
Auxiliary engine tracking power source system for power plant
ActiveCN106208153ASimple structureShorten the lengthEnergy industrySingle network parallel feeding arrangementsAir volumeTransformer
The invention discloses an auxiliary engine tracking power source system for a power plant. The auxiliary engine tracking power source system comprises a high-voltage station transformer, station auxiliary engines and a tracking power source generator, wherein a turbine-drive tracking power source generator is adopted to supply power to the station auxiliary engines; the rotary speeds of the auxiliary engines, such as a draught fan and a water pump are adjusted to the optimal working condition according to requirements of different loads for air volume and water volume, so that energy loss caused by air door baffle cut-off can be avoided. The auxiliary engine tracking power source system adopts a novel energy-saving and consumption-reducing technology for the power plant, so that the station service power consumption rate of the power plant can be substantially lowered.
Owner:XIAN XIRE ENERGY SAVING TECH +1
Reactors and methods for producing spin enriched hydrogen gas
InactiveUS20110262346A1Avoid explosion riskMeet the requirementsOrtho-para hydrogen conversionHydrogen productionHydrogenSpins
Owner:HADASIT MEDICAL RES SERVICES & DEVMENT
Safe lithium ion battery coil core and lithium ion battery
PendingCN107732318AHigh mechanical strengthImprove securityFinal product manufactureSecondary cellsEngineeringElectrochemistry
The invention discloses a safe lithium ion battery coil core and a lithium ion battery containing the safe lithium ion battery coil core. The safe lithium ion battery coil core is formed by winding anegative plate, a positive plate and a diaphragm stacked between the negative plate and the positive plate, wherein an electrode plate on the outer side of the safe lithium ion battery coil core is the negative plate; the tail end of the negative plate on the outer side of the safe lithium ion battery coil core is a blank tail end without a negative active layer; a negative tab is electrically connected to the surface, which deviates from the inner side of the safe lithium ion battery coil core, of the blank tail end; a temperature-resistant insulating layer is bound to the surface, which faces the inner side of the safe lithium ion battery coil core, of the blank tail end; and the temperature-resistant insulating layer and the negative tab are in negative correspondence at an electric connection point on the surface of the blank tail end. The safe lithium ion battery coil core and the lithium ion battery with the same disclosed by the invention have high safety and excellent electrochemical performance.
Owner:DONGGUAN CHUANGMING BATTERY TECH
Green synthesis process of 4,4'-dinitrodiphenyl ether
InactiveCN106905163AEliminate distillation recoveryAvoid explosion riskOrganic chemistryOrganic compound preparationEtherSolvent
The invention discloses a green synthesis process of a 4,4'-dinitrodiphenyl ether. The sodium para-nitro phenolate and the p-nitrchlorobenzene are taken as raw materials to conduct a condensation reaction, a condensation material liquid obtained after the reaction is cooled, crystalized and centrifugally separated to obtain a crude product and a mother solution, the crude product is washed to obtain the high-purity 4,4'-dinitrodiphenyl ether, the mother solution is directly used in the following condensation reaction without being treated. The condensation product is obtained through a temperature and speed controlled cooling and crystalizing method, a solvent in the mother solution does not need to be distilled and recovered and is directly used, a 4,4'-dinitrodiphenyl ether crystal prepared through cooling and crystalizing is low in impurity content and good in color and luster; the process flow is simplified, the product purity and the yield of the product are increased, the energy is saved, and the emission is reduced.
Owner:JIANGSU GOLD BRIDGE SALT & CHEM GRP
Method and device for preparing indium antimonide single crystal
ActiveCN111809229ALow process experience requirementReduce dislocation densityPolycrystalline material growthFrom frozen solutionsPhysicsDislocation
The invention provides a preparation method and device of an indium antimonide single crystal, and relates to the field of crystal preparation. The preparation method comprises the following steps: adding indium antimonide seed crystals, indium antimonide polycrystals and diboron trioxide into a closed container; carrying out crystal growth by adopting a vertical Bridgman method (VB method); in this way, the crystals begin to grow from the bottom of the melt and are not interfered by dross, automation of crystal growth can be achieved by controlling a heating program, and compared with a Cz method, the method is low in requirement for technological experience of crystal pulling workers, high in finished product success rate, low in dislocation density and stable and controllable in quality. By arranging a heating area with independent temperature control above the closed container, the heat preservation effect can be achieved, materials can reach the set temperature more accurately, and the overall mass distribution of obtained crystals is more uniform.
Owner:安徽光智科技有限公司
Energy generation system with hydrogen fuel cell-based generation source
InactiveUS20170301970A1Solve the large power consumptionLittle powerElectrolysis componentsPV power plantsDoped grapheneElectrical battery
System comprising an element for capturing and transforming external light into electricity based on the use of doped graphene; an electricity management control board to which are connected: a battery and a generator for supplying the current needed by a hydrolysis machine connected to the generator; a hydrogen tank connected to the hydrolysis machine; an oxygen tank connected to the hydrolysis machine, for use in space-based systems, which can be vented through an exhaust; a fuel cell or hydrogen cell connected to the hydrogen and oxygen tanks and a water deposit connected on one side to the hydrogen cell from which it receives the water generated and on the other to the hydrolysis machine to which it supplies the water. A self-sufficient or autonomous generation system is achieved.
Owner:NICOLAS ANTEQUERA RODRIGUEZ
Combined purification system for efficiently treating rural domestic sewage
ActiveCN113880250ARealize precise dosingAchieve sustained releaseWater treatment parameter controlWater treatment compoundsConstructed wetlandSewage
The invention discloses a combined purification system for efficiently treating rural domestic sewage. The system comprises a water inlet device, a sewage pretreatment device, a facultative pond, a constructed wetland system and a shallow water plant pond, adopts a facultative pond, constructed wetland and shallow water plant pond combined process, and is combined with a biological membrane treatment technology, so that the removal efficiency of nitrogen and phosphorus is enhanced. A biological membrane system with a special structure can be used for microporous aeration and biological membrane formation, a carbon source is also provided for denitrification reaction, and accurate feeding and continuous release of the carbon source are realized in an ecological pond and an artificial wetland. A special annular structure is utilized, so that the occupied area of the treatment process is saved, and the effect of beautifying the country is also achieved.
Owner:HOHAI UNIV
Leakage detection device and leakage detection method for lithium ion battery
PendingCN113218589ASimple structureEasy to useDetection of fluid at leakage pointEngineeringWeld seam
The invention provides a leakage detection device for a lithium ion battery, which comprises a loading disc structure, a battery is loaded on the loading disc structure, the loading disc structure is detachably mounted on a test platform, a test hole corresponding to the battery is formed in the test platform, and test paper is arranged in the test hole. The loading disc structure loaded with the battery is mounted on the test platform after being positively mounted or turned over, so that the battery is in contact with and clings to the test paper after being inverted, and the test paper is used for detecting whether a leak hole exists in a welding seam of the battery to cause electrolyte leakage or not. The leakage detection device is used for conveniently, quickly and efficiently screening the lithium ion batteries subjected to laser welding and screening the unqualified lithium ion batteries with leakage holes in welding seams, so that the risk of combustion or explosion caused by electrolyte leakage is avoided.
Owner:湖南领湃科技股份有限公司 +4
Method for producing low-substituted hydroxypropylcellulose
Provided is a method for producing low-substituted hydroxypropylcellulose in which depolymerization capable of achieving a target viscosity in a short time is carried out safely after an etherification reaction step. More specifically, provided is a method for producing low-substituted hydroxypropylcellulose having a degree of hydroxypropoxy substitution of from 9.5 to 16.0% by weight, comprising at least a step of reacting alkali cellulose with an etherifying agent and a step of carrying out depolymerization after the reaction.
Owner:SHIN ETSU CHEM IND CO LTD
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