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36results about How to "Avoid irreversible loss" patented technology
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Solar aided carbon dioxide trapping integrated system
ActiveCN103752142ATake full advantage of high heat collection efficiencyReduced capture efficiencyCarbon compoundsSolar heat devicesReboilerTrapping
The invention discloses a solar aided carbon dioxide trapping integrated system, which mainly comprises three parts, i.e. a power generation subsystem, a carbon dioxide trapping subsystem and a solar heat collection subsystem, wherein the subsystems are connected mainly through a boiler feed water heater, a reboiler and a flue gas pretreatment device to form the whole integrated system. According to the system, the high and low energy requirements of related parts among the solar heat collection subsystem, the power generation subsystem and the carbon dioxide trapping subsystem are reasonably allocated and integrated in different connecting ways at the heat output end of the solar heat collection subsystem to realize the gradient utilization of energy, so that the energy consumption of extraction of vapor from a steam turbine of a power plant can be greatly reduced, the stability of the power plant can be maintained, the dual effects of utilizing renewable energy resources and reducing the carbon dioxide emission of the power plant are achieved, and the large-scale application of solar energy and an integrated flue gas trapping technology in China are forcefully promoted.
Owner:TIANJIN UNIV
Low-temperature multi-effect seawater desalination process
InactiveCN1837075AEfficient recyclingIncrease temperatureGeneral water supply conservationSeawater treatmentSpecial designEnergy recovery
This invention refers to a method about low-temperature multiple-effect desalination of sea water, especially about a new method which effectively applied thermal pumping power-saving technology to desalination of sea water. The desalination of sea water system which apply this method has n effect evaporator(n=2-50) and one condensator aggregately, containing six systems of feeding seawater, recirculated salt water, product water, vacuum, incoagulable gas removal, thermal pumping circulation and starting heating in addition. This invention is based on irreversible thermodynamics principle, via organic integration of evaporator, condensator and low-temperature multiple-effect desalination of sea water system in closed circuit thermal pumping system, as well as special design of energy recovery tache in low-temperature multiple-effect desalination of sea water, decreasing irreversible loss of diversified thermal transmission course which the desalination of sea water refers to in maximum limit, sequentially letting the entropy increasing of whole desalination of sea water course be the least, realizing efficient energy-saving desalination of sea water course.
Owner:QINGDAO UNIV
High-safety all-solid-state lithium ion battery and production method thereof
ActiveCN103730684AImprove securityImprove flammabilityFinal product manufactureSecondary cellsSolid state electrolyteAll solid state
The invention discloses a high-safety all-solid-state lithium ion battery which comprises solid electrolyte, a positive plate and a negative plate, wherein the positive plate and the negative plate are overlapped with each other; the solid electrolyte is arranged between the positive plate and the negative plate adjacent to each other; the solid electrolyte is formed by mixing Li1+aAaSibO4 (A is one of Al, Mn, Ni and Ti, a is more than 1 and less than 2, and b is less than or equal to 2), an adhesive and a solvent according to a ratio of t:h:(1-t-h), wherein t is 30-55 percent, and h is 5-17 percent. The original combustible electrolyte and diaphragm are replaced by the noncombustible solid electrolyte, so that the risk that the battery is on fire is effectively reduced. When the solid electrolyte is in a slurry state, the battery is assembled, good contact between the solid electrolyte and a pole piece can be guaranteed, and ion diffusion impedance is reduced. The invention also discloses a method for producing the high-safety all-solid-state lithium ion battery.
Owner:HUBEI JINQUAN NEW MATERIALS CO LTD
Thermodynamic cycle system and method for ammonia water mixed working medium power cooling combined supply
InactiveCN102721230AAchieve the goal of energy saving and emission reductionRealize cascade utilizationClimate change adaptationEnergy efficient heating/coolingSystem integrationBoiling process
The invention discloses a thermodynamic cycle system and method for ammonia water mixed working medium power cooling combined supply. Ammonia water mixture serves as a working medium, and medium-and-low temperature heat serves as a heat source; the thermodynamic cycle system includes a power cycle and a refrigerating cycle; and the power cycle taking the ammonia water mixture as the working medium, the characteristic of temperature-variable evaporation of the working medium is utilized to be excellently matched with a sensible heat source, meanwhile, the temperature-variable condensation of the working medium is utilized to provide heat for the re-boiling process of a tower kettle and the preheating process for partial feeding material of a rectifying tower of the refrigerating cycle. Through the system integration, the high-temperature part of the external heat source is utilized for power cycle, the low-temperature part of the external heat source and the heat extraction of the power cycle are utilized for the refrigerating cycle, the matched temperature and stepped utilization of heat are realized, and compared with the typical dividing system, the performance of the system is improved.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Composite positive pole material for lithium ion battery and preparation method of the composite material
InactiveCN102610803AImprove cycle performanceAvoid irreversible lossCell electrodesLithium iron phosphateSulfur
The invention provides a composite positive pole material for a lithium ion battery, belonging to the technical field of composite functional materials. The composite positive pole material for the lithium ion battery is formed by compounding LiFePO4 as a compound with elemental sulfur, wherein LiFePO4 is a porous compound with nanometer pores; and elemental sulfur is present in the nanometer pores of LiFePO4. According to the invention, Li3PO4, FeC2O4.2H2O and (NH4)2HPO4 serve as the raw materials to prepare porous lithium iron phosphate (LiFePO4) by a hydrothermal template method; and a method of compounding gaseous sulfur with porous lithium iron phosphate is adopted to prepare the composite positive pole material. The elemental sulfur is fixed in the pores of LiFePO4, therefore, the irreversible loss of active materials caused by dissolution of the discharging product of sulfur into an electrolyte can be prevented, and the recycling performance of the positive pole material and the utilization rate of active materials can be improved. Meanwhile, the porous LiFePO4 serving as the supporting material of elemental sulfur is a good positive pole material for the lithium ion battery, and contributes to the specific capacity of the whole composite positive pole material.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
System utilizing absorption heat pump to recover exhaust steam waste heat of power station and heat boiler supply water
ActiveCN103090357AImprove efficiencyLess investmentHeat recovery systemsSteam engine plantsCooling towerPower station
The invention relates to a system utilizing an absorption heat pump to recover exhaust steam waste heat of a power station and heat boiler supply water. The system comprises a generator set and the absorption heat pump. The generator set comprises a boiler, an electric generator, a steam turbine, a steam condenser and a cooling tower, wherein the boiler is capable of generating high-temperature high-pressure steam, the steam turbine rotates to drive the electric generator to generate power, and the steam condenser and the cooling tower utilize steam or part of the steam behind the steam turbine to cool. The absorption heat pump comprises a generator, an evaporator, an absorber and a condenser. When the generator set and the absorption heat pump are in use, after the high-temperature high-pressure steam generated from the boiler passes through the steam turbine, one part of exhaust steam passes through the evaporator of the absorption heat pump, extracted steam of the steam turbine passes through the generator of the absorption heat pump, the absorption heat pump is driven to run by the extracted steam of the generator set, the exhaust steam waste heat of the generator set is comprehensively utilized by the absorption heat pump so as to improve utilization rate of the waste heat, and the heat energy after running of the absorption heat pump is utilized to preheat the boiler supply water of the generator set.
Owner:浙江和帆企业管理有限公司
Power generation device and method for recovering heat of cold source of power plant
PendingCN109854314AFull recoveryIncrease temperatureSteam useMachines using refrigerant evaporationIsolation valveEngineering
The invention discloses a power generation device and method for recovering the heat of a cold source of a power plant. The power generation device comprises a Rankine cycle power generation device, aCO2 trans-critical-jet power generation device and a jet heat pump unit, the Rankine cycle power generation device is connected with a first injector of the CO2 trans-critical-jet power generation device through a large steam turbine and a small steam turbine, the Rankine cycle power generation device is connected with the jet heat pump unit through a large steam turbine and a small steam turbine, and the jet heat pump unit is connected with the CO2 trans-critical-jet power generation device. A 11th flow adjusting valve and sixth, seventh and eighth isolation valves are arranged in the jet heat pump unit, the low-temperature and low-pressure CO2 flowing out of a throttle valve can be made to directly flow into an organic work medium condenser to carry out the heat exchange with CO2 gas exhaust, the temperature of CO2 entering into a secondary evaporator can be reduced, the heat source temperature of the outlet of the secondary evaporator is reduced accordingly, the temperature of thegas exhaust entering a steam condenser is reduced accordingly, and the great significance is achieved for the saving of the power consumption of a circulating pump in a traditional Rankine cycle, thereducing of the area of the steam condenser and the reducing of the circulating cooling water amount.
Owner:国能宿州热电有限公司
Supercritical carbon dioxide coal-fired circulating fluidized bed boiler, power generation system and power generation method
ActiveCN108180470AReduce thermal deviationGuaranteed uptimeFluidized bed combustionSteam engine plantsAir preheaterSuperheater
The invention discloses a supercritical carbon dioxide coal-fired circulating fluidized bed boiler, a power generation system and a power generation method. The supercritical carbon dioxide coal-firedcirculating fluidized bed boiler comprises a hearth, a separator, a tail flue and an externally-arranged type heat exchanger located in a material back section of the separator. A cooling wall and anintermediate-temperature overheater are arranged in the hearth. A high-temperature reheater and a low-temperature overheater are arranged in the externally-arranged type heat exchanger, wherein the low-temperature overheater communicates with the cooling wall and the intermediate-temperature overheater. A low-temperature reheater, a high-temperature overheater, an upper-level economizer, a lower-level economizer and an air preheater are arranged in the tail flue, wherein the high-temperature overheater communicates with the intermediate-temperature overheater, the low-temperature reheater communicates with the high-temperature reheater. The working medium of the boiler is supercritical carbon dioxide. By the adoption of the supercritical carbon dioxide coal-fired circulating fluidized bedboiler, the wall temperature of the cooing wall can be effectively controlled, it is guaranteed that the boiler safely and reliably operates, and the heat efficiency is high; a power generator set tends to be miniature, a higher load response speed is obtained, the deep peak load regulation adaptability is high, the advantages of coal resources are taken into full play, the energy utilization rate is improved, and energy safety is guaranteed.
Owner:SOUTHEAST UNIV
Single-tank immersion type heat exchange molten salt energy storage and heating device
InactiveCN109631645AAvoid irreversible lossAvoid creating problemsHeat storage plantsIrreversible lossCirculating pump
The invention discloses a single-tank immersion type heat exchange molten salt energy storage and heating device. The single-tank immersion type heat exchange molten salt energy storage and heating device comprises a molten salt heat storage tank, wherein a molten salt electric heater is installed at the bottom of the molten salt heat storage tank, a first heat exchanger is arranged in the moltensalt heat storage tank and is always immersed in molten salt medium, an inlet reserved flange of the first heat exchanger is connected with a heat-transfer oil circulating pump, and an outlet of the first heat exchanger is inserted into a heat-transfer oil heat exchange tank; and a second heat exchanger is arranged in the heat-transfer oil heat exchange tank, and the second heat exchanger is immersed in heat-transfer oil. The single-tank immersion type heat exchange molten salt energy storage and heating device has the advantages that irreversible loss caused by large temperature difference heat exchange is avoided, the manufacturing problem of a large temperature difference heat exchanger is solved, and a heat exchange system is more stable.
Owner:葛洲坝能源重工有限公司
A preparation method and application of a lithium sulfide battery positive electrode
ActiveCN109192967ASolve the shuttle problemImprove electrical performanceNon-aqueous electrolyte accumulator electrodesLi-accumulatorsThiazoleLithium–sulfur battery
The invention belongs to the field of lithium sulfide battery positive electrode material and specifically relates to a preparation method and application of a lithium sulfide battery positive electrode. The lithium sulfide battery positive electrode comprise a positive electrode active material, a stabilizer, a conductive agent and a bind, wherein that positive electrode active material is insoluble sulfur. The stabilizer is a compound capable of forming a common electron pair with sulfur atoms at both ends of the positive electrode active material, preferably at least one of a halogen, an organic halide and a thiazole compound. The positive electrode active material of the invention greatly reduces the dissolution of the polysulfide, and the insoluble sulfur stabilizer used together caneffectively restrain the generation of dead sulfur and the shuttle effect in the electrode reaction process. The positive electrode assembled lithium sulfide battery provided by the invention has highfirst discharge specific capacity and good cycle performance. In addition, the preparation method of the sulfide positive electrode provided by the invention is low in cost, simple in operation and easy to realize large-scale commercial manufacture.
Owner:CENT SOUTH UNIV
Tour measuring system for aquaculture water of pelagic fishery based on Beidou communication system
PendingCN109246641AEnsure real-time linkageSafe collectionParticular environment based servicesOpen water surveyBuoyFuselage
The invention discloses a tour measuring system for the aquaculture water of pelagic fishery based on a Beidou communication system. The system comprises a main unit buoy system and an underwater touring system. The main unit buoy system includes a buoy main body, an energy storage system disposed in the buoy main body, an energy absorbing system which is used for absorbing solar energy and disposed at an upper portion of the buoy main body, a monitoring platform real-time linkage system disposed at a central portion of the buoy main body, warning columns around the energy absorbing system, camera systems at upper ends of the warning columns, a fixing mechanism which is fixed at the bottom of the buoy main body and is used for fixing with the underwater touring system, and a wireless charging module. The underwater touring system includes an underwater touring device, an energy system and a pumping system which are both placed at the rear of the underwater touring main body, a retractable working arm placed at the middle of the underwater touring main body, a lighting system, an underwater image sensor and a hydrological detection module, wherein the lighting system, the underwaterimage sensor and the hydrological detection module are placed at the front of the underwater touring main body.
Owner:JIANGSU POLYTECHNIC COLLEGE OF AGRI & FORESTRY
Regenerating method of catalytic conversion catalyst
ActiveCN104437674AAvoid loss of surface areaReduce the frequency of charcoal regenerationMolecular sieve catalystsCatalyst regeneration/reactivationChemistryMethanol
The invention discloses a regenerating method of a catalytic conversion catalyst. The regenerating method comprises the following steps: a catalyst which is transferred from a reactor firstly enters a first generator to be blown and regenerated by first regenerated gas; and a primary regenerant at the outlet of the first generator is conveyed to a catalyst flow distributor and is divided into two material flows which respectively enters a second regenerator and the reactor, wherein the flow of the primary regenerant flow entering the reactor accounts for 1-100% of the total flow of the primary regenerant in the flow and a part of primary regenerant enters a second regenerator to be secondarily regenerated by virtue of second regenerated gas to obtain a secondary regenerant which is combined with the primary regenerant flow and enters the reactor together. According to the regeneration method disclosed by the invention, the capacity of the existing reactor can be effectively improved, frequent charking regeneration of the catalyst is avoided and the regenerating temperature and temperature rise are reduced, and the total service life of the catalyst is prolonged. Moreover, the flow rate of the catalyst in different mobile bed reactors is independently regulated, and the regenerating method can be used in industrial production of methanol to propylene.
Owner:ZHEJIANG UNIV
Lithium ion battery peak power prediction method considering heat effect influence
ActiveCN112526350AAccurate peak powerAvoid irreversible lossElectrical testingPower batteryElectrical battery
The invention discloses a lithium ion battery peak power prediction method considering heat effect influence, and relates to the technical field of power battery systems. The objective of the invention is to solve the problem of inaccurate peak power obtained by using an electrochemical model in the prior art. The method comprises the steps of establishing a simplified electrochemical model of a lithium ion battery; performing parameter identification on the simplified electrochemical model of the lithium ion battery to obtain identification parameters; obtaining an internal variable of the lithium ion battery; obtaining the terminal voltage of the single lithium ion battery, the internal temperature of the battery at different moments and the maximum discharge rate; and respectively finding three critical discharge rates between the initial discharge rate and the maximum discharge rate, selecting a minimum value from the three found critical discharge rates, and obtaining the peak power of the lithium ion battery in combination with the terminal voltage average value of the single lithium ion battery at different moments. The method is used for obtaining battery peak power so as to protect the service life of the battery.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL +1
Manufacturing method of lithium ion battery capable of resisting storage discharge to zero volt
PendingCN111864277ANo permanent damageAvoid permanent damageFinal product manufactureElectrode carriers/collectorsElectrical batteryCopper foil
The invention belongs to the technical field of chemical engineering. The invention especially relates to a lithium ion battery resistant to storage discharge to zero volt and a battery discharge process test. The invention discloses a reversible lithium ion battery. Discharging can be performed until the voltage between a cathode and an anode is zero volt, and the battery cannot be damaged perpetually; the novel anode current collector is provided, a titanium foil is selected as the anode current collector, and the dissolving potential of the titanium foil is higher than the zero-point crosspotential of the cathode and the anode of the battery, so that the permanent damage to the battery due to dissolution and precipitation of the copper foil in the process of discharging the lithium ionbattery to 0V is avoided.
Owner:苏州合睿新能源科技有限公司
Low-temperature refrigerator with double-absorber
InactiveCN102062493AImprove performance efficiencyAvoid irreversible lossClimate change adaptationEnergy efficient heating/coolingIndustrial wasteRefrigerant
The invention discloses a low-temperature refrigerator with a double-absorber, which comprises an automatic overlaid refrigerating module and a solution circulating module. The solution circulating module adopts a double-absorber. In the invention, the low-temperature refrigerator with the double-absorber avoids irreversible loss of the refrigerating fluid in a mixing process and intensifies the absorption process of the absorber by using the characteristic of azeotropic refrigerating fluid based on the principle of automatic overlaid refrigeration so as to acquire lower refrigeration temperature and higher refrigeration efficiency, and the low-temperature refrigerator with the double-absorber can be driven by renewable heat energy, such as solar energy, terrestrial heat, industrial waste heat, afterheat and the like or low-level heat energy so as to acquire the refrigeration temperature below -60 to -70 DEG C that cannot be reached in the conventional absorbing type refrigerator, thereby greatly widening the application range of the absorbing type refrigerator in the field of cryogenic refrigeration. The low-temperature refrigerator with the double-absorber has the advantages of wide refrigeration temperature range, high efficiency, stable and reliable performance and compact structure.
Owner:ZHEJIANG UNIV
Microscopic examination method used for crystalline silicon photovoltaic module
InactiveCN107769730AThe detection operation steps are reasonable and clearThe detection method is simplePhotovoltaic monitoringPhotovoltaic energy generationBackplaneRapid detection
The invention discloses a microscopic examination method used for a crystalline silicon photovoltaic module. The microscopic examination method comprises the following steps of putting the photovoltaic module on a microscopic examination table, turning on an LED searchlight to be aligned to a backboard of the photovoltaic module, and performing examination on the backboard and then on an EVA adhesive film; next, performing examination on an EPE bus bar, enabling the LED searchlight to be aligned to the front surface of the photovoltaic module, and performing examination operation through the mirror surface of the microscopic examination table; and performing examination on a bar code, then on a solder strip bus bar and finally on a battery piece, and after the product is qualified, conveying the product to the next working procedure. The microscopic examination method has reasonable and clear operation steps, can perform effective and quick detection on each part of the photovoltaic module and can solve the quality problem on the surface of the photovoltaic module in time; and the detection method is simple, less in adopted tools and equipment, high in detection efficiency, low incost, and capable of judging qualification of products based on certain standard, so that a series of loss caused by flowing of unqualified products to the market can be avoided, and high use and popularization values are achieved.
Owner:HEFEI LIUMING NEW ENERGY TECH
A solar-assisted carbon dioxide capture integrated system
ActiveCN103752142BTake full advantage of high heat collection efficiencyReduced capture efficiencyCarbon compoundsSolar heat devicesReboilerTrapping
The invention discloses a solar aided carbon dioxide trapping integrated system, which mainly comprises three parts, i.e. a power generation subsystem, a carbon dioxide trapping subsystem and a solar heat collection subsystem, wherein the subsystems are connected mainly through a boiler feed water heater, a reboiler and a flue gas pretreatment device to form the whole integrated system. According to the system, the high and low energy requirements of related parts among the solar heat collection subsystem, the power generation subsystem and the carbon dioxide trapping subsystem are reasonably allocated and integrated in different connecting ways at the heat output end of the solar heat collection subsystem to realize the gradient utilization of energy, so that the energy consumption of extraction of vapor from a steam turbine of a power plant can be greatly reduced, the stability of the power plant can be maintained, the dual effects of utilizing renewable energy resources and reducing the carbon dioxide emission of the power plant are achieved, and the large-scale application of solar energy and an integrated flue gas trapping technology in China are forcefully promoted.
Owner:TIANJIN UNIV
A dual-injection and double-regeneration combined synergistic refrigeration cycle system for dual-temperature refrigerators
ActiveCN103808101BIncrease boost capacityImprove cooling efficiencyFluid circulation arrangementCooling fluid circulationDual injectionVapor–liquid separator
The invention discloses a dual-jet and dual-backheating combined synergistic refrigerating cycle system for a dual-temperature refrigerator. The dual-backheating combined synergistic refrigerating cycle system for the dual-temperature refrigerator is characterized by comprising a compressor, an exhaust backheating device, a condenser, a suction backheating device, a first capillary tube, a second capillary tube, a refrigerating chamber evaporator, a first injector, a second injector, a freezing chamber evaporator and a gas-liquid separator. By the adoption of the dual-backheating combined synergistic refrigerating cycle system for the dual-temperature refrigerator, expansion work and useful energy which are generated in the process of throttling can be fully recycled and utilized, and the efficiency and the performance of the refrigerating cycle system for the dual-temperature refrigerator are remarkably improved.
Owner:CHANGHONG MEILING CO LTD
A full-load plant steam system for thermal power units
ActiveCN103499021BHigh thermal efficiencyAdapt to different load requirementsPipeline systemsEngineeringHigh pressure
Provided is a full-load auxiliary steam system of a thermal power unit. A valve controlling a high-pressure steam source to enter a high-pressure steam pipe is arranged on the high-pressure steam pipe, a valve controlling low-pressure injected steam is arranged on a low-pressure steam pipe, the high-pressure steam pipe is connected with a small flow ejector and a large flow ejector, and the low-pressure steam pipe is connected with the small flow ejector and the large flow ejector, wherein the small flow ejector and the large flow ejector are connected in parallel, and the outlet of the small flow ejector and the outlet of the large flow ejector are connected with an auxiliary steam master pipe. The full-load auxiliary steam system of the thermal power unit avoids the irreversible losses of steam extraction throttling caused by the switching of the auxiliary steam among different steam sources due to the frequent change of load in the actual running process of the thermal power unit, and thus improves the thermal efficiency of the thermal power unit. The full-load auxiliary steam system of the thermal power unit can be used for the design of newly-built units, can also be used for the transformation of existing units, and has wide application prospects.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
Supercritical carbon dioxide coal-fired circulating fluidized bed boiler, power generation system and power generation method
ActiveCN108180470BGuaranteed uptimeHas emissionsFluidized bed combustionSteam engine plantsAir preheaterSuperheater
Owner:SOUTHEAST UNIV
A process for producing propylene using oxygen-containing compounds as raw materials
ActiveCN104876784BSolve the contradiction of high yield but fast deactivationAtom utilization is highHydrocarbon from oxygen organic compoundsEthylene productionMolecular sieveEnergy consumption
The invention discloses a process for producing propylene by taking oxygenated compounds as raw materials. The process comprises the steps of converting methanol in the oxygenated compounds into dimethyl ether to the maximum extent, then, carrying out contact reaction on dimethyl ether and a molecular sieve based catalyst under a high-severity condition, and next, delivering the reaction product into a separation system; introducing residual components except for propylene to a hydrocarbon conversion reaction region to further generate propylene; and returning non-propylene parts as circular logistics to the hydrocarbon conversion reaction region to carry out circular reaction, wherein the catalyst used in the hydrocarbon conversion reaction region is from a carbon deposition agent obtained after catalyzing the oxygenated compounds to react under the high-severity condition. By using the process, the yield of propylene can be effectively increased, the flow of the circular logistics can be reduced, the energy consumption of the process can be reduced, and the total life of the catalyst can be favorably prolonged; and the process can be used in industrial production of propylene prepared from methanol.
Owner:ZHEJIANG UNIV
Lithium-ion battery peak power prediction method considering thermal effect
ActiveCN112526350BAccurate peak powerAvoid irreversible lossElectrical testingPower batteryElectrical battery
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL +1
A non-heat storage adiabatic compressed air energy storage method and system
ActiveCN110821591BGuaranteed uptimeAvoid irreversible lossEnergy storageSteam engine plantsSyngasAir compression
The invention discloses a thermal insulation compressed air energy storage method and system without heat storage. The compressed air energy storage subsystem and the compressed heat absorption subsystem are respectively connected with the compressed air energy release subsystem; the compressed air energy storage subsystem utilizes renewable The energy or surplus electric energy converts atmospheric air in the environment into high-pressure air through the compressor; the compression heat absorption subsystem uses the compression heat generated during the compression process to pyrolyze the liquid fuel into syngas and store it in the syngas storage tank; The compressed air energy release subsystem mixes and burns high-pressure air and syngas in the combustion chamber, and uses the generated high-temperature and high-pressure flue gas to drive the turbine unit to do work and output electric energy. The invention not only can realize the function of the compressed air energy storage system, but also can improve the energy grade of compression heat and the energy utilization rate of the system in the energy storage process.
Owner:XI AN JIAOTONG UNIV
Coating method of nickel cobalt lithium manganate positive electrode material
PendingCN114551860AImprove cycle performanceAvoid irreversible lossCell electrodesLithium electrodeManganate
The invention relates to the technical field of lithium ion batteries, in particular to a coating method of a nickel cobalt lithium manganate positive electrode material. A screen coated with metal salt gel is used for carrying out coating treatment on nickel cobalt lithium manganate positive electrode material particles, the metal salt gel forms a thin film in meshes of the screen, the coating treatment is that the nickel cobalt lithium manganate positive electrode material particles make contact with the thin film in the falling process, and the thin film is stretched and completely wraps the nickel cobalt lithium manganate positive electrode material particles. The nickel cobalt lithium manganate positive electrode material particles fall off; and forming a coating layer on the surface of the nickel cobalt lithium manganate positive electrode material particle. The defect that a uniform coating layer cannot be formed by dry physical coating is avoided, a uniform and compact'protective layer 'is formed on the surface of the nickel cobalt lithium manganate positive electrode material, and the cycle performance of a corresponding battery cell is effectively improved.
Owner:BATTERO TECH CORP LTD
A combined solar and geothermal energy assisted carbon dioxide capture system
ActiveCN105561742BTake full advantage of high heat collection efficiencyReduced capture efficiencySolar heating energyCarbon compoundsFlue gasEngineering
The invention discloses a carbon dioxide capture system assisted by the combination of solar energy and geothermal energy. The system is mainly composed of a power plant generations system, a carbon dioxide capture system, a solar energy collector system and a geothermal energy system. Carbon dioxide in power plant flue gas is removed through the carbon dioxide capture system, and heat needed by a reboiler in the carbon dioxide capture system is provided by the combination of solar energy and geothermal energy; on the condition that solar energy is sufficient in the daytime, the heat of the reboiler is provided by the solar energy collector system; when solar energy is insufficient or at night, and the heat needed by the reboiler is provided with geothermal energy; by coupling solar energy and geothermal energy, stable operation of the capture system is achieved, reduction of output power caused by steam extraction of a power plant is relieved, defects caused by defects of renewable energy sources in the renewable energy source utilization process are overcome, the dual effects of carbon dioxide capture and renewable energy source emission reduction are achieved, and integrated development of renewable energy sources and a traditional power system is promoted.
Owner:TIANJIN UNIV
Method for monitoring achievement rate of fuse burning in chip test
ActiveCN105470159BTimely detection of abnormalities in yield rateAvoid irreversible lossSemiconductor/solid-state device testing/measurementTruth valueTruth table
Owner:WUXI ZHONGWEI TENGXIN ELECTRONICS
A multi-temperature zone and large temperature cross-span heat pump circulation system using ejector efficiency
ActiveCN110986414BAvoid irreversible lossImprove performanceCompressorCompression machinesCondenser (heat transfer)Heat pump
The invention discloses a multi-temperature-zone large-temperature-span heat pump circulating system adopting an injector for efficiency improvement. The multi-temperature-zone large-temperature-spanheat pump circulating system comprises a compressor with a middle air extraction function, series compressors and parallel compressors; a first condenser is used for heating of a low-temperature zone,and an inlet is connected with an air extraction opening of the compressor; a second condenser is used for heating of a high-temperature zone, and an inlet is connected with an air exhaust opening ofthe compressor; a high-pressure side inlet of a reheater is connected with an outlet of the first condenser, and a high-pressure side outlet of the reheater is connected with a throttling device; aninlet of a first evaporator is connected with an outlet of the throttling device, and an outlet of the first evaporator is connected with a secondary flowing inlet of the injector; an inlet of a second evaporator is connected with an outlet of the injector, and an outlet of the second evaporator is connected with a low-pressure side inlet of the reheater; and a nozzle inlet of the injector is connected with an outlet of the second condenser, and an outlet of the injector is connected with the inlet of the second evaporator. The circulating system can effectively utilize the middle air extraction function of the compressor to achieve double condensing pressure and condensing temperature and provide double temperature zones and large-temperature-difference heat supply, irreversible losses ofheat transfer of the evaporators can be decreased, and the whole performance of the system can be effectively improved.
Owner:XI AN JIAOTONG UNIV
Space-division system for highly effectively using cold energy of liquefied natural gas
ActiveCN101532768BSafe storageSimple process organizationSolidificationLiquefactionNitrogenEngineering
The invention discloses a space-division system for highly effectively using cold energy of liquefied natural gas (LNG), comprising an LNG-nitrogen heat exchanger and a nitrogen-nitrogen heat exchanger. The pressure nitrogen is used as the closed circulating medium. The liquefied natural gas transfers the cold energy to the circulating nitrogen in the LNG-nitrogen heat exchanger. The circulating nitrogen transfers the cold energy to the pressure nitrogen of a space-division rectification tower in the nitrogen-nitrogen heat exchanger. The space division is not in contact with the circulating medium directly so as to avoid the danger caused by the natural gas entering a space-division device. The circulating nitrogen is cooled by the LNG cold energy so as to reduce the compression power consumption and obtain super-critical pressure nitrogen. In order to make up the disadvantage of the high-grade cold energy of LNG, one path of the high-pressure liquid nitrogen is throttled to the intermediate-pressure pressure, another path of the high-pressure liquid nitrogen is expanded by an expander to recover energy and then partially enters the LNG-nitrogen heat exchanger for deeply superbly cooling the high-pressure liquid nitrogen, and the rest liquid nitrogen enters the space-division system. The number of the channels of the heat exchanger is seldom, the flow organization is simple, safe and reliable, the operation and control are simple, the cost is low, and the application range is wide.
Owner:四川空分设备(集团)有限责任公司
A kind of regeneration method of catalytic conversion catalyst
ActiveCN104437674BRestore activityAvoid lostMolecular sieve catalystsCatalyst regeneration/reactivationCatalytic transformationDistributor
The invention discloses a regenerating method of a catalytic conversion catalyst. The regenerating method comprises the following steps: a catalyst which is transferred from a reactor firstly enters a first generator to be blown and regenerated by first regenerated gas; and a primary regenerant at the outlet of the first generator is conveyed to a catalyst flow distributor and is divided into two material flows which respectively enters a second regenerator and the reactor, wherein the flow of the primary regenerant flow entering the reactor accounts for 1-100% of the total flow of the primary regenerant in the flow and a part of primary regenerant enters a second regenerator to be secondarily regenerated by virtue of second regenerated gas to obtain a secondary regenerant which is combined with the primary regenerant flow and enters the reactor together. According to the regeneration method disclosed by the invention, the capacity of the existing reactor can be effectively improved, frequent charking regeneration of the catalyst is avoided and the regenerating temperature and temperature rise are reduced, and the total service life of the catalyst is prolonged. Moreover, the flow rate of the catalyst in different mobile bed reactors is independently regulated, and the regenerating method can be used in industrial production of methanol to propylene.
Owner:ZHEJIANG UNIV
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