36results about How to "Avoid irreversible loss" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.