390 results about "Oxygen storage" patented technology

The invention discloses a high-pressure combustion combined heat and power generation energy storage system and method for hydrogen and oxygen production through electrolysis, and relates to the field of hydrogen energy storage. After the electrolytic cell produces high-pressure hydrogen and oxygen, the high-pressure hydrogen and oxygen are stored in the hydrogen / oxygen storage tank, the system can operate in a hydrogen / oxygen mode, and in the oxygen mode operation, the hydrogen and oxygen steam mixed gas from the oxygen storage tank and the hydrogen / oxygen evaporation compressor are combusted in the high-pressure combustion chamber to generate superheated steam, and then the superheated steam enters the expansion turbine to do work; due to excessive oxygen, dead steam after acting is separated into two working media through a gas-liquid separator, that is, gas enters a cooler to be cooled and then returns to a combustion chamber through a hydrogen / oxygen evaporation compressor, drainage water generated after liquid enters a heat supply heat exchanger is pressurized through a water pump and then enters a high-temperature combustion chamber, and therefore clean utilization of hydrogen energy and cyclic regeneration of the working media are achieved. The system can realize high power generation efficiency and excellent environmental protection performance, and is suitable for regions requiring stable consumption of fluctuating renewable energy sources, power and heat supply and the like.

The invention relates to the technical field of Internet of Things sensing, in particular to a medical oxygen storage and distribution method and system based on the Internet of Things. The method comprises the following steps: acquiring use process data of the recycled medical oxygen storage container; analyzing a pressure decline curve and a use frequency mode of each container when oxygen is taken by using the use process data, and establishing use behavior characteristics; comparing the stability differences of the use behavior characteristics of different containers to obtain container stability grading data; counting accumulated use times and load intensity change of each container according to the container stability grading data; calculating a fatigue cumulative value of each container based on the cumulative number of uses and the load intensity change; and combining the fatigue accumulated value with the container stability grading data to evaluate the container reliability, and generating a container reliability sorting table. According to the invention, by analyzing the use behavior characteristics and the fatigue accumulation value of the container, the container with potential risk can be identified.

The invention discloses a handheld oxygen generator in the field of oxygen generation equipment, which comprises an air pump assembly, an air inlet assembly, an air outlet assembly, molecular sieve tanks and an oxygen storage tank, a pressure preparation gas tank is arranged on a gas path structure between the two molecular sieve tanks and the oxygen storage tank, and oxygen-enriched gas adsorbed by the molecular sieve tanks firstly enters the pressure preparation gas tank to be stored and then enters the pressure preparation gas tank to be stored; and after the gas in the pressure preparation gas tank reaches the required pressure, the gas enters the oxygen storage tank. In the oxygen production process, gas can generate standby pressure in the standby pressure gas tank, so that the pressure of the molecular sieve tank is kept in a high-pressure range, the adsorption capacity of the molecular sieve on nitrogen in air is improved, the oxygen content of the oxygen production gas is improved, and the oxygen production amount can still be met under the condition that the filling amount of the molecular sieve is reduced; therefore, the sizes of the molecular sieve tank and the whole oxygen generator are reduced. In addition, oxygen is collected through the pressure preparation gas tank, oxygen is conveyed to the oxygen storage tank after certain pressure preparation is achieved, oxygen in the oxygen storage tank can be promoted to be collected, the pressure is increased, and the oxygen output requirement in the oxygen using state is met.

The invention discloses a cerium-zirconium-based high-entropy oxide as well as a preparation method and application thereof. According to the cerium-zirconium-based high-entropy oxide, cerium and zirconium serve as main bodies, and meanwhile rare earth elements (lanthanum, praseodymium, neodymium and samarium) and transition metal elements (manganese, iron, cobalt, nickel, copper and zinc) are introduced to form a high-entropy solid solution with the equal molar ratio and containing 3-8 kinds of metal. In the cerium-zirconium-based high-entropy oxide, the cerium element and the zirconium element respectively account for 20%-40% of the total amount, and the other elements are respectively 10%-30% in an equimolar ratio. The cerium-zirconium-based high-entropy oxide catalyst prepared by the invention has excellent oxygen storage and release capacity and CO oxidation capacity, and the CO complete conversion temperature is 181 DEG C. The method adopts a simple coprecipitation process, is mild in condition and low in cost, and is suitable for large-scale application in the field of tail gas purification.

The utility model belongs to the field of renewable energy sources and energy conservation and environmental protection, and particularly relates to an integrated portable oxygen generation device which comprises a lithium ion battery, a PEM electrolytic tank, a hydrogen fuel cell, a photo-thermal interface evaporation device and an oxygen storage device. The lithium ion battery serves as a portable power source and supplies power to the electrolytic tank, a high-temperature water vapor inlet and an oxygen outlet are formed in one side of the electrolytic tank, water vapor comes from the photo-thermal interface evaporation device, and hydrogen generated on the other side of the electrolytic tank enters the fuel cell through the porous insulating spacer and the porous collector plate to serve as a raw material. And the water and the electricity react with oxygen in the air on the other side of the fuel cell to generate water and generate electric energy at the same time, and the generated water and electricity supply power and raw materials for the next electrolytic cell. According to the utility model, the coupling of the electrolytic tank and the fuel cell is fully utilized, and the photo-thermal interface evaporator is combined to generate high-temperature water vapor so as to improve the water electrolysis efficiency, so that the aim of obtaining oxygen from air in portable equipment is fulfilled, and the device can be used for supplying oxygen in a short time under special conditions such as outdoor activities and emergency treatment.

The invention discloses an intelligent oxygen generator for patients with chronic obstructive pulmonary disease, which comprises a household oxygen generator, and a portable oxygen generator is arranged on the household oxygen generator in a manner of being inserted and pulled out. The household oxygen generator comprises a main body shell, an air inlet, a display screen, a household oxygen outlet, a household humidifying water tank, a storage drawer, and a power supply, a central control module and an oxygen generation function module group which are positioned in the main body shell, the oxygen generation function module set comprises an air inlet module, an air compression module, a valve switching and control module, a separation module, an oxygen storage and buffer module and an exhaust module, the portable split type module design is adopted, so that the long-time oxygen inhalation requirement of a patient is met, meanwhile, the product supports intelligent operation, has the functions of intelligent monitoring, real-time adjustment and the like, and is suitable for popularization and application. Parameters such as oxygen concentration and flow velocity can be automatically adjusted according to different states of patients, and the problems that an existing oxygen generator is poor in environment adaptability, single in function, insufficient in portability and the like are solved.

The invention relates to an island energy system based on deep reinforcement learning. The island energy system comprises an energy device, an electrolysis device, an energy storage battery, a hydrogen storage device, an oxygen storage device, a pressure swing adsorption device, an ammonia synthesis device, a seawater desalination device and a scheduling device, the energy device inputs electric energy to the electrolysis device, the energy storage battery, the pressure swing adsorption device and the seawater desalination device; the electrolysis device is used for decomposing water provided by the seawater desalination device into hydrogen and oxygen; the pressure swing adsorption device provides nitrogen; the hydrogen storage device stores hydrogen, and then the hydrogen and nitrogen are input into the ammonia synthesis device; the oxygen storage device stores oxygen; the scheduling device constructs the real-time operation state of the system into a multi-dimensional state vector, forms an electricity-hydrogen-oxygen-ammonia-water multi-energy flow coupled balance constraint system, makes a decision on the multi-dimensional state vector based on a near-end strategy optimization algorithm, and outputs an optimal strategy parameter. According to the system, the electrolysis device serves as a hub, the global relation between electrolysis hydrogen production and multi-energy combined supply is optimized, and the low-carbon energy supply, ecological restoration and load requirements are met.

The invention relates to a continuous wet oxidation device for enhanced mass transfer treatment of high-salinity organic wastewater. The continuous wet oxidation device comprises a wastewater storage tank, a liquid inlet system, a high-pressure oxygen storage tank, a gas inlet system, a mass transfer enhanced reactor, a gas-liquid separation system and an oxygen recovery system, the mass transfer enhanced reactor is of a shell-and-tube structure and comprises a reactor shell and a built-in ceramic distributor; a tube pass is formed in the ceramic distributor, and a shell pass is formed between the ceramic distributor and the reactor shell; the tube pass is provided with a liquid feeding port and a liquid discharging port, and the shell pass is provided with a gas feeding port. Oxygen is distributed to a tube pass through the ceramic distributor and is quickly dispersed into micron-sized bubbles, so that the contact area between gas and liquid is increased, and the oxygen utilization rate and the reaction efficiency are improved.

The utility model relates to the technical field of oxygen generation equipment, and discloses a modularized oxygen generator, which comprises a main frame module, a main support, an oxygen storage tank and a control assembly, the compressor module is located on one side of the main support and detachably connected with the main support in a sliding mode through a first detachable structure. The molecular sieve module is positioned on the other side of the main bracket and is detachably connected with the main bracket in a sliding manner through a second dismounting structure; and the battery module is positioned on the lower side of the main bracket and is detachably connected with the main bracket in a sliding manner through a third detachable structure. According to the modularized oxygen generator, through the modularized design, the compressor module, the molecular sieve module and the battery module can be independently mounted and quickly dismounted, so that the independence of each functional module is improved, and the maintenance and replacement operation of the oxygen generator is greatly simplified.

The invention belongs to the technical field of first-aid equipment, and particularly relates to a first-aid platform with an oxygen uptake function, the first-aid platform comprises a main control module and an oxygen supply module, the oxygen supply module comprises a chemical oxygen generation unit, and a peroxide reaction cavity is arranged in the chemical oxygen generation unit; the oxygen supply module further comprises an adsorption oxygen storage unit; the master control module is provided with a standardized interface. In the invention, a chemical oxygen generation unit of a peroxide reaction cavity is arranged in the oxygen supply module, the dependence of a traditional molecular sieve on an external gas source and electric power is avoided, a rapid oxygen release reaction is triggered through an iron powder catalyst, the oxygen generation speed is higher than that of molecular sieve oxygen generation, and the first-aid golden time requirement can be met; meanwhile, in extreme scenes such as plateau and power failure, the oxygen production rate is automatically adjusted through an air pressure compensation valve, it is guaranteed that the oxygen flow is stably larger than or equal to five liters per minute when the altitude is 5000 m, and the oxygen production amount is attenuated in the low-pressure environment according to the patent; meanwhile, the peroxide reaction cavity is independently sealed, so that the risk of oxygen supply interruption caused by faults of a molecular sieve air compressor is avoided.

The invention discloses application of a cobalt-based catalyst in preparation of ethylene by photocatalytic ethane dehydrogenation with participation of lattice oxygen, the cobalt-based catalyst is Co3O4 with a spinel structure, and due to the coexistence characteristic of Co < 2 + > / Co < 3 + > in the structure and the migration ability of the lattice oxygen, the cobalt-based catalyst can be used as a photocatalyst and an oxygen storage tank; therefore, under the environment-friendly and low-energy-consumption photocatalytic reaction condition, lattice oxygen can be used as a mild oxidizing agent for high-selectivity photocatalytic ethane dehydrogenation to prepare ethylene. Direct participation of oxygen molecules is avoided through utilization of lattice oxygen in the catalyst, generation of COx by-products caused by excessive oxidation can be prevented, ethylene selectivity is improved, the lattice oxygen consumed in the catalyst after the reaction can be regenerated through reaction with air or oxygen, the safety problem that ethane and oxygen are mixed and combustible is solved, and the catalyst is suitable for industrial production. And the feasible photocatalytic oxidation-reduction cycle is realized.

The utility model provides a kind of fresh seafood transportation intelligence, including transport cabin, supply unit, the supply unit is used to provide clean water and oxygen to transport cabin, the supply unit includes mixing cylinder, the mixing cylinder two sides are provided with water storage tank and oxygen storage tank respectively, the water storage tank and oxygen storage tank are connected with mixing cylinder by feeding assembly, the mixing cylinder is connected with transport cabin by pumping component;Mixing assembly is provided in the mixing cylinder, and the mixing assembly is used to mix the substance in the mixing cylinder.The utility model utilizes mixing cylinder, feeding assembly and pumping component and other structures can send clean water into transport cabin, and utilize mixing assembly can mix the water body in the mixing cylinder, and cooperate temperature control component can deliver different oxygen content, temperature water body into transport cabin, can satisfy the survival needs of different seafood, ensure the survival rate of seafood in the process of transportation, reduce the cost of seafood transportation.

The invention provides a bean product freshness-locking manufacturing process using liquid nitrogen. The bean product freshness-locking manufacturing process comprises the following steps: (1) pretreatment; (2) liquid nitrogen rapid cooling; (3) temperature balancing; and (4) packaging and refrigerating. The bean products are treated through the composite fresh-keeping liquid in the pretreatment stage, surface microorganisms of the bean products can be effectively inhibited, a foundation is laid for follow-up steps, in the follow-up treatment process, the bean products are quickly frozen through liquid nitrogen, the bean products can be quickly cooled, and glassy ice layers are formed on the surfaces of the bean products, so that the bean products are quickly preserved. Oxygen is physically isolated, moisture is locked, and meanwhile, the cooling rate is accurately controlled, so that tiny and uniformly distributed ice crystals and fixed microstructures are formed in the bean product, and a protein network structure in the bean product is not damaged, so that the problems of juice loss and texture collapse after unfreezing are solved; finally, a stable and low-oxygen storage environment is provided, long-acting preservation of bean products can be achieved, and the quality can be kept.

The invention relates to the technical field of energy storage systems, and particularly discloses an air compression energy storage system coupled with a Carnot battery, which comprises a multi-stage air compression assembly, an electric heating oxygen release reactor, a compressed air storage device, a separator, an oxygen storage tank and a renewable power supply device, the multi-stage air compression assembly is used for performing multi-stage compression on air to obtain compressed air and water vapor; the electric heating oxygen release reactor is used for receiving the water vapor, so that an oxygen carrier in the electric heating oxygen release reactor is decomposed to obtain a reduced metal oxide and oxygen; the oxygen storage tank is connected with the separator; the renewable power supply device supplies power to the multi-stage air compression assembly; the separator and the compressed air storage device are both connected with the multi-stage air compression assembly, and water separated by the separator is used for recycling compression heat generated by the multi-stage air compression assembly in the compression process; according to the system, the balance partial pressure of the electric heating oxygen release reactor can be reduced by using steam, and the problem of difficult operation caused by low vacuum operation temperature of the electric heating oxygen release reactor is avoided.

A proposed energy system comprises a functional unit with at least one electrolysis cell (EC) and another functional unit with at least one solid oxide fuel cell (FC), wherein the two functional units (EC) and (FC) are combined in one device and waste heat from the (FC) is used to extract hydrogen from a (LOHC), and the entirety of (EC) and (FC) is equipped with a water storage tank and an oxygen storage tank such that water and steam from the (FC) are temporarily stored in an insulated container and made available to the electrolysis cell operation, and the oxygen from the (EC) is temporarily stored and supplied to the fuel cell operation, mixed with or without air.

The application discloses a hydrogen fuel cell integrated box, which comprises a box body, a cell stack, a hydrogen storage tank, an oxygen storage tank, an electric control unit, a gas pipeline and a fan are contained in the box body, the box body is provided with an electric output component, a selectively opened and closed air inlet, an air outlet corresponding to the opening and closing state of the air inlet and a selectively opened and closed tank replacement opening, the cell stack, the hydrogen storage tank, the oxygen storage tank, the electric control unit and the gas pipeline are arranged in the box body, the hydrogen storage tank and the oxygen storage tank are connected with the cell stack through the gas pipeline, the cell stack is connected with the electric control unit, the electric control unit is connected with the electric output component, and the fan has a gas suction end and a gas blowing end, and the gas suction end corresponds to the air inlet. The application can replace the whole hydrogen fuel power generation system, replace the hydrogen storage tank or the oxygen storage tank alone, and eliminate the deposition of hydrogen gas in the dead angle of the box body.

A method for forming a battery cell in a rechargeable energy storage system comprises providing a cathode and an anode, the cathode containing a lithium metal phosphate. The method includes positioning a separator between the cathode and the anode, the separator having a side facing the anode and a side facing the cathode. The method includes depositing a catalyst layer, consisting of an oxygen storage catalyst, onto the cathode-facing side of the separator such that the catalyst layer continuously covers the cathode-facing side of the separator. The oxygen storage catalyst has an oxygen uptake capacity at or above a threshold temperature, and the oxygen storage catalyst has an oxygen retention capacity at or above the threshold temperature, the threshold temperature being at least 200 degrees Celsius.

The utility model provides a mounting structure of an oxygen supply assembly and an oxygen generator. The mounting structure of the oxygen supply assembly comprises a cavity, and an atmospheric pressure cavity, a circuit board and an oxygen spraying valve which are arranged in the cavity, the circuit board is provided with a differential pressure type respiration sensor and an oxygen storage tank pressure sensor, the atmospheric pressure cavity is communicated with the atmosphere, and a valve seat of the oxygen spraying valve is provided with an air inlet used for being connected with an oxygen storage tank, an oxygen supply port used for supplying oxygen to the outside and a tank pressure monitoring port connected with the oxygen storage tank pressure sensor. The respiration sensor interface is connected with the differential pressure type respiration sensor; the differential pressure type respiration sensor is connected with the atmospheric pressure cavity and the respiration sensor connector, the accuracy of the detection result can be improved, the oxygen storage tank pressure sensor can be connected with the oxygen storage tank through the valve seat and detect the oxygen pressure, no hole needs to be additionally formed in the oxygen storage tank, and therefore the integrity of the oxygen storage tank is higher, and the air tightness is better.

The invention provides a preparation method of a noble metal catalyst, which comprises the following steps: S1, carrying out hydrothermal treatment, drying and roasting on aluminum oxide to obtain aluminum oxide powder; s2, after titanium salt and zirconium salt are mixed according to a preset proportion, a diluent is added, and a precursor solution is obtained; dipping and mixing the aluminum oxide powder and the precursor solution according to a preset first mass ratio, and then washing, drying and roasting to obtain a titanium-zirconium-aluminum composite carrier; s3, mixing and grinding the titanium-zirconium-aluminum composite carrier, noble metal and an oxygen storage material according to a preset second mass ratio to obtain coating slurry; the noble metal is one or more of platinum, palladium and rhodium; s4, coating a target carrier with the coating slurry, and then drying and roasting to obtain the noble metal catalyst. Therefore, the catalytic efficiency and stability of the noble metal catalyst can be improved.

The utility model relates to the technical field of comprehensive energy, and discloses an offshore wind power and hydrogen gas turbine multi-energy complementary comprehensive energy system which comprises an offshore wind power plant, an offshore converter station, an onshore converter station, an electrolytic bath, an oxygen storage tank, a hydrogen storage tank and a hydrogen gas turbine, and the offshore wind power plant, the offshore converter station and the onshore converter station are sequentially connected; the electrolytic cell is respectively connected with the offshore wind plant, the oxygen storage tank and the hydrogen storage tank; one end of the hydrogen gas turbine is connected with the hydrogen storage tank, and the other end of the hydrogen gas turbine outputs electric energy. When the wind energy is sufficient, electricity is sold to the power grid through the offshore converter station and the land converter station, and wind curtailment is avoided. In the intermittent period of the wind energy, when the output of the wind energy is not reduced enough to cope with the island load peak, the hydrogen gas turbine takes hydrogen in the hydrogen storage tank as fuel to generate electricity according to the mode of'heat by electricity 'and supply the electricity to the island electric load, so that the problem that the wind energy is influenced by the unstable output of the wind energy is solved.

The invention relates to the technical field of molecular sieve oxygen generation, and provides medical antibacterial molecular sieve oxygen generation equipment which comprises a molecular sieve adsorption tower, an oxygen generation molecular sieve module, an automatic supporting module, an online replacement module, an air pump module and an oxygen storage tank. The oxygen generation molecular sieve module comprises a containing mesh enclosure, a first ultraviolet LED light source and a mesh cover plate, the automatic supporting module comprises a rotating shaft and a supporting piece, the supporting piece is fixedly arranged on the surface of the rotating shaft, the containing mesh enclosure can make contact with the supporting piece, and the online replacement module comprises a telescopic piece, a U-shaped frame, a replacement frame and a removal frame. The fixed end of the telescopic piece is fixedly connected with the molecular sieve adsorption tower, the n-shaped frame is fixedly connected with the movable end of the telescopic piece, the replacement frame and the removal frame are arranged in the replacement opening and the removal opening in a sliding mode respectively and used for sealing the replacement opening and the removal opening respectively, and the replacement frame and the removal frame are both fixedly connected with the n-shaped frame. The characteristics of small fluctuation of oxygen concentration and antibacterial effect are realized.

The utility model provides an oxygen pillow assembly and a connector applied to an oxygen pillow, the oxygen pillow assembly comprises an oxygen storage bag body, an air delivery pipe, a regulating valve, the connector and an end cover, the oxygen storage bag body is provided with an air outlet hole, and the outer surface of the oxygen storage bag body is provided with a circle of reinforcing side band; the air delivery pipe is fixed at the air outlet hole so as to be communicated with the oxygen storage cavity of the oxygen storage bag body through the oxygen pipe; the adjusting valve is arranged on the gas conveying pipe, so that the on-off of the gas conveying pipe is adjusted through the adjusting valve; one end of the connector is detachably connected with the gas conveying pipe, and the other end of the connector is detachably connected with an external oxygen conveying pipeline; the end cover is fixed on the reinforcing side band and detachably connected with the other end of the connector, and when the oxygen storage bag body is standby, the other end of the connector can be connected to the end cover to prevent the oxygen storage bag body from leaking air. The oxygen pillow has the technical effects that the sealing performance of the oxygen pillow can be improved, the oxygen storage time is prolonged, and the service life of the oxygen pillow assembly is prolonged.

The invention provides a gas turbine power generation and propulsion integrated system based on hydrogen and oxygen preparation and combustion, and belongs to the technical field of power supply devices. The device comprises an oxyhydrogen storage part, a fuel gas generator, a turbine part and a motor part which are connected in sequence, hydrogen and oxygen fuel stored in the hydrogen and oxygen storage part is supplied to the fuel gas generator for combustion, generated gas is conveyed to the turbine part to push turbine blades in the turbine part to rotate to generate mechanical energy, the turbine blades rotate to drive a motor rotor of the motor part to rotate, the mechanical energy is converted into electric energy through electromagnetic induction, and power generation is achieved. According to the invention, a turbine power generation system formed by the hydrogen and oxygen storage part, the gas generator, the turbine part and the motor part is used for generating power, and the generated power is used for supplying power to satellite airborne equipment, so that the power can be efficiently generated at high speed and high power, and the power can be efficiently and quickly supplied to satellite airborne high-power electric equipment when a target needs to be attacked.

The utility model relates to the technical field of oxygen generator molecular sieves, and discloses an integrated molecular sieve assembly, which comprises a molecular sieve cylinder, a molecular sieve upper cover and a molecular sieve lower cover, the molecular sieve cylinder comprises two molecular sieve cavities and an oxygen storage cavity, a pressure regulating valve communicated with the oxygen storage cavity is arranged on the molecular sieve upper cover, and the molecular sieve lower cover is provided with a pressure regulating valve communicated with the oxygen storage cavity. The molecular sieve lower cover communicates the two molecular sieve cavities with the oxygen storage cavity through communicating channels, the molecular sieve cavities communicate with each other through a communicating pipe, and an on-off valve is arranged on the communicating pipe and used for controlling opening and closing of the communicating pipe. According to the utility model, the oxygen storage cavity and the molecular sieve cavity are integrally arranged in the molecular sieve cylinder, and the communication channel is integrated on the molecular sieve lower cover to communicate the molecular sieve cavity with the oxygen storage cavity, so that a redundant pipeline structure is effectively avoided, and meanwhile, the on-off valve is arranged to ensure that the air pressure in the two molecular sieve cavities is stable and balanced; and meanwhile, the nitrogen discharge efficiency in a single molecular sieve cavity can be improved.

The invention relates to the field of catalyst preparation, and discloses catalyst slurry and a preparation method thereof, and a VOCs catalytic oxidation catalyst and a preparation method and application thereof. The invention relates to a preparation method of catalyst slurry, which comprises the following steps: (1) mixing a rare earth metal precursor, an auxiliary agent metal precursor, a solvent and an optional dispersant, then adjusting the pH value to 6-9, and then carrying out reaction, first drying and first roasting to obtain a perovskite composite metal oxide; and (2) mixing a molecular sieve, an oxygen storage material, molybdenum oxide and the perovskite composite metal oxide, adjusting the pH value to 8-12, adding a binder and a matrix source, mixing, and grinding to obtain catalyst slurry. According to the method, the perovskite composite metal oxide is matched with the molecular sieve, the oxygen storage material and the molybdenum oxide for use, and the various components cooperate with one another, so that more active centers can be provided, and the stability and the catalytic performance of the catalyst are effectively improved.

An oxygen storage material (OSM) comprising zirconium oxide, aluminum oxide, cerium oxide and an oxide of at least one rare earth metal other than cerium is provided. The oxygen storage material remains thermally stable after aging at 1100 DEG C for at least 6 hours without any phase separation and / or disproportionation.

The invention belongs to the technical field of energy storage systems, and relates to an energy storage and release system for fuel production through thermochemical coupling CO2 reduction, a working method and a configuration method. The energy storage and release system comprises an energy storage system and an energy release system; the energy storage system comprises a photovoltaic electricity abandoning unit, a thermochemical energy storage reactor, a water electrolyser, a carbon dioxide storage tank A, a hydrogen storage tank, an oxygen storage tank, equipment for preparing methanol from carbon dioxide and a methanol storage tank; the photovoltaic electricity abandoning unit is connected with the thermochemical energy storage reactor and the water electrolyser; the thermochemical energy storage reactor is connected with the carbon dioxide storage tank A. The water electrolyser is connected with the hydrogen storage tank and the oxygen storage tank. The carbon dioxide storage tank A and the hydrogen storage tank are respectively connected with the equipment for preparing methanol from carbon dioxide; the carbon dioxide methanol preparation equipment is connected with the methanol storage tank; the energy release system comprises methanol combustion heat supply equipment, a carbon dioxide storage tank B and a thermochemical energy release reactor which are connected in sequence; and the methanol combustion heat supply equipment is respectively connected with the methanol storage tank and the oxygen storage tank. The problem that an existing energy storage system is high in cost is solved.

The invention discloses an ultralow-load stable combustion system and method for a pulverized coal fired boiler. The ultralow-load stable combustion system comprises a pulverized coal concentration separator device, an oxygen preparation device, an oxygen storage tank, a heater, a thick pulverized coal burner, a thin pulverized coal burner and an oxygen-enriched combustion-supporting air nozzle. An inlet of the pulverized coal concentration separator device is connected with a primary air pulverized coal feeding pipeline, a thick pulverized coal outlet of the pulverized coal concentration separator device is connected with a thick pulverized coal burner through a first pipeline, and a thin pulverized coal outlet is connected with a thin pulverized coal burner through a second pipeline. The oxygen preparation device is connected with the oxygen storage tank, the oxygen storage tank is connected with the heater, and the heater is connected with the oxygen-enriched combustion-supporting air nozzle arranged above the dense pulverized coal burner. The method comprises the following steps: separating primary air into thick pulverized coal and thin pulverized coal; the thick pulverized coal is fed into a thick pulverized coal burner, and the thin pulverized coal is fed into a thin pulverized coal burner; preparing high-concentration oxygen, heating the high-concentration oxygen, and spraying the heated high-concentration oxygen to the upper part of the And stable combustion is maintained when the boiler load is lower than 20%. Continuous and stable combustion of the boiler under the load of 20% or below is achieved.

The utility model belongs to the technical field of comprehensive utilization and recycling of energy, and particularly relates to a biogas energy storage system. Comprising electrolyzed water equipment and a biogas digester, an oxygen outlet of the water electrolysis equipment is sequentially connected with an oxygen compressor, an oxygen storage tank, a mixer and a combustion chamber; a hydrogen outlet of the water electrolysis equipment is sequentially connected with a hydrogen compressor and a first heat exchange unit; the biogas digester is connected with the combustion chamber, the combustion chamber is connected with the turbine generator, a carbon dioxide outlet of the turbine generator is divided into two branch pipelines after passing through the flow divider, the first branch pipeline is connected to the mixer, and the second branch pipeline is connected to the second heat exchange unit; a hydrogen outlet of the first heat exchange unit and a carbon dioxide outlet of the second heat exchange unit are connected with methane generation equipment; during off-peak electricity utilization, water is electrolyzed through the water electrolysis equipment to obtain oxygen and hydrogen, the oxygen and the hydrogen are compressed and then stored, and during electricity utilization, clean energy power generation is achieved through the biogas digester, the mixer, the combustion chamber, the turbine generator and the stored oxygen.

The invention relates to a three-way catalyst as well as a preparation method and application thereof. The three-way catalyst comprises a carrier and an active coating coated on the surface of the carrier, the active coating comprises a bottom layer, a middle layer and an upper layer from inside to outside; the bottom layer comprises an oxygen storage material layer, and the oxygen storage material layer comprises activated aluminum oxide and a rare earth oxygen storage material; the middle layer comprises a Pd coating, and the upper layer comprises a Pt-Rh-Ru coating. The three-way catalyst provided by the invention adopts a three-layer coating structure, so that the poisoning effect of sulfur in gas on noble metal palladium is effectively reduced, and the performance and durability of the catalyst are greatly improved. Activated aluminum oxide and a rare earth oxygen storage material are selected as bottom layer materials of the catalyst, the oxygen storage performance of the catalyst is greatly improved, and the catalyst has obvious performance advantages when coping with engine loads with large air-fuel ratio fluctuation.