221 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 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 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 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.

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 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 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 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.

The application discloses an oxygen supply device, which comprises a device body, a pre-filter, an air compressor, a heat exchanger, an electromagnetic valve, a control circuit, an air adsorption device, an oxygen storage tank and an oxygen supply mechanism which are sequentially connected in the device body. The air adsorption device comprises an air conveying structure, an oxygen conveying structure, a nitrogen output structure and at least two molecular sieve towers which are connected in series. The molecular sieve towers have a first working state of adsorbing oxygen and a second working state of backwashing and discharging nitrogen. The oxygen supply device further comprises a gas pressure sensing detection member and a gas pressure elastic detection member which are arranged in an air inlet cavity. With the gradual increase of the air pressure in the air inlet cavity, the gas pressure sensing detection member and the gas pressure elastic detection member are triggered in sequence to switch the molecular sieve towers from the first working state to the second working state. The oxygen supply device can quickly discharge nitrogen in the air adsorption device, thereby improving the efficiency and quality of air oxygen production.

Provided is a catalyst temperature calculation device capable of calculating the temperature of a three-way catalyst having an oxygen storage capability with high accuracy. This catalyst temperature calculation device is provided with: an estimation unit that estimates, on the basis of the amount of heat of exhaust gas discharged from an engine, the temperature of a three-way catalyst that has oxygen storage capacity and purifies the exhaust gas from the engine; and a correction unit that corrects the temperature of the three-way catalyst estimated by the estimation unit on the basis of the ammonia concentration in the exhaust gas discharged from the three-way catalyst into which the exhaust gas having a rich air-fuel ratio flows.

The invention discloses an integrated special-shaped oxygen storage tank and assembly for a portable oxygen generator, and belongs to the technical field of portable oxygen generators. The oxygen storage tank comprises an upper shell and a lower shell which are detachably, fixedly and hermetically connected, and the upper shell and the lower shell are enclosed to form an internal cavity for storing oxygen; the top of the upper shell is divided into an air inlet end and an air outlet end, an air inlet hole is formed in the air inlet end, and an oxygen outlet cavity is formed in the air outlet end; an oxygen detection hole and a pulse valve mounting seat are arranged between the air inlet end and the air outlet end; a pressure equalizing valve mounting groove is formed in the outer side of the air inlet hole, and a sensing connecting hole is formed in the outer side of the pulse valve mounting seat; a plurality of fixing holes used for being connected with a bottom component are formed in the bottom of the lower shell. Meanwhile, the invention further provides an integrated assembly comprising the oxygen storage tank. The oxygen storage tank and the molecular sieve tank are separately arranged, and a one-way valve, a pressure equalizing valve, a pulse valve, a bacterial filter and other parts can be integrated, so that the integration level is improved, and the molecular sieve tank can be quickly replaced.

The utility model discloses an integrated oxygen generation system. The integrated oxygen generation system comprises a case and a multi-surface case cover, an air compressor, a freeze dryer, a filter device, an air-oxygen separator, an air storage tank, an oxygen storage tank and an oxygen pressurizing device are arranged in the case. The case is divided into a first storage chamber and a second storage chamber, a first base, a second base and a supporting plate are arranged in the first storage chamber, and the air-oxygen separator, the air storage tank and the oxygen pressurizing device are arranged on the bases and the supporting plate respectively; the latter is provided with a first compartment, in which a second support plate is provided, and a second compartment, in which the compressor, the dryer and the filter device are arranged. The box cover of the second storage chamber is provided with a heat dissipation air outlet and an air inlet, and the box cover on the side face is additionally provided with an air inlet. A heat dissipation exhaust outlet is formed in the box cover above the first storage chamber, and a detachable partition plate with heat dissipation equipment is arranged between the two storage chambers. According to the system, the occupied area is reduced, noise is lowered, the heat dissipation performance is improved, and therefore efficient and convenient oxygen generation experience is provided for a user.

The invention relates to the technical field of medical equipment, and discloses an external oxygen supply method, an external-oxygen-free oxygen supply method and a quantitative oxygen supply method, and provides three core modes: in an external oxygen supply mode, redundant oxygen during extrusion is recycled and reused through a gas storage bag, and overpressure is prevented in combination with a pressure release valve; in the oxygen supply mode without external oxygen, pure manual extrusion air supply is achieved through a shell which can be replaced or arranged outside the air bag in a sleeving mode, and the device adapts to the oxygen-source-free environment; in the quantitative oxygen supply mode, the inflatable inner bag is arranged in the air bag to accurately limit the oxygen storage space in advance, and accurate control over the single tidal volume is achieved. According to the invention, the oxygen utilization rate is obviously improved, the use safety is guaranteed, and the application capability of the simple respirator in precise ventilation and emergency scenes is expanded.

The invention discloses an electricity-heat-hydrogen comprehensive energy system based on thermochemical energy storage, which is characterized in that an outlet of a thermodynamic cycle system is communicated with an inlet of a steam turbine, a steam extraction opening of the steam turbine is communicated with a shell side inlet of a thermochemical reactor, a shell side outlet of the thermochemical reactor is communicated with an inlet of a solid oxide electrolytic tank, and a shell side outlet of the solid oxide electrolytic tank is communicated with a shell side outlet of the steam turbine; a hydrogen outlet of the solid oxide electrolytic tank is communicated with an inlet of the hydrogen storage tank, an oxygen outlet of the solid oxide electrolytic tank is communicated with an inlet of the oxygen storage tank, an outlet of the hydrogen storage tank is communicated with an inlet of the combustion chamber, an outlet of the oxygen storage tank is communicated with an inlet of the combustion chamber, and an outlet of the combustion chamber is communicated with an inlet of the steam turbine. By means of the system, a unit can better absorb new energy for power generation, and stable operation of a power grid is kept.

The utility model discloses a zero carbon constant temperature's high pressure oxygen cabin system belongs to the plateau air conditioning technical field. The system includes photovoltaic power generation unit (1), power conversion unit (2), water electrolysis oxygen production unit (3), waste heat recovery unit (4), air source heat pump unit (5), low temperature heat storage unit (6), constant temperature regulation unit (7), oxygen purification unit (8), oxygen storage unit (9), high pressure oxygen cabin (10) etc. Zero carbon constant temperature's high pressure oxygen cabin system in the utility model is coupled with photovoltaic power generation, water electrolysis oxygen production, low temperature heat storage, solid state oxygen storage and other technologies, has the remarkable advantage of high energy utilization efficiency, whole process zero carbon emission, still configures the intelligent comprehensive energy management strategy, can realize the accurate, nimble control of hydrogen, heating in high pressure oxygen cabin, guarantees the in-cabin environment is suitable, improves the effect of high pressure oxygen therapy.

The utility model discloses a portable oxygen generator in the field of breathing equipment, which comprises a shell, a host and a battery box, the battery box is positioned at the bottom of the shell, and a convex adjusting button is arranged on the upper surface of the shell; the main machine is located in the shell and comprises a compressor, a molecular sieve tank, a control valve assembly, a main board and an oxygen storage component, the molecular sieve tank is vertically arranged above the compressor, and the projection of the molecular sieve tank on the horizontal plane is completely or partially overlapped with the compressor. According to the layout, effective separation of the top man-machine interaction layer, the middle function execution layer and the bottom power layer is formed, complex intersection of lines and pipelines is avoided, the utilization rate of the internal space is maximized, and equipment assembly is facilitated; the compressor, the molecular sieve tank and other large-size functional parts are stacked in the vertical direction instead of being transversely arranged side by side, so that the transverse size of the equipment is greatly reduced, the appearance of the whole machine can be slender, the machine conforms to human engineering, a user can hold the machine with one hand conveniently, and real portability is achieved.

The invention relates to the technical field of oxygenerators, in particular to an oxygen quantitative output control method and system of a portable oxygenerator, the method comprises the following steps: setting a target output oxygen volume of an oxygen storage tank, opening a pulse valve to start oxygen output, the pulse valve is connected with the output end of the oxygen storage tank, and the pulse valve is connected with the output end of the oxygen storage tank; oxygen storage tank pressure, environment pressure and environment temperature are obtained in real time in a certain sampling period, and the oxygen storage tank pressure is obtained through a first pressure sensor; and the microcontroller determines the instantaneous flow rate with a correction factor based on a hydromechanics related model and determines the volume of oxygen output in the current sampling period based on the instantaneous flow rate, so that whether the pulse valve is controlled to be closed or not is determined according to the accumulative output volume of the oxygen. According to the method, original correction factors of the temperature and the pressure are constructed, the correction factors adaptively adjust the instantaneous flow according to the environment temperature and the environment pressure, and stable oxygen output of the oxygen generator in different environments is guaranteed.

The invention discloses a seabed combustible ice in-situ combustion gas collection and flow and pressure control system, and relates to the technical field of deep sea combustible ice development and utilization. A combustible ice storage cabin communicates with a methane gas drying treatment cabin through a first pipeline, and a first gas control valve is arranged on the first pipeline; the methane gas drying treatment cabin is communicated with the gas combustion chamber through a second pipeline, the second gas control valve is arranged on the second pipeline, the oxygen storage cabin is communicated with the gas combustion chamber through a third pipeline, and the third gas control valve is arranged on the third pipeline. And the first gas control valve, the second gas control valve and the third gas control valve are all in electric signal connection with the multi-mode gas pipeline control system. According to the invention, gas circuit integrated management of the whole process from seabed collection, in-situ decomposition to floating fire making of combustible ice can be realized, and the automation and intelligence level of the system is improved.

This invention discloses a method for preparing a biomass gasification adsorption-enhanced reforming hydrogen production catalyst, belonging to the fields of catalyst preparation and biomass thermal conversion technology. The catalyst of this invention uses CeO2 as a high-content support and Ni and Fe as active components. The method employs a co-impregnation method to simultaneously load a nickel active phase precursor and an iron co-catalytic precursor onto the support surface; after drying, the precursor powder is placed under an inert atmosphere and processed according to the following relationship... T ×0.01+ t By calcining at a temperature T of 10°C with a time t in a complementary correlation, a composite catalytic system with strong interactions is constructed. This invention also provides the application of the above catalyst in combination with a calcium-based adsorbent in biomass adsorption-enhanced reforming for hydrogen production. This invention enhances the catalyst's resistance to carbon deposition by regulating the bimetallic electronic structure and the oxygen storage and release capacity of the support. Simultaneously, by combining a segmented temperature control process, it achieves kinetic synergy between in-situ CO2 capture and catalytic reforming, significantly increasing the green hydrogen content in the syngas.

The utility model discloses an industrial oxygen filling system which comprises a high-oxygen storage tank, a common oxygen storage tank, a plunger pump, a confluence pipeline, a chromatographic instrument and an emptying distribution device, the high oxygen storage tank and the common oxygen storage tank are both connected to a suction connector of the plunger pump, a discharge connector of the plunger pump is connected with the confluence pipeline, and the confluence pipeline is composed of a busbar header pipe and a plurality of branch busbars arranged on the output side of the busbar header pipe in parallel; the emptying distribution device comprises an emptying pipeline, a filter, a freeze dryer, a distribution branch pipeline and a collection storage tank. When filling types are switched, a chromatographic instrument is used for real-time detection, pipeline emptying is carried out through an emptying distribution device, pretreatment is carried out in the pipeline emptying process, and oxygen is stored in each collection storage tank according to the purity, so that integrated filling of various types of oxygen can be realized, resource waste during switching can be effectively reduced, and the cost is reduced. And the overall efficiency and economic benefits of the system are improved.

A hydrogen-rich blast furnace ironmaking system based on mass-energy conversion, comprising a water electrolysis system (2). The water electrolysis system (2) is separately connected to a hydrogen storage tank (3) and an oxygen storage tank (4); a gas outlet of the hydrogen storage tank (3) is connected to a hydrogen compressor (5); an outlet of the hydrogen compressor (5) is connected to a hydrogen buffer tank (6); the hydrogen buffer tank (6) is connected to a hydrogen injection valve group (7); the hydrogen injection valve group (7) is connected to a hydrogen preheating system (8); and the hydrogen preheating system (8) is connected to a tuyere of a blast furnace body (1) or a hydrogen injector at the lower portion of the furnace body.

The invention discloses a rare earth oxygen storage material preparation device and method based on a coprecipitation method, and relates to the technical field of material preparation.The rare earth oxygen storage material preparation device comprises a precipitation tank and a base fixedly connected to the lower surface of the precipitation tank and used for keeping the device stable, and a drain valve penetrates through the bottom end of the outer surface of the precipitation tank. The precipitation tank is used as a main aging and standing precipitation space for accommodating a rare earth salt solution and a precipitation product, and is provided with a drain valve for discharging the precipitation product generated by standing of the precipitation tank; the mixing mechanism is used for mixing and stirring a solution, the mixing box is arranged on the outer surface of the mixing mechanism, meanwhile, a pH detector is arranged in an inner cavity of the mixing box, the pH value of the internal solution can be monitored in real time, and the mixing mechanism is arranged to serve as a core stirring assembly to be used for fully mixing and stirring the solution; the effect of slowly and uniformly dripping the precipitant into the rare earth salt solution is achieved.

The application relates to the technical field of desulfurizers, and particularly discloses an iron-based desulfurizer and a preparation method thereof. The preparation method of the iron-based desulfurizer comprises the following steps: S1: mixing iron salt, ferrous salt, manganese salt and zinc salt in water in a molar ratio of (1.2-2.0):1:(0.05-0.08):(0.03-0.05), heating to 35-45 DEG C, blowing in air, adding an alkali solution, reacting for 20-30 min, and controlling the final pH of the reaction to be 8.0-8.5, then performing solid-liquid separation, washing, drying, and obtaining a precursor; and S2: uniformly mixing the precursor, a composite pore-forming agent, a binder and an oxygen storage agent, shaping, drying at 80-115 DEG C, and obtaining the iron-based desulfurizer; the composite pore-forming agent comprises ammonium bicarbonate and ammonium acetate. The iron-based desulfurizer prepared according to the application has high sulfur capacity and regeneration cycle retention rate.

The invention belongs to the technical field of oxygen production, and particularly relates to low-pressure variable-pressure oxygen adsorption equipment which comprises an air compressor, a filter, a buffer tank, an oxygen storage tank and two groups of adsorption towers, and each group of adsorption towers is composed of an initial-end adsorption tower and a tail-end adsorption tower which are connected in series. The device further comprises a first valve assembly, a second valve assembly, a third valve assembly, a fourth valve assembly, a fifth valve assembly, a sixth valve assembly, a seventh valve assembly, an eighth valve assembly and a ninth valve assembly. The first valve assembly switches the two initial-end adsorption towers to be communicated with the buffer tank by collecting the same-end pressure difference of the same-end adsorption towers in the two sets of adsorption towers. The two groups of adsorption towers are automatically switched by using the pressure difference of the same ends of the two adsorption towers at the same end in the two groups of adsorption towers, so that the related structure for realizing the automatic switching is simple, and the cost is relatively low.