597 results about "Liquid carbon" patented technology

The invention relates to the technical field of compressed carbon dioxide energy storage, and discloses a liquid compressed carbon dioxide energy storage system and method. The system comprises a carbon dioxide circulation system, and the circulation system comprises a first liquid storage tank (1), a first evaporation unit (100), an energy storage unit (200), a second liquid storage tank (6), a second evaporation unit (300), an energy release unit (400) and a condensation unit (500) which are communicated in sequence. According to the system provided by the invention, a liquid compressed carbon dioxide circulating system is deeply coupled with waste heat and waste cold in an ethylene process, so that the problems of a gasification heat source of liquid carbon dioxide on a high-pressure side and a liquefaction cold source of gaseous carbon dioxide on a low-pressure side of a pressure storage system are solved; the bottleneck constraint of heat energy utilization of the conventional adiabatic compression carbon dioxide energy storage system is broken through; elastic distribution of compression heat between industrial steam production and carbon dioxide overheating can be achieved.

The invention relates to the technical field of power generation system transformation, in particular to an energy storage power generation system and method based on thermal power plant transformation. The Carnot battery unit comprises a liquid carbon dioxide storage tank, an electric heater, a compressor, a heat storage transducer heat flow channel and an expansion machine which are connected in sequence, and the liquid carbon dioxide storage tank adopts a boiler drum of a thermal power plant and stores liquid carbon dioxide liquefied by a water chilling unit of the thermal power plant; the heat storage circulating unit exchanges heat with a heat flow channel of the heat storage transducer to store heat; the steam power generation unit adopts a thermal power plant steam generator set and extracts heat stored by the heat storage circulation unit for steam power generation. The thermal power generating unit is transformed into the carbon dioxide Carnot battery energy storage system, the defect that a power grid is unstable in the process that a traditional thermal power plant is gradually converted into new energy is overcome, double stable output electric quantity is achieved, the system efficiency is improved, and meanwhile high economic benefits are achieved.

The application discloses a preparation method of a sandwich structure bio-based composite nanofiber aerogel material, and comprises the following steps: step 1), heating and stirring to dissolve low acyl gum; step 2), mixing the product obtained in step 1) with a hot aqueous solution of MXene; step 3), freeze-drying treatment of the aqueous solution of MXene to obtain a compressed layer of MXene; step 4), pasting and covering the product obtained in step 3) on an outer layer obtained in step 2), pouring the gum solution obtained in step 1) into the outer layer to obtain a sandwich structure composite hydrogel; step 5), soaking the product obtained in step 4) in a metal salt solution to harden; step 6), soaking the product obtained in step 5) in an organic solvent solution; and step 7), drying the product obtained in step 6) by using a supercritical liquid carbon dioxide drying method to obtain the sandwich structure bio-based composite nanofiber aerogel. The material has low thermal conductivity.

The invention relates to the technical field of oil and gas resource exploration and deep coal and rock gas development, in particular to a wellbore unblocking method based on hydrate impact by carbon dioxide phase change, which comprises the following steps: S1, collecting well pipe column data of a wellbore completely blocked by hydrate, and measuring the depth, temperature and pressure of the hydrate; s2, prefabricating a carbon dioxide phase change impact scheme: according to the size of an oil pipe, the strength of the oil pipe, the depth of hydrate and the pressure and temperature of a shaft above the hydrate, the length and weight of a carbon dioxide phase change device used for the operation of the well to be unblocked and the amount of liquid carbon dioxide are formulated; and S3, the carbon dioxide phase change device is put into the well. The carbon dioxide phase change impact hydrate wellbore unblocking method can be applied to wells with wellbores completely blocked by hydrates and without flow channels, has the advantages of being easy and convenient to operate, large in impact force and high in unblocking efficiency, and solves the problem that when the wellbores are completely blocked by the hydrates and no flow channels exist, the unblocking difficulty is large.

Compositions and methods are provided for a system in which liquid carbon dioxide, or a mixture of liquid and gaseous carbon dioxide, is converted to solid carbon dioxide by exiting an orifice at a sufficient pressure drop, e.g., for delivery of carbon dioxide to a concrete mixture in a mixer.

The invention discloses a liquid quantum dot fertilizer and a preparation method and application thereof.The preparation method comprises the steps that treated rice straw is smashed through a smashing machine, the smashed rice straw is placed in a closed container, an ammonia water solution is added, and after even stirring and mixing are conducted, incubation is conducted in the closed container in time under illumination; after incubation is completed, straw residues are twisted and removed, obtained leachate is liquid carbon quantum dot fertilizer, and the straw residues are returned to the field; or the incubated straw residues and the ammonia water solution are subjected to ultrasonic treatment continuously, the straw residues are removed, a liquid carbon-silicon quantum dot fertilizer is generated, and the straw residues are returned to the field. The two liquid quantum dot fertilizers have good compatibility with trace element foliar fertilizers, amino acid-containing foliar fertilizers or pesticides, can improve the crop utilization rate of the trace element foliar fertilizers and the amino acid-containing foliar fertilizers, and can realize simultaneous fertilization and disease control of crops when being mixed with the pesticides. The technology is convenient, economical, practical and efficient.

The invention belongs to the technical field of dry ice air jet, particularly relates to a dry ice air jet generating device and method, and aims to form high-speed airflow by using compressed air and dry ice particles so as to be applied to the fields of industrial cleaning, surface treatment and the like. The main device comprises an air compressor, an air storage bottle, a high-pressure hose, a stop valve, a pressure release valve, a pressure gauge, a dry ice particle preparation system, an ejector and a self-oscillation nozzle. The method comprises the steps that the air compressor compresses air to high pressure and stores the air in the air storage bottle; the liquid carbon dioxide is pressurized and conveyed into the ice forming barrel through the plunger pump, and the liquid carbon dioxide is converted into dry ice through temperature and pressure changes; and the dry ice is cut into dry ice particles by the ultrasonic knife net. Then, the dry ice particles and compressed air are mixed in the ejector and accelerated to a high speed; and finally, spraying the mixture through a self-oscillation nozzle to form a high-speed dry ice air jet flow. By means of the method, the dry ice air jet can be efficiently and stably generated, and the method is suitable for various industrial applications such as cleaning, surface treatment and sand blasting. The device is simple in structure and convenient to operate, and has high application value.

The invention relates to a carbon dioxide combined cooling heating and power supply system, which realizes liquid carbon dioxide energy storage and combined cooling heating and power supply through the technologies of liquid carbon dioxide energy storage, Brayton expansion power generation or pressure increasing heating, carbon dioxide variable-capacity stable-pressure storage and gas transmission, and provides a new energy source for safe and long-period operation and large-scale or small-scale application of an energy storage device. An efficient and feasible technical path is provided for'valley shifting and peak filling 'of photovoltaic power, wind power and a power grid, and the method is suitable for various application scenes such as subway stations, large shopping malls, refrigeration houses or large electricity users.

The invention provides a high-temperature nitrogen synergistic liquid carbon dioxide coal seam anti-reflection effect evaluation method which comprises the steps that an injection hole and a plurality of extraction holes are formed in a target coal seam, and high-temperature nitrogen synergistic liquid carbon dioxide is injected into the injection hole for coal seam anti-reflection; monitoring data in the coal seam anti-reflection process are collected through a sensor arranged on the target coal seam; the monitoring data comprises a temperature gradient of the coal seam, a micro-seismic event of an area where the coal seam is located and gas concentration obtained through extraction; based on the monitoring data, through an LSTM stage identification model, determining different stages of the coal seam anti-reflection process and evaluation values corresponding to the core indexes and the dynamic response indexes in the different stages; the different stages are a carbon dioxide phase change stage, a nitrogen thermal stress fracturing stage and a stable extraction stage; under the condition that the evaluation value meets a preset evaluation condition, the evaluation grade of the permeability increasing effect of the target coal seam is determined; through the technical scheme, the evaluation result can be more scientific and objective.

The utility model belongs to the technical field of rare earth hydrometallurgy and comprehensive utilization of resources, and particularly relates to a device for synthesizing a rare earth mixed precipitant in an ammonia-carbon reinforced manner. The utility model discloses a device for intensively synthesizing a rare earth mixed precipitator by ammonia carbon, which comprises an ammonia carbon intensified synthesis reactor, the ammonia carbon intensified synthesis reactor consists of five groups of plate bundles formed by welding herringbone corrugated plate sheets, and the five groups of plate bundles comprise two groups of gasification plate bundles for gasifying liquid carbon dioxide; the three groups of reaction plate bundles are used for mixing ammonia water and water and reacting with the bulk carbon dioxide, the five groups of plate bundles are wrapped by a metal shell, and an ammonia water, water and liquid carbon dioxide inlet and a circulating cooling water inlet and outlet are reserved outside the shell. Compared with a traditional tower reactor, the tower reactor has the remarkable advantages of being high in equipment integration degree, high in reaction efficiency, low in energy consumption and the like, the energy consumption is saved by 50%, the total investment of equipment is reduced by 50%, the occupied space of the equipment is reduced by 90%, and remarkable innovation is achieved.

The invention discloses a multi-stage self-triggering type liquid carbon dioxide grading fracturing method. The method comprises the following steps that early-stage preparation work is conducted on a multi-stage self-triggering type fracturing pipe; liquid carbon dioxide is filled into the multi-stage self-triggering type fracturing pipe; the multi-stage self-triggering type fracturing pipe is placed in a drill hole in the target fracturing position and then connected with an exploder; the exploder is started, and the multi-stage self-triggering type fracturing pipes conduct multi-stage fracturing in sequence; and after fracturing is completed, the multi-stage self-triggering type fracturing pipe is recycled for reuse. The grading self-triggering fracturing device is constructed on the basis of the gas transfer rule and the memory alloy material, the liquid carbon dioxide single-point excitation and multi-stage self-triggering grading fracturing method is provided, and the problems that power of a liquid carbon dioxide fracturing single pipe is insufficient, and wiring of multiple pipes is complex are solved.

The invention relates to a method for improving the huff-puff effect of carbon dioxide, which comprises the following steps of: when liquid carbon dioxide is injected, monitoring horizon data by using an oil well profile logging instrument, judging whether the liquid carbon dioxide is a target horizon or not by sucking the horizon data, and smoothly injecting the liquid carbon dioxide into the target horizon by adopting a process adjustment or layered injection method, so as to improve the huff-puff effect of the liquid carbon dioxide. The carbon dioxide utilization rate, the measure effect and the effective rate are improved, and the remaining oil potential tapping effect and the oil well recovery rate are improved; when the oil increasing amount of well opening oil production does not reach the standard, whether the output layer is the target layer or not continues to be monitored, if the output layer is not the target layer, the measure target layer can be replaced in time, the layered pipe column structure can be adjusted when liquid carbon dioxide is injected, the purpose that the output layer is the target layer is achieved, and the measure effective rate and effect are improved.

The invention provides a data center chip backboard cooling system with a backflow working medium separation function, and the system comprises a condensation unit which is configured to carry out condensation processing on a refrigeration working medium; the refrigeration working medium comprises liquid carbon dioxide and / or liquid hypofluoro acid; the liquid cooling unit is configured to perform refrigeration by gasifying the cooling liquid; and the cooling liquid distribution unit is configured to adjust the refrigerating capacity of the liquid cooling unit according to the cooling requirement, perform separation treatment on a backflow working medium of the liquid cooling unit, and convey the separated working medium to the condensation unit for recooling treatment. By means of the system, the problem that an existing data center cooling system lacks a working medium separation function, so that the recooling efficiency of refrigerants becomes low is solved.

The invention provides a heat-supplementing-free hydraulic compression carbon dioxide energy storage system and an energy charging and discharging circulating method.The energy charging and discharging circulating method comprises the steps that in the energy storage process, gaseous carbon dioxide is firstly subjected to adiabatic compression and then subjected to isothermal compression to obtain saturated liquid carbon dioxide, and in the energy discharging process, the liquid carbon dioxide is firstly subjected to adiabatic expansion and then subjected to isothermal compression to obtain saturated liquid carbon dioxide; isothermal expansion pushes a water impact turbine to do work for power generation; according to the characteristics of hydraulic compression carbon dioxide energy storage, an adiabatic compression-isothermal compression-adiabatic expansion-isothermal expansion energy charging and releasing thermodynamic process is provided, waste heat released in the energy storage process is fully utilized, and the circulation efficiency of the system is improved; the invention provides a double-loop control system for controlling the circulating water flow through carbon dioxide temperature feedback and controlling the power of a water feeding pump / a water turbine through carbon dioxide pressure feedback, and it is guaranteed that the actual circulating process can be conducted according to a design curve; through thermodynamic optimization of the energy charging and releasing process, heat in the energy storage process can be fully recycled, and external heat compensation is not needed.

The utility model discloses a recovery system for capturing carbon dioxide. The recovery system comprises a carbon capturing unit, a cooling unit, a drying unit, a liquefying unit and a storage unit which are sequentially connected through pipelines, after the carbon capture unit captures carbon dioxide, the carbon dioxide is cooled by the cooling unit and dried by the drying unit, then enters the liquefaction unit to be compressed and liquefied to form liquid carbon dioxide, and then the liquid carbon dioxide is conveyed to the storage unit to be stored. According to the utility model, CO2 after carbon capture can be stored after being cooled, pressurized and liquefied. The system integrates unloading and reliquefaction functions, liquid CO2 in the storage tank can be lighted to a CO2 receiver, and gaseous CO2 in the storage tank is returned to the storage tank for storage after being cooled, pressurized and liquefied. And the system is provided with a plurality of instruments and meters, so that the whole system is more automatic and safer to operate.

The invention discloses an attitude control power system based on carbon dioxide phase change gas storage, which belongs to the technical field of attitude control, and comprises a thruster, a phase change energy tube, a storage shunting mechanism and a control assembly. The phase change energy tube comprises a shell and an excitation assembly. A sealing cavity is formed in the shell and filled with liquid carbon dioxide. And excitation powder of the excitation assembly is arranged in the sealed cavity. The shell is provided with a sealed air outlet capable of being opened and closed. The storage and distribution mechanism comprises a storage tank and a distribution channel, and the storage tank communicates with the phase change energy pipe. The storage tank is communicated with the flow dividing channel, and the flow dividing channel is provided with an air supply branch pipe which can be opened and closed and corresponds to each thruster. According to the attitude control power system, the attitude adjustment cost can be reduced as much as possible and the system operation convenience can be improved while the rapid response and high specific impulse of attitude adjustment are ensured, so that the accurate regulation and control of the attitude of the aircraft can be realized.

A storage unit for an energy storage system is provided with an energy storage container for storing gaseous carbon dioxide and liquid carbon dioxide, a condenser connected to the energy storage container and used for condensing gaseous carbon dioxide into liquid carbon dioxide and an energy-storage pressure-maintaining flow path forming a closed-loop connection with the energy storage container and the condenser; and in an energy storage stage of the energy storage system and in an interval time period of energy storage and energy release, gaseous carbon dioxide in the energy storage container can flow into the condenser via the energy-storage pressure-maintaining flow path, to be condensed into liquid carbon dioxide, and then flow back to the energy storage container, so as to stabilize, in the energy storage stage, the pressure of the energy storage container in a design pressure range.

The utility model discloses a carbon dioxide fracturing device with a flying stopping device, which comprises a fracturing device body which is cylindrical on the whole, a cavity is arranged in the fracturing device body, liquid carbon dioxide is filled in the cavity, and a filling head used for filling the liquid carbon dioxide into the cavity is arranged at the front end of the fracturing device body. A cavity is formed in the fracturing device body, a heating pipe extending into the cavity is arranged on the front side of the fracturing device body, an energy release channel communicated with the rear end of the cavity is formed in the fracturing device body, a constant-pressure shearing piece used for sealing a front end opening of the energy release channel is arranged at the rear end of the cavity, the flying stopping device is arranged at the rear end of the fracturing device body, and a power input end at the front end of the flying stopping device is communicated with the rear end of the energy release channel. The fracturing device is simple and convenient to operate, the working efficiency is greatly improved, the fracturing device and the rock mass are jacked into a whole by utilizing the impact force of high-pressure airflow during blasting, the phenomenon of pipe flying is effectively avoided, and the fracturing device has important significance on the safety of field work and the improvement of the working efficiency and the economic benefit, and can be suitable for larger hole diameter range of blast holes.

The invention belongs to a urea synthesis system using liquid carbon dioxide and a urea synthesis method. Comprising a urea synthesis tower, the urea synthesis tower is respectively connected with a liquid ammonia pipeline and a carbon dioxide gas pipeline, the carbon dioxide gas pipeline is connected with an outlet of a liquid-phase carbon dioxide delivery pump through a liquid-phase carbon dioxide vaporization unit, and an inlet of the liquid-phase carbon dioxide delivery pump is connected with a liquid-phase carbon dioxide delivery pipeline; liquid carbon dioxide is directly used as a raw material, a liquid-phase carbon dioxide delivery pump is used for pressurization, and gasification is carried out after pressurization, so that the liquid carbon dioxide meets the requirements of a urea synthesis tower, and the characteristics of saving urea synthesis energy consumption, reducing the use amount of circulating water and reducing the occupied area of equipment are achieved.

The invention belongs to the field of carbon dioxide compression energy storage, and discloses a heat exchange type hydraulic compression carbon dioxide storage tank and an operation method, the heat exchange type hydraulic compression carbon dioxide storage tank comprises a tank body, an air bag is arranged on the upper part of the tank body for injecting or discharging a water working medium, a carbon dioxide working medium is stored in a cavity between the tank body and the air bag, and a heat exchange part is arranged on the lower part of the tank body. During energy storage, a water working medium is injected into the air bag to expand and compress a carbon dioxide working medium, and meanwhile, cooling circulating water is introduced into the heat exchange part to cool and liquefy high-temperature gaseous carbon dioxide and accumulate at the tank bottom; during energy release, high-temperature water is introduced into the heat exchange part to heat liquid carbon dioxide at the bottom to vaporize and expand, and the expanded carbon dioxide extrudes the air bag to discharge water working medium to drive the water turbine to do work. According to the storage tank, the investment cost and the operation energy consumption are remarkably reduced, meanwhile, the core problem that the heat transfer efficiency in the storage tank is low is solved, and the overall performance and the state conversion efficiency of the system are improved.

The invention provides a preparation method of a carbon dioxide-assisted water-foamed PIR material, which comprises the following steps: S1, filling polyester polyol and polyether polyol into a reaction kettle, adding a foam stabilizer, a chemical foaming agent, a foaming catalyst, a flame retardant and a chemical foaming agent, and then injecting liquid carbon dioxide to obtain a component A; and S2, taking isocyanate as a component B, mixing the component A and the component B according to a weight ratio of 1: (1.7-2), and carrying out foaming molding by a high-pressure foaming machine. According to the invention, carbon dioxide is adopted to assist water foaming, water is taken as a main chemical foaming agent, liquid carbon dioxide is introduced as a physical foaming agent for synergistic foaming, and the liquid carbon dioxide can generate a large number of uniform bubble nucleation points at the moment of mixing, so that a finer and more uniform closed cell structure can be formed; this is the basis for obtaining excellent thermal insulation and mechanical properties.

The present application provides a ship carbon dioxide tail gas treatment system, the system captures high concentration carbon dioxide captured by traditional CCS capture device, realizes carbon dioxide tail gas utilization electric conversion through electro-catalytic reduction technology, stores or directly discharges liquid organic product mainly in formic acid / formate, replaces existing liquefied storage CCS scheme, reduces energy consumption and storage space, and the product has higher economic value than liquid carbon dioxide.

The application discloses a direct air carbon dioxide capture and utilization system and method using LNG cold energy, which comprises an LNG gasification cold release device, an air carbon dioxide capture device and a carbon dioxide utilization device; ambient air is cooled and dehumidified by a low-temperature cold energy heat exchanger of the LNG gasification cold release device and then enters the air carbon dioxide capture device; when desorbing carbon dioxide, humid carbon dioxide released by the air carbon dioxide capture device is first cooled and dehydrated by the low-temperature cold energy heat exchanger of the LNG gasification cold release device, and then is cooled and liquefied by the low-temperature cold energy heat exchanger of the LNG gasification cold release device to obtain liquid carbon dioxide product. The application solves the problem that the capture efficiency of the direct air carbon dioxide capture system is easily affected by the humidity of ambient air, and through air cooling and dehumidification, humid carbon dioxide product gas is cooled, dehydrated, liquefied and dry ice is prepared, so that the cycle efficiency of air carbon dioxide capture and the system energy utilization efficiency are effectively improved.

The invention belongs to the technical field of liquid carbon dioxide transport ships, and particularly relates to a novel liquid carbon dioxide transport ship adopting a fiber composite liquid cargo tank. The ship comprises a main ship body. The main ship body comprises a tail module, a cabin module, a cargo compartment module and a head module. A plurality of independent cargo compartment chambers are arranged in the cargo compartment module, and the adjacent cargo compartment chambers are separated through transverse compartment walls; an independent carbon dioxide liquid cargo tank, a top ballast tank and a bottom ballast tank are arranged in each independent cargo compartment; the carbon dioxide liquid cargo tank is made of a fiber composite material or a combination of steel and the fiber composite material and comprises an inner container and a winding layer, and the cross section of the carbon dioxide liquid cargo tank is of a bilateral symmetry polygonal structure. The carbon dioxide liquid cargo tank is connected with the hull structure through supporting blocks. The liquid carbon dioxide transport ship is high in cargo hold area capacity utilization rate, high in stability and reliability and low in capacity requirement for hoisting facilities in the construction process.

The invention belongs to the technical field of mine slope treatment and dangerous rock body removal, and particularly relates to a mine high slope wedge-shaped dangerous rock body staggered step gas blasting construction method. The method comprises the following steps that construction preparation is conducted, the boundary of the dangerous rock mass is determined, and drill holes are designed; the fracturing device is filled, specifically, the fracturing device is assembled and filled with liquid carbon dioxide; drilling is conducted, specifically, drilling holes are formed according to the step staggering sequence; a fracturing device is installed in a pipe, specifically, the fracturing device is installed in the hole and filled; detonating operation: connecting a detonating network in series and exciting; checking and recycling, namely recycling the equipment after safety is confirmed. According to the method, accurate and controllable crushing of rocks is achieved by optimizing the drill hole arrangement and the staggered step blasting sequence and utilizing huge pressure generated by phase change of liquid carbon dioxide, the defects that a traditional blasting technology is poor in safety, large in environmental pollution, serious in disturbance and the like are overcome, and the method is particularly suitable for dangerous rock mass treatment engineering of mine high slopes and adjacent sensitive facilities.

The invention relates to the field of energy conservation and emission reduction, in particular to a zero-carbon building which comprises a building body, and a heat preservation structure is arranged outside the building body. The carbon dioxide refrigerating and heating system comprises a carbon dioxide system host and a pipeline communicated with the carbon dioxide system host, the carbon dioxide system host is used for converting carbon dioxide, and the pipeline is used for outputting carbon dioxide; the solar cell panel is mounted outside the building main body and supplies power to the host; the heat collector is mounted outside the building main body, so that the carbon dioxide refrigerating and heating system exchanges heat with the outside; the energy accumulator is used for storing heat of the heat collector and / or the carbon dioxide refrigerating and heating system and providing heat for the carbon dioxide refrigerating and heating system; and the energy consumption pieces are all mounted in the building main body and exchange heat with the high-temperature and high-pressure gaseous carbon dioxide or the low-temperature and low-pressure liquid carbon dioxide. The method has the effect of reducing the carbon emission in the daily use process of building facilities.

The present application relates to a kind of natural gas combustion flue gas separation utilization method and its system, comprising the following steps: S1, the flue gas to be treated is catalytically oxidized, so that residual oxygen in flue gas is fully reacted and eliminated;S2, flue gas enters preheater, heat exchange is carried out in preheater, so that the heat of flue gas is reduced;S3, compressor is used to compress flue gas, the temperature of flue gas is increased after being compressed by compressor, high temperature flue gas enters heat exchanger and is cooled by cooling water, wherein the water vapor contained is formed into liquid after cooling and discharged etc..The present application has the advantages that: flue gas generated by natural gas combustion is compressed and two-stage expansion refrigeration is used, liquid carbon dioxide and liquid nitrogen are separated in turn. The separation and utilization of natural gas combustion flue gas are realized, and the carbon dioxide discharged to the atmosphere is significantly reduced.

The application provides a compressed carbon dioxide energy storage system coupling low-temperature molten salt and direct air carbon capture, and relates to the field of energy storage, comprising: a carbon dioxide gas bag, the outlet gas of which is compressed by a carbon dioxide compressor unit, cooled by a subcooler to form liquid carbon dioxide, and sent to a high-pressure liquid carbon dioxide storage tank for storage, the compression heat generated in the carbon dioxide compression process is stored in a hot water tank in the form of hot water; the liquid carbon dioxide output by the high-pressure liquid carbon dioxide storage tank is sequentially passed through a preheater, a primary heater, a primary carbon dioxide turbine, a secondary heater, a secondary carbon dioxide turbine, and then the output carbon dioxide is cooled by a cooler and input into the carbon dioxide gas bag; an external molten salt device provides molten salt heat exchange for the heat conducting oil of the primary heater and the secondary heater; the outlet water of the hot water device provides heat for the regeneration process of a carbon capture device, and the outlet water of the carbon capture device is input into a cold water device. The application uses large-scale long-time energy storage technology to improve the heat utilization rate and peak capacity of a photothermal power station.

The efficient atomization fire extinguishing device comprises a liquid carbon dioxide bottle set, a perfluorohexanone bottle set, a pump, a mixing device, a conveying pipeline and a nozzle, the liquid carbon dioxide bottle set is connected with the mixing device through a first conveying pipe, and the perfluorohexanone bottle set is connected with the mixing device through a second conveying pipe; the pump is connected with the perfluorohexanone bottle group through a third conveying pipe, the mixing device is connected with the conveying pipeline through a first measuring pipe, the perfluorohexanone bottle group is connected with the conveying pipeline through a fourth conveying pipe, and the conveying pipeline is connected with the nozzle through a second measuring pipe. According to the invention, the process of mixing and gasifying the fire extinguishing agent in front of the nozzle can be effectively simulated, and a good reference is provided for actual operation.

The present application relates to the technical field of metal powder preparation, and specifically discloses a method for preparing metal powder with low oxygen content. A method for preparing metal powder with low oxygen content, comprising: S1, weighing metal raw materials and smelting to obtain molten metal; S2, atomizing the smelted molten metal through an ultrasonic atomizing device, using liquid carbon dioxide and argon as cooling media to cool the molten metal to form metal powder; S3, placing the metal powder in a closed reactor, using argon as a carrier gas, passing it into a container filled with aluminum isopropoxide solution and zirconium acetylacetonate solution, atomizing the two solutions through an atomizing nozzle and reacting them with the metal powder; S4, adding the metal powder after the S3 reaction into a pulse current heating device for pulse deoxygenation treatment. The metal powder of the present application can meet the material performance requirements of high-end fields such as aerospace, precision machinery manufacturing, etc., and has the advantages of low oxygen content and high sphericity.