69 results about "Liquid carbon" patented technology

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.

This invention discloses a method for preparing a carbon source for microbial culture medium based on enzymatic hydrolysis of bamboo powder and its application, belonging to the field of high-value utilization technology of biomass resources. Using bamboo powder as raw material, the invention involves mild alkali pretreatment to disrupt the dense structure of lignocellulose, followed by enzymatic hydrolysis using a specialized enzyme system of endoglucanase Cel7B and xylanase XynA expressed heterologously by *E. coli* in an optimized ratio. After solid-liquid separation, an enzymatic hydrolysate rich in reducing sugars is obtained. The hydrolysate is then nutritionally fortified with trace elements such as sodium thiosulfate and sodium silicate to produce a low-cost, high-efficiency liquid carbon source. This invention achieves high-value utilization of bamboo waste. The entire process is mild, environmentally friendly, and simple, easily scaled up industrially, and solves the industry bottleneck of high carbon source cost in industrial microbial culture, demonstrating good application prospects and market value.

The utility model relates to low temperature gas cylinder filling technical field, concretely relates to a kind of argon and carbon dioxide mixed gas filling equipment including base, the upper surface of the base is fixedly connected with two symmetrical support frames, the inner wall of two The support frame is respectively provided with liquid argon storage tank and low-temperature liquid carbon dioxide storage tank, the outer wall between two The support frame is fixedly connected with support plate, the inner wall of the support plate is fixedly connected with mixing box, the inner wall of the liquid argon storage tank is fixedly connected with argon filling pipeline. The utility model is provided with filling busbar, can be connected with multiple gas steel cylinders simultaneously, realize the filling of multiple gas steel cylinders simultaneously, accurately control the filling amount of two kinds of gas, to ensure that argon and carbon dioxide are mixed according to specific ratio, while impeller can fully stir and mix argon and carbon dioxide entering mixing box, ensure that mixed gas composition is uniform, improve the use effect of the filling equipment.

The application relates to a high-performance heat-resistant connecting hose processing device and a processing technology, and relates to the field of rubber tube processing equipment. The high-performance heat-resistant connecting hose processing device comprises an injection molding machine body and a cooling device. The cooling device comprises a base, a cooling sleeve and a cooling circulation component. The cooling sleeve is arranged on the base and is horizontally arranged in a circular column shape. The inside of the cooling sleeve is hollow. The cooling sleeve is filled with liquid carbon dioxide used for cooling the hose. The hose is coaxially and horizontally arranged in the cooling sleeve. The cooling circulation component is communicated with the cooling sleeve and is used for cooling the liquid carbon dioxide in the cooling sleeve. The liquid carbon dioxide has good cooling effect. The cooling circulation component can continuously keep the liquid carbon dioxide in a low-temperature state, so that new refrigerants are not needed to be added for circulation, the consumption of the cooling medium is reduced, and energy saving and environmental protection are facilitated.

This invention discloses a rapid precooling system and method for a liquid hydrogen refueling station, belonging to the field of liquid hydrogen technology. The precooling system includes a liquid hydrogen refueling pipeline, a liquid hydrogen supply tank, a valve subsystem, a liquid hydrogen refueling tank, a circulation pipeline, a condenser, a gas-liquid separator, a liquid carbon dioxide tank, a storage cylinder, a helium pipeline, a high-pressure helium cylinder, a fuel cell, a cryogenic hydrogen pipeline, and a liquid hydrogen storage tank group. This system utilizes liquid carbon dioxide and cryogenic helium to achieve deep coupling between system displacement and precooling operations. After displacement, the system temperature has dropped below the temperature of liquid carbon dioxide, significantly reducing precooling time. It also utilizes cryogenic hydrogen stored in the liquid hydrogen storage tank group to liquefy carbon dioxide, achieving carbon dioxide medium circulation. Simultaneously, the hydrogen released after cooling and the hydrogen generated during precooling are transported to the fuel cell for power generation, improving hydrogen utilization efficiency.

This invention relates to the field of new energy and liquid carbon fuel technology, specifically to a high-cleanliness methanol alternative fuel for vehicles and its preparation method. The method includes raw material mixing and vaporization, atmospheric pressure gas-phase catalysis, and multi-stage condensation and separation steps. The method combines base methanol with hydrocarbon additives and introduces them into a composite mixed-bed molecular sieve catalyst containing aromatic cascade, etherification, and alkylation active units, as well as an anti-coking flow carrier. Its core principle is to enhance the octane number by following the atmospheric pressure gas-phase aromatization and cascade mechanism, generate ethers in situ as phase stabilizers and hydrogen bonding agents, and utilize a mesoporous carrier to reduce steric hindrance and promote macromolecular desorption. This invention differs from the high-pressure reaction conditions of traditional methanol-to-gasoline processes by overcoming the defects of methanol fuel phase separation upon contact with water and catalyst coking through a one-step atmospheric pressure gas-phase conversion. It eliminates the need for physical co-solvents and significantly extends the catalyst regeneration cycle.

The present invention relates to a carbon dioxide capture system (1) comprising a desublimation device (2) delimited by an enclosure (4), a thermal regulation circuit (26) extending within the enclosure (4), and an outlet line (16) for liquid carbon dioxide connected to the enclosure (4), the enclosure (4) comprising a portion (30) for recovering carbon dioxide in liquid state that communicates with the outlet line (16), the desublimation device (2) comprising a means (32) for controlling drainage of molten carbon dioxide from the recovery portion (30), the carbon dioxide capture system (1) comprising a blocking member arranged on the outlet line (16) and controlled by the control means (32).

This invention discloses a carbon dioxide-based data center cooling system, belonging to the field of data center thermal management technology. The system includes a cooling device, at least one storage tank, a coolant distribution unit, an inlet manifold, and an outlet manifold. The cryogenic liquid carbon dioxide produced by the cooling device is stored in the storage tank and transported to server racks within the data center via the distribution unit and pipelines to cool high-power AI chips. The cooled working fluid returns to the cooling device for recycling. The system provides two cooling implementation methods: one is direct cooling of the chips with liquid carbon dioxide; the other is indirect cooling through an independent carbon dioxide circulation loop formed by an intermediate heat exchanger. Furthermore, the system integrates a waste heat recovery unit, which can use the compression heat generated by the cooling device for power generation or district heating. This invention utilizes carbon dioxide as the working fluid to achieve efficient cooling and comprehensive energy utilization for data centers, offering advantages such as high energy efficiency and environmental friendliness.

This invention relates to the field of energy-saving and environmentally friendly carbon dioxide purification technology, specifically a carbon dioxide purification method and system based on temperature-switching adsorption. The method includes: removing condensate impurities from pre-acquired industrial-grade carbon dioxide feed gas to obtain pre-treated carbon dioxide feed gas; desulfurizing the pre-treated carbon dioxide feed gas to obtain desulfurized carbon dioxide process gas; subjecting the desulfurized carbon dioxide process gas to temperature-switching adsorption to obtain low-impurity carbon dioxide process gas; distilling the low-impurity carbon dioxide process gas to remove heavy components to obtain refined carbon dioxide gas; and cooling and liquefying the refined carbon dioxide gas to obtain electronic-grade liquid carbon dioxide. This invention can improve the precision of carbon dioxide purification in industrial production.

This invention provides a membrane-coupling decarbonization system, comprising a cold box, a pretreatment unit, a flash tank, a distillation column, a bottom reboiler, a top condenser, a top reflux tank, a carbon dioxide subcooler, a membrane separator, a throttling device, a first carbon dioxide compressor, a second carbon dioxide compressor, and a carbon dioxide expander. It is used to decarbonize associated gas or natural gas from oil fields, and to separately export the separated natural gas and high-purity carbon dioxide. The membrane-coupling decarbonization system provided by this invention utilizes the liquid carbon dioxide separated within the distillation column itself. After expansion and cooling by the carbon dioxide expander, the carbon dioxide enters the top condenser for evaporation. The cooling energy released during evaporation is directly supplied to the top condenser, achieving the effect of completely eliminating the need for external refrigeration units and external refrigerants in the top condensation stage of the distillation column.

This utility model relates to the field of low-temperature extraction technology and discloses a low-temperature extraction structure for fragrance processing. It includes a base, an extraction tank fixedly connected to the outer wall of the base, a discharge port fixedly connected to the outer wall of the extraction tank, and a water inlet fixedly connected to the outer wall of the extraction tank. A quick-release assembly is provided on the outer wall of the water inlet. The quick-release assembly includes a retaining shell, the inner wall of which is fixedly connected to the outer wall of the water inlet. A limiting plate is fixedly connected to the inner wall of the water inlet, and a cylinder is slidably connected to the inner wall of the limiting plate. A spring is fixedly connected to the outer wall of the cylinder, and a locking head is fixedly connected to one end of the cylinder. A water inlet is slidably connected to the inner wall of the retaining shell. In this utility model, when the water inlet is placed into the retaining shell until the two locking heads are fully compressed into the water inlet, the liquid carbon dioxide in the water inlet can enter the extraction tank to begin extraction, solving the problem of inconvenient installation and disassembly of the device.

The application discloses a liquid carbon dioxide offshore jacket type injection and storage system and relates to the field of carbon capture, which comprises CO2 submarine conveying pipelines, a CO2 receiving module, a CO2 filtering module, a CO2 leakage detection module, a CO2 heating module, a CO2 phase property monitoring module, a CO2 metering module and a CO2 injection manifold connected in sequence, wherein the CO2 injection manifold is connected to the submarine through an injection riser; the CO2 phase property monitoring module is further connected to a CO2 exhaust module through a branch pipeline, the CO2 exhaust module is connected to a CO2 reprocessing module, and the CO2 reprocessing module is connected to the CO2 heating module; the CO2 phase property monitoring module further extends a control signal line connected to the CO2 exhaust module; and the CO2 phase property monitoring module further extends a feedback signal line connected to the CO2 heating module. The application improves the high efficiency, safety and environmental protection of CO2 storage.

This system provides a liquid carbon dioxide storage system that can continue shipping liquid carbon dioxide without suspending shipments of the entire system, even if there is a possibility that carbon dioxide solidification may occur in some storage tanks and piping. [Solution] The liquid carbon dioxide storage system 1 comprises a plurality of carbon dioxide storage tanks 110A1 to 110D6 capable of storing liquid carbon dioxide, piping for discharging liquid carbon dioxide from the storage tanks, a shut-off means 600 for shutting off the discharge of liquid carbon dioxide from the piping, a pump unit 130 for pressurizing the liquid carbon dioxide discharged from the piping, a shipping pipe 150 for supplying the pressurized liquid carbon dioxide to the destination, and a control unit 700 for controlling the shut-off means 600. The control unit 700 shuts off the discharge of liquid carbon dioxide using the shut-off means 600 when solidification of the liquid carbon dioxide is anticipated.

The present application relates to the technical field of air conditioning equipment, and discloses a carbon-nitrogen integrated machine, which comprises an air conditioning box, a gasification cavity and a regulating cavity formed by separation, a total liquid inlet pipe, a gasification pipe group and a bus pipe group are arranged in the gasification cavity; a controller and a control assembly are arranged in the regulating cavity, a switching device for switching liquid nitrogen or liquid carbon is arranged on the total liquid inlet pipe, the gasification pipe group comprises a plurality of parallel gasification pipe areas and a regulating gasification pipe area, each gasification pipe area is provided with a gasification branch pipe with a heat dissipation fin plate and a side branch pipe, and the liquid inlet path is switched through an electromagnetic reversing valve, the control assembly comprises a high-pressure temperature control chamber, a plate heat exchanger and a multi-stage control valve, and accurate temperature control, pressure control and quantity control of the gas are realized; the present application also relates to an air conditioning method of the carbon-nitrogen integrated machine, which comprises the steps of installation, liquid input, gasification, defrosting and carbon-nitrogen switching, and realizes the alternate and efficient supply of nitrogen and carbon dioxide. The present application is convenient to switch and accurate in gas control, and is suitable for various air conditioning occasions such as grain storage.

The utility model discloses a kind of liquid carbon dioxide storage tank vent gas recovery systems, including liquid carbon dioxide storage tank, with the liquid carbon dioxide storage tank communication's discharge pipeline and the pressure relief valve being set on discharge pipeline, the condenser is additionally provided on the discharge pipeline;The impurity discharge pipe is connected with the pressure relief valve, for discharging unliquefied impurity gas;The position of the condenser is higher than the liquid level height of the liquid carbon dioxide storage tank, ensure that liquefied liquid carbon dioxide is self-flowed back into the liquid carbon dioxide storage tank by gravity;The utility model increases a condenser on the discharge pipeline after the carbon dioxide evaporation of storage tank, and the carbon dioxide condensation liquefaction liquid carbon dioxide after evaporation is carried out by condenser, nitrogen in carbon dioxide evaporation gas continues to discharge after pressure relief after pressure relief valve;Not only can the recovery of carbon dioxide vent gas be realized, but also the purity of carbon dioxide can be improved.

The invention discloses a multi-energy complementary energy storage zero-carbon power generation system for a coal-fired power plant, which integrates electrolytic hydrogen production, oxygen energy storage, oxygen-enriched combustion and carbon capture and utilization processes, and comprises an electrolysis device for decomposing water by using electric energy to generate hydrogen and byproduct oxygen; the liquefaction storage unit is connected with the electrolysis device and is used for liquefying at least part of the byproduct oxygen and storing the liquefied byproduct oxygen as liquid oxygen; the expansion generator set is connected with the liquefaction storage unit and is used for pressurizing and gasifying the liquid oxygen and expanding to do work so as to generate power; the coal-fired boiler is connected with the expansion generator set, and is used for receiving the oxygen after expansion power generation as a combustion improver to carry out oxygen-enriched combustion with coal; and the carbon capturing and purifying device is connected with the coal-fired boiler and is used for treating high-concentration carbon dioxide flue gas generated by oxygen-enriched combustion to obtain liquid carbon dioxide.

This invention relates to the field of rock mechanics testing instruments, and discloses a fluid-solid isolation strain rate shear strength testing device and method in rock. The device includes a high-pressure power source assembly, a fluid-solid isolation force transmission assembly, a rock shear testing assembly, a core collection assembly, and a signal acquisition unit. The high-pressure power source assembly includes a liquid storage tank for storing liquid carbon dioxide, with an injection port and a detonation port on the tank. The fluid-solid isolation force transmission assembly includes a transfer cylinder and a transmission piston. The rock shear testing assembly includes a constraint ring and a flexible centering support assembly. The core collection assembly includes a flexible baffle facing the shear opening and a core collection box located below the shear opening. The signal acquisition unit includes the pressure sensor and a non-contact laser displacement sensor. This invention enables low-cost and high-efficiency testing of strain rate shear strength in rock.

This invention proposes a cooling system suitable for server motherboards, relating to the field of cooling technology. The cooling system includes a cooling component, a cooling chamber, and a cooling plate. A gas-solid mixture generated by the cooling component is sprayed onto the cooling plate through the cooling chamber, rapidly cooling the chip attached to the back of the cooling plate. The cooling component includes a reaction element and a spray element connected to the reaction element. The cooling chamber and the spray element are connected by threads. The cooling plate is fixedly connected to the bottom of the cooling chamber, and the cooling plate is in close contact with the chip. The reaction element converts liquid carbon dioxide into subcritical carbon dioxide, which is then sprayed into the cooling chamber through the spray element. Because the cooling plate is positioned in the spray direction of the spray element, the gas-solid mixture is ultimately sprayed directly onto the cooling plate, rapidly cooling it and consequently, the chip attached to the cooling plate is also rapidly cooled.

This invention relates to a hybrid energy storage method, apparatus, and electronic device based on electrochemical and physical methods, comprising: a grid monitoring unit that monitors the supply-demand difference between the grid supply and the load, and notifies an energy storage control unit when the supply-demand difference exceeds a first supply-demand difference threshold; an energy storage control unit that connects a sodium-carbon dioxide battery to the grid when the supply-demand difference is less than a power threshold, and otherwise connects a compressed carbon dioxide energy storage unit to the grid; a sodium-carbon dioxide battery that uses surplus power from the grid for charging and energy storage, and stores the generated low-pressure carbon dioxide gas in a low-pressure carbon dioxide storage tank; and a compressed carbon dioxide energy storage unit that uses surplus power from the grid to compress, cool, and condense the low-pressure carbon dioxide gas in the low-pressure carbon dioxide storage tank before outputting it to a high-pressure liquid carbon dioxide storage tank for storage. This can improve energy utilization efficiency.

FIELD: pipeline cleaning.SUBSTANCE: invention relates to methods of cleaning using liquid and can be used in various fields of industry for cleaning pipelines from oil and operational contaminants. A method for cleaning the internal surfaces of pipelines with supercritical carbon dioxide, in which carbon dioxide is used as the working medium, which is in a supply tank in a liquid state, which is supplied to a pump, the pressure of the working medium is maintained above the critical pressure for carbon dioxide, the working medium is heated to a temperature above the critical temperature for carbon dioxide, thereby converting carbon dioxide into a supercritical fluid state, the working medium is directed to the pipeline to be flushed, where it is flushed using the working medium, after which the working medium is cooled to a temperature below the critical temperature for carbon dioxide, thus converting carbon dioxide into a liquid state, then the working medium passes through a filter and returns to the supply tank, whereas at first the circulation circuit of the working medium is filled with liquid carbon dioxide from a make-up cylinder, the pump circulating the working medium is located in the supply tank, the pressure of the working medium required for the transition of the working medium to a supercritical fluid state is created by feeding nitrogen from a pressure cylinder into the gas cap of the supply tank, the working medium is heated to a temperature above the critical temperature for carbon dioxide and cooling the working environment to a temperature below the critical temperature for carbon dioxide using Peltier elements.EFFECT: simplification of the design of an installation for cleaning the internal surfaces of pipelines with supercritical carbon dioxide.1 cl, 1 dwg

This utility model relates to the field of anti-icing coating testing technology, and provides an anti-icing coating testing device using rapid cooling with liquid carbon dioxide. The device includes an aluminum substrate, an aluminum vaporization grid, and a test sample. The test sample is positioned on the top of the aluminum substrate, and the aluminum vaporization grid is positioned on the bottom of the aluminum substrate. A liquid carbon dioxide inlet is located in the middle of the left side of the aluminum vaporization grid, and a carbon dioxide outlet is located in the middle of the right side of the aluminum vaporization grid. This utility model utilizes the principle of heat absorption during liquid carbon dioxide vaporization to rapidly reduce the temperature of the aluminum substrate in a short time, quickly simulating the icing / icing phenomenon under actual extreme low-temperature environments. Compared to traditional testing methods, this significantly shortens the testing cycle, allowing for rapid testing of the anti-icing coating performance, effectively improving testing efficiency, and saving considerable time and costs for research and development and production. Simultaneously, the realistic simulation of extreme environments enhances the practicality and reference value of the test results.

The application discloses a kind of MOCVD preparation method and device of wafer level single crystal molybdenum disulfide;The preparation method uses six carbonyl molybdenum Mo (CO) 6 and liquid carbon disulfide CS2 as molybdenum source and sulfur source respectively, different from traditional MOCVD growth process, precursor used in the application does not contain hydrogen element, avoid the side effect caused by hydrogen element, and increase the pre-reaction of source cracking, by introducing oxygen, generate intermediate product molybdenum trioxide (MoO3) and sulfur element (S) in pre-reaction chamber, to the reaction chamber on the substrate surface deposition, effectively avoid the introduction of carbon impurities, realize the nucleation and epitaxial growth of single crystal orientation on the substrate surface, obtain high uniformity and continuity single crystal molybdenum disulfide film, realize 6 inch and above size single crystal wafer scale preparation, meet the key needs of high density, high performance electronic device integration.

Title of the invention: Carbon dioxide capture system. The present invention relates to a carbon dioxide capture system (1) comprising a desublimation device (2) delimited by an enclosure (4), a thermal regulation circuit (26) extending within the enclosure (4), and a liquid carbon dioxide outlet line (16) connected to the enclosure (4). The enclosure (4) comprises a liquid carbon dioxide recovery portion (30) communicating with the outlet line (16). The desublimation device (2) comprises a control means (32) for draining the fused carbon dioxide from the recovery portion (30). The carbon dioxide capture system (1) comprises a blocking element disposed on the outlet line (16) and controlled by the control means (32). Abstract figure: Figure 1

The application discloses a high-reliability electromagnetic valve with a self-adaptive sealing surface and a detachable valve core, which comprises a valve body, a valve seat, a valve core assembly, a shell, a connecting sleeve, a core guide seat and a core driving assembly; the valve seat is internally provided with a fluid channel for connecting a fluid inlet and a fluid outlet; the core driving assembly is used for driving the valve core assembly to open or block the fluid channel under electromagnetic force; the valve core assembly comprises a valve core connecting seat, a first spring, an abutting block, a swing valve core, a valve core outer sleeve, a limiting sleeve, a second spring and a valve core inner sleeve; the valve core assembly top is detachably connected with the core driving assembly, so that the valve core assembly can be individually replaced after being worn, thereby reducing maintenance cost; meanwhile, the swing valve core can swing slightly relative to the valve core inner sleeve, so as to automatically adjust a sealing fitting angle, reduce uneven sealing fitting and local leakage problems, and effectively improve sealing reliability and service life of the electromagnetic valve in a liquid carbon dioxide conveying process.

The utility model relates to the technical field of pipe pile for building engineering provides a kind of liquid carbon dioxide sampling system, including sampling steel bottle, it is characterized in that, the inlet end of sampling steel bottle is equipped with pressure gauge, inlet valve F1, the inlet end of inlet valve F1 is connected with carbon dioxide storage equipment or carbon dioxide conveying pipeline, pressure gauge is equipped with gas circuit converter between the inlet valve of sampling steel bottle, the first outlet of gas circuit converter is connected with the inlet valve of sampling steel bottle, the second outlet of gas circuit converter, the outlet valve of sampling steel bottle is connected with liquefier by stainless steel pipeline, the outlet of liquefier is communicated with carbon dioxide storage equipment or carbon dioxide conveying pipeline.The utility model not only avoids the waste of gaseous carbon dioxide when sampling, but also avoids the harm of air leakage or exhaust action to operator, improves the security of sampling.

This utility model belongs to the field of dry cleaning technology and discloses a dry carbon dioxide snowflake cleaning system. It includes a liquid carbon dioxide unit, a compressed gas unit, and a nozzle. The liquid carbon dioxide unit provides a stable supply of liquid carbon dioxide. The compressed gas unit includes a first compressed gas supply component, a first switching valve, and a heating element. Along the flow direction of the compressed gas, the first compressed gas supply component, the first switching valve, and the heating element are sequentially connected. The nozzle is provided with a first inlet, a second inlet, and a cleaning port. The liquid carbon dioxide unit is connected to the first inlet via a first pipe, and the heating element is connected to the second inlet via a second pipe. The cleaning port is connected to both the first and second inlets, allowing liquid carbon dioxide and compressed gas to be sprayed from the cleaning port to clean the surface of the part to be cleaned. The dry carbon dioxide snowflake cleaning system provided by this utility model saves energy and improves the service life of the heating element.

This invention relates to the field of biomass energy and waste resource utilization technology, specifically a system and method for the co-production of biogas and liquid carbon dioxide through dry anaerobic fermentation of straw. The system integrates a pretreatment module, an anaerobic fermentation and biogas collection and storage module, an anaerobic digestion liquid solid-liquid separation module, a biogas purification and upgrading module, a carbon capture and liquefaction module, and an energy cascade utilization and by-product treatment module. A non-clogging vacuum feeding and discharging system for transporting the mixed materials is installed between the pretreatment module and the anaerobic fermentation and anaerobic digestion liquid solid-liquid separation module. This invention innovatively integrates multiple independent process units, forming a closed loop from straw to various high-value products. It solves the problems of short chains and fragmented processes in traditional processes. The final products include biogas, electricity, liquid CO2, biomass fuel, and organic fertilizer, achieving "five outputs" (biogas, electricity, liquid CO2, biomass fuel, and organic fertilizer), maximizing the value of straw and possessing extremely high market adaptability and risk resistance.

This invention relates to the field of polymer foaming materials technology, and discloses a high-strength elastomer composite material and its supercritical CO2 foaming molding process. The process includes preparing a composite precursor using ethylene-1-octene copolymer, ethylene-methacrylic acid copolymer zinc salt, maleic anhydride graft, and antioxidant; placing it in an autoclave, simultaneously injecting liquid carbon dioxide and anhydrous ethanol as a co-solvent; after constant temperature and pressure permeation equilibrium, cooling and step-depressurization foaming are performed, followed by curing to obtain the final product. This invention improves matrix compatibility through a dynamic physical cross-linking network formed by polar groups and zinc ions; during the permeation stage, anhydrous ethanol induces network dissociation, reducing gas permeation resistance and promoting diffusion; during the foaming stage, the vaporization and extraction of anhydrous ethanol causes instantaneous reconstruction of the cross-linking network, forming a strain hardening effect to support cell expansion, preventing gas escape and cell collapse, ultimately obtaining a high-strength foamed material with intact cell structure and excellent mechanical properties.

This invention relates to a filter aid microcapsule, its preparation method, and its application. The filter aid microcapsule includes a shell and a core cavity located inside the shell; the core cavity is filled with liquid carbon dioxide; the shell, in a radial direction from the core cavity to the shell, sequentially includes a urea-formaldehyde resin layer and a poly(methacryloyloxyethyltrimethylammonium chloride) layer. This invention uses filter aid microcapsules to aid in the flocculation and dewatering of coal slime. The filter aid microcapsules can achieve intelligent control of flocculation followed by deflocculation, meaning that during the settling stage, the microcapsules remain intact, exerting excellent flocculation to ensure settling effect; during the filtration and pressing stage, pressure triggers the disintegration of the filter aid microcapsules, and the encapsulated liquid carbon dioxide rapidly transforms into gaseous carbon dioxide, bursting open the dewatering channels and forming a large number of radial, irreversible microcracks and channel networks. Further, the pressing force efficiently squeezes out water along these newly formed cracks, removing residual water and achieving deep dewatering.

The utility model discloses a nozzle assembly for carbon dioxide snow cleaning, which comprises a spray seat, a carbon dioxide inlet connecting hole, an auxiliary gas inlet hole and a spray connecting hole are arranged on the spray seat, and a first channel and a second channel are further arranged in the spray seat; a carbon dioxide inlet joint is detachably connected with the carbon dioxide inlet connecting hole; a nozzle is detachably connected with the spray connecting hole at one end, and a spray hole is arranged at the other end of the nozzle; a core pipe is arranged in the first channel and the spray channel, and an auxiliary gas ejection gap is arranged between the core pipe and the inner wall of the spray hole. Liquid carbon dioxide enters from the carbon dioxide inlet joint and is converted into carbon dioxide snow particles in the carbon dioxide conversion channel in the core pipe, which are sprayed out; the auxiliary gas flows from the outside of the core pipe to the spray channel of the nozzle, and the carbon dioxide snow particles sprayed out by the core pipe are shot at the surface of the object to be cleaned by the auxiliary gas. The nozzle assembly has a simple structure and is easy to process, assemble, use and maintain.