20 results about "CARBON DIOXIDE/OXYGEN" patented technology

A catalyst regeneration gas loop is operated in a heat exchanger decoking mode. A regeneration gas is diverted away from a burn zone of the catalyst regeneration gas loop and to a heat exchanger, where coke deposits are disposed on a surface of the heat exchanger. The regeneration gas is prevented from flowing to an oxychlorination / calcination zone of the catalyst regeneration gas loop. Within the heat exchanger, the coke deposits are combusted with oxygen of the regeneration gas, thereby removing the coke deposits from the surface of the heat exchanger and producing carbon dioxide. Oxygen is replenished to the regeneration gas. The regeneration gas is recycled to the heat exchanger.

The present disclosure provides a lithium supplementing diaphragm for a lithium ion battery, a lithium ion battery, and a preparation method, and belongs to the field of batteries. The lithium supplementing diaphragm comprises a diaphragm base, a pre-lithium layer, a first protective layer, and a second protective layer. The pre-lithium layer is located on one side of the diaphragm base, and the first protective layer is located on the side of the pre-lithium layer away from the diaphragm base. The second protective layer is arranged on the first surface of the diaphragm base. The material of the second protective layer comprises a polymer and an ester compound. The polymer is insoluble in the electrolyte of the lithium ion battery. The ester compound is soluble in the electrolyte of the lithium ion battery. The second protective layer of the lithium supplementing diaphragm of the present disclosure is an organic material layer, and the preparation method does not need to be carried out in a vacuum, thereby being low in cost. The first protective layer and the second protective layer isolate the lithium metal in the pre-lithium layer from water, carbon dioxide, oxygen, nitrogen, and the like in the air during the assembly process, thereby reducing the consumption of lithium in the pre-lithium layer and improving the utilization rate of lithium. The technical problems of the prior art, such as high lithium consumption of the lithium supplementing diaphragm and complex preparation method, are solved.

The invention relates to the technical field of iron and steel smelting, and provides a method and a system for preparing gas-based shaft furnace reducing gas from converter gas, the method comprises the following steps: respectively pretreating converter gas generated by a converter and top gas generated by a shaft furnace to recover waste heat in the gas and remove impurities in the gas; and introducing the pretreated converter gas, the pretreated top gas, carbon dioxide, oxygen and natural gas into a reforming furnace for catalytic reforming to generate reducing gas, and introducing the reducing gas into the shaft furnace for smelting the direct reduction iron. The method can solve the problem that the current converter gas resource recovery effect is relatively low, utilizes the sensible heat and reducing capacity of the converter gas, combines a catalytic reforming technology, catalyzes and reforms the converter gas, the top gas and other gases into the reducing gas, reduces the preparation cost of the gas-based shaft furnace reducing gas, and realizes efficient utilization of resources.

The present application relates to the technical field of CO2 capture and utilization, in particular to an electrochemical method and system coupling carbon capture liquid regeneration and CO2 separation and utilization. The method steps are as follows: step one: ion membrane electrolysis treatment is carried out on the carbon capture absorption liquid after absorbing carbon dioxide; step two: the mixed gas generated in step one is introduced into the cathode of a fuel cell, and hydrogen is introduced into the anode of the fuel cell; step three: the carbon dioxide obtained by purification in step two is introduced into the cathode of electrolytic cell II, and the electric energy generated by the fuel cell in step two is used for electrolysis treatment of electrolytic cell II, electrochemical reduction is carried out on the purified carbon dioxide, and the reduced product is obtained. The present application couples three electrochemical devices, realizes the regeneration of carbon capture absorption liquid, the separation of carbon dioxide / oxygen mixed gas and the reduction of carbon dioxide in turn, has the advantages of low energy consumption and less secondary pollution, and can realize the capture, separation and green and effective utilization of carbon dioxide at the same time.

Disclosed are exemplary embodiments of environmental monitoring devices for monitoring one or more environmental conditions (e.g., temperature, humidity, carbon dioxide, oxygen, pressure, etc.) of storage units, such as storage units for vaccines, medications, and other climate sensitive products, etc. Also disclosed are exemplary methods of selectively configuring an environmental monitoring device for wireless communication by selectively connecting a communication module, from a plurality of different wireless communication modules, with an expansion port / connector of a printed circuit board of the environmental monitoring device. Further disclosed are exemplary methods of copying a configuration of a first environmental monitoring device to at least one or more other more environmental monitoring devices over a wireless communication link.

The application discloses a gallium oxide crystal growth device and method by the vertical Bridgman method. The gallium oxide crystal growth device comprises a furnace body, a heater and a lifting assembly. A graphite lining cavity assembly and a corundum cavity assembly are arranged in the furnace body to separate the furnace body into three independent cavities, i.e. a crystal growth cavity, a protection cavity and a heating cavity. A platinum-rhodium crucible is arranged in the crystal growth cavity. The heater is arranged in the heating cavity. The preset gas is introduced into the three cavities, and the pressure in the protection cavity is lower than that in the crystal growth cavity and the heating cavity. By controlling the atmosphere type and pressure difference of each cavity, the carbon dioxide and oxygen generated at high temperature in the crystal growth cavity are prevented from escaping outward to corrode the heater, and the reverse diffusion of the external impurity gas into the crystal growth cavity to pollute the gallium oxide crystal is avoided. The crystal growth device can protect the heater, prolong the service life of the device, and significantly improve the purity and quality of the crystal.

To provide a processing method with improved processing efficiency. [Solution] The treatment method involves irradiating a treatment gas containing carbon dioxide, having an oxygen concentration of 1000 ppm or less, and a water vapor concentration of 5 ppm to 30000 ppm with ultraviolet light having an emission wavelength of 227 nm or less, and treating the object by bringing the treatment gas irradiated with the ultraviolet light into contact with the object.

A process and plant for producing a purified CO2-rich gas or a synthesis gas from a feed gas comprising carbon dioxide (CO2), oxygen (O2) and one or more sulfur (S)-containing impurities, the process comprising: i) supplying a feed gas comprising CO2, SO2 and O2 to a S-scavenger zone, said S-scavenger zone being a S-scavenger reaction zone, a S-absorption zone, or a combination thereof, and withdrawing therefrom a S-depleted gas; ii) supplying a first hydrogen feed and at least a portion of the S-depleted gas, or a combination thereof, to an O2-hydrogenation reaction zone and withdrawing therefrom a S-and-O2-depleted gas as said purified O2-rich gas or said synthesis gas.

The invention provides a preparation method and application of low-agglomeration sulfide electrolyte microparticles, and relates to the technical field of solid-state batteries. Specifically, the preparation method provided by the invention comprises the following steps: feeding a sulfide solid electrolyte and a grinding medium to a high-frequency resonance grinding machine, introducing a gas phase, carrying out resonance grinding treatment, and then screening to obtain the low-agglomeration sulfide electrolyte micron particles, the gas phase comprises inert gas and reaction gas, and the reaction gas comprises at least one of carbon dioxide, oxygen and compressed air. According to the method, a high-frequency resonance grinding process is innovatively introduced, combined gas of reaction gas and shielding gas is matched, gas-solid reaction is continuously carried out in the powder refining process, a small amount of lithium carbonate coating layers are generated on the surfaces of particles, the brittleness of the surface of the sulfide electrolyte material is increased, meanwhile, the size of the powder can be effectively reduced, and powder agglomeration is avoided.

The invention belongs to the crossing field of high value-added utilization of biomass resources and fruit and vegetable fresh-keeping technologies, discloses fruit and vegetable modified atmosphere fresh-keeping paper and a preparation method thereof, and relates to fruit and vegetable modified atmosphere fresh-keeping paper prepared by taking a biomass material, namely chitin as a raw material. The fruit and vegetable modified atmosphere preservative paper is prepared from the following raw materials: raw paper, nano chitin and polyethylene glycol, the preparation method of the fruit and vegetable modified atmosphere preservative paper comprises the following steps: preparing a coating liquid, pretreating the coating liquid, and coating. The compatibility of chitin and polyethylene glycol to carbon dioxide gas molecules is utilized, the prepared modified atmosphere preservative paper has good carbon dioxide / oxygen selective permeability, and the gas permeation amount is regulated by regulating the thickness of the coating, so that the preservation of fruits and vegetables with different breathing intensities is realized. Meanwhile, the raw materials belong to biodegradable materials, so that no burden is brought to the environment. More importantly, the preparation method disclosed by the invention is relatively simple, is convenient for large-scale production and has wide market application potential.

Exemplary embodiments of environmental monitoring devices for monitoring one or more environmental conditions (e.g., temperature, humidity, carbon dioxide, oxygen, pressure, etc.) of storage units (e.g., vaccines, pharmaceuticals, and other climate sensitive products, etc.) are disclosed. An exemplary method of selectively configuring an environmental monitoring device for wireless communication is also disclosed by selectively connecting a communication module from a plurality of different wireless communication modules with an extended port / connector of a printed circuit board of the environmental monitoring device. Exemplary methods of copying a configuration of a first environmental monitoring device to at least one or more other more environmental monitoring devices over a wireless communication link are also disclosed.

The invention belongs to the technical field of sandstone type uranium ore mining, and particularly relates to a construction and in-situ leaching method for a water-resisting layer of a refractory sandstone type uranium ore with high carbonate minerals and lack of the water-resisting layer. Comprising the following steps that carbon dioxide is injected into the ore-bearing and water-bearing stratum to corrode carbonate minerals in the ore-bearing and water-bearing stratum, surrounding rock and an ore bed are subjected to underground water replacement, low-concentration sulfuric acid is injected for acidification, medium-concentration sulfuric acid is injected for leaching, and the self-consistent artificial water-resisting layer is constructed. According to the leaching process, the problems that carbon dioxide and oxygen are difficult to leach, acid consumption is high and blockage is serious in acid leaching are solved, an artificial water-resisting layer can be naturally formed in the mining process, and the problems faced by mineral deposit development are solved. The method can be used for developing ore deposits with high carbonate content, incapability of exploiting carbon dioxide and oxygen and lack of water-resisting layers.

A catalyst regeneration gas loop is operated in a heat exchanger decoking mode. A regeneration gas is diverted away from a burn zone of the catalyst regeneration gas loop and to a heat exchanger, where coke deposits are disposed on a surface of the heat exchanger. The regeneration gas is prevented from flowing to an oxychlorination / calcination zone of the catalyst regeneration gas loop. Within the heat exchanger, the coke deposits are combusted with oxygen of the regeneration gas, thereby removing the coke deposits from the surface of the heat exchanger and producing carbon dioxide. Oxygen is replenished to the regeneration gas. The regeneration gas is recycled to the heat exchanger.

The invention discloses a supercritical carbon dioxide and electric in-situ leaching method and system for sandstone type uranium ore, and relates to the field of uranium ore mining. The invention relates to a supercritical carbon dioxide and electric in-situ leaching method for sandstone type uranium ore. The method comprises the following steps: perforating a liquid injection well and an extraction well and acquiring geologic condition parameters of in-situ immersion hydrology; pressurizing and heating carbon dioxide to form supercritical carbon dioxide, mixing the supercritical carbon dioxide with in-situ immersion liquid, and injecting into a liquid injection well; microwaves are emitted into the liquid injection well and the extraction well to heat the surrounding rock; carbon dioxide, oxygen and filtered underground water are prepared into treating fluid suitable for the target stratum, and the treating fluid is injected into the liquid injection well at the preset temperature and pressure; respectively electrifying the liquid injection well and the extraction well to generate electric field directional migration and uranium element enrichment for preset time; and the ore leaching liquid in the extraction well is extracted, and the third to sixth steps are repeated. According to the supercritical carbon dioxide and electric in-situ leaching method and system for the sandstone type uranium ore, microwave heating of leaching liquid is combined with external electric field enhanced migration, the leaching time of uranium ions is shortened, and the extraction efficiency is improved.

Processes include treating natural organic materials from diverse waste sources using nitric acid (HNO3) as the primary chemical under pressure conditions. The pressurizing medium includes air, NOx, N2, CO2, O2, O3, and NH3 and their mixtures under pressure between about 10 psi and about 750 psi, at a temperature ranging from about 25°C to about 100°C and for a duration ranging from about 0.1 hours to about 72 hours. The resulting fibers and effluent can be used to make cellulose-based farming products, such as biogel growing media, soilless substrate binding agents, water and nutrient retention agents, and liquid fertilizers.

The invention belongs to the technical field of preservation of agricultural products, and discloses a biological film coating agent, a preparation method and application of the biological film coating agent in preservation of poultry eggs. According to the biological film coating agent, the rice bran oil and the soluble soybean polysaccharide serve as film forming matrixes, the raw materials further comprise the walnut shell extract obtained through deep eutectic solvent extraction, the antioxidant, the preservative and the emulsifier, and the film coating agent has excellent film forming performance through the synergistic effect of all the raw material components; a compact protective film with relatively good mechanical strength can be formed, and the protective film has good antibacterial performance and oxidation resistance. The biological film coating agent is applied to preservation of poultry eggs, can effectively seal pores with the diameter of 1-10 microns on the surfaces of eggshells and prevent macromolecular bacteria from invading, but does not influence normal exchange of metabolic micromolecular substances such as carbon dioxide and oxygen between contents of the poultry eggs and the outside, so that the quality change of the poultry eggs in the storage period can be effectively delayed, and the shelf life of the poultry eggs is prolonged. The shelf life of the poultry eggs is prolonged.

This invention discloses a CMC zein@MOF aloe vera self-regulating antibacterial preservation film, its method, and its application, belonging to the technical field of food packaging, self-regulating, and antibacterial preservation films. This composite preservation film uses CMC and zein as the core matrix (mass ratio 4:1), and HKUST-1 nanoparticles (0.2% of the total mass of the core matrix) and aloe vera gel (6% of the total mass of the core matrix) as functional components. Through the synergistic effect of multiple components, it achieves triple preservation effects of physical barrier, active antibacterial activity, and ultraviolet shielding. Its preparation method includes HKUST-1 nanoparticle preparation, aloe vera gel extraction, core matrix solution preparation, film-forming solution preparation, and film drying. The process is simple, cost-controllable, and suitable for large-scale production. The composite film prepared by this invention has a tensile strength of 68.59 MPa, an antibacterial rate of nearly 100% against Escherichia coli and Staphylococcus aureus, a carbon dioxide / oxygen selective permeability of 8.04 g·kg·mmol / (m²·h), excellent biocompatibility, and a soil degradation rate of 54.38% after 60 days. It is mainly used for the preservation of high-moisture fruits such as strawberries, and can extend the shelf life of strawberries to more than 6 days at room temperature of 20-25℃. It effectively solves the problems of existing bio-based films having single function, poor preservation effect, and environmental non-environmental impact, and provides a green and efficient alternative to food preservation packaging, with broad prospects for industrial application.

The present invention discloses a box-changing mechanism for a sprout growing device, comprising: a first supporting mechanism for lifting or releasing any incubation box or cover; and a two-axis drive mechanism for driving the first supporting mechanism to move horizontally or vertically. When the concentrations of carbon dioxide, oxygen, and ethylene within the incubation box become uncontrolled and exceed currently predetermined concentrations, the incubation box can be moved to release the gases within each incubation box, while simultaneously displacing the gases up and down, thereby resolving temperature differences within the stacked incubation boxes and restoring the gases within each incubation box to atmospheric conditions.

The invention belongs to the technical field of liquefied natural gas analysis and detection, and discloses a gas chromatographic analysis method of LNG (liquefied natural gas), which comprises the following steps: taking a gasified sample from a storage tank emptying port of an LNG receiving station or an LNG transportation tank car as sample gas; a gas detection system of the gas chromatograph comprises three valves and four columns, a first capillary column is used for pre-separating sample gas, a second capillary column is used for separating out mixed components in the sample gas, a third capillary column is used for separating four single components, namely carbon dioxide, oxygen, argon and nitrogen, in the mixed components, and the four single components enter a TCD detector for detection; and the fourth capillary column is used for separating hydrocarbon components in the sample gas and detecting the hydrocarbon components in the FID detector. According to the invention, by selecting a proper chromatographic column and changing a sample valve switching system of the gas chromatograph, the complete separation of oxygen, argon and nitrogen components in LNG is finally realized, the gas analysis precision and the detection efficiency are greatly improved, and a solution is provided for standardizing the market order.

The invention relates to a method and a device for measuring metabolic parameters and functional residual capacity 14, which is connected to a ventilator 15. To measure the CO2 and O2 concentration, the device takes a sample from the patient's breathing circuit and, in parallel, measures the gas flow rate in the patient's circuit. The respiratory gas flow rate is measured without delay. The oxygen and carbon dioxide concentration data differ in time by the transport delay of the sample supply from the patient circuit to the CO2 and O2 sensors. The processor measures the transport delays T1 and T2 at characteristic points and compensates for them. Time-synchronized CO2 and O2 concentration data are integrated with the flow rate, and the volumetric amounts of CO2, O2, and N2 are calculated.Based on this data, metabolic parameters (REE, RQ), volumetric capnometric function, and / or functional residual capacity (FRC) are calculated using the nitrogen leaching method. The CO2 data are also used to detect artifacts and exclude measurement errors, as well as to exclude the CO2 volume from the leached nitrogen.