13results about How to "Improve storage performance" patented technology

The invention discloses a system and a method for producing and storing solid hydrogen at low temperature by using a porous medium, the system comprises a porous medium storage unit, a hydrogen compressor, a refrigerating system, a control system and a hydrogen supply and recovery system, and a crystal coating of an HCP or an FCC is constructed by using the pore surface of the porous medium; hydrogen is injected into a porous medium material with a high specific surface area and good adsorption performance under high pressure, the pressure is controlled to be 10-1000 Mpa, the temperature of the hydrogen is reduced to-75 DEG C to-240 DEG C, crystallization and solidification of the hydrogen on the surface of the porous medium are achieved under the low-temperature and high-pressure conditions, a control system monitors and adjusts parameters such as the temperature and the pressure in the system in real time, and the hydrogen can be recycled. The safety and reliability of the hydrogen storage process are ensured, when hydrogen needs to be released, the control system enables the hydrogen to be released from the porous medium in a temperature rise or pressure reduction mode, and the hydrogen is recovered and utilized through the hydrogen supply and recovery system.

The marine ship seawater type carbon capture and storage method and device are suitable for fossil energy ocean facilities such as ocean ships (including ocean platforms), and carbon emission is reduced through ocean natural carbon sink resources. According to the scheme, only sea water is used for washing marine ship fuel oil / gas engine tail gas for carbon capture, then washing sea water dissolved with carbon dioxide is injected into ocean water under the condition that indexes such as the pH value are controlled to conform to the international ocean convention and environmental regulations, hydrocarbon ion mode ocean permanent carbon sequestration is implemented, and the marine permanent carbon sequestration effect is achieved. Therefore, a technical solution which not only can fulfill the Paris agreement but also can keep the economic and green congenital advantages of the shipping industry is provided for the international shipping industry of which the carbon emission is located in the sixth world.

The heat energy utilization and carbon sequestration system comprises a water injection well, a drainage well and a water injection device, the water injection well and the drainage well are communicated at the well bottom through a horizontal section, and the horizontal section is located in an underlying rock layer of a coal seam; the well bottom of the operation well is located in the coal seam, the fracturing section is communicated with the operation well, the fracturing section is located in an overlying strata of the coal seam, and the end, away from the operation well, of the gasification channel is located in an underlying strata and faces the horizontal section; the device further comprises a primary combustion assembly, a secondary combustion assembly, a sealing assembly and an oxygen supply assembly. The invention is used for solving the problems of insufficient carbon solidification, low combustion efficiency and low heat utilization rate in the carbon sequestration technology in the prior art, and realizes the purposes of more sufficiently sequestering underground carbon elements, improving the combustion efficiency and better utilizing the combustion heat energy.

A method for strengthening methane in-situ combustion fracturing, liquid carbon dioxide is pressurized and heated to form supercritical carbon dioxide, which is then sent into the fracturing channel to form a complex fracture network around the fracturing channel; mixed fracturing fluid formed by mixing supercritical carbon dioxide and fly ash is injected into the well bottom; combustion-supporting agent is injected into the wellbore and mixed with the mixed fracturing fluid at the well bottom to enter the complex fracture network together, so that a multiphase mixed fluid is formed in the complex fracture network; the annulus valve is closed to promote mineralization reaction of supercritical carbon dioxide and fly ash under the temperature and pressure conditions of the reservoir, and to form high-strength minerals; the mineralization reaction is used to promote the desorption of methane in the reservoir and into the complex fracture network, so that methane-combustion-supporting agent mixed gas is formed in the complex fracture network; the combustion process is used to promote the dust cloud formed by the mixing of fly ash and gas in the complex fracture network, to strengthen the effect of methane in-situ combustion; and the fracturing reconstruction of all layers is completed. The fracturing effect of the method is ideal.

In order to overcome the problems in existing lithium ion batteries having high compactness and high-specific-surface-area negative electrodes of serious side reactions of electrolytes and high gas production, the present invention provides a lithium ion battery, comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte. The negative electrode comprises a negative electrode material layer, the compaction density of the negative electrode material layer is greater than or equal to 1.4 g / cm3, and the negative electrode material layer comprises a negative electrode active material, and the non-aqueous electrolyte comprises a solvent, an electrolyte salt, a vinylene carbonate, a fluoroethylene carbonate, and an unsaturated phosphate represented by structural formula 1, and the electrolyte salt comprises LiPF6 and LiFSI. The lithium ion battery provided by the present invention has good cycle performance, high and low temperature storage performance, and lithium precipitation resistance.

The invention provides a method for detecting heavy metals in soil, and relates to the field of heavy metal detection. The method for detecting the heavy metals in the soil comprises the following steps: preparing a composite detection electrode, establishing a standard curve, and detecting a sample. The preparation of the composite detection electrode comprises the following steps: preparation of cerium-doped nickel-based metal cluster composite graphene, functional modification and electrode modification. The method for detecting the heavy metals in the soil aims at hexavalent chromium in the soil, does not need to depend on a large precise instrument, is high in detection sensitivity, strong in anti-interference capability, good in stability, simple and convenient to operate and rapid in detection, and can meet the timeliness requirement of rapid screening or emergency monitoring of large-batch samples.

The invention provides carbonized aggregate, a carbonized product with high carbonization depth and a preparation method of the carbonized aggregate, and belongs to the technical field of carbon sequestration building materials.The preparation method comprises the following steps that solid waste raw materials, cement, silica fume, a thickening agent, a water reducing agent and water are evenly mixed and subjected to pouring forming, and a green body is obtained; and drying the green body until the water content is 13-20%, and carbonizing and curing to obtain the high-connectivity artificial carbonized aggregate. And stacking a plurality of high-connectivity artificial carbonized aggregates in a mold in advance, pouring the slurry into the mold, maintaining at 25 DEG C for 24 hours, demolding, carrying out microwave pretreatment, and then carrying out carbonization maintenance to obtain the carbonized product. According to the method for constructing the continuous carbon dioxide transportation network by using the high-connectivity artificial carbonized aggregate and the preset aggregate technology, the light high-strength carbonized product with the high carbonization depth is prepared, the compressive strength can reach 39.23 MPa after the carbonized product is carbonized for 1 day, the density is 1711 kg / m < 3 >, the carbonization degree is 43.27%, the carbonization uniformity depth is 50 mm, the carbon fixation amount is 356.2 kg / m < 3 >, and the pre-curing time is 4 h.

The invention belongs to the technical field of biomedicine, and particularly relates to a DNA vaccine of SARS-CoV-2 as well as a construction method and application of the DNA vaccine. According to the present invention, the Wuhan-Hu-1 strain RBD protein is adopted as the design target of the candidate DNA vaccine, and the B cell epitope prediction is performed; the recombinant DNA vaccine pcDNA3.1-LREP1 and pcDNA3.1-LREP2 is obtained by selecting a B epitope peptide with a proper length by combining with a binding site of a neutralizing antibody in an RBD region, connecting with minimum active sites' LMRK 'and' LRMK 'of cathepsin S to obtain LREP1 and LREP2, and inserting nucleotide sequences of the LREP1 and the LREP2 into a pcDNA3.1 eukaryotic expression vector. According to the present invention, the two DNA vaccines such as the pcDNA3.1-LREP1 and the pcDNA3.1-LREP2 prepared by the present invention have good immunogenicity, can induce the generation of the specific IgG antibody of the anti-Wuhan-Hu-1 virus strain S protein in the mouse, and can effectively inhibit the SARS-CoV-2Wuhan-Hu-1 strain S protein mediated cell-cell fusion, and the effect of the pcDNA3.1-LREP2 is superior to the effect of the pcDNA3.1-LREP2.

The utility model discloses an anti-collision semiconductor diode storage mechanism which comprises a box body, a box cover is hinged to one side of the box body, a rubber pad adheres to the inner wall of the bottom of the box body, a storage box adheres to the upper surface of the rubber pad, a plurality of containing cavities are formed in the top of the storage box and are evenly distributed, and the bottom of the box body is provided with an opening. The containing cavity is filled with filler wrapping the diodes, and a fixing mechanism for locking the box cover after the box cover is closed is arranged on one side of the box body. According to the utility model, not only can the diodes be not easy to move and the positions of the diodes be kept through the arrangement of the fillers, and the protection effect of the device be improved, but also the fillers can be prevented from flowing out of the placing cavity in the transportation process through the arrangement of the fixing mechanism, so that the sealing and storage effect of the placing box is improved; and through the arrangement of the elastic protrusions, the filler can be limited, the filler is prevented from coming out of the containing cavity, and the protection effect of the device is further improved.

The invention relates to a laser welding sealing structure of an ultrathin metal foil and a metal tube shell and a welding method, and belongs to the technical field of initiating explosive device output end sealing connection. Comprising a tube shell, a foil and a compression ring, wherein the tube shell is of a cylinder structure which is vertically arranged in the axial direction; a through hole is formed in the axis of the tube shell, and a cylindrical groove is formed in the top of the through hole; the foil is of a circular plate-shaped structure; the foil is concentrically arranged in the groove of the tube shell; the pressing ring is of an annular structure. The pressing ring is placed on the upper surface of the foil; the welding method comprises the steps that S1, the foil is placed in the groove of the tube shell; s2, a pressing ring is placed on the foil, and the foil is pressed; s3, preliminarily welding a joint between the inner wall of the tube shell and the outer edge of the pressing ring; s4, a joint between the inner wall of the tube shell and the outer edge of the pressing ring is completely welded; the problem of ablation during laser welding sealing of the ultrathin metal foil and the tube shell is solved, and laser welding sealing connection of the ultrathin foil at the output end of the initiating explosive device is achieved.

The invention particularly relates to a high-strength waterproof composite paper tray and a production method thereof, the high-strength waterproof composite paper tray comprises a tray main body, the tray main body is made of a paper cardboard, and the paper cardboard is any one of a corrugated board, a honeycomb paperboard and a sand pipe hardboard. Surface paper adheres to the surface of the paper cardboard through an adhesive, the surface of the surface paper is coated with waterproof paint, and a waterproof coating is formed on the surface of the surface paper after the waterproof paint is subjected to calendering treatment. The paper cardboard is adopted to replace a traditional wood board and plastic, the requirements for high compressive strength and stability of the tray are met, meanwhile, the waterproof coating is arranged on the surface of the paper cardboard, the waterproofness and weather resistance of the paper tray are remarkably improved, and the paper tray can adapt to use under different environment temperature and humidity, is not prone to damage and can be recycled, and the cost is reduced. And the production cost is effectively reduced.

The present application relates to propellant technical field, specifically disclose a kind of quick response hydrocarbon propellant and its preparation method, by mass percentage includes composite hydrocarbon fuel: 26~40%;Oxidant: 30~35%;Metal fuel: 8~15%;Binder: 18~23%;Process aid: 0.1~1.6%;Binder is the combination of butadiene rubber and polybutadiene.This hydrocarbon propellant uses butadiene rubber with melting temperature of 80 DEG C as binder matrix and uses liquid PB with molecular weight of 2000~2500 as auxiliary binder, ensure propellant mixing process performance, improve the bonding performance between hydrocarbon fuel system and binder, improve the mechanical properties of propellant;And the present application uses non-polyurethane binder system, solves the problem that polyurethane curing system is cured by environmental humidity, and propellant strength is less affected by environment.

The present application relates to the technical field of paint, in particular to a hydrolytic linear self-polishing antifouling paint and a preparation method thereof.The linear self-polishing resin system is obtained by compounding ion exchange resin, silane ester resin and additive A in a certain proportion, and is applied to the antifouling paint, so that not only the linear self-polishing antifouling paint can be obtained, but also the unstable hydrolysis of the combination of the ion exchange resin and the silane ester resin during the storage process in the storage tank can be prevented.The linear self-polishing property provided by the present application can greatly prolong the antifouling period of the paint, reduce the roughness of the coating surface and reduce fuel consumption.