147results about How to "Improve reducibility" patented technology

The invention belongs to the technical field of energy conservation and environmental protection, and discloses a cement kiln system for coupling oxygen enrichment and staged combustion by using alternative fuel in a large proportion, which comprises a circulating fluidized bed system, a decomposing furnace, a rotary kiln and a grate cooler, the kiln tail of the rotary kiln is connected with the bottom of the decomposing furnace, a bottom gasified gas spraying pipe is arranged between a kiln tail smoke chamber of the cement kiln and a coal spraying pipe of the conical part, and an upper gasified gas spraying pipe is arranged on the upper portion of the middle section of the decomposing furnace; the bottom gasified gas spray pipe and the upper gasified gas spray pipe are both connected to a gasified gas outlet of the circulating fluidized bed system; and a semi-gasified gas spray pipe is arranged at the upper part of the lower section of the decomposing furnace and is connected to a semi-gasified gas outlet of the circulating fluidized bed system. The disposal amount of the alternative fuel can replace 50% of pulverized coal in the decomposing furnace, and the requirement for using the alternative fuel in a large proportion is met.

The invention relates to the technical field of sewage treatment, in particular to a method and device for purifying printing and dyeing wastewater based on TAPB-DMTA COF Fenton-like synergistic bacteria and algae. According to the specific technical scheme, the printing and dyeing wastewater purification method comprises the following steps that 1, printing and dyeing wastewater is introduced into a photocatalytic Fenton-like reactor, porosity-modified photocatalysts TAPB-DMTA COF and H2O2 are added into the photocatalytic Fenton-like reactor, a baffle plate is arranged in the photocatalytic Fenton-like reactor, the angle of the baffle plate is 30-45 degrees, and the angle of the baffle plate is 30-45 degrees; a first illumination module is arranged outside the photocatalytic Fenton-like reactor; and (2) introducing the wastewater treated in the step (1) into an algal-bacterial symbiotic SNAD reactor, and adding a photocatalyst and a multi-walled carbon nanotube into the algal-bacterial symbiotic SNAD reactor. The photocatalytic Fenton-like reactor disclosed by the invention takes porosity modified TAPB-DMTA COF as a photocatalyst aiming at dyestuff which is difficult to degrade, so that complete degradation of the dyestuff is realized. For ammonia nitrogen pollutants, the bacterial-algae symbiotic SNAD reactor cancels traditional mechanical aeration, the microbial extracellular electron acquisition capability is optimized through a biological enhancer, and efficient and green removal of total nitrogen can be realized without adding an organic carbon source.

The invention relates to a water-based photoresist stripping liquid for a display panel as well as a preparation method and application of the water-based photoresist stripping liquid. The water-based photoresist stripping liquid for the display panel comprises the following components in parts by weight, 0.1 to 0.5 part of a composite functional agent; 15 to 25 parts of organic amine; 10-20 parts of a polar solvent; 1-5 parts of a metal resist; and 30-50 parts of ultrapure water. An electron-rich water-soluble compound in the composite functional agent and an oxidation group of graphene oxide react through static electricity or hydrogen bonds to form a stable network structure, so that molecules are connected more tightly in a solution, the overall stability of the aqueous photoresist stripping liquid is better maintained, and the stripping efficiency of the aqueous photoresist stripping liquid is improved. The effects of reducing the volatilization of other components in the water-based photoresist stripping liquid and reducing the operation risk in the manufacturing process are achieved, and the service life of the water-based stripping liquid is prolonged.

The present invention belongs to the technical field of iron ore sintering, and specifically relates to an iron ore sintering method that can simultaneously improve the reducibility of sintered ore and reduce nitrogen oxide emissions. The method includes batching, primary mixing, secondary mixing, distribution, ignition, and sintering steps, wherein low-carbon alcohol is added in the secondary mixing step. The inventor has found through research that adding an appropriate amount of low-carbon alcohol to the secondary mixing can adjust the sintering temperature of the sintering process and extend the sintering time, which can not only improve the reducibility of the sintered ore, but also significantly reduce the emission of nitrogen oxides. Specifically, the ferrous oxide content in the sintered ore can be reduced from 11% to 9.6% compared with the blank test, and the reducibility of the sintered ore is significantly improved; at the same time, compared with the blank test, the total concentrations of nitrogen monoxide and nitrogen oxides in the sintering flue gas are reduced.

The invention relates to a CO2 catalytic conversion catalyst and a preparation method and application thereof.The preparation method of the catalyst comprises the steps that a silicon source, an aluminum source and an inorganic acid aqueous solution are weighed to form white sol, then centrifugation, washing and drying are conducted, white silicon-aluminum composite oxide powder is obtained, a binder is added, rolling ball forming is conducted, and a silicon-aluminum composite oxide carrier precursor is obtained; and weighing the first active component precursor, the second active component precursor and the auxiliary component precursor, loading the precursors on the silicon-aluminum composite oxide carrier precursor in a dipping manner, drying, and roasting to obtain the CO2 catalytic conversion catalyst. Compared with the prior art, the catalyst provided by the invention has the advantages of high activity, high selectivity, high stability and the like in the CO2 reverse water gas shift reaction.

The invention discloses an electrochemical preparation method of a component-controllable indium-indium oxide nanosphere composite catalyst and CO2 reduction application of the component-controllable indium-indium oxide nanosphere composite catalyst. The component-controllable indium-indium oxide nanosphere composite catalyst is prepared from indium nitrate, urea, trisodium citrate, deionized water, absolute ethyl alcohol, a carbon paper electrode and Nafion. Different indium oxide nanosphere precursors are synthesized under the high-temperature and high-pressure reaction conditions of a one-step hydrothermal method, the precursors are placed in a muffle furnace to be subjected to high-temperature calcination to obtain indium oxide nanospheres, the obtained indium oxide nanospheres are subjected to electrode sheet preparation, and the indium-indium oxide nanosphere composite catalyst with controllable components is obtained through electrochemical reduction treatment. The composite material is applied to CO2 electrochemical reduction.

The invention belongs to the technical field of metal-organic framework functional materials, and particularly relates to a nickel-based metal-organic framework material, a plasmon nickel-based metal-organic framework composite material and a synthesis method and application of the nickel-based metal-organic framework material and the plasmon nickel-based metal-organic framework composite material. According to the invention, chloroauric acid is directly reduced into gold nanoparticles by using the reducibility of the nickel-based metal organic framework material, and the gold nanoparticles are loaded on the nickel-based metal organic framework material, so that uniform dispersion and firm loading of the gold nanoparticles on the nickel-based metal organic framework material are realized. The method has the advantages of simple synthesis method, convenience in operation and no need of additional reducing agent, is easy for large-scale preparation, and has better market application value and development prospect. The prepared plasmon nickel-based metal organic framework composite material is used as a photoelectrocatalytic reaction catalyst to be applied to photoelectrocatalytic reduction of nitrate to prepare ammonia, and the catalytic performance is excellent.

The invention discloses a grate-rotary kiln pellet process biomass-hydrogen-based fuel gas composite heat supply method, which comprises the following operation steps A, B and C in a grate-rotary kiln pellet production process: A: mixing biomass charcoal and a pellet material for pelletizing; b, the biomass solid fuel and the hydrogen-based fuel gas are injected into the rotary kiln at the same time; and C, fuel gas and / or air are / is injected to the joint of the chain grate machine and the rotary kiln head so as to regulate and control the oxygen content and temperature of the flue gas of the second preheating section. According to the method, under the condition that normal production of the pellets is not affected, due to the fact that a renewable, clean and low-carbon fuel structure is fully adopted, the number of CO2 and gas pollutants generated by combustion of fossil fuel is remarkably reduced.

The invention discloses an amido-functionalized resin-based nano zero-valent ruthenium-loaded composite material, a preparation method thereof and application of the amido-functionalized resin-based nano zero-valent ruthenium-loaded composite material in catalytic reduction of bromate in a water body, a matrix of the composite material is polystyrene resin with a propane diamine group, the matrix is spherical, the particle size distribution is 0.20-0.80 mm, and the pore size distribution is 1-50 nm; holes are uniformly distributed in the surface of the matrix, zero-valent ruthenium nanoparticles are uniformly distributed in the holes, the particle size of the zero-valent ruthenium nanoparticles is 2.0-30 nm, and the zero-valent ruthenium loading rate of the resin-based composite material is 0.5-5%. According to the invention, the resin-based zero-valent ruthenium composite material is used for reducing and removing bromate in the water body, and the composite material utilizes zero-valent ruthenium to enhance the reduction capability and selectivity of the reaction on the basis that a propylene diamine functional group has certain adsorption and reduction of bromate; tests show that when the pH value of a water body is 2.0-10.0, most bromate can be converted into bromide.

The invention relates to the technical field of concrete, and discloses high-strength concrete and a preparation method thereof. The concrete comprises the following components: 800 to 850 parts of cement, 150 to 160 parts of glass beads, 100 to 120 parts of mineral powder, 80 to 100 parts of silica fume, 900 to 950 parts of fine aggregate, 8 to 10 parts of a water reducing agent, 10 to 15 parts of chitosan, 20 to 25 parts of acrylamide, 1 to 2 parts of an initiator, 5 to 6 parts of a coupling agent, 1 to 2 parts of a cross-linking agent, 1 to 2 parts of nano silver oxide, 200 to 210 parts of water and 50 to 60 parts of an acetic acid solution. Chitosan and acrylamide are copolymerized to obtain a polyhydroxy copolymer with a three-dimensional network structure, so that the strength of the concrete is improved; the nano silver oxide is loaded on the three-dimensional network copolymer, the nano silver oxide has excellent antibacterial performance, polyhydroxy on the copolymer structure has good oxidability and reducibility, and the antibacterial ability of the silver oxide is synergistically promoted. The concrete prepared by the preparation method disclosed by the invention keeps high strength while having excellent antibacterial ability.

The invention discloses a preparation method of a zero-valent iron reduction material with micro-nano size and water stability, and belongs to the field of underground water pollutant degradation materials. The method comprises the following steps: 1) uniformly mixing micron-sized zero-valent iron powder and hexadecyl trimethoxy silane, and carrying out mechanical ball milling; and 2) cleaning the material with a cleaning agent, and drying to obtain the zero-valent iron reduction material with micro-nano size and water stability. According to the preparation method, a mechanical ball milling method and a hexadecyl trimethoxy silane surface modification method are utilized to cooperate, so that micro-nano size and surface hydrophobicity of the zero-valent iron are stabilized, agglomeration and passivation of the zero-valent iron in water are inhibited, and the reduction activity and water stability of the zero-valent iron material are improved; the reducing capacity of the material on pollutants such as halogenated hydrocarbon and heavy metal in water is remarkably improved, the material can be kept stable in water for a long time, the technical problems that the micro-nano zero-valent iron reducing material is prone to inactivation and difficult to store are solved, and waste of material resources can be reduced.

The invention discloses a photoelectric device, a preparation method of the photoelectric device and electronic equipment, the photoelectric device comprises an anode and a cathode which are oppositely arranged, an electronic function layer arranged between the cathode and a light-emitting layer, and an auxiliary layer arranged between the electronic function layer and the cathode, the material of the cathode comprises a first metal, and the material of the auxiliary layer comprises a second metal. The material of the auxiliary layer comprises second metal, the reducibility of the first metal is higher than that of the second metal, the performance stability and the storage stability of the photoelectric device can be improved, and the device efficiency and the device service life of the photoelectric device can be improved; when the photoelectric device or the photoelectric device prepared by the preparation method of the photoelectric device is applied to the electronic equipment, the photoelectric property and the service life of the electronic equipment can be improved.

The invention provides a treatment method of nickel-cobalt hydroxide, which comprises the following steps of: leaching the nickel-cobalt hydroxide by using a leaching agent containing ionic liquid and chloride, and filtering to obtain leachate and leaching residues; adding iron powder or manganese powder into the leachate to remove copper, and filtering to obtain copper sponge and copper-removed liquid; adding an alkaline regulator into the copper-removed liquid, and filtering to obtain iron and aluminum-removed liquid and iron and aluminum slag; carrying out counter-current extraction on the iron and aluminum removed liquid and P204 to obtain manganese-rich organic liquid and manganese extraction residual liquid; carrying out reverse extraction on the manganese-rich organic liquid with dilute sulfuric acid to obtain a manganese sulfate solution, wherein the manganese sulfate solution is used for preparing a ternary precursor or manganous-manganic oxide; carrying out countercurrent extraction on the manganese extraction raffinate and the co-extraction organic solvent to obtain a nickel-cobalt-loaded organic solvent and raffinate; carrying out reverse extraction on the nickel-cobalt-loaded organic solvent by dilute sulfuric acid to obtain a nickel-cobalt sulfate solution; the nickel-cobalt sulfate solution is used for preparing the ternary precursor after being deoiled. The nickel-cobalt hydroxide treatment method provided by the invention is low in auxiliary material consumption, low in treatment cost, green and environment-friendly.

The invention relates to the technical field of photovoltaic cells, and provides a laser processing device, a method for preparing a metal electrode and a photovoltaic cell. According to the laser processing system, remelting and solidification are carried out while selective metallization is carried out, the internal stress of the electrode is released while the adhesive force is increased, and the porosity can be effectively reduced; in addition, the technological process can be simplified, the problem that the secondary machining position is difficult to calibrate is solved, and the machining efficiency is improved. According to the method for preparing the metal electrode, the position of the copper electrode can be precisely machined, the problem of precision of current silk-screen printing is solved, damage to the amorphous silicon layer can be avoided, the prepared copper electrode has the large height-width ratio, and the light conversion efficiency can be effectively improved.

The present application relates to the technical field of soil remediation, and discloses a composite microbial inoculum for activating reverse conversion of oxidized iron in dry land soil and application thereof.The composite microbial inoculum comprises aerobic iron-reducing bacteria and phenazine electron shuttles.The present application mediates the aerobic iron-reducing process of the aerobic iron-reducing bacteria strain through the phenazine electron shuttles, significantly improves the electron transfer efficiency, enhances the iron-reducing capacity, and can efficiently generate high-activity weak-crystalline iron oxide under aerobic conditions, thereby breaking through the limitation of traditional iron reduction relying on anaerobic environment;by promoting the reverse conversion of high-crystalline oxidized iron to weak-crystalline oxidized iron, the mineral interface activity is improved, the fixation capacity for Cd, Pb, As and other multi-metals in dry land soil is significantly enhanced, the biological availability thereof is reduced, the biological toxicity and migration risk thereof are greatly weakened, the remediation process is stable, the risk of secondary pollution is low, and the present application has good application prospect and popularization value in the field of heavy metal contaminated soil remediation.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a preparation method of a light-driven magnesium-based composite hydrogen storage material, which comprises the following steps: mixing and grinding strontium titanate and sodium borohydride in a mortar; then, heating and calcining the mixture in a tubular furnace in an argon atmosphere, and carrying out surface modification treatment; then, washing the calcined product, and performing vacuum drying to obtain STO-450 particles with reconstructed surfaces; mgH2 and STO-450 particles are mixed through a high-energy ball milling method, the MgH2-Y wt.% STO-450 composite hydrogen storage material is prepared, and Y is the mass fraction of the STO-450 particles in the composite hydrogen storage material. The temperature rising rate of the prepared light-driven magnesium-based composite hydrogen storage material is greatly increased, efficient solar photo-thermal conversion is achieved, the energy utilization rate is high, and the dehydrogenation amount is increased by nearly two times compared with that of a common strontium titanate composite hydrogen storage material.

The invention discloses an anaerobic denitrifying bacterial agent as well as a preparation method and application thereof, and belongs to the technical field of water environment treatment. The anaerobic denitrifying bacterium agent is prepared from the following components in parts by weight: 15 to 30 parts of sterile water, 15 to 60 parts of normal saline, 5 to 10 parts of micro-capsule embedded anaerobic denitrifying bacteria, 5 to 20 parts of a porous composite modified carrier, 10 to 30 parts of a carbon source, 4 to 7 parts of nutrient elements, 2.5 to 4 parts of a buffering agent and 1 to 5 parts of a stabilizer, the micro-capsule embedded anaerobic denitrifying bacteria are obtained by embedding anaerobic denitrifying bacteria with an alginic acid gel solution and a calcium chloride solution; the porous composite modified carrier is obtained by crosslinking modified nano iron oxide, modified nano titanium dioxide, a functional polymer solution and glutaraldehyde. The anaerobic denitrifying bacterial agent provided by the invention can effectively improve the efficiency of treating nitrogen pollution of a water body.

The application discloses a preparation method of a photocatalyst for CO2 reduction and application thereof. The photocatalyst is prepared through the following steps: first, preparation of the photocatalyst bismuth oxysulfate; second, metal loading modification of the photocatalyst bismuth oxysulfate. Thiocyanic acid and bismuth nitrate are used as raw materials to synthesize the photocatalyst bismuth oxysulfate, and copper chloride or silver nitrate reagent is selected as a material for metal loading modification of the bismuth oxysulfate, and the selected materials are inexpensive and easy to purchase, and the economic cost is low. The photocatalyst prepared by the method has the advantages of high selectivity, can accelerate electron movement under light conditions, promotes CO2 reduction degradation, and has high stability, and is an ideal photocatalyst. Compared with existing photocatalyst materials, the material has high catalytic degradation reducibility and selectivity, high stability, and when used as a CO2 photocatalyst, can efficiently reduce and convert CO2 into multi-carbon products.

The invention discloses a method for identifying kitchen waste occluded objects and judging occlusion relations, constructs an occlusion data set of kitchen waste images, and marks the visible mask, complete mask, and category of each target object therein; first, uses the occlusion data set to train an instance segmentation model and a mask restoration model; the input of the instance segmentation model is the kitchen waste image, and the output is the category and visible mask of each target object; the input of the mask restoration model is the visible mask and the kitchen waste image output by the instance segmentation model, and the output is the complete mask; secondly, the kitchen waste image to be identified and judged is used to obtain the category, visible mask, and complete mask of each target object using the trained instance segmentation model and mask restoration model; finally, the visible mask and the complete mask are combined to judge whether each target object is occluded and the occlusion relationship. The invention performs instance segmentation and mask restoration on recyclable garbage, and can obtain object category, position, occlusion relationship and complete shape information.

The invention relates to steel slag treatment equipment and a steel slag treatment method. The steel slag treatment equipment comprises a machine table, a powder spraying tank, a connecting pipe, a rotary spraying gun, a rotary control device and a steel ladle, the powder spraying tank is arranged on the machine table and used for spraying reducing agent powder; the steel ladle is provided with a cavity used for containing steel slag. The rotary spray gun is arranged on the machine table; the rotary spray gun can rotate around the axis; the discharge end of the rotary spray gun is arranged in the cavity; the discharging end of the powder spraying tank is connected to the feeding end of the rotary spraying gun through a connecting pipe and used for spraying reducing agent powder into the cavity. The rotation control device is arranged on the rack and connected to the rotary spray gun so as to control rotation of the rotary spray gun. The steel slag treatment equipment can be used for recycling the steel slag, and the recovery rate of molten metal in the steel slag and the recycling rate of the steel slag can be increased.

An application method for adding waste slag ore in vanadium-titanium pellet production relates to the technical field of environmental protection, and is characterized in that a first test refers to research on influence of waste slag ore adding on pellet quality in a sintering cup laboratory, and a second test refers to an industrial test for adding waste slag ore in a shaft furnace. According to the application method for adding the waste slag ore in the vanadium-titanium pellet production, 1% of the waste slag ore is added in the shaft furnace finally, the waste slag ore contains 1.5% of vanadium, the vanadium input is increased, and the metallurgical performance of the pellets is improved by adding the waste slag ore (the return rate of the pellets is reduced by 0.03%; the reduction performance is improved by 13.45%, the expansion index is reduced by 2.8%, the softening and melting interval is increased by 18.5 DEG C, and the dripping temperature is increased by 9 DEG C), the improvement of the reduction performance, the reduction of the expansion index and the increase of the dripping temperature are all beneficial to the metallurgical performance of the pellets, meanwhile, the waste slag ore is increased in the shaft furnace, the vanadium input is increased, the pig iron raw material cost is reduced, and the molten iron cost is reduced by 0.54 yuan / ton.

The invention provides a method for preparing a nano silver solution, and belongs to the technical field of nano silver preparation. The method uses silver nitrate as a silver source, water as a reaction solvent, polyvinyl pyrrolidone as a first dispersant, and gum arabic as a second dispersant. After the silver source is preferentially encapsulated by the first dispersant, a mixed solution of a reducing agent and a second dispersant is poured at one time to prepare a nano silver solution. The invention adopts the synergistic effect of the first dispersant and the second dispersant to make the prepared nano silver particle size distribution more uniform, and can still remain stable after being placed for 30 days; by adjusting the pH value of the solution to be alkaline, it is ensured that the H ‑ The concentration of the reducing agent increases the reducing ability. This method has a rapid reaction, simple operation, no requirements for experimental conditions and equipment, etc., can be stably expanded to 25L, and the particle size does not change after long-term storage. It has highly stable dispersibility and is suitable for large-scale industrial production.

The application discloses a nuclide synthesis hot chamber convenient to clean and a cleaning method thereof, which comprises a synthesis chamber, an exhaust mechanism arranged on the top of the synthesis chamber, and a cleaning mechanism arranged on the inner side of the synthesis chamber. The synthesis chamber comprises a synthesis cavity, a partition plate arranged in the synthesis cavity, and an ultrasonic cleaner arranged at the bottom of the partition plate. The ultrasonic cleaner is arranged in a plurality of pieces and is fixedly connected to the bottom of the partition plate uniformly. A laser three-dimensional scanner is fixedly connected to the top of the synthesis cavity. The exhaust mechanism comprises a gas storage cavity, a main pipeline arranged on one side of the gas storage cavity, and a gas conveying assembly arranged in the gas storage cavity. The main pipeline is used for conveying the gas in the gas storage cavity to the synthesis chamber and exhausting the residual gas in the synthesis chamber. The cleaning mechanism is mainly used for conveying cleaning liquid to the synthesis chamber to clean the synthesis chamber. The combination of nitrogen and ultrasonic waves improves the cleaning degree of the synthesis chamber and reduces the residual toxic gas.

The invention relates to the technical field of traditional Chinese medicine compositions, in particular to a traditional Chinese medicine composition and a traditional Chinese medicine glasses frame. 10 to 20 parts of rhizoma acori graminei; 10 to 20 parts of polygala tenuifolia; 20 to 30 parts of menthol; 5-10 parts of clove; 10 to 15 parts of borneol; 10 to 20 parts of Chinese angelica; 10 to 20 parts of radix astragali seu hedysari; 5-10 parts of cassia oil; 10 to 20 parts of poria cocos; the traditional Chinese medicine composition fully embodies the compatibility principle of monarch, minister, assistant and guide. Ligusticum wallichii is used as monarch for promoting blood circulation to remove blood stasis; the rhizoma acori graminei and the polygala tenuifolia are used as minister Menthol, clove and borneol are used as assistants to enhance the drug effect; angelica sinensis and astragalus membranaceus are used as guide drugs to tonify qi and nourish blood. The combination not only can improve local symptoms, but also can regulate body functions on the whole, and embodies the thought of overall view and treatment based on syndrome differentiation of traditional Chinese medicine.

The present invention belongs to the technical field of sewage treatment, especially to an oxidation-reduction device and method for treating high-concentration toxic and harmful industrial sewage. In view of the poor contact effect between ozone and sewage at the bottom during oxidation, which results in the inability to effectively oxidize pollutants inside the sewage at the bottom, and thus is not conducive to subsequent reduction operations, the following scheme is proposed, including a mounting base, the top of which is fixedly connected to two support frames. The oxidation-reduction device and method for treating high-concentration toxic and harmful industrial sewage disclosed in the present invention have the function of increasing the sewage treatment effect. During the oxidation operation, the device can extract and lift the sewage at the bottom, and discharge it after lifting, so that the sewage at the bottom contacts with the ozone in the rising process, thereby increasing the contact effect between the sewage and the ozone during oxidation, thereby increasing the oxidation effect, and improving the subsequent reduction effect, and increasing the use effect of the device.

The application provides a Rubik's cube restoration method and a Rubik's cube restoration robot, and relates to the technical field of Rubik's cube restoration equipment. The method comprises the following steps: collecting images of each face of the Rubik's cube by using an image acquisition module, extracting color data of each color block in the Rubik's cube according to the images, wherein the color data comprises data of the color block in at least two color spaces; obtaining a target clustering result of the color data, obtaining the color of each color block in the Rubik's cube according to the sorting of the color space of the target clustering result; and restoring the Rubik's cube based on the color of each color block. The embodiment of the application can automatically collect images of each face of the Rubik's cube, quickly identify the color of each color block of the Rubik's cube through the clustering and sorting mapping mode, has high speed, low efficiency and good robustness, has high identification accuracy, effectively improves the Rubik's cube restoration effect and improves the user experience.

The application provides a five-degree-of-freedom virtual flight test device based on motion compensation, wherein a test model of the device can complete three-axis rotation motion with the help of a three-degree-of-freedom hinge, the test model and an abdominal support strut can move up and down along the axial direction of a three-pronged suspension support to complete the release of the heave degree of freedom, and the test model and the three-pronged suspension support can realize lateral undamped motion under the support of a pneumatic suspension bearing, so as to achieve the purpose of releasing the lateral translation degree of freedom. A parallel six-degree-of-freedom mechanism base at the bottom is responsible for motion compensation of the lateral translation, heave, roll and pitch degrees of freedom, and based on the above structure, the device can realize the five-degree-of-freedom coupled motion test capability except the forward and backward motion. The realization of the above functions has important significance for improving the restoration capability of the virtual flight test of a wind tunnel to the real dynamic characteristics of an aircraft model.

The application discloses a method for preparing direct reduced iron from iron-containing raw materials with near-zero carbon, and belongs to the technical field of steel metallurgy. The method comprises the following steps: uniformly mixing iron-containing raw materials, an organic-inorganic composite binder, biomass carbon and water, and then sequentially performing high-pressure forming and drying and solidification to obtain cold briquetting; and the cold briquetting is reduced by pure hydrogen to obtain direct reduced iron. The method can prepare cold briquetting suitable for the performance requirements of a shaft furnace for direct reduction at a relatively low temperature (<300 DEG C), and further prepares direct reduced iron by pure hydrogen reduction. The method has a short process flow, near-zero carbon emission, and provides a new technical route for the green and low-carbon transformation of the steel industry.

The present invention belongs to the field of photocatalytic composite materials, and specifically relates to a K-C3N4@Bi2WO6 multi-level heterogeneous material, a rapid synthesis method thereof, and its application in photocatalytic sterilization and degradation of organic pollutants. The K-C3N4@Bi2WO6 multi-level heterogeneous material provided by the present invention uses a two-dimensional porous layer structure K-C3N4 as a carrier to load zero-dimensional Bi2WO6 quantum dots. The heterogeneous material is controllably constructed by using ion exchange technology, and the K-C3N4 and Bi2WO6 are reacted in an in-situ calcination process. 6‑ x Br x Ion exchange spontaneously occurs in aqueous solution to generate KBr. At the same time, the unsaturated C atoms around the N defects on K-C3N4 and the dangling oxygen bonds on the surface of Bi2WO6 make the interface between the two close and increase the contact area, and provide a transmission channel for photogenerated electrons, greatly promoting the separation of photogenerated electron-hole pairs. This method has the advantages of being simple, fast, and effective in constructing heterogeneous materials. The obtained K-C3N4@Bi2WO6 multi-level heterogeneous material has excellent rapid low-temperature degradation and sterilization properties of organic pollutants.

The invention provides a preparation method of a rhodium-based electron medium and enzyme co-loaded COF photocatalyst, and provides a two-in-one synthesis method, by means of the method, the rhodium-based electron medium is successfully modified on a COF frame, efficient transfer of photo-induced electrons is achieved, the regeneration rate of NADH is increased, meanwhile, FDH enzyme is co-loaded, the FDH enzyme is embedded into the COF frame, and the catalytic activity of the COF frame is improved. The stability and reusability of enzyme reaction in the system are effectively protected, efficient utilization of NADH is achieved, the performance of reducing carbon dioxide through the photo-enzyme cascade reaction is remarkably enhanced, and the excellent photo-enzyme cascade performance is shown. When the loading and adding mass ratio of the rhodium-based electron medium is 0.6, the yield of formic acid per unit enzyme obtained by the loading enzyme reaction is 9 times of the yield of formic acid per unit enzyme reaction of the free enzyme reaction, which indicates that the material disclosed by the invention has higher photocatalytic ability and enzyme-retaining activity.