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53results about How to "Guaranteed selectivity" patented technology

Penetration test agent system driven by large language model and test method

The invention provides a penetration test agent system driven by a large language model and a test method, and the system comprises a memory unit which is composed of a penetration test knowledge base, comprises data elements including vulnerability information, a penetration mode and tool information, and employs a knowledge graph to establish a vulnerability knowledge representation model; the intelligent unit is realized by a large model and is used for generating a tool calling instruction, a penetration test load and a penetration test strategy based on the memory unit; and the planning unit is used for splitting the penetration test task into a task planning state machine consisting of controllable sub-tasks so as to guide the large language model to execute a specific task. Through introduction of the large model, the knowledge base and the task planning unit, the automation and intelligence level of the penetration test task is improved; the integrity of knowledge retrieval is improved, and the interpretability and consistency of large model output are ensured; for a complex scene of a penetration test process, a highly customized proxy behavior is realized, and a penetration test task execution process is guaranteed.
Owner:NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP

System for suppressing subsynchronous oscillation of doubly-fed grid-connected system

The invention relates to the technical field of subsynchronous oscillation suppression, in particular to a system for suppressing subsynchronous oscillation of a doubly-fed grid-connected system, and the system comprises a doubly-fed generator module which is used for converting wind power into electric energy; the subsynchronous oscillation spectrum disturbance module specifically comprises a current disturbance generation unit and a phase decoupling optimization unit; and the multi-frequency domain decomposition and absorption module specifically comprises a frequency spectrum decomposition unit and a self-adaptive absorption unit. According to the invention, the current disturbance generation unit actively injects a low-power and non-linearly distributed current disturbance signal, dynamically destroys the coherence of the subsynchronous oscillation signal, and combines the spectrum decomposition unit to accurately identify the subsynchronous oscillation dominant frequency and the harmonic component thereof, thereby refining the distribution analysis of the oscillation energy, and improving the accuracy of the subsynchronous oscillation. The high-precision target positioning capability is provided for the oscillation suppression strategy, the multi-level oscillation suppression from active disturbance to precise control is realized through the cooperative operation of the two, and the stability and adaptability of the system under the complex power grid condition are effectively improved.
Owner:DATANG GUYUAN NEW ENERGY CO LTD

Wind power low-frequency power transmission line time domain model identification pilot protection method and system

The invention discloses a wind power low-frequency power transmission line time domain model identification pilot protection method and system, and the method comprises the steps: collecting the voltage and current of an offshore wind power low-frequency power transmission line, specifically, collecting the A, B and C three-phase voltage and current data of a home terminal and the three-phase current data of an opposite terminal, carrying out the phase-mode conversion of the collected voltage, and carrying out the phase-mode conversion of the collected voltage; the phase-mode transformation matrix can adopt a Clark transformation matrix; when a set condition is met, protection is started; for the collected current data, eliminating the current flowing into the shunt reactor, and subtracting the current of the shunt reactor from the measured current to obtain an actual line differential current; calculating opposite-end voltage current by using the local-end voltage current; determining a first derivative of the differential current variable quantity and a second derivative of the differential voltage variable quantity to obtain a correlation coefficient of the differential current voltage; and comparing the calculated differential current and voltage correlation coefficient with a setting value, and when a fault phase line discrimination condition is satisfied, determining that a corresponding phase has a fault.
Owner:NORTHWEST BRANCH OF STATE GRID POWER GRID CO +1

Power transmission line disconnection fault protection method, device and equipment and storage medium

The invention relates to a power transmission line disconnection fault protection method, device and equipment and a storage medium, and the method comprises the steps: collecting a phase voltage value, a zero sequence voltage value and two groups of phase current values of a power transmission line in real time, carrying out the real-time monitoring of a circuit breaker, and obtaining a position state signal; according to the phase current value and the position state signal, whether the current transformer has a disconnection fault is judged in real time, and when the current transformer has the disconnection fault, a CT disconnection signal is output; obtaining a current break variable of the transmission line, calculating a self-produced zero-sequence current according to the phase current value, judging whether the self-produced zero-sequence current, the zero-sequence voltage value or the current break variable meets a preset condition or not, and if yes, outputting a disconnection protection starting signal; and after disconnection protection is started, judging whether the power transmission line has a disconnection fault or not according to the phase voltage value, the phase current value, the position state signal and the CT disconnection signal, and if the judgment result is yes, outputting a circuit breaker tripping outlet and a starting failure outlet.
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD

Ultrathin polymer biphase hydrogen separation membrane with porous structure as well as preparation method and application of ultrathin polymer biphase hydrogen separation membrane

The invention discloses an ultrathin polymer biphase hydrogen separation membrane with a porous structure and a preparation method and application thereof, and relates to the technical field of hydrogen separation membrane preparation, and the preparation method specifically comprises the following steps: S1, preparing a polybenzimidazole homogeneous solution; s2, preparing a membrane casting solution; s3, preparing a proton-electron mixed conductive layer; s4, immersing the proton-electron mixed conductive layer into methanol for a period of time at room temperature, and then carrying out vacuum drying to obtain a proton-electron mixed porous conductive layer; and S5, loading a Pt particle catalyst on two sides of the membrane of the proton-electron mixed porous conductive layer, the junction of the porous layer and the compact layer and the inner surface of a porous channel of the porous layer through an ion sputtering method to obtain the ultrathin polymer biphase hydrogen separation membrane with the porous structure. According to the ultrathin polymer biphase hydrogen separation membrane with the porous structure, the 100% selectivity of hydrogen is guaranteed, and the permeation flux of hydrogen is improved.
Owner:INNER MONGOLIA UNIV OF TECH

Preparation method and device for improving selectivity of methallyl chloride

The invention discloses a preparation method and device for improving selectivity of methallyl chloride, the device adopts two sections of reactors, the first section is a main reactor, and a chlorination reaction is mainly carried out in the first section of reactor; chlorine is quantitatively introduced into the second-section reactor so as to consume residual isobutene at the front end. According to the method disclosed by the invention, the chlorination reaction is carried out by utilizing the two-stage reactor, the ratio of isobutene to chlorine is reasonably controlled, and the generation of polychlorinated by-products is inhibited, so that the main product methyl allyl chloride keeps high selectivity, meanwhile, the complete conversion of isobutene is ensured, and the problem of separation of isobutene and hydrogen chloride in tail gas is avoided. According to the process disclosed by the invention, the selectivity of the methallyl chloride reaches 90%, and the economic benefit of the device is obviously improved.
Owner:滨化技术有限公司

Method for preparing adipic acid through cyclohexane oxidation and production system

The invention discloses a method for preparing adipic acid through cyclohexane oxidation and a production system, and the method comprises the following steps: in the presence of an initiator, cyclohexane and oxygen-containing gas are subjected to a non-catalytic oxidation reaction to generate adipic acid; wherein the initiator comprises a free radical containing a cyclohexyl functional group or peroxide. The invention provides a novel method and a production process system for generating adipic acid through non-catalytic oxidation reaction of cyclohexane and oxygen-containing gas in the presence of an initiator, the method can realize that the selectivity of adipic acid is kept above 80% under the condition of higher conversion rate of cyclohexane, and the adipic acid solid product can be directly crystallized and separated out from the reaction liquid, so that the production process system is suitable for industrial production. The adipic acid production method is simple and pollution-free, and has important industrial application value.
Owner:YANGZHOU UNIV

A metal oxide-supported active metal catalyst, a method for preparing the same, and use thereof

The application provides a metal oxide supported active metal catalyst, a preparation method and application thereof. The metal oxide supported active metal catalyst comprises a metal oxide carrier and active metal particles supported on the metal oxide carrier; the loading amount of the active metal is 0.1wt%-5wt% based on 100% of the mass of the metal oxide carrier. It is tested that the hydrogenation reaction of carbonates to prepare formate by using the metal oxide supported active metal catalyst provided by the application as a hydrogen source or using gaseous carbon monoxide with different concentrations and water to provide in-situ hydrogen source for the water gas shift reaction realizes the hydrogenation reaction of carbonates to prepare formate, the yield of the obtained formate is high, the selectivity is above 99%, there is no attenuation after 6 cycles, and the metal oxide supported active metal catalyst has excellent bifunctional effect. In addition, the preparation method of the metal oxide supported active metal catalyst is simple, the operation condition is mild, and the cost is low, so that large-scale production can be realized.
Owner:UNIV OF SCI & TECH OF CHINA

Continuous synthesis process and device of alkenyl succinic anhydride

The invention relates to the technical field of alkenyl succinic anhydride synthesis, in particular to a continuous synthesis process and device for alkenyl succinic anhydride, and the continuous synthesis process at least comprises the following steps: filling a fixed bed reactor with an immobilized AlCl3 catalyst; a mixed material obtained after preheating of maleic anhydride and internal olefin enters a fixed bed reactor, the mixed material makes contact with an immobilized AlCl3 catalyst and is subjected to a catalytic reaction to synthesize a crude product, the crude product is cooled, olefin is separated and recycled through distillation, and the alkenyl succinic anhydride product is obtained after filtration. Compared with a traditional production technology, continuous production is achieved, the technological process is simple, safety is higher, and the production cost is low. Meanwhile, the energy consumption and the equipment investment cost are effectively reduced, and large-scale industrial application production is easy to realize.
Owner:GUANGDONG HUAJINDA NEW MATERIAL TECH CO LTD

CuZnHo catalyst for preparing methanol through catalytic hydrogenation of CO2 as well as preparation method and application of CuZnHo catalyst

The invention relates to a CuZnHo catalyst for preparing methanol through catalytic hydrogenation of CO2 as well as a preparation method and application of the CuZnHo catalyst. The catalyst comprises Cu, Zn and Ho in a molar ratio of (5-6): (3-4.9): (0.1-2). Compared with the prior art, the heavy rare earth element holmium is innovatively introduced into the traditional CuO-ZnO catalyst, so that the novel CuZnHo catalyst can react CO2 with hydrogen at a lower temperature to generate methanol, the conversion rate of the carbon dioxide and the selectivity of the methanol are higher, and the space time yield of the methanol is higher. The CuZnHo catalyst is prepared by adopting a simple and efficient coprecipitation method, and the industrial application prospect is wide.
Owner:EAST CHINA UNIV OF SCI & TECH

An In-Co-Zr composite catalyst, its preparation method and application

This invention discloses an In-Co-Zr composite catalyst, its preparation method, and its application, relating to the technical field of hydrogenation catalysts. The In-Co-Zr composite catalyst comprises an In₂O₃ support and an active component and structural promoter Zr supported on the In₂O₃ support, wherein the active component includes CoIn. x and Co3InC 0.75 The molar ratio of In, Co, and Zr in the composite catalyst is (1-9):(1.5-2.5):1. The In-Co-Zr composite catalyst exhibits a uniform distribution of active components and a high density of active sites. In the catalytic hydrogenation of CO2 to methanol, it can improve CO2 conversion while ensuring high methanol selectivity, and also possesses good heat resistance and anti-sintering properties. Under reaction conditions of 310℃, the CO2 conversion rate reaches 17.4% and the methanol selectivity reaches 77.7% during the catalytic hydrogenation of CO2 to methanol.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Octahedral BIF-29 catalytic material as well as continuous preparation method and application thereof

The invention discloses an octahedral BIF-29 catalytic material as well as a continuous preparation method and application thereof, and belongs to the field of electrochemical catalysis. The octahedral BIF-29 catalytic material comprises a metal copper salt and an organic ligand, and the organic ligand is tri (1H-imidazolyl) potassium borohydride; the metal copper salt is copper nitrate. The octahedral BIF-29 catalytic material is of an M6L8 structure, namely, six metal copper sites are connected with eight organic ligands to form a cage structure, the octahedral BIF-29 catalytic material has six exposed mononuclear copper centers, the interior of the octahedral BIF-29 catalytic material is connected with the ligands through copper-nitrogen bonds, and the microstructure of the octahedral BIF-29 catalytic material is octahedral. The octahedral BIF-29 catalytic material only needs to be continuously synthesized at a relatively low temperature, and can be used as a high-efficiency electrocatalytic reduction carbon dioxide catalyst without further treatment. When the octahedral BIF-29 catalytic material participates in an electro-catalysis carbon dioxide reduction reaction, the electro-catalysis carbon dioxide reduction conversion efficiency of the octahedral BIF-29 catalytic material reaches up to 93.7%.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

Organic catalyst for synthesis reaction of 2-heptanone as well as preparation method and application of organic catalyst

The invention relates to an organic catalyst for 2-heptanone synthesis reaction and a preparation method and application thereof.The organic catalyst is prepared from, by weight, 7-45 parts of active components, 0.1-2.5 parts of auxiliaries and 50-120 parts of carriers, the active components comprise the first active component and the second active component, the weight ratio of the first active component to the second active component is (60: 1)-(3: 1); wherein the first active component is one or more of iron oxide, tungsten oxide, molybdenum oxide, titanium oxide, chromium oxide, vanadium oxide, copper oxide, zinc oxide, nickel oxide, cobalt oxide and manganese oxide; and the second active component is one or more of lanthanum, cerium, indium, praseodymium, neodymium, gadolinium and holmium.
Owner:GUANGZHOU JUTAI NEW MATERIAL TECHNOLOGY CO LTD

Low-voltage direct-current current-limiting circuit breaker with adjustable current-limiting capability

The utility model discloses a low-voltage DC current-limiting circuit breaker with adjustable current-limiting capability, which comprises a power supply, the power supply is connected with an adjustable resistor module through a line L1, the adjustable resistor module is connected with a circuit breaker, the circuit breaker is connected with a current-limiting circuit breaker through a line L2, and the adjustable resistor module is a slot type resistor. According to the low-voltage direct-current current-limiting circuit breaker with the adjustable current-limiting capability, a resistor element is adopted for current limiting, a current-limiting resistor slot is arranged inside, the resistance value is marked outside an insertion piece, resistors can be independently inserted into two poles, the resistance values of the resistors are different, the output current of the current-limiting circuit breaker is matched with different resistor modules according to the level difference, and the purpose of adjusting the current-limiting capability is achieved; the current-limiting circuit breaker can effectively solve the problem that stage difference matching of a current direct-current power supply system is difficult, selectivity of each stage of switch can be guaranteed, operation safety of a direct-current system is enhanced, and electric energy loss is reduced.
Owner:NINGXIA XIANKE ELECTRICITY DESIGN CONSULTATION CO LTD

Carbon sink measurement system and method for multi-type urban green space ecosystems

The present invention discloses a carbon sink measurement system and method for multi-type urban green space ecosystems, belongs to the technical field of carbon sink measurement, solves the problem of inaccurate evaluation results caused by uneven data distribution or insufficient sample size when the existing method uses a feature selection algorithm to extract characteristic factors. The method comprises: collecting time-series urban green space carbon sink correlation data, determining characteristic factors that affect the carbon sink amount in a carbon sink pretreatment concentration based on a characteristic factor extraction model, analyzing the characteristic factor set in combination with a carbon storage method and a characteristic factor extraction model, and calculating the biomass of trees and shrubs in urban green spaces; the present invention constructs a characteristic factor extraction model by combining a GBR model with a global sensitivity analysis, thereby accurately determining the characteristic factors that affect the carbon sink amount in a carbon sink pretreatment concentration, reducing uncertainty in carbon sink estimation, and ensuring the accuracy of evaluation results when data distribution is uneven or the sample size is insufficient.
Owner:ANHUI CONSTR ENG ECOLOGICAL TECH CO LTD

Methylbenzene steam detection gas sensor and preparation method thereof

The invention discloses a toluene steam detection gas sensor and a preparation method thereof, the sensor takes a porous Co3O4 material synthesized by a mixture of a cobalt compound, urea and a solvent through hydrothermal and annealing as a sensitive body, and the interaction of gas on the surface of the sensor is improved through a surface pore-forming technology. The gas sensor is deposited on the surface of a planar gold interdigital electrode through a coating process to prepare a gas sensitive element. The obtained sensitive element has good response to toluene steam, and the detectable actual concentration is as low as 1 ppm. In addition, the sensor also has the capability of resisting interference of other organic steam, and has better selective response to toluene steam. The kit can be used as a beneficial tool for preliminary diagnosis of lung cancer clinically.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Proton exchange membrane compounded on basis of large-area single-layer nano-porous graphene Nafion and method for preparing proton exchange membrane

The invention discloses a composite proton exchange membrane based on large-area single-layer nano-porous graphene Nafion and a preparation method of the composite proton exchange membrane. The preparation method comprises the following steps: firstly, performing plasma etching to obtain a graphene / copper foil sample; spin-coating Nafion latex on the graphene surface of the graphene / copper foil sample; the spin-coated graphene / copper foil sample is dried and cured, a Nafion film is hot-pressed on the spin-coated surface of the graphene sample, and a Nafion / graphene / copper foil sample is obtained; the method comprises the following steps: etching a Nafion / graphene / copper foil sample in an etching solution, then washing the sample, and completing etching, cleaning and airing of the residual copper foil; the Nafion latex is continuously spin-coated; the spin-coated Nafion / graphene sample is dried and cured, and then the spin-coated Nafion / graphene sample and a Nafion thin film are subjected to hot-pressing compounding; and soaking the Nafion / graphene / Nafion sample in an acid solution, and airing to obtain the proton exchange membrane based on the large-area single-layer nano-porous graphene Nafion composite. According to the invention, the bottleneck of performance improvement caused by insufficient selectivity of the proton exchange membrane and low proton transmission efficiency of the intrinsic graphene is effectively solved.
Owner:XI AN JIAOTONG UNIV

A dual-support hydrocracking catalyst, its preparation method and application

PendingCN122583002AImprove carbon storage capacityRetain strong acidity
This invention provides a dual-support hydrocracking catalyst, its preparation method, and its application. The dual-support hydrocracking catalyst comprises a composite support and an active metal. The composite support is composed of USY molecular sieve and MCM-41 mesoporous molecular sieve. The active metal comprises at least two transition metal elements. The mass ratio of the composite support to the active metal is (2~5):1; the mass ratio of the USY molecular sieve to the MCM-41 mesoporous molecular sieve is (0.5~2):1. The supported hydrocracking catalyst provided by this invention constructs a microporous-mesoporous synergistic pore structure, balancing activity and stability. By using a dual support composed of USY and MCM-41 in a specific ratio, the strong acidity and high shape selectivity of USY molecular sieve are retained, while the mesoporous structure of MCM-41 solves the problem of limited diffusion of macromolecular raw materials, significantly improving the catalyst's carbon-holding capacity and significantly improving its resistance to colloids and carbon deposition.
Owner:JIANGSU SUPEZET INTELLIGENT HEAVY IND CO LTD

In-situ composite catalyst for catalytic hydrogenation of cornus wilsoniana oil as well as preparation method and application of in-situ composite catalyst

The invention discloses a cornus wilsoniana oil catalytic hydrogenation in-situ composite catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, a bimetallic element generated on the carrier in situ and an in-situ carbon layer uniformly attached to the surface of the bimetallic element, the bimetallic element is composed of an alkali metal element and a non-precious metal element, and the mass percentage of the bimetallic element is 0.5-10 wt% of the total mass of the composite catalyst; the thickness of the in-situ carbon layer ranges from 0.5 nm to 2 nm. The preparation process of the catalyst comprises the following steps: dissolving a bimetallic element raw material in deionized water in a stirring state, slowly adding a dispersing agent for uniform dispersion, adding the carrier in a stirring state, and sequentially drying and performing two-stage calcination after full dipping. The catalyst is used for preparing the aviation kerosene through catalytic hydrogenation of cornus wilsoniana oil, the raw material conversion rate can reach 60%, the target product selectivity is 80% or above, and the technical target that the aviation kerosene can be biochemically treated can be achieved.
Owner:HUNAN ACAD OF FORESTRY

Chemically modified rare ginsenoside derivative, and preparation method and application thereof

ActiveCN121652217BMeet safety standardsEliminate the risk of toxic side effectsSulfationPtru catalyst
The present application belongs to the technical field of natural product chemical modification, and particularly relates to a chemically modified rare ginsenoside derivative, a preparation method and application thereof. The present application takes rare ginsenoside as raw material, introduces a sulfate group by sulfating modification on the rare ginsenoside to obtain a chemically modified rare ginsenoside derivative; the modifier used in the sulfating modification is a sulfonating agent. The rare ginsenoside is synthesized by conversion with ginsenoside Rb1 as raw material and AlCl3 as catalyst in an ethanol system. The modification method of the present application is simple in operation steps, does not require special equipment, is suitable for large-scale production, and has a broad application prospect in the field of drug preparation development and the like.
Owner:XI'AN POLYTECHNIC UNIVERSITY

Selective hydrogenation process and catalyst therefor

The application provides a selective hydrogenation method, comprising the following steps: providing a hydrogenation catalyst, which is a carbon-coated nickel nanocomposite with sulfur-containing urea on the surface; contacting a hydrogenation substrate, hydrogen and the catalyst, and catalyzing the reaction under the condition of liquid-phase hydrogenation; the benzene ring of the hydrogenation substrate contains a nitro group and a carbon-carbon unsaturated bond simultaneously. When the benzene ring of the hydrogenation substrate contains a nitro group and a carbon-carbon unsaturated bond simultaneously, the hydrogenation method and the catalyst can hydrogenate the nitro group with high activity and high selectivity.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A molybdenum sulfide ore inhibitor, a copper-molybdenum sulfide ore flotation separation method and application

This invention relates to the field of mineral processing technology, and particularly to a depressant for molybdenum sulfide ore and a flotation separation method and application for copper-molybdenum sulfide minerals. The depressant comprises polyphenols; the polyphenols have the molecular formula C0.05. 32 H 30 O 11 The molecular weight is 590.57 g / mol, and the degree of polymerization is 2-11. The molybdenum sulfide mineral depressant is used for the flotation of copper-molybdenum sulfide minerals. The copper-molybdenum sulfide minerals contain chalcopyrite and molybdenite, with a mass ratio of 1-2:1. This invention provides a molybdenum sulfide mineral depressant and a flotation separation method and application for copper-molybdenum sulfide minerals. The aim is to solve the problems of high toxicity, high loss rate, and high intermingling of existing copper-molybdenum sulfide mineral separation flotation depressants, and to achieve effective separation of chalcopyrite and molybdenite.
Owner:CENT SOUTH UNIV

A method for preventing over-reach tripping of a multi-point fault in a multi-power supply power distribution network

The application discloses a method for preventing grade jumping trip of multi-point fault of multi-power distribution network, after detecting the fault, real-time calculation and record of the fault power direction, when the fault occurs in the positive direction of protection, sending the blocking signal to the bus side, when the fault occurs in the reverse direction of protection, sending the blocking signal to the tie side, when the detected fault power direction element only has a single direction, keeping the blocking signal output unchanged, when the positive direction of the fault power element and the reverse direction of the fault power element are detected at the same time, according to the power element direction and the received signal, adjusting the blocking signal output, not receiving the blocking signal, blocking release or receiving the blocking signal but exceeding the total timeout, the protection action outlet. The scheme is simple in configuration and clear in structure, through the fault power direction element judgment and the protection blocking signal, the relay blocking signal and the release blocking signal interaction, the selectivity of the protection action is ensured, the fast positioning and reliable isolation function of the multi-point fault of the multi-power distribution network are realized.
Owner:NANJING HONGYI ELECTRICAL APPLIANCE AUTOMATION CO LTD

Flotation collector for refractory gold ore and its preparation method and application

The present invention provides a flotation collector for refractory gold ore and its preparation method and application. The flotation collector includes 25 to 30 parts of N-phenyl-2-mercaptobenzimidazole, 15 to 20 parts of phenol black medicine, 7.5 to 9 parts of surfactant, 3 to 4 parts of emulsifier, 1 to 2 parts of alkali, 1 to 2 parts of defoamer, 2 to 3 parts of foaming agent and 70 to 80 parts of water by weight. The preparation method of preparing solution I and solution II separately and then fully mixing the two solutions can effectively play the synergistic effect between the reagents to obtain a collector with stable foam, strong collection effect and selectivity. When the flotation collector of the present invention is applied to gold ore flotation, it effectively improves the recovery rate and grade of fine-grained and micro-particle gold ore dressing, especially the roughing pre-enrichment of low-grade, easy-floating and easy-mud gold ore and the adjustment and optimization effect of flotation environment are remarkable; it also has the characteristics of small dosage of reagents, remarkable flotation effect, safety and environmental protection, and high market promotion value.
Owner:CHINA MINMETALS CHANGSHA MINING RES INST

A hybrid matrix membrane for CO2 separation and its preparation method

This invention provides a method for preparing a mixed matrix membrane for CO2 separation, including the preparation of an electrospinning precursor solution and electrospinning, the preparation of hollow ZnO nanotubes, the preparation of ZIF-8 hollow nanotubes, the preparation of a modified IL@MOF composite material, the preparation of a casting precursor solution and coating, and the preparation of a mixed matrix membrane for CO2 separation. The mixed matrix membrane for CO2 separation prepared by this invention has high permeability and high adsorption selectivity, and has high promotion and commercialization value.
Owner:NINGBO UNIV

A water pump motor detection system that is easy to adjust and use

The invention relates to the field of water pump motor production, and discloses a water pump motor detection system that is easy to adjust and use, comprising a working plate, one side of which is fixedly connected to an auxiliary box; a guide groove body, which is connected to the working plate, and the guide groove body is intermittently provided with racks, and the rack is meshingly connected with an actuator connected to the guide groove body; an impactor, which is arranged in the guide groove body and is used for steering and impacting; a simulation mechanism, which is fixedly connected to the bottom of the auxiliary box. The present invention can conveniently change multiple environmental parameters and perform diversified detections at the same time, thereby facilitating the entire detection and reducing the difficulty of work. Combined with the guide groove body that can be manufactured or spliced ​​as a whole, multiple paths can be selected to ensure the execution and selection of the work.
Owner:ZONQ MOTOR CO LTD

Efficient desulfurization method for preparing methanol from coke oven gas

The invention discloses an efficient desulfurization method for preparing methanol from coke oven gas, and belongs to the technical field of coke oven gas resource recovery. The invention is used for solving the technical problem that the selectivity and efficiency of sulfide removal and the purity of methanol need to be further improved in the process of preparing methanol from coke oven gas in the prior art, and relates to an efficient desulfurization method for preparing methanol from coke oven gas, which comprises the following steps: desulfurizing the coke oven gas by using modified Cu-BTC; performing component separation on the desulfurized coke oven gas; the method comprises the following steps: absorbing methane and other small molecular hydrocarbons by using Cu-ZSM-5, and reforming steam to obtain hydrogen and carbon monoxide; methanol is prepared using gas separated from coke oven gas and gas obtained by steam reforming. According to the experiment, Cu-BTC and ZSM-5 are modified, so that the selectivity and efficiency of recovery of small molecular hydrocarbons such as hydrogen sulfide and methane are improved, and the step of steam reforming of small molecular hydrocarbons such as methane is adjusted, so that the concentration of methanol is further improved.
Owner:LINHUAN COKING

A Au and Co co-doped holmium ferrite gas-sensitive material and its application

The invention discloses a Au and Co co-doped holmium ferrite gas-sensitive material and its application, and relates to the technical field of formaldehyde gas sensors. The invention adopts holmium nitrate, ferric nitrate and cobalt nitrate as reaction raw materials, and obtains Co-doped holmium ferrite material by sol-gel method, and then mixes it with chloroauric acid and calcines it to obtain Au and Co co-doped holmium ferrite gas-sensitive material. The invention utilizes the catalytic activation of Au and the oxygen vacancy regulation effect of Co, and the surface of the material can more stably adsorb and decompose formaldehyde molecules, showing better selectivity compared with non-polar interfering gases. At the same time, by utilizing the synergistic effect of the molecular characteristics of formaldehyde and the doping of Au and Co, not only the response sensitivity and selectivity of the material to formaldehyde are improved, but also the rapid low-temperature detection of formaldehyde gas is realized, and the energy consumption of the gas-sensitive material is significantly reduced, so that it has good stability and long-term performance in practical applications.
Owner:SHANDONG JIANZHU UNIV

A large language model driven penetration testing agent system and testing method

The present invention provides a penetration test agent system and testing method driven by a large language model, including: a memory unit, which is composed of a penetration test knowledge base, contains data elements including vulnerability information, penetration methods, and tool information, and uses a knowledge graph to establish a vulnerability knowledge representation model; an intelligent unit, which is implemented by a large model and is used to generate tool call instructions, penetration test loads, and penetration test strategies based on the memory unit; a planning unit, which is used to split the penetration test task into a task planning state machine composed of controllable subtasks, and then guide the large language model to perform specific tasks. The present invention improves the level of automation and intelligence of penetration test tasks through the introduction of large models, knowledge bases, and task planning units; improves the completeness of knowledge retrieval, and ensures the interpretability and consistency of large model output; implements highly customized proxy behaviors for complex scenarios in the penetration test process, and ensures the execution process of penetration test tasks.
Owner:NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP