107results about How to "Promote conversion" patented technology

The invention discloses an emergency communication system and method, and belongs to the field of emergency communication. The emergency communication method comprises the following steps of: acquiring a link performance parameter of a satellite communication link associated with an adjacent station node; based on the state information and the satellite communication link state of the local station node, executing at least one of the following scheduling operations on the service data: determining a first transmission performance index for transmitting data through the satellite communication link of the local station node, determining a first transmission performance index of a composite path from a wireless ad hoc network to the adjacent station node based on the state information, determining a second transmission performance index of a composite path from the wireless ad hoc network to the adjacent station node and transmitting data through a satellite communication link of the adjacent station node based on the state information, and selecting a forwarding path according to a comparison result of the first transmission performance index and the second transmission performance index; or, when the flow of the data to be transmitted meets the preset bandwidth aggregation condition, dividing the data to be transmitted into the first data part and the second data part.

The application discloses an anti-ultraviolet aging polycarbonate modified material and application thereof, and belongs to the technical field of polymer material modification. The material comprises synergistically modified polycarbonate, an organic small-molecule functional regulator, an antioxidant, a light stabilizer, a lubricating dispersant and an inorganic filler, wherein the synergistically modified polycarbonate is constructed into a multiple synergistic network by introducing a borate dynamic covalent structure, a Schiff base structure and a rare earth coordination structure, and the organic small-molecule functional regulator is p-hydroxybenzophenone. The preparation method comprises preparation of the synergistically modified polycarbonate and a subsequent melt blending and extrusion process. Through the technical scheme, the synergistic effect of ultraviolet absorption, energy transfer and free radical inhibition is realized, the yellowing degree of the material is significantly reduced, the mechanical property retention rate and the optical stability are improved, and the material is suitable for the fields of automobile transparent parts, outdoor optical materials and electronic and electrical shell.

The application relates to the field of adsorbents, and discloses a LiLSX molecular sieve adsorbent and a preparation method thereof. The method comprises the following steps: 1) sequentially performing molding treatment, first drying and first calcination on a mixture of kaolin and NaLSX molecular sieve powder to obtain a first calcination product; 2) performing pre-wetting treatment on the first calcination product to obtain a pre-wetting product; 3) contacting the pre-wetting product with alkali and a silicon source or contacting the pre-wetting product with alkali and an aluminum source in the presence of water to obtain a contact product; 4) performing second drying and second calcination on the contact product to obtain a second calcination product; and 5) performing lithium ion exchange on the second calcination product by using an exchange solution containing lithium ions, and the amount of the NaLSX molecular sieve powder is 85% or more in weight based on the total weight of the mixture. The method can make the prepared LiLSX molecular sieve adsorbent have excellent adsorption performance and mechanical strength.

The application relates to a preparation and application of a molybdenum and indium co-modified cobalt-based catalyst for carbon dioxide hydrogenation synthesis of low-carbon alcohol, belonging to the field of catalysis. Co is used as an active component, In and Mo components are introduced, an alkali metal K additive is introduced, an In and Mo co-modified Co-based oxide precursor is created by adopting a sol-gel method, the precursor is reduced by hydrogen, and is further activated by CO2+H2, so that the In and Mo co-modified Co2C catalyst is obtained; the catalyst is used in a reaction of carbon dioxide hydrogenation for preparing low-carbon alcohol, under the condition that the reaction temperature is 340 DEG C and the reaction pressure is 3 MPa, the carbon dioxide conversion rate is more than 35%, and the low-carbon alcohol selectivity is close to 20%.

This utility model relates to the field of bridge seepage detection technology, and more particularly to a bridge seepage detection device, including a seepage detection component, an ultrasonic transmitting component, and a handheld component; the ultrasonic transmitting component is located at the rear end of the seepage detection component; the handheld component is located at the lower end of the seepage detection component. This utility model utilizes an ultrasonic generator to emit ultrasonic waves that pass through a second signal transmission protection panel and the ultrasonic coupling agent above it, reaching the bridge structure above the coupling agent. If there are seepage gaps within the bridge structure, the ultrasonic waves are reflected. The reflected ultrasonic waves pass through the first signal transmission protection panel and are detected by an ultrasonic signal receiver, which converts the ultrasonic signal into an electrical signal. The information processing module processes and analyzes the real-time monitored ultrasonic electrical signal to determine whether there is a seepage problem in the bridge in the detection area, thus improving the efficiency and accuracy of bridge seepage detection.

The invention provides a combined process method for improving the yield of vacuum residue catalytic cracking products, which comprises the following steps: determining the asphaltene dispersion coefficient d of vacuum residue according to a formula (1), where w asphaltene, w colloid and w aromatics respectively represent the mass fractions of asphaltene, colloid and aromatics in vacuum residue; and carrying out modification and catalytic cracking reaction on the vacuum residue. According to the combined process method, the asphaltene dispersion coefficient d is ingeniously designed, and d is smaller than or equal to 0.5 and dgt; the vacuum residue of which the content is 0.5 is modified by adopting different modification methods, and then catalytic cracking reaction is performed under different conditions, so that the density of a catalyst in a reactor is improved, oil-agent contact in the reactor is improved, the contact instantaneous effective agent-oil ratio can be improved, the catalytic cracking reaction ratio can be remarkably improved, thermal cracking and condensation coke generation reactions are reduced, and the catalytic cracking efficiency is improved. Conversion of inferior heavy oil is promoted, meanwhile, the coke yield is remarkably reduced, and the yield of high-value products is increased.

The present application relates to a kind of methods for catalytically converting methane to olefins, aromatics and hydrogen in joule heat coupled metal catalytic reactor.The methane feed gas heated by hot joule heat is passed into metal catalytic reactor for catalytic conversion reaction to prepare olefins, aromatics and hydrogen using joule heat as heat source.The conversion rate of methane is 35-85%;The selectivity of olefins is 65-90%;The selectivity of aromatics is 13-40%;Zero carbon deposition.The present application has the characteristics of electric heating conversion efficiency > 90%, long catalyst life, high methane conversion rate and product selectivity, zero carbon deposition, catalyst does not need to be enlarged, small industrialization difficulty, good process repeatability, safe and reliable operation, etc., and has broad industrial application prospect.

The invention relates to a display device and a personalized recommendation reason generation method. The display apparatus includes: a display configured to display a user interface; an audio output device configured to output sound; the controller is configured to display a search result page in response to a multimedia content search operation triggered by a target user; in the process that the target user carries out multimedia content search for the search result page, target multimedia content is selected; a personalized recommendation reason of the target multimedia content is obtained, and the personalized recommendation reason is generated based on the user portrait data of the target user and the media asset data of the target multimedia content; and controlling at least one of the display and the audio output device, and displaying the personalized recommendation reason. By adopting the display equipment, the conversion rate of a multimedia content search function can be improved.

The invention relates to a live broadcast content recommendation method and device, electronic equipment and a storage medium. The method comprises the following steps: displaying a content recommendation card on a live broadcast guide page; the content recommendation card comprises a recommendation tag and at least one piece of recommendation content corresponding to the recommendation tag; and in response to a trigger operation on the content recommendation card, displaying a live broadcast room, and displaying a corresponding content page in the live broadcast room based on the number of the recommended contents. According to the method, the recommendation dimension can be expanded, display of multiple recommendation contents under different recommendation tags is realized, the content currently explained by the live broadcast room is not limited to be displayed, and the richness of content recommendation is improved.

This invention discloses a rhizosphere iron-promoting bacterial strain that alleviates iron deficiency-induced premature aging in Litsea cubeba and its applications. It belongs to the field of agricultural microbiology and plant mineral nutrition regulation technology. This invention provides related products and specific applications. The strain of this invention possesses both ferric iron (Fe3+) reduction ability and siderophore production ability. On the one hand, it can promote the conversion of ferric iron to ferrous iron (Fe2+); on the other hand, it can chelate and activate iron in the rhizosphere environment through siderophores, thereby increasing the supply of active iron in the rhizosphere of Litsea cubeba. After the Litsea cubeba rhizosphere iron-reducing bacterium LcB6 is reintroduced, it can increase the chlorophyll content of Litsea cubeba leaves and the soluble iron content of the plant, increase the content of ferrous iron and available iron in the rhizosphere soil, and improve iron deficiency-induced premature aging phenotypes such as leaf yellowing and decreased plant growth vigor. This provides a new bacterial resource and application pathway for the regulation of rhizosphere iron nutrition in Litsea cubeba.

The utility model relates to wind power generation technical field discloses wind power generation device, including support subassembly, wind wheel subassembly and power generation subassembly, wind wheel subassembly includes main shaft and impeller, and the main shaft fixed mounting is in support subassembly, and the impeller rotatablely installs on the main shaft, power generation subassembly includes first power generation unit and second power generation unit, and the stator of first power generation unit and second power generation unit all fixed mounting is in main shaft, and the outer rotor of first power generation unit and second power generation unit all are connected with the impeller fixedly, the utility model under the same wind force condition, first power generation unit and second power generation unit can work simultaneously, and the mechanical energy of impeller capture is more efficient, more fully converts into electric energy, effectively increases the overall power generation, improves the wind energy utilization efficiency and power generation efficiency, solves when the outside wind speed is at the low level, and the overall power generation of generator is insufficient.

The application discloses a diabetic nephropathy pathological model based on human renal tubular epithelial cell organoids and a construction method and application thereof, and belongs to the field of biomedical technology. The construction method comprises the following steps: jointly inducing the renal tubular epithelial cell organoids in a culture medium containing glucose, advanced glycation end products and tumor necrosis factor alpha to prepare the diabetic nephropathy pathological model. The diabetic nephropathy pathological model is constructed by joint induction, the model shows the core pathological phenotypes of diabetic nephropathy, including down-regulation of renal tubular epithelial cell marker expression, up-regulation of fibrosis marker expression, thickening of the basement membrane and abnormal albumin uptake function, the construction method is simple and standardized, the construction period is short, the model has good repeatability and stability, the model has wide application value in high-throughput screening of traditional Chinese medicine monomers or compound medicines with kidney protection, and provides a new platform for mechanism research and treatment strategy development of diabetic nephropathy.

The present application belongs to the technical field of environmental remediation and soil ecological engineering, and particularly relates to a modified iron biochar-humus-sulfate-reducing bacteria (SRB) composite system for realizing efficient immobilization and ecological remediation of cadmium (Cd 2+ ) in heavy metal contaminated soil. The system can enhance the stability of microbial colonies and has the characteristics of physical and biological synergistic passivation, thereby realizing long-term stabilization and ecological remediation of heavy metals.

The invention relates to the technical field of probiotics, in particular to intestinal tract source pediococcus acidilactici of Yanqu county in Tibet and fat reducing application thereof. The pediococcus acidilactici disclosed by the invention is preserved in the China General Microbiological Culture Collection Center on April 29, 2025, and the preservation number is CGMCC NO.34406; the strain has the characteristics of acid resistance, cholate resistance and stress resistance, and has high survival rate and planting efficiency; the strain is free of hemolysis, free of toxic factors and high in safety; the strain can secrete short-chain fatty acid and antibacterial peptide, inhibit pathogenic bacteria and promote intestinal barrier repair; short-chain fatty acid generated by metabolism of most of carbon water by the strain can be directly absorbed by intestinal epithelial cells, and can be used as an energy substance to replace partial glucose demand, so that the metabolism energy consumption is reduced, the energy conversion rate of feed is improved, the feed conversion is promoted, and the effects of reducing fat and weight and improving the non-alcoholic fatty liver disease are achieved.

This utility model discloses a gripping and rotating coordinated apple-picking end effector, installed at the end of a picking robotic arm, comprising a cylindrical housing, a linear motor, a transmission mechanism, and a gripper assembly. The transmission mechanism converts the linear motion output by the linear motor into linear and rotational motions. The gripper assembly opens and rotates via an upward motion, and closes and rotates in the opposite direction via a downward motion to twist and break the fruit stem. The transmission mechanism uses a pin sleeve in cooperation with a central groove shaft, and achieves step-by-step movement through a spiral groove and a limiting groove structure. The gripper assembly completes clamping and twisting through a guide ridge and a hinge seat. This design simplifies the drive structure, reduces costs, improves reliability and picking efficiency, and is suitable for apple picking scenarios with short stems and dense branches.

The invention relates to a method for synergistically enhancing bank slope vegetation water quality purification through arbuscular mycorrhiza and nitrifying bacteria, and belongs to the technical field of water environment ecological management and ecological engineering. The method comprises the following three core steps: preparation of an arbuscular mycorrhiza-nitrifying bacteria immobilized complex microbial inoculant, construction of a bank slope vegetation rhizosphere microhabitat, and cooperative regulation and control of system stabilization and purification functions. According to the method, the rhizosphere microhabitat of the bank slope vegetation is actively intervened by artificially inoculating the fungicide formed by the arbuscular mycorrhiza and the nitrifying bacterium community, and the symbiotic system formed by the arbuscular mycorrhiza-nitrifying bacterium composite community and the plants is utilized, so that the method is environment-friendly, high in cost benefit, simple and stable in operation condition, easy to engineer and suitable for large-scale popularization and application. And an innovative solution is provided for realizing synergistic interaction of bank slope ecological restoration and water quality purification.

The application discloses a preparation method and application of a metal boride composite metal single element and sulfur composite nanomaterial, relates to the technical field of energy materials, and comprises the following steps: dissolving a metal salt in methanol, quickly adding a 2-methyl imidazole aqueous solution, and preparing a MOF precursor; dispersing the MOF precursor in a methanol deionized water solution, adding a reducing agent solution, and preparing a metal boride material; dispersing the metal boride material in a metal salt aqueous solution at room temperature, adding a sodium hydroxide solution, and calcining the product in an inert gas and a reducing gas atmosphere in sequence to obtain a metal boride@metal single element composite material; and mixing and calcining the obtained metal boride@metal single element composite material and elemental sulfur according to a mass ratio of 1:1-4. The material has good lithium polysulfide adsorption capacity, accelerates the kinetic conversion of polysulfides, and can improve the stability and actual service life of a lithium-sulfur battery.

The application belongs to the field of plant synthetic biology and plant gene expression regulation, and particularly relates to a vector for plant promoter double system quantitative characterization, a standardization method, a product and application. The method combines a protoplast transient expression system and an agrobacterium-mediated leaf transient expression system, uses a compact promoter characterization plasmid (pLIP) containing a firefly luciferase module driven by a to-be-detected promoter and a renilla luciferase internal reference module driven by a 35S promoter, and the two modules are located in a T-DNA interval. The ratio of the two luciferases is calculated, the RPU (relative promoter unit) method is introduced, a standard promoter (35S) is used as a reference, and normalization and direct comparison of promoter activities in different systems are realized. The scheme significantly improves the repeatability and cross-system compatibility of promoter activity data, and is suitable for efficient screening and standardized characterization of regulatory elements in plant synthetic biology.

The invention belongs to the technical field of medicines, and particularly relates to a probiotic-fermented medicinal and edible traditional Chinese medicine composition as well as a preparation method and application thereof. Specifically, the medicinal and edible traditional Chinese medicine composition comprises the following components: Chinese yam, lotus seed, white hyacinth bean, fingered citron, dandelion, coix seed, Chinese date, malt and liquorice. According to the invention, the medicinal and edible traditional Chinese medicine raw materials are crushed, and the probiotics are added for fermentation treatment, so that the medicinal and edible traditional Chinese medicine composition based on probiotic fermentation is obtained, and the composition has a good curative effect on chronic diseases such as gastrointestinal diseases and the like, thereby having a good practical application value.

The embodiment of the application provides a kind of propane ammoxidation preparation acrylonitrile, it is related to acrylonitrile generation technical field;The method comprises: propane, ammonia and oxygen are mixed, and mixed gas is obtained;The mixed gas occurs ammoxidation under the action of metal oxide composite catalyst, and acrylonitrile is obtained;The metal oxide composite catalyst includes Mo-V base metal oxide, and also includes alkali metal or alkaline earth metal.The method of the present application has relatively mild reaction conditions, the yield can basically reach more than 60%, the selectivity can reach more than 80%, improves the raw material utilization rate, reduces energy consumption and equipment investment, thereby effectively reducing the production cost of acrylonitrile.At the same time, the process of the present application can effectively control the side reaction in the reaction process, reduce the generation of by-products, and reduce the difficulty of subsequent separation and purification of reaction products.

The application provides application of nervonic acid in preparation of a product for promoting hair regeneration, and relates to the biological field. The application of nervonic acid in preparation of the product for promoting hair regeneration includes that the concentration of the nervonic acid in the product is 3%-10%, at least one of the following is included in promoting hair regeneration: activating Wnt signal pathway in hair follicle stem cells, promoting expression of beta-catenin, LEF1 and PCNA, and further including promoting hair follicle organoid development in vitro and improving hair follicle regeneration capacity. It is found that the nervonic acid can act on the hair follicle stem cells, effectively promotes the hair follicle from the resting phase to the growth phase by activating the Wnt / beta-catenin and other regeneration pathways, and up-regulating the expression of PCNA, LEF1 and other proliferation-related factors, and promotes hair regeneration. The technology retains the high efficiency and safety of the nervonic acid regulation, further expands the new application scene of the nervonic acid in the field of hair regeneration, and has significant conversion value and broad market prospect in the field of clinical treatment of alopecia.

The invention relates to the technical field of blueberry wine brewing, in particular to a mixed bacteria fermentation blueberry wine brewing process and application thereof, and the mixed bacteria fermentation blueberry wine brewing process comprises the following steps: raw material pretreatment: unfreezing, picking and crushing blueberries to obtain blueberry pulp; performing enzymolysis: adding potassium metabisulfite and pectinase into the blueberry pulp, and performing enzymolysis at 48-52 DEG C for 1-2 hours; sugar adjustment: adjusting the sugar degree of the blueberry pulp to 14-22Bx, and adjusting the pH value to 3.5-4.5; inoculating yeast: inoculating activated mixed yeast strains into the blended blueberry pulp, wherein the mixed yeast strains are RW angel wine yeast and 71B yeast; fermentation and post-treatment: fermenting the inoculated blueberry pulp with residues, filtering after fermentation to obtain the blueberry fruit wine, and through synergistic fermentation of RW angel wine yeast and 71B yeast, generating aroma substances such as esters and alcohols richer than that of single-bacterium fermentation, so that the wine body has strong fruit aroma, mellow wine aroma and soft fermentation aroma, is full in layering sense, and has a good taste. The problems that traditional fruit wine is thin in taste and serious in homogenization are effectively solved.

The invention relates to a carboxymethyl chitosan-amorphous calcium phosphate composite anti-caries material as well as a preparation method and application thereof, the composite anti-caries material is a composite gel system and comprises carboxymethyl chitosan, amorphous calcium phosphate and glycerol, and hydroxyapatite nanowires can be selectively added into the carboxymethyl chitosan-amorphous calcium phosphate composite anti-caries material. The composite anti-caries material provided by the invention successfully solves the ubiquitous problems of the existing fluoride-free remineralization material that the mineralization efficiency needs to be improved, the clinical operability is poor and the like, and provides a novel fluoride-free scheme which is safe, efficient and convenient to use for prevention and treatment of early caries.

The invention discloses a Pt nano-catalyst based on TS-1 molecular sieve strong metal-carrier interaction and application thereof.According to the Pt nano-catalyst based on TS-1 molecular sieve strong metal-carrier interaction and the application thereof, a two-step strategy of first oxidation and second thermal reduction is adopted, firstly, Pt and a carrier TS-1 form strong interaction, agglomeration of precious metal particles is hindered, and therefore the particle size of the precious metal catalyst is reduced, and the precious metal catalyst with the smaller particle size is prepared; the catalytic reaction activity of the noble metal catalyst is improved. In the subsequent reduction process, high-valence Pt is converted into a metal state, a Pt0 (Pt delta +) / PtOx interface structure is formed, and a new channel is provided for interface electron transfer and catalytic activity. Meanwhile, TS-1 can be induced to generate a large number of oxygen vacancies, the Lewis acid site of TS-1 is enhanced, and the strong interaction between Pt and TS-1 is enhanced. As a lithium-sulfur battery diaphragm coating material, conversion of polysulfide can be more effectively accelerated, the shuttle effect is inhibited, and the electrochemical performance of a lithium-sulfur battery is improved.

The invention discloses a nerve-like nitrogen-doped carbon confinement multi-component composite material for lithium-sulfur battery diaphragm modification and a preparation method, and relates to the technical field of lithium-sulfur batteries. The composite material comprises a three-dimensionally connected nerve-like nitrogen-doped carbon network and metal carbide nanoparticles confined at network nodes, the nerve-like nitrogen-doped carbon network is composed of carbon fibers and nodes which are connected with each other, the diameter of the nodes is larger than that of the carbon fibers, and the metal carbide nano-particles are wrapped by the graphitized nitrogen-doped carbon layer and embedded and combined at the nodes. The preparation method comprises the steps of precursor solution preparation, hydrothermal self-assembly, freeze drying and segmented heat treatment. According to the invention, the neural network structure is constructed and the metal carbide nanoparticles are confined in situ at the nodes, so that the physical barrier, chemical adsorption and catalytic conversion of polysulfide are realized, the shuttle effect is favorably inhibited, and the cycling stability and rate capability of the lithium-sulfur battery are improved.

This invention relates to a method and system for producing chemical feedstocks including ethylene based on an isotropic fluidized bed reactor. The method includes: (1) contacting and reacting feedstock oil with a shape-selective molecular sieve catalyst in an isotropic fluidized bed reactor to obtain an oil-catalyst mixture; (2) separating the oil-catalyst mixture to obtain reaction oil gas and a catalyst to be generated; and (3) separating the reaction oil gas in an oil-gas separation system to obtain chemical feedstocks including ethylene, C4 olefins, etc. In this invention, light petroleum hydrocarbons such as diesel oil are contacted with a shape-selective molecular sieve catalyst in an isotropic fluidized bed reactor, and ethylene, propylene, etc. are produced by maintaining self-heating equilibrium through regenerated flue gas circulation. This disclosed method can process naphtha, wax oil, residue oil, and other heavy oils while processing light hydrocarbons such as diesel oil. It achieves high yields of ethylene and propylene and can reach self-heating equilibrium, not only solving the problem of excess diesel production capacity in refineries but also compensating for the shortage of chemical feedstocks.

This invention provides a simple and environmentally friendly method for synthesizing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid ester. Unlike the conventional method of first converting excess carboxylic acid to the corresponding acyl chloride using thionyl chloride, removing the excess thionyl chloride, adding fresh solvent, and then adding the corresponding alcohol to form the ester, this method uses the following order of addition: thionyl chloride → ethylene glycol monomethyl ether → thionyl chloride → ethylene glycol monomethyl ether. The thionyl chloride and ethylene glycol monomethyl ether are added alternately. Under a certain amount of solvent, the generated ester is cleverly utilized to promote the dissolution of the acyl chloride, while simultaneously reducing the absolute content of the acyl chloride in the solution. This allows the reaction mixture to form a solution state, promoting complete conversion of the carboxylic acid and driving the reaction forward. This avoids the defect of the carboxylic acid raw material being encapsulated due to the poor solubility of the intermediate, resulting in incomplete reaction.

This utility model discloses a grinding and cleaning mechanism for the upper part and top wing plate mold of a T-beam side mold, including an electric walking mechanism, a second grinding disc, a second grinding frame, a bending lifting frame, and a second telescopic frame. The electric walking mechanism is mounted on the bottom mold of the traveling trolley. The second grinding disc is arranged in multiple rows in a staggered manner, rotatably connected to the second grinding frame and driven to rotate by a second drive mechanism. The multiple rows of second grinding discs can cover the upper vertical section of the side mold and, after bending, can cover the wing plate mold fixedly connected to the top of the side mold. The second grinding frame is fixedly connected to the bending lifting frame, which is used to lift and rotate the second grinding frame above the wing plate mold. The bending lifting frame is mounted on the second telescopic frame, which is fixedly connected to the electric walking mechanism. All the second grinding discs are made of metal brushes. This utility model can quickly grind the mold surface of the upper part and top wing plate mold of the side mold, saving time and labor, improving operational safety, and facilitating conversion.

This invention provides a method for increasing the content of benzene and naphthalene compounds in coal pyrolysis tar. The method includes: reacting low-rank coal pyrolysis volatiles sequentially through a carbon-based catalyst layer and a molecular sieve catalyst layer at a temperature of 500-800℃ under a protective gas atmosphere; the reaction products are then condensed to obtain tar. This method utilizes a series of carbon-based and molecular sieve catalysts for the catalytic cracking of low-rank coal pyrolysis volatiles, fully leveraging the abundant active sites of the carbon-based catalyst and the high selectivity of the molecular sieve. Through the synergistic effect of the carbon-based and molecular sieve catalysts, a significant increase in the content of benzene and naphthalene compounds in the tar obtained from coal pyrolysis is achieved.

This invention provides a device and method for achieving 9.2 μm mid-infrared laser output via stimulated Raman scattering, belonging to the field of mid-infrared laser source technology. In this invention, the pump laser output from the pump laser is input into a Raman cell filled with Raman medium gas to achieve a 1.9 μm wavelength laser output. It is then focused by a focusing lens into a second Raman cell filled with Raman medium gas, and finally output from the Raman cell after multiple reflections by a Herroitt concave mirror. The laser undergoes multiple focusing processes within the Raman cell. This invention utilizes an existing high-pulse-energy Nd:YAG fundamental frequency laser as the pump source to pump the Raman medium, generating a 9.2 μm wavelength second-order Raman laser through hydrogen stimulated Raman scattering. Compared to other methods, this invention can achieve a relatively high pulse peak power and a relatively high laser pulse energy at 9.2 μm.