446 results about "Kerosene" patented technology

The invention belongs to the technical field of aircraft oil leakage monitoring, and relates to an aircraft oil leakage detection method based on a high-sensitivity mass spectrometry technology, and the method comprises the steps: obtaining a time-resolved mass spectrogram of aviation kerosene molecules in a sample testing stage, and storing the time-resolved mass spectrogram in a database; then oil gas molecules are captured at leakage-prone points of an aircraft pipeline system through a gas collection probe, the captured oil gas molecules are transmitted to an ion source end of a proton transfer reaction mass spectrometer through a negative pressure transmission system to be ionized to generate ions, and the ions are analyzed by a mass analysis system to obtain a mass spectrum; comparing the mass spectrogram obtained by analysis with a time-resolved mass spectrogram in a database, and judging whether leakage occurs or not; based on the method, the problems of insufficient anti-interference capability, difficulty in sample collection and the like of a high-sensitivity mass spectrum oil gas leak detection method can be solved in a targeted manner, and the functions of environmental interference suppression, efficient collection of oil gas molecules, improvement of spatial scanning resolution and the like can be realized at the same time.

The invention discloses an aviation kerosene quality online detection and optimization system based on a green hydrogen substitution technology, and relates to the technical field of quality detection, and the aviation kerosene quality online detection and optimization system comprises a quality monitoring module, an optimization control module and a carbon footprint tracking and verification module. The quality monitoring module monitors the purity of sulfide, aromatic hydrocarbon and hydrogen in real time through a multispectral and electrochemical sensor, determines the optimal mounting position of the sensor by combining hydrodynamic analysis, triggers early warning when the sensor exceeds the standard, and pushes the sensor to the optimization module. The optimization control module dynamically adjusts temperature, pressure and green hydrogen flow based on a deep reinforcement learning algorithm, constructs a multi-objective optimization model, maximizes sulfur removal efficiency, reduces energy consumption and carbon emission, and realizes closed-loop intelligent regulation and control; according to the method, the accuracy and real-time performance of aviation kerosene quality detection and regulation are improved, effective tracking and verification of the green hydrogen full-life-cycle carbon footprint are realized, and the green sustainable development of aviation kerosene production is promoted.

The utility model belongs to the field of hypersonic propulsion, particularly relates to a preheated liquid fuel single droplet generation system under a high-speed incoming flow condition, and aims to solve the problem that in the prior art, a system capable of illustrating different broken forms of preheated liquid fuel single droplets and a droplet breaking kinetic model under the high-speed incoming flow condition is lacked. The kerosene instillation test bench comprises a test bench, a high-speed incoming flow generation system and a kerosene instillation controller, the high-speed incoming flow generation system and the kerosene instillation controller are both fixedly arranged on the test bench, and the input end of the high-speed incoming flow generation system is communicated with the output end of the kerosene instillation controller. According to the method, different broken forms of a single droplet of the preheated liquid fuel and a droplet breaking kinetic model under the high-speed incoming flow condition are clarified, the understanding of the physical process of secondary atomization of transverse injection of different preheated liquid fuels under the high-speed incoming flow condition can be deepened, and meanwhile, a reference is provided for engineering application of an engine injection scheme.

The invention discloses a bifunctional composite catalyst for preparing aviation kerosene through direct hydrogenation of carbon dioxide. The bifunctional composite catalyst is prepared from the H-ZSM-5 zeolite molecular sieve and a composite metal oxide InZnZrOx. Wherein the H-ZSM-5 zeolite molecular sieve is obtained by an inventor through a hydrothermal method, the appearance, the acid strength and the acid amount of the molecular sieve can be accurately controlled through the method, a hierarchical pore structure in a pore channel can be increased, and the selectivity of aviation kerosene components can be well improved; the problems that the diffusion of the heavy carbon aromatic hydrocarbon product in the pore channel of the zeolite molecular sieve is blocked, so that the catalyst is easy to deposit carbon, and the acidic site is covered are solved to a great extent; the composite metal oxide InZnZrOx can be prepared through flexible and efficient coprecipitation, and the problems that in an InZnZrOx / flaky hierarchical pore H-ZSM-5 molecular sieve difunctional composite catalyst, the metal oxide dispersity is low, and the catalytic activity is low are solved.

The invention provides a method for preparing a high-purity vanadyl sulfate electrolyte based on carbonaceous slate type stone coal vanadium ore. The method is characterized in that mixed acid of 10% sulfuric acid and 10% hydrochloric acid is used for soaking the carbonaceous slate type vanadium ore to obtain ash obtained through decarburization power generation, a leaching solution obtained after solid-liquid separation is reduced through SO2 generated in the decarburization power generation process, a tetravalent vanadium leaching solution is obtained, and the pH range is 1.8-2.6. Carrying out multi-stage counter-current extraction on the leachate by using a P204 / P507 / Cyanex272: TBP: sulfonated kerosene system, and after two phases are separated, carrying out multi-stage counter-current counter-extraction on a vanadium-loaded organic phase by using a 1-5mol / L sulfuric acid solution to obtain a high-purity vanadyl sulfate solution; and the vanadyl sulfate solution is electrolyzed to obtain a 3.5-valence vanadium electrolyte. According to the method, the vanadium recovery rate can exceed 90%, the prepared vanadium electrolyte is low in impurity content, the technological process is short, emission of waste gas and waste water is reduced, and energy conservation and environment protection are achieved.

The invention discloses a biomass horizontal carbonization furnace waste heat recovery device and method, and relates to the technical field of carbonization furnaces, the biomass horizontal carbonization furnace waste heat recovery device comprises a horizontal carbonization furnace and a cooling bin, a heat insulation pipeline is fixedly installed on the surface of the horizontal carbonization furnace, a material conveying bin is fixedly installed at the other end of the heat insulation pipeline, and a feeding hopper is fixedly installed at the top of the material conveying bin; a spiral blade rotatably penetrates through one surface, far away from the heat insulation pipeline, of the material conveying bin, and comprises a three-way pipe, the three-way pipe fixedly penetrates through the inner wall and the outer wall of the horizontal carbonization furnace, a valve and a hollow frame are arranged on the three-way pipe, the hollow frame is fixedly mounted on the circumferential surface of the material conveying bin, and the hollow frame is fixedly connected with the three-way pipe; moisture in biomass raw materials is evaporated through the preheating device, it is ensured that the carbonization process of the raw materials is more sufficient, the temperature in the material conveying bin is controlled, and the situation that the raw materials are coked too early, and generated kerosene adheres to the interior of the material conveying bin is prevented.

The invention discloses a production device and method for preparing biological aviation kerosene through a hydrodeoxygenation method, the production device for preparing the biological aviation kerosene through the hydrodeoxygenation method comprises a reaction kettle, a stirring assembly is arranged in the reaction kettle, and the stirring assembly is used for stirring a reaction mixture; the stirring assembly comprises a hollow square shaft, a plurality of hollow stirring blades and a driving assembly, and the hollow square shaft is rotationally arranged at the bottom in the reaction kettle; the invention further discloses a production method for preparing the biological aviation kerosene through the hydrodeoxygenation method. The production method comprises the steps of S1, raw material pretreatment; s2, hydrodeoxygenation reaction; s3, separating a product; and S4, rectification. According to the device, hydrogen exhausted from the exhaust holes is sprayed out in all directions, so that the contact area between the hydrogen and raw materials can be increased, the hydrogen reaction is more sufficient and complete, waste is reduced, and meanwhile, the preparation efficiency of the biological aviation kerosene is also improved.

Systems and methods are provided for co-processing plastic waste in a coker as part of an integrated refinery environment that produces kerosene, jet fuel, and / or jet fuel blending components as a product. The co-processing can be performed in a fluidized coker, a delayed coker, or a combination of fluidized cokers and delayed cokers. After coking, hydroprocessing can be performed on one or more portions of the coker effluent that contribute to formation of the kerosene, jet fuel, and / or jet fuel blending component product(s). The hydroprocessing can be used to reduce or minimize the presence of unexpected nitrogen contaminants in the resulting kerosene, jet fuel, and / or jet fuel blending component product(s).

The invention relates to the field of aircraft maintenance, in particular to an intelligent aviation kerosene and bactericide mixed filling device which comprises a shell and an oil conveying pipeline, the oil conveying pipeline penetrates through the shell, and a fuel oil input connector and a fuel oil output connector are arranged at the two ends of the oil conveying pipeline correspondingly; the bactericide distribution bin is communicated with one end of the bactericide conveying pipeline, the other end of the bactericide conveying pipeline is inserted into the oil conveying pipeline and connected with a three-stage impeller with holes, the three-stage impeller with the holes and the oil conveying pipeline are coaxially arranged, and a fuel oil flow sensor is embedded in the oil conveying pipeline and used for detecting the oil amount in the oil conveying pipeline. An electromagnetic valve and an electromagnetic diaphragm metering pump are installed on the bactericide conveying pipeline, a controller is installed in the shell, the controller is electrically connected with the fuel flow sensor, the electromagnetic valve and the electromagnetic diaphragm metering pump, in the refueling process, kerosene and a bactericide can be intelligently controlled to be mixed, and the mixing effect is guaranteed.

The invention provides a dual-fuel ring vortex combustor which comprises an annular structure formed by splicing a plurality of combustors, each combustor comprises a hydrogen pipeline, a gas collection tank and a U-shaped flame tube, at least one hydrogen hole, at least one kerosene nozzle and at least one air hole are formed in each U-shaped flame tube, the hydrogen holes are covered with the gas collection tanks, and the kerosene nozzles are arranged on the gas collection tanks. The hydrogen pipeline is communicated with the hydrogen hole through the gas collection tank. According to the dual-fuel ring vortex combustor, the ignition performance can be improved, combustion at the ignition nozzle can be enhanced, atomization of kerosene is further promoted, and the combustion efficiency and stable flame flowing can be improved; kerosene can be in full contact with hydrogen gas, so that more uniform mixing of double fuels is realized; and the guide plate is cooled, so that the ablation resistance of the high-temperature alloy of the guide plate is improved, and the service life of the high-temperature alloy of the guide plate is prolonged.

The invention discloses a method for separating and extracting rhenium in smelting waste acid, which comprises the following steps: adding hydrogen peroxide into rhenium-containing waste acid for oxidation, adding Na2S for copper precipitation and molybdenum precipitation, acidifying supernate, extracting by adopting an extraction organic phase formed by mixing TOA, sec-octyl alcohol and kerosene, and carrying out chemical reverse extraction on the extraction phase by using ammonia water, and carrying out condensation crystallization and vacuum filtration on the strip liquor to obtain ammonium rhenate solid powder and the like. According to the method, a separation and extraction method of precipitation-extraction-condensation crystallization is adopted, and high-selectivity extraction of the high-valence rhenium compound is carried out through TOA, so that effective extraction of rhenium can be completed only through primary extraction and reverse extraction, the process period of rhenium extraction is effectively shortened, the total yield of rhenium reaches 99% or above, and the method is suitable for industrial production. And the mass fraction of the produced ammonium rhenate product is greater than 99.9%, and the method has the advantages of low process technology cost and easier realization of industrialization.

The invention discloses a mixed waste plastic recovery and conversion reaction system which comprises a waste plastic raw material bin, a spiral feeder, a reaction furnace, a combustion chamber, a condensing device and an oil storage tank. The reaction furnace is sequentially provided with a feeding end, a reaction area and a discharging end, the reaction area comprises a plurality of reaction sections which are connected in series, the reaction sections are sequentially and continuously arranged along the length of a furnace body, and each reaction section is provided with a temperature control device which is independently opened and closed; the discharging end is communicated with a condensing device, and the condensing device is provided with a condensed kerosene outlet and a non-condensed pyrolysis gas outlet; the non-condensing pyrolysis gas outlet is divided into two paths, one path is communicated with the reaction furnace, and the other path is communicated with the combustion chamber. According to the invention, multiple reaction sections are combined and connected in series, multiple reaction mode combinations are provided, and high-value aviation kerosene can be produced. According to the invention, dechlorination can be effectively carried out before pyrolysis, and equipment corrosion, catalyst poisoning, secondary pollution and the like are prevented; according to the invention, the non-condensed gas is recovered for hydrogenation upgrading of products and self-heating of the system, so that energy is saved.

The invention provides a dual-fuel composite pre-cooling engine system based on jet flow / heat exchanger pre-cooling and a using method of the dual-fuel composite pre-cooling engine system, and relates to the field of aircraft engine systems. An air inlet channel, a fuel pump, a precooler, a jet device, an air compressor, a main combustion chamber, a turbine, an afterburner and an exhaust nozzle sequentially form an engine main body in the axial direction. According to the system, the characteristics of jet flow precooling and heat exchanger precooling are combined, liquid ammonia / kerosene dual-fuel layout is adopted, and a cooling working medium can realize conversion of precooling working places through a control valve according to precooling requirements, so that incoming flow air in different flight states is efficiently precooled; and the problems that a heat exchanger is large in precooling weight and flow resistance and a jet device is poor in precooling heat exchange effect are effectively solved. And finally, the system gives consideration to the simple jet flow pre-cooling structure and the high efficiency of heat exchanger pre-cooling, and the pre-cooling effect and the propelling performance of the pre-cooling engine are effectively improved.

The invention discloses a method for recovering germanium from germanium-containing smoke dust, which comprises the steps of leaching, desilicication, germanium extraction and post-treatment, and specifically comprises the following steps: adding a sulfuric acid solution into the germanium-containing smoke dust, carrying out agitation leaching at the temperature of 50-90 DEG C, and carrying out solid-liquid separation to obtain a first-section leaching solution a and a first-section leaching residue b; adding a sulfuric acid solution, stirring and leaching at the temperature of 60-80 DEG C, carrying out solid-liquid separation to obtain a second-stage leaching solution c and second-stage leaching residues d, and adding gelatin or bovine gelatin into the first-stage leaching solution a for desilicication to obtain a germanium-containing solution e and a silicon-containing flocculent precipitate f; extracting the germanium-containing liquid e by adopting 10-30% of 7815, 3-10% of a synergistic extractant A and 60-87% of kerosene to obtain an organic phase g and a water phase h; the organic phase g is washed with a dilute sulfuric acid solution and then subjected to reverse extraction with a sodium hydroxide solution, a reverse extraction solution i and an organic phase j are obtained, a sulfuric acid solution is added into the reverse extraction solution i, hydrolysis is conducted, and germanium concentrate and mother liquor are obtained.

Provided herein are systems and methods for converting CO2 and a reduction gas, such as H2 or a hydrocarbon, to a mixture of paraffins for paraffinic aviation fuel, and also to a mixture of paraffins and aromatics suitable for use as aviation fuel. The systems and methods of the present disclosure provide advantages over previous methods related to increased carbon selectivity, as well as improved catalyst stability and longevity.

To provide a kerosene composition having proper combustion property as well as excellent lubricity and oxidation stability even when isoparaffin-based base materials are included as its main base material.SOLUTION: A kerosene composition is characterized by containing 15-50 vol.% of an isoparaffin-based base material containing sulfur components, isoparaffin, n-paraffin, and aromatic components at specific amounts, respectively, and having a density at 15°C and a distillation range being in specific ranges, respectively, as well as containing 25-45 vol.% of a hydrodesulfurization kerosene base material containing a specific amount of sulfur components and having a density at 15°C and a distillation range being in specific ranges, respectively, and 15-40 vol.% of a high-pressure hydrotreated base material obtained from a hydrotreated oil of a specified raw oil, containing specific amount of sulfur components, and having a density at 15°C and a distillation range being in specific ranges, respectively, and showing a kinematic viscosity at 30°C of a prescribed value or more.SELECTED DRAWING: None

The present invention provides a method for separating molybdenite and chalcopyrite based on surface oxidation, belonging to the technical field of mineral separation. In this method, molybdenite and chalcopyrite are ground finely. The ground materials are taken and added with water and put into the flotation cell of a flotation machine. After adding hydrogen peroxide and stirring, ultrasonic treatment is carried out for 3 - 5 minutes. After the treatment, the pH of the pulp is adjusted with a pH adjuster, collector kerosene and foaming agent MIBC are added and stirred for 1 - 5 minutes, and then air flotation is carried out to obtain concentrate and tailing products. Under the action of an oxidant, the surface of molybdenite is oxidized, and the oxidation products generated on the surface of molybdenite will fall off during ultrasonic treatment. This oxidation product will inhibit the flotation of chalcopyrite but will not inhibit the flotation of molybdenite. This method can achieve the flotation separation of molybdenite and chalcopyrite without using inhibitors, thereby reducing the reagent cost.

The invention discloses a method for synthesizing sustainable aviation kerosene through CO2 hydrogenation in biogas. The method comprises the following steps: taking Fe / Mn-CaO as a CO2 adsorption separating agent, taking NiMoGa ternary liquid metal as a catalyst for methane decarbonization hydrogen production, and taking a metal oxide-molecular sieve as a catalyst for synthesizing aryl aviation kerosene through CO2 hydrogenation. According to the metal oxide-molecular sieve catalyst for synthesizing the aromatic sustainable aviation kerosene through CO2 hydrogenation, a metal oxide (ABO3) with a perovskite structure is synthesized through a sol-gel method, and the metal oxide (ABO3) is physically mixed with a molecular sieve; a in ABO3 is lanthanum, and a B element comprises iron, chromium, cobalt or nickel; the molecular sieve contains ZSM-5 (Zeolite Socony Mobil-5), ZSM-11 (Zeolite Socony According to the oxide catalyst disclosed by the invention, a polydentate chelate is formed by metal nitrate and citric acid, and a special perovskite structure can be formed through simple drying and roasting, so that the oxide catalyst has excellent carburization resistance, and a formed oxygen-containing intermediate is diffused into a zeolite molecular sieve to form aromatic aviation kerosene; the preparation of aryl aviation kerosene from bio-based CO2 hydrogenation is realized.

The present invention relates to the technical field of aviation kerosene production, and particularly to a production method of aviation kerosene, which includes: gasifying and converting low-carbon raw materials to generate conversion gas; obtaining crude syngas through a water washing and dust removal process for the conversion gas; subjecting the crude syngas to acid gas removal treatment through a purification device to obtain purified gas containing carbon monoxide, hydrogen, and carbon dioxide; using clean energy in an electrolyzer to obtain hydrogen and oxygen, storing and compressing the hydrogen separately, and sending the oxygen to a gasification device for gasification reaction; generating Fischer-Tropsch synthesis feed gas by passing the compressed hydrogen and the purified gas through a Fischer-Tropsch reaction device; and generating aviation fuel, gasoline, and diesel by passing the Fischer-Tropsch synthesis feed gas through a green aviation fuel synthesis reactor, a secondary flash evaporator, and a distillation column. By using low-carbon raw materials as raw materials for bio-aviation kerosene, the present invention can reduce the dependence on fossil fuels and increase the production of bio-aviation kerosene, thereby enabling large-scale promotion.

The invention discloses a heavy axle rolling method based on rolling differentiation, which comprises the following steps: S1, axle pretreatment: adopting a two-stage cleaning process, firstly performing high-pressure flushing through kerosene at 60-80 DEG C, then performing double-frequency alternate ultrasonic cleaning, and drying with hot air at 70 DEG C after cleaning, so that the surface roughness Ra of the pretreated axle is less than or equal to 1.6 mu m, and the oil stain residual quantity is less than or equal to 5mg / m < 2 >; s2, three-dimensional modeling and stress partitioning are carried out, an axle digital model is established, and stress simulation is carried out. According to the method, a plastic deformation layer of 0.2 mm-0. 3mm and a residual compressive stress field of which the depth is greater than or equal to 0.5 mm are formed on the surface layer aiming at reinforced rolling of a high-stress area, and the range value is-200MPa to-300MPa, so that the tensile stress in the working process is effectively counteracted, the fatigue life of the axle is prolonged, and the service life of the axle is prolonged. According to the stepped rolling technology, surface defects are eliminated through pre-rolling, a uniform strengthened layer is formed through main rolling, the surface quality is optimized through fine rolling, the overall impact resistance of the axle is improved, and the axle can adapt to the severe working condition of long-term heavy-load running of heavy vehicles.

The invention relates to the technical field of metal material surface modification, in particular to AlCrCuMoNi high-entropy alloy powder with high temperature, wear resistance, corrosion resistance and good heat conduction, a coating and a preparation method thereof.The high-entropy alloy powder with the particle size being 15-45 microns and suitable for thermal spraying is prepared through a mechanical alloying method, and then the high-entropy alloy powder is prepared through an oxygen-kerosene supersonic flame spraying technology; the preparation method comprises the following steps: spraying high-entropy alloy powder on the surface of a key part matrix by taking high-entropy alloy as a matrix, oxygen as a combustion improver, kerosene as a fuel, high-purity nitrogen as a powder feeding carrier gas and air as a cooling medium to prepare an AlCrCuMoNi HEA coating; al, Cr, Cu, Mo and Ni elementary substance powder is subjected to ball milling according to the required molar ratio through a mechanical alloying method, AlCrCuMoNi HEA powder is obtained, the coating is prepared through the hypersonic flame spraying technology, the method is suitable for improving the high-temperature abrasion resistance and hot corrosion resistance of the surfaces of key parts in the industries of energy, metallurgy, chemical engineering and the like, and the service life of boiler pipes is prolonged.

The invention relates to the technical field of aero-engine oil injection control, in particular to an oil injection system assembly for an aero-engine, which comprises an annular oil supply pipe, a main oil pipe, a connecting seat, an air pressure sensor, a mounting seat, a guide pipe, an oil injection head, an aperture adjusting assembly, an oil hole shielding assembly, an end cover, a round rod, a limiting seat and a hydraulic push rod, a penetrating hole is formed in the center of the side wall of the oil spraying head, oil spraying holes distributed in an annular array mode relative to the penetrating hole are further formed in the side wall of the oil spraying head, and the hole diameter adjusting assembly is rotationally connected with the oil spraying head through the penetrating hole. When the flight height of the meteorological monitoring unmanned aerial vehicle changes, the size of the oil injection holes and the opening and closing number of the oil injection holes are sequentially and correspondingly adjusted, and the problems that the monitoring height of the meteorological monitoring unmanned aerial vehicle is frequently increased, the amount of air entering a turbine engine is reduced, and oil injection efficiency is low in the adjusting process of an oil injection pump are solved. Residual aviation kerosene in the oil injection pipe cannot be fully combusted after being sprayed out, and a small amount of aviation kerosene is attached to the combustion chamber.

The invention provides an intelligent control method, device and equipment for an aviation kerosene preparation system, and the method comprises the steps: obtaining various sample data, the various sample data comprises physical property parameters, distillation range distribution parameters and component content parameters of sample oil, and process parameters of the aviation kerosene preparation system; according to the multiple sample data, a long-short-term memory network algorithm and a physical information neural network algorithm, a prediction algorithm model is established, and the prediction algorithm model is at least used for predicting the yield of aviation kerosene of the aviation kerosene preparation system; according to the prediction algorithm model and the multiple sample data, determining the prediction yield of the aviation kerosene in a first preset time period and multiple operation parameters of the aviation kerosene preparation system in the first preset time period; and adjusting the process parameters of the aviation kerosene preparation system according to the predicted yield of the aviation kerosene and the plurality of operation parameters. The method solves the technical problem of unstable aviation kerosene yield in the aviation kerosene preparation process of the aviation kerosene preparation system.

A process for improving yield of kerosene from a renewable feedstock involves directing a to a lead stripper to separate a lead stripper bottoms stream comprising naphtha and higher boiling point range hydrocarbons and a lead stripper overhead stream. The lead stripper bottoms stream is passed to a naphtha recovery column to separate a vapor stream comprising naphtha and water in an overhead stream from a heavy hydrocarbon product stream. The vapor stream is condensed and water is removed to produce a product naphtha stream. Kerosene and diesel boiling point range product streams are separated from the heavy hydrocarbon product stream in a vacuum fractionator.

The present application relates to the technical field of metal material plating, in particular to a kind of γ-TiAl material turbine blade sawtooth crown wear-resistant coating plating method, it includes multi-station special plating device and aviation kerosene oxygen mixed fuel supersonic flame spraying process.Plating device is divided into two kinds of linear arrangement and annular arrangement, respectively realize 15 pieces and 30 pieces of blade one time clamping plating, significantly improve efficiency;Device realizes accurate positioning and non-spraying area protection by positioning block, pressing plate assembly and other structures.Co-Mo-Cr-Si wear-resistant coating is plated by using supersonic flame spraying process, heat input is low, coating is dense, and bonding strength is high;Subsequent grinding processing makes coating surface roughness reach Ra<0.8 μm.The present application solves the problem of high heat input and low construction efficiency in the prior art, and meets the requirements of high precision and high reliability for aeroengine.

The invention relates to the technical field of rectification, and discloses a high-purity isoparaffin efficient rectification upgrading device for aerospace kerosene, which comprises a tank body, the surface of the tank body is fixedly connected with a motor, the output end of the motor is fixedly provided with a rotating rod, the right end of the rotating rod is fixedly connected with a first bevel gear, and the right end of the first bevel gear is fixedly connected with a second bevel gear; a rotating part is rotatably connected to the top end of the inner wall of the tank body, a connecting rod is fixedly connected to the bottom end of the rotating part, a second bevel gear is fixedly connected to the surface of the connecting rod, the second bevel gear is in meshed connection with the first bevel gear, and a rotating cylinder is slidably connected to the surface of the connecting rod. The rotating rod and the first bevel gear are driven by the motor to rotate, so that the second bevel gear and the connecting rod are driven to rotate, and the rotating cylinder and the fixed disc on the surface of the connecting rod are synchronously driven to rotate when the connecting rod rotates, so that the disturbance and mixing effects of gas and liquid phases between tower plates are enhanced, and the gas-liquid mass transfer efficiency is improved.

The invention provides a high-Mach-number boron powder ramjet engine based on air fluidization. The high-Mach-number boron powder ramjet engine comprises a boron powder conveying module and a kerosene conveying module. The boron powder conveying module can convey boron powder to the combustion part; the kerosene conveying module can convey kerosene to the combustion part; and the combustion part is provided with a stable combustion support plate. The problems of boron powder conveying and ignition stable combustion of the high-Mach-number boron powder ramjet engine based on air fluidization are solved, and incoming flow air is directly used as driving gas and fluidizing gas to fluidize boron powder fuel; kerosene is combusted, and injected fluidized air generates a high-temperature low-speed oxygen-enriched area behind the stable combustion support plate, so that removal of an oxide layer on the surface of the boron powder fuel is accelerated, and the combustion effect of the boron powder fuel is improved. The problem that in the prior art, a boron powder fuel conveying system is too complex to be integrated with an engine system is solved, the defects that reliable ignition and stable combustion are difficult to achieve due to the poor ignition combustion characteristic of boron powder fuel are overcome, and high integration of the boron powder fuel conveying system and the engine and ignition stable combustion of the boron powder fuel are achieved.

The utility model discloses an aviation kerosene pipeline filtering device, and belongs to the field of metal processing. An aviation kerosene pipeline filtering device comprises a filter provided with a feeding port and a discharging port and at least two filter elements installed in the filter, and further comprises lantern rings arranged on the outer walls of the filter elements in a sleeving mode, and swing parts for driving the lantern rings to swing in a reciprocating mode are arranged in the filter; due to the arrangement of the swing part, when kerosene flows through the filter, the floating ball rises along with the rising of the kerosene liquid level, the lantern rings on the two sides are driven to slide along the corrugated sliding rail and the sliding groove, a reciprocating swing movement track is formed, flowing of the kerosene is promoted, and the filter element is driven to slightly vibrate. And impurities and particulate matters attached to the surface of the filter element can fall off, so that the smoothness of the filter element is kept, the filtering efficiency is improved, and the automatic cleaning and dredging of the filter element are realized.

The invention discloses a kerosene sealing test clamp and method for a graphite sealing device. The test clamp is mainly composed of a sealing ring, a support, a screw, an extrusion flat plate, a nut, a base and an oil inlet nozzle. A cylindrical protrusion is arranged on the upper end face of the base, a cylindrical blind hole is formed in the top face of the cylindrical protrusion and serves as a cavity for containing the graphite sealing device, external threads are machined on the outer surface of the cylindrical protrusion, an oil liquid flow channel is formed in the bottom face of the cylindrical blind hole, the oil liquid flow channel extends to one outer surface of the base, and an oil liquid connector is formed in the surface of the oil liquid flow channel. The oil inlet nozzle is connected to the oil liquid connector, the sealing ring, the support and the nut are installed on the base, the screw is installed on the support, and the extrusion flat plate is placed between the screw and the cylindrical protrusion. During a sealing test, the requirement of the graphite sealing end face displacement is met by controlling the screw pitch of the screw, and axial sealing of the graphite sealing device is achieved through the nut and the sealing ring. Effectiveness of a graphite sealing test is guaranteed, the activity amount of the end face in the test process is accurately controlled, and the sealing effect is good.

The invention relates to the technical field of biofuels, and discloses an aviation kerosene biological alternative fuel based on multi-objective optimization, which is characterized in that a comprehensive selection index system comprising density, kinematic viscosity, thermodynamic characteristics (lower calorific value and hydrogen-carbon ratio) and molecular weight is established based on a multi-objective optimization model constructed by a genetic algorithm; the invention discloses a biological fuel formula for replacing RP-3 aviation kerosene by optimizing the design of biological alternative fuel components, the biological alternative fuel is prepared from the following components in parts by volume: 70-80 parts of second-generation biodiesel, 10-15 parts of tetrahydrofuran and 7-15 parts of isopropanol, the components are easy to obtain, the production process is simple, and the biological alternative fuel is suitable for large-scale production. The second-generation biodiesel, tetrahydrofuran and isopropanol are used as raw materials, the obtained biofuel has low kinematic viscosity, the low calorific value reaches 43 MJ / kg or above, the physicochemical property of the biofuel is similar to that of RP-3 aviation kerosene, and the biofuel has good substitutability and wide popularization value.