99 results about "Aviation kerosene" patented technology

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

The application provides a continuous hydrogenation-isomerization method capable of meeting the treatment requirements of biological oils, especially waste oils, using a homogeneous hydrogenation process with strong adaptability to raw materials as a raw material pretreatment process, and matching a high-activity nanometer transition metal sulfide catalyst. On this basis, a catalytic distillation process is used for selective cracking of long-chain alkanes to improve the yield of medium and long-chain alkanes; an ultramicro flow hydrogen gas mixer and a reduced non-noble metal hydrogenation-isomerization catalyst are used to reduce the hydrogen / oil ratio and the energy consumption of the circulating hydrogen system, and to reduce the production cost of the catalyst, so as to finally realize efficient and low-carbon conversion of waste oils, and low-cost and high-selectivity preparation of biological aviation kerosene.

The invention discloses a method for monitoring tail gas emission of an aircraft refueling vehicle, and solves the problem that PM quantitative data acquisition is inaccurate in a complex environment of an airport. The method comprises the following steps: stably sampling and removing aviation kerosene steam through a sampling probe integrating sensing and flow guide adjustment; synchronously detecting and deducting background gas interference; performing secondary dehumidification and constant-temperature pretreatment on the tail gas; the double detection units are linked to collect multi-dimensional data, and a nonlinear interference correction model is constructed through fusion; and adopting an exclusive calibration mode and marking invalid data. The method further comprises the design of wind speed adaptation, condensation backflow prevention, working condition and area label optimization, double-link encryption transmission, safe installation, optical signal compensation, graded maintenance and the like. The method can resist multiple environmental interferences, PM detection errors are controllable, data updating is efficient, and airport safety operation and compliance monitoring requirements are met.

The utility model relates to the technical field of petrochemical engineering, and particularly discloses a cracking tail oil heat recovery system of a slurry bed residual oil hydrogenation device, which comprises a fractionating tower, a fractionating tower bottom pump, an aviation kerosene tower bottom heat exchanger, a debutanizer bottom heat exchanger, an isopentane tower bottom heat exchanger and a tail oil cold feed preheater, the fractionating tower bottom pump, the aviation kerosene tower bottom heat exchanger, the debutanizer bottom heat exchanger, the isopentane tower bottom heat exchanger and the tail oil cold feed preheater are sequentially arranged on the fractionating tower, and a tail oil discharge pipeline is arranged on the tail oil cold feed preheater. The tail oil temperature of the cracking device is reasonably utilized, the heat exchange process is optimized, efficient recovery of tail oil heat is achieved, the potential safety hazard of leakage of a heat exchange system of the isopentane tower is eliminated, temporary shutdown overhaul of the device caused by leakage of a heat exchanger is avoided, meanwhile, effective and stable control over the tail oil temperature is achieved, and the service life of the device is prolonged. The operation cost of tail oil air cooling is saved, and safe and stable operation of a heat exchange system of the device is effectively guaranteed.

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.

The present application relates to the technical fields of chemical synthesis, and discloses a kind of aviation kerosene production process and equipment, production process includes: carbon source gas, hydrogen, circulating gas is sent into main reactor reaction and obtains including hydrocarbon, methanol, CO, water and unreacted gas mixed component a;Mixed component a is sent into cascade reactor and is prepared to obtain including aviation kerosene component, light hydrocarbon component and water mixed component b, wherein light hydrocarbon component includes one or more of C2-C7 light hydrocarbon;Mixed component b is fractionally condensed to collect liquid phase and gas phase, and liquid phase is carried out three-phase separation to obtain aviation kerosene component, light hydrocarbon component and water respectively, aviation kerosene component is hydrotreated, fractionation to obtain aviation kerosene.The present application realizes the step-by-step control of reaction path in carbon source hydrogenation process through the synergistic effect of main reactor and cascade reactor, improves the selectivity of aviation kerosene target product, so that the obtained product meets the 3# aviation kerosene standard requirements in key indicators such as distillation range distribution, aromatic content and low temperature performance.

The application belongs to the technical field of aviation second power system, and discloses an airplane emergency power gas generating system and method based on water enhancement technology, wherein the system adopts fuel oil and high-pressure gas cylinder gas supply to combust in a gas generator, high-temperature and high-pressure gas is generated as the emergency power of the airplane; when the fuel oil and air are mixed and combusted in the gas generator, water is sprayed in the gas generator, water is used as the combustion coolant, and the compressed air amount used by the gas generator after combustion to generate unit gas is reduced. The aviation kerosene and high-pressure air are used as the fuel and oxidant, the fuel system has the advantage of good compatibility with the airplane, the compressed air amount used by the gas generator to generate unit gas is greatly reduced, the working time of the gas generator system is prolonged, the expensive catalyst is not used, and the problems of short service life of the gas generator system and high price of the catalyst of the traditional emergency power system are avoided.

The present application relates to a kind of aero-engine cold start auxiliary staged preheating system and control method, belong to aero-engine starting technical field;The present application is integrated preheating treatment to engine fuel, in-cylinder mixture thermodynamic state (in-cylinder thermal atmosphere before ignition) and lubricating oil by pipeline fuel preheating device, oil outlet preheating device, cylinder sleeve preheating device and lubricating oil heat preservation preheating device, coupling combustion parameter control strategy, according to the temperature gradient of plateau alpine low temperature environment, design four levels of plateau alpine cold start feedback control strategy, so that aviation kerosene pressure combustion engine provides and implements reasonable preheating scheme according to different low temperature low pressure environment outside in plateau alpine condition, can effectively solve the problem that aviation kerosene pressure combustion engine is difficult to cold start, starting time is long, engine parts wear seriously and cold start stability is poor and the like in plateau alpine environment.

The invention discloses a filtering device suitable for aviation kerosene and a filtering method thereof, and belongs to the technical field of aviation fuel purification and filtration. The cylinder shell, the annular supporting ribs and the main filter material form a filter cylinder, kerosene penetrates through the intervals of the annular supporting ribs from outside to inside and gathers in the central positioning shaft to be led out, in a quasi working state, the filter assembly is disassembled and transversely inserted into an inner cavity of the filter element socket, one end of the filter assembly is fixed in the inner cavity of the filter element socket, and the locking piece is driven to amplify thrust through the force amplifier; the pressing rod linearly extrudes the filter element, the threaded transmission sleeve is rotated through the spiral driving rod, so that the piston pressing disc compresses the cotton core at a constant speed, residual oil is recovered from the bottom liquid drainage hole in the axial direction, and the cotton core is taken out after squeezing; the filter element of the same cylinder is not replaced, only the inner-end fine filter layer is replaced by the reducing fine filter layer with a smaller inner diameter, the through-flow area is suddenly reduced, the local flow speed is increased, the surface of a main filter material is reversely washed, and impurities fall off; the reducing step generates secondary high pressure difference, the fiber gap is further compressed, and the precision is improved.

The present application relates to reactor equipment technical field, disclose green fluidized bed reactor for aviation kerosene production, including: cylinder, the bottom of cylinder is equipped with material inlet, the top of cylinder is equipped with material outlet;Distribution plate, multiple are arranged along the axial direction of cylinder, distribution plate is equipped with through hole, multiple distribution plates divide the inside of cylinder into multiple fluidized bed cavities;Solid communication pipe, it is arranged through distribution plate, solid communication pipe communicates upper and lower adjacent two layers fluidized bed cavities, and solid communication pipe is used to make the solid material in upper layer fluidized bed cavity into lower layer fluidized bed cavity;Gas communication pipe, it is arranged outside cylinder, and the both ends of gas communication pipe are connected with different layers fluidized bed cavities;Gas-solid separator, it is arranged in cylinder and is close to material outlet.The present application solves the technical bottleneck that bed temperature is difficult to control uniformly, and local overheating or low temperature zone is prone to appear in related technology through the collaborative design of multiple distribution plates, solid communication pipe and gas communication pipe.

The utility model discloses distillation equipment for biological aviation kerosene production, which relates to the technical field of distillation equipment and comprises an equipment main body, an electric push rod is fixedly connected to the outer wall of the equipment main body, and one end of the electric push rod is fixedly connected with a lifting plate slidably connected with the outer wall of the equipment main body. The outer wall of the lifting plate is rotationally connected with a pulling rod, and one end of the pulling rod is rotationally connected with a connecting rod. By arranging the pull rod, when auxiliary aviation kerosene production is carried out through distillation equipment, in order to improve the synchronous protection effect on a distillation head and the shielding protection effect on the top of a collecting box under the condition that an oil drum is switched for use, the lifting plate ascends through rotation of the pull rod; and a connecting rod fixedly connected with a limiting rod is driven to slide, so that a first protection plate moves to the position below the distillation head, a second protection plate moves to the top of a collection box, the situation that kerosene leaks and is wasted is reduced, and the aviation kerosene production efficiency of the distillation equipment is improved.

According to the method for preparing the green fuel with the biomass as the raw material and the green fuel preparation system, biomass utilization, hydrogen production through water electrolysis and methanol synthesis are coupled, the overall material and energy utilization efficiency can be improved, and the emission of carbon dioxide is reduced. The method comprises the following steps: (1) feeding biomass into a biomass gasification unit for gasification reaction to obtain crude synthesis gas; (2) feeding the crude synthesis gas into a gas purification unit for treatment; (3) feeding the purified synthesis gas into a decarburization unit for treatment to obtain carbon dioxide and decarburized synthesis gas; feeding carbon dioxide and hydrogen into a methanol synthesis unit to react to generate methanol; (4) mixing the decarbonized synthesis gas with hydrogen to adjust the hydrogen-carbon ratio of the synthesis gas, and feeding the adjusted synthesis gas into a Fischer-Tropsch synthesis unit to obtain a Fischer-Tropsch synthesis product; and (5) feeding hydrocarbons with more than C5 into a cracking isomerization unit to be in contact with hydrogen for hydro-conversion, and fractionating to obtain a gasoline component and an aviation kerosene component.

The invention relates to a method for preparing an aviation kerosene component through ethylene oligomerization, which comprises the following steps of: contacting an ethylene-containing raw material with an oligomerization catalyst to carry out oligomerization reaction to obtain an oligomerization product; separating the oligomerization product to obtain a gas product and a liquid product, and carrying out distillation separation on the liquid product to obtain a C5-C9 fraction and a C9 + fraction; wherein the molecular sieve in the oligomerization catalyst comprises an FER structure molecular sieve and at least one molecular sieve with a skeleton structure selected from MFI, MEL, FAU, BEA, MTT, MTW, MWW, MOR, TON and AEL. The oligomerization product obtained by the invention mainly comprises C5 + mixed hydrocarbon, and the conversion rate of ethylene and the yield of C9 + component in the product are obviously improved.

The invention discloses a biological aviation kerosene and diesel oil hydrogenation coupling system and a hydrogenation process. The hydrogenation coupling system comprises a biological aviation kerosene hydrogenation system and a diesel oil hydrogenation system; and a gas phase outlet of a thermal high-pressure separator of the diesel hydrogenation system is respectively connected with a material inlet pipeline of a hydrogen mixer I, a material inlet pipeline of a hydrogen mixer II and an outlet pipeline of a heat exchanger II of the biological aviation kerosene hydrogenation system. The hydrogenation process comprises the following steps: (1) mixing a biological aviation kerosene raw material with hot high-pressure separated gas, and reacting in the hydrodeoxygenation reaction unit; (2) mixing effluent of the hydrodeoxygenation reaction unit with hot high-pressure separated gas, and enabling the mixture to enter an isomerization reaction unit to be subjected to an isomerization reaction; and (3) mixing the effluent of the isomerization reaction unit with the hot high-pressure gas, cooling, and carrying out steam stripping fractionation to obtain the biological aviation kerosene product. The invention solves the problem of sulfur loss of the hydrodeoxygenation catalyst, reduces the destructive effect of water vapor on the catalyst, prolongs the operation cycle of the device, simplifies the process flow, and reduces the investment of the device.

The invention belongs to the field of unmanned aerial vehicle refueling, and particularly relates to an unmanned aerial vehicle refueling system and method. In order to reduce the occupied space of the refueling system and ensure that mixed fuel oil is evenly mixed, the unmanned aerial vehicle refueling system comprises a lubricating oil container, a refueling butt joint mechanism and an aviation kerosene container communicated with the refueling butt joint mechanism through a main pipeline, and a metering pumping mechanism is arranged on the main pipeline. The lubricating oil container is located above the main pipeline and communicated with the main pipeline through an auxiliary pipeline, and a flow valve is arranged on the auxiliary pipeline. The communicating position of the auxiliary pipeline and the main pipeline is located on the downstream of the metering pumping mechanism, and a pipeline stirrer is arranged on the portion, located between the communicating position of the auxiliary pipeline and the main pipeline and the refueling butt joint mechanism, of the main pipeline. The invention further correspondingly provides an unmanned aerial vehicle refueling method. In the invention, the gravity and the kinetic energy of the oil are reasonably utilized, so that only one metering pumping mechanism is utilized for refueling, the occupied space is reduced, and the oil is mixed twice to ensure uniform mixing.

This invention provides a core-shell structured catalyst and method for biomass-to-aviation kerosene production, relating to the technical field of solid waste resource utilization. The core-shell structured catalyst of this invention comprises, from the inside out, an active core, a transition layer, and a functional shell. The active core includes a support and a Ru-Ni alloy supported on the support. The transition layer includes a nitrogen-doped carbon layer. The functional shell includes a composite molecular sieve formed from W2C and ZSM-5. This invention solves the technical problems of traditional catalysts, such as single function, low hydrodeoxygenation efficiency, low product selectivity, insufficient stability, and harsh reaction conditions. Compared with traditional biomass hydrocracking catalysts (single-metal catalysts), it improves biomass conversion rate and aviation kerosene fraction selectivity, extends catalyst life, and reduces production costs, meeting environmental protection and resource utilization requirements.

The invention discloses an intelligent sampling system for measuring micro-water content of aviation kerosene. The system comprises an automatic sampler, a data line and an intelligent control terminal, the intelligent control terminal comprises a box body, a touch display screen, a controller and a power supply; the automatic sampler comprises a housing, a motor, a bracket, a limiting seat, a piston, a sealing ring and a needle cylinder. The method has the advantages that automatic extraction of aviation kerosene samples, rapid detection of micro-water content, visual display of detection results and data storage can be achieved, and the method is easy and convenient to operate, rapid in detection, accurate in result, convenient and rapid in data management, good in sealing performance, high in cost effectiveness and the like; the problems of oil leakage, unsmooth extraction, low precision and the like in the prior art are effectively solved.

The invention discloses a dual-mode low-emission combustion chamber matched with a standing vortex evaporation tube and a method. The combustion chamber comprises a multi-channel diffuser, an inner casing, an outer casing, a flame tube and a high-energy ignition electric nozzle. The flame tube comprises an outer ring wall plate, an inner ring wall plate, a single-concave-cavity structure, a cap cover, a cross flame supporting plate and M * N evaporation pipes. The trapped vortex combustion chamber is combined with two low-emission advanced combustion organization technologies of RQL and LPP, different combustion modes are adopted in different states or different areas in the whole flight cycle so as to adapt to the oil-gas ratios in different states, and the pollutant emission in the whole working condition range is reduced. And meanwhile, the M * N evaporation pipes can also be used for solving the problem that multiphase fuel oil is difficult to supply normally under the aviation kerosene phase state change caused by fuel oil regenerative cooling.

This invention belongs to the field of catalyst technology, specifically relating to a multi-metal-doped cerium oxide catalyst and its preparation and application. The catalyst comprises a γ-Al₂O₃ support and an active component supported thereon, wherein the chemical formula of the active component is Ni. a Fe b Ru c Co d Ce1 a b c d O 2‑δ Wherein, 0.05≤a≤0.1, 0.04≤b≤0.06, 0.04≤c≤0.06, 0≤d≤0.06, and a+b+c+d≤0.2. The catalyst is prepared by solution impregnation, by preparing a metal salt solution and impregnating it on a γ-Al2O3 support to obtain a sol with a complexing agent, which is then aged, dried, and calcined in stages. The catalyst is used in the steam reforming reaction of aviation kerosene (n-dodecane simulation), and can achieve 100% catalytic conversion at 700 °C, without deactivation after 100 h of continuous operation, exhibiting low-temperature activity and anti-carbon deposition performance; wherein Ni 0.05 Fe 0.05 Ru 0.05 Co 0.05 Ce 0.8 O 2‑δ When reformed gas drives a tubular solid oxide fuel cell, the power density reaches 830.90 mW / cm³. 2 It operates stably for 100 hours without significant degradation. The process of this invention is simple and cost-controllable, and it is applicable to the fields of hydrogen production from aviation kerosene reforming and SOFC coupled power generation.

The invention relates to the technical field of coal chemical industry, and discloses aerospace kerosene component oil and a preparation method thereof. The method comprises the following steps: (1) heating coal-based Fischer-Tropsch wax to 60-140 DEG C, conveying the heated coal-based Fischer-Tropsch wax to a reactor loaded with an isomerization catalyst, pressurizing hydrogen to 2.5-10 MPa, injecting the pressurized hydrogen into the reactor, and carrying out hydrocracking; (2) carrying out gas-liquid separation on the hydrocracking product, conveying the separated liquid-phase component into a normal-pressure rectifying tower for normal-pressure rectification, and cutting out an aviation kerosene fraction or an aerospace kerosene fraction from the middle of the tower; (3) heavy components cut out from the bottom of the normal-pressure rectifying tower continue to enter a reduced-pressure rectifying tower to be subjected to reduced-pressure rectifying, and a lubricating oil base oil fraction is cut out from the middle of the tower. The aviation and aerospace kerosene component oil prepared by the method can well meet the requirements of cold regions and high-altitude flight on oil fluidity.

The invention discloses a fuel oil test device for an aircraft engine main shaft bearing of an unmanned aerial vehicle. The fuel oil test device comprises a test platform, a test base, an axial loading device, a radial loading device and a rotation driving device. The test base is fixed on the test platform, the radial loading device and the rotation driving device are respectively arranged at two sides of the test base, and the axial loading device is arranged above the test base. A test cavity is arranged in the test base, a to-be-tested bearing is arranged in the test cavity, and an aviation kerosene through hole is formed in the cavity; a rotating shaft of the rotation driving device extends into the test cavity and is sleeved with the bearing. A heating sleeve is embedded in the test cavity corresponding to the position of the bearing and sleeves the outer ring of the bearing; and the test cavity is provided with a gas inlet and a gas outlet for inputting and discharging flame-retardant gas. The device can simulate the working state of a bearing fuel oil environment, guarantees safety through temperature control of the heating sleeve and introduction of flame-retardant gas, and is compact in structure and accurate and reliable in test result.

This invention discloses a dual-fuel turbojet engine with chemical regenerative braking and fuel cell power generation, relating to the field of aero-engine technology. The engine includes an air intake, compressor, combustion chamber, turbine, exhaust nozzle, chemical regenerator, air regenerator, liquid ammonia storage tank and pump, solid oxide fuel cell, and aviation kerosene storage tank and pump. Its core features are: the chemical regenerator utilizes waste heat from the exhaust nozzle wall to catalytically decompose liquid ammonia to produce hydrogen; the air regenerator uses the same heat source to heat air drawn from the compressor; the generated hydrogen and high-temperature air respectively enter the anode and cathode of the solid oxide fuel cell for power generation. This invention significantly improves onboard power generation capacity and overall engine energy utilization efficiency by recovering exhaust waste heat to drive an independent fuel cell power generation system, without extracting power from the engine main shaft, while reducing the impact on the core engine's propulsion performance, thus combining high economic efficiency and high environmental friendliness.

A process for dimerizing and oligomerizing olefins to distillate fuels in which the oligomerized product is subjected to hydrocracking and hydroisomerization in a single reactor to convert heavier oligomers to jet fuel range oligomers. A jet fuel product stream is removed from the side of a stripping tower and a heavy drag stream is produced from the bottom of the stripping tower to ensure that the end boiling point specification is met.

The invention relates to the technical field of petrochemical engineering detection, in particular to a method and a system for rapidly detecting mixing of diesel oil and aviation kerosene based on a near infrared spectrum. The method comprises the following steps: collecting aviation kerosene and diesel oil standard samples covering different producing areas and batches, and collecting spectral data by adopting a near-infrared spectrometer in a constant-temperature environment; a partial least square method is combined with a data weighting optimization strategy, and a quantitative analysis model covering the full mixing proportion is constructed; collecting 1-5mL of an oil sample to be detected, directly putting the sample into a portable near-infrared detection instrument, scanning in an environment of-10 DEG C to 50 DEG C to obtain a spectral signal, and inputting the signal into the optimized quantitative model for data analysis; outputting the diesel fuel and aviation fuel mixing proportion of the to-be-tested sample by the model; the system comprises a spectrum acquisition module, a model construction module, a signal analysis module and a mixing proportion judgment and result output module. The aim of quickly, accurately and nondestructively detecting the aviation kerosene on a transportation site is fulfilled.

This invention discloses an effective method for reducing nitrogen content in the production of sustainable aviation fuel feedstock, belonging to the field of sustainable aviation fuel production technology. Through a tiered processing approach, high-nitrogen feedstock is first pretreated with microwave-assisted plasma to efficiently break the C-N bonds of macromolecular nitrogen heterocycles. Then, pre-denitrification is performed using an AI-intelligent optimized adsorption bed filled with amino-functionalized modified MOF adsorbent. Subsequently, in a multi-field coupled microchannel reactor, mild hydrogenation is carried out for deep denitrification under the synergistic effects of ultrasound, electric field, and near-infrared photothermal treatment. Finally, the fraction is separated and purified using a membrane separation-distillation coupled system to obtain aviation kerosene fraction with a nitrogen content of less than 1 ppm, achieving a total yield of up to 92%. This invention also converts the desorbed and enriched nitrogen resources into high-purity acetonitrile through electrochemical synthesis. This method overcomes the limitations of traditional high-temperature, high-pressure hydrogenation refining, achieving ultra-deep denitrification under mild conditions, significantly reducing energy consumption and catalyst coking rate, while simultaneously realizing high-value conversion of nitrogen resources.

This disclosure relates to a catalyst for the direct production of aviation kerosene from carbon dioxide and hydrogen, its preparation method, and its application. Based on the total weight of the catalyst, the catalyst comprises: 10-50% by weight of an active component, 0.05-15% by weight of an auxiliary component, and the balance being a support. The active component includes Co; the auxiliary component is selected from one or more transition metals and alkali metals; the support includes TiO2; and the contents of the active component and auxiliary component are in the form of metal oxides. The catalyst provided by this disclosure exhibits high activity, high selectivity for the target product, and good catalyst stability.

This invention provides a special lubricating oil for multi-fuel spark-ignition two-stroke engines used in unmanned aerial vehicles (UAVs) and its preparation method, belonging to the field of lubricating oil technology. The special lubricating oil for multi-fuel spark-ignition two-stroke engines for UAVs comprises, by weight percentage: base oil, 66-81 wt%; additives, 15-20 wt%; and diluent, 4-14 wt%. The base oil includes hydrocarbon-based oil, polyisobutylene, and synthetic esters, wherein the hydrocarbon-based oil is a mixture of 70-85 wt% Group III hydrogenated mineral oil and 15-30 wt% Group IV hydrocarbon synthetic oil. The additives include a composite detergent-dispersant, a composite anti-adhesion detergent, a friction-reducing and anti-wear agent, an antioxidant, an octane number improver, and a compounding agent, wherein the octane number improver is N-methylaniline. The diluent is aviation kerosene.

The invention relates to the field of Fischer-Tropsch synthesis prepared aviation kerosene fraction catalysts. A catalyst for preparing aviation kerosene fraction through Fischer-Tropsch synthesis is a cobalt-based catalyst of a sandwich structure, an inner core of the catalyst is an amorphous silicon-aluminum composite oxide with the molar ratio of SiO to AlO being 20: 1-150: 1, an intermediate layer of the catalyst is active cobalt nanoparticles, a shell of the catalyst is an acidic molecular sieve, and the acidic molecular sieve is one of SAPO-11, ZSM-22 or Silicalite-1. The invention also relates to a preparation method and application of the catalyst. Product distribution limitation is broken through, and high aviation kerosene selectivity is achieved.

The application discloses a method for preparing polycyclic aviation kerosene from lignin-derived phenolic compounds and formaldehyde. The lignin-derived phenolic compounds and formaldehyde are polymerized into aviation kerosene precursors under the action of solid acid, and then the aviation kerosene precursors are subjected to hydrodeoxygenation through a bifunctional catalyst to obtain polycyclic aviation kerosene. Compared with traditional chain aviation kerosene, the polycyclic aviation kerosene has high density and high calorific value, and can be used as a substitute for traditional aviation fuel. The catalyst and raw materials used in the application are rich in sources, low in price and easy to separate; and the whole production process is simple to operate.

The application discloses a kind of flying deck aviation kerosene pool fire heat radiation prediction methods under the action of ambient wind, specifically comprising: S1, existing experimental data are collected;S2, flying deck aviation kerosene pool fire numerical simulation model is established;S3, numerical simulation data are output by numerical simulation model;S4, dimensionless processing and normalization processing are carried out to numerical simulation data;S5, neural network model is established using the data group after processing in step S4;S6, predict the heat radiation of flying deck aviation kerosene multi-scale pool fire under the action of ambient wind.The application overcomes the difficulty of obtaining aviation kerosene pool fire heat radiation sample data;Avoid aviation kerosene pool fire experiment and numerical simulation, reduce the prediction cost;Reduce the dimension of data set, improve the neural network training efficiency;Realize the multi-scale prediction of aviation kerosene pool fire heat radiation under the action of ambient wind, open up a new way for predicting aviation kerosene pool fire heat radiation.