582 results about "Kerosene" patented technology

A process and system for upgrading an organic feedstock including providing an organic feedstock and water mixture, feeding the mixture into a high-rate, hydrothermal reactor, wherein the mixture is rapidly heated, subjected to heat, pressure, and turbulent flow, maintaining the heat and pressure of the mixture for a residence time of less than three minutes to cause the organic components of the mixture to undergo conversion reactions resulting in increased yields of distillate fuels, higher-quality kerosene and diesel fuels, and the formation of high octane naphtha compounds. Hydrocarbon products are cooled at a rate sufficient to inhibit additional reaction and recover of process heat, and depressurizing the hydrocarbon products, and separating the hydrocarbon products for further processing. The process and system can include devices to convert olefinic hydrocarbons into paraffinic hydrocarbons and convert olefinic byproduct gas to additional high-octane naphtha and / or heavier hydrocarbons by one of hydrogenation, alkylation, or oligomerization.

The invention discloses a method for preparing biological aviation kerosene by hydrogenation of waste grease, which comprises the following steps: mixing pretreated waste grease and coal tar to form mixed raw oil, reacting under the continuous action of a catalyst I and a catalyst II to obtain generated oil, and introducing the generated oil into a high-pressure separator for separation to obtain the biological aviation kerosene. And carrying out high-pressure steam stripping on the separated product, passing the stripped product oil through a hydroisomerization reaction unit, and then carrying out normal-pressure fractionation to obtain the biological aviation kerosene. According to the preparation method, firstly, raw materials are improved, pretreated waste grease is adopted, the reaction efficiency can be improved through the pretreated waste grease, in the process that H2S iO3 is adopted for modifying Cu / gamma-Al2O3, and H2S iO3 auxiliaries and active components are introduced, high-temperature roasting can cause damage to a lamellar structure on the surface of a gamma-A2O3 carrier, and in the process, high-temperature roasting can cause damage to the surface of the gamma-A2O3 carrier; the adjacent pore structures of the carrier material are combined to form a larger pore diameter, and part of the pore structures of the catalyst can be filled, so that the conversion efficiency is increased.

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 provides an ammonia / kerosene dual-fuel precooling engine and a fuel cell power generation system, and belongs to the technical field of aviation systems. The problems of poor variable working condition performance of an engine, difficulty in matching of a gas compressor and a turbine, low working efficiency, fuel waste and the like due to the fact that working of the gas compressor is limited by overhigh total temperature of flying incoming flow air under the high Mach number of an aircraft are solved. According to the invention, the electric energy generated by the solid oxide fuel cell system is supplied to the aircraft load and the motor, and the motor drives the secondary gas compressor to do work in a manner of coaxial installation with the secondary gas compressor, so that the previous single-pole compression is changed into multi-stage compression. A dual-fuel pre-cooling propulsion method is adopted, liquid ammonia and aviation kerosene are selected as dual fuels of the system, the heat sink requirement for incoming flow air pre-cooling can be met, the fuel heat value requirement needed when the aircraft flies at the high Mach number can also be met, and therefore stable and safe flight of the aircraft at the hypersonic speed becomes possible.

The invention relates to a novel liquid rocket pressurization system combining self-generated pressurization and gas cylinder heating pressurization. The novel liquid rocket pressurization system comprises a liquid oxygen storage tank, a kerosene storage tank, a self-generated pressurization pipeline, a gas cylinder heating pressurization pipeline, a first heater and a third heater. The self-generating pressurizing pipeline is communicated with the liquid oxygen storage tank and is communicated with a thrust chamber head oxygen head cavity of the first engine, and liquid oxygen is led out of the thrust chamber head oxygen head cavity of the first engine, then is subjected to heat exchange with turbine waste gas through the first heater and then is conveyed to the liquid oxygen storage tank; and the gas cylinder heating and pressurizing pipeline is communicated with the kerosene storage tank, and pressurized gas exchanges heat with waste gas of the turbine through the third heater and then is conveyed to the kerosene storage tank. According to the application, self-pressurization of the low-temperature liquid oxygen storage tank is realized, and heating and pressurization of the kerosene storage tank are also realized, so that the pressurization efficiency of the kerosene storage tank is greatly improved.

The utility model provides an atmospheric and vacuum five-tower distillation device with an energy-saving effect, which comprises a primary distillation tower, a negative pressure tower, an atmospheric tower and a vacuum tower, the negative pressure tower comprises a first negative pressure tower and a second negative pressure tower, the top of the first negative pressure tower and the top of the second negative pressure tower are respectively connected with a first negative pressure tower reflux device and a second negative pressure tower reflux device; a negative pressure tower reboiler is arranged at the middle lower part of the negative pressure tower I, and the pressure of the negative pressure tower I is higher than that of the negative pressure tower II; the two negative pressure towers are additionally arranged between the primary tower and the atmospheric tower, vaporized gasoline and kerosene components can be separated in time, the irreversible degree of heating and cooling is reduced, and the purpose of saving energy is achieved; due to negative pressure operation of the first negative pressure tower and the second negative pressure tower, the operation temperature in the two negative pressure towers is reduced, utilization of low-grade heat of the system is facilitated, it is guaranteed that all gasoline components and part of kerosene components of crude oil are completely extracted before entering the atmospheric towers, energy consumption is reduced, the heat utilization rate is increased, and the crude oil separation precision is improved.

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 present invention relates to the technical field of reaction kettles, particularly to a glyphosate isopropylamine salt aqueous solution production reaction kettle, which comprises a stirring tank, the top end of the stirring tank is provided with a support frame, the inner wall of the stirring tank is provided with a stirring cooling mechanism, and the outer wall of the support frame is provided with a liquid storage tank. Through cooperation of a second stirring piece, a storage shell, a communicating pipe, a first pull rod and a first hydraulic plug, in the rotary stirring process of the second stirring piece, cooling kerosene directly dissipates heat of reactants, and the situation that the temperature of the reactants exceeds 80 DEG C, and consequently the quality of the reactants is reduced is avoided; in the prior art, the temperature of the stirring tank is reduced firstly and then the temperature of the reactant is reduced, so that the steps of reducing the temperature of the stirring tank, reducing the cooling time and avoiding quality reduction caused by overlong heat dissipation time of the reactant are omitted, meanwhile, when cooling is not needed, cooling kerosene enters the liquid storage tank through the storage shell and air pressure, and the cooling effect is improved. And the cooling effect of the device is improved, and the cooling time is shortened.

The present invention discloses a method and device for detecting aviation kerosene concentration based on a composite sensor, which has the characteristics of high response speed, high sensitivity, low anti-interference and accurate and reliable detection data. A portable warning device for kerosene concentration based on a composite sensor is designed, which includes the following detection steps: step 1, synchronous detection of kerosene concentration by using a sensor detection unit, realizing synchronous detection of kerosene vapor by a semiconductor sensor module and an infrared sensor module; step 2, determination and output of the result of the sensor detection unit by using a composite determination unit, realizing rapid response to kerosene vapor and obtaining high-precision detection data; step 3, the integrated warning unit realizes real-time monitoring and warning of kerosene concentration information through data transmission with the composite determination unit. The present invention integrates composite sensing design and determination technology, and combines the warning unit to realize a portable warning device applied to aviation kerosene transportation channels.

The invention discloses an aviation kerosene production method based on vinasse waste, and belongs to the technical field of kerosene preparation, and the aviation kerosene production method comprises the following steps: pretreatment: screening and cleaning vinasse, removing impurities and water, then crushing the cleaned vinasse into particles, and drying and baking by using drying equipment; pyrolyzing: feeding the pretreated vinasse into a pyrolyzing furnace for pyrolyzing; gas purification: purifying the separated gas to remove sulfides and nitrides in the gas; fischer-Tropsch synthesis reaction: introducing the purified gas into a Fischer-Tropsch synthesis reactor to form hydrocarbon molecules; separating products: separating hydrocarbons in different boiling point ranges; product refining: further processing the separated hydrocarbon products; waste treatment: solid carbon black generated in the pyrolysis process is recycled. The device provided by the invention can reduce the dependence of existing aviation kerosene production on traditional fossil fuel, saves energy, reduces carbon emission, and is beneficial to sustainable development.

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 an incineration pretreatment system for radioactive combustible waste, and relates to the technical field of radioactive waste treatment.The system is characterized in that a drying unit is used for dehydrating wet waste to form dry material flow, a crushing unit is used for crushing the dry waste into small sizes, and a mixing unit is used for mixing liquid waste with diesel oil or kerosene; after the viscosity and the heat value are adjusted, feeding into a pyrolysis combustion unit; the hot melting compression unit is used for compressing the dry and wet waste into waste bags; the storage unit is used for providing a waste bag temporary storage area and feeding waste bags into the feeding unit; the feeding unit is used for feeding waste bags into the pyrolysis combustion unit; the pyrolysis combustion unit is used for carrying out pyrolysis combustion on the waste bag and the combustible liquid waste mixture; and the tail gas treatment unit is used for purifying tail gas generated by pyrolysis combustion. The system provided by the invention can be compatible with various common dry and wet combustible wastes and combustible liquid wastes of nuclear facilities, corresponding pretreatment procedures are carried out, and formed waste bags and waste material flows meet incineration treatment requirements.

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.

Jet boiling range compositions are provided that include at least a portion of an isoparaffinic blend component, along with a method for making such a blend component. The highly isoparaffinic nature of the blend component can allow the isoparaffinic blend component to be used in combination with both conventional / mineral jet fuel boiling range fractions as well as non-traditional feeds (such as Fischer-Tropsch fractions) to form jet fuel fractions and / or jet fuel blending component fractions.

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).

A method and apparatus for refining waste plastic pyrolysis oil has an effect of converting the waste plastic pyrolysis oil into high value-added hydrocarbon oil having a high content of naphtha and kerosene, lowering a content of impurities such as chlorine, nitrogen, oxygen, and metal of the hydrocarbon oil, operating under milder process conditions, having excellent process efficiency, and having high process stability to be able to continuously produce refined oil.

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.

Jet boiling range compositions are provided that include at least a portion of an isoparaffinic blend component, along with a method for making such a blend component. The highly isoparaffinic nature of the blend component can allow the isoparaffinic blend component to be used in combination with both conventional / mineral jet fuel boiling range fractions as well as non-traditional feeds (such as Fischer-Tropsch fractions) to form jet fuel fractions and / or jet fuel blending component fractions.

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.

The utility model discloses a kerosene atomizing device of a supersonic speed thermal spraying spray gun, which relates to the technical field of spray gun atomizing devices and comprises a female head, a male head is arranged in the female head, a conical body is arranged in the male head, a thread is fixed on the inner wall of the male head, a thread groove matched with the thread is arranged on the outer wall of the conical body, and the inner wall of the conical body is provided with a groove matched with the thread. The conical body is in threaded connection with the inner wall of the male head, a flow channel is formed between the conical body and the male head, and a dismounting assembly is arranged in the female head. Oil enters from the left side inlet, the shape of the oil outlet is limited into a pressurized outlet in the limited space of the inner conical body and the male head mist outlet hole, high-speed oil is limited and pressurized through the outlet, and therefore the atomization effect is achieved, and the inner conical body is connected with the shell through the rapid threads. An oil liquid flowing channel is arranged in the thread, so that the oil liquid can smoothly reach the mist outlet hole, and the male head can be quickly connected through the arranged disassembly and assembly assembly.

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.