509 results about "Aviation fuel" patented technology

The invention discloses a hydrocracking catalyst and a preparation method thereof. The catalyst comprises hydrogenation active metals and a carrier containing modified Y molecular sieve, alumina and amorphous aluminium silicon, wherein, the Y molecular sieve is prepared by the following method: the Y molecular sieve undergone hydro-thermal treatment by mixed water solution of aluminium salt and acid is adopted; the performance of the Y molecular sieve is as follows: specific surface is 800m<2>/g-900m<2>/g, total aperture volume is 0.40ml/g-0.50ml/g, relative crystallinity is 90%-130%, cell parameter is 2.434-2.440nm, aluminium silicon mol ratio is 20-100, infrared acid volume is 0.3-0.8mmol/g, the mol ratio of acid B and acid L is above 7.0, sodium oxide content is less than or equal to 0.05wt%. The catalyst prepared by the invention has the advantages of high catalytic activity, good target product selectivity and can produce heavy naphtha, aviation fuel and diesel fuel, and the like, with high yield and good quality.

The invention relates to a manufacturing mode of environment-friendly and energy-saving M15_M85 methanol diesel oil. The methanol diesel oil is composed of diesel oil, methanol, and additives. The methanol diesel oil is prepared with operations under normal temperatures and normal pressures. The invention discloses a plurality of common additives used for preparing methanol diesel oil in modern times. If explosives and aviation fuels are appropriately utilized, methanol defalcated heat value can be well compensated. The theory is tentatively considered as a gaseous detonation theory. The additives can be selected from nitric acid esters, nitrates, nitro compounds, non-aromatic compounds, peroxides, and the like.

Lead-free aviation fuel composition with a MON greater than 100, made up of a major component of a fuel made from Avgas and a minor component of at least two compounds from the group of esters of at least one mono-or poly-carboxylic acid and at least one mono- or polyol, anhydrides of a least one mono- or poly-carboxylic acid, preferably aromatic ethers at a level of at least 5% w/w and ketones at a level of more than 10% w/w.

The present invention relates to hydrocarbons and particularly to the manufacture of hydrocarbon components suitable as aviation fuels or jet fuels and as blending stocks for aviation fuels. The process comprises the stages, wherein in the first stage an oil feed of biological origin and hydrogen gas are subjected to conditions sufficient to effect hydrodeoxygenation in the presence of a hydrodeoxygenation catalyst to yield n-paraffins;

in the second stage the n-paraffins and hydrogen gas are subjected to conditions sufficient to effect isomerisation in the presence of an isomerisation catalyst to yield isoparaffins and separating fractions; and

recycling the fraction boiling at a temperature above 200° C. under atmospheric pressure obtained from the second stage to reisomerisation, where isomerisation is effected in the presence of an isomerisation catalyst.

The invention relates to a synthetic route of a hydrocarbon fuel with high density and high volumetric calorific value by using a lignocelluloses-based platform chemical compound as a raw material and completely independent of fossil energy. A liquid fuel obtained by the method can be used in various aircrafts or used as an additive to raise combustion performance of aviation fuel. The method is divided into two parts: 1) under the promotion action of an acid/base catalyst, cyclopentanone (furfural selective hydrogenation product) is subjected to an aldol self-condensation reaction to synthesize unsaturated organic compounds with C10 and C15 polycyclic structures; and 2) a metal loaded A/X catalyst is used to carry out a one-step hydrodeoxygenation and hydrogenation reaction on products generated from the step 1 under low-temperature solvent-free conditions, so as to obtain polycyclic hydrocarbon fuel with carbon number being 10 and 15. The liquid fuel has high density (C10: 0.92g/cm<3>; C15: 1.12g/cm<3>), can be used to effectively raise carrying energy of an aircraft and reduce fuel consumption rate, and meets requirements of high navigational speed, large load and long range.

The present invention provides fully renewable engine fuels derived completely from biomass sources. The fully renewable engine fuel is comprised of one or more low carbon number esters, one or more pentosan-derivable furans, one or more aromatic hydrocarbon, one or more C₄-C₁₀ straight chain alkanes derivable from polysaccharides, and one or more bio-oils. In addition, the fuel may contain triethanolamine. Such a lower octane renewable fuel may be utilized, for example, in automobile fuel, 100 LL aviation fuel applications, and turbine engine applications. These ethanol-based, fully renewable fuels may be formulated to have a wide range of octane values and energy, and may effectively be used to replace 100LL aviation fuel (known as AvGas), as well as high octane, rocket, diesel, and turbine engine fuels.

The present invention provides fully renewable engine fuels derived completely from biomass sources. In one embodiment the fully renewable engine fuel is comprised of one or more low carbon number esters, one or more pentosan-derivable furans, one or more aromatic hydrocarbon, one or more C₄-C₁₀ straight chain alkanes derivable from polysaccharides, and one or more bio-oils. In addition, the fuel may contain triethanolamine. Such a lower octane renewable fuel may be utilized, for example, in automobile fuel, 100 LL aviation fuel applications, and turbine engine applications. These ethanol-based, fully renewable fuels may be formulated to have a wide range of octane values and energy, and may effectively be used to replace 100 LL aviation fuel (known as AvGas), as well as high octane, rocket, diesel, and turbine engine fuels. In another embodiment, there is provided a synthetic high octane aviation fuel comprising isopentane and mesitylene, and process of producing same from a biomass.

The invention relates to an integrated testing system for aviation fuel accessories. The integrated testing system comprises an electric control cabinet, a mechanical operating platform, an integrated pump station, a flow proportion testing platform, a pneumatic testing system and a fuel testing system, wherein the mechanical operating platform is connected with a pressurizing oil delivery gas storage tank through the pneumatic testing system; the integrated pump station is connected with the fuel testing system through an oil delivery pipeline; the pneumatic testing system is connected with the fuel testing system through a pneumatic pipeline; the flow proportion testing platform is connected with a pressure refueling joint testing oil tank; and the electric control cabinet is electrically connected with the mechanical operating platform, the integrated pump station, the flow proportion testing platform, the pneumatic testing system, the fuel testing system, the pressurizing oil delivery gas storage tank and the pressure refueling joint testing oil tank. The integrated testing system can perform performance test on all accessories of an aircraft fuel system, is high in integrity,convenient to maintain, compact in structure, small in occupation area and low in cost and expenditure, and is in accordance with specific using environment and support conditions under the field condition of an aviation equipment support army.

A filter element (10) is provided which can be used to remove microsize contaminant particles (i.e., about 0.5 μm to about 25.0 μm) from aviation fuel. The filter element (10) includes a cylindrical pleated filter media (14) and an exoskeleton support structure (16) supporting the filter media (14). The filter media (14) has a pleat density of about eight to about thirteen pleats per inner diameter inch and is formed only from cellulose-fiber-free and woven-mesh-free layers. The exoskeleton support structure (16) is a screen which is thermally bonded to the pleats' peaks in such a manner that the filter media (14) is sufficiently supported without conventional endoskeleton support layers.

The invention discloses a method for preparing biological aviation fuel by using litsea cubeba kernel oil, comprising the following steps of: (1) refining the litsea cubeba kernel oil; (2) introducing the refined litsea cubeba kernel oil into a fixed-bed hydrogenation reaction device and sequentially carrying out hydrogenation and deoxygenation reaction and isomerization reaction; (3) collecting liquid-phase components through a condenser; (4) distilling and collecting distillate with the temperature of 150-280 DEG C; and (5) refining the collected distillate through a fiber liquid membrane-composite adsorption unifying device and a dielectric field refining device to obtain the biological aviation fuel meeting the aviation fuel specification. By using the method, the obtained biological aviation fuel contains no sulfur and arene and is good in quality, high in cleanliness and environment-friendly.

An enhanced Fischer-Tropsch process for the synthesis of sulfur free, clean burning, hydrocarbon fuels, examples of which include syndiesel and aviation fuel. Naphtha is destroyed in a syngas generator and recycled as feedstock to an Fischer-Tropsch (FT) reactor in order to enhance the production of syndiesel from the reactor. The process enhancement results is the maximum production of formulated syndiesel without the formation of low value by-products.

The invention relates to a method for production of a diesel oil fraction and an aviation fuel fraction by use of animal and plant oils and fats, and the method comprises the following steps: a) performing refining processing on the animal and plant oils and fats; b) performing catalytic hydrogenation and deoxidation to obtain saturated linear alkanes and propane; c) performing hydroisomerization and hydrocracking processing to obtain an alkane material flow with higher branched chain degree; d) separating to obtain liquid hydrocarbons and gaseous hydrocarbons with the boiling point within the boiling point range of diesel oil, aviation fuels and naphtha; e) directly collecting the diesel oil fraction as a product, or cycling in whole or in part to continue isomerization and cracking reaction to increase production of the aviation fuel fraction; and f) mixing propane gaseous hydrocarbon and naphtha for steam reforming hydrogen production reaction, separating and purifying the obtained hydrogen to enter into a circulating hydrogen system; the method is used in the production of the renewable diesel oil and aviation fuels with excellent combustion performance and cold flow performance, and meanwhile efficient utilization of by-products and in-system supplement of hydrogen consumption can be realized.

Embodiments of the present invention relate generally to fuel tanks for aviation, and particularly to construction of rigid tank walls that have been found useful in absorbing energy of a magnitude expected during a crash. In some aspects, the rigid tank wall construction includes particular materials, such as a thermoplastic resin matrix. In some aspects, the rigid tank wall construction includes a particular arrangement of reinforcing fibers, such as a twill weave pattern.

The invention discloses a method for preparing high-quality fuel oil from inferior crude oil. The inferior crude oil enters first and second reaction zones of a catalytic conversion reactor in turn to contact a catalytic conversion catalyst and respectively perform primary reaction and secondary reaction, and after a reaction product and a spent catalyst are subjected to gas-solid separation, the spent catalyst is stripped and scorched in turn and is returned to the reactor for recycling; the reaction product is separated to obtain propylene, light fuel oil, catalyzed wax oil and other products, wherein the catalyzed wax oil enters a hydrocracking device and is separated to obtain products such as gasoline, an aviation fuel, diesel oil, hydrocracked tail oil and the like; and the hydrocracked tail oil is circulated to the first reaction zone of the catalytic conversion reactor and/or other catalytic conversion devices for further reaction to obtain a desired product, namely the light fuel oil, and a byproduct, namely the propylene. By the method, a diesel cetane number is improved.

Compositions that are resistant to hydraulic fluid and aviation fuel contain sulfur-containing prepolymers and solvent-resistant organic fillers. The compositions are useful in aerospace sealant applications.

The invention relates to a catalyst for preparing aviation kerosene components through one-step hydrodeoxygenation cracking isomerization of grease and a preparation method of the catalyst. The catalyst is mainly used for the process of preparing new-generation ultra-clean aviation fuel oil substitution components through one-step catalytic hydrogenation of grease model compounds, grease and derivatives of the grease. The catalyst provided by the invention is loading noble metal/composite solid acid carrier catalyst which is composed of 0.2-5.0% of Pd, 5-85% of a bata molecular sieve, 10-94.8% of Al2O3. With the adoption of the catalyst, the grease and the grease model compounds can be converted into the biological aviation kerosene components (C8-C16) through hydrogenation, deoxygenation, cracking and isomerization. The catalyst obtained by the preparation method has the advantages of high activity, high selectivity, low hydrogen consumption and the like, and has great significance in promoting development of biological aviation kerosene and reduction of carbon emission; in evaluation for the catalytic activity of the catalyst, the hydrodeoxygenation conversion rate of grease is 100%, and the yield of the aviation kerosene components is 72.3%.

The invention provides a method for extraction of unsaturated fatty acid from oil-containing microalgae and preparation of aviation fuels. The method includes: 1) subjecting microalgae to crushing and wall breaking to obtain microalgal powder particles and adding an entrainer, extracting the unsaturated fatty acid in the microalgal powder particles by a supercritical CO2 extraction technique to obtain mixed oil and algal residue; 2) conducting separation and enrichment on the mixed oil extracted in step 1) to obtain unsaturated fatty acid and residual oil; and 3) performing thermal cracking on the algal residue obtained in step 1) to obtain pyrolytic bio-oil, then mixing the pyrolytic bio-oil with the residual oil, and performing a hydrogenation treatment to obtain a kerosene-containing main product and a byproduct containing gasoline and diesel. According to the method, the unsaturated fatty acid extraction rate can reach 80-95%, and the total extraction rate of oil is 70-90%. The obtained kerosene ingredient can reach the standard of aviation kerosene.