40 results about "Avgas" patented technology

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 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 present invention relates to an aviation gasoline formed by blending (i) an unleaded base fuel having a base MON of at least 94, with (ii) at least one aromatic amine effective to provide the base fuel with a final MON of at least 100.

The subject of the present disclosure is an aviation gasoline composition that is lead-free and free of oxygenated compounds meeting the specifications of the ASTM standard comprising isopentane, isooctane, and (alkyl)aromatics. The aviation gasoline composition according to the disclosure may be obtained simply and economically from a mixture of hydrocarbon bases usually available in a refinery.

The invention provides a lead-free aviation gasoline and a preparation method thereof. The lead-free aviation gasoline is prepared by blending 20-100% of alkanes, 0-86% of arenes, 0-10% of alkenes, 0-20% of nitrogen-containing organic compounds and 0-20% of oxygen-containing organic compounds in percentage by volume together, or prepared by use of a petrochemical refining technology. The alkanes in the lead-free aviation gasoline mainly include isoalkane and cycloalkane, the two of which are low in vapor pressure, appropriate in boiling range, and thus capable of meeting the requirements of the aviation gasoline; the lead-free aviation gasoline is low in all of the content of arenes, the content of alkenes, the content of nitrogen-containing organic compounds and the content of oxygen-containing organic compounds, and thus low in combustion pollution and advantageous for improving the environmental quality of China; besides, the motor octane number of the lead-free aviation gasoline ranges from 90 to 105, and the lead-free aviation gasoline is further high in yield, low in cost and simple in preparation method.

Describe are preferred formulations for Avgas meeting the requirements for use in aircraft, including requirements established under ASTM standards and by the Federal Aviation Administration. In one embodiment, a binary mixture of 1,3,5-trimethyl benzene (mesitylene) and isopentane is used to provide a MON of at least 100, and more preferably at least 102. In other embodiments, the amounts of mesitylene and/or isopentane may be changed, and other fuel components are included. These various Avgas formulations are thereby adjusted to meet a variety of requirements as to octane rating, RVP, cold start, and other fuel characteristics.

Methods are provided for characterizing an aviation gasoline for use in a spark-ignited engine based on analysis methods traditionally used for compression-ignition fuels. For example, an aviation gasoline can be characterized based on a combustion delay for the aviation gasoline, a heat release rate for the aviation gasoline, or a combination thereof. Analyzing an aviation gasoline based on characteristics traditionally used for compression-ignition fuels can allow for distinction between types of aviation gasolines that may appear to be similar under conventional octane tests but that have substantially different performance characteristics.

The invention provides an alkane composition, a 100 # lead-free aviation gasoline composition containing the alkane composition and a production method of the 100 # lead-free aviation gasoline composition, the alkane composition contains C4 alkane, C5 alkane, C6 alkane, C7 alkane, C8 alkane and C9 alkane, and the aviation gasoline composition contains base oil and an additive, the base oil comprises the alkane composition as a blending component A, a blending component B, a blending component C and a blending component D, and the additive comprises methylcyclopentadienyl manganese tricarbonyl. The aviation gasoline composition disclosed by the invention does not contain tetraethyl lead while meeting various index requirements of anti-knock property, evaporability, stability and the like, can reduce pollution generated during combustion, is environment-friendly, and can meet the requirement of people on environmental protection. The octane number of the aviation gasoline composition is 99.6-103, the vapor pressure and the distillation range meet the requirements, the cost is low, the raw materials are simple and easy to obtain, and the preparation method is simple.

The invention discloses a method for directly preparing aviation gasoline and aviation kerosene from polyolefin waste plastics, and belongs to the technical field of resource recycling. According to the method, high-molecular polyolefin waste plastic is taken as a raw material, a bifunctional catalyst composed of noble metal and inorganic solid acid is adopted, coupling of hydrogenation degradation and isomerization reaction of high-molecular-weight polyolefin plastic is realized, preparation of high-value oil from the polyolefin plastic is continuously realized by a one-step method, the conversion rate reaches about 99%, and the the conversion rate of the aviation oil product is as high as 80%. The method has the advantages of mild reaction conditions, simple catalyst preparation process, high activity, high selectivity and good stability, and is suitable for industrial production. The method not only can realize cyclic utilization of resources, but also can alleviate the current environmental pollution problem.

Method and apparatus for environment protection (climate change) from toxic elements and subsidence by existing underground coal seam fires by expansion termination of these fires. The method is based on creating, on the path of or around a burning coal seam fire, a subterranean void-barrier, with non-combustible gases (or fluids) and absence of oxidiser. The void-barrier may be substantially free from combustible material. The void-barrier will prevent further expansion of the existing coal seam fire, and may be created by known methods of coal extraction in gasified form, such as Underground Coal Gasification (USG). By-products from void-barrier creation can be utilized to reduce environmental pollution and for production of useful commercial entities such as gas or liquid fuels like: petrol, diesel, jet fuel, avgas, paraffin or electrical power generation and/or chemicals like CO₂ for enrichment of coal or which may be sold.

The invention provides an aviation gasoline composition capable of being used as No.94 lead-free aviation gasoline and a production method thereof, the aviation gasoline composition contains base oil and an additive, and the base oil contains a blending combination A, a blending component B and a blending component C. The aviation gasoline composition does not contain tetraethyl lead and is environmentally friendly, the motor octane number of the aviation gasoline composition ranges from 94 to 96, the octane number is high, the vapor pressure, the distillation range and other indexes meet the requirements of the ASTM D7547 standard and the ASTM D7592 standard for UL94 # aviation gasoline, and the aviation gasoline composition can be used for most engines used by 100 # low-lead aviation gasoline. The aviation gasoline composition disclosed by the invention has the advantages of few required blending components, wide sources, good fuel performance, low production cost and simple production method.

The invention relates to a lettering and paint embedding method for a thin plate disc-shaped duralumin bottom plate part. The bottom plate part comprises an annular edge plate and a circular truncated cone, and an open bottom hole is formed in the bottom face of the annular edge plate; a plurality of lettering areas are arranged on the plane of the bottom hole; and line carving is performed on the bottom surface of the annular edge plate. The lettering and paint embedding method comprises the following steps that: S1, lettering and line carving are conducted, specifically, the bottom plate part is clamped, lettering contents of different lettering areas are edited, and lettering is conducted on the lettering areas through lettering equipment, line carving is performed on the bottom surface of the annular edge plate, the depth of the lettering and line carving is 0.2-0.3 mm, and the width of the lettering and line carving is 0.3 mm; S2, inspection is performed, specifically, a laser lettering font inspection template is adopted to compare and inspect lettering fonts, and a vernier caliper is adopted to inspect the depth and width of the lettering and line carving; S3, paint embedding is conducted, specifically, a part to be subjected to paint embedding is wiped with aviation gasoline, paint embedding is carried out by adopting C04-42 black alkyd enamel paint, after paint embedding, the part is naturally aired, after being aired, the paint at a non-paint-embedded part is cleaned, and the part is placed in a constant-temperature drying oven to be dried.

An aviation gasoline composition having: from about 70 vol% to about 80 vol% isooctane; from about 5 vol% to about 9 vol% isopentane; from about 10 vol% to about 20 vol% of one or more dialkyl ether; and from about 1 vol% to about 5 vol% of one or more alcohol, from about 0.02. vol% to about 0.07 vol% of one or more octane enhancer such as MMT, and, optionally, one or more additives selected from the group consisting of: antioxidants, anti-icing agents, antistatic additives, corrosion inhibitors, dyes, lubricants, and mixtures thereof, wherein the aviation gasoline has a motor octane number of at least 99.6.

The invention provides an aviation gasoline composition capable of being used as No. 102 lead-free aviation gasoline and a production method thereof, the aviation gasoline composition contains base oil and an additive, and the base oil contains a blending composition A (mesitylene as a main component), a blending component B (C8 alkylate as a main component), a blending component C (C5-C6 alkane as a main component) and a blending component D (limonene as a main component). The aviation gasoline composition contains the blending component D, can significantly increase the octane number, does not contain tetraethyl lead, methyl tert-butyl ether and aromatic amine compounds, and can reduce environmental pollution. The motor octane number of the aviation gasoline is not less than 102, the octane number is high, the vapor pressure, the distillation range and other indexes meet the requirements of the ASTM-D7719 standard on the 102 # aviation gasoline, the production cost is low, the fuel performance is good, the raw materials are wide and easy to obtain, and the production method is simple.