No.94 lead-free aviation gasoline and production method thereof

A technology of aviation gasoline and base oil, which is applied in the petroleum industry, liquid carbon-containing fuel, fuel, etc., and can solve problems such as low octane number, no reference to motor octane number value, and inability to meet the performance requirements of aero-engines, etc.

Active Publication Date: 2021-12-03
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research method octane number of aviation gasoline in this patent document is 97-99, but there is no mention of the motor method octane number specified in the aviation gasoline standard
Moreover, the octane number of 91 unleaded aviation gasoline is low, which cannot meet the performance requirements of most aero engines, and cannot be applied to the piston engines used by most 100LL aviation gasoline

Method used

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  • No.94 lead-free aviation gasoline and production method thereof
  • No.94 lead-free aviation gasoline and production method thereof
  • No.94 lead-free aviation gasoline and production method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0074] In some embodiments, the preparation method of the aviation gasoline composition of the present invention further includes the step of obtaining blending component A. The step of obtaining the blending component A may be: distilling the alkylation reaction product of C4 olefins and isobutane, and obtaining a component whose initial boiling point and final boiling point meet the requirements of the aforementioned blending component A as a blending group Point A. The composition and distillation range of this component can meet the relevant requirements mentioned above. The temperature of the alkylation reaction can be 4-10°C, the pressure can be 0.4-0.45MPa, the alkene ratio can be 8-12:1, and the acid-ene ratio can be 1-1.2:1. The alkylation reaction is carried out in the presence of a catalyst. The catalyst may be an acid, for example, one or more selected from sulfonic acid, hydrofluoric acid, and concentrated sulfuric acid. The molar ratio of catalyst to C4 olefin...

Embodiment 1

[0087]Alkylate modified oil of 64% by mass (see Table 1-1 for its properties), 21% by mass of industrial isopentane (see Table 1-2 for its properties) and 15% by mass m-xylene (see Table 1-2 for its properties) Table 1-3) mix, and then add other various additives according to Table 1-4, after reconciling evenly, obtain aviation gasoline, the property of this aviation gasoline is as shown in Table 1-5 below.

[0088] Table 1-1

[0089]

[0090] Table 1-2

[0091]

[0092] Table 1-3

[0093]

[0094] Table 1-4

[0095]

[0096] Table 1-5

[0097]

Embodiment 2

[0099] Alkylate modified oil of 52% by mass (see Table 2-1 for its properties), 25% by mass of industrial isopentane (see Table 2-2 for its properties) and 23% by mass m-xylene (see Table 2-2 for its properties) Table 2-3) mix, and then add other various additives according to Table 1-4, after reconciling evenly, obtain aviation gasoline, the property of this aviation gasoline is as shown in Table 2-4 below.

[0100] table 2-1

[0101]

[0102]

[0103] Table 2-2

[0104]

[0105] Table 2-3

[0106]

[0107] Table 2-4

[0108]

[0109]

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Abstract

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.

Description

technical field [0001] The invention belongs to the technical field of fuel, and in particular relates to No. 94 unleaded aviation gasoline and a preparation method thereof. Background technique [0002] Aviation gasoline is a high-octane fuel used in aircraft, which needs to have sufficiently high anti-knock performance. At present, it mainly depends on the addition of tetraethyl lead to increase its antiknock performance. The high-octane aviation gasoline on the market basically contains tetraethyl lead, such as the latest industrial production of No. 100 low-lead aviation gasoline (No. 100LL aviation gasoline) , Tetraethyl lead content is limited to 1.2g / kg. However, with the increase of aviation gasoline consumption, the lead emission of aircraft engines increases, and the air pollution caused by it becomes more and more serious. Because tetraethyl lead is highly toxic and volatile, lead-free has always been the goal of the aviation gasoline industry. Unleaded No. 94 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/04
CPCC10L1/04
Inventor 杜文莉隆建钱锋钟伟民杨明磊
Owner EAST CHINA UNIV OF SCI & TECH
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