Aviation gasoline composition, aviation gasoline and preparation method thereof

Abstract

The invention provides an aviation gasoline composition, aviation gasoline and a preparation method thereof, and relates to the field of aviation fuel oil. The aviation gasoline composition provided by the invention comprises petroleum-based alkylated gasoline, a component A, a component B and a component C. The component A comprises C4-C7 alkane, the component B comprises C8 isoparaffin, and the component C comprises C7-C9 aromatic hydrocarbon. The aviation gasoline composition provided by the invention can be used for obtaining 95 # lead-free aviation gasoline under the condition of not containing any substances such as metal, oxide, nitride, sulfide and the like, and the fraction is more continuous, safer and more environment-friendly in the combustion process.

Description

Technical Field

[0001] This invention relates to the field of aviation fuel oil, specifically to an aviation gasoline composition, aviation gasoline, and a method for preparing the same. Background Technology

[0002] Aviation gasoline, also known as aviation piston engine fuel, is mainly used in aircraft equipped with reciprocating piston engines, such as armed helicopters, drones, and primary trainer aircraft in the military field, as well as agricultural aircraft, weather aircraft, and exploration aircraft in the general aviation field.

[0003] Existing aviation gasoline typically requires tetraethyl lead to increase the octane rating, and the raw materials inevitably contain sulfur. Chinese patent CN115074161B discloses "Aviation Gasoline Composition, Aviation Gasoline and Preparation Method Thereof," where the aviation gasoline composition mainly includes different amounts of C4-C10 alkanes and additives (including tetraethyl lead), resulting in an aviation piston engine fuel grade of 100LL. Chinese patent CN115707761A discloses "A 95-octane Coal-Based Aviation Gasoline Composition and Preparation Method Thereof," where the aviation gasoline grade is also 95, but the coal-based aviation gasoline composition mainly includes coal-based reformate, coal-based reformate topping oil, coal-based naphtha, petroleum-based alkylated gasoline, and tetraethyl lead.

[0004] With increasing societal emphasis on environmental protection and safety, and stricter requirements for environmental quality assurance, the replacement of leaded fuels with unleaded fuels for aviation piston engines will become an inevitable trend.

[0005] Therefore, there is a need to develop a more environmentally friendly, safe, lead-free, and sulfur-free aviation gasoline. Summary of the Invention

[0006] Based on the above analysis, the present invention aims to provide an aviation gasoline composition, aviation gasoline and its preparation method, in order to solve the technical problems of existing aviation gasoline containing lead or sulfur, which is unsafe and environmentally unfriendly.

[0007] The objective of this invention is mainly achieved through the following technical solutions:

[0008] In a first aspect, the present invention provides an aviation gasoline composition comprising petroleum-based alkylated gasoline, component A, component B, and component C, wherein component A comprises C4-C7 alkanes, component B comprises C8 isoalkanes, and component C comprises C7-C9 aromatics.

[0009] As a specific embodiment of the present invention, the aviation gasoline composition comprises, by total weight of the aviation gasoline composition: component A: 3wt%-10wt%, petroleum-based alkylated gasoline: 25wt%-45wt%, component B: 46wt%-70wt%, and component C: 2wt%-14wt%.

[0010] As a specific embodiment of the present invention, the aviation gasoline composition comprises, by total weight of the aviation gasoline composition: component A: 4wt%-8wt%, petroleum-based alkylated gasoline: 30wt%-35wt%, component B: 50wt%-60wt%, and component C: 3wt%-10wt%.

[0011] As a specific embodiment of the present invention, based on the total weight of component A, the mass percentage of C5 isoalkanes in component A is greater than or equal to 95.0 wt%.

[0012] As a specific embodiment of the present invention, based on the total weight of component B, the mass percentage of C8 isoalkanes in component B is greater than or equal to 99.7 wt%.

[0013] As a specific embodiment of the present invention, petroleum-based alkylated gasoline includes C4-C12 alkanes.

[0014] As a specific embodiment of the present invention, the total amount of C4-C12 alkanes in the petroleum-based alkylated gasoline is greater than or equal to 99.86 wt% based on the total weight of the petroleum-based alkylated gasoline.

[0015] As a specific embodiment of the present invention, the mass percentage of C8 isoalkanes in the petroleum-based alkylated gasoline is 70.0 wt%-72.0 wt% based on the total weight of the petroleum-based alkylated gasoline.

[0016] As a specific embodiment of the present invention, based on the total weight of component C, the content of C8 aromatics in component C is greater than or equal to 98.5 wt%, and the content of C9 aromatics is ≤0.01 wt%.

[0017] As a specific embodiment of the present invention, component C comprises, by total weight, 98.5 wt% - 99.26 wt% of C8 aromatic hydrocarbons.

[0018] As a specific embodiment of the present invention, the C8 aromatic hydrocarbon comprises, by weight of component C, 20.0 wt%-30.0 wt% p-xylene, 50.0 wt%-60.0 wt% m-xylene, 10.0 wt%-20.0 wt% o-xylene, with the balance being ethylbenzene.

[0019] In a second aspect, the present invention provides an aviation gasoline, comprising the aviation gasoline composition and additives.

[0020] In one specific embodiment of the present invention, the additive includes an antioxidant.

[0021] In one specific embodiment of the present invention, the antioxidant is selected from at least one of 2,6-di-tert-butyl-p-cresol, 2,4-dimethyl-6-tert-butylphenol, and 2,6-di-tert-butylphenol.

[0022] Thirdly, the present invention provides a method for preparing the aviation gasoline, comprising: mixing the aviation gasoline composition and additives to obtain aviation gasoline.

[0023] Beneficial effects:

[0024] The aviation gasoline composition provided by this invention can produce 95-octane unleaded aviation gasoline without any metals (especially lead), oxides, nitrides, sulfides, or other substances. Its combustion process is more continuous and safer and more environmentally friendly. Detailed Implementation

[0025] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0026] In this invention, C5 alkane refers to an alkane containing five carbon atoms, including n-alkanes and isoalkanes, but excluding cycloalkanes; similarly, C8 alkane refers to an alkane containing eight carbon atoms, including n-alkanes and isoalkanes, but excluding cycloalkanes.

[0027] In this invention, C8 aromatic hydrocarbons refer to aromatic hydrocarbons containing eight carbon atoms.

[0028] In this invention, non-aromatic hydrocarbons refer to hydrocarbons other than aromatic hydrocarbons, including: alkanes, cycloalkanes, alkenes, etc.

[0029] To achieve the above objectives, this invention provides an aviation gasoline composition, aviation gasoline, and a method for preparing the same. By improving and enhancing the composition of refinery feedstocks, a 95-octane unleaded aviation piston engine fuel product can be obtained without containing any metals (especially lead), oxides, nitrides, sulfides, or other substances.

[0030] In a first aspect, the present invention provides an aviation gasoline composition comprising component A, petroleum-based alkylated gasoline, component B, and component C, wherein component A comprises C4-C7 alkanes, component B comprises C8 isoalkanes, and component C comprises C7-C9 aromatics.

[0031] It should be noted that the aviation gasoline composition provided by the present invention can produce 95-octane unleaded aviation gasoline without containing any metals (especially lead), oxides, nitrides, sulfides, or other substances. Its combustion process has more continuous distillation and is safer and more environmentally friendly.

[0032] As a specific embodiment of the present invention, the aviation gasoline composition comprises, by mass percentage, the following components: component A: 3wt%-10wt%, petroleum-based alkylated gasoline: 25wt%-45wt%, component B: 46wt%-70wt%, and component C: 2wt%-14wt%.

[0033] Preferably, the aviation gasoline composition comprises: component A: 4wt%-8wt%, petroleum-based alkylated gasoline: 30wt%-35wt%, component B: 50wt%-60wt%, and component C: 3wt%-10wt%.

[0034] As a specific embodiment of the present invention, based on the total weight of component A, the content of C5 isoalkanes in component A is greater than or equal to 95.0 wt%.

[0035] In one specific embodiment of the present invention, the C5 isoalkane in component A is preferably isopentane.

[0036] As a specific embodiment of the present invention, based on the total weight of component A, component A comprises: C4 alkanes: 0.39wt%-4.13wt%, C5 alkanes: 95.53wt%-99.61wt% (of which, C5 isoalkanes are greater than or equal to 95.0wt%, and C5 n-alkanes: 0.19wt%-0.58wt%), C6 alkanes: 0wt%-0.2wt%, and C7 alkanes: 0wt%-0.14wt%.

[0037] It should be noted that, based on the total weight of component A, component A contains:

[0038] C5 isoalkanes are greater than or equal to 95.0 wt%, such as 96, 96.5, 97, 97.5, 98, 98.5, 99, 99.5 wt%, etc.;

[0039] C5 n-alkanes: 0.19wt%-0.58wt%, for example 0.2, 0.3, 0.4, 0.5wt%, etc.;

[0040] The total content of C5 isoalkanes and C5 n-alkanes is 95.53 wt% to 99.61 wt%.

[0041] It should be noted that the addition of component A can adjust the vapor pressure of aviation gasoline, keeping it within the safe operating range of 27.0 kPa to 48.0 kPa. However, the amount of this component should also be controlled. Adding more than 10 wt%, while beneficial to vapor pressure, will result in an excessively low initial boiling point, exceeding the requirement of an initial boiling point above 40°C. Adding less than 3 wt% will cause the vapor pressure to fall outside the safe operating range of 27.0 kPa to 48.0 kPa.

[0042] In one specific embodiment of the present invention, component A can be directly processed from a light C5 separation and refining unit of a certain department of Sinopec Zhenhai Refining & Chemical Co., Ltd. After C5 separation, it is distilled off from the top of a C5 isomeric separation tower. Specifically, the top temperature of the C5 isomeric separation tower is 55-65℃, the top pressure is 0.5-0.6MPa, the feed temperature is 55-65℃, the feed rate is 10-15 t. / h, and the bottom temperature is 75-85℃. Preferably, the top temperature of the isomeric separation tower is 60.0℃, the pressure is 0.55MPa, the feed temperature is 60.0℃, the feed rate is 12 t. / h, and the bottom temperature is 80.0℃.

[0043] As a specific embodiment of the present invention, the petroleum-based alkylated gasoline includes C4-C12 alkanes. Based on the total weight of the petroleum-based alkylated gasoline, the total amount of C4-C12 alkanes is greater than or equal to 99.86 wt%, the mass percentage of C8 isoalkanes is 70.0 wt%-72.0 wt%, and the total amount of C4-C12 olefins and C4-C12 cycloalkanes is less than or equal to 0.14 wt%.

[0044] As a specific embodiment of the present invention, the C8 isoalkane in petroleum-based alkylated gasoline is preferably isooctane.

[0045] As a specific embodiment of the present invention, the petroleum-based alkylated gasoline, by weight, comprises: 6.0 wt%-7.0 wt% C4 n-alkanes, 0.2 wt%-0.3 wt% C4 isoalkanes, ≤0.01 wt% C4 olefins, 4.0 wt%-5.0 wt% C5 isoalkanes, 5.0 wt%-6.0 wt% C6 isoalkanes, 4.0 wt%-5.0 wt% C7 isoalkanes, and 70.0 wt%-72.0 wt% C8 isoalkanes. %, C8 alkenes ≤0.01wt%, C9 n-alkanes 0.1wt%-0.5wt%, C9 isoalkanes 3.0wt%-4.0wt%, C9 cycloalkanes ≤0.01wt%, C10 n-alkanes ≤0.1wt%, C10 isoalkanes 1.0wt%-2.0wt%, C10 cycloalkanes ≤0.01wt%, C11 isoalkanes 3.0wt%-4.0wt%, C11 cycloalkanes ≤0.1wt%, C12 isoalkanes 0.1wt%-0.2wt%.

[0046] It should be noted that the petroleum alkylated gasoline used as the base oil for the fuel provided in this invention, compared with ordinary gasoline fractions, is free of aromatics, sulfur, and nitrogen, and has a relatively high octane number. Furthermore, petroleum alkylated gasoline can make the product fractionation more continuous.

[0047] As a specific embodiment of the present invention, the petroleum-based alkylated gasoline can be directly sourced from gasoline produced by a unit of Sinopec Zhenhai Refining & Chemical Co., Ltd., which has a high content of C8 isoalkanes. The outlet bottom temperature of the alkylated gasoline is 140℃-146℃, preferably 143℃-145℃.

[0048] As a specific embodiment of the present invention, component B contains: C8 isoalkanes ≥ 99.7 wt%, and other hydrocarbons ≤ 0.3%.

[0049] In one specific embodiment of the present invention, the C8 isoalkane in component B is preferably isooctane.

[0050] In this invention, component B can be a commercially available analytical grade isooctane reagent.

[0051] It should be noted that the addition of component B can increase the motor octane number of the fuel, so that the motor octane number of the fuel provided by the present invention is greater than 95.0.

[0052] As a specific embodiment of the present invention, based on the total weight of component C, the content of C8 aromatics in component C is greater than or equal to 98.5 wt%, and the content of C9 aromatics is ≤0.01 wt%.

[0053] It should be noted that the main components of component C are C7-C9 aromatics. If component C contains small amounts of other non-aromatic components, these are also within the scope of protection of this invention. Generally, C7-C9 aromatics account for more than 98.9 wt% of the mass of component C.

[0054] As a specific embodiment of the present invention, based on the total weight of component C, component C comprises: 0.42wt%-0.69wt% of C7 aromatics, 98.5wt%-99.26wt% of C8 aromatics (of which, p-xylene is 20.0wt%-30.0wt%, m-xylene is 50.0wt%-60.0wt%, o-xylene is 10.0wt%-20.0wt%, and the balance is ethylbenzene), 0.32wt%-1.08wt% of non-aromatic impurities, and ≤0.01wt% of C9 aromatics.

[0055] It should be noted that the addition of component C can adjust the distillation range of aviation gasoline, enabling this product to meet the requirements for a 90% boiling point and final boiling point, and also giving the product good fractional continuity. Specifically, C9 aromatics should be ≤0.01wt%. Excessive C9 aromatics will cause the final boiling point to approach the control target of 180℃, which is detrimental to the product.

[0056] It should be noted that, based on the total weight of component C, component C contains:

[0057] p-xylene 20.0wt%-30.0wt%, for example, 21, 22, 23, 24, 25, 26, 27, 28, 29wt%, etc.;

[0058] m-Xylene 50.0wt%-60.0wt%, for example, 51, 52, 53, 54, 55, 56, 57, 58, 59wt%, etc.;

[0059] o-xylene 10.0wt%-20.0wt%, for example, 11, 12, 13, 14, 15, 16, 17, 18, 19wt%, etc.;

[0060] The balance is ethylbenzene, wherein the total of p-xylene, m-xylene, o-xylene and ethylbenzene meets the C8 aromatic hydrocarbon content range of 98.5wt%-99.26wt%.

[0061] In one specific embodiment of the present invention, component C can be directly obtained from the top product of the C8 aromatics separation tower in an aromatics unit of Sinopec Zhenhai Refining & Chemical Company. The C8 aromatics separation tower has a feed rate of 30-50 t / h, a feed temperature of 230-240℃, a top temperature of 233-237℃, a top pressure of 0.6-0.7 MPa, a bottom pressure of 0.7-0.8 MPa, and a bottom temperature of 260-270℃. Preferably, the C8 aromatics separation tower has a feed rate of 40 t / h, a feed temperature of 233.2℃, a top temperature of 235.4℃, a top pressure of 0.65 MPa, a bottom pressure of 0.76 MPa, and a bottom temperature of 268.77℃.

[0062] In a second aspect, the present invention provides an aviation gasoline comprising the above-mentioned aviation gasoline composition and additives.

[0063] As a specific embodiment of the present invention, the additive includes at least one of antioxidants, antistatic agents, etc.

[0064] As a specific embodiment of the present invention, the antioxidant may be selected from at least one of 2,6-di-tert-butyl-p-cresol, 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butylphenol, more preferably 2,6-di-tert-butyl-p-cresol.

[0065] Thirdly, the present invention provides a method for preparing aviation gasoline, comprising: mixing the aviation gasoline composition with additives to obtain aviation gasoline.

[0066] As a specific embodiment of the present invention, the method for preparing aviation gasoline includes:

[0067] Step 1: Mix the above components A, petroleum alkylated gasoline, components B, and components C;

[0068] Step 2: Add additives to the mixture obtained in Step 1 and mix to obtain aviation gasoline.

[0069] It should be noted that the product of this invention has undergone repeated verification by the laboratories of Sinopec Zhenhai Refining & Chemical Branch and Sinopec Petrochemical Research Institute, and has been sent to the Testing Center of the Second Research Institute of the Civil Aviation Administration of China for testing and bench testing. All product quality indicators meet the technical requirements for No. 95 aviation piston engine fuel products in GB1787-2018. Bench test results from the Second Research Institute of the Civil Aviation Administration of China show that the aviation gasoline provided by this invention has the advantages of being cleaner, having less carbon buildup, more stable quality, being reliable, and environmentally friendly.

[0070] The following detailed description of preferred embodiments of the present invention illustrates the principles of the invention and is not intended to limit the scope of the invention.

[0071] Example 1

[0072] In a first aspect, this embodiment provides an aviation gasoline composition, wherein the mass content of each component is as follows:

[0073] Component A: 6 wt%; Petroleum-based alkylated gasoline: 31 wt%; Component B: 60 wt%; Component C: 3 wt%;

[0074] The composition of component A is as follows: C4 alkanes 2.88 wt%, C5 alkanes 97.11 wt% (of which, C5 isoalkanes are 96.83 wt% and C5 n-alkanes are 0.28 wt%), C6 alkanes 0.01 wt%, and C7 alkanes 0.00 wt%. Component A originates from the top feed of the iso- and n-alkanes separation tower in a light C5 separation and refining unit of Sinopec Zhenhai Refining & Chemical Co., Ltd. The iso- and n-alkanes separation tower has a top temperature of 60.0℃, a pressure of 0.55 MPa, a feed temperature of 60.0℃, a feed rate of 12 t. / h, and a bottom temperature of 80.0℃.

[0075] The composition of petroleum-based alkylated gasoline is as follows: C4 n-alkanes 6.46 wt%, C4 isoalkanes 0.29 wt%, C4 olefins 0.01 wt%, C5 isoalkanes 4.55 wt%, C6 isoalkanes 5.13 wt%, C7 isoalkanes 4.36 wt%, C8 isoalkanes 70.39 wt%, C8 olefins 0.01 wt%, C9 n-alkanes 0.32 wt%, C9 isoalkanes 3.25 wt%, C9 cycloalkanes 0.01 wt%, C10 n-alkanes 0.1 wt%, C10 isoalkanes 1.24 wt%, C10 cycloalkanes 0.01 wt%, C11 isoalkanes 3.57 wt%, C11 cycloalkanes 0.1 wt%, and C12 isoalkanes 0.2 wt%. The petroleum-based alkylated gasoline is sourced from gasoline produced by Sinopec Zhenhai Refining & Chemical Co., Ltd., and the outlet temperature of the alkylated gasoline is 143℃.

[0076] Component B: Analytical grade isooctane reagent, isooctane content is 99.8 wt%.

[0077] Component C: 0.51 wt% C7 aromatics, 99.10 wt% C8 aromatics (including 26 wt% p-xylene, 57 wt% m-xylene, 14 wt% o-xylene, and 2.1 wt% ethylbenzene), 0.39 wt% non-aromatic impurities, and 0 wt% C9 aromatics. Component C originated from the overhead feed of a C8 aromatics separation tower in an aromatics unit of Sinopec Zhenhai Refining & Chemical Co., Ltd.; the C8 aromatics separation tower had a feed rate of 40 t / h, a feed temperature of 233.2℃, a tower top temperature of 235.4℃, a tower top pressure of 0.65 MPa, a tower bottom pressure of 0.76 MPa, and a tower bottom temperature of 268.77℃.

[0078] Secondly, this embodiment provides a method for preparing aviation gasoline, comprising:

[0079] Step 1: Mix the above components A, petroleum alkylated gasoline, components B, and components C;

[0080] Step 2: Add 10 mg / L of antioxidant 2,6-di-tert-butyl-p-cresol to the mixture obtained in Step 1, and mix to obtain aviation gasoline.

[0081] The aviation gasoline was tested, and the data is shown in Table 1:

[0082] Table 1. Aviation gasoline test data from Example 1

[0083]

[0084] Example 2:

[0085] This implementation is basically the same as Example 1, except that the mass content of each component in the aviation gasoline composition is as follows: Component A: 6 wt%; Petroleum-based alkylated gasoline: 29 wt%; Component B: 53 wt%; Component C: 12 wt%;

[0086] The aviation gasoline was tested, and the data are shown in Table 2.

[0087] Example 3:

[0088] This implementation is basically the same as Example 1, except that the mass content of each component in the aviation gasoline composition is as follows: Component A: 5 wt%; Petroleum-based alkylated gasoline: 37 wt%; Component B: 51 wt%; Component C: 7 wt%;

[0089] The aviation gasoline was tested, and the data are shown in Table 2.

[0090] Example 4:

[0091] This implementation is basically the same as Example 1, except that the mass content of each component in the aviation gasoline composition is as follows: Component A: 3 wt%; Petroleum-based alkylated gasoline: 44 wt%; Component B: 46 wt%; Component C: 7 wt%;

[0092] The aviation gasoline was tested, and the data are shown in Table 2.

[0093] Example 5:

[0094] This implementation is basically the same as Example 1, except that the mass content of each component in the aviation gasoline composition is as follows: Component A: 6 wt%; Petroleum-based alkylated gasoline: 32 wt%; Component B: 56 wt%; Component C: 6 wt%;

[0095] The aviation gasoline was tested, and the data are shown in Table 2.

[0096] Example 6

[0097] This embodiment is basically the same as Example 1, except that the content of each component in component A is: 0.68 wt% C4 alkanes, 99.25 wt% C5 alkanes (of which, 99.05 wt% C5 isoalkanes and 0.20 wt% C5 n-alkanes), 0.07 wt% C6 alkanes, and 0.00 wt% C7 hydrocarbons.

[0098] The aviation gasoline was tested, and the data are shown in Table 2.

[0099] Example 7

[0100] This embodiment is basically the same as Example 1, except that the content of each component of the petroleum-based alkylated gasoline is as follows: C4 n-alkanes 6.06 wt%, C4 isoalkanes 0.27 wt%, C4 olefins 0.01 wt%, C5 isoalkanes 4.35 wt%, C6 isoalkanes 5.03 wt%, C7 isoalkanes 4.36 wt%, C8 isoalkanes 71.87 wt%, C8 olefins 0.01 wt%, C9 n-alkanes 0.14 wt%, C9 isoalkanes 3.05 wt%, C9 cycloalkanes 0.01 wt%, C10 n-alkanes 0.04 wt%, C10 isoalkanes 1.04 wt%, C10 cycloalkanes 0.01 wt%, C11 isoalkanes 3.55 wt%, C11 cycloalkanes 0.06 wt%, and C12 isoalkanes 0.14 wt%.

[0101] The aviation gasoline was tested, and the data are shown in Table 2.

[0102] Example 8

[0103] This embodiment is basically the same as Example 1, except that the content of each component in component C is as follows: C7 aromatics 0.56wt%, C8 aromatics 98.86wt% (of which, p-xylene 25.22wt%, m-xylene 55.8wt%, o-xylene 14.13wt%, ethylbenzene 3.71wt%), non-aromatic impurities 0.57wt%, and C9 aromatics 0.01wt%.

[0104] The aviation gasoline was tested, and the data are shown in Table 2.

[0105] Table 2. Aviation gasoline test data from Examples 2-8

[0106]

[0107]

[0108] Note: The analysis methods and control indicators for each item in Table 2 are the same as those in Table 1, and will not be listed again.

[0109] Comparative Example 1:

[0110] Compared with Example 4, this comparative example has the following composition: Component A: 2 wt%; Petroleum-based alkylated gasoline: 48 wt%; Component B: 43 wt%; Component C: 7 wt%.

[0111] The ratio described in Comparative Example 1 above has a motor octane number of 94.7, which is less than 95.0, meaning it does not meet the motor octane number requirement for No. 95 unleaded aviation piston engine fuel products.

[0112] The aviation gasoline was tested, and the data is shown in Table 3.

[0113] Comparative Example 2:

[0114] Compared with Example 1, this comparative example has the following composition: Component A: 10 wt%; Petroleum-based alkylated gasoline: 15 wt%; Component B: 60 wt%; Component C: 15 wt%.

[0115] The proportion described in Comparative Example 2 above has a Motor Octane Number (MAN) of 94.8, which is less than 95.0, meaning it does not meet the MAN requirement for No. 95 unleaded aviation piston engine fuel. Simultaneously, its initial boiling point is 38.1°C, which is less than 40.0°C, meaning it does not meet the initial boiling point requirement for No. 95 unleaded aviation piston engine fuel.

[0116] The aviation gasoline was tested, and the data is shown in Table 3.

[0117] Table 3. Comparative Example 1-2 Aviation Gasoline Test Data

[0118]

[0119] Note: The analysis methods and control indicators for each item in Table 3 are the same as those in Table 1, and will not be listed again.

[0120] Any numerical value mentioned in this invention, if there is only a two-unit interval between any minimum and any maximum value, includes all values ​​that increase by one unit each time from the minimum to the maximum value. For example, if the amount of a component, or the value of a process variable such as temperature, pressure, or time, is stated as 50-90, in this specification it means specifically listing values ​​such as 51-89, 52-88… and 69-71 and 70-71, etc. For non-integer values, it may be appropriately considered that a unit is 0.1, 0.01, 0.001, or 0.0001. These are merely some specifically specified examples. In this application, in a similar manner, all possible combinations of numerical values ​​between the listed minimum and maximum values ​​are considered to have been disclosed.

[0121] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. An aviation gasoline composition characterized in that, petroleum-based alkylate gasoline, component A, component B and component C, wherein component A comprises C4-C7 alkanes, component B comprises C8 isomeric alkanes, and component C comprises C7-C9 aromatic hydrocarbons.

2. The aviation gasoline composition of claim 1, wherein, The aviation gasoline composition comprises, based on the total weight of the aviation gasoline composition: component A: 3wt%-10wt%, petroleum-based alkylate gasoline: 25wt%-45wt%, component B: 46wt%-70wt%, and component C: 2wt%-14wt%. Preferably, the aviation gasoline composition comprises, based on the total weight of the aviation gasoline composition: component A: 4wt%-8wt%, petroleum-based alkylate gasoline: 30wt%-35wt%, component B: 50wt%-60wt%, and component C: 3wt%-10wt%.

3. The aviation gasoline composition of any one of claims 1-2, wherein, The mass percentage content of C5 isomeric alkanes in component A is greater than or equal to 95.0wt%, based on the total weight of component A.

4. The aviation gasoline composition of any one of claims 1-3, wherein, The mass percentage content of C8 isomeric alkanes in component B is greater than or equal to 99.7wt%, based on the total weight of component B.

5. The aviation gasoline composition of any one of claims 1-4, wherein, The petroleum-based alkylate gasoline comprises C4-C12 alkanes, Preferably, the total amount of C4-C12 alkanes in the petroleum-based alkylate gasoline is greater than or equal to 99.86wt%, based on the total weight of the petroleum-based alkylate gasoline. Preferably, the mass percentage content of C8 isomeric alkanes in the petroleum-based alkylate gasoline is 70.0wt%-72.0wt%, based on the total weight of the petroleum-based alkylate gasoline.

6. The aviation gasoline composition of any one of claims 1-5, wherein, The content of C8 aromatic hydrocarbons in component C is greater than or equal to 98.5wt%, and the content of C9 aromatic hydrocarbons is less than or equal to 0.01wt%, based on the total weight of component C. Preferably, component C comprises C8 aromatic hydrocarbons in an amount of 98.5wt%-99.26wt%, based on the total weight of component C.

7. The aviation gasoline composition of any one of claims 1-6, wherein, The C8 aromatic hydrocarbons comprise p-xylene 20.0wt%-30.0wt%, m-xylene 50.0wt%-60.0wt%, o-xylene 10.0wt%-20.0wt%, and the balance is ethylbenzene, based on the total weight of the C8 aromatic hydrocarbons.

8. An aviation gasoline comprising the aviation gasoline composition according to any one of claims 1-7 and an additive.

9. The aviation gasoline of claim 8, wherein, The additive comprises an antioxidant, Preferably, the antioxidant is selected from at least one of 2,6-di-tert-butyl-p-cresol, 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butylphenol.

10. A method of producing an aviation gasoline according to any one of claims 8-9, characterized in that, The aviation gasoline composition and the additive are mixed to obtain the aviation gasoline. The aviation gasoline composition and the additive are mixed to obtain the aviation gasoline.

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