Gasoline composition and method for producing the same

Abstract

To provide a novel gasoline composition capable of suppressing vapor pressure increase and exhibiting desired distillation characteristics even when containing a large amount of ethanol.SOLUTION: Provided is a gasoline composition comprising a C4 fraction, light catalytic cracked gasoline, a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, produced from a C4 fraction as a feedstock, benzene-depleted heavy catalytic cracked gasoline, and ethanol. The composition further includes either heavy catalytic cracked gasoline or a hydrogenated fraction obtained from a naphtha cracker, having a carbon number range of C6 to C8 and an aromatic content of no more than 10.0 vol%, and either alkylate alone or a mixture of alkylate and heavy catalytic cracked gasoline, each within a specified range. Additionally, the composition meets defined specifications for research octane number (RON), Reid vapor pressure, 70°C distillation yield, 50 vol% distillation temperature, density at 15°C, aromatic content, and olefin content, each also within a specified range.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a gasoline composition and a method for producing the gasoline composition. [Background technology]

[0002] In recent years, gasoline compositions containing ethanol blended with various base materials derived from crude oil have been studied for the purpose of making effective use of petroleum resources and reducing the environmental load.

[0003] As for the ethanol, ethanol obtained from biomass (biomass ethanol or bioethanol) has become known as a renewable raw material. Specifically, bioethanol that is known to be produced includes (i) that produced by fermenting and distilling biomass such as sugarcane or corn, and (ii) that produced by separating cellulose from biomass, breaking down the separated cellulose into sugars using enzymes, and converting the sugars into alcohol using microorganisms.

[0004] Ethanol not only has a high octane rating, making it useful as a gasoline base stock, but also emits less carbon monoxide and hydrocarbons when burned than petroleum-derived base stocks, which is thought to contribute to reducing environmental impact.

[0005] On the other hand, because ethanol is highly hydrophilic, gasoline containing ethanol easily absorbs surrounding water, and when the water content exceeds a certain amount, depending on the conditions, the gasoline may separate into a gasoline layer and a water layer, with the ethanol being absorbed into the water layer (see, for example, Patent Documents 1 and 2). As a result, the gasoline composition may exhibit properties that differ from those expected given that it contains ethanol, and it is anticipated that gasoline vehicles may not achieve the appropriate driving performance.

[0006] Under these circumstances, the use of ethanol in Japan has traditionally been restricted by the "Law Concerning the Assurance of Quality of Gasoline, etc. (Quality Assurance Law)." However, a 2003 amendment to the law now allows the blending of ethanol into gasoline compositions, with a limit of up to 3% by volume. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] U.S. Patent No. 4,207,076 [Patent Document 2] Special Publication No. 2003-520891 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0008] Meanwhile, the Petroleum Association of Japan has decided to introduce gasoline compositions containing ethyl tertiary butyl ether (ETBE), obtained by reacting ethanol with isobutene, instead of ethanol, in order to suppress the absorption of water, and various companies are now selling these gasoline compositions.

[0009] Thus, in Japan, the current approach is to blend ETBE into gasoline compositions instead of ethanol. However, in light of the recent adoption situation in other countries, Japan is also considering blending ethanol into gasoline compositions and raising the upper limit to around 10% by volume.

[0010] However, the inventors have found through their investigations that when the blending amount of ethanol in a gasoline composition reaches about 10% by volume, the azeotropy phenomenon easily occurs between ethanol and the compounds that make up the various crude oil-derived base stocks used as gasoline base stocks, which increases the vapor pressure of the gasoline composition and makes it more likely that the distillation properties will change, making it difficult to meet product specifications.

[0011] Under these circumstances, an object of the present invention is to provide a novel gasoline composition which, even when it contains a large amount of ethanol, can suppress an increase in vapor pressure and exhibit desired distillation properties. [Means for solving the problem]

[0012] As a result of intensive research conducted by the present inventors to solve the above technical problems, they discovered that the above technical problems can be solved by producing a gasoline composition by blending specific base stocks in specific proportions, and based on this finding they have completed the present invention.

[0013] That is, the present invention provides a base material comprising: (I) (1) 0.5 to 7.0 volume % of a C4 fraction, (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) Contains 7.0 to 15.0% by volume of ethanol; (6A) Contains 17.0 to 23.0% by volume of heavy catalytic cracking gasoline, (6B) A hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, containing 3.0 to 8.0% by volume of a fraction having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) alkylate 2.0 to 7.0% by volume and heavy catalytic cracking gasoline 1.0 to 6.0% by volume; moreover, (a) Research octane number of 96.0 or more; (b) Reid vapor pressure is 57.0 to 95.0 kPa; (c) The distillate at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm 3 , (f) Aromatic content of 45.0% by volume or less; (g) Olefin content is 25.0% by volume or less a gasoline composition comprising: (II) A method for producing a gasoline composition, comprising: (1) 0.5 to 7.0 volume percent of C4 fraction, (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) Ethanol is blended at 7.0 to 15.0% by volume, (6A) Heavy catalytic cracking gasoline is blended at 17.0 to 23.0% by volume, or (6B) A mixture of 3.0 to 8.0% by volume of a hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) By blending 2.0 to 7.0% by volume of alkylate and 1.0 to 6.0% by volume of heavy catalytic cracking gasoline, (a) Research octane number of 96.0 or more; (b) Reid vapor pressure is 57.0 to 95.0 kPa; (c) The distillate at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm 3 , (f) Aromatic content of 45.0% by volume or less; (g) Olefin content is 25.0% by volume or less to produce a gasoline composition comprising A method for producing a gasoline composition, This provides: [Effects of the Invention]

[0014] According to the present invention, there is provided a novel gasoline composition which can suppress an increase in vapor pressure and exhibit desired distillation properties even when it contains a large amount of ethanol, and there is also provided a method for producing the gasoline composition. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described in detail. In this specification, the use of "to" to indicate a range of values ​​indicates a range that includes the values ​​stated as the upper and lower limits. When a unit is stated for only the upper limit of a range of values ​​expressed by "to," this means that the lower limit is also expressed in the same unit. In the numerical ranges described in stages in this specification, the upper or lower limit value described in one numerical range may be replaced with the upper or lower limit value of another numerical range described in stages. In this specification, the content or amount of each component in a composition means, unless otherwise specified, the total content or amount of the multiple substances present in the composition when multiple substances corresponding to each component are present in the composition. As used herein, combinations of preferred embodiments are more preferred embodiments.

[0016] In the present application, unless otherwise specified, the physical properties shown below are values ​​measured by the following methods.

[0017] <Research Method Octane Number (RON)> This refers to the value measured according to the provisions of JIS K 2280-1 (2013).

[0018] <Motor method octane number (MON)> This refers to the value measured according to the provisions of JIS K 2280-2 (2013).

[0019] <Reid vapor pressure> This refers to the value measured based on JIS K2258 "Crude oil and fuel oil vapor pressure test method (Reid method)."

[0020] <Distillation properties> Distillation properties such as 10% by volume distillation temperature (T10), 50% by volume distillation temperature (T50), 90% by volume distillation temperature (T90), end point (FBP), and 70°C distillate amount refer to values ​​measured by atmospheric distillation in accordance with JIS K 2254 (1998).

[0021] <Density at 15℃> This refers to the value measured according to the provisions of JIS K 2249 (2011).

[0022] <Aromatic content> The method for measuring the aromatic content means the value measured in accordance with the provisions for total component testing by gas chromatography in JIS K 2536 "Testing methods for petroleum product components."

[0023] <Olefin content> The olefin content is measured in accordance with the total component test by gas chromatography in JIS K 2536 "Testing Methods for Components in Petroleum Products."

[0024] <Sulfur content> This refers to the value measured in accordance with JIS K 2541-6 (2003) "Crude oil and petroleum products - Sulfur content test method, Part 6: Ultraviolet fluorescence method."

[0025] The gasoline composition according to the present invention comprises, as a constituent base material: (1) 0.5 to 7.0 volume percent of C4 fraction, (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) Contains 7.0 to 15.0% by volume of ethanol; (6A) Contains 17.0 to 23.0% by volume of heavy catalytic cracking gasoline, (6B) A hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, containing 3.0 to 8.0% by volume of a fraction having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) alkylate 2.0 to 7.0% by volume and heavy catalytic cracking gasoline 1.0 to 6.0% by volume; moreover, (a) Research octane number of 96.0 or more; (b) Reid vapor pressure is 57.0 to 95.0 kPa; (c) The distillate at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm 3 , (f) Aromatic content of 45.0% by volume or less; (g) Olefin content is 25.0% by volume or less It is characterized in that:

[0026] The gasoline composition according to the present invention contains (1) a C4 fraction as a base component.

[0027] In the gasoline composition according to the present invention, (1) the C4 fraction means a fraction obtained in the refining process of crude oil, which mainly contains components with a carbon number of 4, such as n-butene, isobutene, n-butane, isobutane, and butadiene.

[0028] In the gasoline composition according to the present invention, (1) the C4 fraction can be obtained as a by-product during atmospheric distillation of crude oil, thermal cracking of naphtha, production of reformed gasoline, production of cracked gasoline, or the like. In the gasoline composition according to the present invention, (1) the C4 fraction can be obtained as a by-product by distillation treatment during the production of base components for gasoline compositions, kerosene compositions, diesel compositions, etc., by catalytically cracking a heavy diesel oil fraction fraction obtained by atmospheric distillation of crude oil in a fluid catalytic cracking unit, or by catalytically cracking residual oil in a residual oil fluid catalytic cracking unit. In addition, in the gasoline composition according to the present invention, (1) the C4 fraction can be obtained as a by-product when ethylene or propylene is produced by steam cracking naphtha or the like in an ethylene production unit using naphtha or the like as a raw material.

[0029] The gasoline composition according to the present invention contains (1) 0.5 to 7.0% by volume of a C4 fraction, preferably 0.7 to 6.5% by volume, and more preferably 1.0 to 6.0% by volume.

[0030] By containing the C4 fraction in the above-mentioned proportions in the gasoline composition according to the present invention (1), it is possible to maintain the octane number at a high level while suppressing the gasoline composition from becoming lighter.

[0031] The gasoline composition according to the present invention contains (2) light catalytic cracking gasoline as a constituent base material.

[0032] In the gasoline composition according to the present invention, light catalytically cracked gasoline refers to a light fraction having a 90% by volume distillation temperature by atmospheric distillation of 100°C or less, which is obtained by distilling and separating the heavy components from the gasoline fraction obtained by fluid catalytic cracking using as feedstock oils such as diesel fractions, residual oils, coker oils, deasphalted oils, etc. obtained by atmospheric or vacuum distillation of crude oil, or vegetable oils other than crude oil, GTL oils, etc., or hydrocarbon oils obtained by hydrotreating any of these.

[0033] Fluid catalytic cracking is a method for producing catalytically cracked gasoline from heavy hydrocarbons. More specifically, it is a process in which a flowing catalyst is brought into contact with hydrocarbon oil at high temperatures to obtain gasoline, middle distillates, etc. As an example of the fluid catalytic cracking method, reference can be made to the FCC (Fluid Catalytic Cracking) process described in Hydrocarbon Processing / November 2000, pages 107-110.

[0034] Light catalytic cracked gasoline may be obtained by using the above-mentioned FCC process, by bringing a hydrocarbon oil (hydrocarbon mixture) that boils at or above the boiling point of gasoline into contact with a solid acid catalyst (so-called catalyst exhibiting solid acidity) such as zeolite, silica alumina, or alumina at high temperature.

[0035] The above-mentioned FCC process produces cracked products such as dry gas, liquefied petroleum gas (LPG), gasoline fraction, light cycle oil (LCO), heavy cycle oil (HCO), and slurry oil, and the light gasoline fraction obtained by distilling the above-mentioned gasoline fraction corresponds to the light catalytically cracked gasoline that constitutes the gasoline composition of the present invention.

[0036] In the gasoline composition according to the present invention, the research octane number (RON) of the light catalytic cracked gasoline is preferably 90.0 or higher, more preferably 91.0 or higher, and even more preferably 92.0 or higher. When the research octane number of the light catalytic cracked gasoline is 90.0 or more, a gasoline composition having a high octane number can be easily obtained in accordance with the present invention.

[0037] In the gasoline composition according to the present invention, the Reid vapor pressure (RVP) of the light catalytic cracked gasoline is preferably 75.0 kPa to 120.0 kPa, more preferably 77.0 kPa to 118.0 kPa, and even more preferably 80.0 kPa to 115.0 kPa. By ensuring that the Reid vapor pressure of the light catalytic cracked gasoline is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0038] In the gasoline composition according to the present invention, the 70°C distillate (E70) of the light catalytic cracked gasoline is preferably 70.0% by volume to 95.0% by volume, more preferably 72.0% by volume to 95.0% by volume, and even more preferably 75.0% by volume to 95.0% by volume. By ensuring that the 70°C distillate amount of the light catalytic cracked gasoline is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0039] In the gasoline composition according to the present invention, the light catalytic cracked gasoline preferably has a 10% by volume distillation temperature (T10) of 30.0°C to 45.0°C, more preferably 33.0°C to 44.0°C, and even more preferably 35.0°C to 43.0°C. In the gasoline composition according to the present invention, the light catalytic cracked gasoline preferably has a 50% by volume distillation temperature (T50) of 40.0°C to 55.0°C, more preferably 43.0°C to 55.0°C, and even more preferably 45.0°C to 55.0°C. In the gasoline composition according to the present invention, the light catalytic cracked gasoline preferably has a 90% by volume distillation temperature (T90) of 55.0°C to 80.0°C, more preferably 58.0°C to 78.0°C, and even more preferably 60.0°C to 75.0°C. In the gasoline composition according to the present invention, the light catalytic cracking gasoline preferably has an end point (FBP) of 80.0°C to 110.0°C, more preferably 85.0°C to 110.0°C, and even more preferably 90.0°C to 110.0°C.

[0040] In the gasoline composition of the present invention, by having the 10% by volume distillation temperature (T10), 50% by volume distillation temperature (T50), 90% by volume distillation temperature (T90) or end point (FBP) of the light catalytic cracked gasoline within the above ranges, (2) the octane number of the light catalytic cracked gasoline can be maintained high, making it easier to maintain a high octane number of the gasoline composition of the present invention, and also making it easier for the gasoline composition of the present invention to exhibit excellent driving performance and engine cleanliness.

[0041] In the gasoline composition according to the present invention, the density of the light catalytic cracking gasoline at 15°C is 0.6500 g / cm 3 ~0.6900g / cm 3 Preferably, it is 0.6530 g / cm 3 ~0.6900g / cm 3 More preferably, it is 0.6550 g / cm 3 ~0.6900g / cm 3 It is more preferable that:

[0042] When the density of the light catalytic cracked gasoline at 15°C is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0043] In the gasoline composition according to the present invention, the aromatic content of the light catalytic cracked gasoline is preferably 0.1 to 3.0% by volume, more preferably 0.1 to 2.5% by volume, and even more preferably 0.1 to 2.0% by volume. By ensuring that the aromatics content of the light catalytic cracked gasoline is within the above range, it becomes easier to maintain the octane number of the gasoline composition according to the present invention at a high level.

[0044] In the gasoline composition according to the present invention, the light catalytic cracked gasoline preferably contains 30.0% to 55.0% by volume of olefins (unsaturated hydrocarbon compounds), more preferably 30.0% to 53.0% by volume, and even more preferably 30.0% to 50.0% by volume. By ensuring that the olefin content of the light catalytic cracked gasoline is within the above range, it becomes easier to maintain the octane number of the gasoline composition according to the present invention at a high level.

[0045] The gasoline composition according to the present invention contains 15.0 to 30.0% by volume, preferably 16.0 to 29.0% by volume, and more preferably 17.0 to 28.0% by volume of light catalytic cracked gasoline.

[0046] By containing light catalytic cracked gasoline in the above proportion in the gasoline composition of the present invention, it is possible to maintain the octane number at a high level while suppressing the gasoline composition from becoming lighter.

[0047] The gasoline composition according to the present invention contains, as a constituent base material, (3) a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from a unit for producing methyl ethyl ketone using a C4 fraction as a raw material.

[0048] In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in a unit for producing methyl ethyl ketone using a C4 fraction as the raw material, specifically means a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in a process for producing methyl ethyl ketone by dehydrogenating and purifying sec-butyl alcohol obtained using a C4 fraction as the raw material.

[0049] In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in a unit for producing methyl ethyl ketone using a C4 fraction as a raw material, may contain olefins having 12 carbon atoms in addition to 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene.

[0050] The research octane number (RON) of 2,4,4-trimethyl-1-pentene is 106.0, and the RON of 2,4,4-trimethyl-2-pentene is 103.5. Both RONs are high, so the desired octane number can be easily achieved in the gasoline composition of the present invention.

[0051] Since 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene do not have an aromatic hydrocarbon structure, the gasoline composition of the present invention contains as its base a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in a plant that produces methyl ethyl ketone using a C4 fraction as the raw material. This makes it less likely to cause environmental problems due to the emission of aromatic hydrocarbon compounds (aromatic components) into the atmosphere, and also effectively suppresses the amount of deposits formed on intake valves.

[0052] In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from an apparatus for producing methyl ethyl ketone using a C4 fraction as the raw material, preferably contains 25.0 to 50.0% by volume of 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene in total, more preferably 27.0 to 48.0% by volume, and even more preferably 30.0 to 45.0% by volume.

[0053] In the present application, the content ratios of 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene in a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, refer to values ​​measured in accordance with the provisions of Japan Petroleum Institute Method JPI-5S-33-90 (gas chromatography method).

[0054] In the gasoline composition according to the present invention, the research octane number (RON) of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from a unit for producing methyl ethyl ketone using a C4 fraction as a raw material, is preferably 90.0 or higher, more preferably 91.0 or higher, and even more preferably 92.0 or higher. Since the research octane number of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced in a unit that produces methyl ethyl ketone using a C4 fraction as a raw material is 90.0 or higher, a gasoline composition with a high octane number can be easily obtained in accordance with the present invention.

[0055] In the gasoline composition according to the present invention, the Reid vapor pressure (RVP) of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, is preferably 30.0 kPa to 60.0 kPa, more preferably 32.0 kPa to 58.0 kPa, and even more preferably 35.0 kPa to 55.0 kPa. By ensuring that the Reid vapor pressure of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0056] In the gasoline composition according to the present invention, the 70°C distillate (E70) of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as the raw material, is preferably 1.0 to 15.0% by volume, more preferably 2.0 to 14.0% by volume, and even more preferably 3.0 to 13.0% by volume. By ensuring that the 70°C distillate amount of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0057] In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, preferably has a 10% by volume distillation temperature (T10) of 80.0°C to 110.0°C, more preferably 82.0°C to 108.0°C, and even more preferably 85.0°C to 105.0°C. In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as the raw material, preferably has a 50% by volume distillation temperature (T50) of 110.0°C to 140.0°C, more preferably 112.0°C to 138.0°C, and even more preferably 115.0°C to 135.0°C. In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, preferably has a 90% by volume distillation temperature (T90) of 160.0°C to 190.0°C, more preferably 162.0°C to 188.0°C, and even more preferably 165.0°C to 185.0°C. In the gasoline composition according to the present invention, the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from a unit for producing methyl ethyl ketone using a C4 fraction as a raw material, preferably has an end point (FBP) of 185.0°C to 215.0°C, more preferably 187.0°C to 213.0°C, and even more preferably 190.0°C to 210.0°C.

[0058] In the gasoline composition of the present invention, the 10% by volume distillation temperature (T10), 50% by volume distillation temperature (T50), 90% by volume distillation temperature (T90) or end point (FBP) of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a unit that produces methyl ethyl ketone using a C4 fraction as a raw material is within the above-mentioned ranges, which makes it easier to maintain a high octane number of the gasoline composition of the present invention and also makes it easier to exhibit the desired distillation characteristics in the gasoline composition of the present invention.

[0059] In the gasoline composition according to the present invention, the density at 15°C of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material is 0.7200 g / cm 3 ~0.7500g / cm 3 Preferably, it is 0.7230 g / cm 3 ~0.7500g / cm 3 More preferably, it is 0.7250 g / cm 3 ~0.7500g / cm 3 It is more preferable that: When the density at 15°C of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced in an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0060] In the gasoline composition according to the present invention, the aromatic content of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, is preferably 1.0% by volume or less (0.0 to 1.0% by volume), more preferably 0.5% by volume or less (0.0 to 0.5% by volume). By ensuring that the aromatics content of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a unit that produces methyl ethyl ketone using a C4 fraction as a raw material is within the above range, it becomes easier to maintain the octane number of the gasoline composition of the present invention at a high level.

[0061] In the gasoline composition according to the present invention, the olefin content (unsaturated hydrocarbon compound) of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which is produced from an apparatus for producing methyl ethyl ketone using a C4 fraction as a raw material, is preferably 80.0 to 95.0% by volume, more preferably 82.0 to 95.0% by volume, and even more preferably 85.0 to 95.0% by volume. By ensuring that the olefin content of the fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a unit that produces methyl ethyl ketone using a C4 fraction as a raw material is within the above range, it becomes easier to maintain the octane number of the gasoline composition of the present invention at a high level.

[0062] The gasoline composition according to the present invention contains 2.0 to 8.0% by volume, preferably 2.5 to 7.5% by volume, and more preferably 3.0 to 7.0% by volume, of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene, which fraction is produced from a plant that produces methyl ethyl ketone using a C4 fraction as a raw material.

[0063] By including in the gasoline composition of the present invention a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene in the above-mentioned proportions, which fraction is produced from a unit that produces methyl ethyl ketone using a C4 fraction as a raw material, it is possible to maintain a high octane number while suppressing the gasoline composition from becoming lighter.

[0064] The gasoline composition according to the present invention contains (4) a debenzenesed heavy catalytically reformed gasoline as a constituent base material.

[0065] In the gasoline composition according to the present invention, the benzene-free heavy catalytically reformed gasoline corresponds to the heavy fraction obtained when reformed gasoline obtained by contacting heavy straight-run naphtha or the like with a catalyst (for example, an alumina carrier carrying platinum or rhodium and chlorine) under high temperature and pressure in a hydrogen stream using a catalytic reforming method (such as the platforming method, magnaforming method, aromatizing method, reniforming method, food reforming method, ultraforming method, power forming method, etc.) is fractionated into a light fraction, a benzene fraction, and a heavy fraction by distillation.

[0066] In the gasoline composition according to the present invention, the research octane number (RON) of the benzene-free heavy catalytically reformed gasoline is preferably 101.0 or higher, more preferably 102.0 or higher. Since the benzene-free heavy catalytically reformed gasoline has a research octane number of 101.0 or more, a gasoline composition having a high octane number can be easily obtained in accordance with the present invention.

[0067] In the gasoline composition according to the present invention, the benzene-free heavy catalytically reformed gasoline preferably has a motor octane number (MON) of 90.0 or more, more preferably 92.0 or more. Since the benzene-free heavy catalytically reformed gasoline has a motor method octane number of 90.0 or more, a gasoline composition with a high octane number can be easily obtained in accordance with the present invention.

[0068] In the gasoline composition according to the present invention, the Reid vapor pressure (RVP) of the benzene-free heavy catalytically reformed gasoline is preferably 2.0 kPa or higher, more preferably 3.0 kPa or higher. When the benzene-depleted heavy catalytically reformed gasoline has a Reid vapor pressure (RVP) of 2.0 kPa or more, the desired Reid vapor pressure can be easily achieved in the gasoline composition according to the present invention.

[0069] In the gasoline composition according to the present invention, the benzene-free heavy catalytically reformed gasoline preferably has a distillation temperature range of 100.0 to 200.0°C, more preferably 100.0 to 190.0°C. In the present application, the distillation temperature range means the initial boiling point (IBP) to the final boiling point (FBP) of atmospheric distillation. In the gasoline composition according to the present invention, the 50% by volume distillation temperature (T50) of the benzene-depleted heavy catalytically reformed gasoline is preferably 115.0 to 140.0°C, more preferably 117.0 to 138.0°C, and even more preferably 120.0 to 135.0°C. By ensuring that the distillation temperature range and T50 of the benzene-depleted heavy catalytically reformed gasoline are within the above ranges, the gasoline composition according to the present invention can easily exhibit the desired distillation characteristics.

[0070] In the gasoline composition according to the present invention, the density of the benzene-free heavy catalytically reformed gasoline at 15°C is 0.8300 g / cm 3 ~0.8700g / cm 3 Preferably, it is 0.8330 g / cm 3 ~0.8700g / cm 3 More preferably, it is 0.8350 g / cm 3 ~0.8700g / cm 3 It is more preferable that: By ensuring that the density at 15°C of the benzene-free heavy catalytically reformed gasoline is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0071] In the gasoline composition according to the present invention, the content of aromatic hydrocarbon compounds (aromatic content) in the benzene-depleted heavy catalytically reformed gasoline is preferably 70.0 to 98.0% by volume, more preferably 80.0 to 96.0% by volume.

[0072] In the gasoline composition according to the present invention, the olefin content (unsaturated hydrocarbon compounds) in the benzene-free heavy catalytically reformed gasoline is preferably 2.0% by volume or less (0.0 to 2.0% by volume), and more preferably 1.0% by volume or less (0.0 to 1.0% by volume).

[0073] The gasoline composition according to the present invention contains 35.0 to 55.0% by volume of benzene-free heavy catalytically reformed gasoline, preferably 37.0 to 54.0% by volume, and more preferably 40.0 to 53.0% by volume.

[0074] By including the benzene-free heavy catalytically reformed gasoline in the gasoline composition according to the present invention in the above proportion, it is possible to maintain the octane number at a high level while suppressing the gasoline composition from becoming lighter.

[0075] The gasoline composition according to the present invention contains (5) ethanol as a constituent base material.

[0076] In the gasoline composition according to the present invention, the ethanol may be obtained from biomass (biomass ethanol or bioethanol) or may be obtained by chemical synthesis, but it is suitable that it is obtained from biomass.

[0077] Examples of the bioethanol include (i) that produced by fermenting and distilling biomass such as sugarcane or corn, and (ii) that produced by separating cellulose from biomass, breaking down the separated cellulose into sugars using enzymes, and converting the sugars into alcohol using microorganisms.

[0078] Examples of ethanol obtained by chemical synthesis include ethanol obtained by reacting ethylene with sulfuric acid to produce ethyl sulfate and then hydrolyzing the resulting ethyl sulfate, and ethanol obtained by the hydration reaction of ethylene.

[0079] The gasoline composition according to the present invention contains 7.0 to 15.0% by volume of ethanol, preferably 7.5 to 14.0% by volume, and more preferably 8.0 to 12.0% by volume.

[0080] Because the gasoline composition of the present invention contains a large amount of ethanol as described above, it is possible to easily improve the octane number, and since it emits less carbon monoxide and hydrocarbons during combustion than petroleum-derived base materials, it is possible to easily reduce the environmental load.

[0081] The gasoline composition according to the present invention comprises, as a constituent base material: (6A) Contains heavy catalytic cracking gasoline, (6B) A hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, containing an aromatics content of 10.0% by volume or less, and an alkylate, or (6C) Contains alkylate and heavy catalytic cracking gasoline.

[0082] In the gasoline composition according to the present invention, heavy catalytic cracked gasoline refers to a fraction consisting of heavy components obtained by distillation separation of the fraction (light catalytic cracked gasoline) having a 90% distillation temperature of 100°C or less among the gasoline fractions obtained by fluid catalytic cracking and distillation treatment, which are obtained using as feedstock oils light oil fractions, residual oils, coker oils, deasphalted oils, etc. obtained by atmospheric or vacuum distillation of crude oil, or vegetable oils other than crude oil, GTL oils, etc., and hydrocarbon oils obtained by hydrotreating these. In the gasoline composition of the present invention, the heavy catalytically cracked gasoline is preferably one obtained by cracking by fluid catalytic cracking, followed by distillation and then further desulfurizing the heavy gasoline fraction.

[0083] The details of the fluid catalytic cracking process are as described above in the explanation of light catalytic cracked gasoline.

[0084] In the gasoline composition according to the present invention, the distillation temperature range of the heavy catalytic cracked gasoline by atmospheric distillation is preferably 20.0 to 220.0°C, more preferably 25.0 to 218.0°C, and even more preferably 30.0 to 215.0°C.

[0085] In the gasoline composition according to the present invention, the heavy catalytic cracked gasoline preferably has a 10% by volume distillation temperature (T10) by atmospheric distillation of 50.0°C to 80.0°C, more preferably 52.0°C to 75.0°C, and even more preferably 55.0°C to 70.0°C. In the gasoline composition according to the present invention, the heavy catalytic cracked gasoline preferably has a 50% by volume distillation temperature (T50) by atmospheric distillation of 95.0°C to 125.0°C, more preferably 97.0°C to 123.0°C, and even more preferably 100.0°C to 120.0°C. In the gasoline composition according to the present invention, the heavy catalytic cracked gasoline preferably has a 90% by volume distillation temperature (T90) by atmospheric distillation of 140.0°C to 195.0°C, more preferably 142.0°C to 193.0°C, and even more preferably 150.0°C to 190.0°C.

[0086] In the gasoline composition according to the present invention, the Reid vapor pressure (RVP) of the heavy catalytic cracked gasoline is preferably 40.0 to 60.0 kPa, more preferably 37.0 to 58.0 kPa, and even more preferably 35.0 to 55.0 kPa.

[0087] By ensuring that the distillation temperature range, 10% by volume distillation temperature (T10), 50% by volume distillation temperature (T50), or 90% by volume distillation temperature (T90) of heavy catalytic cracked gasoline during atmospheric distillation, and the Reid vapor pressure (RVP) are within the above ranges, the Reid vapor pressure (RVP) and distillation properties can be easily controlled within the desired ranges even when the gasoline composition of the present invention contains a large amount of ethanol.

[0088] In the gasoline composition according to the present invention, the research octane number (RON) of the heavy catalytic cracked gasoline is preferably 87.0 to 94.0, more preferably 87.0 to 93.0, and even more preferably 87.0 to 92.0.

[0089] In the gasoline composition according to the present invention, the 70°C distillate (E70) of the heavy catalytic cracked gasoline is preferably 10.0% by volume to 30.0% by volume, more preferably 12.0% by volume to 28.0% by volume, and even more preferably 14.0% by volume to 26.0% by volume. By keeping the 70°C distillate amount of the heavy catalytic cracked gasoline within the above range, it is possible to easily prevent the gasoline composition from becoming lighter.

[0090] In the gasoline composition according to the present invention, the density of the heavy catalytic cracking gasoline at 15°C is 0.7000 to 0.7700 g / cm 3 It is preferable that the density is 0.7050 to 0.7650 g / cm 3 More preferably, it is 0.7100 to 0.7600 g / cm 3 It is more preferable that:

[0091] In the gasoline composition according to the present invention, the heavy catalytic cracking gasoline preferably has an aromatic content of 40.0% by volume or less (0.0 to 40.0% by volume), more preferably 30.0% by volume or less (0.0 to 30.0% by volume).

[0092] In the gasoline composition according to the present invention, the heavy catalytic cracking gasoline preferably has an olefin content (unsaturated hydrocarbon compounds) of 50.0% by volume or less (0.0 to 50.0% by volume), more preferably 40.0% by volume or less (0.0 to 40.0% by volume).

[0093] In the gasoline composition according to the present invention, the sulfur content of the heavy catalytic cracked gasoline is preferably 50 ppm by mass or less, more preferably 40 ppm by mass or less, and even more preferably 30 ppm by mass or less.

[0094] In the gasoline composition according to the present invention, the hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less can be obtained by dearomatizing the hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker, that is, by hydrogenating the C6 to C8 fraction produced from a naphtha cracker and then dearomatizing it by sulfolane solvent extraction. A fraction that is a hydrogenated product of a fraction having 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less can be obtained by (i) thermally cracking a feedstock such as naphtha in a naphtha cracker to obtain a fraction containing unsaturated hydrocarbon compounds having 6 to 8 carbon atoms, (ii) subjecting the fraction to hydrotreating (hydrogenation treatment) to convert it into saturated hydrocarbon compounds, and (iii) reducing the aromatic hydrocarbon compound (aromatic content) content to 10.0% by volume or less by sulfolane solvent extraction.

[0095] In the gasoline composition according to the present invention, the research octane number (RON) of the hydrogenated fraction of C6 to C8 obtained from a naphtha cracker, which fraction has an aromatic content of 10.0% by volume or less, is preferably 50.0 or more, more preferably 52.0 or more, and even more preferably 55.0 or more. The hydrogenated fraction of carbon atoms having 6 to 8 carbon atoms obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less has a research octane number of 50.0 or more, so that the gasoline composition according to the present invention can easily have a high octane number. In the gasoline composition according to the present invention, the research octane number (RON) of the hydrogenated fraction of carbon atoms having 6 to 8 carbon atoms obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less is preferably high, but due to the nature of the fraction, the octane number (RON) is usually 70.0 or less, and suitably 65.0 or less.

[0096] In the gasoline composition according to the present invention, the Reid vapor pressure (RVP) of the hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less is preferably 10.0 kPa to 60.0 kPa, more preferably 13.0 kPa to 57.0 kPa, and even more preferably 20.0 kPa to 50.0 kPa. When the Reid vapor pressure of the hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less is within the above range, it is possible to easily prevent the gasoline composition according to the present invention from becoming lighter.

[0097] In the gasoline composition according to the present invention, the 70°C distillate (E70) of a fraction which is a hydrogenation product of a fraction having 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less is preferably 0.5% by volume to 50.0% by volume, more preferably 1.0% by volume to 48.0% by volume, and even more preferably 2.0% by volume to 45.0% by volume. By ensuring that the 70°C distillate amount of the hydrogenated fraction of the C6 to C8 fraction obtained from a naphtha cracker and having an aromatics content of 10.0% by volume or less is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0098] In the gasoline composition according to the present invention, the fraction which is a hydrogenated fraction of 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less preferably has a 10% by volume distillation temperature (T10) of 50.0°C to 105.0°C, more preferably 52.0°C to 103.0°C, and even more preferably 55.0°C to 100.0°C. In the gasoline composition according to the present invention, the fraction which is a hydrogenated fraction of 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less preferably has a 50% by volume distillation temperature (T50) of 65.0°C to 120.0°C, more preferably 67.0°C to 118.0°C, and even more preferably 70.0°C to 115.0°C. In the gasoline composition according to the present invention, the fraction which is a hydrogenated fraction of 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less preferably has a 90% by volume distillation temperature (T90) of 75.0°C to 155.0°C, more preferably 77.0°C to 153.0°C, and even more preferably 80.0°C to 150.0°C. In the gasoline composition according to the present invention, the fraction which is a hydrogenated fraction of 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less preferably has an end point (FBP) of 85.0°C to 180.0°C, more preferably 87.0°C to 178.0°C, and even more preferably 90.0°C to 175.0°C.

[0099] In the gasoline composition according to the present invention, the 10% by volume distillation temperature (T10), 50% by volume distillation temperature (T50), 90% by volume distillation temperature (T90) or end point (FBP) of the hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker and having an aromatics content of 10.0% by volume or less falls within the above-mentioned ranges, which makes it easier to maintain a high octane number of the gasoline composition according to the present invention and also makes it easier to exhibit the desired distillation characteristics in the gasoline composition according to the present invention.

[0100] In the gasoline composition according to the present invention, the density at 15°C of a hydrogenated fraction of carbon atoms having 6 to 8 carbon atoms obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less is 0.6700 g / cm 3 ~0.7300g / cm 3 Preferably, it is 0.6750 g / cm 3 ~0.7250g / cm3 More preferably, it is 0.6800 g / cm 3 ~0.7200g / cm 3 It is more preferable that: When the density at 15°C of a hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less is within the above range, it is possible to easily prevent the gasoline composition according to the present invention from becoming lighter.

[0101] In the gasoline composition according to the present invention, the fraction which is a hydrogenated fraction of 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less has an aromatic content of 10.0% by volume or less (0.0 to 10.0% by volume), preferably 7.0% by volume or less (0.0 to 7.0% by volume). When the aromatic content of the hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, which has an aromatic content of 10.0% by volume or less, is within the above range, it becomes easier to maintain good exhaust gas properties when using the gasoline composition of the present invention.

[0102] In the gasoline composition according to the present invention, the fraction which is a hydrogenation product of a fraction having 6 to 8 carbon atoms obtained from a naphtha cracker and has an aromatic content of 10.0% by volume or less preferably has an olefin content (unsaturated hydrocarbon compound) of 10.0% by volume or less (0.0 to 10.0% by volume), more preferably 5.0% by volume or less (0.0 to 5.0% by volume). By ensuring that the olefin content of the hydrogenated fraction of C6 to C8 obtained from a naphtha cracker and having an aromatics content of 10.0% by volume or less is within the above range, it becomes easier to maintain good oxidation stability of the gasoline composition according to the present invention.

[0103] In the gasoline composition according to the present invention, alkylate refers to a mixture of various alkylated products obtained by reacting isobutane and a lower olefin (such as butene or propylene) as raw materials in the presence of an acid catalyst (such as sulfuric acid, hydrogen fluoride or aluminum chloride). In the gasoline composition of the present invention, the alkylate preferably contains a fraction having 8 carbon atoms (2,2,4-trimethylpentane) in an amount of 40.0% by volume or more, more preferably 50.0% by volume or more, and even more preferably 60.0% by volume or more.

[0104] In the gasoline composition of the present invention, the alkylate preferably has a research octane number (RON) of 93.0 or higher, more preferably 94.0 or higher, and even more preferably 95.0 or higher.

[0105] In the gasoline composition according to the present invention, the Reid vapor pressure of the alkylate is preferably 10.0 to 60.0 kPa, more preferably 10.0 to 58.0 kPa, and even more preferably 10.0 to 55.0 kPa.

[0106] In the gasoline composition according to the present invention, the 70°C distillate (E70) of the alkylate is preferably 0.0% to 15.0% by volume, more preferably 0.0% to 13.0% by volume, and even more preferably 0.0% to 10.0% by volume.

[0107] In the gasoline composition according to the present invention, the alkylate preferably has a 50% by volume distillation temperature (T50) by atmospheric distillation of 90°C to 115°C, more preferably 92°C to 113°C, and even more preferably 95°C to 110°C. In the gasoline composition according to the present invention, by having the 50% by volume distillation temperature (T50) of the alkylate within the above range, it becomes easier to maintain a high octane number in the gasoline composition according to the present invention, and the gasoline composition according to the present invention can easily exhibit the desired distillation characteristics.

[0108] In the gasoline composition according to the present invention, the density of the alkylate at 15°C is 0.6800 g / cm 3 ~0.7200g / cm 3 Preferably, it is 0.6850 g / cm 3 ~0.7200g / cm 3 More preferably, it is 0.6900 g / cm 3 ~0.7200g / cm 3 It is more preferable that: By ensuring that the density of the alkylate at 15°C is within the above range, it is possible to easily prevent the gasoline composition of the present invention from becoming lighter.

[0109] In the gasoline composition according to the present invention, the alkylate preferably has an aromatic content of 3.0% by volume or less (0.0 to 3.0% by volume), more preferably 0.1% by volume or less (0.0 to 0.1% by volume).

[0110] In the gasoline composition according to the present invention, the alkylate preferably has an olefin content (unsaturated hydrocarbon compound) of 40.0% by volume or less (0.0 to 40.0% by volume), more preferably 30.0% by volume or less (0.0 to 30.0% by volume).

[0111] The gasoline composition according to the present invention comprises: (6A) Contains 17.0 to 23.0% by volume of heavy catalytic cracking gasoline, (6B) A hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, containing 3.0 to 8.0% by volume of a fraction having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) Contains 2.0 to 7.0% by volume of alkylate and 1.0 to 6.0% by volume of heavy catalytic cracking gasoline.

[0112] When the gasoline composition according to the present invention contains the heavy catalytically cracked gasoline specified in (6A) of the base materials specified in (6A) to (6C) above, the gasoline composition according to the present invention contains 17.0 to 23.0% by volume of heavy catalytically cracked gasoline, preferably 17.5 to 22.0% by volume, and more preferably 18.0 to 21.0% by volume.

[0113] When the gasoline composition according to the present invention contains, among the constituent base materials specified in (6A) to (6C) above, a fraction obtained by hydrogenation of a C6 to C8 fraction obtained from a naphtha cracker specified in (6B) and having an aromatics content of 10.0% by volume or less, and an alkylate, the gasoline composition according to the present invention contains 3.0 to 8.0% by volume, preferably 3.5 to 7.0% by volume, and more preferably 4.0 to 6.0% by volume, of the fraction obtained by hydrogenation of a C6 to C8 fraction obtained from a naphtha cracker and having an aromatics content of 10.0% by volume or less. Furthermore, when the gasoline composition according to the present invention contains an alkylate as defined in (6B) among the base stocks defined in (6A) to (6C) above, the gasoline composition according to the present invention contains the alkylate in an amount of 9.0 to 15.0% by volume, preferably 9.5 to 14.0% by volume, and more preferably 10.0 to 13.0% by volume.

[0114] When the gasoline composition according to the present invention contains the alkylate and heavy catalytically cracked gasoline specified in (6C) of the base stocks specified in (6A) to (6C) above, the gasoline composition according to the present invention contains the alkylate in an amount of 2.0 to 7.0% by volume, preferably 2.5 to 6.0% by volume, and more preferably 3.0 to 5.0% by volume. Furthermore, when the gasoline composition according to the present invention contains the alkylate and heavy catalytically cracked gasoline specified in (6C) among the base stocks specified in (6A) to (6C) above, the gasoline composition according to the present invention contains 1.0 to 6.0% by volume of heavy catalytically cracked gasoline, preferably 1.5 to 5.0% by volume, and more preferably 2.0 to 4.0% by volume.

[0115] The gasoline composition of the present invention contains (6A) a predetermined amount of heavy catalytic cracked gasoline, or (6B) a predetermined amount of a hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker and having an aromatics content of 10.0% by volume or less and an alkylate, or (6C) a predetermined amount of an alkylate and heavy catalytic cracked gasoline, thereby easily exhibiting the desired distillation properties while suppressing an increase in vapor pressure even when a large amount of ethanol is contained.

[0116] The gasoline composition according to the present invention preferably contains a base material component defined in any of (1) to (5) above and a base material component defined in any of (6A) to (6C) above in a total amount of 90.0 to 100.0% by volume, more preferably 91.0 to 100.0% by volume, and even more preferably 92.0 to 100.0% by volume.

[0117] The gasoline composition of the present invention contains the base constituents specified in (1) to (5) above and any of the base constituents specified in (6A) to (6C) above in the above-mentioned ranges in total, so that even when a large amount of ethanol is contained, an increase in vapor pressure can be suitably suppressed and the desired distillation properties can be easily exhibited.

[0118] The gasoline composition according to the present invention may contain, in addition to the base constituents specified in (1) to (5) above and any of the base constituents specified in (6A) to (6C) above, other base constituents that are conventionally known to constitute the gasoline composition, provided that the object of the present invention can be achieved.

[0119] The gasoline composition according to the present invention has (a) a research octane number (RON) of 96.0 or higher, preferably 96.0 to 105.0, and more preferably 96.0 to 103.0.

[0120] By ensuring that the gasoline composition according to the present invention has (a) a research octane number of 96.0 or more, it is possible to easily exhibit excellent anti-knock properties.

[0121] The gasoline composition according to the present invention has (b) a Reid vapor pressure (RVP) of 57.0 to 95.0 kPa, preferably 58.0 to 94.0 kPa, and more preferably 59.0 to 93.0 kPa.

[0122] By ensuring that the (b) Reid Vapor Pressure (RVP) of the gasoline composition of the present invention is within the above range, the amount of evaporative gas can be reduced, and deterioration in cold startability and warm-up performance can be suppressed.

[0123] The gasoline composition according to the present invention has (c) a 70°C distillate of 20.0 to 48.0% by volume, preferably 22.0 to 46.0% by volume, and more preferably 24.0 to 44.0% by volume.

[0124] The gasoline composition of the present invention can easily exhibit the desired distillation characteristics by virtue of (c) the 70°C distillate amount being within the above range.

[0125] The gasoline composition according to the present invention has (d) a 50% by volume distillation temperature of 70.0 to 105.0°C, preferably 73.0 to 103.0°C, and more preferably 76.0 to 100.0°C.

[0126] The gasoline composition according to the present invention can easily exhibit the desired distillation characteristics by virtue of (d) the 50% by volume distillation temperature being within the above range.

[0127] The gasoline composition according to the present invention has a density at 15°C of 0.7300 to 0.7830 g / cm 3 and 0.7320 to 0.7830 g / cm 3 It is preferable that the density is 0.7350 to 0.7830 g / cm 3 It is more preferable that:

[0128] The gasoline composition according to the present invention (e) has a density at 15° C. within the above range, so that a decrease in octane number and an increase in vapor pressure can be easily suppressed.

[0129] The gasoline composition according to the present invention has an aromatic content (aromatic hydrocarbon compound) of 45.0% by volume or less (0.0 to 45.0% by volume), preferably 5.0 to 45.0% by volume, and more preferably 10.0 to 45.0% by volume.

[0130] The gasoline composition of the present invention can easily exhibit a high octane number without deteriorating exhaust gas properties by having the (f) aromatic content (aromatic hydrocarbon compound) content within the above range.

[0131] The gasoline composition according to the present invention has an olefin content (g) of 25.0% by volume or less (0.0 to 25.0% by volume), preferably 3.0 to 25.0% by volume, and more preferably 5.0 to 25.0% by volume.

[0132] The gasoline composition of the present invention can easily exhibit a high octane number by having an olefin content within the above range.

[0133] The gasoline composition according to the present invention can be suitably used as a gasoline composition, particularly in winter.

[0134] According to the present invention, it is possible to provide a novel gasoline composition which, even when it contains a large amount of ethanol, can suppress an increase in vapor pressure and exhibit desired distillation properties.

[0135] Next, the method for producing the gasoline composition according to the present invention will be described. The method for producing a gasoline composition according to the present invention comprises the steps of: A method for producing a gasoline composition, comprising: (1) 0.5 to 7.0 volume percent of C4 fraction, (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) Ethanol is blended at 7.0 to 15.0% by volume, (6A) Heavy catalytic cracking gasoline is blended at 17.0 to 23.0% by volume, or (6B) A mixture of 3.0 to 8.0% by volume of a hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) By blending 2.0 to 7.0% by volume of alkylate and 1.0 to 6.0% by volume of heavy catalytic cracking gasoline, (a) Research octane number of 96.0 or more; (b) Reid vapor pressure is 57.0 to 95.0 kPa; (c) The distillate at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm 3 , (f) Aromatic content of 45.0% by volume or less; (g) Olefin content is 25.0% by volume or less to produce a gasoline composition comprising It is characterized by the above.

[0136] In the process for producing a gasoline composition according to the present invention, the details of the constituent base materials specified in each of (1) to (5) above and the details of the constituent base materials specified in each of (6A) to (6C) above to be blended are as explained above in the description of the gasoline composition according to the present invention. In the method for producing a gasoline composition according to the present invention, the preferred blending ranges of the constituent base materials to be blended as specified in each of the above items (1) to (5) and the preferred blending ranges of the constituent base materials to be blended as specified in any of the above items (6A) to (6C) are also as explained above in the description of the gasoline composition according to the present invention. Furthermore, in the method for producing a gasoline composition according to the present invention, the details of the physical properties (a), (b), (c), (d), (e), (f), and (g) of the gasoline composition obtained are the same as those explained above in the description of the gasoline composition according to the present invention.

[0137] In the method for producing a gasoline composition according to the present invention, a predetermined amount of the base constituent material specified in each of (1) to (5) above and a predetermined amount of the base constituent material specified in any of (6A) to (6C) above are mixed together to prepare a gasoline composition having the physical properties specified in (a), (b), (c), (d), (e), (f), and (g) above. In the method for producing a gasoline composition according to the present invention, the order in which the constituent base materials defined in each of (1) to (5) above and the constituent base materials defined in any of (6A) to (6C) above are mixed is not particularly limited. Furthermore, in the method for producing a gasoline composition according to the present invention, when the constituent base stock specified in (6B) above is blended, the "hydrogenated fraction of a fraction having 6 to 8 carbon atoms obtained from a naphtha cracker, which does not contain aromatic hydrocarbon compounds" and the "alkylate" specified in (6B) above may be mixed in advance and then mixed with the other constituent base stocks, or they may be mixed separately with the other constituent base stocks. Similarly, in the method for producing a gasoline composition according to the present invention, when the constituent base stocks specified in (6C) above are blended, the "alkylate" and "heavy catalytic cracked gasoline" specified in (6C) above may be mixed in advance and then mixed with other constituent base stocks, or each may be mixed separately with other constituent base stocks.

[0138] According to the present invention, there is provided a method for easily producing a novel gasoline composition which can suppress an increase in vapor pressure and exhibit desired distillation properties even when it contains a large amount of ethanol.

[0139] The gasoline composition obtained by the production method according to the present invention can be suitably used as a gasoline composition, particularly in winter.

[0140] The present invention will be described in more detail below with reference to examples. However, these examples are representative examples of the present invention and are not intended to limit the scope of the present invention in any way. The analytical values ​​in the table were measured using the above-mentioned methods. Items marked with "-" are those not measured.

[0141] (Examples 1 to 3, Comparative Example 1, Reference Example 1) In the following examples and comparative examples, the constituent base materials used were a C4 fraction, light catalytically cracked gasoline (base material A), a fraction containing a total of 35% by volume of 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant that produces methyl ethyl ketone using a C4 fraction as a feedstock (base material B), benzene-free light catalytically reformed gasoline (base material C), benzene-free heavy catalytically reformed gasoline (base material D), ethyl tertiary butyl ether (ETBE), ethanol, a hydrogenated fraction of a C6 to C8 fraction obtained from a naphtha cracker that has been dearomatized (base material E), alkylate (base material F), and heavy catalytically cracked gasoline (base material G). The research octane number (RON), Reid vapor pressure (RVP), 70°C distillate (E70), 10% by volume distillate temperature (T10), 50% by volume distillate temperature (T50), 90% by volume distillate temperature (T90), density at 15°C, aromatic content, and olefin content of each of the above constituent base materials are shown in Table 1. The gasoline base stocks described above were mixed in the blending ratios shown in Table 2 to obtain the gasoline compositions of Examples 1 to 3, Comparative Example 1 and Reference Example 1. The research octane number (RON), Reid vapor pressure (RVP), 70°C distillate (E70), 50% by volume distillate temperature (T50), density at 15°C, aromatic content, and olefin content of each gasoline composition obtained are shown in Table 3.

[0142] [Table 1]

[0143] [Table 2]

[0144] [Table 3]

[0145] From Tables 1 to 3, it can be seen that the gasoline compositions obtained in Examples 1 to 3, by containing the specified gasoline base materials within the specified ranges, can exhibit properties similar to those of the gasoline composition described in Reference Example 1, which does not contain ethanol, even when containing a large amount of ethanol at 10.0% by volume, particularly excellent distillation properties such as Reid vapor pressure, 70°C distillate volume, and 50% by volume distillate temperature.

[0146] On the other hand, Tables 1 to 3 show that the gasoline composition obtained in Comparative Example 1 does not contain the specified gasoline base materials within the specified ranges, and therefore contains a large amount of ethanol at 10.0% by volume, and therefore is inferior in distillation properties, particularly in Reid vapor pressure, 70°C distillate amount, and 50% by volume distillate temperature. [Industrial Applicability]

[0147] According to the present invention, there is provided a novel gasoline composition which can suppress an increase in vapor pressure and exhibit desired distillation properties even when it contains a large amount of ethanol, and there is also provided a method for producing the gasoline composition.

Claims

1. (1) 0.5 to 7.0% by volume of C4 fraction; (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) containing 7.0 to 15.0% by volume of ethanol; (6A) Contains 17.0 to 23.0% by volume of heavy catalytic cracking gasoline, (6B) A hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker, containing 3.0 to 8.0% by volume of a fraction having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) Contains 2.0 to 7.0% by volume of alkylate and 1.0 to 6.0% by volume of heavy catalytic cracking gasoline; moreover, (a) a research octane number of 96.0 or more; (b) Reid vapor pressure of 57.0 to 95.0 kPa; (c) the distillate amount at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm ３ , (f) an aromatic content of 45.0% by volume or less; (g) an olefin content of 25.0% by volume or less A gasoline composition comprising:

2. A method for producing a gasoline composition, comprising: (1) 0.5 to 7.0% by volume of C4 fraction; (2) 15.0 to 30.0% by volume of light catalytic cracking gasoline; (3) 2.0 to 8.0% by volume of a fraction containing 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene produced from a plant for producing methyl ethyl ketone using a C4 fraction as a raw material; (4) 35.0 to 55.0% by volume of benzene-free heavy catalytic reformate gasoline; (5) ethanol is blended in an amount of 7.0 to 15.0% by volume, (6A) 17.0 to 23.0% by volume of heavy catalytic cracking gasoline is blended, (6B) A blend of 3.0 to 8.0% by volume of a hydrogenated fraction of a carbon number 6 to 8 obtained from a naphtha cracker and having an aromatic content of 10.0% by volume or less and 9.0 to 15.0% by volume of an alkylate, or (6C) By blending 2.0 to 7.0% by volume of alkylate and 1.0 to 6.0% by volume of heavy catalytic cracking gasoline, (a) a research octane number of 96.0 or more; (b) Reid vapor pressure of 57.0 to 95.0 kPa; (c) the distillate amount at 70°C is 20.0 to 48.0% by volume; (d) 50% by volume distillation temperature is 70.0 to 105.0°C; (e) Density at 15°C is 0.7300 to 0.7830 g / cm ３ , (f) an aromatic content of 45.0% by volume or less; (g) an olefin content of 25.0% by volume or less to produce a gasoline composition comprising A method for producing a gasoline composition comprising:

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