JP4932195B2 - Gasoline composition and method for producing the same - Google Patents

Description

  The present invention relates to a gasoline composition excellent in low-temperature drivability while maintaining a high octane number, and reduced in environmental pollutants released from gasoline itself or discharged as exhaust gas, and a method for producing the same.

  In order to increase the octane number, premium gasoline usually uses many aromatic hydrocarbon base materials having a high octane number. Since this aromatic hydrocarbon base has a high boiling point, it uses a light cracked gasoline, isopentane and alkylate gasoline obtained by distillation separation of catalytically cracked gasoline having a relatively low boiling point and a high octane number. The distillation temperature and the like are adjusted to be low. On the other hand, it is also reported that the distillation temperature is reduced by 90% by using an oxygen-containing gasoline substrate such as ethyl-t-butyl ether (ETBE) and replacing it with a heavy aromatic hydrocarbon substrate ( (See Patent Documents 1 and 2). However, in any of these, by adjusting the hydrocarbon composition, for example, the aromatic hydrocarbon content is actively reduced while maintaining a high octane number, thereby being excellent in low-temperature drivability and released from the gasoline itself. Nothing produces premium gasoline with reduced environmental pollutants emitted as exhaust gas.

Since premium gasoline uses many aromatic hydrocarbon base materials having a high octane number in order to increase the octane number, when an attempt is made to actively reduce the aromatic hydrocarbon content, the octane number generally decreases. For this reason, the octane number may be maintained while reducing the aromatic hydrocarbon content using an oxygen-containing gasoline base material having a high octane number such as ETBE. However, the oxygen-containing gasoline base material may corrode aluminum metal members or the like, or may swell rubber parts such as packings and hoses, and further, the oxygen contained in the oxygen-containing gasoline base material causes the air / fuel ratio of the engine. The ratio of use is limited because it affects the exhaust gas by increasing the amount of NOx. Further, ETBE or the like is less effective in improving low-temperature drivability with respect to lowering of boiling point because it is affected by a shift in the air-fuel ratio of the engine, a decrease in the amount of heat generated, and the like as compared with hydrocarbons. In addition, an expression relating to drivability, which is calculated as a drivability index calculated from the boiling point and oxygen content (for example, DI = 1.5 × T10 + 3.0 × T50 + T90 + 11 × (oxygen weight%), where T10, T50 And T90 are 10% distillation temperature (° C.), 50% distillation temperature (° C.) and 90% distillation temperature (° C.) measured according to ASTM D86.) The operability of gasoline containing a relatively high hydrocarbon content is not necessarily accurately estimated and expressed.
JP 2005-029762 A JP 2004-292511 A

  The present invention provides a gasoline composition and a method for producing the same, which are excellent in low-temperature operability while maintaining a high octane number while actively reducing aromatic hydrocarbon content and reducing the amount of environmental pollutants emitted in exhaust gas. The task is to do.

  The present invention solves the above-mentioned problems in the prior art, and as a result of intensive studies on the composition, physical properties, performance, etc. of the gasoline composition, the present inventors have added it to oxygen-containing gasoline base materials such as ETBE. Thus, a gasoline composition containing a specific hydrocarbon compound with a high octane number in a specific ratio maintains a high octane number while reducing the aromatic hydrocarbon content, and is excellent in low-temperature operability. I came up with the invention.

That is, the present invention contains 5 to 30% by volume of alkylate gasoline, sulfur content is 10 mass ppm or less, benzene is 1% by volume or less, and 2,3,4-trimethylpentane (234TMP) is 4.5 to 9%. .2 volume%, (234TMP) / (234TMP + 2,2,4-trimethylpentane (224TMP)) ratio (volume) is 0.34 or more, aromatic hydrocarbon content is 20-30 volume% , oxygen content is 0.1 2.7% by mass , research octane number of 98 to 104, 50% distillation temperature of 88 to 100 ° C., 90% distillation temperature of 110 to 150 ° C. and hydrocarbon having 6 or less carbon atoms The gasoline composition satisfies the following formula (1), and the acceleration index A satisfies the following formula (2) .

The gasoline composition of the present invention has a research octane number (RON) of 98 to 104, a 50% distillation temperature of 88 to 100 ° C, a 90% distillation temperature of 110 to 150 ° C, and a hydrocarbon having 6 or less carbon atoms. It is preferable that the content satisfies the following formula (1) and the acceleration index A satisfies the following formula (2).
(C4L) + (C5) + (C6) ≧ 42 (1)
Acceleration index A = 7 × (T50) + 3 × (T90) + 13 × (AR) + 8 × (OX) ≦ 1500 (2)
In the above formulas (1) and (2), C4L is the content (capacity%) of hydrocarbons having 4 or less carbon atoms, C5 is the content (capacity%) of hydrocarbons having 5 carbon atoms, and C6 is 6 carbon atoms. Indicates hydrocarbon content (volume%), T50 is 50% distillation temperature (° C), T90 is 90% distillation temperature (° C), AR is aromatic hydrocarbon content (volume%), OX is oxygen content (Mass%) is shown.

Furthermore, the gasoline composition of the present invention preferably has a vapor pressure (Reed vapor pressure) at 37.8 ° C. of 65 kPa or less and a hydrocarbon content of 5 or less carbon atoms satisfying the following formula (3).
4 × (C4L) + (C5) ≦ 42 (3)
In the formula (3), C4L represents the content (volume%) of hydrocarbons having 4 or less carbon atoms, and C5 represents the content (volume%) of hydrocarbons having 5 carbon atoms.

  The present invention also provides 1-50 vol% gasoline, 0-40 vol% toluene, fluid catalytic cracked gasoline obtained by distilling and removing benzene from hydrocarbons having 4-7 carbon atoms contained in catalytic reformed gasoline. The above gasoline composition is obtained by mixing 0-50% by volume of light gasoline having a boiling point of 100 ° C. or less obtained by distillation separation, 5-30% by volume of alkylate gasoline, and 0.3-20% by volume of oxygen-containing gasoline base. It is a manufacturing method to obtain.

  ADVANTAGE OF THE INVENTION According to this invention, the gasoline composition which was excellent in low-temperature drivability, maintaining the high octane number, and reduced discharge | emission of an environmental pollutant can be obtained.

In this gasoline composition, the sulfur content is preferably 10 ppm by mass or less and the lower the sulfur oxide in the exhaust gas, the better. Therefore, the gasoline composition is preferably 5 ppm by mass or less, more preferably 1 ppm by mass or less. The sulfur content in gasoline becomes sulfur oxides in the exhaust gas, poisoning the nitrogen oxide removal catalyst. For this reason, fuel is used to form a reducing atmosphere in order to restore the activity of the nitrogen oxide removal catalyst, causing deterioration of fuel consumption. Therefore, the fuel efficiency improves as the sulfur content in gasoline decreases.
Benzene is 1% by volume or less, and preferably 0.6% by volume or less in terms of exhaust gas properties.

  In addition, the gasoline composition of the present invention contains 2.0% by volume or more of 234TMP as a hydrocarbon component, and more preferably 3.0% by volume or more, and more preferably 4.0% by volume in order to reliably obtain an octane number improving effect. In addition, the (234TMP) / (234TMP + 224TMP) ratio (capacity) is preferably 0.34 or more, and more preferably 0.40 or more, and further preferably 0.50 or more, from the effect of improving the octane number. 224TMP is an isooctane having a so-called octane number (RON) of 100, and 234TMP is a branched paraffin having 8 carbon atoms having an octane number of 2 to 3 higher than that of 224TMP. 234TMP may be introduced into the gasoline composition in any form. However, since 234TMP is relatively contained in the so-called alkylate obtained by alkylating isobutane and butylene together with 224TMP, What is necessary is just to mix | blend alkylate in a ratio that 234TMP becomes the said content in a composition. However, the alkylate obtained by the sulfuric acid method generally contains a large amount of 224TMP, and in many cases, the above (234TMP) / (234TMP + 224TMP) ratio (capacity) does not satisfy 0.34 or more. Therefore, in the preparation of the gasoline composition of the present invention, an alkylate with a high content of 234TMP satisfying a (234TMP) / (234TMP + 224TMP) ratio (capacity) of 0.34 or more may be selected and used. . Although it is not economical at all, 234TMP may be used alone, or an olefin having about 3 to 5 carbon atoms may be combined with one or more isoparaffins having about the same carbon number in some cases. Low polymerization by an appropriate method, and if necessary, hydrogenation to convert unsaturated bonds to stable saturated bonds, or isomerization of paraffins mainly having 8 carbon atoms, high 234TMP content Hydrocarbon oil may be obtained and used. For example, a fraction containing butylene as a main component can be reacted with a solid phosphoric acid catalyst and then reacted with a nickel-molybdenum catalyst to obtain a hydrocarbon having a high 234TMP content. .

  Furthermore, the gasoline composition of the present invention contains 20 to 30% by volume of aromatic hydrocarbons. From the viewpoint of maintaining the octane number and fuel consumption, it is more preferably 21% by volume or more, and even more preferably 22% by volume or more. On the other hand, from the viewpoint of maintaining exhaust gas properties and low-temperature drivability, the aromatic hydrocarbon content is preferably as low as possible, preferably 30% by volume or less, more preferably 29% by volume, and particularly preferably 28% by volume or less. The gasoline composition of the present invention is widely used to obtain a high RON conventionally by finely adjusting the blending amount of oxygen-containing gasoline base and various gasoline bases in consideration of the content of specific components such as 234TMP. Even if the aromatic content that has been reduced is reduced as much as possible, the RON can be secured.

  Furthermore, the gasoline composition of the present invention contains 0.1 to 2.7% by mass, preferably 0.5 to 2.5% by mass of oxygen. As the oxygen-containing compound, a biomass-derived compound is preferably used from the viewpoint of dealing with environmental problems of exhaust gas. Oxygen is introduced into the gasoline composition in the form of an oxygenated gasoline base or in the form of an additive containing a compound having an oxygen atom. However, since the additive content is usually very small, it can be considered that substantially all oxygen content is brought into the oxygenated gasoline base.

  The gasoline composition of the present invention preferably has a RON of 98 to 104, and desirably 90 or more. More preferably, it is 99 or more.

  This gasoline composition has a distillation property in which the 50% distillation temperature is preferably 88 to 100 ° C., more preferably 89 ° C. or more from the aspect of fuel consumption, and further 90 ° C. or more, and 99 ° C. from the low temperature drivability. The following is more preferable, and it is 97 ° C. or lower. The 90% distillation temperature is preferably 110 to 150 ° C., more preferably 115 ° C. or more from the viewpoint of fuel consumption and maintaining the cleanliness of the direct injection engine, and suppression of evaporative gas increase due to an increase in light components, and further 120 ° C. or more. In particular, 122 ° C. or higher is preferable. On the other hand, from a low temperature drivability, 145 ° C. or lower is more preferable, 140 ° C. or lower, particularly 135 ° C. or lower is preferable.

Further, the total content of hydrocarbons having 6 or less carbon atoms represented by the formula (1) is preferably 42% by volume or more from the viewpoint of low-temperature drivability and acceleration, and more preferably 45% by volume or more. Furthermore, the acceleration index A represented by the formula (2) is preferably 1500 or less, more preferably 1400 or less, and further preferably 1350 or less, from the viewpoints of low-temperature drivability and acceleration.
(C4L) + (C5) + (C6) ≧ 42 (1)
Acceleration index A = 7 × (T50) + 3 × (T90) + 13 × (AR) + 8 × (OX) ≦ 1500 (2)
In the above formulas (1) and (2), C4L is the content (capacity%) of hydrocarbons having 4 or less carbon atoms, C5 is the content (capacity%) of hydrocarbons having 5 carbon atoms, and C6 is 6 carbon atoms. Indicates hydrocarbon content (volume%), T50 is 50% distillation temperature (° C), T90 is 90% distillation temperature (° C), AR is aromatic hydrocarbon content (volume%), OX is oxygen content (Mass%) is shown.

The gasoline composition according to the present invention preferably has a vapor pressure (Lead method) of 37.8 ° C. of 65 kPa or less, and preferably at least in the range of 44 to 93 kPa. When the vapor pressure is high, problems such as an increase in evaporation loss, concerns about vapor lock, and an increase in danger are likely to occur. On the other hand, when the vapor pressure is low, low temperature drivability tends to be impaired.
In addition, the gasoline composition of the present invention preferably has a hydrocarbon content of 5 or less carbon atoms that satisfies the following formula (3). Acceleration tends to improve as the amount of light hydrocarbons increases. From the viewpoint of suppressing the increase in evaporation gas (evaporation loss), photochemical smog generation and particulate matter emission due to the increase in light components, the following formula ( 3) is more preferably 41.5 or less, further preferably 41.0 or less, and particularly preferably 40.5 or less.
4 × (C4L) + (C5) ≦ 42 (3)
In the formula, C4L and C5 respectively represent the content (volume%) of hydrocarbons having 4 or less carbon atoms and the content (volume%) of hydrocarbons having 5 carbon atoms, as defined in the above formula (1). Show.

[Gasoline base material]
The gasoline composition of the present invention can be prepared by appropriately selecting a conventional so-called gasoline base material so as to satisfy the above properties and composition, and blending them in combination. Examples of the gasoline base material that can be suitably used in the present invention include the following gasoline base materials.

Catalytic reforming gasoline:
This is a gasoline in which paraffin-based heavy desulfurized naphtha is brought into contact with a precious metal-based reforming catalyst and reformed into a high-octane hydrocarbon oil rich in aromatics and branched hydrocarbons. The gasoline produced by the catalytic reforming reaction may be used as a gasoline base material simply by adjusting the vapor pressure, but light fractions may be obtained by separating or distilling benzene and C7-8 aromatics. And a heavy fraction may be used, or a fraction obtained by combining these may be used. For example, gasoline obtained by distilling and removing benzene from hydrocarbons having 4 to 7 carbon atoms contained in catalytic reformed gasoline (herein sometimes abbreviated as PFM-N) can be preferably used. Moreover, gasoline (PX-C8H) obtained by distilling and separating hydrocarbons having 8 or more carbon atoms contained in catalytic reformed gasoline can also be used.

Catalytic cracking gasoline:
Catalytic cracking gasoline (FCCG) uses a catalyst such as amorphous silica alumina, zeolite, etc. In addition to petroleum fractions from light oil to vacuum gas oil, while it is obtained from heavy oil indirect desulfurization equipment, from degasification oil, heavy oil direct desulfurization equipment It is a gasoline base having a high octane number obtained by catalytic cracking of the directly degassed heavy oil, atmospheric residue oil and the like obtained. In particular, the light fraction (FCCGL) separated by distillation is one of the gasoline bases with the highest RON among the corresponding low-boiling fraction gasoline. When the sulfur content is high, it can be hydrorefined and desulfurized. However, since the high octane number olefin is saturated and the octane number decreases, it is preferable to desulfurize by a method such as washing or adsorption.

Isomerized gasoline:
It is a gasoline base material obtained by skeletal isomerization treatment that converts normal paraffin such as desulfurized light naphtha into higher-octane isoparaffin. The isomerization method is not particularly limited, but a method of isomerization using a solid acid catalyst or the like under a hydrogen atmosphere can be generally used. As a catalyst, platinum is added to chlorinated alumina which has been conventionally used. "Platinum chlorinated alumina" supporting platinum, "Platinum zeolite" supporting platinum on zeolite, "Platinum sulfate zirconia" supporting platinum on a support containing zirconia and sulfuric acid, Support containing oxide components of zirconia and tungsten A solid acid typified by “platinum tungstate zirconia” carrying platinum on it is preferably used.

Alkylate gasoline:
The alkylate gasoline (ALKG) is a gasoline base material containing a large amount of isooctane (typically 224TMP) having a high octane number obtained by alkylating with butylene and isobutane as a catalyst using sulfuric acid or hydrofluoric acid. The raw materials are not limited to butylene and isobutane, and olefins and isoparaffins having about 4 carbon atoms can also be used. Since it contains a relatively large amount of 234TMP compared to other gasoline base materials, it is a gasoline base material that can be suitably used to prepare the gasoline composition of the present invention.

Oxygenated gasoline base:
As the oxygen-containing gasoline base material, for example, alcohols having 2 to 5 carbon atoms and ethers having 4 to 8 carbon atoms are suitable. Specifically, alcohols such as ethanol, propyl alcohols, butyl alcohols, and the like Derivatives from alcohols such as ethers and esters, ethyl isopropyl ether, methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether (ETBE), ethyl secondary butyl ether (ESBE), diisopropyl ether, tertiary amyl ethyl Examples include ether (TAEE), ethyl acetate, ethyl propionate, and the like. In particular, ETBE is a preferred base material that has a higher octane number improving effect per oxygen content than ethanol and MTBE, and can increase the octane number without deteriorating volatility by mixing ETBE.

  If the amount of these oxygen-containing compounds is too small, the effect of improving the octane number is small. If the amount of these oxygen-containing compounds is too large, impurities such as moisture are accompanied, causing troubles such as corrosion of piping and sealing materials. For example, if it is contained in a large amount in the fuel, water may be concentrated in the automobile fuel tank and accumulate, which may have an adverse effect. Furthermore, the air / fuel ratio of the existing engine will deviate from the optimum value, resulting in excess oxygen. There is a drawback in that the amount of nitrogen oxides (NOx) in the exhaust gas increases because it makes a difference. Further, since oxygen-containing compounds generally have a lower calorific value than other gasoline base materials and may reduce fuel consumption, it is not preferable to use too much.

Aromatic hydrocarbon compounds:
In general, aromatic hydrocarbon compounds are not preferred gasoline components from the viewpoint of the environment, and in particular, benzene has health problems. Aromatics having 7 to 8 carbon atoms are important as petrochemical raw materials, but are hydrocarbon compounds having an extremely high octane number, and have the effect of improving the octane number of gasoline. In particular, toluene is one of the convenient gasoline base materials for improving the octane number of gasoline.

Other gasoline bases:
In preparing the gasoline composition of the present invention, the gasoline base material that can be used is not limited to the above-mentioned base material, and desulfurized light naphtha, for example, a gasoline fraction produced or by-produced in the petrochemical field. Minute hydrocarbon oils can be used. For example, liquefied petroleum gas or isopentane having a high butane fraction can be used as appropriate because of its relatively high octane number. Moreover, you may mix | blend 234TMP itself which is a characteristic compound as a structural component of the gasoline composition of this invention as a gasoline base material. If a hydrocarbon oil containing a high content of 234TMP is obtained through low polymerization of olefins near 4 carbon atoms, alkylation with isoparaffin, etc., and further hydrogenation and isomerization if necessary, It can be preferably used as a gasoline base material for preparing a gasoline composition.
The gasoline base used for the preparation of the gasoline composition of the present invention including other gasoline bases preferably has a sulfur content of 10 mass ppm or less, more preferably 5 mass ppm or less, and particularly preferably 1 mass. ppm or less.

[Combination]
The present invention does not particularly define the gasoline base material and its blending amount as long as it is formulated and prepared so as to obtain a gasoline composition satisfying the above physical properties and component composition. 1-50% by volume of gasoline (PFM-N) obtained by distilling and removing benzene from hydrocarbons having 4-7 carbon atoms contained in reformed gasoline, preferably 5-47% by volume, catalytic cracking gasoline (FCCG) 0-50 vol%, preferably 5-47 vol%, toluene 0-40 vol%, preferably 1-35 vol%, alkylate gasoline (ALKG) 5 30% by volume, preferably 10 to 27% by volume, and 0.3 to 20% by volume, preferably 0.5 to 15% by volume, of an oxygen-containing gasoline base material can be prepared. That.

〔Additive〕
Furthermore, the gasoline composition of the present invention may contain one or more fuel oil additives known in the art as needed. Although these compounding quantities can be selected suitably, it is preferable to maintain the total compounding quantity of an additive to 0.1 weight% or less normally. Examples of fuel oil additives that can be used in the gasoline composition of the present invention include phenol-based and amine-based antioxidants, Schiff-type compounds, metal deactivators such as thioamide-type compounds, and organic phosphorus-based compounds. Surface ignition inhibitor, detergent dispersants such as succinimide, polyalkylamine, polyetheramine, anti-icing agent such as polyhydric alcohol or its ether, alkali metal salt or alkaline earth metal salt of organic acid, higher alcohol And a colorant such as an azo dye, an antistatic agent such as an anionic surfactant, a cationic surfactant and an amphoteric surfactant.

  Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited to these examples.

  Gasoline base materials having the properties shown in Table 1 were prepared and blended at the mixing ratio (volume%) shown in the upper part of Table 2 to prepare gasoline compositions as Examples and Comparative Examples. The gasoline base used was prepared as follows.

ALKG1:
An alkylate (ALKG1) containing isooctane as a main component was obtained by subjecting a fraction containing butylene as a main component and a fraction containing isobutane as a main component to an alkylation reaction at 10 ° C. using a sulfuric acid catalyst.
ALKG2:
234TMP (38 parts by volume) was mixed with the ALKG1 (100 parts by volume) to obtain an adjusted alkylate (ALKG2) containing 234TMP at a high concentration. A reagent was used for 234TMP.

FCCGL:
Desulfurized light oil and desulfurized heavy oil are decomposed with a solid catalyst using a fluidized bed reactor to obtain hydrocarbon oils with high olefin content (fluid catalytic cracking gasoline: FCCG), which are converted into light and heavy fractions. It is a light fraction (FCCGL) obtained by distillation separation.

PFM-N:
Catalytic reforming gasoline obtained by treating desulfurized heavy naphtha with a bimetallic catalyst moving bed catalytic reformer, and catalytically reforming a light fraction mainly composed of hydrocarbons having 4 to 7 carbon atoms It was obtained by distilling and removing benzene from gasoline.
PX-C8H:
The catalytic reformed gasoline was fractionally distilled to obtain hydrocarbons having 8 or more carbon atoms by distillation.

toluene:
After extracting the aromatics contained in the catalytic reformed gasoline, precision distillation was performed to obtain toluene having a purity of about 99% by mass.
ETBE:
Ethanol and isobutylene were reacted using an ion exchange resin catalyst (Amberlyst-15), and then purified by a distillation method to obtain ETBE having a purity of 95% or more.

The properties of the gasoline base materials and the gasoline compositions of Examples and Comparative Examples shown in Tables 1 and 2 were measured by the following method.
Distillation properties: JIS K 2254 "Petroleum products-Distillation test method"
Vapor pressure (RVP): JIS K 2258 "Crude oil and fuel oil-Vapor pressure test method-Reed method"
Octane number (RON): JIS K 2280 “Petroleum products—Fuel oil—Octane number and cetane number test method and cetane index calculation method” research method Octane number test method Sulfur content: JIS K 2541 “Crude oil and petroleum products—Sulfur content test method” In accordance with the microcoulometric titration oxidation method, it was determined to one digit after the decimal point.
Density: JIS K 2249 "Crude oil and petroleum products-Density test method"

Benzene, composition component having 6 or less carbon atoms, trimethylpentanes and aromatic hydrocarbon content: All components were measured by a gas chromatography method of JIS K 2536 “Petroleum products—component test method”.
Column tank conditions:
Material: Methyl silicone Initial temperature 5 ° C., holding time 10 minutes, heating rate 2 ° C./min, final temperature 140 ° C.
Gas conditions: flow rate 2 ml / min, split ratio 50: 1, makeup amount 50 ml / min,
Sample injection volume: 0.5 μL
Oxygen content: Calculated based on the proportion of oxygen atoms contained in ETBE and the blending amount of ETBE.

Furthermore, the acceleration performance test by one test vehicle A was implemented using the chassis dynamo apparatus using the gasoline composition of Examples 1-4 and Comparative Examples 1 and 2. In the test, after the vehicle was kept in a cold machine (25 ° C.) state, when the accelerator opening was accelerated up to 50% by the automatic driving device (Horiba Seisakusho, ADS7000), the initial speed was 0 to 50 ( km / hour) until the vehicle speed was reached. The results (acceleration time increase rate) were compared based on the difference in acceleration time relative to the arrival time when the fuel of Comparative Example 1 was used. The results are also shown in Table 2.
The acceleration time increase rate of the test gasoline was obtained by the following formula.
Acceleration time increase rate = (arrival time of test gasoline-arrival time of comparative example 1) / (arrival time of comparative example 1) x 100

Claims (3)

5-30% by volume of alkylate gasoline, sulfur content is 10 mass ppm or less, benzene is 1% by volume or less, 2,3,4-trimethylpentane is 4.5-9.2 % by volume, (2,3 , 4-trimethylpentane) / (2,3,4-trimethylpentane + 2,2,4-trimethylpentane) ratio (volume) is 0.34 or more, aromatic hydrocarbon content is 20-30% by volume, oxygen content is Carbonization of 0.1 to 2.7% by mass, research octane number of 98 to 104, 50% distillation temperature of 88 to 100 ° C., 90% distillation temperature of 110 to 150 ° C. and carbon number of 6 or less A gasoline composition characterized in that the hydrogen content satisfies the following formula (1), and the acceleration index A satisfies the following formula (2) .
(C4L) + (C5) + (C6) ≧ 42 (1)
Acceleration index A = 7 × (T50) + 3 × (T90) + 13 × (AR) + 8 × (OX) ≦ 1500 (2)
(Here, C4L is the content (capacity%) of hydrocarbons having 4 or less carbon atoms, C5 is the content (capacity%) of hydrocarbons having 5 carbon atoms, and C6 is the content (capacity of hydrocarbons having 6 carbon atoms). T50 represents a 50% distillation temperature (° C.), T90 represents a 90% distillation temperature (° C.), AR represents an aromatic hydrocarbon content (volume%), and OX represents an oxygen content (mass%). ) The gasoline composition according to claim 1 , wherein the vapor pressure (37.8 ° C) is 65 kPa or less and the content of hydrocarbons having 5 or less carbon atoms satisfies the following formula (3).
4 × (C4L) + (C5) ≦ 42 (3)
(Here, C4L represents the content (volume%) of hydrocarbons having 4 or less carbon atoms, and C5 represents the content (volume%) of hydrocarbons having 5 carbon atoms.) 1 to 50 vol% gasoline obtained by distilling and removing benzene from 4 to 7 carbon atoms contained in catalytic reformed gasoline, 0 to 40 vol% toluene, obtained by distilling fluid catalytic cracking gasoline The gasoline composition according to claim 1 or 2 , wherein 0 to 50% by volume of light gasoline having a boiling point of 100 ° C or less, 5 to 30% by volume of alkylate gasoline, and 0.3 to 20% by volume of oxygen-containing gasoline base material are mixed. A method for producing a gasoline composition, comprising obtaining a product.