JP7078523B2 - Fuel oil composition for external combustion engine and its manufacturing method - Google Patents

Description

The present invention relates to a fuel oil composition for an external combustion engine and a method for producing the same.

Kerosene (JIS K 2203), A heavy oil (JIS K 2205 type 1 heavy oil) and C heavy oil (JIS K 2205) are mainly used as fuel oil compositions for external fuel oils for boilers, hot air heaters, industrial furnaces, etc. 3 types of heavy oil) are used.

Kerosene has an extremely low content of sulfur, nitrogen, and residual carbon, and has a characteristic that the environmental load due to combustion is small. In addition, because of its excellent low-temperature fluidity, it has excellent combustibility even when used in an external combustion engine equipped with a hydraulic spray burner with a low rated combustion amount and low spray hydraulic pressure in cold regions during the severe cold season. Demonstrate. However, in cold regions in winter, there is a large demand for kerosene such as indoor heating, and special consideration is required for stable supply.
Heavy oil A generally has excellent supply stability and has an advantage of having a higher calorific value than kerosene. However, for heavy fuel oil A, it may be necessary to take measures such as equipment measures in order to prevent filter blockage due to wax precipitation in the severe cold season of cold regions. Further, when the heavy oil A is used for an external combustion engine equipped with a hydraulic spray type burner having a small rated combustion amount and a low spray hydraulic pressure, it is necessary to improve the combustibility.
C heavy oil has a higher calorific value than A heavy oil. However, since it has a high viscosity, it is inconvenient to handle because a heating facility is required at the time of use. In addition, C heavy oil has low combustibility, so it cannot be used for external combustion engines equipped with a hydraulic spray burner with a low rated combustion amount and low spray hydraulic pressure, and has high sulfur content, nitrogen content, and residual carbon content. It has the disadvantage of having a large environmental load.

For the purpose of contributing to the stable supply of the fuel oil composition for external combustion engines in winter, the present inventors have shown excellent stability in long-term storage and excellent in cold regions in extremely cold seasons. A fuel oil composition for an external combustion engine that exhibits low-temperature fluidity, exhibits excellent combustibility even in an external combustion engine equipped with a hydraulic spray type burner with a low rated combustion amount and a low spray hydraulic pressure, and can be obtained with a high yield. (See Patent Documents 1 to 3).

Japanese Unexamined Patent Publication No. 2004-182744 Japanese Unexamined Patent Publication No. 2004-182745 JP-A-2017-114948

However, the fuel oil composition described in the above patent document is desired to improve fuel efficiency by improving the calorific value as well as further stabilizing the supply of the fuel oil composition for an external combustion engine, especially in winter. It is not possible to respond sufficiently.

Therefore, the present invention exhibits excellent low-temperature fluidity even in cold regions during the severe cold season, and also exhibits excellent combustibility even in an external combustion engine equipped with a hydraulic spray burner having a small rated combustion amount and a low spray oil pressure. Furthermore, it is an object of the present invention to provide a fuel oil composition for an external combustion engine, which is capable of stable supply with a high yield and can contribute to improvement of fuel efficiency by having a high calorific value.

As a result of diligent studies in view of the above problems, the present inventors have found that the following invention can solve the problem. That is, the present invention provides a fuel oil composition for an external combustion engine having the following configuration and a method for producing the same.

[1] Heavy kerosene distillate satisfying all of the following (a ₁ ) to (e ₁ ), which contains 90.0% by volume or more of the direct distillate obtained by atmospheric distillation of crude oil and hydrodesulfurized. A fraction, an aromatic hydrocarbon oil satisfying all of the following (a ₂ ) to (f ₂ ), and an antioxidant, and the content of the aromatic hydrocarbon oil based on the total amount of the composition. Is 3.0% by volume or more and 23.0% by volume or less, and the content of the antioxidant based on the total amount of the composition is 20% by mass or more and 100% by mass or less. A fuel oil composition for hydrocarbons that is also satisfying.
( _{A 1} ) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (b ₁ ) Initial distillation point is 140.0 ° C or higher (c ₁ ) Ignition point is 40.0 ° C or higher (d ₁ ) Sulfur content is 3% by mass or more and 10% by mass or less (e ₁ ) Cloudy point is -20.0 ° C or less (a ₂ ) Aroma content is 99.0% by mass or more (b ₂ ) Sulfur content Is 0.01% by mass or less (c ₂ ) The cloudiness point is -50.0 ° C or less (d ₂ ) The kinematic viscosity at 30 ° C is 1.600 mm ² / s or less (e ₂ ) The density at 15 ° C is 0.9000 g / cm ³ or more (f ₂ ) Ignition point is 50.0 ° C or higher (1) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (2) Initial distillation point is 140.0 ° C or higher (3) Ignition point is 40.0 ° C or higher (4) Sulfur content is 3% by mass or more and 10% by mass or less (5) Cloudy point is -20.0 or less (6) Total calorific value is 37,000 (kJ / L) [2] Heavy kerosene satisfying all of the following (a ₁ ) to (e ₁ ), which contains 90.0% by mass or more of the direct distillate obtained by atmospheric distillation of crude oil and hydrocarbonized and desulfurized. The content of the distillate, the aromatic hydrocarbon oil satisfying all of the following (a ₂ ) to (f ₂ ), and the antioxidant is 3 based on the total amount of the composition of the aromatic hydrocarbon oil. All of the following (1) to (6) are blended so that the content of the antioxidant is 20% by mass or more and 100% by mass or less based on the total amount of the composition of the antioxidant. Satisfactory method for producing a fuel oil composition for an external combustion machine.
( _{A 1} ) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (b ₁ ) Initial distillation point is 140.0 ° C or higher (c ₁ ) Ignition point is 40.0 ° C or higher (d ₁ ) Sulfur content is 3% by mass or more and 10% by mass or less (e ₁ ) Cloudy point is -20.0 ° C or less (a ₂ ) Aroma content is 99.0% by mass or more (b ₂ ) Sulfur content Is 0.01% by mass or less (c ₂ ) The cloudiness point is -50.0 ° C or less (d ₂ ) The kinematic viscosity at 30 ° C is 1.600 mm ² / s or less (e ₂ ) The density at 15 ° C is 0.9000 g / cm ³ or more (f ₂ ) Ignition point is 50.0 ° C or more (1) 95% by mass distillation temperature is 271.0 ° C or more and 300.0 ° C or less (2) Initial distillation point is 140.0 ° C or more (3) Ignition point is 40.0 ° C or higher (4) Sulfur content is 3% by mass or more and 10% by mass or less (5) Cloudy point is -20.0 ° C or less (6) Total calorific value is 37,000 (kJ / L) )that's all

According to the present invention, excellent low-temperature fluidity is exhibited even in a cold region in a severe cold season, and excellent combustibility is exhibited even in an external combustion engine equipped with a hydraulic spray type burner having a small rated combustion amount and a low spray oil pressure. Further, it is possible to provide a fuel oil composition for an external combustion engine, which can be stably supplied with a high yield and can contribute to the improvement of fuel efficiency by having a high calorific value.

Hereinafter, a fuel oil composition for an external combustion engine according to an embodiment of the present invention (hereinafter, may be simply referred to as “the present embodiment”) and a method for producing the same will be specifically described. In addition, in this specification, the numerical values relating to "less than or equal to", "greater than or equal to" and "to" regarding the description of the numerical range are numerical values that can be arbitrarily combined, and the numerical values of Examples are used as upper limit values or lower limit values. It is a numerical value to be obtained.

[Fuel oil composition for external combustion engine]
The fuel oil composition for an external fuel according to the present embodiment is a heavy kerosene distiller having specific properties, containing 90.0% by volume or more of a distillate obtained by hydrocarbonizing and desulfurizing a direct distillate obtained by atmospheric distillation of crude oil. It contains a fraction, an aromatic hydrocarbon oil having specific properties, and an antioxidant, and the content of the aromatic hydrocarbon oil based on the total amount of the composition is 3% by volume or more and 23% by volume or less. The fuel oil composition has a content of 20% by mass or more and 100% by mass or less based on the total amount of the composition of the hydrocarbon, and satisfies all of the following (1) to (6).
(1) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (2) Initial distillation point is 140.0 ° C or higher (3) Flash point is 40.0 ° C or higher (4) Sulfur content 3 mass ppm or more and 10 mass ppm or less (5) Cloud point is -20.0 ° C or less (6) Total calorific value is 37,000 (kJ / L) or more

(Composition and properties of fuel oil composition for external combustion engine)
The fuel oil composition for an external combustion engine of the present embodiment satisfies all of the compositions and properties specified in the following (1) to (6).
(1) 95% by volume distilling temperature The 95% by volume distilling temperature of the fuel oil composition for an external combustion engine of the present embodiment is 271.0 ° C. or higher and 300.0 ° C. or lower. If the 95% by volume distillation temperature is not within the above range, an excellent yield cannot be obtained. When the 95% by volume distillation temperature of the fuel oil composition for an external combustion engine is 271.0 ° C. or higher, the boiling point range is higher than the 95% by volume distillation temperature (270 ° C. or lower) of kerosene. Since it is wider than the boiling point range, an excellent yield can be obtained. The 95% by volume distillation temperature of the fuel oil composition for an external combustion engine of the present embodiment depends on the 95% by volume distillation temperature of the distillate as a constituent. In the present embodiment, the 95% by volume distilling temperature is 271.0 ° C. or higher and 300.0 ° C. or lower, which is wider than the boiling point range of kerosene, and the direct distillate having a higher yield from crude oil than kerosene is hydrodesulfurized. By using a heavy kerosene fraction containing 90.0% by volume or more of the desulfurized fraction as an essential component, it is possible to increase the yield of the fuel oil composition for an external fuel machine of the present embodiment as a result. rice field.
From the viewpoint of improving the yield, the 95% by volume distillation temperature is preferably 273.0 ° C. or higher, more preferably 275.0 ° C. or higher, and the upper limit is preferably 290.0 ° C. or lower, more preferably 285. It is 0 ° C. or lower.
In the present specification, the 95% by volume distillation temperature, and the initial distillation point and the end point described later are values measured according to JIS K2254: 1998 (Petroleum product-distillation test method-).

(2) Initial distilling point The initial distilling point of the fuel oil composition for an external combustion engine of the present embodiment is 140.0 ° C. or higher. If the initial distillate is not within the above range, handling safety will be reduced. From the viewpoint of improving handling safety, it is preferably 143.0 ° C or higher, more preferably 145.0 ° C or higher, and the upper limit is preferably 160.0 ° C or lower from the viewpoint of improving the yield. Yes, more preferably 155.0 ° C. or lower.

(3) Flash point The flash point of the fuel oil composition for an external combustion engine of the present embodiment is 40.0 ° C. or higher. If the flash point is not 40.0 ° C or higher, the handling safety will be reduced. From the viewpoint of improving handling safety, the flash point is preferably 42.0 ° C. or higher, more preferably 45.0 ° C. or higher, still more preferably 48.0 ° C. or higher.
In the present specification, the flash point is a value measured according to JIS K 2265-1: 2007 (crude oil and petroleum products-flash point test method-Part 1: tag sealing method).

(4) Sulfur content The sulfur content of the fuel oil composition for an external combustion engine of the present embodiment is 3% by mass or more and 10% by mass or less. If the sulfur content is not within the above range, it becomes difficult to maintain storage stability, and corrosion may occur due to an increase in sulfur oxides in the exhaust gas. From the viewpoint of improving storage stability and suppressing the occurrence of corrosion, the sulfur content is preferably 8.0 mass ppm or less, more preferably 6.0 mass ppm or less, and the lower limit is preferably 4.0. It is mass ppm or more.
In the present specification, the sulfur content is a value measured according to JIS K2541-7: 2003 (crude oil and petroleum products-sulfur content test method-Part 7: wavelength-dispersed fluorescent X-ray method).

(5) Cloud point The cloud point of the fuel oil composition for an external combustion engine of the present embodiment is -20.0 ° C. or lower. If the cloud point is not within the above range, the low temperature fluidity is lowered, the filter is likely to be clogged with the precipitated wax, and it is necessary to take measures such as heat insulation. From the viewpoint of suppressing filter clogging by improving low-temperature fluidity in cold winters and eliminating the need for equipment such as heat retention, it is preferably -22.0 ° C or lower, more preferably -23.0 ° C or lower. The lower limit is not particularly limited, but is usually -40.0 ° C or higher.
In the present specification, the cloud point is a value measured according to JIS K2269: 1987 (pour point of crude oil and petroleum products and cloud point test method).

(6) Total calorific value The total calorific value of the fuel oil composition for an external combustion engine of the present embodiment is 37,000 (kJ / L) or more. If the total calorific value is not within the above range, the fuel consumption is lowered and it becomes difficult to improve the fuel consumption. From the viewpoint of further improving fuel efficiency, the total calorific value is 37,100 (kJ / L) or more, more preferably 37,200 (kJ / L) or more.
In the present specification, the total calorific value is measured and estimated according to JIS K2279: 2003 (crude oil and petroleum products-calorific value test method and estimation method by calculation-) ("6. Total calorific value estimation method, 6. 3 e) It is a value estimated by the calculation formula in the case of crude oil, kerosene, light oil, A heavy oil and B heavy oil specified in 1).

Further, the fuel oil composition for an internal combustion engine of the present embodiment may satisfy at least one selected from the following (7) to (12) in addition to the above-mentioned properties and compositions (1) to (6). It is preferable that all of the following (7) to (12) are particularly satisfied.
(7) Petroleum Product Reaction Test In the fuel oil composition for an external combustion engine of the present embodiment, it is preferable that the result of the petroleum product-reaction test according to JIS K 2252: 1998 is neutral. By being neutral, it prevents corrosion of various devices that the fuel oil composition for external combustion engine of the present embodiment comes into contact with, for example, fuel oil tanks, pipes, diesel engines, and auxiliary machines such as equipped pumps. Therefore, stable operation of the external combustion engine becomes possible more easily.

(8) Moisture content The moisture content of the fuel oil composition for an external combustion engine of the present embodiment is preferably 0.01% by volume or less. When the water content is within the above range, it is possible to suppress deterioration of storage stability (sludge formation by emulsion of asphaltene and water), freezing, etc., and prevent clogging of the filter.
In the present specification, the water content is a value measured according to JIS K 2275-3: 2015 (crude oil and petroleum products-how to obtain water-Part 3: Karl Fischer titration method).

(9) Ash content The ash content of the fuel oil composition for an external combustion engine of the present embodiment is preferably 0.001% by mass or less. When the amount of ash is within the above range, the wear of the burner tip can be further suppressed, and the environmental load due to the exhaust gas can be reduced.
In the present specification, the ash content is a value measured according to JIS K 2272: 1998 (crude oil and petroleum products-ash content and sulfate ash content test method-).

(10) Dynamic Viscosity at 30 ° C. The kinematic viscosity of the fuel oil composition for an external combustion engine of the present embodiment at 30 ° C. is preferably 1.300 mm ² / s or more, more preferably 1.350 mm ² / s or more, and further. It is preferably 1.375 mm ² / s or more, and the upper limit is preferably 1.700 mm ² / s or less, more preferably 1.600 mm ² / s or less, and further preferably 1.500 mm ² / s or less. When the kinematic viscosity at 30 ° C. is within the above range, it becomes easy to adapt the fuel oil composition for an external combustion engine to the specification range of various devices such as a pump and a flow meter, and the combustibility is improved.
In the present specification, the kinematic viscosity at 30 ° C. is a value measured according to JIS K 2283: 2000 (kinetic viscosity test method for crude oil and petroleum products).

(11) Density at 15 ° C. The density of the fuel oil composition for an external fuel according to the present embodiment at 15 ° C. is preferably 0.8000 g / cm ³ or more, more preferably 0.8020 g / cm ³ or more, still more preferably. 0.8050 g / cm ³ or more, more preferably 0.8100 g / cm ³ or more, and the upper limit is preferably 0.8200 g / cm ³ or less, more preferably 0.8190 g / cm ³ or less, still more preferably 0. It is 8150 g / cm ³ or less. When the density at 15 ° C. is within the above range, the yield is improved and the combustibility is also improved.
In the present specification, the density at 15 ° C. is a value measured according to JIS K 2249-1: 2011 (crude oil and petroleum products-how to determine the density-Part 1: vibration method).

(12) Composition The saturation content of the fuel oil composition for an external combustion engine of the present embodiment based on the total amount of the composition is preferably 60.0% by volume or more, more preferably 63.0% by volume or more, still more preferably 65. It is 0% by volume or more, and the upper limit is preferably 85.0% by volume or less, more preferably 80.0% by volume or less, and further preferably 75.0% by volume or less. The olefin content is preferably 0.3% by volume or less, more preferably 0.1% by volume or less. The 1-ring aromatic content is preferably 35.0% by volume or less, more preferably 31.0% by volume or less, further preferably 28.5% by volume or less, and the lower limit is preferably 18.0% by volume or more. It is preferably 21.5% by volume or more. The bicyclic aromatic content is preferably 5.0% by volume or less, more preferably 3.0% by volume or less, still more preferably 2.0% by volume or less, and the lower limit is not particularly limited, but usually 1. It is 0% by volume or more. The tricyclic aromatic content is preferably 1.5% by volume or less, more preferably 1.3% by volume or less, still more preferably 0.9% by volume or less, and the lower limit is not particularly limited, but is usually 0. .4 Volume% or more. When the content of these components is within the above range, the combustibility is particularly improved.
In the present specification, the saturated component, the olefin component, the 1-ring aromatic component, the 2-ring aromatic component and the 3-ring aromatic component are defined in JPI-5S-49-2007 as a petroleum product-hydrocarbon type. Test method-Value measured by high performance liquid chromatography method.

(Heavy kerosene fraction)
The fuel oil composition for an external fuel according to the present embodiment is a distillate obtained by hydrodesulfurizing a direct distillate obtained by atmospheric distillation of crude oil (hereinafter, may be referred to as "hydrodesulfurized distillate"). Contains 90.0% by volume or more of a heavy kerosene fraction that satisfies all of the following (a ₁ ) to (e ₁ ). If the above-mentioned heavy kerosene fraction is not contained, excellent low-temperature fluidity and combustibility cannot be obtained, stable supply cannot be obtained with a high yield, and fuel efficiency can be improved by a high calorific value. The form of fuel oil composition for external combustion engine cannot be obtained.
( _{A 1} ) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (b ₁ ) Initial distillation point is 140.0 ° C or higher (c ₁ ) Ignition point is 40.0 ° C or higher (d ₁ ) Sulfur content is 3% by mass or more and 10% by mass or less (e ₁ ) Clouding point is -20.0 ° C or less

The hydrodesulfurization conditions for obtaining a hydrodesulfurized fraction by hydrodesulfurizing the straight distillate are as follows, for example. By setting the following hydrodesulfurization conditions, a hydrodesulfurized fraction can be obtained more easily.
Reaction temperature; 250 ° C or higher and 390 ° C or lower, preferably 300 ° C or higher and 350 ° C or lower Hydrogen partial pressure; 1.0 MPa or higher and 10.0 MPa or lower, preferably 2.0 MPa or higher and 5.0 MPa or lower Hydrogen / raw material oil ratio; 50 Nm ³ / kL or more and 500 Nm ³ / kL or less, preferably 100 Nm ³ / kL or more and 300 Nm ³ / kL or less,
Liquid space velocity; 0.1 hr ^-1 or more and 10.0 hr ^-1 or less, preferably 1.0 hr ^-1 or more and 8.0 hr ^-1 or less

( _{A 1} ) 95% by volume distilling temperature The 95% by volume distilling temperature of the heavy kerosene distillate used in this embodiment is 271.0 ° C. or higher and 300.0 ° C. or lower. As described above, by using a heavy kerosene fraction having a 95% by volume distillation temperature in the above range and a boiling point range wider than that of kerosene, as a result, the yield of the fuel oil composition for an external combustion engine of the present embodiment is obtained. Can be improved. From the viewpoint of improving the yield, the 95% by volume distillation temperature is preferably 273.0 ° C. or higher, more preferably 275.0 ° C. or higher, and the upper limit is preferably 290.0 ° C. or lower, more preferably 280. It is 0 ° C. or lower.

(B ₁ ) Initial distilling point The initial distilling point of the heavy kerosene distillate used in this embodiment is 140.0 ° C. or higher. If the initial distillate is not within the above range, handling safety will be reduced. From the viewpoint of improving handling safety, it is preferably 143.0 ° C or higher, more preferably 145.0 ° C or higher, and the upper limit is preferably 160.0 ° C or lower from the viewpoint of improving the yield. Yes, more preferably 155.0 ° C. or lower.

(C ₁ ) Flash point The flash point of the heavy kerosene fraction used in this embodiment is 40.0 ° C. or higher. If the flash point is not within the above range, handling safety will be reduced. From the viewpoint of improving handling safety, the flash point is preferably 42.0 ° C. or higher, more preferably 45.0 ° C. or higher.

(D ₁ ) Sulfur content The sulfur content of the heavy kerosene fraction used in this embodiment is 3% by mass or more and 10% by mass or less. If the sulfur content is not within the above range, it becomes difficult to maintain storage stability, and corrosion may occur due to an increase in sulfur oxides in the exhaust gas. From the viewpoint of improving storage stability and suppressing the occurrence of corrosion, the sulfur content is preferably 8 mass ppm or less, more preferably 6 mass ppm or less, and the lower limit is preferably 4 mass ppm or more.

(E ₁ ) Cloud point The cloud point of the heavy kerosene fraction used in this embodiment is -20.0 ° C or lower. If the cloud point is not within the above range, the low temperature fluidity is lowered, the filter is likely to be clogged with the precipitated wax, and it is necessary to take measures such as heat insulation. From the viewpoint of suppressing filter clogging by improving low-temperature fluidity in cold winters and eliminating the need for equipment such as heat retention, the temperature is preferably -21.0 ° C or lower, and the lower limit is not particularly limited. However, it is usually -40.0 ° C or higher.

Further, the heavy kerosene fraction used in the present embodiment is at least one selected from the following (f ₁ ) to (h ₁ ) in addition to the above-mentioned properties and composition of (a ₁ ) to (e ₁ ). It is preferable that all of the following (f ₁ ) to (h ₁ ) are particularly satisfied.

(F ₁ ) Dynamic viscosity at 30 ° C. The kinematic viscosity of the heavy kerosene fraction used in the present embodiment at 30 ° C. is preferably 1.300 mm ² / s or more, more preferably 1.400 mm ² / s or more, and further. It is preferably 1.500 mm ² / s or more, and the upper limit is preferably 1.700 mm ² / s or less, more preferably 1.600 mm ² / s or less, and further preferably 1.550 mm ² / s or less. When the kinematic viscosity at 30 ° C. is within the above range, it becomes easy to adapt the fuel oil composition for an external combustion engine to the specification range of various devices such as a pump and a flow meter, and the combustibility is improved.

(G ₁ ) Density at 15 ° C. The density of the heavy kerosene distillate used in the present embodiment at 15 ° C. is preferably 0.7890 g / cm ³ or more, more preferably 0.7920 g / cm ³ or more, still more preferably 0.7920 g / cm 3 or more. It is 0.7940 g / cm ³ or more, and the upper limit is preferably 0.7980 g / cm ³ or less, more preferably 0.7970 g / cm ³ or less. When the density at 15 ° C. is within the above range, the yield is improved and the combustibility is also improved.

(H ₁ ) Composition The saturated content of the heavy kerosene fraction used in the present embodiment based on the total amount of the composition is preferably 70.0% by volume or more, more preferably 75.0% by volume or more, still more preferably 78. It is 0% by volume or more, and the upper limit is preferably 90.0% by volume or less, more preferably 85.0% by volume or less, and further preferably 83.0% by volume or less. The olefin content is preferably 0.3% by volume or less, more preferably 0.1% by volume or less. The 1-ring aromatic content is preferably 25.0% by volume or less, more preferably 23.0% by volume or less, further preferably 20.0% by volume or less, and the 2-ring aromatic content is preferably 3.0% by volume or less. Below, more preferably 2.0% by volume or less, still more preferably 1.0% by volume or less, and the tricyclic aromatic content is preferably 1.0% by volume or less, more preferably 0.8% by volume or less, further. It is preferably 0.5% by volume or less. When the content of these components is within the above range, the combustibility is particularly improved.

(Content of hydrodesulfurized fraction in heavy kerosene fraction)
The content of the hydrodesulfurized fraction in the heavy kerosene fraction is 90.0% by volume or more. If the content of the hydrodesulfurized fraction is not within the above range, an excellent yield cannot be obtained. The content of the hydrodesulfurized fraction in the heavy kerosene fraction is preferably 92.0% by volume or more, more preferably 95.0% by volume or more, and 100. It is more preferable that the volume is 0.0% by volume, that is, the total amount is hydrodesulfurized fraction.

(Other fractions that heavy kerosene fractions may contain)
In the present embodiment, the heavy kerosene fraction may contain other fractions in addition to the hydrodesulfurized fraction. Other fractions that can be used in combination with the hydrodesulfurized fraction include, for example, the following fractions.
(I) Distillate obtained by hydrodistilling crude oil at atmospheric pressure (also referred to as "direct distillation light oil fraction") hydrolyzed (ii) Crude oil is always distilled at atmospheric pressure. The gas oil fraction (also referred to as "vacuum gas oil fraction") obtained by vacuum distillation of the residue fraction obtained by pressure distillation (also referred to as "normal pressure distillation residual oil") with a vacuum distillation apparatus is hydrolyzed and decomposed. Distillate (iii) Light oil fraction obtained by fluidized catalytic decomposition of the residual fraction obtained by directly desulfurizing the atmospheric distillation residual oil and / or the vacuum distillation residual oil with a desulfurization apparatus (“decomposed gas oil fraction”). Fraction obtained by hydrocracking (iv) atmospheric distillation residual oil and / or light oil distillate obtained by directly desulfurizing the atmospheric distillation residual oil and / or the vacuum distillation residual oil with a desulfurization apparatus (“direct desalination light oil distillate”). Fraction obtained by hydrocracking) (v) Of the paraffin-based solvents produced in petroleum chemical factories, the sulfur content is 10% by mass or less and the boiling point range is 140.0. Distillate above ° C and below 320.0 ° C

(Content of heavy kerosene fraction)
The content of the heavy kerosene fraction based on the total amount of the composition is preferably 77.0% by volume or more, more preferably 80.0% by volume or more, still more preferably 83.0% by volume or more, and is preferable as an upper limit. It is 97.0% by volume or less, more preferably 95.0% by volume or less, still more preferably 92.0% by volume or less. If the content of the heavy kerosene fraction is within the above range, the external combustion engine is equipped with a hydraulic spray burner that improves low-temperature fluidity, improves combustibility, has a low rated combustion amount, and has a low spray oil pressure. It becomes more suitable as a fuel oil composition of the above, enables more stable supply with a high yield, and can contribute to improvement of combustion by having a higher calorific value.

(Aromatic hydrocarbon oil)
The fuel oil composition for an external combustion engine of the present embodiment contains an aromatic hydrocarbon oil satisfying all of the following (a ₂ ) to (f ₂ ) as a content of 3.0% by volume based on the total amount of the composition. It is contained in the range of 23.0% by volume or less. If the above aromatic hydrocarbon oil is not contained in the above content, excellent low temperature fluidity and combustibility cannot be obtained, stable supply cannot be obtained with a high yield, and fuel efficiency is improved by a high calorific value. A possible fuel oil composition for an external combustion engine of the present embodiment cannot be obtained.
(A ₂ ) Aroma content is 99.0% by mass or more (b ₂ ) Sulfur content is 0.01% by mass or less (c ₂ ) Clouding point is -50.0 ° C or less (d ₂ ) 30 ° C The kinematic viscosity in 1600 mm ² / s or less (e ₂ ) the density at 15 ° C is 0.9000 g / cm ³ or more (f ₂ ) the ignition point is 50.0 ° C or more.

(A ₂ ) Aromatic content The aromatic content of the aromatic hydrocarbon oil used in the present embodiment is 99.0% by volume or more. Here, the aromatic content is the total content of the 1-ring aromatic component, the 2-ring aromatic component, and the 3 or more ring aromatic components. If the aromatic content is not within the above range, excellent flammability cannot be obtained. From the viewpoint of obtaining more excellent flammability, the aromatic content is preferably 99.5% by volume or more, more preferably 99.9% by volume or more.
Further, among the above aromatic components, the content of the aromatic components having three or more rings is preferably 5.0% by volume or less, more preferably 4.5% by volume or less. When the content of the aromatic content of 3 or more rings is within the above range, more excellent combustibility can be obtained.

(B ₂ ) Sulfur content The sulfur content of the aromatic hydrocarbon oil used in this embodiment is 0.01% by mass or less (100% by mass or less). If the sulfur content is not 0.01% by mass or less, corrosion may occur due to an increase in sulfur oxides in the exhaust gas. From the viewpoint of improving storage stability and suppressing the occurrence of corrosion, the sulfur content of the aromatic hydrocarbon oil is preferably 10% by mass or less, more preferably 1% by mass or less.

(C ₂ ) Cloud point The cloud point of the aromatic hydrocarbon oil used in this embodiment is −50.0 ° C. or lower. If the cloud point is not within the above range, the low temperature fluidity is lowered, the filter is likely to be clogged with the precipitated wax, and it is necessary to take measures such as heat insulation.

(D ₂ ) Dynamic Viscosity at 30 ° C. The kinematic viscosity of the aromatic hydrocarbon oil used in the present embodiment at 30 ° C. is 1.600 mm ² / s or less. If the kinematic viscosity at 30 ° C. is not within the above range, excellent combustibility cannot be obtained, and it becomes difficult to adapt the fuel oil composition for external combustion engine to the specification range of various devices such as pumps and flow meters. The kinematic viscosity of the aromatic hydrocarbon oil at 30 ° C. is preferable from the viewpoint of improving combustibility and facilitating the adaptation of the fuel oil composition for external combustion engine to the specification range of various devices such as pumps and flow meters. Is 1.300 mm ² / s or less, more preferably 1.200 mm ² / s or less, still more preferably 1.100 mm ² / s or less, and the lower limit is preferably 1.000 mm ² / s or more.

(E ₂ ) Density at 15 ° C. The density of the aromatic hydrocarbon oil used in the present embodiment at 15 ° C. is 0.9000 g / cm ³ or more. If the density at 15 ° C. is not within the above range, the effect of improving fuel efficiency by improving the calorific value cannot be obtained. From the viewpoint of improving fuel efficiency and combustibility, the density of the aromatic hydrocarbon oil at 15 ° C. is preferably 0.9010 g / cm ³ or more, and the upper limit is preferably 0.9500 g / cm ³ or less. be.

(F ₂ ) Flash point The flash point of the aromatic hydrocarbon oil used in this embodiment is 50.0 ° C. or higher. If the flash point is not within the above range, handling safety will be reduced. From the viewpoint of improving handling safety, the flash point is preferably 52.0 ° C. or higher.

Further, the heavy kerosene fraction used in the present embodiment is at least one selected from the following (g ₂ ) to (i ₂ ) in addition to the above-mentioned properties and composition of (a ₂ ) to (f ₂ ). It is preferable that all of the following (g ₂ ) to (i ₂ ) are particularly satisfied.

(G ₂ ) Initial distilling point The initial distilling point of the aromatic hydrocarbon oil used in the present embodiment is preferably 140.0 ° C. or higher, more preferably 150.0, from the viewpoint of improving handling safety. The temperature is preferably 160.0 ° C. or higher, more preferably 160.0 ° C. or higher, and the upper limit is preferably 170.0 ° C. or lower, more preferably 165.0 ° C. or lower, from the viewpoint of improving the yield.

(H ₂ ) End point The end point of the aromatic hydrocarbon oil used in the present embodiment is preferably 290.0 ° C. or higher, more preferably 300.0 ° C. or higher, still more preferably 310, from the viewpoint of improving the yield. The temperature is 0.0 ° C. or higher, and the upper limit is preferably 350.0 ° C. or lower, more preferably 330.0 ° C. or lower, and further preferably 320.0 ° C. or lower in consideration of improvement in flammability.

(I ₂ ) Composition The aromatic content having 9 carbon atoms based on the total amount of the composition of the aromatic hydrocarbon oil used in the present embodiment is preferably 50.0% by volume or more from the viewpoint of obtaining more excellent flammability. , More preferably 55.0% by volume or more, still more preferably 60.0% by volume or more, and the upper limit is preferably 70.0% by volume or less, more preferably 68.0% by volume or less, still more preferably 65.0. Capacity% or less. The aromatic content having 10 carbon atoms is preferably 20.0% by volume or more, more preferably 25.0% by volume or more, still more preferably 30.0% by volume or more, from the viewpoint of obtaining more excellent combustibility. The upper limit is preferably 40.0% by volume or less, more preferably 38.0% by volume or less, still more preferably 35.0% by volume or less. Further, from the viewpoint of obtaining more excellent flammability, the aromatic content having 11 or more carbon atoms is preferably 10.0% by volume or less, more preferably 9.0% by volume or more, still more preferably 8.0% by volume or less. The lower limit is not particularly limited, and is usually 1.5% by volume or more.
In the present specification, the above-mentioned aromatic component having 9 carbon atoms, the aromatic component having 10 carbon atoms, and the aromatic component having 11 or more carbon atoms are referred to as JIS K 2536-2 "Petroleum products-component test method-Part 2: It is a value measured by "How to obtain all components by gas chromatography".

The aromatic hydrocarbon oil used in the present embodiment is, for example, a monocyclic aromatic (monocyclic aromatic) such as light benzene, toluene, xylene among the aromatic components produced from the naphtha catalytic reformer. It is obtained by distilling (extracting) a part of a component and an aromatic component having 9 carbon atoms to make a gasoline base material and a petroleum chemical base material, and then distilling. Therefore, the aromatic hydrocarbon oil contains a polycyclic aromatic such as a bicyclic aromatic such as naphthalene and a tricyclic aromatic such as phenanthrene, in addition to the monocyclic aromatic having 9 carbon atoms.

(Contents of aromatic hydrocarbon oil)
The content of the aromatic hydrocarbon oil based on the total amount of the composition is 3.0% by volume or more and 23.0% by volume or less. It improves low-temperature fluidity and flammability, making it more suitable as a fuel oil composition for external combustion engines equipped with a hydraulic spray burner with a low rated combustion amount and low spray hydraulic pressure, and is more stable due to a high yield. The content of the aromatic hydrocarbon oil based on the total amount of the composition is preferably 5.0% by volume or more, from the viewpoint that it can be supplied in a stable manner and can contribute to the improvement of fuel efficiency by having a higher calorific value. It is preferably 7.5% by volume or more, and the upper limit is preferably 20.0% by volume or less, more preferably 17.5% by volume or less.

(Antioxidant)
The fuel oil composition for an external combustion engine of the present embodiment contains an antioxidant in the range of 20% by mass or more and 100% by mass or less as the content based on the total amount of the composition. If the above-mentioned antioxidant is not contained in the above-mentioned content, the storage stability may be lowered and the combustibility may be lowered.
The content of the antioxidant composition based on the total amount is preferably 25% by mass or more, more preferably 30% by mass or more, from the viewpoint of efficiently improving storage stability and improving flammability, and is an upper limit. It is preferably 80 mass ppm or less, and more preferably 60 mass ppm or less.

The antioxidant used in the present embodiment can be used without particular limitation as long as it is widely used in fuel oil compositions. For example, antioxidants such as phenol-based antioxidants and amine-based antioxidants can be used. Is preferably mentioned. Further, in the present embodiment, the antioxidant may be used alone or in combination of two or more.

Examples of the phenolic antioxidant include 2,6-di-tert-butyl-4-methylphenol, 2,4-dimethyl-6-tert-butylphenol, 2,6-di-tert-butylphenol, 2,4,6. -Monocyclic tert-alkylphenolic antioxidants such as tri-tert-butylphenol, 2,6-di-tert-butyl-4- (N, N-dimethylaminomethyl) phenol; 4,4'-methylenebis (2) , 6-di-tert-butylphenol), 4,4'-isopropyridenebis (2,6-di-tert-butylphenol), 2,2'-methylenebis (4-methyl-6-tert-butylphenol), 4, 4'-bis (2,6-di-tert-butylphenol), 4,4'-bis (2-methyl-6-tert-butylphenol), 2,2'-methylenebis (4-ethyl-6-tert-butylphenol) ), Polycyclic tert-alkylphenol-based antioxidants such as 4,4'-butylidenevis (3-methyl-6-tert-butylphenol); and the like.

Examples of the amine-based antioxidant include monoalkyldiphenylamine-based antioxidants such as monooctyldiphenylamine and monononyldiphenylamine; 4,4'-dibutyldiphenylamine, 4,4'-dipentyldiphenylamine, 4,4'-dihexyldiphenylamine, 4 , 4'-Diheptyldiphenylamine, 4,4'-dioctyldiphenylamine, 4,4'-dinonyldiphenylamine and other dialkyldiphenylamine-based antioxidants; tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, tetranonyldiphenylamine and the like Examples thereof include polyalkyldiphenylamine-based antioxidants; naphthylamine-based antioxidants such as α-naphthylamine, phenyl-α-naphthylamine, and butylphenyl-α-naphthylamine; and the like.

In the present embodiment, a phenolic antioxidant having a tert-alkyl group is preferable, a monocyclic phenolic antioxidant having a tert-alkyl group is more preferable, and 2,6-di-tert-butylphenol, among others. 2,4-Dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-4-methylphenol are preferred.

(Other additives)
The fuel oil composition for an external combustion engine of the present embodiment has a low-temperature fluidity improver and lubrication as other additives other than the above-mentioned antioxidant, if necessary, as long as the above-mentioned properties can be maintained. Various additives such as a property improver, a cetane number improver, a combustion accelerator, a cleaning agent, a sludge dispersant, and an antifungal agent can be appropriately selected and blended. In addition, coumarin may be blended from the viewpoint of light oil take-back tax.

(Use)
The fuel oil composition for an external combustion engine of the present embodiment shows excellent low-temperature fluidity even in a cold region in a severe cold season, and is equipped with a hydraulic spray type burner having a low rated combustion amount and a low spray hydraulic pressure. It also has the characteristics of showing excellent combustibility, being able to supply more stably with a high yield, and being able to contribute to improving fuel efficiency by having a higher calorific value, and is a steam boiler. , Hot water boiler, hot air heater, absorption type cold / hot water machine, and external combustion engine such as hot water generator.
Further, the fuel oil composition for an external combustion engine of the present embodiment has a rated combustion amount of 10.0 L / hour or less and a spray hydraulic pressure of 0.90 MPa or less, preferably a rated combustion amount of 7, among the above-mentioned external combustion engines. When used for an external combustion engine equipped with a hydraulic spray burner with a spray pressure of 0.0 L / hour or less and a spray oil pressure of 0.80 MPa or less, more preferably a rated combustion amount of 5.0 L / hour or less and a spray pressure of 0.70 MPa or less. , The above characteristics are particularly exhibited.

[Manufacturing method of fuel oil composition for external combustion engine]
The method for producing a fuel oil composition for an external fuel according to the present embodiment contains 90.0% by volume or more of a distillate obtained by hydrocarbonizing and desulfurizing a direct distillate obtained by atmospheric distillation of crude oil (a ₁ ). A heavy kerosene distillate satisfying all of (e ₁ ), an aromatic hydrocarbon oil satisfying all of the above (a ₂ ) to (f ₂ ), and an antioxidant are used in the aromatic system. The content of the hydrocarbon oil based on the total amount of the composition is 3.0% by volume or more and 23.0% by volume or less, and the content of the antioxidant based on the total amount of the composition is 20% by mass or more and 100% by mass or less. However, a fuel oil composition for an external fuel machine that satisfies all of the above (1) to (6) is produced. The fuel oil composition for an external combustion engine of the present embodiment can be easily manufactured by the manufacturing method of the present embodiment.

In the method for producing a fuel oil composition for an external combustion engine of the present embodiment, the properties and composition of the fuel oil composition for an external combustion engine, a heavy kerosene distillate, an aromatic hydrocarbon oil, an antioxidant and the like can be obtained. Aspects are the same as those of the above-mentioned fuel oil composition for external combustion engine.
The order of blending the heavy kerosene fraction, aromatic hydrocarbon oil, antioxidant, and various additives used as needed is not particularly limited. For example, the heavy kerosene fraction contains aromatic hydrocarbons. Oil, antioxidants and various additives may be added sequentially and mixed, or after the antioxidant and various additives are mixed in advance, the mixture, a heavy kerosene fraction, and an aromatic hydrocarbon may be added. It may be mixed with hydrocarbon oil.

Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. The properties of each substrate were determined according to the following method as described above.

[Measurement of properties and composition]
Various properties and compositions of heavy kerosene fraction, aromatic hydrocarbon oil, and fuel oil composition were measured by the following methods.
Distillation properties (initial distillation point, end point and 95% by volume distillation temperature): Measured according to JIS K2254: 1998 (Petroleum products-distillation test method-).
-Flash point: Measured according to JIS K 2265-1: 2007 (crude oil and petroleum products-flash point test method-Part 3: tag sealing method).
-Sulfur content: Measured according to JIS K2541-7: 2003 (crude oil and petroleum products-sulfur content test method-Part 7: wavelength-dispersed fluorescent X-ray method).
-Cloud point: Measured according to JIS K2269: 1987 (pour point of crude oil and petroleum products and cloud point test method).
-Total calorific value: Measured and estimated according to JIS K2279: 2003 (crude oil and petroleum products-calorific value test method and estimation method by calculation-) ("6. Total calorific value estimation method, 6.3 e) 1) ], Estimated by the calculation formula for crude oil, kerosene, light oil, A heavy oil and B heavy oil).
-Reaction test: Petroleum products according to JIS K 2252: 1998-Measured by reaction test.
Moisture content: Measured according to JIS K 2275-3: 2015 (crude oil and petroleum products-how to determine water-Part 3: Karl Fischer titration method).
-Ash content: Measured according to JIS K 2272: 1998 (crude oil and petroleum products-ash content and sulfate ash content test method-).
-Kinematic viscosity at 30 ° C.: Measured according to JIS K 2283: 2000 (kinematic viscosity test method for crude oil and petroleum products).
-Density at 15 ° C.: Measured according to JIS K 2249-1: 2011 (crude oil and petroleum products-how to determine the density-Part 1: vibration method).
-Composition: Saturated content, olefin content, 1-ring aromatic component, 2-ring aromatic component and 3-ring aromatic component are specified in JPI-5S-49-2007, and petroleum products-hydrocarbon type test method-high performance. It was measured by a liquid chromatography method (High Performance Liquid Chromatography method).
-Aromatic content by carbon number: The content of the aromatic component having 9 carbon atoms, the aromatic component having 10 carbon atoms, and the aromatic component having 11 or more carbon atoms is determined by JIS K 2536-2 "Petroleum products-component test method". -Part 2: Values measured by "How to determine all components by gas chromatography".

[Performance evaluation criteria]
The following performances 1 to 4 were evaluated, and the worst evaluation was evaluated as a comprehensive evaluation. If it is an E evaluation, it fails.
1. 1. Combustibility (1) Evaluation model, conditions / evaluation model; warm air warmer ("House Kaonki HK-1527", manufactured by Nepon Inc., rated combustion amount 4.9L / hour, on / off control)
-Fuel spray pressure; 0.69 MPa (hydraulic spray burner)
・ Band shutter opening: Adjust the exhaust gas oxygen concentration to 3.0 ± 0.2% ・ Fuel heating burner front heater; Off (2) Evaluation items 1 hour continuous combustion, 15 minutes fire extinguishing is repeated as one cycle After burning for 500 hours, the following items were evaluated.
・ Ignition: No visual ignition delay ・ Combustibility; Soot concentration (Baccarakka smoke number; SN) in the exhaust gas is measured with a Baccarac smoke tester (3) Evaluation criteria A: No ignition delay and soot concentration ( SN) is 0.5 or less B: No ignition delay, soot concentration (SN) is more than 0.5 and 1.0 or less C: No ignition delay, soot concentration (SN) is more than 1.0 and 1.5 or less E :Other than those above

2. 2. Storage stability (1) Evaluation item In accordance with ASTM D4625, after 6 weeks of dark storage at 43 ° C (equivalent to approximately 6 months of storage at room temperature), the amount of dry sludge is adjusted to the fuel oil standard Z for all fishing vessels. .. G. The measurement was carried out based on the all-fishermen's A heavy oil dry sludge measurement method specified in ST-1010.
(2) Evaluation criteria A: Dry sludge is 1 mg / 100 mL or less E: Other than the above

3. 3. Low-temperature fluidity (1) Evaluation item The oil passage limit temperature was measured in accordance with the low-temperature fluidity test method standard (actual simulation method) for heavy oil A of JPI-5S-47-96. The oil passage limit temperature is the minimum oil temperature at which filter clogging does not occur due to the wax deposited at a low temperature. If the oil temperature is lowered below the oil flow limit temperature, the possibility of filter clogging due to wax becomes very high.
(2) Evaluation Criteria A: Oil flow limit temperature ≤ -20.0 ° C
E: Other than the above

4. Fuel efficiency performance Based on the total calorific value, the evaluation was made according to the following criteria.
A: Total calorific value is 37,400 kJ / L or more B: Total calorific value is 37,200 kJ / L or more C: Total calorific value is 37,100 kJ / L or more D: Total calorific value is 37,000 kJ / L or more E: Total calorific value is less than 37,000 kJ / L

[Manufacturing method of heavy kerosene fraction]
The straight kerosene fraction obtained by atmospheric distillation of crude oil was hydrodesulfurized at a reaction temperature (about 340 ° C.) at which the sulfur content was 5 mass ppm to obtain a heavy kerosene fraction.
The properties and composition of the obtained heavy kerosene fraction were evaluated by the same method as in the evaluation of the above-mentioned base material. The results are shown in Table 1.

[Examples 1 to 4, Comparative Examples 1 and 2]
A heavy kerosene fraction obtained by the above-mentioned method for producing a heavy kerosene fraction having the properties and composition shown in Table 1 and an aromatic hydrocarbon oil having the properties and composition shown in Table 1 are prepared. did. A fuel oil composition is prepared by mixing a heavy kerosene fraction, an aromatic hydrocarbon oil and an antioxidant (2,6-di-tert-butyl-4-methylphenol) in the ratios shown in Table 2. did.
The combustibility, storage stability, low temperature fluidity, and fuel efficiency of each of the obtained fuel oil compositions were evaluated according to the following criteria. The results are shown in Table 2.

[Performance evaluation results]
As shown in Table 2, the fuel oil composition for an external combustion engine of the present embodiment has good combustibility, storage stability, low temperature fluidity, and fuel efficiency, and even in a cold region in a severe cold season. It shows excellent low-temperature fluidity, shows excellent combustibility even in an external combustion engine equipped with a hydraulic spray burner with a low rated combustion amount and low spray oil, and enables more stable supply with a high yield. It was confirmed that it can contribute to the improvement of combustion by having a higher calorific value.
On the other hand, the fuel oil composition of Comparative Example 1 containing no aromatic hydrocarbon oil has poor fuel efficiency due to its low total calorific value, and the fuel oil of Comparative Example 2 having a high content of aromatic hydrocarbon oil. The composition could not exhibit excellent combustibility in an external fuel machine equipped with a hydraulic spray burner having poor combustibility, a low rated combustion amount in a cold region in a severe cold season, and a low spray oil pressure.

The fuel oil composition for an external combustion engine of the present embodiment shows excellent low-temperature fluidity even in a cold region in a severe cold season, and is equipped with a hydraulic spray burner having a low rated combustion amount and a low spray hydraulic pressure. In addition, it shows excellent combustibility, it is possible to supply more stably with a high yield rate, and it can contribute to the improvement of fuel efficiency by having a higher calorific value, and the demand in winter in cold regions is high. It is possible to solve the supply shortage of kerosene and kerosene distillate, which is extremely large.
The fuel oil composition for an external combustion engine of the present embodiment is suitably used for external combustion engines such as steam boilers, hot water boilers, hot air heaters, absorption type cold / hot water machines, and hot water generators, and in particular, rated combustion. When used in an external combustion engine for steam equipped with a hydraulic spray type burner having an amount of 10.0 L / hour or less and a spray hydraulic pressure of 0.90 MPa or less, the above characteristics are exhibited, and therefore, it is particularly preferably used.

Claims (4)

A heavy kerosene fraction that satisfies all of the following (a ₁ ) to (e ₁ ) and contains 90.0% by volume or more of the direct distillate obtained by atmospheric distillation of crude oil hydrocarbonized and desulfurized. It contains an aromatic hydrocarbon oil satisfying all of the following (a ₂ ) to (f ₂ ) and an antioxidant, and the content of the aromatic hydrocarbon oil based on the total amount of the composition is 3. It is 0% by volume or more and 23.0% by volume or less, and the content of the antioxidant based on the total amount of the composition is 20% by mass or more and 100% by mass or less, and all of the following (1) to (6) are satisfied. Fuel oil composition for hydrocarbons.
( _{A 1} ) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (b ₁ ) Initial distillation point is 140.0 ° C or higher (c ₁ ) Ignition point is 40.0 ° C or higher (d ₁ ) Sulfur content is 3% by mass or more and 10% by mass or less (e ₁ ) Cloudy point is -20.0 ° C or less (a ₂ ) Aroma content is 99.0% by mass or more (b ₂ ) Sulfur content Is 0.01% by mass or less (c ₂ ) The cloudiness point is -50.0 ° C or less (d ₂ ) The kinematic viscosity at 30 ° C is 1.600 mm ² / s or less (e ₂ ) The density at 15 ° C is 0.9000 g / cm ³ or more (f ₂ ) Ignition point is 50.0 ° C or more (1) 95% by mass distillation temperature is 271.0 ° C or more and 300.0 ° C or less (2) Initial distillation point is 140.0 ° C or more (3) Ignition point is 40.0 ° C or higher (4) Sulfur content is 3% by mass or more and 10% by mass or less (5) Cloudy point is -20.0 ° C or less (6) Total calorific value is 37,000 (kJ / L) )that's all Further, the fuel oil composition for an external combustion engine according to claim 1, which satisfies at least one selected from the following (7) to (12).
(7) The result of the petroleum product reaction test is neutral (8) The water content is 0.01% by volume or less (9) The ash content is 0.001% by mass or less (10) The kinematic viscosity at 30 ° C is 1.300 mm ² / S or more 1.700 mm ² / s or less (11) Density at 15 ° C is 0.8000 g / cm ³ or more (12) Saturation content is 60.0% by volume or more and olefin content is 0.3 volume based on the total amount of composition. % Or less, 1-ring aromatic content is 35.0% by volume or less, 2-ring aromatic content is 5.0% by volume or less, and 3-ring aromatic content is 1.5% by volume or less. The fuel oil composition for an external combustion engine according to claim 1 or 2, which is used for an external combustion engine equipped with a hydraulic spray type burner having a rated combustion amount of 10.0 L / hour or less and a spray hydraulic pressure of 0.9 MPa or less. A heavy kerosene fraction that satisfies all of the following (a ₁ ) to (e ₁ ), which contains 90.0% by volume or more of the direct distillate obtained by atmospheric distillation of crude oil and hydrocarbonized and desulfurized. The content of the aromatic hydrocarbon oil satisfying all of the following (a ₂ ) to (f ₂ ) and the antioxidant is 3.0% by volume based on the total composition of the aromatic hydrocarbon oil. External fuel satisfying all of the following (1) to (6), which is blended so as to have a content of 23.0% by volume or less and a content of the antioxidant based on the total amount of the composition of 20 mass ppm or more and 100 mass ppm or less. A method for producing a fuel oil composition for a machine.
( _{A 1} ) 95% by mass distillation temperature is 271.0 ° C or higher and 300.0 ° C or lower (b ₁ ) Initial distillation point is 140.0 ° C or higher (c ₁ ) Ignition point is 40.0 ° C or higher (d ₁ ) Sulfur content is 3% by mass or more and 10% by mass or less (e ₁ ) Cloudy point is -20.0 ° C or less (a ₂ ) Aroma content is 99.0% by mass or more (b ₂ ) Sulfur content Is 0.01% by mass or less (c ₂ ) The cloudiness point is -50.0 ° C or less (d ₂ ) The kinematic viscosity at 30 ° C is 1.600 mm ² / s or less (e ₂ ) The density at 15 ° C is 0.9000 g / cm ³ or more (f ₂ ) Ignition point is 50.0 ° C or more (1) 95% by mass distillation temperature is 271.0 ° C or more and 300.0 ° C or less (2) Initial distillation point is 140.0 ° C or more (3) Ignition point is 40.0 ° C or higher (4) Sulfur content is 3% by mass or more and 10% by mass or less (5) Cloudy point is -20.0 ° C or less (6) Total calorific value is 37,000 (kJ / L) )that's all