JP7313142B2 - Heavy oil composition and method for producing heavy oil composition - Google Patents

Description

The present invention relates to a heavy oil composition and a method for producing the heavy oil composition.

Conventionally, heavy oil compositions have been used for various purposes in various industrial fields, and in JIS K2205, they are classified into three types, Class 1 (heavy oil A), Class 2 (heavy oil B), and Class 3 (heavy oil C).
Among these heavy oil compositions, A heavy oil is generally used as a fuel oil for a heater for greenhouse warming cultivation and a heater for buildings, etc., and B heavy oil and C heavy oil are generally used as fuel oil for large diesel engines for ships, and as fuel oil for large-scale boilers such as factories, power plants, and district heating and cooling (see, for example, Patent Document 1 (Japanese Patent Application Laid-Open No. 5-331470)).

As described above, C heavy oil and A heavy oil have different viscosities, and therefore the blending of base materials is also different. That is, both A heavy oil and C heavy oil are made by blending residual oil such as heavy and highly viscous vacuum distillation residual oil obtained in the petroleum refining process and relatively light light oil base oil. While A heavy oil is made by blending a small percentage of the above-mentioned residual oil with the above-mentioned light oil base material, C heavy oil is made by blending a small percentage of the above-mentioned residual oil with a light oil base material as a cutter material, and its viscosity is also higher than that of A heavy oil.

On the other hand, in recent years, from the viewpoint of reducing the environmental load and suppressing flue corrosion, lowering the sulfur content of the residual oil used as the heavy oil base material has been studied, and a heavy oil composition using such a low-sulfur base material is now in demand.
In particular, for heavy oil compositions used as marine fuel oil, the sulfur content is gradually regulated by the international treaty (MARPOL Convention) stipulated by the IMO (International Maritime Organization), and in the future, it is required to be reduced to 0.50% by mass or less.

In addition, the heavy oil composition used in internal combustion engines, such as a heavy oil composition equivalent to C heavy oil, is required to have excellent ignitability and combustibility.
CCAI (Calculated Carbon Aromaticity Index), which is calculated from the density of the heavy oil composition at 15° C. and the kinematic viscosity at 50° C., is known as an index of the ignitability of a heavy oil composition equivalent to C heavy oil, and generally, the higher the CCAI, the lower the ignitability of the heavy oil composition.

JP-A-5-331470

However, it is known that residual oil such as vacuum distillation residual oil, which generally constitutes a heavy oil composition, is a base material having a very high sulfur content.

In addition, as described above, the heavy oil composition equivalent to heavy oil C has a high residual oil content and a high viscosity, and therefore it is generally difficult to improve ignitability.
Especially when a heavy base oil such as the bottom oil of a fluidized catalytic cracking (FCC) unit (e.g., slurry oil) is used as the residual oil, the CCAI tends to deteriorate, so it was difficult to prepare a heavy oil composition containing a large amount of the heavy base material.

Under such circumstances, it is an object of the present invention to provide a heavy oil composition in which the sulfur content is reduced to 0.50% by mass or less even when a heavy base material is contained in a large amount, and the CCAI can be controlled within a desired range, and to provide a method for producing a heavy oil composition.

As a result of intensive studies by the present inventors, 1 to 35% by volume of directly desulfurized heavy oil, a base material excluding directly desulfurized heavy oil, CCAI of 900 or less, and kinematic viscosity of 100.00 mm²/s or less, density is 0.9400g/cm³~1.2000g/cm³65 to 99% by volume of the base material (base material A) corresponding to the slurry oil, the sulfur content is 0.50% by mass or less, and the kinematic viscosity at 50 ° C. is 55.00 mm²The present inventors have found that the above technical problems can be solved by a heavy oil composition having a CCAI of 825 to 870 per second or less, and have completed the present invention based on this finding.

That is, the present invention
(1) 1 to 35% by volume of direct desulfurized heavy oil,
65 to 99% by volume of a base material A having a CCAI of 900 or less, a kinematic viscosity of 100.00 mm ² /s or less, and a density of 0.9400 g/cm ³ to 1.2000 g/cm ³ , excluding direct desulfurized heavy oil;
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870
A heavy oil composition characterized by
(2) The heavy oil composition according to (1) above, wherein the base material A has an aromatic content of 41% by mass or less and a resin content of 1.0% to 5.0% by mass.
(3) A method for producing a heavy oil composition, comprising:
1 to 35% by volume of direct desulfurized heavy oil,
A base material excluding direct desulfurized heavy oil, which has a CCAI of 900 or less, a kinematic viscosity of 100.00 mm ² /s or less, and a density of 0.9400 g/cm ³ to 1.2000 g/cm ³ , is mixed so as to be 65 to 99% by volume,
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870,
A method for producing a heavy oil composition, characterized by obtaining a heavy oil composition that is
(4) The method for producing a heavy oil composition according to (3) above, wherein the base material A has an aromatic content of 41% by mass or less and a resin content of 1.0% by mass to 5.0% by mass.
It provides

According to the present invention, it is possible to provide a heavy oil composition in which the sulfur content is reduced to 0.50% by mass or less even when a heavy base material is contained in a large amount, and the CCAI can be controlled within a desired range, and a method for producing a heavy oil composition can be provided.

DETAILED DESCRIPTION OF THE INVENTION Embodiments for carrying out the present invention will be described in detail below.
In this specification, "-" representing a numerical range represents a range including the numerical values described as the upper limit and the lower limit, respectively. In addition, when only the upper limit value in a numerical range represented by "-" is described in units, it means that the lower limit value is also in the same unit.
In the numerical ranges described stepwise in this specification, the upper limit or lower limit described in a certain numerical range may be replaced with the upper limit or lower limit of another numerical range described stepwise.
As used herein, the content rate or content of each component in the composition means the total content rate or content of the multiple types of substances present in the composition when there are multiple types of substances corresponding to each component in the composition, unless otherwise specified.
Combinations of preferred aspects are more preferred aspects herein.

In this specification, unless otherwise specified, the values of the following items mean the values obtained using the following test methods and calculations.
- "Density" (density at 15°C);
JIS K 2249-1 (2011) "Crude oil and petroleum products - Density test method"
・ "Sulfur content";
JIS K 2541-7 (2003) "Crude oil and petroleum products-Sulfur content test method" (fluorescent X-ray method)
- "kinematic viscosity" (kinematic viscosity at 50 ° C.);
JIS K 2283 (2000) "Crude oil and petroleum products-Kinematic viscosity test method"
- "CCAI";
It means the value obtained by the calculation method shown in the following formula (α).
CCAI = D - 140.7 log ₁₀ log ₁₀ (V + 0.85) - 80.6 (α)
In the formula (α), D is the density (kg/m ³ ) at 15°C, and V is the kinematic viscosity (mm ² /s) at 50°C.
- "Composition" (asphaltene content, resin content, aromatic content and saturated content);
It was measured according to JPI-5S-22-83 "Composition analysis of asphalt by column chromatography".
However, for analysis of components other than asphaltenes, liquid chromatography was used instead of column chromatography. The main operating parameters of liquid chromatography are as follows.

- "latent segmentation";
ISO 10307-2:2009 "Petroleum products - Total sediment in residual fuel oils -"
It means a value measured by Thermal aging (Procedure A).
- "existent segement";
It means a value measured according to ISO 10307-1:2009 “Petroleum products—Total sediment in residual fuel oils—”.

First, the heavy oil composition of the present invention will be explained.
The heavy oil composition of the present invention is
1 to 35% by volume of direct desulfurized heavy oil,
65 to 99% by volume of a base material A having a CCAI of 900 or less, a kinematic viscosity of 100.00 mm ² /s or less, and a density of 0.9400 g/cm ³ to 1.2000 g/cm ³ , excluding direct desulfurized heavy oil;
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870
It is characterized by being

The heavy oil composition of the present invention contains 1 to 35% by volume of direct desulfurized heavy oil.

Directly desulfurized heavy oils are heavy fractions obtained by hydrodesulfurizing atmospheric bottoms, vacuum bottoms, or mixtures thereof.
The direct desulfurization equipment used for hydrodesulfurization is not particularly limited, and known equipment can be applied.
Directly desulfurized heavy oil has a lower sulfur content than vacuum distillation residual oil used as the main base material of conventional heavy oil compositions, so that the heavy oil composition contains directly desulfurized heavy oil. It is possible to reduce the sulfur content in the composition and easily adjust the viscosity to be suitable for the heavy oil composition.

The directly desulfurized heavy oil preferably has a sulfur content of 0.50% by mass or less, more preferably 0.10% by mass to 0.50% by mass, and even more preferably 0.15% by mass to 0.50% by mass.
It is preferable that the sulfur content in the directly desulfurized heavy oil is as low as possible, but if the sulfur content in the directly desulfurized heavy oil is excessively reduced, the desulfurized feedstock will be restricted, harsh treatment conditions will be required, etc., which will easily lead to an increase in cost.
By setting the sulfur content in the directly desulfurized heavy oil to 0.50% by mass or less, the sulfur content of the heavy oil composition can be easily adjusted.

The directly desulfurized heavy oil preferably has a density (density at 15° C.) of 0.8600 g/cm ³ to 0.9600 g/cm ³ , more preferably 0.8600 g/cm ³ to 0.9500 g/cm ³ , even more preferably 0.8700 g/cm ³ to 0.9500 g/cm ³ .
A heavy oil composition prepared using a directly desulfurized heavy oil having a density at 15°C within the above range can increase the calorific value per unit volume and easily suppress the occurrence of uneven combustion and combustion failure.

The directly desulfurized heavy oil preferably has a kinematic viscosity at 50° C. of 80.00 mm ² /s to 270.00 mm ² /s, more preferably 90.00 mm ² /s to 250.00 ^{mm 2} /s, even more preferably 100.00 ^{mm 2} /s to 240.00 ^{mm 2} /s.
A heavy oil composition prepared using a direct desulfurized heavy oil having a kinematic viscosity at 50° C. within the above range has a good spray state when used in an internal combustion engine, so uneven combustion and misfire can be suppressed, and the heavy oil composition can be stably supplied to the engine.

The direct desulfurized heavy oil preferably has a CCAI of 810 or less, more preferably 805 or less, and even more preferably 800 or less.
When the CCAI of the directly desulfurized heavy oil is within the above range, the atomization state becomes good when used in an internal combustion engine, it is possible to suppress uneven combustion and misfire, and the heavy oil composition can be stably supplied to the engine. In addition, good ignitability can be easily exhibited while effectively utilizing the decomposition-type base material, which is a heavy base material.

The directly desulfurized heavy oil preferably has an asphaltene content of 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably 3.5% by mass or less.

The directly desulfurized heavy oil preferably has a resin content of 1.0% by mass to 10.0% by mass, more preferably 1.0% by mass to 8.0% by mass.

The directly desulfurized heavy oil preferably has an aromatic content of 10.0% to 40.0% by mass, more preferably 10.0% to 35.0% by mass.

The directly desulfurized heavy oil preferably has a saturated content of 80.0% by mass or less, more preferably 75.0% by mass or less.

The directly desulfurized heavy oil preferably has a latent sediment content of 2.00% by mass or less, more preferably 1.70% by mass or less, and even more preferably 1.50% by mass or less.
A heavy oil composition prepared using a directly desulfurized heavy oil having a latent sediment content of 2.00% by mass or less can easily suppress generation of sediment during storage.

The latent sediment amount can be easily controlled by adjusting the content ratios of the asphaltenes, resins, aromatics and saturates described above.

In the heavy oil composition of the present invention, the content of the direct desulfurized heavy oil is 1% to 35% by volume, more preferably 1% to 30% by volume, and 1% to 25% by volume. More preferably.

When the content of the directly desulfurized heavy oil is within the above range, the generation of sediments during storage is suppressed, CCAI is controlled within the desired range, and a heavy oil composition with a suppressed sulfur content can be easily provided.

The heavy oil composition of the present invention is a base material other than direct desulfurized heavy oil, and contains 65 to 99% by volume of base material A having a CCAI of 900 or less, a kinematic viscosity of 100.00 mm ² /s or less, and a density of 0.9400 g/cm ³ to 1.2000 g/cm ³ .

Base material A is heavy oil other than directly desulfurized heavy oil, and for example, heavy oil fractions such as slurry oil, catalytically cracked heavy oil, and indirectly desulfurized heavy oil, atmospheric distillation residue, adjusted vacuum distillation residue, etc. Residue, ethylene bottom oil, etc. Can be mentioned.
Slurry oil is residual oil obtained from a fluidized catalytic cracking unit or residual oil fluidized catalytic cracking unit and generally has a boiling point range equal to or higher than the gas oil equivalent fraction.
The fluid catalytic cracking unit or residual oil fluid catalytic cracking unit is not particularly limited, and known units can be used.

The base material A preferably has a sulfur content of 0.01% to 0.70% by mass, more preferably 0.01% to 0.60% by mass, and even more preferably 0.01% to 0.50% by mass.
When the sulfur content of the base material A is within the above range, the sulfur content in the heavy oil composition can be easily adjusted to 0.5% by mass.

Base material A preferably has a density (density at 15° C.) of 0.9400 g/cm ³ to 1.2000 g/cm ³ , more preferably 0.9400 g/cm ³ to 1.100 g/cm ³ , even more preferably 0.9400 g/cm ³ to 1.0000 g/cm ³ .
When the density of the base material A at 15°C is within the above range, the calorific value per volume of the heavy oil composition can be easily improved.

Base material A preferably has a kinematic viscosity at 50° C. of 100.00 mm ² /s or less, more preferably 10.00 mm ² /s to 90.00 ^{mm 2} /s, even more preferably 30.00 mm ² /s to 70.00 mm ² /s.
When the kinematic viscosity of the base material A at 50°C is within the above range, it becomes easy to easily adjust the viscosity range of the heavy oil composition that can be used particularly in internal combustion engines.

Substrate A preferably has a CCAI of 900 or less, more preferably 800-890, even more preferably 850-890.
When the CCAI of the base material A is within the above range, good ignitability can be easily exhibited while effectively utilizing the decomposition base material, which is a heavy base material.

The content of asphaltene in the base material A is preferably 4.0% by mass or less, more preferably 3.5% by mass or less, and even more preferably 3.0% by mass or less.

The base material A preferably has a resin content of 1.0% to 5.0% by mass, more preferably 1.0% to 4.5% by mass, and even more preferably 1.0% to 4.0% by mass.
In the heavy oil composition of the present invention, by using the base material A having a resin content within the above range, CCAI can be easily controlled within the desired range even when a large amount of the heavy base material A is included.

The base material A preferably has an aromatic content of 41% by mass or less, more preferably 0.1% to 41% by mass, and even more preferably 20% to 41% by mass.
In the heavy oil composition of the present invention, CCAI can be easily controlled within a desired range by using a base material A having an aromatic content within the above range, even when a large amount of the heavy base material A is included.

Substrate A preferably has a saturate content of 80.0% by mass or less, more preferably 75.0% by mass or less.

Substrate A preferably has a latent sediment of 0.50% by mass or less, more preferably 0.30% by mass or less, and even more preferably 0.10% by mass or less.
When the latent sediment in the base material A is 0.50% by mass or less, the generation of sediment in the heavy oil composition can be more easily suppressed.

The content of the base material A in the heavy oil composition of the present invention is 65% to 99% by volume, more preferably 65% to 90% by volume, and even more preferably 65% to 80% by volume.

Even when the heavy oil composition of the present invention contains a large amount of the heavy base material A as described above, the sulfur content in the heavy oil composition can be easily reduced, and CCAI can be easily controlled within a desired range.

The heavy oil composition of the present invention may further contain other base materials other than the directly desulfurized heavy oil and base material A (hereinafter also referred to as "other base materials").
Other base materials are not particularly limited, and examples thereof include catalytic cracking gas oil (LCO), straight run gas oil (LGO), direct desulfurized light gas oil, directly desulfurized heavy gas oil, hydrodesulfurized gas oil, indirect desulfurized vacuum gas oil, thermally cracked gas oil, heavy catalytically cracked gas oil, gas oil fractions such as desulfurized vacuum gas oil, vacuum gas oil (VGO), cutback residual oil, and the like.
Other base materials may be used singly or in combination of two or more.

As used herein, the term “cutback residual oil” refers to residual oil obtained by blending a light base material with the residual oil obtained from a vacuum distillation apparatus and cutting back the residual oil.
As used herein, the term “cutback” means mixing residual oil with a light base material such as a light oil fraction or an indirect desulfurized light oil to adjust the viscosity, sulfur content, etc., to the intended properties of the heavy oil composition.
The light base material used for cutback is not particularly limited, and examples thereof include catalytic cracking gas oil (LCO), straight-run gas oil (LGO), vacuum gas oil (VGO), direct desulfurized gas oil, hydrodesulfurized gas oil, indirect desulfurized gas oil, thermally cracked gas oil, heavy catalytic cracking gas oil, and desulfurized vacuum gas oil.

In the heavy oil composition of the present invention, the content of other base materials is 0% to 34% by volume, preferably 1% to 33% by volume, and more preferably 5% to 30% by volume.

The heavy oil composition of the present invention may contain various additives as appropriate.
Additives include known fuel additives such as fluidity improvers, pour point depressants, antioxidants, sludge dispersants, emulsion inhibitors, combustion accelerators and corrosion inhibitors.
Additives may be used singly or in combination of two or more.

The heavy oil composition of the present invention has a sulfur content of 0.50% by mass or less, preferably 0.01 to 0.50% by mass, more preferably 0.10 to 0.50% by mass.

The heavy oil composition of the present invention can easily control the sulfur content to 0.50% by mass or less by containing predetermined amounts of the direct desulfurized heavy oil and the base material A.

The heavy oil composition of the present invention preferably has a density (density at 15° C.) of 0.9000 g/cm ³ to 1.0300 g/cm ³ , more preferably 0.92 g/cm ³ to 1.00 g/cm ³ , even more preferably 0.94 g/cm ³ to 0.98 g/cm ³ .

The heavy oil composition of the present invention has a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less, preferably 5.00 mm ² /sec to 100.00 mm ² /sec, more preferably 5.00 mm ² /sec to 80.00 mm ² /sec.

The heavy oil composition of the present invention has a CCAI of 825-870, preferably 830-870, more preferably 840-870.
When the CCAI is within the above range, it is possible to provide a heavy oil composition with excellent storage stability and excellent ignitability.

Since the heavy oil composition of the present invention contains a predetermined amount of direct desulfurized heavy oil and a predetermined amount of base material A having specific properties, the density, kinematic viscosity and CCAI can be easily controlled within desired ranges.

The heavy oil composition of the present invention preferably has an aromatic content of 20 to 34% by mass, more preferably 20 to 32% by mass, and more preferably 20 to 30% by mass.

The heavy oil composition of the present invention has an aromatic content within the above range, so that the affinity for asphaltenes contained in the heavy oil composition can be increased, the stability thereof can be easily improved, and the latent sediment amount can be easily reduced.

The heavy oil composition of the present invention preferably has an actual sediment content of 0.1% by mass or less, more preferably 0.09% by mass or less, even more preferably 0.01 to 0.08% by mass, and particularly preferably 0.01 to 0.07% by mass.
In the heavy oil composition of the present invention, since the actual sediment is within the above range, the formation of sludge can be easily suppressed even if the heavy oil composition is heated for a long time.

The heavy oil composition of the present invention can be suitably produced by the production method of the present invention, which will be described later.

As the heavy oil composition of the present invention, a C heavy oil composition can be mentioned, and such a C heavy oil composition can be suitably used, for example, as fuel for ships.

According to the present invention, even when a large amount of base material corresponding to slurry oil is contained, the sulfur content is reduced to 0.50% by mass or less, and a heavy oil composition that can control CCAI within a desired range can be provided.

Next, the method for producing the heavy oil composition of the present invention will be described.
The production method of the present invention is a method for producing a heavy oil composition,
Direct-section desulfurized heavy oil is 1 to 35% by volume,
The base material A, excluding the direct desulfurized heavy oil, having a CCAI of 900 or less, a kinematic viscosity of 100.00 mm ² /s or less, and a density of 0.9400 g/cm ³ to 1.2000 g/cm ³ is mixed so as to be 65 to 99% by volume,
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870,
It is characterized by obtaining a heavy oil composition.

Details of the direct desulfurized heavy oil, base material A, and other base materials used as necessary in the method for producing the fuel oil composition of the present invention are as described above.

In the method for producing the heavy oil composition of the present invention, the direct desulfurized heavy oil, base material A, and other base materials used as necessary can be mixed by any method.

In the method for producing a heavy oil composition of the present invention, 1% to 35% by volume of directly desulfurized heavy oil is mixed, preferably 1% to 30% by volume, and more preferably 1% to 25% by volume.

In the method for producing a heavy oil composition of the present invention, by setting the mixing ratio of the directly desulfurized heavy oil within the above range, the sulfur content ratio is reduced to 0.50% by mass or less, and a heavy oil composition capable of controlling CCAI within a desired range can be easily provided.

In the method for producing the heavy oil composition of the present invention, 65% to 99% by volume of the base material A is mixed, preferably 65% to 90% by volume, and more preferably 65% to 80% by volume.

In the method for producing a heavy oil composition of the present invention, by setting the mixing ratio of the base material A within the above range, the sulfur content in the resulting heavy oil composition can be easily reduced, while CCAI can be easily controlled within a desired range.

The details of the heavy oil composition obtained by the production method of the present invention are as described above.
As the heavy oil composition obtained by the production method of the present invention, C heavy oil composition can be mentioned in particular, and such C heavy oil composition can be suitably used, for example, as marine fuel.

According to the present invention, even when a large amount of a base material corresponding to slurry oil is contained, the sulfur content is reduced to 0.50% by mass or less, and a method for easily producing a heavy oil composition that can control CCAI within a desired range can be provided.

EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited to these Examples.

(Examples 1 to 9 and Comparative Examples 1 to 2, Reference Example 1)
Using directly desulfurized heavy oil (DDSP), slurry oil 1 (SLO1), slurry oil 2 (SLO2), catalytically cracked light oil (LCO) and straight run light oil (LGO) having the properties shown in Table 2, C heavy oil compositions according to Examples 1 to 9, Comparative Examples 1 to 2, and Reference Example 1 were prepared by blending in the proportions shown in Tables 3 and 4, respectively.
Tables 3 and 4 show the properties of each heavy oil composition obtained.

The saturated content (% by volume), the olefin content (% by volume), the monocyclic aromatic content (by volume), the bicyclic aromatic content (% by volume), the three or more ring aromatics (% by volume), and the total aromatic content (% by volume), which constitute LCO and LGO shown in Table 2, respectively, mean values analyzed by gas chromatography-mass spectrometry (GC-MS) and analyzed according to ASTM D 2786.
Specifically, after separating the sample into saturated and aromatic components by high performance liquid chromatography (HPLC), each fraction was quantified by GC-FID, and the area ratio of each was calculated as % by mass. In addition, after measuring each fraction by GC-MS to obtain an average mass spectrum, the saturated content was analyzed by ASTM D 2786, and the aromatic content was analyzed by ASTM D 3239, and the ratio by type was calculated in volume %.

From Tables 2 to 4, the heavy oil compositions of the present invention obtained in Examples 1 to 9 have specific properties obtained by blending predetermined amounts of direct desulfurized heavy oil and base material A having specific properties. Therefore, even when a large amount of heavy base material is contained, the sulfur content is reduced to 0.50% by mass or less, and the heavy oil composition described in Reference Example 1 in which a large amount of catalytically cracked light oil (LCO) is used as a base material instead of base material A. It can be seen that they exhibit equivalent CCAI.

On the other hand, from Tables 2 and 4, it can be seen that the comparative heavy oil compositions obtained in Comparative Examples 1 and 2 have a high CCAI and poor ignition performance (Comparative Example 1) and a low CCAI and poor storage stability (Comparative Example 2) because the blending ratio of the direct desulfurized heavy oil or the base material A having specific properties is outside the predetermined range (Comparative Example 2), or the base material A having specific properties is not blended (Comparative Example 1).

According to the present invention, it is possible to provide a heavy oil composition in which the sulfur content is reduced to 0.50% by mass or less even when a heavy base material is contained in a large amount, and the CCAI can be controlled within a desired range, and a method for producing a heavy oil composition can be provided.

Claims (4)

1 to 10% by volume of direct desulfurized heavy oil,
A base material other than directly desulfurized heavy oil, which contains 80 to 99% by volume of a slurry oil having a sulfur content of 0.01 to 0.70% by mass, a CCAI of 800 to 900, a kinematic viscosity at 50°C of 100.00 mm ² /s or less, and a density at 15°C of 0.9400 g/cm ³ to 1.2000 g/cm ³ ,
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870
A heavy oil composition characterized by: 2. The heavy oil composition according to claim 1, wherein the slurry oil has an aromatic content of 41% by mass or less and a resin content of 1.0% to 5.0% by mass. A method for producing a heavy oil composition, comprising:
1 to 10% by volume of direct desulfurized heavy oil,
A slurry oil having a sulfur content of 0.01 to 0.70% by mass, a CCAI of 800 to 900, a kinematic viscosity at 50°C of 100.00 mm ² /s or less, and a density at 15°C of 0.9400 g/cm ³ to 1.2000 g/cm ³ is mixed so as to be 80 to 99% by volume.
a sulfur content of 0.50% by mass or less,
a kinematic viscosity at 50° C. of 55.00 mm ² /sec or less;
CCAI is 825-870
A method for producing a heavy oil composition, characterized in that a heavy oil composition is obtained. 4. The method for producing a heavy oil composition according to claim 3, wherein the slurry oil has an aromatic content of 41% by mass or less and a resin content of 1.0% to 5.0% by mass.