Fluid catalytically cracked residual oil, catalytically cracked gas oil, starting material oil for carbon black, and carbon black

Abstract

The present invention relates to a starting material oil for carbon black, said starting material oil containing a catalytically cracked gas oil and a fluid catalytically cracked residual oil, wherein the starting material oil for carbon black has a density of 1.00-1.40 g / cm3 at 15°C and a dynamic viscosity of 18 mm2 / s or less at 100°C, contains at most 1.15 mass% sulfur components, and has a BMCI of 95-150.

Description

Fluid catalytic cracking residue, catalytic cracking light oil, raw material oil for carbon black, and carbon black

[0001] The present invention relates to fluid catalytic cracking residue, catalytic cracking light oil, raw material oil for carbon black, and carbon black. This application claims priority based on Japanese Patent Application No. 2024-230167 filed in Japan on December 26, 2024, and incorporates the content herein by reference.

[0002] Due to the decreasing demand for heavy oil, the effective utilization of surplus heavy oil has been under consideration. Examples of heavy oil include atmospheric distillation residue obtained by treating crude oil with an atmospheric distillation unit, vacuum distillation residue obtained by treating the atmospheric distillation residue with a vacuum distillation unit, direct desulfurized residue obtained by directly treating the atmospheric distillation residue with a hydrodesulfurization unit, fluid catalytic cracking residue obtained by a fluid catalytic cracking reaction, ethylene bottom oil by-produced in an ethylene cracker using naphtha as a raw material, catalytic reforming residue by-produced in catalytic reforming using naphtha as a raw material, and the like.

[0003] As part of the effective utilization of heavy oil, the production of carbon materials using heavy oil has been under consideration. Conventionally, mainly coal-based residual oil has been used for the production of carbon materials. Carbon materials have required characteristics depending on their type, and said characteristics are derived from the characteristics of the raw material oil. For example, when the carbon material is carbon black, a raw material oil with appropriate ranges of density, kinematic viscosity, sulfur content, and BMCI is required for product quality and efficient production.

[0004] Patent Document 1 discloses that, with respect to 100 parts by mass of a coal tar residual oil-containing liquid containing a coal tar residual oil having a viscosity at 70 °C of 300 mPa·s or less, one or more selected from A heavy oil, C heavy oil, and FCC residue oil are mixed in an amount of 10 to 50 parts by mass to prepare a mixed oil, and then aggregates generated in the mixed oil are removed by centrifugation to prepare a raw material oil for carbon black having a quinoline-insoluble content ratio of 0.5 to 2% by mass. A method for producing a raw material oil for carbon black is disclosed.

[0005] Japanese Patent No. 5988127

[0006] In the method for producing a raw material oil for carbon black described in Patent Document 1, the use of coal tar residue oil derived from coal is essential. From the perspective of more flexible utilization of heavy oil derived from crude oil, it is necessary to produce carbon materials using a raw material oil composed of a combination of heavy oils derived from crude oil. The present invention has been made in view of the above circumstances, and an object thereof is to provide a fluid catalytic cracking residue oil and a catalytic cracking light oil used for a raw material oil for carbon black that enables effective utilization of heavy oil. Another object is to provide a raw material oil for carbon black containing the fluid catalytic cracking residue oil and the catalytic cracking light oil, and carbon black produced from the raw material oil for carbon black.

[0007] In order to solve the above problems, the present invention has the following aspects. [1A] A fluid catalytic cracking residue oil for producing a raw material oil for carbon black by mixing with a catalytic cracking light oil, wherein the density of the raw material oil for carbon black at 15 ° C is 1.00 to 1.40 g / cm ３ and the kinematic viscosity at 100 ° C is 18 mm ２ / s or less, the sulfur content is 1.15 mass% or less, and the BMCI is 95 to 150. [1B] The density of the raw material oil for carbon black at 15 ° C is 1.00 to 1.30 g / cm ３ , 1.05 to 1.30 g / cm ３ , 1.00 to 1.15 g / cm ３ , or 1.05 to 1.15 g / cm ３ and the kinematic viscosity at 100 ° C is 15 mm ２ / s or less, 13 mm ２ / s or less, 1 to 18 mm ２ / s, 1 to 15 mm ２ / s, or 1 to 13 mm ２The fluid catalytic cracking residue according to [1A], wherein the ratio is / s, the sulfur content is 1.1% by mass or less, 1.08% by mass or less, 0.10 to 1.15% by mass, 0.10 to 1.1% by mass, or 0.10 to 1.08% by mass, and the BMCI is 100 to 140 or 110 to 140. [1C] The fluid catalytic cracking residue according to [1A] or [1B], wherein the asphaltene content of the carbon black feedstock oil is 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 0.1 to 5.0% by mass, 0.1 to 4.0% by mass, or 0.1 to 3.0% by mass. [1D] The fluid catalytic cracking residue according to any one of [1A] to [1C], wherein the nitrogen content of the raw material oil for carbon black is 0.2% by mass or less, 0.15% by mass or less, 0.12% by mass or less, 0.01 to 0.2% by mass, 0.01 to 0.15% by mass, or 0.01 to 0.12% by mass. [1E] The fluid catalytic cracking residue according to any one of [1A] to [1D], wherein the ash content of the raw material oil for carbon black is 0.1% by mass or less, 0.05% by mass or less, 0.045% by mass or less, 0.01 to 0.1% by mass, 0.01 to 0.05% by mass, or 0.01 to 0.045% by mass. [1F] The density of the fluid catalytic cracking residue at 15°C is 0.96 to 1.40 g / cm³. ３ , 1.00~1.40g / cm ３ , or 1.07 to 1.40 g / cm³ ３ The kinematic viscosity at 100°C is 50 mm². ２ / s or less, 40mm ２ / s or less, 30mm ２ / s or less, 19-50mm ２ / s, 19-40mm ２ / s, or 19-30 mm ２The fluid catalytic cracking residue according to any one of [1A] to [1E], wherein the sulfur content is 1.40% by mass or less, 1.35% by mass or less, 1.20% by mass or less, 0.1 to 1.40% by mass, 0.1 to 1.35% by mass, 0.1 to 1.20% by mass, greater than 1.15% by mass and 1.40% by mass or less, greater than 1.15% by mass and 1.35% by mass or less, or greater than 1.15% by mass and 1.20% by mass or less, and the BMCI is 100 to 150, 110 to 150, or 120 to 140. [1G] The fluid catalytic cracking residue according to any one of [1A] to [1F], wherein the asphaltene content of the fluid catalytic cracking residue is 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 0.1 to 5.0% by mass, 0.1 to 4.0% by mass, or 0.1 to 3.0% by mass. [1H] The fluid catalytic cracking residue according to any one of [1A] to [1G], wherein the nitrogen content of the fluid catalytic cracking residue is 0.30% by mass or less, 0.25% by mass or less, 0.15% by mass or less, 0.01 to 0.30% by mass, 0.01 to 0.25% by mass, or 0.01 to 0.15% by mass. [1I] The fluid catalytic cracking residue according to any one of [1A] to [1H], wherein the ash content of the fluid catalytic cracking residue is 0.5% by mass or less, 0.4% by mass or less, 0.1% by mass or less, 0.001 to 0.5% by mass, 0.001 to 0.4% by mass, or 0.001 to 0.1% by mass. [2A] Catalytic cracking light oil for producing raw material oil for carbon black by mixing with fluid catalytic cracking residue, wherein the density of the raw material oil for carbon black at 15°C is 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C is 18 mm². ２ Catalytic cracking diesel fuel having a density of 1.15% by mass or less, a sulfur content of 1.15% by mass or less, and a BMCI of 95 to 150. [2B] The density of the carbon black feedstock oil at 15°C is 1.00 to 1.30 g / cm³. ３ , 1.05-1.30g / cm ３ , 1.00-1.15g / cm ３ , or 1.05 to 1.15 g / cm³ ３ The kinematic viscosity at 100°C is 15 mm². ２ / s or less, 13mm ２ / s or less, 1-18mm ２ / s, 1-15mm ２ / s, or 1-13 mm ２[2A] Catalytic cracking diesel fuel according to [2A], wherein the sulfur content is 1.1% by mass or less, 1.08% by mass or less, 0.10 to 1.15% by mass, 0.10 to 1.1% by mass, or 0.10 to 1.08% by mass, and the BMCI is 100 to 140 or 110 to 140. [2C] Catalytic cracking diesel fuel according to [2A] or [2B], wherein the asphaltene content of the carbon black feedstock oil is 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 0.1 to 5.0% by mass, 0.1 to 4.0% by mass, or 0.1 to 3.0% by mass. [2D] The catalytic cracking diesel fuel according to any one of [2A] to [2C], wherein the nitrogen content of the raw material oil for carbon black is 0.2% by mass or less, 0.15% by mass or less, 0.12% by mass or less, 0.01 to 0.2% by mass, 0.01 to 0.15% by mass, or 0.01 to 0.12% by mass. [2E] The catalytic cracking diesel fuel according to any one of [2A] to [2D], wherein the ash content of the raw material oil for carbon black is 0.1% by mass or less, 0.05% by mass or less, 0.045% by mass or less, 0.01 to 0.1% by mass, 0.01 to 0.05% by mass, or 0.01 to 0.045% by mass. [2F] The density of the catalytic cracking diesel fuel at 15°C is 0.75 to 0.99 g / cm³. ３ , 0.80-0.97g / cm ３ , or 0.85-0.95 g / cm³ ３ The kinematic viscosity at 100°C is 10 mm ２ / s or less, 5mm ２ / s or less, 3mm ２ / s or less, 0.5-10mm ２ / s, 0.5-5mm ２ / s, or 0.5-3 mm ２[2G] Catalytic cracking diesel fuel according to any one of [2A] to [2E], wherein the sulfur content is 0.50% by mass or less, 0.30% by mass or less, 0.20% by mass or less, 0.01 to 0.50% by mass, 0.01 to 0.30% by mass, or 0.01 to 0.20% by mass, and the BMCI is 50 to 90, 55 to 85, or 55 to 80. [2G] Catalytic cracking diesel fuel according to any one of [2A] to [2F], wherein the asphaltene content of the catalytic cracking diesel fuel is 1% by mass or less, 0.1% by mass or less, 0.01% by mass or less, 0.001 to 1% by mass, 0.001 to 0.1% by mass, or 0.001 to 0.01% by mass. [2H] The catalytic cracking light oil according to any one of [2A] to [2G], wherein the nitrogen content of the catalytic cracking light oil is 0.2% by mass or less, 0.15% by mass or less, 0.1% by mass or less, 0.01 to 0.2% by mass, 0.01 to 0.15% by mass, or 0.01 to 0.1% by mass. [2I] The catalytic cracking light oil according to any one of [2A] to [2H], wherein the ash content of the catalytic cracking light oil is 0.1% by mass or less, 0.01% by mass or less, 0.005% by mass or less, 0.0001 to 0.1% by mass, 0.0001 to 0.01% by mass, or 0.0001 to 0.005% by mass. [3A] A raw material oil for carbon black comprising catalytic cracking light oil and fluid catalytic cracking residue, wherein the density of the raw material oil for carbon black at 15°C is 1.00 to 1.40 g / cm³ ３ The kinematic viscosity at 100°C is 18 mm². ２ [3B] A raw material oil for carbon black having a density of 1.00 to 1.30 g / cm³ at 15°C. ３ , 1.05-1.30g / cm ３ , 1.00-1.15g / cm ３ , or 1.05 to 1.15 g / cm³ ３ The kinematic viscosity at 100°C is 15 mm². ２ / s or less, 13mm ２ / s or less, 1-18mm ２ / s, 1-15mm ２ / s, or 1-13 mm ２The carbon black raw material oil according to [3A], wherein the sulfur content is 1.1% by mass or less, 1.08% by mass or less, 0.10 to 1.15% by mass, 0.10 to 1.1% by mass, or 0.10 to 1.08% by mass, and the BMCI is 100 to 140 or 110 to 140. [3C] The carbon black raw material oil according to [3A] or [3B], wherein the asphaltene content of the carbon black raw material oil is 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 0.1 to 5.0% by mass, 0.1 to 4.0% by mass, or 0.1 to 3.0% by mass. [3D] The carbon black raw material oil according to any one of [3A] to [3C], wherein the nitrogen content of the carbon black raw material oil is 0.2% by mass or less, 0.15% by mass or less, 0.12% by mass or less, 0.01 to 0.2% by mass, 0.01 to 0.15% by mass, or 0.01 to 0.12% by mass. [3E] The carbon black raw material oil according to any one of [3A] to [3D], wherein the ash content of the carbon black raw material oil is 0.1% by mass or less, 0.05% by mass or less, 0.045% by mass or less, 0.01 to 0.1% by mass, 0.01 to 0.05% by mass, or 0.01 to 0.045% by mass. [3F] The carbon black raw material oil according to any one of [3A] to [3E], wherein the total content of catalytic cracking light oil and fluid catalytic cracking residue relative to the total volume of the carbon black raw material oil is 80% by volume or more. [3G] A carbon black raw material oil according to any one of [3A] to [3F], wherein the total content of catalytic cracking light oil and fluid catalytic cracking residue relative to the total volume of the carbon black raw material oil is 90% by volume or more, 95% by volume or more, or 100% by volume. [3H] A carbon black raw material oil according to any one of [3A] to [3G], wherein the volume ratio of the content of catalytic cracking light oil to the content of fluid catalytic cracking residue is 0.05 to 0.8, 0.05 to 0.5, 0.05 to 0.4, or 0.1 to 0.3. [4] Carbon black produced from a carbon black raw material oil according to any one of [3A] to [3H].

[0008] According to the present invention, it is possible to provide fluid catalytic cracking residue and catalytic cracking light oil used as raw material oil for carbon black, which enable the effective utilization of heavy oil. Furthermore, it is possible to provide a raw material oil for carbon black containing the fluid catalytic cracking residue and the catalytic cracking light oil, as well as carbon black produced from the raw material oil for carbon black.

[0009] The embodiments of the present invention will be described in detail below, but the following description is merely one example of an embodiment of the present invention, and the present invention is not limited to these contents and can be modified and implemented within the scope of its gist.

[0010] <Definitions> The definitions of terms used herein are as follows: Fluid catalytic cracking residue is the residue obtained when cracked oil, which is obtained by contacting raw material oil with a fluid catalytic cracking catalyst in a fluid catalytic cracking unit, is distilled. Examples of the raw material oil include atmospheric distillation residue, vacuum distillation residue, and vacuum distilled light oil obtained by treating atmospheric distillation residue with a vacuum distillation unit. That is, the fluid catalytic cracking unit also includes a residue fluid catalytic cracking unit. Catalytic cracking light oil refers to a fraction obtained as an intermediate fraction when raw material oil is subjected to fluid catalytic cracking in a fluid catalytic cracking unit or a residue fluid catalytic cracking unit, with a boiling point range of 170°C to 390°C in atmospheric distillation. The raw material oil is the same as described for fluid catalytic cracking residue. Catalytic cracking light oil is the heaviest fraction of the distillate of cracked oil, and fluid catalytic cracking residue is a fraction heavier than catalytic cracking light oil. There are no particular restrictions on the fluid catalytic cracking unit or residue fluid catalytic cracking unit, and known equipment can be used.

[0011] The density at 15°C can be measured in accordance with JIS K 2249-1:2011 "Crude oil and petroleum products - Method for determining density - Part 1: Vibration method". The Bureau of Mines Correlation Index (BMCI) can be calculated from the mean boiling point T (°C) and the specific gravity S compared to water at 60°F using the following formula: S is the density of the oil being measured at 60°F relative to the density of water at 60°F. BMCI = 48640 / (T + 273) + 473.7S - 456.8 The kinematic viscosity at 100°C can be measured in accordance with JIS K 2283:2000 "Crude oil and petroleum products - Method for testing kinematic viscosity and calculating viscosity index". The asphaltene content can be measured in accordance with JPI-5S-22-83 "Compositional analysis of asphalt by column chromatography". Sulfur content can be measured in accordance with JIS K 2541-4:2003 "Crude oil and petroleum products - Test methods for sulfur content, Part 4: Radiation excitation method". Nitrogen content can be measured in accordance with JIS K 2609:2022 "Crude oil and petroleum products - Chemiluminescence method for nitrogen content". Ash content can be measured in accordance with JIS K 2272:1998 "Crude oil and petroleum products - Test methods for ash content and sulfated ash". In this specification, the lower and upper limits of the oil properties parameters can be arbitrarily combined.

[0012] ≪Fluid Catalytic Cracking Residue≫ The fluid catalytic cracking residue in this embodiment is fluid catalytic cracking residue used to produce raw material oil for carbon black by mixing it with catalytic cracking light oil. By mixing the fluid catalytic cracking residue with catalytic cracking light oil, the density of the raw material oil for carbon black at 15°C is increased to 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C was 18 mm ２ The sulfur content can be adjusted to 1.15% by mass or less, and the BMCI to 95-150.

[0013] The density of the residual fluid catalytic cracking oil at 15°C is 0.96–1.40 g / cm³. ３ Preferably, it is 1.00 to 1.40 g / cm³. ３ It is more preferable that the concentration be 1.07 to 1.40 g / cm³. ３It is even more preferable that the density of the fluid catalytic cracking residue at 15°C is within the aforementioned range, as this makes it easier to adjust the density to that of the raw material oil for carbon black, as described later.

[0014] The BMCI of the fluid catalytic cracking residue is preferably 100 to 150, more preferably 110 to 150, and even more preferably 120 to 140. When the BMCI of the fluid catalytic cracking residue is within the above range, it becomes easier to adjust it to the BMCI of the carbon black feedstock oil described later.

[0015] The kinematic viscosity of the residual fluid in catalytic cracking at 100°C is 50 mm². ２ Preferably, it should be less than or equal to 40 mm ２ It is more preferable that it be less than or equal to / s, and 30 mm ２ It is even more preferable that the kinematic viscosity is less than or equal to / s. A lower limit of kinematic viscosity is, for example, 19 mm. ２ The values ​​given are / s. The kinematic viscosity is 19-50 mm². ２ It is preferable that it be / s, and 19 to 40 mm ２ It is more preferable that it be / s, and 19-30 mm ２ It is even more preferable that the kinematic viscosity of the fluid catalytic cracking residue at 100°C is below the above upper limit. If the kinematic viscosity of the fluid catalytic cracking residue at 100°C is below the above upper limit, it becomes easier to adjust it to the kinematic viscosity of the carbon black raw material oil described later. Since the kinematic viscosity of the fluid catalytic cracking residue at 100°C is high, it is difficult to use it as a raw material oil for carbon black as is. In the present invention, the kinematic viscosity can be adjusted by mixing it with catalytic cracking diesel fuel.

[0016] The asphaltene content of the fluid catalytic cracking residue is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably 3.0% by mass or less. For example, the lower limit of the asphaltene content is 0.1% by mass. The asphaltene content is preferably 0.1 to 5.0% by mass, more preferably 0.1 to 4.0% by mass, and even more preferably 0.1 to 3.0% by mass. If the asphaltene content of the fluid catalytic cracking residue is below the above upper limit, it becomes easier to adjust it to the asphaltene content of the raw material oil for carbon black described later.

[0017] The sulfur content of the fluid catalytic cracking residue is preferably 1.40% by mass or less, more preferably 1.35% by mass or less, and even more preferably 1.20% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it can be 0.1% by mass. The sulfur content of the fluid catalytic cracking residue may be high, for example, it may exceed 1.15% by mass. The sulfur content is preferably 0.1 to 1.40% by mass, more preferably 0.1 to 1.35% by mass, and even more preferably 0.1 to 1.20% by mass. The sulfur content is preferably greater than 1.15% by mass and 1.40% by mass or less, more preferably greater than 1.15% by mass and 1.35% by mass or less, and even more preferably greater than 1.15% by mass and 1.20% by mass or less. If the sulfur content of the fluid catalytic cracking residue is below the above upper limit, it becomes easier to adjust it to the sulfur content of the raw material oil for carbon black described later. Because the sulfur content of residual fluid catalytic cracking is high, it is difficult to use it directly as a raw material for carbon black. In this invention, the sulfur content can be adjusted by mixing it with catalytic cracking diesel fuel.

[0018] The nitrogen content of the fluid catalytic cracking residue is preferably 0.30% by mass or less, more preferably 0.25% by mass or less, and even more preferably 0.15% by mass or less. The lower limit of the nitrogen content is not particularly limited, but for example, it can be 0.01% by mass. The nitrogen content is preferably 0.01 to 0.30% by mass, more preferably 0.01 to 0.25% by mass, and even more preferably 0.01 to 0.15% by mass. If the nitrogen content of the fluid catalytic cracking residue is below the above upper limit, it becomes easier to adjust it to the nitrogen content of the raw material oil for carbon black described later.

[0019] The ash content of the fluid catalytic cracking residue is preferably 0.5% by mass or less, more preferably 0.4% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the ash content is not particularly limited, but for example, it is 0.001% by mass. The ash content is preferably 0.001 to 0.5% by mass, more preferably 0.001 to 0.4% by mass, and even more preferably 0.001 to 0.1% by mass. If the ash content of the fluid catalytic cracking residue is below the above upper limit, it becomes easier to adjust it to the ash content of the raw material oil for carbon black described later.

[0020] ≪Catalytic Cracking Light Oil≫ The catalytic cracking light oil of this embodiment is catalytic cracking light oil for producing raw material oil for carbon black by mixing it with fluid catalytic cracking residue. By mixing catalytic cracking light oil with fluid catalytic cracking residue, the density of the raw material oil for carbon black at 15°C is increased to 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C was 18 mm ２ The sulfur content can be adjusted to 1.15% by mass or less, and the BMCI to 95-150.

[0021] The density of catalytic cracking diesel fuel at 15°C is 0.75–0.99 g / cm³. ３ Preferably, it is 0.80 to 0.97 g / cm³. ３ It is more preferable that the amount be 0.85 to 0.95 g / cm³. ３ It is even more preferable that the density of catalytic cracking diesel fuel at 15°C is within the aforementioned range. If the density of catalytic cracking diesel fuel at 15°C is within the aforementioned range, it becomes easier to adjust it to the density of the raw material oil for carbon black described later. Since the density of catalytic cracking diesel fuel at 15°C is low, it is difficult to use it as raw material oil for carbon black as is. In the present invention, the density at 15°C can be adjusted by mixing it with the residual fluid catalytic cracking oil.

[0022] The BMCI of catalytic cracking diesel fuel is preferably 50 to 90, more preferably 55 to 85, and even more preferably 55 to 80. When the BMCI of catalytic cracking diesel fuel is within the above range, it becomes easier to adjust it to the BMCI of the carbon black feedstock oil described later. Because the BMCI of catalytic cracking diesel fuel is low, it is difficult to use it as is as a feedstock oil for carbon black. In the present invention, the BMCI can be adjusted by mixing it with the residual fluid catalytic cracking oil.

[0023] The kinematic viscosity of catalytic cracking diesel fuel at 100°C is 10 mm². ２ It is preferable that it be less than or equal to 5 mm ２ It is more preferable that it be less than or equal to / s, and 3 mm ２ It is even more preferable that the kinematic viscosity is less than or equal to / s. A lower limit of kinematic viscosity is, for example, 0.5 mm. ２ The values ​​given are / s. The kinematic viscosity is 0.5 to 10 mm². ２ It is preferable that the value be / s, and the value is 0.5 to 5 mm. ２ It is more preferable that the value be / s, and the value is 0.5 to 3 mm. ２ It is even more preferable that the kinematic viscosity of the catalytic cracking diesel fuel at 100°C is below the aforementioned upper limit.

[0024] The asphaltene content of catalytic cracking diesel fuel is preferably 1% by mass or less, more preferably 0.1% by mass or less, and even more preferably 0.01% by mass or less. For example, the lower limit of the asphaltene content is 0.001% by mass. The asphaltene content is preferably 0.001 to 1% by mass, more preferably 0.001 to 0.1% by mass, and even more preferably 0.001 to 0.01% by mass. When the asphaltene content of catalytic cracking diesel fuel is below the above upper limit, it becomes easier to adjust it to the asphaltene content of the raw material oil for carbon black described later.

[0025] The sulfur content of catalytic cracking diesel fuel is preferably 0.50% by mass or less, more preferably 0.30% by mass or less, and even more preferably 0.20% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it can be 0.01% by mass. The sulfur content is preferably 0.01 to 0.50% by mass, more preferably 0.01 to 0.30% by mass, and even more preferably 0.01 to 0.20% by mass. If the sulfur content of catalytic cracking diesel fuel is below the above upper limit, it becomes easier to adjust it to the sulfur content of the raw material oil for carbon black described later.

[0026] The nitrogen content of catalytic cracking diesel fuel is preferably 0.2% by mass or less, more preferably 0.15% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the nitrogen content is not particularly limited, but for example, it is 0.01% by mass. The nitrogen content is preferably 0.01 to 0.2% by mass, preferably 0.01 to 0.15% by mass, and even more preferably 0.01 to 0.1% by mass. If the nitrogen content of catalytic cracking diesel fuel is below the above upper limit, it becomes easier to adjust it to the nitrogen content of the raw material oil for carbon black described later.

[0027] The ash content of catalytic cracking diesel fuel is preferably 0.1% by mass or less, more preferably 0.01% by mass or less, and even more preferably 0.005% by mass or less. The lower limit of the ash content is not particularly limited, but for example, it is 0.0001% by mass. The ash content is preferably 0.0001 to 0.1% by mass, more preferably 0.0001 to 0.01% by mass, and even more preferably 0.0001 to 0.005% by mass. If the ash content of catalytic cracking diesel fuel is below the above upper limit, it becomes easier to adjust it to the ash content of the raw material oil for carbon black described later.

[0028] ≪Federation Oil for Carbon Black≫ The fuel oil for carbon black in this embodiment (hereinafter also simply referred to as "fuel oil") includes catalytic cracking diesel fuel and fluid catalytic cracking residue. The density of the fuel oil at 15°C is 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C is 18 mm². ２The pH is less than or equal to / s, the sulfur content is 1.15% by mass or less, and the BMCI is 95-150.

[0029] The raw material oil includes catalytically cracked diesel fuel and fluid catalytic cracking residue. The total content of catalytically cracked diesel fuel and fluid catalytic cracking residue relative to the total volume of the raw material oil is preferably 80% by volume or more, more preferably 90% by volume or more, and even more preferably 95% by volume or more. The total content of catalytically cracked diesel fuel and fluid catalytic cracking residue relative to the total volume of the raw material oil may be 100% by volume.

[0030] The raw material oil may include catalytic cracking diesel fuel and fluid catalytic cracking residue, as well as heavy extracts, which are particularly heavy oils among the oils extracted and removed by solvent extraction of lubricating oil base oils, such as atmospheric distillation residue, vacuum distillation residue, cutback residue obtained by mixing vacuum distillation residue with a light base material, direct desulfurization residue, atmospheric distillation diesel fuel, vacuum distillation diesel fuel, hydrodesulfurization diesel fuel, hydrocracked heavy oil, etc., as well as pyrolysis heavy oil, pyrolysis diesel fuel, tumbled gravel oil, and coal tar residue. It is preferable that the raw material oil substantially does not contain coal tar residue in order to effectively utilize the surplus heavy oil, but it may contain it. If coal tar residue is included, the content of coal tar residue relative to the total volume of the raw material oil is preferably 40% by volume or less, more preferably 20% by volume or less, and particularly preferably 1% by volume or less.

[0031] The volume ratio of catalytic cracking diesel fuel to the content of fluid catalytic cracking residue is preferably 0.05 to 0.8, more preferably 0.05 to 0.5, even more preferably 0.05 to 0.4, and particularly preferably 0.1 to 0.3. When the volume ratio is within the above range, it is easier to satisfy the properties of the raw material oil described later.

[0032] The density of the raw material oil at 15°C is 1.00–1.40 g / cm³. ３ The concentration is 1.00 to 1.30 g / cm³. ３ Preferably, it is 1.05 to 1.30 g / cm³. ３ It is more preferable that this is the case. In one embodiment, the density of the raw material oil at 15°C is 1.00 to 1.15 g / cm³. ３Preferably, it is 1.05 to 1.15 g / cm³. ３ It is more preferable that the density is above the aforementioned lower limit.

[0033] The BMCI of the raw material oil is 95 to 150, preferably 100 to 140, and more preferably 110 to 140. When the BMCI is above the lower limit, the yield of carbon black tends to improve. When the BMCI is below the upper limit, the particle size distribution of the resulting carbon black does not become too sharp, which does not negatively affect the low heat generation properties.

[0034] The kinematic viscosity of the raw material oil at 100°C is 18 mm². ２ / s or less, 15 mm ２ Preferably, it should be less than or equal to 13 mm ２ It is more preferable that the kinematic viscosity is less than or equal to / s. A lower limit of kinematic viscosity is, for example, 1 mm. ２ The values ​​given are / s. The kinematic viscosity is 1 to 18 mm ２ It is preferable that it be / s, and 1 to 15 mm ２ It is more preferable that it be / s, and 1 to 13 mm ２ It is even more preferable that the kinematic viscosity is less than or equal to the upper limit. When the kinematic viscosity is below the upper limit, oil can be easily and efficiently supplied through piping.

[0035] The asphaltene content of the raw material oil is preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably 3.0% by mass or less. For example, the lower limit of the asphaltene content is 0.1% by mass. The asphaltene content is preferably 0.1 to 5.0% by mass, more preferably 0.1 to 4.0% by mass, and even more preferably 0.1 to 3.0% by mass. When the asphaltene content is below the above upper limit, premature coking is suppressed and coarse particles are less likely to be generated.

[0036] The sulfur content of the raw material oil is 1.15% by mass or less, preferably 1.1% by mass or less, and more preferably 1.08% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it can be 0.1% by mass. The sulfur content is preferably 0.10 to 1.15% by mass, more preferably 0.10 to 1.1% by mass, and even more preferably 0.10 to 1.08% by mass. The sulfur content of the raw material oil is directly accumulated in the carbon black. Therefore, if the sulfur content is below the above upper limit, the sulfur content of the carbon black is also reduced, which is preferable from the viewpoint of controlling SOx concentration and total amount in the manufacturing equipment.

[0037] The nitrogen content of the raw material oil is preferably 0.2% by mass or less, more preferably 0.15% by mass or less, and even more preferably 0.12% by mass or less. The lower limit of the nitrogen content is not particularly limited, but for example, it is 0.01% by mass. The nitrogen content is preferably 0.01 to 0.2% by mass, more preferably 0.01 to 0.15% by mass, and even more preferably 0.01 to 0.12% by mass. The nitrogen content of the raw material oil is directly accumulated in the carbon black. Therefore, if the nitrogen content is below the above upper limit, the nitrogen content of the carbon black is also reduced, which is preferable from the viewpoint of controlling NOx concentration and total amount in the manufacturing facility.

[0038] The ash content of the raw material oil is preferably 0.1% by mass or less, more preferably 0.05% by mass or less, and even more preferably 0.045% by mass or less. The lower limit of the ash content is not particularly limited, but for example, it is 0.01% by mass. The ash content is preferably 0.01 to 0.1% by mass, more preferably 0.01 to 0.05% by mass, and even more preferably 0.01 to 0.045% by mass. When the ash content is below the above upper limit, the quality of the carbon black, such as reduced wear and increased strength, tends to improve.

[0039] <Method for Manufacturing Raw Material Oil> The mixing of fluid catalytic cracking residue and catalytic cracking diesel fuel may be carried out by tank blending or line blending. Tank blending is a mixing method in which the fluid catalytic cracking residue and catalytic cracking diesel fuel, which are raw material oils, in a tank (storage tank) are mixed for several hours, for example, using an agitator such as a jet mixer or propeller mixer, to adjust the various properties of the resulting mixed oil. Line blending is a mixing method in which the fluid catalytic cracking residue and catalytic cracking diesel fuel, which are multiple types of raw material oils, are mixed in a turbulent flow within a line (transport pipe) to adjust the various properties of the resulting mixed oil. Tank blending or line blending may be carried out, for example, at a crude oil storage base or refinery. Note that the mixing method used in the method for manufacturing raw material oil in this embodiment is not limited to tank blending or line blending. Furthermore, tank blending may also be carried out by ship's hold blending. Ship hold blending is a type of tank blending described above, and refers to the blending of raw material oils, including fluid catalytic cracking residue and catalytic cracking diesel fuel, within the ship's hold (tank) during transport. Ship hold blending eliminates the need to own separate tanks for blending and allows for efficient mixing.

[0040] <Method for Manufacturing Carbon Black> Carbon black can be manufactured, for example, by using a reaction apparatus equipped with a combustion gas generation section, a reaction section, and a reaction termination section in that order. Specifically, it can be manufactured by a method (furnace method) in which a high-temperature combustion gas is generated by the combustion of fuel hydrocarbons in the combustion gas generation section, then in the reaction section, the raw material oil is sprayed into the high-temperature combustion gas flow from a raw material introduction device to obtain a reaction gas flow containing carbon black converted from the raw material oil by incomplete combustion or thermal decomposition reaction, and then in the reaction termination section, the reaction gas flow is cooled to the reaction termination temperature by introducing a rapid coolant to terminate the reaction.

[0041] Carbon black can be used as a reinforcing material for rubber products such as tires, belts, rubber sheets, cushioning materials, fenders, and machine parts; as a paint, printing ink, India ink, and coloring pigment; for coloring purposes by dispersing it in liquids or directly mixing it with plastics; as a toner for electrostatic copiers; as a coating material for electric wires; as a conductivity enhancer; as an additive to magnetic recording media; as an additive to cosmetics such as mascara and eyeliner; and as a food coloring agent.

[0042] <Mechanism of Action> As shown in the comparative examples described later, when only fluid catalytic cracking residue is used as a raw material, there is a problem of high kinematic viscosity. When only catalytic cracking diesel is used as a raw material, there is a problem of low density and BMCI. Therefore, it is difficult to use fluid catalytic cracking residue or catalytic cracking diesel alone as raw material for carbon black. On the other hand, the inventors of this application have found that by using a mixed oil of fluid catalytic cracking residue and catalytic cracking diesel, the shortcomings of each (the problems mentioned above) can be compensated for. Note that while sulfur content, nitrogen content, etc., are weighted averages in the mixed oil, kinematic viscosity, asphaltene content, BMCI, etc., are properties that do not necessarily become weighted averages, making it difficult to predict that the mixed oil will have the desired properties. Furthermore, in this invention, two or more types of heavy oil are always used, which contributes to the effective utilization of heavy oil.

[0043] The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

[0044] <Analysis of Properties> (Density) The density at 15°C was measured in accordance with JIS K 2249-1:2011 "Crude oil and petroleum products - Method for determining density - Part 1: Vibration method".

[0045] (BMCI) BMCI was calculated from the mean boiling point T (°C) and the specific gravity S compared to water at 60°F using the following formula. S is the density of the oil being measured at 60°F relative to the density of water at 60°F. BMCI = 48640 / (T + 273) + 473.7S - 456.8

[0046] (Kinematic viscosity) The kinematic viscosity at 100°C was measured in accordance with JIS K 2283:2000 "Crude oil and petroleum products - Test method for kinematic viscosity and method for calculating viscosity index".

[0047] (Asphaltene content) The asphaltene content was measured in accordance with JPI-5S-22-83 "Compositional analysis of asphalt by column chromatography".

[0048] (Sulfur content) The sulfur content was measured in accordance with JIS K 2541-4:2003 "Crude oil and petroleum products - Test methods for sulfur content, Part 4: Radiation excitation method".

[0049] (Nitrogen content) The nitrogen content was measured in accordance with JIS K 2609:2022 "Crude oil and petroleum products - Chemiluminescence method for testing nitrogen content".

[0050] (Ash content) The ash content was measured in accordance with JIS K2272:1998 "Crude oil and petroleum products - Test methods for ash content and sulfated ash content".

[0051] <Raw Materials> The following materials were used: liquid catalytic cracking residue and catalytic cracking diesel fuel with the properties described in Table 1.

[0052]

[0053] [Example 1] A feedstock oil was prepared by mixing fluid catalytic cracking residue and catalytic cracking diesel fuel. The fluid catalytic cracking residue was 95% by volume and the catalytic cracking diesel fuel was 5% by volume. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, and ash content of the obtained feedstock oil were measured using the method described above. The results are shown in Table 2.

[0054] [Examples 2-5] Raw material oil was prepared in the same manner as in Example 1, except that the fluid catalytic cracking residue and catalytic cracking diesel oil were mixed in the proportions shown in Table 2. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, and ash content of the obtained raw material oil were measured using the method described above. The results are shown in Table 2.

[0055] [Comparative Example 1] Only the residue from fluid catalytic cracking was used as the raw material. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, and ash content of the raw material were measured using the method described above. The results are shown in Table 2.

[0056] [Comparative Example 2] Catalytic cracked diesel fuel was used as the raw material. The density at 15°C, BMCI, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, and ash content of the raw material were measured using the method described above. The results are shown in Table 2.

[0057] [Comparative Examples 3 and 4] Raw material oils were prepared in the same manner as in Example 1, except that the fluid catalytic cracking residue and catalytic cracking diesel oil were mixed in the proportions shown in Table 2. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, and ash content of the raw material oils were measured using the method described above. The results are shown in Table 2.

[0058]

[0059] In Comparative Example 1, which used only fluid catalytic cracking residue as a raw material, the kinematic viscosity was high, making it difficult to transport the oil through piping and resulting in poor carbon black production efficiency. Furthermore, the high sulfur content made it difficult to meet SOx concentration and total amount regulations in the manufacturing equipment. In Comparative Example 2, which used only catalytic cracking diesel as a raw material, the density was low, resulting in a low carbon black yield. Additionally, the low BMCI resulted in a sharper particle size distribution of carbon black, negatively impacting its low heat generation properties. On the other hand, in Examples 1 to 5, which included both fluid catalytic cracking residue and catalytic cracking diesel (volume ratio of fluid catalytic cracking residue to catalytic cracking diesel = 75:25 to 95:5), the density, BMCI, kinematic viscosity, and impurity content were within appropriate ranges. It was found that the catalytic cracking diesel compensated for the high kinematic viscosity and sulfur content of the fluid catalytic cracking residue, while the fluid catalytic cracking residue compensated for the low density and BMCI of the catalytic cracking diesel. In addition, in Comparative Example 3, where the volume ratio of fluid catalytic cracking residue to catalytic cracking diesel fuel was 50:50, and in Comparative Example 4, where the volume ratio of fluid catalytic cracking residue to catalytic cracking diesel fuel was 25:75, the density and BMCI were lower.

[0060] The carbon black raw material oil of the present invention is useful because it uses surplus heavy oils such as residual fluid catalytic cracking oil and catalytic cracking light oil.

Claims

1. A raw material oil for carbon black comprising catalytic cracking diesel fuel and fluid catalytic cracking residue, wherein the density of the raw material oil for carbon black at 15°C is 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C is 18 mm². ２ A raw material oil for carbon black, having a pH of 0.2 / s or less, a sulfur content of 1.15% by mass or less, and a BMCI of 95 to 150.

2. The carbon black raw material oil according to claim 1, wherein the total content of catalytic cracking diesel fuel and fluid catalytic cracking residue relative to the total volume of the carbon black raw material oil is 80% by volume or more.

3. Carbon black produced from the raw material oil for carbon black according to claim 1 or 2.

4. A fluid catalytic cracking residue for producing a raw material oil for carbon black by mixing it with catalytic cracking diesel fuel, wherein the density of the raw material oil for carbon black at 15°C is 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C is 18 mm². ２ Fluid catalytic cracking residue having a coefficient of 1 / s or less, a sulfur content of 1.15% by mass or less, and a BMCI of 95 to 150.

5. Catalytic cracking light oil for producing raw material oil for carbon black by mixing with residual fluid catalytic cracking oil, wherein the density of the raw material oil for carbon black at 15°C is 1.00 to 1.40 g / cm³. ３ The kinematic viscosity at 100°C is 18 mm². ２ Catalytic cracking diesel fuel having a viscosity of 0.5 / s or less, a sulfur content of 1.15% by mass or less, and a BMCI of 95 to 150.

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