Fluid catalytic cracking residue, ethylene bottom oil, catalytic reforming residue, feedstock oil for carbon black, and carbon black

Abstract

To provide a raw material oil for carbon black that enables the effective utilization of heavy oil, including liquid catalytic cracking residue, ethylene bottom oil, and catalytic reforming residue, a raw material oil for carbon black containing the liquid catalytic cracking residue and the ethylene bottom oil and / or catalytic reforming residue, and carbon black produced from the raw material oil for carbon black. [Solution] A raw material oil for carbon black comprising either or both of ethylene bottom oil and catalytic reforming residue, 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 17 mm³. 2 A raw material oil for carbon black, having a viscosity of 0.2 / s or less and an asphaltene content of 8.5% by mass or less.

Description

[Technical Field]

[0001] The present invention relates to fluid catalytic cracking residue, ethylene bottom oil, catalytic reforming residue, raw material oil for carbon black, and carbon black. [Background technology]

[0002] Due to the decrease in demand for heavy oil, the effective utilization of surplus heavy oil is being considered. Examples of heavy oil include atmospheric distillation residue obtained by processing crude oil in an atmospheric distillation unit, vacuum distillation residue obtained by processing the atmospheric distillation residue in a vacuum distillation unit, fluid catalytic cracking residue obtained by fluid catalytic cracking reaction, ethylene bottom oil produced as a by-product of ethylene crackers using naphtha as a raw material, and catalytic reforming residue produced as a by-product of catalytic reforming using naphtha as a raw material.

[0003] As part of efforts to effectively utilize heavy oils, the production of carbon materials using heavy oils is being considered. Traditionally, coal residues have been used in the production of carbon materials. Carbon materials have specific properties depending on their type, and these properties are derived from the properties of the raw material oil. For example, in the case of carbon black, raw material oil with appropriate density, kinematic viscosity, and asphaltene content is required for product quality and efficient production.

[0004] Patent Document 1 discloses a method for producing raw material oil for carbon black, characterized by mixing 100 parts by mass of a coal tar residue oil-containing liquid having a viscosity of 300 mPa·s or less at 70°C with 10 to 50 parts by mass of one or more selected from heavy oil A, heavy oil C, and FCC residue oil to produce a mixed oil, and then removing the aggregates formed in the mixed oil by centrifugation to produce a raw material oil for carbon black having a quinoline insoluble content of 0.5 to 2% by mass. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 5988127 [Overview of the project] [Problems that the invention aims to solve]

[0006] The method for producing raw material oil for carbon black described in Patent Document 1 requires the use of coal tar residue oil derived from coal. From the perspective of further flexible utilization of heavy oil derived from crude oil, it is necessary to produce carbon materials using raw material oils that are a combination of heavy oils derived from crude oil. The present invention has been made in view of the above circumstances, and aims to provide a fluid catalytic cracking residue, ethylene bottom oil, and catalytic reforming residue used as a raw material oil for carbon black, which enable the effective utilization of heavy oil. Another objective is to provide a raw material oil for carbon black containing the fluid catalytic cracking residue and either or both of the ethylene bottom oil and the catalytic reforming residue, as well as carbon black produced from the raw material oil for carbon black. [Means for solving the problem]

[0007] To solve the above problems, the present invention has the following embodiments. [1] A fluid catalytic cracking residue for producing a raw material oil for carbon black by mixing it with either or both of ethylene bottom oil and catalytic reforming 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 17 mm³. 2 Fluid catalytic cracking residue with a viscosity of 0.2 / s or less and an asphaltene content of 8.5% by mass or less. [2] Ethylene bottom 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 17 mm³. 2 Ethylene bottom oil having a viscosity of 0.2 / s or less and an asphaltene content of 8.5% by mass or less. [3] A catalytically cracked residue for producing a raw material oil for carbon black by mixing with a fluid catalytic cracking bottom 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 17 mm 2 / s or less and the asphaltene content is 8.5% by mass or less. Catalytically cracked residue. [4] A raw material oil for carbon black containing either one or both of ethylene bottom oil and catalytically cracked residue and fluid catalytic cracking bottom 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 17 mm 2 / s or less and the asphaltene content is 8.5% by mass or less. Raw material oil for carbon black. [5] The total content of ethylene bottom oil, catalytically cracked residue, and fluid catalytic cracking bottom oil in the raw material oil for carbon black is 80% by volume or more. The raw material oil for carbon black according to [4]. [6] Carbon black produced from the raw material oil for carbon black according to [4] or [5]. [Advantages of the Invention]

[0008] According to the present invention, it is possible to provide a fluid catalytic cracking bottom oil, an ethylene bottom oil, and a catalytically cracked residue used as a raw material oil for carbon black that enables effective utilization of heavy oil. In addition, it is possible to provide a raw material oil for carbon black containing the fluid catalytic cracking bottom oil and either one or both of the ethylene bottom oil and the catalytically cracked residue, and carbon black produced from the raw material oil for carbon black. [Embodiments for Carrying Out the Invention]

[0009] Hereinafter, embodiments of the present invention will be described in detail. However, the following description is an example of an embodiment of the present invention, and the present invention is not limited to these contents and can be implemented with modifications within the scope of the gist.

[0010] [Definition] The definitions of terms used herein are as follows: Fluid catalytic cracking residue is the residue obtained when the cracked oil, which is produced by contacting raw oil with a fluid catalytic cracking catalyst in a fluid catalytic cracking unit, is distilled. Examples of the raw oil include atmospheric distillation residue, vacuum distillation residue, and vacuum distilled light oil obtained by processing atmospheric distillation residue in a vacuum distillation unit. In other words, the fluid catalytic cracking unit also includes a residue fluid catalytic cracking unit. Ethylene bottom oil is the residual oil produced as a by-product of ethylene crackers that use naphtha as a raw material. Catalytic reforming residue is the residue produced as a by-product in catalytic reforming using naphtha as a raw material.

[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 average 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 - Test method for kinematic viscosity and method for 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 2609:1998 "Crude oil and petroleum products - Test method for nitrogen content". Ash content can be measured in accordance with JIS K2272:1998 "Crude oil and petroleum products - Test methods for ash content and sulfated ash content". The quinoline-insoluble content can be measured in accordance with JIS K 2425:2006 "Test Methods for Creosote Oil, Process Tar and Tar Pitch". In this specification, the lower limit and upper limit of the parameter of the properties of the oil can be arbitrarily combined.

[0012] ≪Fluid Catalytic Cracking Residue≫ The fluid catalytic cracking residue of this embodiment is a fluid catalytic cracking residue for producing a raw material oil for carbon black by mixing with either one or both of ethylene bottoms oil and catalytic reforming residue. By mixing the fluid catalytic cracking residue with either one or both of ethylene bottoms oil and catalytic reforming residue, the density of the raw material oil for carbon black at 15 °C can be adjusted to 1.00 - 1.40 g / cm 3 , the kinematic viscosity at 100 °C can be adjusted to 17 mm 2 / s or less, and the asphaltene content can be adjusted to 8.5 mass% or less.

[0013] The density of the fluid catalytic cracking residue at 15 °C is preferably 0.96 - 1.40 g / cm 3 , more preferably 1.00 - 1.40 g / cm 3 , and even more preferably 1.07 - 1.40 g / cm 3 . When the density of the fluid catalytic cracking residue at 15 °C is within the above range, it becomes easier to adjust the density of the raw material oil for carbon black described below.

[0014] The BMCI of the fluid catalytic cracking residue is preferably 85 - 150, more preferably 100 - 150, and even more preferably 120 - 140. When the BMCI of the fluid catalytic cracking residue is within the above range, it becomes easier to adjust the BMCI of the raw material oil for carbon black described below.

[0015] The kinematic viscosity of the fluid catalytic cracking residue at 100 °C is preferably 50 mm 2 / s or less, more preferably 30 mm 2 / s or less, and even more preferably 20 mm 2It is even more preferable that the kinematic viscosity is less than or equal to / s. A lower limit of kinematic viscosity is, for example, 18 mm. 2 / s is one example. If the kinematic viscosity of the fluid catalytic cracking residue at 100°C is below the aforementioned upper limit, it becomes easier to adjust it to the kinematic viscosity of the carbon black raw material oil at 100°C, as described later. Because 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 either or both of ethylene bottom oil and catalytic reforming residue.

[0016] The asphaltene content of the fluid catalytic cracking residue is preferably 2.5% by mass or less, more preferably 2.0% by mass or less, and even more preferably 1.5% by mass or less. For example, the lower limit of the asphaltene content is 0.1% by mass. If the asphaltene content of the fluid catalytic cracking residue is below the aforementioned upper limit, it becomes easier to adjust it to the asphaltene content of the carbon black raw material oil 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 1.10% 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 0.9% by mass. If the sulfur content of the fluid catalytic cracking residue is below the aforementioned upper limit, it becomes easier to adjust it to the sulfur content of the carbon black raw material oil described later. Because the sulfur content of the fluid catalytic cracking residue is high, it may be difficult to use it as is as a raw material oil for carbon black. In the present invention, the sulfur content can be adjusted by mixing it with either or both of ethylene bottom oil and catalytic reforming residue.

[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 is 0.01% by mass. If the nitrogen content of the fluid catalytic cracking residue is below the aforementioned upper limit, it becomes easier to adjust it to the nitrogen content of the raw material oil for carbon black, as 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. If the ash content of the fluid catalytic cracking residue is below the aforementioned upper limit, it becomes easier to adjust it to the ash content of the raw material oil for carbon black, as described later.

[0020] The quinoline-insoluble content of the fluid catalytic cracking residue is preferably less than 0.3% by mass, more preferably 0.2% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the quinoline-insoluble content is not particularly limited, but for example, it is 0.01% by mass. If the quinoline-insoluble content of the fluid catalytic cracking residue is below the aforementioned upper limit, it becomes easier to adjust it to the quinoline-insoluble content of the raw material oil for carbon black, as described later.

[0021] <<Ethylene bottom oil, catalytic reforming residue>> The ethylene bottom oil or catalytic reforming residue of this embodiment is an ethylene bottom oil or catalytic reforming residue for producing raw material oil for carbon black by mixing it with fluid catalytic cracking residue. By mixing the ethylene bottom oil or catalytic reforming residue 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 17 mm 2 The asphaltene content can be adjusted to 8.5% by mass or less, or to a minimum of / s.

[0022] The density of ethylene bottom oil at 15°C is 0.90–1.40 g / cm³. 3Preferably, it is 0.91 to 1.30 g / cm³. 3 It is more preferable that the concentration be 0.92 to 1.20 g / cm³. 3 It is even more preferable that this be the case. If the density of the ethylene bottom oil 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, as described later.

[0023] The BMCI of ethylene bottom oil is preferably 85 to 150, more preferably 100 to 150, and even more preferably 120 to 140. If the BMCI of the ethylene bottom oil is within the aforementioned range, it becomes easier to adjust it to the BMCI of the carbon black feedstock oil described later.

[0024] The kinematic viscosity of ethylene bottom oil at 100°C is 20 mm². 2 It is preferable that the value be less than or equal to / s, and 10 mm 2 It is more preferable that it be less than or equal to / s, and 6 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, 1 mm². 2 / s is one example. If the kinematic viscosity of the ethylene bottom oil at 100°C is below the aforementioned upper limit, it becomes easier to adjust it to the kinematic viscosity of the carbon black raw material oil at 100°C, as described later.

[0025] The asphaltene content of the ethylene bottom oil is preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 10% by mass or less. For example, a lower limit for the asphaltene content is 8.6% by mass. If the asphaltene content of ethylene bottom oil is below the aforementioned upper limit, it becomes easier to adjust it to the asphaltene content of the carbon black raw material oil described later. Since the asphaltene content of ethylene bottom oil is high, it is difficult to use it as a raw material oil for carbon black as is. In the present invention, the asphaltene content can be adjusted by mixing it with fluid catalytic cracking residue.

[0026] The sulfur content of the ethylene bottom oil is preferably 0.50% by mass or less, more preferably 0.30% by mass or less, and even more preferably 0.10% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it is 0.01% by mass. If the sulfur content of the ethylene bottom oil is below the aforementioned upper limit, it becomes easier to adjust it to the sulfur content of the raw material oil for carbon black, as described later.

[0027] The nitrogen content of the ethylene bottom oil is preferably 0.03% by mass or less, more preferably 0.02% by mass or less, and even more preferably 0.01% by mass or less. The lower limit of the nitrogen content is not particularly limited, but for example, it is 0.001% by mass. If the nitrogen content of the ethylene bottom oil is below the aforementioned upper limit, it becomes easier to adjust it to the nitrogen content of the raw material oil for carbon black, as described later.

[0028] The ash content of ethylene bottom oil 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 0.001% by mass. If the ash content of the ethylene bottom oil is below the aforementioned upper limit, it becomes easier to adjust it to the ash content of the raw material oil for carbon black, as described later.

[0029] The quinoline-insoluble content of ethylene bottom oil is preferably less than 0.3% by mass, more preferably 0.2% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the quinoline-insoluble content is not particularly limited, but for example, it is 0.01% by mass. If the quinoline-insoluble content of the ethylene bottom oil is below the aforementioned upper limit, it becomes easier to adjust it to the quinoline-insoluble content of the raw material oil for carbon black, as described later.

[0030] The density of catalytic reforming residue at 15°C is 0.90–0.99 g / cm³. 3 Preferably, it is 0.91-0.98 g / cm³. 3 It is more preferable that the value be 0.92-0.97 g / cm³.3 It is even more preferable that this be the case. If the density of the catalytic reforming residue at 15°C is within the aforementioned range, it becomes easier to adjust it to the density of the carbon black feedstock oil described later. Because the density of the catalytic reforming residue at 15°C is low, it is difficult to use it as is as a feedstock oil for carbon black. In this invention, the density at 15°C can be adjusted by mixing it with the fluid catalytic cracking residue.

[0031] The BMCI of the catalytic reforming residue is preferably 85 to 150, more preferably 100 to 150, and even more preferably 120 to 140. If the BMCI of the catalytic reforming residue is within the aforementioned range, it becomes easier to adjust it to the BMCI of the carbon black feedstock oil described later.

[0032] The kinematic viscosity of the catalytic reforming residue at 100°C is 20 mm². 2 It is preferable that the value be less than or equal to / s, and 10 mm 2 It is more preferable that it be less than or equal to / s, and 6 mm 2 It is even more preferable that it be less than or equal to / s, and 3 mm 2 It is particularly preferable that the kinematic viscosity is less than or equal to / s. A lower limit of 0.1 mm² is used for kinematic viscosity. 2 / s is one example. If the kinematic viscosity of the catalytic reforming residue at 100°C is below the aforementioned upper limit, it becomes easier to adjust it to the kinematic viscosity of the carbon black raw material oil at 100°C, as described later.

[0033] The asphaltene content of the catalytic reforming residue 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. An example of the lower limit of the asphaltene content is 0.001% by mass. If the asphaltene content of the catalytic reforming residue is below the aforementioned upper limit, it becomes easier to adjust it to the asphaltene content of the carbon black feedstock oil described later.

[0034] The sulfur content of the catalytic reforming residue is preferably 0.50% by mass or less, more preferably 0.30% by mass or less, and even more preferably 0.10% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it is 0.001% by mass. If the sulfur content of the catalytic reforming residue is below the aforementioned upper limit, it becomes easier to adjust it to the sulfur content of the raw material oil for carbon black, as described later.

[0035] The nitrogen content of the catalytic reforming residue is preferably 0.03% by mass or less, more preferably 0.02% by mass or less, and even more preferably 0.01% by mass or less. The lower limit of the nitrogen content is not particularly limited, but for example, it is 0.001% by mass. If the nitrogen content of the catalytic reforming residue is below the aforementioned upper limit, it becomes easier to adjust it to the nitrogen content of the raw material oil for carbon black, as described later.

[0036] The ash content of the catalytic reforming residue 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 0.001% by mass. If the ash content of the catalytic reforming residue is below the aforementioned upper limit, it becomes easier to adjust it to the ash content of the raw material oil for carbon black, as described later.

[0037] The quinoline-insoluble content of the catalytic reforming residue is preferably less than 0.3% by mass, more preferably 0.2% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the quinoline-insoluble content is not particularly limited, but for example, it is 0.01% by mass. If the quinoline-insoluble content of the catalytic reforming residue is below the aforementioned upper limit, it becomes easier to adjust it to the quinoline-insoluble content of the carbon black feedstock oil described later.

[0038] Furthermore, when specifying "ethylene bottom oil and catalytic reforming residue," the lower and upper limits of the properties of the ethylene bottom oil and the lower and upper limits of the properties of the catalytic cracking oil may be used. In addition, the lower limit of the properties of the ethylene bottom oil and the upper limit of the properties of the catalytic cracking oil may be combined and used as a range. Moreover, the upper limit of the properties of the ethylene bottom oil and the lower limit of the properties of the catalytic cracking oil may be combined and used as a range.

[0039] ≪Raw material oil for carbon black≫ The raw material oil for carbon black in this embodiment (hereinafter also simply referred to as "raw material oil") includes either or both of ethylene bottom oil and catalytic reforming residue, and fluid catalytic cracking residue. The density of the raw material oil at 15°C is 1.00 to 1.40 g / cm³. 3 The kinematic viscosity at 100°C is 17 mm³. 2 The saturates are less than or equal to / s, and the asphaltene content is 8.5% by mass or less.

[0040] The raw material oil comprises either or both of ethylene bottom oil and catalytic reforming residue, and fluid catalytic cracking residue. The total content of ethylene bottom oil, catalytic reforming residue, 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 ethylene bottom oil, catalytic reforming residue, and fluid catalytic cracking residue relative to the total volume of the raw material oil may be 100% by volume.

[0041] The raw material oil may include ethylene bottom oil, catalytic reforming residue, and fluid catalytic cracking residue, as well as heavy extracts, which are particularly heavy oils extracted and removed by solvent extraction of lubricating oil base oils such as atmospheric distillation residue, vacuum distillation residue, vacuum distilled light oil, and hydrocracked heavy oil, as well as pyrolysis heavy oil, pyrolysis light oil, defatted 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.

[0042] The volume ratio of the total content of ethylene bottom oil and catalytic reforming residue to the content of fluid catalytic cracking residue is preferably 0.1 to 10, more preferably 0.1 to 5, and even more preferably 0.1 to 3. When the volume ratio is within the above range, it is easier to satisfy the properties of the raw material oil described later.

[0043] The volume ratio of ethylene bottom oil to the fluid catalytic cracking residue is preferably 0.1 to 15, more preferably 0.1 to 13, and even more preferably 0.1 to 10. When the volume ratio is within the above range, it is easier to satisfy the properties of the raw material oil described later.

[0044] The volume ratio of catalytic reforming residue to fluid catalytic cracking residue is preferably 0.01 to 10, more preferably 0.05 to 5, and even more preferably 0.1 to 1. When the volume ratio is within the above range, the properties of the raw material oil described later are more likely to be met.

[0045] When the raw material oil contains both ethylene bottom oil and catalytic reforming residue, the volume ratio of the catalytic reforming residue to the ethylene bottom oil content is more preferably 0.01 to 10, and even more preferably 0.1 to 5. When the volume ratio is within the above range, the properties of the raw material oil described later are more likely to be met.

[0046] The density of the raw material oil at 15°C is 1.00 to 1.40 g / cm³. 3 The concentration is 1.03-1.30 g / cm³. 3 Preferably, it is 1.07 to 1.30 g / cm³. 3 It is preferable that it be so. When the density is above the aforementioned lower limit, the yield of carbon black tends to improve.

[0047] The BMCI of the raw material oil is preferably 95 to 150, more preferably 100 to 140, and even more preferably 120 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 its low heat generation properties.

[0048] The kinematic viscosity of the raw material oil at 100°C is 17 mm². 2 / s or less, 15mm 2 It is preferable that the value be less than or equal to / s, and 12 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, 1.0 mm. 2 / s is one example. When the kinematic viscosity is below the aforementioned upper limit, oil can be easily and efficiently supplied through piping.

[0049] The asphaltene content of the raw material oil is 8.5% by mass or less, preferably 8.0% by mass or less, and more preferably 5.0% by mass or less. An example of the lower limit of the asphaltene content is 0.1% by mass. If the asphaltene content is below the aforementioned upper limit, premature caulking is suppressed, and the generation of coarse particles becomes less likely.

[0050] The sulfur content of the raw material oil is preferably 0.90% by mass or less, more preferably 0.80% by mass or less, and even more preferably 0.70% by mass or less. The lower limit of the sulfur content is not particularly limited, but for example, it is 0.10% by mass. The sulfur content of the raw oil is directly accumulated in the carbon black. Therefore, if the sulfur content is below the aforementioned 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 facility.

[0051] The nitrogen content of the raw material oil is preferably 0.20% by mass or less, more preferably 0.15% by mass or less, and even more preferably 0.10% 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 of the raw oil is directly accumulated in the carbon black. Therefore, if the nitrogen content is below the aforementioned 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.

[0052] 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 0.04% by mass or less. The lower limit of the ash content is not particularly limited, but for example, it is 0.01% by mass. When the ash content is below the aforementioned upper limit, the quality of the carbon black tends to improve, resulting in reduced wear and increased strength.

[0053] The quinoline-insoluble content of the raw material oil is preferably less than 0.3% by mass, more preferably 0.2% by mass or less, and even more preferably 0.1% by mass or less. The lower limit of the quinoline-insoluble content is not particularly limited, but for example, it is 0.01% by mass. If the quinoline-insoluble content is below the aforementioned upper limit, coke grids are less likely to be produced as a by-product during carbon black manufacturing, and the quality of the carbon black tends to improve.

[0054] <Method for manufacturing raw oil> The mixing of fluid catalytic cracking residue with either or both ethylene bottom oil and catalytic reforming residue may be carried out by tank blending or line blending. Tank blending is a mixing method in which fluid catalytic cracking residue in a tank (storage tank) is mixed with raw material oils containing either or both ethylene bottom oil and catalytic reforming residue using a stirring device such as a jet mixer or propeller mixer for, for example, several hours, to adjust the properties of the resulting mixed oil. Line blending is a mixing method in which fluid catalytic cracking residue is mixed with multiple types of raw material oils containing either or both ethylene bottom oil and catalytic reforming residue in a line (transport pipe) by creating turbulence, to adjust the 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 raw material oil production method of this embodiment is not limited to tank blending or line blending. Furthermore, tank blending may also be carried out as cargo hold blending. Cargo hold blending is a type of tank blending described above, meaning that the raw material oils, which include fluid catalytic cracking residue and either or both of ethylene bottom oil and catalytic reforming residue, are blended in the cargo hold (tank) during transport. Cargo hold blending eliminates the need to maintain separate tanks for blending and allows for efficient mixing.

[0055] <Manufacturing method for carbon black> Carbon black can be produced, for example, by using a reactor equipped with a combustion gas generation section, a reaction section, and a reaction termination section in that order. Specifically, it can be produced by a method (furnace process) in which a high-temperature combustion gas is generated in the combustion gas generation section by burning fuel hydrocarbons, 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.

[0056] 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.

[0057] <Mechanism of Action> As shown in the comparative examples described later, using only fluid catalytic cracking residue as a raw material oil presents the problem of high kinematic viscosity. Using only ethylene bottom oil as a raw material oil presents the problem of high asphaltene content. Using only catalytic reforming residue as a raw material oil presents the problem of low density. Therefore, it is difficult to use fluid catalytic cracking residue, ethylene bottom oil, or catalytic reforming residue individually as raw material oils for carbon black. On the other hand, the inventors of this application have found that by mixing fluid catalytic cracking residue with one or both of ethylene bottom oil and catalytic reforming residue, 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, etc., are not necessarily weighted averages. Furthermore, this invention always uses two or more types of heavy oil, contributing to the effective utilization of heavy oil. [Examples]

[0058] 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.

[0059] <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".

[0060] (BMCI) BMCI was calculated using the following formula, based on the average boiling point T (°C) and the specific gravity S compared to water at 60°F. 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

[0061] (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".

[0062] (Asphaltene content) The asphaltene content was measured in accordance with JPI-5S-22-83 "Compositional Analysis of Asphalt by Column Chromatography".

[0063] (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".

[0064] (Nitrogen content) Nitrogen content was measured in accordance with JIS K 2609:1998 "Crude oil and petroleum products - Test methods for nitrogen content".

[0065] (ash) Ash content was measured in accordance with JIS K2272:1998 "Crude oil and petroleum products - Test methods for ash content and sulfated ash content".

[0066] (Quinoline-insoluble content) Quinoline-insoluble content was measured in accordance with JIS K 2425:2006 "Test Methods for Creosote Oil, Processed Tar, and Tar Pitch".

[0067] <Raw materials> The fluid catalytic cracking residue, ethylene bottom oil, and catalytic reforming residue with the properties described in Table 1 were used.

[0068] [Table 1]

[0069] [Example 1] A feedstock oil was prepared by mixing fluid catalytic cracking residue and ethylene bottom oil. The feedstock oil consisted of 90% fluid catalytic cracking residue and 10% ethylene bottom oil by volume. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, ash content, and quinoline insoluble content of the obtained feedstock oil were measured using the method described above. The results are shown in Table 2.

[0070] [Examples 2-5] The raw material oil was prepared in the same manner as in Example 1, except that the fluid catalytic cracking residue and ethylene bottom 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, ash content, and quinoline insoluble content of the obtained raw material oil were measured using the method described above. The results are shown in Table 2.

[0071] [Examples 6-7] The raw material oil was prepared in the same manner as in Example 1, except that the fluid catalytic cracking residue and catalytic reforming residue 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, ash content, and quinoline-insoluble content of the obtained raw material oil were measured using the method described above. The results are shown in Table 2.

[0072] [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, ash content, and quinoline-insoluble content of the raw material were measured using the method described above. The results are shown in Table 2.

[0073] [Comparative Example 2] Only ethylene bottom oil was used as the raw material. The density, BMCI at 15°C, kinematic viscosity at 100°C, asphaltene content, sulfur content, nitrogen content, ash content, and quinoline-insoluble content of the raw material oil were measured using the method described above. The results are shown in Table 2.

[0074] [Comparative Example 3] Only the residual oil from catalytic reforming was used as the raw material. The density, aromaticity index, kinematic viscosity, asphaltene content, sulfur content, nitrogen content, ash content, and quinoline-insoluble content of the raw material oil at 15°C, as measured by the method described above. The results are shown in Table 2.

[0075] [Table 2]

[0076] 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 ethylene bottom oil as a raw material, the high asphaltene content made premature coking more likely and coarse particles less likely to be generated. In Comparative Example 3, which used only catalytic reforming residue as a raw material, the density was low, resulting in a low carbon black yield. The BMCI was also low, further reducing the carbon black yield. On the other hand, in Examples 1-5, which included both fluid catalytic cracking residue and ethylene bottom oil, the density, BMCI, kinematic viscosity, and impurity content were within appropriate ranges. It was found that the ethylene bottom oil compensated for the high kinematic viscosity and sulfur content of the fluid catalytic cracking residue, and the fluid catalytic cracking residue compensated for the high asphaltene content of the ethylene bottom oil. Furthermore, in Examples 6-7, which included both catalytic cracking residue and catalytic reforming residue, the density, BMCI, kinematic viscosity, and impurity content were within appropriate ranges. It was found that the catalytic reforming residue compensates for the high kinematic viscosity and sulfur content of the fluid catalytic cracking residue, and the fluid catalytic cracking residue compensates for the low density of the catalytic reforming residue. [Industrial applicability]

[0077] The carbon black raw material oil of the present invention is useful because it uses surplus heavy oils such as liquid catalytic cracking residue, ethylene bottom oil, and catalytic reforming residue.

Claims

1. A fluid catalytic cracking residue for producing a feedstock oil for carbon black by mixing it with either or both of ethylene bottom oil and catalytic reforming residue, The density of the aforementioned 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 17 mm². ２ Fluid catalytic cracking residue having a coefficient of 1 / s or less and an asphaltene content of 8.5% by mass or less.

2. Ethylene bottom oil for producing raw material oil for carbon black by mixing with liquid catalytic cracking residue, The density of the aforementioned 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 17 mm². ２ Ethylene bottom oil having a viscosity of 0.5% or less and an asphaltene content of 8.5% by mass or less.

3. A catalytic reforming residue for producing raw material oil for carbon black by mixing it with fluid catalytic cracking residue, The density of the aforementioned 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 17 mm². ２ A catalytic reforming residue having a coefficient of 1 / s or less and an asphaltene content of 8.5% by mass or less.

4. A feedstock oil for carbon black comprising either or both of ethylene bottom oil and catalytic reforming residue, and fluid catalytic cracking residue, The density of the aforementioned 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 17 mm². ２ A raw material oil for carbon black, having a viscosity of 0.2 / s or less and an asphaltene content of 8.5% by mass or less.

5. The carbon black raw material oil according to claim 4, wherein the total content of ethylene bottom oil, catalytic reforming residue, and fluid catalytic cracking residue relative to the total volume of the carbon black raw material oil is 80% by volume or more.

6. Carbon black produced from the raw material oil for carbon black according to claim 4 or 5.

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