CN113646414A - Fuel oil composition - Google Patents

Fuel oil composition Download PDF

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Publication number
CN113646414A
CN113646414A CN202080025651.XA CN202080025651A CN113646414A CN 113646414 A CN113646414 A CN 113646414A CN 202080025651 A CN202080025651 A CN 202080025651A CN 113646414 A CN113646414 A CN 113646414A
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fuel oil
calcium
oil composition
mass
content
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小田切庆一
角太朗
胜野瑛自
花村亮
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Adeka Corp
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Adeka Corp
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Abstract

The invention provides a fuel oil composition, which contains fuel oil base oil with 0.01-0.50 mass% of sulfur element content and calcium salicylate with a total base number of 100-1200 mgKOH/g.

Description

Fuel oil composition
Technical Field
The present invention relates to a fuel oil composition in which precipitation of sludge (slurry) during storage or use is suppressed.
Background
In fuel oils used for internal combustion engines, ships, aircrafts, external combustion engines, and the like, various detergents and sludge dispersants have been developed in order to prevent generation of precipitates and deposits during storage and use (see, for example, patent documents 1 to 3). However, in recent years, in fuel oil, in order to suppress the generation of environmental pollutants such as sulfur oxides at the time of combustion, the limitation of reducing the sulfur content in fuel oil has become widespread, and for example, in fuel oil for ships, it is expected that the limitation of reducing the sulfur content of fuel oil to 0.5% or less is intensified from 2020 onward, and the design and development of fuel oil having a corresponding composition have become an important problem. Although it is effective to reduce the sulfur content of the fuel oil base oil in order to reduce the sulfur content of the fuel oil, it is expected that such a change in the composition of the base oil has a large influence on the generation of precipitates and deposits during storage and use, and the detergent and sludge dispersant used in the past have insufficient detergent and dispersant effects.
Under such circumstances, in recent years, a low-sulfurized heavy oil composition has been developed which can suppress the generation of sludge even if the composition does not contain a sludge dispersant (see patent document 4). However, since the composition of the fuel oil composition is limited, there is a demand in the market for a fuel oil composition that can effectively suppress precipitation of sludge under various blending conditions, storage conditions, and use conditions.
Documents of the prior art
Patent document
Patent document 1: japanese examined patent publication No. 48-38761
Patent document 2: japanese patent laid-open publication No. 53-65306
Patent document 3: japanese laid-open patent publication No. 5-331470
Patent document 4: japanese patent laid-open publication No. 2012-92253
Disclosure of Invention
Problems to be solved by the invention
Accordingly, an object of the present invention is to provide a fuel oil composition which can effectively suppress precipitation of sludge during storage and use.
Means for solving the problems
The present inventors have conducted extensive studies to solve the above problems, and as a result, have found that a fuel oil composition containing a specific fuel oil base oil and a specific sludge dispersant is excellent in suppressing precipitation of sludge during storage and use. That is, the present invention is a fuel oil composition comprising a fuel oil base oil having a sulfur element content of 0.01 to 0.50 mass% and calcium salicylate having a total base number of 100 to 1200 mgKOH/g.
Effects of the invention
According to the present invention, a fuel oil composition capable of suppressing precipitation of sludge during storage and use can be provided.
Detailed Description
The fuel oil base oil used in the present invention is a fuel oil base oil having a sulfur element content of 0.01 to 0.50 mass%. The fuel oil base oil is not particularly limited as long as the sulfur element content is 0.01 to 0.50 mass%, and a fuel oil that can be used as a liquid fuel oil may be appropriately selected depending on the purpose and conditions of use. For example, fuel oil obtained by adjusting the sulfur content such as gasoline, light oil, heavy oil, kerosene, and biofuel can be used. Specifically, examples of such fuel oils include: no. 1 light Oil, No. 2 light Oil, No. 3 light Oil, heavy Oil a, heavy Oil B, heavy Oil C, kerosene 1, kerosene 2, MGO (Marine Gas Oil), MDO (Marine Diesel Oil), VLSFO (Very Low Sulfur Fuel Oil), ULSFO (ultra Low Sulfur Fuel Oil), palm Oil, coconut Oil, rapeseed Oil, soybean Oil, sunflower Oil, corn Oil, sesame Oil, tall Oil (tall Oil), bone Oil, whale Oil, and the like, and one or more of them may be used. Among these, as the light oil or heavy oil, straight-run light oil fraction, vacuum light oil fraction, desulfurized light oil fraction, cracked base oil fraction, straight light oil fraction, atmospheric distillation residual oil, vacuum distillation residual oil, straight heavy oil, cracked heavy oil, and the like can be used. In the present invention, the above-described fuel oil may be used by subjecting it to hydrogenation treatment.
The fuel oil base oil used in the present invention has excellent sludge precipitation inhibition performance when the elemental sulfur content is in the range of 0.01 to 0.50 mass%. The sulfur content of the fuel oil base oil is preferably 0.03 to 0.48 mass%, more preferably 0.10 to 0.45 mass%, from the viewpoint of various properties of the fuel oil.
The "sulfur content in the fuel oil base oil" means the sulfur content derived from the fuel oil base oil alone, and does not contain the sulfur derived from the additive.
In the present invention, the sulfur content is measured by the ultraviolet fluorescence method described in JIS K2541-6 (2003).
The method for adjusting the sulfur element content of the fuel oil base oil is not particularly limited, and the sulfur element content may be adjusted to 0.01 to 0.50 mass% by a known method. For example, the sulfur element content may be set to 0.01 to 0.50 mass% by subjecting a fuel oil containing more than 0.50 mass% of the sulfur element to direct desulfurization treatment, indirect desulfurization treatment, or the like. Further, the fuel oil containing more than 0.50 mass% of the elemental sulfur and the fuel oil containing less than 0.50 mass% of the elemental sulfur may be mixed so that the elemental sulfur content is adjusted to 0.01 to 0.50 mass% of the fuel oil base oil.
From the viewpoint of the effect of the present invention, the kinematic viscosity at 40 ℃ of the fuel oil base oil used in the present invention is preferably 1 to 600mm2(ii) s, more preferably 2 to 500mm2More preferably 2 to 400 mm/s2More preferably 2 to 250mm in terms of the total mass of the particles2And s. In the present invention, the kinematic viscosity is measured by the method described in JIS K2283 (2000).
In the present invention, from the viewpoint of the effect of the present invention, it is preferable to use a fuel oil base oil containing at least one selected from light oils (including extra-1 light oil, No. 2 light oil, No. 3 light oil, extra-3 light oil, and MGO) and heavy oils (including a heavy oil, B heavy oil, C heavy oil, MDO, VLSFO, and ULSFO). In this case, the total content of the light oil and the heavy oil in the fuel oil base oil is not particularly limited, but from the viewpoint of the effect of the present invention, the total amount of the light oil and the heavy oil is preferably 10 to 100% by mass, more preferably 40 to 100% by mass, and still more preferably 80 to 100% by mass, based on the total amount of the fuel oil base oil. In such a fuel oil base oil, the content ratio of the light oil to the heavy oil is preferably 0: 100 to 90: 10 in terms of mass ratio. Further, from the viewpoint of the effect of the present invention, it is particularly preferable to use, as the fuel oil base oil, a fuel oil base oil containing at least one selected from MGO and heavy oil. In this case, the total content of MGO and heavy oil in the fuel oil composition is not particularly limited, but from the viewpoint of the effect of the present invention, the total amount of MGO and heavy oil is preferably 10 to 100 mass%, more preferably 40 to 100 mass%, even more preferably 80 to 100 mass%, and particularly preferably 100 mass% with respect to the total amount of the fuel oil base oil. In the fuel oil base oil, the content ratio of MGO to the heavy oil is not particularly limited when the total amount of MGO and heavy oil is 100 mass%, and for example, the content ratio of MGO to the heavy oil may be 0: 100 to 100: 0, preferably 0: 100 to 90: 10, in terms of mass ratio.
The calcium salicylate used in the invention is calcium salicylate with a total base number of 100-1200 mgKOH/g. In the present invention, the total base number refers to a value measured according to ASTM D2896. From the viewpoint of the effect of the present invention, the total base number of calcium salicylate is preferably 200 to 1000mgKOH/g, more preferably 300 to 900, and still more preferably 370 to 800.
The "calcium salicylate having a total base number of 100 to 1200 mgKOH/g" means that the total base number of calcium salicylate itself is 100 to 1200mgKOH/g, and when two or more calcium salicylates are used in the fuel oil composition of the present invention, the total base number means the total base number of a mixture of calcium salicylates.
Therefore, as described later, when the calcium salicylate is diluted with the fuel oil base oil before being added to the fuel oil, the desired effect is exhibited even if the total base number of the dilution is a value of less than 100 mgKOH/g.
The calcium salicylate used in the present invention may be commercially available or prepared by a known method, and examples thereof include calcium salicylate obtained by the following method: a method comprising alkylating phenol with an olefin having 4 to 32 carbon atoms to obtain alkylphenol, reacting the alkylphenol with an alkali metal hydroxide to produce an alkylbenzene oxide, reacting the alkylbenzene oxide with carbon dioxide to effect carboxylation, and then reacting the alkylphenol oxide with a calcium compound; a method in which salicylic acid is reacted with an olefin having 4 to 32 carbon atoms with an alkylating agent to produce alkyl salicylic acid, and then the alkyl salicylic acid is reacted with a calcium compound. Furthermore, calcium salicylate described in British patent No. 734598, Japanese patent laid-open publication No. Sho 60-101196, Japanese patent laid-open publication No. Hei 05-163496, Japanese patent laid-open publication No. Hei 07-258675, and the like can also be used.
Specifically, the calcium salicylate used in the present invention may be, for example, a calcium salt of an alkylsalicylic acid represented by the following general formula (1) or general formula (2).
Figure BDA0003284399250000051
R of the general formula (1)1Represents a hydrocarbon group having 4 to 32 carbon atoms. Examples of such a group include a linear alkyl group having 4 to 32 carbon atoms, a branched alkyl group having 4 to 32 carbon atoms, a linear alkenyl group having 4 to 32 carbon atoms, a branched alkenyl group having 4 to 32 carbon atoms, an alicyclic hydrocarbon group having 4 to 32 carbon atoms, and an aromatic hydrocarbon group having 6 to 32 carbon atoms. Among them, R is considered from the viewpoint of the effect of the present invention1Preferably a hydrocarbon group having 6 to 30 carbon atoms, more preferably a hydrocarbon group having 12 to 28 carbon atoms.
R of the general formula (2)2Represents a hydrocarbon group having 4 to 32 carbon atoms. Examples of such a group include a linear alkyl group having 4 to 32 carbon atoms, a branched alkyl group having 4 to 32 carbon atoms, a linear alkenyl group having 4 to 32 carbon atoms, a branched alkenyl group having 4 to 32 carbon atoms, an alicyclic hydrocarbon group having 4 to 32 carbon atoms, and an aromatic hydrocarbon group having 6 to 32 carbon atoms. Among them, R is considered from the viewpoint of the effect of the present invention2Preferably a hydrocarbon group having 6 to 30 carbon atoms, more preferably a hydrocarbon group having 12 to 28 carbon atoms.
The calcium salicylate used in the present invention may be one or two or more calcium salts of alkyl salicylic acid represented by the above general formula (1), one or two or more calcium salts of alkyl salicylic acid represented by the general formula (2), or one or two or more calcium salts of alkyl salicylic acid represented by the general formula (1) and one or two or more calcium salts of alkyl salicylic acid represented by the general formula (2) may be used in combination. In the present invention, for example, calcium salts obtained by treating alkyl salicylic acids represented by general formulae (1) and (2) with a calcium compound such as calcium hydroxide, calcium carbonate, calcium borate, calcium chloride, or calcium hydrogen carbonate can be used.
From the viewpoint of the effect of the present invention, the calcium salicylate used in the present invention preferably contains at least one of the calcium salts of alkyl salicylic acids represented by the general formula (1) or the general formula (2), and more preferably a mixture of the calcium salt of alkyl salicylic acid represented by the general formula (1) and the calcium salt of alkyl salicylic acid represented by the general formula (2). When the calcium salt of an alkylsalicylic acid represented by the general formula (1) and the calcium salt of an alkylsalicylic acid represented by the general formula (2) are contained, the content ratio of each alkylsalicylic acid is not particularly limited. However, from the viewpoint of the effect of the present invention, the molar ratio of the alkyl salicylic acid represented by the general formula (1) to the alkyl salicylic acid represented by the general formula (2) is preferably 10: 1 to 0.1: 1, more preferably 8.0: 1 to 0.5: 1, still more preferably 5.0: 1 to 1.0: 1, and particularly preferably 4.0: 1 to 1.5: 1.
When the calcium salicylate used in the present invention contains calcium salts of alkyl salicylic acids represented by the general formulae (1) and (2), or is a mixture of the calcium salts, R is1And R2All preferably have 14 to 18 carbon atoms. In another embodiment, R1And R2All preferably have 16 to 18 carbon atoms. In another embodiment, R is1And R2Each preferably has 20 to 28 carbon atoms. In yet another embodiment, R1And R2An alkyl group having 16 carbon atoms is preferable. In yet another embodiment, R1And R2All preferably have 14 to 28 carbon atoms.
The ratio of the metal to calcium salicylate (calcium element content (mol) × 2/alkylsalicylic acid content (mol)) used in the present invention is not particularly limited, but is preferably 0.2 to 10, more preferably 0.5 to 8.0, and still more preferably 1.0 to 5.0, from the viewpoint of the effect of the present invention. The ratio of the metal to the calcium salicylate can be adjusted by adjusting the ratio of the content of the calcium element to the content of the alkylsalicylic acid (adjusting the ratio of the raw material when the alkylsalicylic acid is treated with the calcium compound), for example, the ratio of the metal can be increased by treating the alkylsalicylic acid with an excessive amount of the calcium compound, and the ratio of the metal can be made smaller than 1.0 by decreasing the ratio of the calcium compound.
The ratio of the calcium element to the calcium salicylate used in the present invention is not particularly limited, but may be, for example, 1.0 to 35% by mass, preferably 1.0 to 30% by mass, more preferably 5.0 to 30% by mass, and still more preferably 10 to 28% by mass, from the viewpoint of the effect of the present invention.
From the viewpoint of handling properties, the calcium salicylate used in the present invention may be diluted with a fuel oil base oil before the preparation of the fuel oil composition, and used in the form of a calcium salicylate dilution. In this case, the content of calcium salicylate in the calcium salicylate diluent may be appropriately adjusted according to the purpose, and for example, the content of calcium salicylate may be set to 10 to 99 mass% based on the total amount of the calcium salicylate diluent.
The fuel oil base oil used for diluting the calcium salicylate may be the same as the fuel oil base oil used in the fuel oil composition of the present invention, or may be a different fuel oil base oil.
The total base number of the calcium salicylate diluent usable in the present invention is not particularly limited, and for example, the total base number is preferably 30 to 400mgKOH/g, more preferably 60 to 360mgKOH/g, still more preferably 100 to 300mgKOH/g, and particularly preferably 150 to 260 mgKOH/g.
The ratio of the calcium element to the calcium salicylate in the calcium salicylate diluent usable in the present invention is not particularly limited, but may be, for example, 1.0 to 35 mass%, preferably 1.0 to 30 mass%, more preferably 2.0 to 20 mass%, still more preferably 10 to 28 mass%, still more preferably 5.0 to 12.0 mass%, and particularly preferably 6.0 to 9.0 mass%, from the viewpoint of the effect of the present invention.
In the fuel oil composition of the present invention, the content of calcium salicylate is preferably 0.001 to 5.0% by mass, more preferably 0.005 to 3.0% by mass, and still more preferably 0.01 to 2.0% by mass, based on the total amount of the fuel oil composition, from the viewpoint of the effect of the present invention. In the fuel oil composition of the present invention, the content of calcium salicylate is preferably 1 to 2000 mass ppm, more preferably 5 to 1500 mass ppm, and still more preferably 10 to 1000 mass ppm, in terms of the content of calcium element, relative to the total amount of the fuel oil composition, from the viewpoint of the effect of the present invention.
In the fuel oil composition of the present invention, from the viewpoint of the effect of the present invention, the ratio of the content of sulfur element in the fuel oil base oil to the content of calcium element derived from calcium salicylate is preferably 1000: 1 to 0.5: 1, more preferably 800: 1 to 1: 1, and still more preferably 500: 1 to 2: 1 by mass.
The method for producing the fuel oil composition of the present invention can be produced by mixing a fuel oil base oil having a sulfur element content of 0.01 to 0.50 mass% with calcium salicylate or a diluted calcium salicylate by a known method. For example, it can be produced by adding calcium salicylate or a diluted calcium salicylate to a fuel oil base oil in a single portion or in multiple portions under an environment of room temperature to 100 ℃ and stirring/mixing at room temperature to 150 ℃.
In the present invention, from the viewpoint of more effectively suppressing the precipitation of sludge during storage or use, it is preferable that the sorbitan ester is further contained. The sorbitan ester usable in the present invention is not particularly limited as long as it is a compound in which all or a part of the hydroxyl groups of sorbitol or sorbitan are esterified, and examples thereof include sorbitan monofatty acid esters, sorbitan difatty acid esters, sorbitan trifatty acid esters, sorbitan sesquifatty acid esters, polyoxyalkylene condensed sorbitan fatty acid esters, and the like. Among these, sorbitan esters in which the fatty acid is any of lauric acid, stearic acid, and oleic acid are preferably used from the viewpoint of the effect of the present invention.
The HLB of the sorbitan ester is not particularly limited, and is preferably 1.2 to 12.0, more preferably 1.5 to 11.0, and further preferably 1.8 to 10.0.
The HLB is described in detail in international publication No. 2019/245024 and the like as follows.
HLB (Hydrophilic-Lipophilic Balance) represents the ratio of the molecular weight of the Hydrophilic group portion to the total molecular weight of the surfactant, and is determined by Griffin's formula for nonionic surfactants.
The HLB of a mixed surfactant composed of two or more nonionic surfactants is determined as follows. The HLB of the mixed surfactant is a value obtained by arithmetically averaging the HLB values of the respective nonionic surfactants based on the blending ratio thereof.
Hybrid HLB ═ Sigma (HLBx. Wx)/Sigma Wx
HLBx represents the HLB value of the nonionic surfactant X.
Wx represents the mass (g) of the nonionic surfactant X having a value of HLBx.
The content of sorbitan ester in the case where the fuel oil composition of the present invention contains sorbitan ester is not particularly limited, but from the viewpoint of the effect of the present invention, the content of sorbitan ester is preferably 0.001 to 5.0% by mass, more preferably 0.005 to 3.0% by mass, and still more preferably 0.01 to 2.0% by mass, relative to the total amount of the fuel oil composition.
In addition, when the fuel oil composition of the present invention contains sorbitan ester, the content ratio of the calcium element derived from calcium salicylate to sorbitan ester in the fuel oil composition is not particularly limited, but from the viewpoint of the effect of the present invention, for example, the content ratio of the calcium element derived from calcium salicylate to sorbitan ester in the fuel oil composition may be 1: 1 to 1: 10000, preferably 1: 1 to 1: 1000, and more preferably 1: 2 to 1: 500, in terms of mass ratio.
By adopting the above-described configuration, the fuel oil composition of the present invention can easily produce a fuel oil composition which can suppress precipitation of sludge during storage and use and has various characteristics such as combustibility, storage stability, low-temperature fluidity, and handling property.
The fuel oil composition of the present invention may further contain other additives for the purpose of, for example, improving combustibility, storage stability, oxidation stability, wear resistance, homogeneity, safety, environmental suitability, startability, low-temperature fluidity, and handling properties. Such additives may include, for example, 0.0001 to 50 mass% in total of one or more selected from the group consisting of a surface ignition agent, an octane number improver, a cetane number improver, an antibacterial/bactericidal agent, a rust inhibitor, a deposit improver, an antioxidant, a metal deactivator, an anti-wear agent, a detergent/dispersant (excluding calcium salicylate), a fluidity improver, an antifreeze, an anti-knock agent, an anti-corrosion agent, an antistatic agent, a combustion improver, and a dye, with respect to the total amount of the fuel oil composition.
Examples of the surface ignition inhibitor include: organic phosphorus compounds such as tributyl phosphite, trimethyl phosphite, tricresyl phosphate, tricyclohexyl phosphate, cresyldiphenyl phosphate, trimethyl phosphate, and methylphenyl phosphate; one or more kinds of organic boron compounds such as 2-ethylhexyl borate and butyl diisobutyl borate can be used. The content of the surface ignition inhibitor is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of octane number enhancers include: methanol, ethanol, butanol, butyl acetate, methyl t-butyl ether, ethyl t-butyl ether, methyl t-amyl ether, N-methylaniline, methylcyclopentadienyl manganese tricarbonyl, tetraethyl lead, and the like, and one or two or more of them may be used. The content of the octane number enhancer is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the cetane number improver include: aliphatic nitrates such as ethyl nitrate, methoxyethyl nitrate, isopropyl nitrate, amyl nitrate, hexyl nitrate, heptyl nitrate, octyl nitrate, 2-ethylhexyl nitrate, and cyclohexyl nitrate; peroxides such as di-t-butyl peroxide, and the like, and one or two or more of them may be used. The content of the cetane number improver is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the antibacterial/bactericidal agent include: inorganic bactericides such as silver sulfate, silver nitrate, zinc sulfate, zinc nitrate, copper sulfate, and copper ethylenediaminetetraacetate; organic nitrogen-based antibacterial agents such as hexahydro-1, 3, 5-tris (2-hydroxyethyl) -s-triazine; organic bromine-based antibacterial agents such as 2, 2-dibromo-3-nitrilopropionamide, 1, 4-bis (bromoacetoxy) -2-ethane, and bis (tribromomethylsulfonyl) sulfone; isothiazoline-based antibacterial agents such as 2-methyl-4-isothiazolin-3-one, 2-methyl-4, 5-trimethylene-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-N-octylisothiazolin-3-one, 4, 5-dichloro-2-N-octylisothiazolin-3-one, 1, 2-benzisothiazolin-3-one, and N-butyl-1, 2-benzisothiazolin-3-one, and one or more of these can be used. The content of the antibacterial/bactericidal agent is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the rust inhibitor include: fatty amines and salts thereof, organic phosphates, organic sulfonates, and the like, and one or two or more of them may be used. The content of the rust inhibitor is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the deposit improving agent include: tricresyl phosphate, trimethyl phosphate, tris (chloroethyl) phosphate, polypropylene, polybutene, polyisobutene amine, polyether amine, polyalkylamine, polyoxyalkylene amine, Polyalkylphenoxyaminoalkane (Polyalkylphenoxyaminoalkane), polyalkylene succinimide, etc., and one or more kinds of these may be used. The content of the deposit improver is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the antioxidant include: amine antioxidants such as N, N '-diisopropyl-p-phenylenediamine, N' -dibutyl-p-phenylenediamine, N '-dioctyl-p-phenylenediamine, N' -diphenyl-p-phenylenediamine, N '-ditolyl-p-phenylenediamine, and N-tolyl-N' -ditolyl-p-phenylenediamine; phenol antioxidants such as 2-tert-butylphenol, 2, 6-di-tert-butyl-4-methylphenol, 2, 4-dimethyl-6-tert-butylphenol, and 2, 4, 6-tri-tert-butylphenol; and sulfur-based antioxidants such as dilauryl 3, 3 ' -thiodipropionate, distearyl 3, 3 ' -thiodipropionate, lauryl stearyl 3, 3 ' -thiodipropionate, dimyristyl 3, 3 ' -thiodipropionate, distearyl β, β ' -thiodibutyrate, and dilauryl sulfide, and one or more of these may be used. The content of the antioxidant is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the metal deactivator include: amino compounds such as ethylenediamine; salicylidene-based compounds such as N, N '-disalicylidene-1, 2-diaminopropane, N' -disalicylidene-2-cyclohexanediamine, N '-disalicylidene ethylenediamine, N' -bis (dimethylsalicylidene) ethylenediamine, salicylaldoxime; triazole-based compounds such as 1- [ bis (2-ethylhexyl) aminomethyl-1, 2, 4-triazole, 1- (1-butoxyethyl) -1, 2, 4-triazole, 4' -methylenebis (2-undecyl-5-methylimidazole), and bis [ (N-methyl) imidazol-2-yl ] methanolyl ether; benzotriazole compounds such as 4-alkylbenzotriazole, 4, 5, 6, 7-tetrahydrobenzotriazole, 5' -methylenedibenzotriazole, 1- [ bis (2-ethylhexyl) aminomethyl) triazole, 1- [ bis (2-ethylhexyl) aminomethyl) benzotriazole, 1- (nonyloxymethyl) benzotriazole, and 1- (1-butoxyethyl) benzotriazole, and one or more of these compounds can be used. The content of the metal deactivator is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the anti-wear agent include: sulfur-based anti-wear agents such as sulfurized fats and oils, olefin polysulfides, sulfurized olefins, dibenzyldisulfide, ethyl-3- [ [ bis (1-methylethoxy) phosphorothioyl ] thio ] propionate, tris- [ (2, or 4) -isoalkylphenol ] thiophosphate, 3- (diisobutyoxy-thiophosphorylsulfonyl) -2-methyl-propionic acid, triphenylthiophosphate, β -dithiophosphorylated propionic acid, methylenebis (dibutyldithiocarbamate), O-diisopropyl-dithiophosphorylethylpropionate, 2, 5-bis (n-nonyldithio) -1, 3, 4-thiadiazole, 2, 5-bis (1, 1, 3, 3-tetramethylbutylthio) 1, 3, 4-thiadiazole, and 2, 5-bis (1, 1, 3, 3-tetramethyldithio) -1, 3, 4-thiadiazole; monooctylphosphate, dioctylphosphate, trioctylphosphate, monobutylphosphate, dibutylphosphate, tributylphosphate, monophenylphosphate, diphenylphosphate, triphenylphosphate, tricresylphosphate, monoisopropylphenylphosphate, diisopropylphenylphosphate, triisopropylphenylphosphate, mono-tert-butylphenyl phosphate, di-tert-butylphenyl phosphate, tri-tert-butylphenyl phosphate, phosphorus-based compounds such as triphenyl thiophosphate, monooctyl phosphite, dioctyl phosphite, trioctyl phosphite, monobutyl phosphite, dibutyl phosphite, tributyl phosphite, monophenyl phosphite, diphenyl phosphite, triphenyl phosphite, monoisopropylphenyl phosphite, diisopropylphenyl phosphite, triisopropylphenyl phosphite, mono-tert-butylphenyl phosphite, di-tert-butylphenyl phosphite, and tri-tert-butylphenyl phosphite; fatty acids such as caprylic acid, 2-ethylhexanoic acid, pelargonic acid, isononanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, and behenic acid; organic metal compounds such as metal naphthenate, metal fatty acid, metal phosphate and metal phosphite; and boron compounds, alkylamine salts of mono-and dihexylphosphoric acid, amine phosphate salts, and mixtures of triphenylphosphorothioate and tert-butylphenyl derivatives, and the like. The content of the anti-wear agent is not particularly limited, and is preferably 0.01 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of detergents/dispersants include: phosphoric acid amide, aminoalkane, alkylamide phosphate ester, polyetheramine, polybutenylamine, alkenylsuccinimide, alkenylsuccinate, metal salicylate (excluding calcium salicylate), metal sulfonate, metal carboxylate, metal phosphonate, and the like, and one or two or more of them may be used. The content of the detergent/dispersant is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
Examples of the fluidity improver include: one or more of a polymethacrylate-based polymer, a polyacrylate-based polymer, an ethylenically unsaturated polymer, an ethylene-vinyl acetate-based copolymer, a polyolefin-substituted phenol-based polymer, an alkenyl succinamide, a fatty acid ester of an alkylene oxide adduct of an alkane polyol, a fatty acid ester of an alkylene oxide adduct of an alkanolamide, and the like can be used. The content of the fluidity improver is not particularly limited, and is preferably 0.001 to 10% by mass based on the total amount of the fuel oil composition, for example.
The CCAI (Calculated Carbon aromatic Index) of the fuel oil composition of the present invention is not particularly limited, but is preferably 780 to 900 inclusive, more preferably 800 to 860 inclusive, from the viewpoint of each characteristic of the fuel oil composition. In the present invention, the CCAI of the fuel oil composition is calculated based on ISO 8217.
The flash point of the fuel oil composition of the present invention is not particularly limited, but is preferably 40 ℃ or higher and 120 ℃ or lower from the viewpoint of various properties of the fuel oil composition. In the present invention, the flash point of the fuel oil composition is measured by the Binsky-Martens closed cup method (Pensky-Martens closed cup method) described in JIS K2265-3 (2007).
The pour point of the fuel oil composition of the present invention is not particularly limited, but is preferably from-40 ℃ to 30 ℃ from the viewpoint of various properties of the fuel oil composition. In the present invention, the pour point of the fuel oil composition is measured by the method described in JIS K2269 (1987).
Hair brushThe kinematic viscosity of the clear fuel oil composition is not particularly limited, but from the viewpoint of various properties of the fuel oil composition, the kinematic viscosity at 40 ℃ is preferably 1 to 400mm2More preferably 2 to 200mm in terms of the total mass of the composition2(ii) s, most preferably 2 to 100mm2/s。
The density of the fuel oil composition of the present invention is not particularly limited, but from the viewpoint of various properties of the fuel oil composition, the density at 15 ℃ is preferably 0.70g/cm3Above and 1.00g/cm3Hereinafter, more preferably 0.80g/cm3Above and 0.98g/cm3The following. In the present invention, the density of the fuel oil composition is measured by the method described in JIS K2249 (2011).
The fuel oil composition of the present invention can be used without particular limitation as long as it is a liquid fuel oil, and can be used, for example, as an automotive fuel oil for passenger cars, trucks and the like, a marine fuel oil for passenger ships, cargo ships and the like, a fuel oil for aircrafts, helicopters and the like, a fuel oil for railway vehicles such as diesel locomotives and the like, a fuel oil for agricultural machinery, a fuel oil for construction machinery and the like, and among them, it is preferably used as a marine fuel oil.
Examples
The present invention will be further specifically described below with reference to examples. In the following examples,% is based on mass unless otherwise specified. The components used in the examples are as follows.
[ preparation of calcium salicylate Diluent ]
Calcium salicylate dilutions 1 to 17 and low base number calcium salicylate dilutions were prepared by mixing and diluting calcium salicylate and the following fuel oil base oil a at a mass ratio of 40: 60 using the following fuel oil base oil, calcium salicylate 1 to 17 described in table 1, and low base number calcium salicylate (comparative compound). In Table 1, the structural ratio of (1): (2) represents the molar ratio of the compound represented by the general formula (1) to the compound represented by the general formula (2) in each calcium salicylate, and R represents1、R2The structure of each calcium salicylate is represented by the general formula (1)1The structure of (A) and each of the salicyclic compounds represented by the general formula (2)R of calcium carbonate2The structure of (1).
< fuel oil base oil >
Fuel oil base oil a: the sulfur content is 0.25 percent, and the kinematic viscosity at 40 ℃ is 25.0mm2A cracked base oil fraction in terms of/s.
[ Table 1]
Figure BDA0003284399250000131
[ preparation of Fuel oil composition A ]
The following fuel oil base oil, calcium salicylate diluent, sorbitan ester, and dispersant as a comparative compound were used to prepare fuel oil compositions as shown in tables 2 to 9 below. In addition, the calcium element contents of calcium salicylate and comparative compounds in the calcium salicylate dilution derived from each fuel oil composition are also shown in tables 2 to 9.
< fuel oil base oil >
Fuel oil base oil 1: the sulfur content is 0.44%, and the kinematic viscosity at 40 ℃ is 5.5mm2(ii) a fuel oil base oil (a mixed base oil of 20 mass% of a C heavy oil having a sulfur element content of 2.1% and 80 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 2: the sulfur content is 0.24%, and the kinematic viscosity at 40 ℃ is 4.2mm2(ii) fuel oil base oil (mixed base oil of 10 mass% of C heavy oil having a sulfur element content of 2.1% and 90 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 3: the sulfur content is 0.04%, and the kinematic viscosity at 40 ℃ is 3.1mm2(ii) fuel oil base oil (mixed base oil of 0.5 mass% of C heavy oil having a sulfur element content of 2.1% and 99.5 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 6: the sulfur content is 0.36 percent, and the kinematic viscosity at 40 ℃ is 120mm2(ii) a fuel oil base oil (a mixed base oil of 5 mass% VLSFO having a sulfur element content of 0.46% and 95 mass% VLSFO having a sulfur element content of 0.35%).
Fuel oil base oil 7: the sulfur content is 0.46 percent, and the kinematic viscosity at 40 ℃ is 138mm2VLSFO/s of a fuel oil base oil.
Fuel oil base oil 8: the sulfur content is 0.47%, and the kinematic viscosity at 40 ℃ is 475mm2VLSFO/s of a fuel oil base oil.
Fuel oil base oil 9: the sulfur content is 0.44%, and the kinematic viscosity at 40 ℃ is 8.1mm2VLSFO/s of a fuel oil base oil.
< calcium salicylate Diluent >
Calcium salicylate diluent 1: 224mgKOH/g, calcium element ratio 8.1%.
Calcium salicylate diluent 2: 156mgKOH/g, calcium element ratio 5.5%.
Calcium salicylate diluent 3: 111mgKOH/g, calcium element ratio 4.0%.
Calcium salicylate diluent 4: 344mgKOH/g, calcium element ratio 12.9%.
Calcium salicylate diluent 5: 168mgKOH/g, calcium element ratio 5.6%.
Calcium salicylate diluent 6: 280mgKOH/g, calcium element ratio 10.0%.
Calcium salicylate diluent 7: 267mgKOH/g, calcium element ratio 10.0%.
Calcium salicylate diluent 8: 160mgKOH/g, calcium element ratio 6.3%.
Calcium salicylate diluent 9: 170mgKOH/g, calcium element ratio 6.1%.
Calcium salicylate diluent 10: 229mgKOH/g, calcium element ratio 8.0%.
Calcium salicylate dilution 11: 320mgKOH/g, calcium element ratio of 11.0%.
Calcium salicylate diluent 12: 63mgKOH/g, calcium element ratio 2.1%.
Calcium salicylate diluent 13: 170mgKOH/g, calcium element ratio 6.1%.
Calcium salicylate dilution 14: 190mgKOH/g, calcium element ratio 6.7%.
Calcium salicylate diluent 15: 279mgKOH/g, the calcium element ratio is 11.7%.
Calcium salicylate diluent 16: 240mgKOH/g, and a calcium element ratio of 9.6%.
Calcium salicylate diluent 17: 173mgKOH/g, calcium element ratio 6.2%.
< sorbitan ester >
Sorbitan ester 1: sorbitan sesquioleate (HLB: 3.7).
Sorbitan ester 2: sorbitan monooleate (HLB: 4.3).
Sorbitan ester 3: sorbitan trioleate (HLB: 1.8).
Sorbitan ester 4: polyoxyethylene (6) sorbitan monooleate (HLB: 10.0).
< comparative Compound >
Low base number calcium salicylate dilutions: diluent of low base number calcium salicylate (16mgKOH/g, calcium element ratio 0.9%).
Calcium sulfonate dilution: 300mgKOH/g, and 11.8% of calcium element (750mgKOH/g, a dilution obtained by mixing a calcium sulfonate having a calcium element ratio of 30% with fuel oil base oil A in a mass ratio of 40: 60).
Alkyl salicylic acid: 5-methyl salicylic acid.
Alkyl salicylate: 2-ethylhexyl salicylate.
Succinimide dispersant: polyisobutylene succinimide.
Phosphate-based dispersant: oleyl-4 EO phosphate.
Pluronic (Pluronic) type dispersants: POE-POP block polymers of ethylenediamine.
Polycarboxylic acid-based dispersant: olefin/maleic acid copolymer sodium salt.
Acetylene-based dispersant: POE-POP block polymers of acetylene glycol.
[ Table 2]
Figure BDA0003284399250000171
[ Table 3]
Figure BDA0003284399250000181
[ Table 4]
Figure BDA0003284399250000191
[ Table 5]
Figure BDA0003284399250000201
[ Table 6]
Figure BDA0003284399250000211
[ Table 7]
Figure BDA0003284399250000221
[ Table 8]
Figure BDA0003284399250000231
[ Table 9]
Figure BDA0003284399250000241
< evaluation of sludge dispersibility >
The fuel oil compositions prepared in examples 1 to 41 and comparative examples 1 to 20 were evaluated for the dispersion/precipitation characteristics of the sludge by the spot test method described in ASTM D4740 (2014). Specifically, each fuel oil composition heated to 90 ℃ was dropped on a filter paper (test paper) and held at 100 ℃ for 1 hour, and then the state of spots on the filter paper was evaluated by a spot test according to the following evaluation index. In this evaluation, the evaluation index 1 indicates that the dispersibility of sludge (precipitation suppression of sludge) is optimal, and 1 or 2 indicates that the evaluation has practical applicability. The results are shown in tables 2 to 9.
< evaluation index of Spot test >
1: no inner ring was observed and the spots were uniform
2: the inner ring is slightly or incompletely observed
3: an inner ring slightly darker than the background was observed
4: an inner ring was observed which was darker than 3 and slightly darker than background
5: particles or granules were observed in the center of the inner ring, which was significantly darker than the background
From the above results, it can be said that the fuel oil composition of the present invention is excellent in the dispersibility of sludge, and thus is excellent in the suppression of the precipitation of sludge during storage and use.
[ preparation B of Fuel oil composition ]
The following blending examples of fuel oil compositions prepared using the fuel oil base oil, calcium salicylate diluent, sorbitan ester and other additives are shown in tables 10 to 15.
< fuel oil base oil >
Fuel oil base oil 1: the sulfur content is 0.44%, and the kinematic viscosity at 40 ℃ is 5.5mm2(ii) a fuel oil base oil (a mixed base oil of 20 mass% of a C heavy oil having a sulfur element content of 2.1% and 80 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 2: the sulfur content is 0.24%, and the kinematic viscosity at 40 ℃ is 4.2mm2(ii) fuel oil base oil (mixed base oil of 10 mass% of C heavy oil having a sulfur element content of 2.1% and 90 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 3: the sulfur content is 0.04%, and the kinematic viscosity at 40 ℃ is 3.1mm2(ii) fuel oil base oil (mixed base oil of 0.5 mass% of C heavy oil having a sulfur element content of 2.1% and 99.5 mass% of MGO having a sulfur element content of 0.03%).
Fuel oil base oil 4: the sulfur content is 0.03 percent, and the kinematic viscosity at 40 ℃ is 3.1mm2S fuel oil baseOil (MGO 100 mass% with a sulfur element content of 0.03%).
Fuel oil base oil 5: the sulfur content is 0.30%, and the kinematic viscosity at 40 ℃ is 90mm2(ii) a fuel oil base oil (a blend base oil of ULSFO 20 mass% having a sulfur element content of 0.08% and VLSFO 80 mass% having a sulfur element content of 0.35%).
Fuel oil base oil 6: the sulfur content is 0.36 percent, and the kinematic viscosity at 40 ℃ is 120mm2(ii) a fuel oil base oil (a mixed base oil of 5 mass% VLSFO having a sulfur element content of 0.46% and 95 mass% VLSFO having a sulfur element content of 0.35%).
Fuel oil base oil 7: the sulfur content is 0.46 percent, and the kinematic viscosity at 40 ℃ is 138mm2VLSFO/s of a fuel oil base oil.
Fuel oil base oil 8: the sulfur content is 0.47%, and the kinematic viscosity at 40 ℃ is 475mm2VLSFO/s of a fuel oil base oil.
Fuel oil base oil 9: the sulfur content is 0.44%, and the kinematic viscosity at 40 ℃ is 8.1mm2VLSFO/s of a fuel oil base oil.
< calcium salicylate Diluent >
Calcium salicylate diluent 3: 111mgKOH/g, calcium element ratio 4.0%.
Calcium salicylate diluent 9: 170mgKOH/g, calcium element ratio 6.1%.
Calcium salicylate dilution 11: 320mgKOH/g, calcium element ratio of 11.0%.
Calcium salicylate diluent 16: 240mgKOH/g, and a calcium element ratio of 9.6%.
< sorbitan ester >
Sorbitan ester 1: sorbitan sesquioleate (HLB: 3.7).
Sorbitan ester 2: sorbitan monooleate (HLB: 4.3).
Sorbitan ester 3: sorbitan trioleate (HLB: 1.8).
Sorbitan ester 4: polyoxyethylene (6) sorbitan monooleate (HLB: 10.0).
< antibacterial/disinfectant >
Antibacterial/bactericidal agent 1: POE laurylamine.
Antibacterial/germicide 2: hexahydro-1, 3, 5-tris (2-hydroxyethyl) -s-triazine.
Antibacterial/bactericidal agent 3: 1, 2-benzisothiazolin-3-one.
< anti-rust agent >
1, antirust agent: octylamine.
And (3) antirust agent 2: tetrapropenyl succinate.
< antioxidant >
Antioxidant 1: 2, 6-di-tert-butylphenol.
Antioxidant 2: n, N' -dioctyl-p-phenylenediamine.
Antioxidant 3: distearyl β, β' -thiodibutyrate.
< antiwear agent >
Wear-resistant agent 1: oleic acid.
Wear-resisting agent 2: octyl acid phosphate ester.
Wear-resisting agent 3: zinc dibutyldithiophosphate.
< fluidity improver >
Fluidity improver 1: ethylene-vinyl acetate copolymer.
Fluidity improver 2: methyl methacrylate-cetyl acrylate copolymer.
Fluidity improver 3: behenate of triethanolamine EO adduct.
[ Table 10]
Figure BDA0003284399250000281
[ Table 11]
Figure BDA0003284399250000291
[ Table 12]
Figure BDA0003284399250000301
[ Table 13]
Figure BDA0003284399250000311
[ Table 14]
Figure BDA0003284399250000321
[ Table 15]
Figure BDA0003284399250000331
The present invention can provide a fuel oil composition that is excellent in suppressing precipitation of sludge during storage and use. Further, the present invention provides a fuel oil composition having excellent combustibility, storage stability, oxidation stability, wear resistance, homogeneity, safety, environmental suitability, startability, low-temperature fluidity, handling properties, and the like.

Claims (11)

1. A fuel oil composition comprising a fuel oil base oil having a sulfur element content of 0.01 to 0.50% by mass and calcium salicylate having a total base number of 100 to 1200 mgKOH/g.
2. The fuel oil composition according to claim 1, wherein,
the content of calcium salicylate is 1 to 2000 mass ppm in terms of calcium element content relative to the total amount of the fuel oil composition.
3. The fuel oil composition according to claim 1 or 2, wherein,
the calcium salicylate comprises a calcium salt of an alkyl salicylic acid represented by the following general formula (1) or general formula (2),
Figure FDA0003284399240000011
in the formula, R1Represents a C4-32 hydrocarbon group, R2Represents a hydrocarbon group having 4 to 32 carbon atoms.
4. The fuel oil composition according to any one of claims 1 to 3, wherein,
the ratio of the sulfur content in the fuel oil base oil to the calcium content derived from calcium salicylate is 1000: 1 to 0.5: 1 by mass ratio.
5. The fuel oil composition according to any one of claims 1 to 4, wherein,
the kinematic viscosity of the fuel oil base oil at 40 ℃ is 1-600 mm2/s。
6. The fuel oil composition according to any one of claims 1 to 5, wherein,
further comprises sorbitan ester.
7. The fuel oil composition according to any one of claims 1 to 6, wherein,
the fuel oil composition is a marine fuel oil composition.
8. A method for suppressing precipitation of oil sludge in a fuel oil composition, which comprises adding calcium salicylate having a total base number of 100 to 1200mgKOH/g to a fuel oil base oil having a sulfur element content of 0.01 to 0.50% by mass.
9. The method of claim 8, wherein,
the fuel oil composition is a marine fuel oil composition.
10. The calcium salicylate is used for inhibiting the precipitation of oil sludge in a fuel oil composition, wherein the total base number of the calcium salicylate is 100-1200 mgKOH/g, and the fuel oil composition contains fuel oil base oil with the sulfur element content of 0.01-0.50 mass%.
11. The use according to claim 10, wherein,
the fuel oil composition is a marine fuel oil composition.
CN202080025651.XA 2019-03-28 2020-03-23 Fuel oil composition Pending CN113646414A (en)

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