WO2013145535A1 - 軽油組成物 - Google Patents
軽油組成物 Download PDFInfo
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- WO2013145535A1 WO2013145535A1 PCT/JP2013/000948 JP2013000948W WO2013145535A1 WO 2013145535 A1 WO2013145535 A1 WO 2013145535A1 JP 2013000948 W JP2013000948 W JP 2013000948W WO 2013145535 A1 WO2013145535 A1 WO 2013145535A1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
- C10L10/16—Pour-point depressants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/192—Macromolecular compounds
- C10L1/195—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C10L1/196—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof homo- or copolymers of compounds having one or more unsaturated aliphatic radicals each having one carbon bond to carbon double bond, and at least one being terminated by a carboxyl radical or of salts, anhydrides or esters thereof
- C10L1/1963—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof homo- or copolymers of compounds having one or more unsaturated aliphatic radicals each having one carbon bond to carbon double bond, and at least one being terminated by a carboxyl radical or of salts, anhydrides or esters thereof mono-carboxylic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1022—Fischer-Tropsch products
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/30—Physical properties of feedstocks or products
- C10G2300/302—Viscosity
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/30—Aromatics
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
- C10L1/08—Liquid carbonaceous fuels essentially based on blends of hydrocarbons for compression ignition
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
- C10L2200/0461—Fractions defined by their origin
- C10L2200/0469—Renewables or materials of biological origin
- C10L2200/0492—Fischer-Tropsch products
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L2270/00—Specifically adapted fuels
- C10L2270/02—Specifically adapted fuels for internal combustion engines
- C10L2270/026—Specifically adapted fuels for internal combustion engines for diesel engines, e.g. automobiles, stationary, marine
Definitions
- the present invention relates to a light oil composition, in particular, a light oil composition that can be used even in a very low temperature environment.
- gas oil compositions are obtained by hydrorefining or hydrodesulfurizing straight-run gas oil obtained from crude oil atmospheric distillation equipment, or hydrotreating straight-run kerosene obtained from crude oil atmospheric distillation equipment. And one or two or more of those subjected to hydrodesulfurization treatment.
- the mixing ratio of the above kerosene base and gas oil base is often controlled, and cetane number improvers, detergents, and low temperature fluidity improvement as necessary. Additives such as agents are blended.
- Fischer-Tropsch synthetic oil obtained by Fischer-Tropsch synthesis using carbon monoxide and hydrogen as raw materials is used as an alternative fuel for petroleum-based fuels.
- Use is under consideration. If diesel oil for diesel fuel is produced from FT synthetic oil, a diesel oil that does not contain sulfur is obtained. Therefore, the FT synthetic diesel oil is preferable in terms of reducing environmental impact.
- the above-mentioned FT synthetic oil has a relatively large content of linear saturated hydrocarbon (normal paraffin) compound, and when it contains a particularly heavy normal paraffin compound, the FT synthetic oil itself may precipitate as a wax. Sex is pointed out.
- the FT synthesis base material is a hydrocarbon mixture in which the above-mentioned normal paraffin and the saturated hydrocarbon (isoparaffin) compound having a side chain occupy the most, generally it is poor in oil solubility, and oil-soluble groups (linear alkyl) Additives of the type that dissolve in fuel oils such as light oil, depending largely on the base, etc., may be difficult to dissolve. From the above, there has been a problem that light oil derived from FT synthetic oil cannot be used in a low temperature environment.
- Patent Document 1 discloses a technique for improving fluidity in a low temperature environment by adding and mixing a lubricity improver and a low temperature fluidity improver to an FT synthetic light oil composition having a specific composition. Has been.
- the present invention has been developed in view of the above situation, and can exhibit excellent low-temperature performance as compared with the prior art even when oil containing a high amount of normal paraffin such as FT synthetic oil is included as a raw material. It aims at providing a light oil composition.
- the present inventors have attempted to optimize the composition of the light oil composition, and by adding a specific amount of a low-temperature fluidity improver to the light oil composition, It has been found that excellent fluidity in a low temperature environment can be realized without lowering the kinematic viscosity.
- the present invention has been made based on such findings, and the gist thereof is as follows.
- Sulfur content is 1 mass ppm or less
- aromatic content is 1 mass% or less
- paraffin content with 5 to 15 carbon atoms is 30 to 85 mass%
- paraffin content with 20 to 27 carbon atoms is 3 to 20 mass%
- the gas oil composition according to the present invention has a sulfur content of 1 mass ppm or less, an aromatic content of 1 mass% or less, a paraffin content of 5 to 15 carbon atoms of 30 to 85 mass%, and a paraffin content of 20 to 27 carbon atoms.
- the isoparaffin content is 50 to 75% by mass and the low temperature fluidity improver is contained in an amount of 20 to 1000 ppm by mass.
- the light oil composition of the present invention has a sulfur content of 1 mass ppm or less and an aromatic content of 1 mass% or less.
- the sulfur content is 1 mass ppm or less and the aromatic content is 1 mass% or less.
- the gas oil composition of the present invention has a paraffin content of 5 to 15 carbon atoms of 30 to 85% by mass, preferably 40 to 70% by mass.
- the paraffin content having 5 to 15 carbon atoms is limited to 30% by mass or more from the viewpoint of improving startability of the diesel engine and rotational stability during idling, and 85 from the viewpoint of reducing particulate matter discharged from the diesel engine. It is limited to mass% or less.
- the gas oil composition of the present invention has a paraffin content of 20 to 27 carbon atoms of 3 to 20% by mass, preferably 7 to 16% by mass.
- the paraffin content having 20 to 27 carbon atoms needs to be 3% by mass or more in order to improve the solubility of the low temperature fluidity improver, and 20% by mass or less in order to improve the low temperature fluidity of the light oil composition. Is necessary.
- the light oil composition of the present invention has an isoparaffin content of 50 to 75% by mass, preferably 60 to 70% by mass. In order to improve startability and operability at low temperatures, the isoparaffin content needs to be 50% by mass or more, and in order to obtain a light oil composition with a high yield, the isoparaffin content is 75% by mass or less. There is a need to.
- the mass ratio of the normal paraffin to the isoparaffin is preferably in the range of 0.3 to 1.0, more preferably 0.4 to 0.7. .
- This mass ratio (normal paraffin content / isoparaffin content) is set to 0.3 or more in order to improve the startability at the time of combustion and the rotational stability at idling of the diesel engine under extremely low temperature weather conditions. In order to improve the startability and operability of the oil, it is isomerized and contains isoparaffin or more, and therefore it is preferably 1.0 or less.
- the light oil composition of the present invention preferably has a 5% distillation temperature of 140 to 200 ° C, more preferably 150 to 195 ° C.
- the 5% distillation temperature should be 140 ° C or higher, and in order to improve the startability and operability at low temperatures,
- the exit temperature is preferably 200 ° C. or lower.
- the light oil composition of the present invention preferably has a 95% distillation temperature of 300 to 340 ° C, more preferably 310 to 330 ° C. From the viewpoint of improving the fuel consumption rate of the diesel engine, the 95% distillation temperature is preferably set to 300 ° C. or higher. From the viewpoint of reducing particulate matter discharged from the diesel engine, the 95% distillation temperature is set to 340 ° C. or lower. It is preferable that
- the light oil composition of the present invention preferably has a density at 15 ° C. of 0.750 to 0.780 g / cm 3 , more preferably 0.760 to 0.780 g / cm 3 .
- the density at 15 ° C. is 0.750 g / cm 3 or more in order to improve the fuel consumption rate of the diesel engine, and 0.780 g / cm 3 or less in order to improve the low temperature fluidity of the light oil composition.
- the light oil composition of the present invention preferably has a cloud point of ⁇ 35 ° C. or lower, more preferably ⁇ 55 ° C. or lower so that it can be used under extremely low temperature weather conditions.
- the cloud point means a cloud point measured according to JIS K 2269 “Pour point of crude oil and petroleum products and petroleum product cloud point test method”.
- the kinematic viscosity at 30 ° C. of the light oil composition of the present invention is preferably 1.5 to 4.0 mm 2 / s, more preferably 2.0 to 3.5 mm 2 / s.
- the pour point of the light oil composition of the present invention is preferably ⁇ 35 ° C. or lower.
- the pour point is preferably ⁇ 35 ° C. or lower, more preferably ⁇ 55 ° C. or lower.
- the pour point is preferably ⁇ 70 ° C. or higher, more preferably ⁇ 66 ° C. or higher.
- the light oil composition of the present invention needs to contain 150 to 1000 mass ppm of the low temperature fluidity improver, preferably 150 to 500 mass%, more preferably 200 to 300 mass%.
- the content (addition amount) of the low temperature fluidity improver is set to 150 ppm by mass or more in order to prevent the filter of the diesel vehicle from being clogged at a low temperature, and is 1000 from the viewpoint of the effectiveness of the low temperature fluidity improver and the economy. It shall be below mass ppm.
- low-temperature kinematic viscosity improver an ethylene-vinyl acetate copolymer and / or a low-temperature fluidity improver having a surface active effect is used.
- low-temperature fluidity improvers having surface-active effects include copolymers of ethylene and methyl methacrylate, copolymers of ethylene and ⁇ -olefins, chlorinated methylene-vinyl acetate copolymers, unsaturated carboxylic acids.
- the light oil composition of the present invention preferably contains a lubricity improver in an active ingredient concentration of 20 to 300 mg / L, more preferably 50 to 200 mg / L.
- a lubricity improver in an active ingredient concentration of 20 to 300 mg / L, more preferably 50 to 200 mg / L.
- a lubricity improver containing a compound having a polar group consisting of a fatty acid and / or a fatty acid ester is used.
- the detailed compound name etc. are not specifically limited, For example, 1 type, or 2 or more types of each lubricity improvement agent of a carboxylic acid type
- Examples of the carboxylic acid-based lubricity improver include linoleic acid, oleic acid, salicylic acid, palmitic acid, myristic acid, hexadecenoic acid and a mixture of two or more of the above carboxylic acids.
- Examples of ester-based lubricity improvers include carboxylic acid esters of glycerin.
- the carboxylic acid constituting the carboxylic acid ester may be one kind or two or more kinds, and specific examples thereof include linoleic acid, oleic acid, salicylic acid, palmitic acid, myristic acid, hexadecenoic acid and the like.
- the weight average molecular weight of the active component of the above-described lubricity improver is preferably 200 or more and 1,000 or less in order to increase the solubility in the light oil composition.
- additives Further, for the purpose of further enhancing the performance of the light oil composition of the present invention, other known fuel oil additives (hereinafter referred to as “other additives” for convenience) to be described later are added alone or in combination of several kinds. You can also.
- additives include, for example, phenol-based and amine-based antioxidants; metal deactivators such as salicylidene derivatives; corrosion inhibitors such as aliphatic amines and alkenyl succinic acid esters; anionic-based, cationic-based, Antistatic agents such as amphoteric surfactants; coloring agents such as azo dyes; antifoaming agents such as silicones; antifreezing agents such as 2-methoxyethanol, isopropyl alcohol, and polyglycol ether.
- the addition amount of other additives can be arbitrarily determined, but the addition amount of each additive is preferably 0.5% by mass or less, more preferably 0.2% by mass or less, based on the total amount of the light oil composition. It is. In addition, this invention does not add a restriction
- the light oil composition of the present invention preferably further contains Fischer-Tropsch synthetic oil (FT synthetic oil).
- FT synthetic oil since the FT synthetic oil has a relatively high content of linear saturated hydrocarbon (normal paraffin) compound, and there is a problem that the light oil derived from the FT combined oil cannot be used in a low temperature environment, the present invention. This is because the effect of is most prominent.
- the FT synthetic oil is, for example, a step of fractionating FT synthetic oil into a light fraction and a wax fraction, a step of hydroisomerizing the light fraction to obtain a hydroisomerized oil, the wax A step of hydrocracking a fraction to obtain hydrocracked oil, a step of mixing the hydroisomerized oil and the hydrocracked oil and then supplying the hydrocracked oil to a product fractionator, and It is obtained by the manufacturing method including the process of adjusting the cut temperature in the said product fractionator so that a light oil composition may be obtained.
- the bottom oil of the product fractionator is preferably recycled and mixed with the wax fraction and then hydrocracked to obtain hydrocracked oil.
- the light gas oil base material obtained from the product fractionating device and the heavy gas oil base material may be mixed at a predetermined ratio to produce the light oil composition of the present invention.
- Each of the light gas oil base and the heavy gas oil base has a sulfur content of 1 mass ppm or less and an aromatic content of 1 mass% or less.
- the light gas oil base has a density of 0.740 to 0.760, a 5% distillation temperature of 155 to 175 ° C, a 95% distillation temperature of 230 to 250 ° C, and a paraffin content of 5 to 15 carbon atoms of 90 to 99. .9% by mass and isoparaffin content is preferably 40 to 55% by mass.
- the heavy gas oil base has a density of 0.770 to 0.790, a 5% distillation temperature of 240 to 260 ° C, a 95% distillation temperature of 330 to 350 ° C, and a paraffin content of 5 to 15 carbon atoms of 15 to The content is preferably 35% by mass and the isoparaffin content is 70 to 85% by mass.
- the base material obtained from each apparatus of a solvent or an oil refinery plant can also be suitably prepared and prepared so that the composition of the light oil composition of this invention may be satisfy
- Paraffin content, isoparaffin content Paraffin content, paraffin content for each carbon number, and isoparaffin content were measured using GC-FID.
- a non-polar column stainless capillary column ULTRA ALLOY-1 and FID (flame ionization detector) and a carrier gas (helium) flow rate of 1.0 mL / min
- a predetermined temperature program columnumn isothermal temperature: 140 ° C to 355 ° C
- the temperature was raised to 8 ° C./min at 8 ° C./min and calculated from the values measured at a sample injection temperature of 360 ° C. and a detector temperature of 360 ° C.
- a light gas oil base and a heavy gas oil base were prepared according to the following procedure.
- the light fraction of the FT synthetic oil was hydroisomerized (LHSV1.8h-1, hydrogen partial pressure 3.0 MPa, reaction temperature 320 ° C.).
- the hydroisomerized oil obtained and the FT synthetic oil wax fraction were hydrocracked (LHSV1.8h-1, hydrogen partial pressure 4.0 MPa, reaction temperature 310 ° C.).
- the cracked oil was mixed with the bottom oil of the product fractionator (the fraction having a cut temperature of 360 ° C. or higher) while being recycled (recycle ratio 50 vol%), and then supplied to the product fractionator.
- the light light oil base material and the heavy light oil base material were obtained by fractionating with the said product fractionator.
- the cut temperature of the light gas oil base and the heavy gas oil base is 250 ° C.
- the compositions of the obtained light gas oil base 1 and heavy gas oil base 1 are shown in Table 1.
- Examples 1 to 4 Comparative Examples 1 and 2
- a light gas oil base material and a heavy gas oil base material are mixed according to the mixing ratio shown in Table 1, and a low-temperature fluidity improver (Infineum R240 manufactured by Infinium Japan Co., Ltd.) is added to give a sample by adding 200 ppm by mass.
- a light oil composition was obtained.
- Example 2 About each light oil composition obtained by the said Example and comparative example, after measuring each property (however, about distilling temperature, a cloud point, flash point, and a cetane index
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- Liquid Carbonaceous Fuels (AREA)
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Description
(1)硫黄分が1質量ppm以下、芳香族分が1質量%以下、炭素数5~15のパラフィン分が30~85質量%、炭素数20~27のパラフィン分が3~20質量%、イソパラフィン分が50~75質量%であり、低温流動性向上剤を20~1000質量ppm含むことを特徴とする軽油組成物。
本発明による軽油組成物は、硫黄分が1質量ppm以下、芳香族分が1質量%以下、炭素数5~15のパラフィン分が30~85質量%、炭素数20~27のパラフィン分が3~20質量%、イソパラフィン分が50~75質量%であり、低温流動性向上剤を20~1000質量ppm含むことを特徴とする。
本発明の軽油組成物は、硫黄分が1質量ppm以下、芳香族分が1質量%以下である。ディーゼルエンジンから排出される粒子状物質をより低減するため、また、燃費をより向上する観点から、硫黄分を1質量ppm以下、芳香族分を1質量%以下とする。
本発明の軽油組成物は、炭素数5~15のパラフィン分が30~85質量%であり、好ましくは40~70質量%である。炭素数5~15のパラフィン分は、ディーゼルエンジンの始動性やアイドリング時の回転安定性を良好にする点から30質量%以上に限定され、ディーゼルエンジンから排出される粒子状物質低減の点から85質量%以下に限定される。
本発明の軽油組成物は、炭素数20~27のパラフィン分が3~20質量%であり、好ましくは7~16質量%である。炭素数20~27のパラフィン分は、低温流動性向上剤の溶解性を良好にするため3質量%以上とする必要があり、軽油組成物の低温流動性を良好にするために20質量%以下とすることが必要である。
本発明の軽油組成物は、イソパラフィン分が50~75質量%であり、好ましくは60~70質量%である。低温時の始動性および運転性を良好にするためには、イソパラフィン分を50質量%以上とする必要があり、高収率で軽油組成物を得るためには、イソパラフィン分を75質量%以下とする必要がある。
また、前記ノルマルパラフィン分の前記イソパラフィン分に対する質量比(ノルマルパラフィン分/イソパラフィン分)は、0.3~1.0の範囲であることが好ましく、より好ましくは0.4~0.7である。この質量比(ノルマルパラフィン分/イソパラフィン分)は、非常に低温な気象条件下におけるディーゼルエンジンの燃焼時の始動性やアイドリング時の回転安定性を良好にする点から0.3以上とし、低温時の始動性及び運転性を良好にするため、異性化してイソパラフィンを一定以上含むことから、1.0以下とすることが好ましい。
本発明の軽油組成物は、5%留出温度が140~200℃であることが好ましく、より好ましくは150~195℃である。ディーゼルエンジンの始動性やアイドリング時の回転安定性を良好にするためには、5%留出温度を140℃以上とし、低温時の始動性及び運転性を良好にするためには、5%留出温度を200℃以下とすることが好ましい。
また、本発明の軽油組成物は、95%留出温度が300~340℃であることが好ましく、より好ましくは310~330℃である。ディーゼルエンジンの燃料消費率を良好にする観点で、95%留出温度を300℃以上とすることが好ましく、ディーゼルエンジンから排出される粒子状物質低減の観点から95%留出温度を340℃以下とすることが好ましい。
本発明の軽油組成物は、15℃における密度が0.750~0.780g/cm3であることが好ましく、より好ましくは0.760~0.780g/cm3である。15℃における密度は、ディーゼルエンジンの燃料消費率を良好にするために0.750g/cm3以上とし、軽油組成物の低温流動性を良好にするために0.780g/cm3以下とする。
また、本発明の軽油組成物は、非常に低温な気象条件下での使用に耐えられるように、曇り点が-35℃以下であることが好ましく、より好ましくは-55℃以下である。ここで、曇り点とは、JIS K 2269「原油及び石油製品の流動点並びに石油製品曇り点試験方法」に準じて測定される曇り点のことを意味する。
本発明の軽油組成物の30℃における動粘度は、1.5~4.0mm2/sであることが好ましく、2.0~3.5mm2/sであることがより好ましい。30℃における動粘度については、ディーゼルエンジンの始動性やアイドリング時の回転安定性を良好にする点から、1.5mm2/s以上とし、ディーゼルエンジンから排出される粒子状物質低減の点から、4.0mm2/s以下とすることが好ましい。
本発明の軽油組成物の流動点は、-35℃以下であることが好ましい。非常に低温な気象条件下における低温流動性を良好にするためには、流動点を-35℃以下とすることが好ましく、より好ましくは-55℃以下とする。
また、必要以上に流動点を低くする必要はなく、軽油組成物の製造コストの観点からは、流動点を-70℃以上とすることが好ましく、-66℃以上とすることがより好ましい。
本発明の軽油組成物は、低温流動性向上剤を150~1000質量ppm含むことが必要であり、150~500質量%含むことが好ましく、200~300質量%含むことがさらに好ましい。低温流動性向上剤の含有量(添加量)は、ディーゼル自動車のフィルターが低温時に閉塞することを防止するために150質量ppm以上とし、低温流動性向上剤の効き具合と経済性の観点から1000質量ppm以下とする。
また、本発明の軽油組成物は、潤滑性向上剤を活性分濃度で20~300mg/L含むことが好ましく、50~200mg/L含むことがより好ましい。潤滑性向上剤の添加量を20~300mg/Lの範囲内とすることで、添加された潤滑性向上剤の効能を有効に引き出すことができ、例えば分配型噴射ポンプを搭載したディーゼルエンジンにおいて、運転中のポンプの駆動トルク増を抑制し、ポンプの摩耗を低減させることができる。
また、本発明の軽油組成物の性能をさらに高める目的で、後述するその他の公知の燃料油添加剤(以下、便宜上「その他の添加剤」という。)を単独で、又は数種類組み合わせて添加することもできる。その他の添加剤としては、例えば、フェノール系、アミン系などの酸化防止剤;サリチリデン誘導体などの金属不活性化剤;脂肪族アミン、アルケニルコハク酸エステルなどの腐食防止剤;アニオン系、カチオン系、両性系界面活性剤などの帯電防止剤;アゾ染料などの着色剤;シリコン系などの消泡剤;2-メトキシエタノール、イソプロピルアルコール、ポリグリコールエーテルなどの凍結防止剤等が挙げられる。
その他の添加剤の添加量は任意に決めることができるが、添加剤個々の添加量は、軽油組成物の全量基準でそれぞれ好ましくは0.5質量%以下、より好ましくは0.2質量%以下である。
なお、本発明の軽油組成物を適用するディーゼルエンジンのその他の諸元、用途、使用環境に関しては、本発明は何ら制限を加えるものではない。
本発明の軽油組成物は、フィッシャー・トロプシュ合成油(FT合成油)をさらに含むことが好ましい。上述したように、FT合成油は、比較的直鎖飽和炭化水素(ノルマルパラフィン)化合物の含有量が多く、低温環境下ではFT合油に由来した軽油を使用できないという問題があるため、本発明による効果が最も顕著に発揮されるからである。
また、石油の代替燃料の観点で、FT合成油を活用することで、石油系の基材の消費を抑えるためには、FT合成油を含むことが好ましい。
さらにまた、本発明の軽油組成物の組成を満たすように、溶剤や石油精製プラントの各装置から得られる基材を適宜ブレンドして調製することもできる。
なお、実施例における各性状の分析方法は次のとおりである。
硫黄分:JIS K 2541「硫黄分試験方法」に準じて測定。
芳香族分:JIS K 2536-3「ガスクロマトグラフによる芳香族の求め方」に準じて測定。
蒸留性状:JIS K 2254「石油製品-蒸留試験方法」に準じて測定。
密度:JIS K 2249「原油及び石油製品の密度試験方法並びに密度・質量・容量換算表」に準じて測定。
動粘度:JISK2283「原油及び石油製品-動粘度試験方法及び粘度指数算出方法」に準じて測定。
引火点:JISK2265「原油及び石油製品引火点試験方法」に準じて測定。
セタン指数:JISK2280「8.4変数方程式を用いたセタン指数の算出方法」に準じて測定。
曇り点:JISK2269「原油及び石油製品の流動点並びに石油製品曇り点試験方法」に準じて測定。
目詰まり点:JISK2288「軽油-目詰まり点試験方法」に準じて測定。
流動点:JISK2269「原油及び石油製品の流動点並びに石油製品曇り点試験方法」に準じて測定。
パラフィン分、イソパラフィン分:パラフィン分、炭素数ごとのパラフィン分、及びイソパラフィン分は、GC-FIDを用いて測定した。無極性カラム(ステンレスキャピラリーカラムULTRA ALLOY-1)とFID(水素炎イオン化検出器)を用い、キャリアガス(ヘリウム)流量1.0mL/minにて、所定の温度プログラム(カラム恒温層温度:140℃から355℃まで8℃/minで昇温し、試料注入温度360℃、検出器温度360℃)で測定した値より算出した。
軽質軽油基材及び重質軽油基材を、以下の手順に従って準備した。
FT合成反応によって得たFT合成油を用い、FT合成油の軽質留分を水素化異性化処理(LHSV1.8h-1、水素分圧3.0MPa、反応温度320℃)を行った。その後、得られた水素化異性化処理油と、FT合成油のワックス留分を水素化分解処理(LHSV1.8h-1、水素分圧4.0MPa、反応温度310℃)によって得られた水素化分解油とを、製品分留装置のボトム油(カット温度360℃以上の留分)をリサイクル(リサイクル比率50vol%)しつつ混合した後、前記製品分留装置に供給した。そして、前記製品分留装置で分留することで、軽質軽油基材及び重質軽油基材を得た。軽質軽油基材と重質軽油基材のカット温度は250℃である。
得られた軽質軽油基材1と重質軽油基材1の組成については、表1に示す。
表1に記載の混合比に従って軽質軽油基材と重質軽油基材とを混合し、さらに低温流動性向上剤(インフィニアムジャパン社製 Infineum R240)を200質量ppm添加することで、サンプルとなる軽油組成物を得た。
非常に低温な気象条件下での使用に良好な条件として、流動点が-70~-35℃、30℃における動粘度が1.5~4.0mm2/sという条件を満たす場合を「好ましい(○)」とし、さらに、流動点が-66~-55℃、30℃における動粘度が2.0~3.5mm2/sという条件を満たす場合を「特に好ましい(◎)」とした。一方、上記条件のいずれも満たさない場合を「不良(×)」とした。
一方、各比較例で得られた軽油組成物については、非常に低温な気象条件下ではワックスが析出するか、あるいは動粘度の特性が不十分であることがわかった。
Claims (3)
- 硫黄分が1質量ppm以下、芳香族分が1質量%以下、炭素数5~15のパラフィン分が30~85質量%、炭素数20~27のパラフィン分が3~20質量%、イソパラフィン分が50~75質量%であり、
低温流動性向上剤を20~1000質量ppm含むことを特徴とする軽油組成物。 - 流動点が-70~-35℃、30℃における動粘度が1.5~4.0mm2/sであることを特徴とする請求項1に記載の軽油組成物。
- 前記軽油組成物がフィッシャー・トロプシュ合成油を含むことを特徴とする請求項1に記載の軽油組成物。
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| SG11201406015XA SG11201406015XA (en) | 2012-03-30 | 2013-02-20 | Gas oil composition |
| KR1020147030407A KR20150001788A (ko) | 2012-03-30 | 2013-02-20 | 경유 조성물 |
| AU2013238990A AU2013238990B2 (en) | 2012-03-30 | 2013-02-20 | Gas oil composition |
| EP13770302.1A EP2832829B1 (en) | 2012-03-30 | 2013-02-20 | Gas oil composition |
| JP2014507363A JP6042874B2 (ja) | 2012-03-30 | 2013-02-20 | 軽油組成物 |
| RU2014137429A RU2630225C1 (ru) | 2012-03-30 | 2013-02-20 | Композиция газойля |
| CN201380017657.2A CN104220567B (zh) | 2012-03-30 | 2013-02-20 | 瓦斯油组合物 |
| US14/389,597 US20150052803A1 (en) | 2012-03-30 | 2013-02-20 | Gas oil composition |
| ZA2014/06836A ZA201406836B (en) | 2012-03-30 | 2014-09-18 | Gas oil composition |
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| US7955495B2 (en) * | 2008-07-31 | 2011-06-07 | Chevron U.S.A. Inc. | Composition of middle distillate |
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| JP2002526637A (ja) * | 1998-10-05 | 2002-08-20 | セイソル テクノロジー (プロプライエタリー) リミテッド | 中間留出物の生産方法及びその方法によって生産された中間留出物 |
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| AU2013238990B2 (en) | 2017-05-18 |
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| AU2013238990A1 (en) | 2014-10-02 |
| ZA201406836B (en) | 2015-11-25 |
| KR20150001788A (ko) | 2015-01-06 |
| CN104220567A (zh) | 2014-12-17 |
| US20150052803A1 (en) | 2015-02-26 |
| EP2832829A4 (en) | 2015-09-02 |
| RU2630225C1 (ru) | 2017-09-06 |
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