JP2005247972A - Fuel oil composition - Google Patents
Fuel oil composition Download PDFInfo
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- JP2005247972A JP2005247972A JP2004059032A JP2004059032A JP2005247972A JP 2005247972 A JP2005247972 A JP 2005247972A JP 2004059032 A JP2004059032 A JP 2004059032A JP 2004059032 A JP2004059032 A JP 2004059032A JP 2005247972 A JP2005247972 A JP 2005247972A
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- oil
- kerosene
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- fluidity
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- 239000000295 fuel oil Substances 0.000 title claims abstract description 49
- 239000000203 mixture Substances 0.000 title claims abstract description 18
- 239000003350 kerosene Substances 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 239000002199 base oil Substances 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000009472 formulation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 239000010779 crude oil Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000010998 test method Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 6
- 238000004821 distillation Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 239000010763 heavy fuel oil Substances 0.000 description 3
- 239000003209 petroleum derivative Substances 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000004231 fluid catalytic cracking Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- -1 alkenyl succinic acid amide Chemical compound 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008264 cloud Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Abstract
Description
本発明は、低温下で優れた流動性を有する燃料油組成物に関する。 The present invention relates to a fuel oil composition having excellent fluidity at low temperatures.
Ａ重油は、一般的に農業用ハウス加温機、ビル等の暖房、小型内航船や漁船の燃料、建設機械等に用いられるが、冬季においては、ワックス分の析出や流動性の低下等の現象が発生し、問題となる場合がある。例えば、Ａ重油中に含まれるワックス析出により、夾雑物阻止用のろ過器中のフィルターを閉塞させたり、さらに低温下では、Ａ重油が流動性を失い、燃料ラインそのものを閉塞させると言ったような事例が発生する場合がある。
従来、Ａ重油の低温下における流動性を改善する方法として、残油を添加する方法がある。例えば、特許文献１（特公平３−５４３８号公報）には、アスファルテン含有量が６．０質量％以上あるいは残留炭素分が９．５質量％以上である残渣を添加剤としてＡ重油基油に対して０．５〜２．０容量％添加することにより低温流動性が改良されることが記載されている。また、低温下における流動性を改善するその他の方法として、Ａ重油に流動性向上剤を添加する方法がある。流動性向上剤は、低温下で析出する燃料油中のワックスに作用し、ワックスの結晶が巨大化するのを防いで結晶を微小なものにとどめておき、流動性を改良しようとするものである。
A heavy oil is generally used for agricultural house heaters, heating of buildings, etc., fuel for small coastal vessels and fishing boats, construction machinery, etc. In the winter season, precipitation of wax, decrease in fluidity, etc. Phenomenon occurs and may become a problem. For example, the precipitation of wax contained in the heavy oil A causes the filter in the filter for preventing foreign substances to be blocked, or even at low temperatures, the heavy fuel oil A loses fluidity and closes the fuel line itself. Case may occur.
Conventionally, there is a method of adding residual oil as a method of improving the fluidity of A heavy oil at a low temperature. For example, in Patent Document 1 (Japanese Patent Publication No. 3-5438), a residue having an asphaltene content of 6.0% by mass or more or a residual carbon content of 9.5% by mass or more is added to A heavy oil base oil as an additive. On the other hand, it is described that low-temperature fluidity is improved by adding 0.5 to 2.0% by volume. As another method for improving the fluidity at low temperatures, there is a method of adding a fluidity improver to A heavy oil. The fluidity improver acts on the wax in the fuel oil that precipitates at a low temperature, prevents the wax crystals from becoming enormous, keeps the crystals small, and improves the fluidity. is there.
Ａ重油には、上記の他に、山岳地帯のような寒冷地や低温流動性をより改善させた燃料油を要求する需要者に対して一般的なＡ重油よりも低温流動性能を更に改善させた製品も存在する。ＪＩＳ規格において、例えばＡ重油の流動点は５℃以下（寒候用のものは０℃以下）であるが、低温流動性を更に改善させた製品の中には、流動点が−１０℃程度のものが要求される場合もある。これら低温流動性を更に改善させた製品は、Ａ重油の総生産量に比べると生産量は少ないものの、低温流動性能に対して厳しい要求が求められるため、生産する場合には灯油を配合する場合もある。 In addition to the above, A heavy oil can be further improved in cold flow performance compared to general A heavy oil for consumers requiring cold areas such as mountainous areas and fuel oil with improved low temperature fluidity. There are also products. In JIS standards, for example, the pour point of heavy oil A is 5 ° C or lower (0 ° C or lower for cold weather). Sometimes things are required. These products with further improved low-temperature fluidity produce less than the total production of heavy oil A, but they require strict requirements for low-temperature flow performance. There is also.
しかし、灯油はＡ重油の低温流動性を改善させる効果があるが、ＪＩＳ規格による灯油の引火点は４０℃以上、Ａ重油が６０℃以上のため、Ａ重油に添加する灯油の配合量には限界がある。つまり低温流動性を更に改善させた製品を得るために、灯油を配合して低温流動性を改善させても、引火点の規格により灯油の配合量が制限される場合が発生する。さらに、低温流動性を更に改善させた製品と一般的なＡ重油を区別するため、専用のタンクを設ける必要がある。低温流動性を更に改善させた燃料油の種類が複数あり、要求される性状が異なる場合は、複数の専用タンクが必要となり、管理が煩雑になると共に、これらタンクに対するメンテナンスコスト等の増大も発生する。
本発明の目的は、引火点の規格から発生する灯油配合量の制限が緩和されて低温流動性が改善された燃料油組成物を提供することにある。
本発明の他の目的は、効率的、且つ容易に生産することができると共に、生産時に必要となるタンク数を削減できる燃料油組成物を提供することにある。
An object of the present invention is to provide a fuel oil composition in which the restriction of the amount of kerosene generated from the flash point specification is relaxed and the low temperature fluidity is improved.
Another object of the present invention is to provide a fuel oil composition that can be produced efficiently and easily and can reduce the number of tanks required during production.
本発明者が鋭意研究した結果、特定の引火点を有する灯油をＡ重油基油に特定量添加することで、流動性が改善された燃料油組成物が容易に提供できることを見出し、本発明を完成するに至った。
すなわち、本発明によれば、Ａ重油基油に対し、引火点が５５〜８０℃の灯油が１０〜５０容量％混合されており、製品中の１０％残留炭素分が０．２質量％以上、引火点が６０℃以上であり、流動性向上剤を１００〜１０００容量ｐｐｍとなるように添加してなることを特徴とする燃料油組成物が提供される。
As a result of intensive studies by the present inventors, it has been found that a fuel oil composition with improved fluidity can be easily provided by adding a specific amount of kerosene having a specific flash point to A heavy oil base oil. It came to be completed.
That is, according to the present invention, 10 to 50% by volume of kerosene having a flash point of 55 to 80 ° C. is mixed with A heavy oil base oil, and the 10% residual carbon content in the product is 0.2% by mass or more. There is provided a fuel oil composition characterized by having a flash point of 60 ° C. or higher and adding a fluidity improver to 100 to 1000 ppm by volume.
本発明の燃料油組成物は、引火点を調整した灯油を特定割合で通常のＡ重油基油に配合して調製され、低温流動性能に優れる。しかも、本発明の燃料油組成物は、Ａ重油基油と灯油とを配管内で混合する簡便な方法で調製することができ、製品として供給が可能なので、複数の燃料油毎の専用タンクを持つことなく、効率的、且つ容易に生産することができる。 The fuel oil composition of the present invention is prepared by blending kerosene with an adjusted flash point with a normal A heavy oil base oil at a specific ratio, and is excellent in low-temperature fluidity. In addition, the fuel oil composition of the present invention can be prepared by a simple method of mixing A heavy oil base oil and kerosene in a pipe and can be supplied as a product. Without having it, it can be produced efficiently and easily.
以下、本発明を詳細に説明する。
本発明の低温流動性を向上させた燃料油組成物は、引火点が５５〜８０℃の灯油をＡ重油基油に１０〜５０容量％添加して調製されたものである。本発明で用いられる灯油は、常圧蒸留装置で原油を常圧において蒸留して得られる沸点範囲１７０〜２５０℃を有する留分であり、脱硫処理されていてもよい。灯油のＪＩＳ規格における引火点は４０℃以上であるが、本発明で使用する灯油の引火点は５５〜８０℃が好ましく、６０〜７５℃が更に好ましい。添加する灯油の引火点が５５℃未満では、製品Ａ重油の引火点が６０℃以上であることを満足しない場合があり、８０℃を越えると、灯油の配合量が増加し、引火点以外の性状を満足しない場合がある。
Ａ重油基油に対する灯油の添加割合は、１０〜５０容量％が好ましく、２０〜４０容量％が更に好ましい。灯油の添加量が１０容量％未満では製品Ａ重油の低温流動性能が十分に改善されず、５０容量％を越えるとＡ重油に占める灯油留分が多く、製造コストが増加する。
Hereinafter, the present invention will be described in detail.
The fuel oil composition having improved low temperature fluidity according to the present invention is prepared by adding 10 to 50% by volume of kerosene having a flash point of 55 to 80 ° C. to A heavy oil base oil. Kerosene used in the present invention is a fraction having a boiling range of 170 to 250 ° C. obtained by distilling crude oil at atmospheric pressure with an atmospheric distillation apparatus, and may be desulfurized. The flash point of kerosene in the JIS standard is 40 ° C. or higher, but the flash point of kerosene used in the present invention is preferably 55 to 80 ° C., more preferably 60 to 75 ° C. If the flash point of kerosene to be added is less than 55 ° C, it may not be satisfied that the flash point of product A heavy oil is 60 ° C or higher. If it exceeds 80 ° C, the blending amount of kerosene will increase, The property may not be satisfied.
The ratio of kerosene to A heavy oil base oil is preferably 10 to 50% by volume, more preferably 20 to 40% by volume. If the amount of kerosene added is less than 10% by volume, the low-temperature flow performance of the product A heavy oil is not sufficiently improved, and if it exceeds 50% by volume, the kerosene fraction occupies the A heavy oil and the production cost increases.
本発明におけるＡ重油基油は、軽質直留軽油、重質直留軽油、軽質脱硫軽油、接触分解軽油、直接脱硫軽油、間接脱硫軽油等を任意の割合で配合したものである。ここで、軽質直留軽油、重質直留軽油は、常圧蒸留装置で原油を常圧において蒸留して得られる軽質または重質な軽油である。軽質脱硫軽油は、軽質直留軽油を水素化脱硫装置で脱硫して得られる軽油である。接触分解軽油は、流動接触分解装置から得られる軽油であり、分解ガソリン留分より高沸点な留分である。直接脱硫軽油は、直接脱硫装置で常圧残油を脱硫して得られる軽油である。間接脱硫軽油は、間接脱硫装置で減圧軽油を脱硫して得られる軽油である。 The A heavy oil base oil in the present invention is a blend of light straight-run light oil, heavy straight-run light oil, light desulfurized light oil, catalytic cracked light oil, direct desulfurized light oil, indirect desulfurized light oil and the like in an arbitrary ratio. Here, the light straight-run gas oil and the heavy straight-run gas oil are light or heavy light oils obtained by distilling crude oil at normal pressure with an atmospheric distillation apparatus. A light desulfurized light oil is a light oil obtained by desulfurizing a light straight-run light oil with a hydrodesulfurization apparatus. Catalytic cracking gas oil is a gas oil obtained from a fluid catalytic cracking apparatus, and is a fraction having a higher boiling point than the cracked gasoline fraction. Direct desulfurized light oil is light oil obtained by desulfurizing atmospheric residual oil with a direct desulfurization apparatus. Indirect desulfurized light oil is light oil obtained by desulfurizing vacuum gas oil with an indirect desulfurization apparatus.
本発明におけるＡ重油製品中の１０％残留炭素分は、０．２質量％以上であり、好ましくは０．２〜５．０質量％、更に好ましくは０．２〜１．０質量％である。１０％残留炭素分が０．２質量％未満の場合、「１０％残油の残留炭素分０．２質量％以上」というＡ重油の免税条件を満たさなくなる。また、１０％残留炭素分が上記で特定する好ましい範囲内であれば、スラッジの発生するおそれが殆どない。なお、１０％残留炭素分とは、試料を蒸留して９０％までの留出油を除き、１０％残油中に含有する残留炭素量を示し、ＪＩＳ Ｋ ２２７０「原油及び石油製品−残留炭素分試験方法」で測定されるものである。 The 10% residual carbon content in the A heavy oil product in the present invention is 0.2% by mass or more, preferably 0.2 to 5.0% by mass, more preferably 0.2 to 1.0% by mass. . When the 10% residual carbon content is less than 0.2% by mass, the duty-free condition of heavy fuel oil A “residual carbon content of 10% residual oil is 0.2% by mass or more” is not satisfied. Moreover, if the 10% residual carbon content is within the preferable range specified above, there is almost no risk of sludge generation. The 10% residual carbon content refers to the amount of residual carbon contained in 10% residual oil, excluding distillate up to 90% by distilling the sample. JIS K 2270 “Crude oil and petroleum products—residual carbon It is measured by the “minute test method”.
Ａ重油製品中の１０％残留炭素分が０．２質量％以上となるようにするために、Ａ重油基油に、常圧残油、減圧残油、脱硫残油、スラリーオイルおよびエキストラクトから選ばれる１種あるいは２種以上の炭化水素を添加しても良い。ここで、常圧残油は、常圧蒸留装置で原油を常圧において蒸留して得られる残油である。減圧残油は、減圧蒸留装置で常圧残油を減圧下で蒸留して得られる残油である。脱硫残油は、直接脱硫装置で常圧残油を処理して得られる残油である。スラリーオイルは、流動接触分解装置から得られる残油であり、沸点が３５０℃以上のものである。エキストラクトは、潤滑油原料用減圧蒸留装置からの留分を、溶剤抽出法により抽出分離したもののうち潤滑油に適さない芳香族成分である。これらの炭化水素油は、２種類以上を付加してもよい。 In order to ensure that the 10% residual carbon content in the A heavy oil product is 0.2% by mass or more, the heavy oil base oil is changed from atmospheric residual oil, vacuum residual oil, desulfurized residual oil, slurry oil and extract. One or more selected hydrocarbons may be added. Here, the atmospheric residual oil is a residual oil obtained by distilling crude oil at atmospheric pressure with an atmospheric distillation apparatus. The vacuum residue is a residue obtained by distilling atmospheric residue under reduced pressure using a vacuum distillation apparatus. The desulfurized residual oil is a residual oil obtained by treating atmospheric residual oil with a direct desulfurization apparatus. Slurry oil is a residual oil obtained from a fluid catalytic cracking apparatus and has a boiling point of 350 ° C. or higher. The extract is an aromatic component that is not suitable for lubricating oil among the fractions extracted from the reduced pressure distillation apparatus for lubricating oil raw material by solvent extraction. Two or more kinds of these hydrocarbon oils may be added.
本発明に使用する低温流動性向上剤は、種々の低温流動性向上剤が使用でき、例えばアルケニルコハク酸アミド、エチレン−酢酸ビニル共重合体、エチレン−アルキルアクリレート共重合体などの共重合系ポリマー、塩素化ポリエチレン、ポリアルキルアクリレートなどのポリマーなどが挙げられ、好ましくはエチレン−酢酸ビニル共重合体が挙げられる。これらの流動性向上剤は、１種単独で用いてもよいし、２種以上を組合せて用いてもよい。
流動性向上剤の添加量は、１００〜１０００容量ｐｐｍ、好ましくは１００〜５００容量ｐｐｍ、更に好ましくは１００〜４００容量ｐｐｍである。１００容量ｐｐｍより添加量が少ない場合、流動性向上剤の効果が現れにくくなる。１０００容量ｐｐｍを超えて添加してもコストアップに見合うだけの効果は得られない。
As the low temperature fluidity improver used in the present invention, various low temperature fluidity improvers can be used. For example, copolymer polymers such as alkenyl succinic acid amide, ethylene-vinyl acetate copolymer, ethylene-alkyl acrylate copolymer, etc. , Polymers such as chlorinated polyethylene and polyalkyl acrylate, and the like, preferably ethylene-vinyl acetate copolymer. These fluidity improvers may be used individually by 1 type, and may be used in combination of 2 or more type.
The addition amount of the fluidity improver is 100 to 1000 ppm by volume, preferably 100 to 500 ppm by volume, and more preferably 100 to 400 ppm by volume. When the amount added is less than 100 ppm by volume, the effect of the fluidity improver is less likely to appear. Even if added in excess of 1000 ppm by volume, an effect sufficient for cost increase cannot be obtained.
本発明の低温流動性燃料油組成物は、石油留分燃料油に通常添加される防錆剤、酸化防止剤、防食剤、静電気防止剤などを添加しても良い。 The low-temperature fluid fuel oil composition of the present invention may contain a rust inhibitor, an antioxidant, an anticorrosive agent, an antistatic agent and the like that are usually added to petroleum distillate fuel oils.
次に、本発明を実施例及び比較例により更に具体的に説明する。なお、本発明は、これらの例により何ら制限されるものではない。実施例及び比較例において使用したＡ重油基油と灯油の性状を表１に示した。なお、実施例及び比較例において、各性状はそれぞれ以下の方法により測定、評価した。 Next, the present invention will be described more specifically with reference to examples and comparative examples. In addition, this invention is not restrict | limited at all by these examples. Table 1 shows the properties of A heavy oil base oil and kerosene used in Examples and Comparative Examples. In Examples and Comparative Examples, each property was measured and evaluated by the following methods.
（１）密度（１５℃）：ＪＩＳ Ｋ ２２４９「原油及び石油製品−密度試験方法及び密度・質量・容量換算表」により測定した。
（２）硫黄分：ＪＩＳ Ｋ ２５４１「原油及び石油製品−硫黄分試験方法」により測定した。
（３）動粘度（５０℃）：ＪＩＳ Ｋ ２２８３「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」により測定した。
（４）流動点：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」により測定した。
（５）引火点：ＪＩＳ Ｋ ２２６５「原油及び石油製品−引火点試験方法」により測定した。
（６）１０％残留炭素分：ＪＩＳ Ｋ ２２７０「原油及び石油製品−残留炭素分試験方法」により測定した。
(1) Density (15 ° C.): Measured according to JIS K 2249 “Crude oil and petroleum products—Density test method and density / mass / capacity conversion table”.
(2) Sulfur content: Measured according to JIS K 2541 “Crude oil and petroleum products—Sulfur content test method”.
(3) Kinematic viscosity (50 ° C.): Measured according to JIS K 2283 “Crude oil and petroleum products—Kinematic viscosity test method and viscosity index calculation method”.
(4) Pour point: Measured according to JIS K 2269, “Pour point of crude oil and petroleum products and cloud point test method for petroleum products”.
(5) Flash point: Measured according to JIS K 2265 “Crude oil and petroleum products—Flash point test method”.
(6) 10% residual carbon content: Measured according to JIS K 2270 “Crude oil and petroleum products—Test method for residual carbon content”.
実施例１
表１に記載のＡ重油基油に、表１に記載の灯油を２０容量％、流動性性向上剤を３００ｐｐｍ配合して得られた燃料組成物の性状を表２に示す。なお、流動性向上剤としては、エチレン−酢酸ビニル共重合体を用いた。
Example 1
Table 2 shows the properties of the fuel composition obtained by blending 20% by volume of kerosene described in Table 1 and 300 ppm of the fluidity improver with the A heavy oil base oil described in Table 1. An ethylene-vinyl acetate copolymer was used as the fluidity improver.
実施例２〜３、比較例１〜３
実施例１において、灯油の配合量を表２に示されるように変更した以外は、実施例１と同様にして、それぞれ燃料組成物を得た。その性状を表２に示す。
Examples 2-3 and Comparative Examples 1-3
In Example 1, fuel compositions were obtained in the same manner as in Example 1 except that the blending amount of kerosene was changed as shown in Table 2. The properties are shown in Table 2.
表２に示される結果から、以下のことが明らかである。
Ａ重油基油に本発明で特定された灯油を特定された範囲の量混合して得られる燃料油組成物（実施例１〜３）は、低温における流動性に優れることが分かる。一方、灯油の配合が過小の比較例１の場合、低温における流動性に劣る。灯油の配合が過剰の比較例２の場合、低温における流動性に優れるが、「１０％残油の残留炭素分０．２質量％以上」というＡ重油の免税条件を満たさなくなる。流動性向上剤を添加しない比較例３の場合、低温における流動性に劣る。
From the results shown in Table 2, the following is clear.
It can be seen that the fuel oil compositions (Examples 1 to 3) obtained by mixing the kerosene specified in the present invention with the A heavy oil base oil in the specified range are excellent in fluidity at low temperatures. On the other hand, in the case of Comparative Example 1 in which the blending of kerosene is too small, the fluidity at low temperatures is poor. In the case of Comparative Example 2 in which kerosene is excessively mixed, the fluidity at low temperature is excellent, but the duty-free condition for heavy fuel oil A, “residual carbon content of 10% residual oil is 0.2 mass% or more”, is not satisfied. In the case of Comparative Example 3 in which no fluidity improver is added, the fluidity at low temperatures is poor.
Claims (1)
Kerosene with a flash point of 55-80 ° C. is mixed with A heavy oil base oil at 10-50% by volume, 10% residual carbon content in the product is 0.2% by mass or more, and flash point is 60 ° C. or more. A fuel oil composition, wherein a fluidity improver is added to 100 to 1000 ppm by volume.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212579A (en) * | 1999-01-21 | 2000-08-02 | Idemitsu Kosan Co Ltd | Production of lamp oil |
| JP2002265963A (en) * | 2001-03-14 | 2002-09-18 | Idemitsu Kosan Co Ltd | Fuel oil composition |
| JP2005225922A (en) * | 2004-02-10 | 2005-08-25 | Nippon Oil Corp | A-type heavy oil composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000212579A (en) * | 1999-01-21 | 2000-08-02 | Idemitsu Kosan Co Ltd | Production of lamp oil |
| JP2002265963A (en) * | 2001-03-14 | 2002-09-18 | Idemitsu Kosan Co Ltd | Fuel oil composition |
| JP2005225922A (en) * | 2004-02-10 | 2005-08-25 | Nippon Oil Corp | A-type heavy oil composition |
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