JP4454469B2

JP4454469B2 - Fuel oil composition

Info

Publication number: JP4454469B2
Application number: JP2004320549A
Authority: JP
Inventors: 晴也田中
Original assignee: Cosmo Oil Co Ltd
Current assignee: Cosmo Oil Co Ltd
Priority date: 2004-11-04
Filing date: 2004-11-04
Publication date: 2010-04-21
Anticipated expiration: 2024-11-04
Also published as: JP2006131710A

Description

本発明は、主に家庭用石油ストーブに使用する燃料油組成物に関するものであり、燃焼性が良好で煤等の発生が少なく、さらには安定した燃焼状態を維持できる燃料油組成物を提供するものである。 The present invention relates to a fuel oil composition mainly used for a domestic petroleum stove, and provides a fuel oil composition that has good combustibility, little soot generation, and can maintain a stable combustion state. Is.

現在石油ストーブに使用されている灯油の種類と規格は、日本工業規格（ＪＩＳＫ２２０３）に示されており、その中でも１号灯油は、家庭用の暖房機器等に広く用いられている。灯油留分は主に、原油を常圧蒸留により所定の蒸留性状となるように分留することで得られる。次いで水素化脱硫装置により硫黄分が所定量以下となるように水素化精製される。さらに、灯油製造過程において、ストリッパにより軽質分を蒸発させることで引火点が４０℃以上となるように調整される。 The types and standards of kerosene currently used in oil stoves are shown in Japanese Industrial Standards (JIS K 2203). Among them, No. 1 kerosene is widely used for household heating equipment and the like. The kerosene fraction is mainly obtained by fractionating crude oil by atmospheric distillation so as to have a predetermined distillation property. Next, hydrorefining is performed by a hydrodesulfurization apparatus so that the sulfur content becomes a predetermined amount or less. Further, in the kerosene production process, the flash point is adjusted to 40 ° C. or higher by evaporating light components with a stripper.

上記のように石油ストーブに使用される灯油は、石油を精製することで製造されるが、芳香族分や微量に含まれる硫黄分に由来する臭気等があり、また芳香族分を多く含む灯油を石油ストーブ等に使用した場合、主に着・消火時において煤が発生すること等が懸念される。
パラフィン系の燃料油を使用すれば臭気は少なく、また燃焼性が良好であることから煤発生の恐れ等は低減できるが（例えば、特許文献１、特許文献２参照）、燃焼性が良すぎることにより、従来灯油を使用することを基準として設計されている現行の燃焼機器に対しては安定した燃焼が保てないという懸念が考えられる。
また、沸点、芳香族炭化水素含有量、硫黄分等を規定することで、灯油自体の臭気が少なく、石油ストーブ使用時の点火・消火時の臭気も少なく、取扱いにも優れた高性能灯油が提案されている（例えば、特許文献３参照）。しかしながら、この高性能灯油は、燃焼性について改善の余地がある。 Kerosene used in petroleum stoves as described above is manufactured by refining petroleum, but it has odors derived from aromatics and sulfur contained in trace amounts, and kerosene containing a large amount of aromatics. When oil is used in an oil stove, etc., there is a concern that soot will be generated mainly during ignition and fire extinguishing.
If paraffinic fuel oil is used, the odor is low and the flammability is good, so the risk of soot generation can be reduced (for example, see Patent Document 1 and Patent Document 2), but the flammability is too good. Therefore, there is a concern that stable combustion cannot be maintained for the current combustion equipment designed based on the conventional use of kerosene.
In addition, by specifying the boiling point, aromatic hydrocarbon content, sulfur content, etc., high-performance kerosene with low kerosene itself, low odor during ignition / extinguishing when using a petroleum stove, and excellent handling It has been proposed (see, for example, Patent Document 3). However, this high performance kerosene has room for improvement in combustibility.

特開２００４−１８２８５４号公報JP 2004-182854 A 特開昭６３−１５０３８０号公報JP-A-63-150380 特公平７−１０３３８４号公報Japanese Examined Patent Publication No. 7-103384

本発明は、上記従来技術に鑑みてなされたものであり、具体的には、燃焼性が良好で燃焼時における煤発生が少なく、さらに現行タイプの家庭用燃焼機器（主に石油ストーブ）に使用しても安定した燃焼状態を維持できる燃料油組成物を提供することを目的とする。 The present invention has been made in view of the above prior art. Specifically, the present invention has good combustibility, little soot is generated during combustion, and is used for current type household combustion equipment (mainly oil stoves). Even so, an object is to provide a fuel oil composition capable of maintaining a stable combustion state.

本発明者は、上記課題を解決するために鋭意検討を行った結果、灯油の組成及び蒸留性状を適正化することで、燃焼性が良好で煤の発生等が少なく、かつ石油ストーブに使用した際に安定した燃焼を保つことが可能になるという知見を得て本発明の燃料油組成物を完成するに至った。すなわち本発明は、以下に示す特徴を有する燃料油組成物を提供するものである。 As a result of intensive studies to solve the above-mentioned problems, the present inventor has optimized the composition of kerosene and the distillation properties, so that the combustibility is good, the occurrence of soot is small, and the oil stove is used. At this time, the knowledge that it is possible to maintain stable combustion has been obtained, and the fuel oil composition of the present invention has been completed. That is, the present invention provides a fuel oil composition having the following characteristics.

（１）蒸留性状が初留点１３５〜１７０℃、５０％留出温度１６５〜２２０℃、７０％留出温度１７０〜２４０℃、９０％留出温度１８０〜２６５℃、９５％留出温度１８５〜２７０℃であるパラフィン系燃料油組成物（Ａ）と、
蒸留性状が初留点１３５〜１７０℃、５０％留出温度１７５〜２２０℃、７０％留出温度１８５〜２４０℃、９０％留出温度２２０〜２６５℃、９５％留出温度２５５〜２７０℃であり、硫黄分が１０質量ｐｐｍ以下であり、飽和分７５〜９８容量％、芳香族分２〜２５容量％の組成から成る燃料油組成物（Ｂ）とを含有する燃料油組成物であって、
蒸留性状が初留点１３５〜１７０℃、５０％留出温度１６５〜２２０℃、７０％留出温度１７０〜２４０℃、９０％留出温度２１５〜２６５℃、９５％留出温度２３０〜２７０℃、硫黄分が１０質量ｐｐｍ以下の性状を有し、飽和分８７〜９８容量％、芳香族分２〜１３容量％の組成から成り、燃料油組成物中のパラフィン類の割合が４５〜９５容量％であり、該パラフィン類中のイソパラフィン割合が１０容量％以上であり、燃料油組成物中の２環以上の多環芳香族類の割合が０．１〜１．５容量％であり、残余が一環芳香族類であり、該一環芳香族類の７０容量％以上がアルキルベンゼン類である燃料油組成物。 (1) Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 165-220 ° C, 70% distillation temperature 170-240 ° C, 90% distillation temperature 180-265 ° C, 95% distillation temperature 185 A paraffinic fuel oil composition (A) that is ~ 270 ° C;
Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 175-220 ° C, 70% distillation temperature 185-240 ° C, 90% distillation temperature 220-265 ° C, 95% distillation temperature 255-270 ° C. A fuel oil composition containing a fuel oil composition (B) having a sulfur content of 10 mass ppm or less, a saturated content of 75 to 98 vol%, and an aromatic content of 2 to 25 vol%. And
Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 165-220 ° C, 70% distillation temperature 170-240 ° C, 90% distillation temperature 215-265 ° C, 95% distillation temperature 230-270 ° C. , Having a property of sulfur content of 10 ppm by mass or less, consisting of a composition having a saturation content of 87 to 98% by volume and an aromatic content of 2 to 13 % by volume , and the ratio of paraffins in the fuel oil composition is 45 to 95% by volume %, The ratio of isoparaffin in the paraffins is 10% by volume or more, the ratio of polycyclic aromatics of 2 or more rings in the fuel oil composition is 0.1 to 1.5% by volume , and the balance Is a part aromatics, and a fuel oil composition in which 70% by volume or more of the part aromatics is alkylbenzenes.

本発明による燃料油組成物は、煙点が高くて燃焼性が良好で煤の発生等がかなり抑えられることが推測される。さらに、石油ストーブに使用しても安定燃焼が可能で消火性にも優れる。したがって、本発明による燃料油組成物は実用上非常に有用である。 It is presumed that the fuel oil composition according to the present invention has a high smoke point, good combustibility, and the occurrence of soot is considerably suppressed. Furthermore, stable combustion is possible even when used in oil stoves, and fire extinguishing properties are also excellent. Therefore, the fuel oil composition according to the present invention is very useful in practice.

以下に本発明の詳細を記載する。
本発明における燃料油組成物の蒸留性状は、初留点１３５〜１７０℃、５０％留出温度１６５〜２２０℃、７０％留出温度１７０〜２４０℃、９０％留出温度２１５〜２６５℃、９５％留出温度２３０〜２７０℃である。初留点が１７０℃より大きい場合、着火し難くなる可能性があり好ましくない。初留点が１３５℃より低い場合、引火点が低くなりＪＩＳＫ２２０３で定められる灯油の引火点規格値である４０℃を下回る可能性があり好ましくない。また５０％留出温度が２２０℃、７０％留出温度が２４０℃、９０％留出温度が２６５℃、９５％留出温度が２７０℃より大きい場合、着火し難く定常燃焼に至るまでに時間がかかる可能性があり、好ましくない。また５０％留出温度が１６５℃、７０％留出温度が１７０℃、９０％留出温度が２１５℃、９５％留出温度が２３０℃より低い場合、芯式・放射形石油ストーブ使用時において、炎を燃焼筒の上部から出さずに、燃焼筒を赤熱した状態に保つという安定した燃焼状態が保てず、また消火の際に鎮火し難くなる可能性があり、好ましくない。
また、本発明の燃料油組成物に含まれる硫黄分は１０質量ｐｐｍ以下である。硫黄分が１０質量ｐｐｍより多い場合、硫黄分に由来する臭気等が強くなる可能性があり、好ましくない。
なお、本発明における、蒸留性状はＪＩＳＫ２２５４の常圧法蒸留試験、硫黄分はＪＩＳＫ２５４１の微量電量滴定式酸化法により、それぞれ測定される。 Details of the present invention will be described below.
The distillation properties of the fuel oil composition in the present invention are as follows: initial boiling point 135-170 ° C, 50% distillation temperature 165-220 ° C, 70% distillation temperature 170-240 ° C, 90% distillation temperature 215-265 ° C, The 95% distillation temperature is 230 to 270 ° C. When the initial boiling point is higher than 170 ° C., it is difficult to ignite, which is not preferable. When the initial boiling point is lower than 135 ° C., the flash point becomes lower, which may be less than 40 ° C., which is the flash point standard value of kerosene defined in JIS K2203. Also, when the 50% distillation temperature is 220 ° C, the 70% distillation temperature is 240 ° C, the 90% distillation temperature is 265 ° C, and the 95% distillation temperature is greater than 270 ° C, it is difficult to ignite and it takes time to reach steady combustion. This is not preferable. When the 50% distillation temperature is 165 ° C, the 70% distillation temperature is 170 ° C, the 90% distillation temperature is 215 ° C, and the 95% distillation temperature is lower than 230 ° C, when using a core type / radial petroleum stove The stable combustion state of keeping the combustion tube in a red hot state without letting out the flame from the upper part of the combustion tube cannot be maintained, and it is difficult to extinguish the fire when extinguishing.
Moreover, the sulfur content contained in the fuel oil composition of the present invention is 10 mass ppm or less. When there is more sulfur content than 10 mass ppm, the odor etc. which originate in a sulfur content may become strong, and it is not preferable.
In the present invention, the distillation properties are measured by an atmospheric pressure distillation test according to JIS K2254, and the sulfur content is measured by a microcoulometric titration method according to JIS K2541.

本発明の燃料油組成物の組成は、飽和分７５〜９８容量％、芳香族分２〜２５容量％である。芳香族分が２５容量％を超え、飽和分が７５容量％未満の場合、煙点が低く燃焼性が不良で煤の発生につながる可能性があり好ましくない。燃焼性の面からは芳香族分は極力少ない方が良いが、燃焼性が良すぎる場合、現行タイプの家庭用燃焼機器（主に石油ストーブ）に使用した場合、安定燃焼を保ことができない可能性があるため、芳香族分は２容量％以上であることが好ましい。なおここでの飽和分及び芳香族分の含有割合は、ＪＰＩ−５Ｓ−４９−９７「石油製品−炭化水素タイプ試験方法−高速液体クロマトグラフ法」に基づいて求められる。 The composition of the fuel oil composition of the present invention has a saturation content of 75 to 98% by volume and an aromatic content of 2 to 25% by volume. When the aromatic content exceeds 25% by volume and the saturated content is less than 75% by volume, the smoke point is low and the flammability is poor, which may lead to generation of soot. In terms of flammability, it is better to have as little aromatic content as possible. However, if the flammability is too good, stable combustion may not be maintained when used in current-type household combustion equipment (mainly oil stoves). Therefore, the aromatic content is preferably 2% by volume or more. In addition, the content rate of a saturated part and an aromatic part here is calculated | required based on JPI-5S-49-97 "petroleum product-hydrocarbon type test method-high performance liquid chromatograph method".

本発明の燃料油組成物において、パラフィン類含有割合は、上記飽和分７５〜９８容量％の内の４５〜９５容量％であり、この飽和分７５〜９８容量％の内の残余の３〜３０容量％はナフテン類である。パラフィン類の好ましい含有割合は４５〜９２容量％、さらに好ましい含有割合は４７〜９０容量％である。パラフィン類含有割合が４５容量％未満の場合、煙点が低く燃焼性が不良で煤の発生につながる可能性があり好ましくない。燃焼性の面からは飽和分中のパラフィン類割合は多い方が良いが、燃焼性が良すぎる場合、現行タイプの家庭用燃焼機器（主に石油ストーブ）に使用した場合、安定燃焼を保ことができない可能性があるため、パラフィン類含有割合は９５容量％以下であることが好ましい。
なおここでのパラフィン類含有割合は、高速液体クロマトグラフ法（ＨＰＬＣ）により燃料油組成物を芳香族分と飽和分に分画採取した後、飽和分をガスクロマトグラフ法−質量分析法（ＧＣ−ＭＳ）で分析し、ＡＳＴＭＤ２７８６に従って解析を行い飽和分中のアルカン類割合を算出し、ここで得られた割合を前述の方法で求めた飽和分割合に乗ずることで求められる。 In the fuel oil composition of the present invention, the content of paraffins is 45 to 95% by volume of the above-described saturation content of 75 to 98% by volume, and the remaining 3 to 30% of the saturation content of 75 to 98% by volume. The volume% is naphthenes. The preferable content rate of paraffins is 45-92 volume%, and a more preferable content rate is 47-90 volume%. If the content of paraffins is less than 45% by volume, the smoke point is low and the flammability is poor, which may lead to the generation of soot. From the standpoint of flammability, it is better to have a high percentage of paraffins in the saturated content, but if the flammability is too good, stable combustion should be maintained when used in current types of household combustion equipment (mainly oil stoves). Therefore, it is preferable that the paraffin content is 95% by volume or less.
Here, the content of paraffins is determined by gas chromatography-mass spectrometry (GC-) after the fuel oil composition is fractionated into an aromatic component and a saturated component by high performance liquid chromatography (HPLC). MS), the analysis is performed according to ASTM D 2786, the proportion of alkanes in the saturated content is calculated, and the proportion obtained here is obtained by multiplying the saturated proportion obtained by the above method.

本発明の燃料油組成物の、パラフィン類中のイソパラフィン割合は、１０容量％以上である。パラフィン類中のイソパラフィンが多い方が石油ストーブ使用時における安定燃焼の面で好ましい。ここで試料中のイソパラフィン割合は、まず上記方法で求めたパラフィン類割合から、ガスクロマトグラフ法（ＧＣ）により求めた試料中のｎ−パラフィン割合を差し引くことでイソパラフィン含有割合を求め、イソパラフィン割合とパラフィン類割合の比から求められる。 The isoparaffin ratio in the paraffins of the fuel oil composition of the present invention is 10% by volume or more. A larger amount of isoparaffin in the paraffins is preferable in terms of stable combustion when using an oil stove. Here, the isoparaffin ratio in the sample was obtained by subtracting the n-paraffin ratio in the sample determined by gas chromatography (GC) from the paraffin ratio determined by the above method to obtain the isoparaffin ratio and the paraffin ratio. It is obtained from the ratio of similar proportions.

本発明の燃料油組成物では、２環以上の多環芳香族類の含有量が、上記芳香族分２〜２５容量％の内の１．５容％以下であり、その残余が一環芳香族類である。
２環以上の多環芳香族類含有量が１．５容量％以上の場合、煙点が低く燃焼性が不良で煤の発生につながる可能性があり好ましくない。
ここでの２環以上の多環芳香族類の含有割合は、ＪＰＩ−５Ｓ−４９−９７に基づき求められる。 In the fuel oil composition of the present invention, the content of polycyclic aromatics having 2 or more rings is 1.5% or less of the above aromatic content of 2 to 25% by volume, and the remainder is partially aromatic. It is kind.
When the content of polycyclic aromatics having two or more rings is 1.5% by volume or more, the smoke point is low and the flammability is poor, which may lead to generation of soot.
Here, the content ratio of the polycyclic aromatic compound having two or more rings is determined based on JPI-5S-49-97.

さらに、本発明の燃料油組成物では、芳香族分の一環芳香族類の７０容量％以上がアルキルベンゼン類である。一環芳香族類中のアルキルベンゼン類が少なく、ナフテンベンゼン類、ジナフテンベンゼン類等が多い場合、煙点が低く燃焼性が不良で煤の発生につながる可能性があり好ましくない。芳香族類中の一環芳香族類のタイプ別分類は、高速液体クロマトグラフ法（ＨＰＬＣ）により燃料油組成物を芳香族分と飽和分に分画採取した後、芳香族分をガスクロマトグラフ法−質量分析法（ＧＣ−ＭＳ）で分析し、ＡＳＴＭＤ３２３９に従って解析を行い算出できる。ここで得られた芳香族類中のアルキルベンゼン割合と、ＪＰＩ−５Ｓ−４９−９７に基づき求めた一環芳香族類割合の比から、一環芳香族類中のアルキルベンゼン類割合が求められる。 Furthermore, in the fuel oil composition of the present invention, 70% by volume or more of the aromatics as part of the aromatics are alkylbenzenes. When there are few alkylbenzenes in a part aromatics and there are many naphthenebenzenes, dinaphthenebenzenes, etc., a smoke point is low and combustibility may be bad and it may lead to generation | occurrence | production of soot, and it is unpreferable. The classification of aromatics by type in aromatics is classified into aromatics and saturated fractions by high performance liquid chromatography (HPLC), and then the aromatics are gas chromatographed. It can be analyzed by mass spectrometry (GC-MS) and analyzed and calculated according to ASTM D 3239. From the ratio of the alkylbenzene ratio in the aromatics obtained here and the ratio of the partial aromatic ratio determined based on JPI-5S-49-97, the ratio of the alkylbenzenes in the partial aromatics is determined.

上記性状を有する本発明の燃料油組成物は、所謂パラフィン系燃料油組成物の範疇に属する。
本発明の燃料油組成物の製造方法は、特に限定されるものではなく、種々の石油留分から、蒸留によりその蒸留性状を調整し、水素化脱硫処理、接触改質処理、芳香族抽出処理などの種々の処理によりその組成を調整して製造することができるが、次のような一定の性状を有するパラフィン系燃料油組成物に、次のような一定の性状を有する燃料油組成物を混合することによって好適に製造することができる。 The fuel oil composition of the present invention having the above properties belongs to the category of so-called paraffinic fuel oil compositions.
The method for producing the fuel oil composition of the present invention is not particularly limited, and its distillation properties are adjusted by distillation from various petroleum fractions, hydrodesulfurization treatment, catalytic reforming treatment, aromatic extraction treatment, etc. The composition can be produced by adjusting the composition by various treatments, but the following fuel oil composition having certain properties is mixed with the paraffinic fuel oil composition having certain properties as follows: It can manufacture suitably by doing.

すなわち、蒸留性状が初留点１３５〜１７０℃、５０％留出温度１６５〜２２０℃、７０％留出温度１７０〜２４０℃、９０％留出温度１８０〜２６５℃、９５％留出温度１８５〜２７０℃であるパラフィン系燃料油組成物に、蒸留性状が初留点１３５〜１７０℃、５０％留出温度１７５〜２２０℃、７０％留出温度１８５〜２４０℃、９０％留出温度２２０〜２６５℃、９５％留出温度２３５〜２７０℃であり、硫黄分が１０質量ｐｐｍ以下であり、飽和分７５〜９８容量％、芳香族分２〜２５容量％の組成から成る燃料油組成物を混合することにより、本発明の燃料油組成物を好適に製造することができる。このパラフィン系燃料油組成物と、それに混合する燃料油組成物の混合割合は、任意であり、両燃料油組成物の性状など必要に応じて適宜設定することができるが、一般に、パラフィン系燃料油組成物に対するそれに混合する燃料油組成物の容量比率にて２：９８〜９０：１０容量％が好ましく、さらに好ましくは５：９５〜８５：１５容量％である。 That is, the distillation properties are an initial distillation point of 135 to 170 ° C, a 50% distillation temperature of 165 to 220 ° C, a 70% distillation temperature of 170 to 240 ° C, a 90% distillation temperature of 180 to 265 ° C, and a 95% distillation temperature of 185 to 185 ° C. A paraffinic fuel oil composition having a temperature of 270 ° C. has a distillation property of an initial boiling point of 135 to 170 ° C., a 50% distillation temperature of 175 to 220 ° C., a 70% distillation temperature of 185 to 240 ° C., and a 90% distillation temperature of 220 to A fuel oil composition having a composition of 265 ° C., 95% distillation temperature of 235 to 270 ° C., sulfur content of 10 mass ppm or less, saturation content of 75 to 98 vol%, aromatic content of 2 to 25 vol% By mixing, the fuel oil composition of the present invention can be suitably produced. The mixing ratio of the paraffinic fuel oil composition and the fuel oil composition mixed therewith is arbitrary, and the properties of both fuel oil compositions can be appropriately set as required. The volume ratio of the fuel oil composition to be mixed with the oil composition is preferably 2:98 to 90: 10% by volume, more preferably 5:95 to 85: 15% by volume.

本発明において使用するパラフィン系燃料油組成物においては、蒸留性状が上記の通りであるが、初留点が１７０℃より高い場合、着火し難くなる可能性があり好ましくない。初留点が１３５℃より低い場合、引火点が低くなりＪＩＳＫ２２０３で定められる灯油の引火点規格値である４０℃を下回る可能性があり好ましくない。また５０％留出温度が２２０℃、７０％留出温度が２４０℃、９０％留出温度が２６５℃、９５％留出温度が２７０℃より高い場合、着火し難く定常燃焼に至るまでに時間がかかる可能性があり、好ましくない。また５０％留出温度が１６５℃、７０％留出温度が１７０℃、９０％留出温度が１８０℃、９５％留出温度が１８５℃より低い場合、例え蒸留性状及び組成を適正化した他の燃料油組成物を混合しても、芯式・放射形石油ストーブ使用時において、炎を燃焼筒の上部から出さずに、燃焼筒を赤熱した状態に保つという安定した燃焼状態が保てず、また消火の際に鎮火し難くなる可能性があり、好ましくない。
また、本発明において使用するパラフィン系燃料油組成物が、この蒸留性状を逸脱した場合、得られる目的の燃料油組成物にも同様の状況が生じる可能性があり好ましくない。 In the paraffinic fuel oil composition used in the present invention, the distillation properties are as described above. However, if the initial boiling point is higher than 170 ° C., it may be difficult to ignite, which is not preferable. When the initial boiling point is lower than 135 ° C., the flash point becomes lower, which may be less than 40 ° C., which is the flash point standard value of kerosene defined in JIS K2203. Also, when the 50% distillation temperature is 220 ° C, the 70% distillation temperature is 240 ° C, the 90% distillation temperature is 265 ° C, and the 95% distillation temperature is higher than 270 ° C, it is difficult to ignite and it takes time to reach steady combustion. This is not preferable. Also, when the 50% distillation temperature is 165 ° C, the 70% distillation temperature is 170 ° C, the 90% distillation temperature is 180 ° C, and the 95% distillation temperature is lower than 185 ° C, for example, the distillation properties and composition are optimized. Even when the fuel oil composition is mixed, the stable combustion state of keeping the combustion cylinder in a red hot state without leaving the flame from the upper part of the combustion cylinder when using the core type / radial type oil stove cannot be maintained. In addition, it may become difficult to extinguish the fire when extinguishing, which is not preferable.
Further, when the paraffinic fuel oil composition used in the present invention deviates from this distillation property, the same situation may occur in the intended fuel oil composition to be obtained, which is not preferable.

本発明において使用するパラフィン系燃料油組成物に混合する燃料油組成物においては、蒸留性状、硫黄分含有率、飽和分含有率、芳香族含有率が上記の通りであるが、初留点が１７０℃より高い場合、着火し難くなる可能性があり好ましくない。初留点が１３５℃より低い場合、引火点が低くなりＪＩＳＫ２２０３で定められる灯油の引火点規格値である４０℃を下回る可能性があり好ましくない。また５０％留出温度が２２０℃、７０％留出温度が２４０℃、９０％留出温度が２６５℃、９５％留出温度が２７０℃より高い場合、着火し難く定常燃焼に至るまでに時間がかかる可能性があり、好ましくない。また５０％留出温度が１７５℃、７０％留出温度が１８５℃、９０％留出温度が２２０℃、９５％留出温度が２３５℃より低い場合、パラフィン系燃料油組成物に混合した際に蒸留性状を適正化する効果が小さく、芯式・放射形石油ストーブ使用時において、炎を燃焼筒の上部から出さずに、燃焼筒を赤熱した状態に保つという安定した燃焼状態が保てず、また消火の際に鎮火し難くなる等の可能性があり、好ましくない。また硫黄分が１０質量ｐｐｍより多い場合、硫黄分に由来する臭気等が強くなる恐れがあり、好ましくない。さらに芳香族分が２５容量％を超え、飽和分が７５容量％未満、あるいは芳香族分が２容量％未満で、飽和分が９８容量％を越える場合、得られる目的の燃料油組成物の組成割合を、上記本発明の燃料油組成物の規定範囲に適合するように適正化する効果が小さく、好ましくない。
また、本発明において使用するパラフィン系燃料油組成物に混合する燃料油組成物が、この蒸留性状、各成分の含有率を逸脱した場合、得られる目的の燃料油組成物に上記と同様の状況が生じる可能性があり好ましくない。 In the fuel oil composition to be mixed with the paraffinic fuel oil composition used in the present invention, the distillation property, the sulfur content, the saturated content, and the aromatic content are as described above, but the initial boiling point is When it is higher than 170 ° C., it is difficult to ignite, which is not preferable. When the initial boiling point is lower than 135 ° C., the flash point becomes lower, which may be less than 40 ° C., which is the flash point standard value of kerosene defined in JIS K2203. Also, when the 50% distillation temperature is 220 ° C, the 70% distillation temperature is 240 ° C, the 90% distillation temperature is 265 ° C, and the 95% distillation temperature is higher than 270 ° C, it is difficult to ignite and it takes time to reach steady combustion. This is not preferable. When 50% distillation temperature is 175 ° C., 70% distillation temperature is 185 ° C., 90% distillation temperature is 220 ° C., and 95% distillation temperature is lower than 235 ° C., when mixed with paraffinic fuel oil composition The effect of optimizing the distillation properties is small, and when using a core-type / radial oil stove, a stable combustion state is not maintained in which the combustion cylinder is kept in a red-hot state without emitting a flame from the upper part of the combustion cylinder. In addition, there is a possibility that it is difficult to extinguish the fire when extinguishing, which is not preferable. Moreover, when there is more sulfur content than 10 mass ppm, there exists a possibility that the odor etc. which originate in a sulfur content may become strong, and it is unpreferable. Further, when the aromatic content exceeds 25% by volume, the saturation content is less than 75% by volume, or the aromatic content is less than 2% by volume and the saturation content exceeds 98% by volume, the composition of the intended fuel oil composition to be obtained The effect of optimizing the ratio so as to meet the specified range of the fuel oil composition of the present invention is small, which is not preferable.
In addition, when the fuel oil composition to be mixed with the paraffinic fuel oil composition used in the present invention deviates from this distillation property and the content of each component, the obtained fuel oil composition has the same situation as described above. May occur, which is not preferable.

上記製造方法で用いるパラフィン系燃料油組成物の例としては、上記蒸留性状を有する、市販のパラフィン系溶剤、それらの混合物、原油から誘導された石油留分を水素化脱硫処理し、芳香族抽出処理した後のラフィネート留分、あるいは合成ガスからフィッシャー・トロプシュ合成で得られたパラフィン系炭化水素類などが挙げられる。また、このパラフィン系燃料油組成物に混合する燃料油組成物の例としは、種々の石油留分から、蒸留によりその蒸留性状を調整し、水素化脱硫処理、接触改質処理、芳香族抽出処理などの種々の処理によりその組成を調整して製造された、上記性状を有する各種炭化水素留分が挙げられる。 Examples of the paraffinic fuel oil composition used in the above production method include hydrodesulfurization treatment of a petroleum fraction derived from a commercially available paraffinic solvent having a distillation property, a mixture thereof, and crude oil, and aromatic extraction. Examples thereof include a raffinate fraction after treatment, and paraffinic hydrocarbons obtained from a synthesis gas by Fischer-Tropsch synthesis. Examples of the fuel oil composition to be mixed with this paraffinic fuel oil composition include various petroleum fractions whose distillation properties are adjusted by distillation, hydrodesulfurization treatment, catalytic reforming treatment, aromatic extraction treatment. And various hydrocarbon fractions having the above-mentioned properties produced by adjusting the composition by various treatments such as.

本発明の燃料油組成物においては、必要に応じて種々の燃料油添加剤を適宜添加することができる。この燃料油添加剤としては、フェノール系、アミン系などの酸化防止剤、シッフ型化合物やチオアミド型化合物などの金属不活性剤、有機りん系化合物などの表面着火防止剤、琥珀酸イミド、ポリアルキルアミン、ポリエーテルアミンなどの清浄分散剤、多価アルコール及びそのエーテルなどの氷結防止剤、有機酸のアルカリ金属やアルカリ土類金属塩、高級アルコールの硫酸エステルなどの助燃剤、アニオン系界面活性剤、カチオン系界面活性剤、両性界面活性剤などの帯電防止剤、アルケニル琥珀酸エステルなどの錆止め剤、及びアゾ染料などの着色剤などの公知の燃料油添加剤が挙げられる。これらは、１種添加することも、複数種組み合わせて添加することもできる。また、これら燃料油添加剤の添加量は必要に応じて適宜設定することができる。 In the fuel oil composition of the present invention, various fuel oil additives can be appropriately added as necessary. The fuel oil additives include phenol-based and amine-based antioxidants, Schiff-type compounds, metal deactivators such as thioamide-type compounds, surface ignition inhibitors such as organophosphorus compounds, succinimides, polyalkyls. Detergents such as amines and polyetheramines, anti-freezing agents such as polyhydric alcohols and ethers thereof, organic acid alkali metal and alkaline earth metal salts, auxiliary alcohols such as higher alcohol sulfates, anionic surfactants And known fuel oil additives such as antistatic agents such as cationic surfactants and amphoteric surfactants, rust inhibitors such as alkenyl succinates, and colorants such as azo dyes. These may be added alone or in combination of two or more. Moreover, the addition amount of these fuel oil additives can be suitably set as needed.

本発明の燃料油組成物は、所謂民生用暖房機器、例えば各種ストーブ類あるいは石油式給湯器などに好ましく用いることができ、中でも芯上下式石油ストーブ、石油ファンヒーターなどの開放式石油ストーブ用の燃料に適したものである。さらには、直火式の食品乾燥用燃料、工業用燃料、石油発動機用燃料、ソルベントなど各種用途にも好ましく使用できる。 The fuel oil composition of the present invention can be preferably used for so-called consumer heaters such as various types of stoves or oil-type water heaters, among others, for open-type oil stoves such as core up-down type oil stoves and oil fan heaters. It is suitable for fuel. Furthermore, it can be preferably used in various applications such as direct-fired food drying fuel, industrial fuel, petroleum engine fuel, and solvent.

以下に、本発明を実施例、比較例によりさらに具体的に説明する。なお本発明は、これらの例によって何ら制限されるものではない。 Hereinafter, 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.

実施例、比較例において、引火点、蒸留性状、硫黄分、流動点、煙点は、ＪＩＳＫ２２０３に定められる方法に準拠して測定を行なった。
また、石油ストーブを用いた燃焼性評価は下記方法により行なった。
＜燃焼性試験方法＞
芯式・放射型石油ストーブを用いて各種試料の安定燃焼可否を、燃焼中の燃焼状態、消火時の消化性のそれぞれにおいて目視にて評価する。評価基準を下記表１及び表２に示す。
評価に用いた石油ストーブは、ＣＯＲＯＮＡ，ＰｏｒｔａｂｌｅＨｅａｔｅｒ，ＳＸ−２０００Ｘ（約５年使用したもの）である。 In Examples and Comparative Examples, the flash point, distillation properties, sulfur content, pour point, and smoke point were measured according to the method defined in JIS K2203.
Moreover, the combustibility evaluation using the oil stove was performed by the following method.
<Flammability test method>
Using a core-type / radiant oil stove, the possibility of stable combustion of various samples is visually evaluated in each of the combustion state during combustion and digestibility during fire extinguishing. The evaluation criteria are shown in Tables 1 and 2 below.
The petroleum stove used for the evaluation is CORONA, Portable Heater, SX-2000X (used for about 5 years).

実施例、比較例における飽和分、芳香族分の割合は、ＪＰＩ−５Ｓ−４９−９７に基づいて測定を行った。ＨＰＬＣの装置構成及び分析条件を以下に示す。
装置：Agilent 1100 Series（ALS:G1329A, Bin Pump: G1312A, Degasser: G1379A, Rid: G1362A, Colcom: G1316A）
移動相：ｎ−ヘキサン
流量：１．０ｍｌ／ｍｉｎ
カラム：硝酸銀含浸シリカカラム（4.6mml.D.*70mmL. センシュー科学製 AgNO3-1071-Y）
アミン修飾カラム（4.0mml.D.*250mmL. ２本センシュー科学製 LICHROSORB-NH2）
カラム温度：３５℃
試料濃度：１０容量％
注入量：５μｌ The ratio of the saturated content and the aromatic content in the Examples and Comparative Examples was measured based on JPI-5S-49-97. The apparatus configuration and analysis conditions of HPLC are shown below.
Equipment: Agilent 1100 Series (ALS: G1329A, Bin Pump: G1312A, Degasser: G1379A, Rid: G1362A, Colcom: G1316A)
Mobile phase: n-hexane Flow rate: 1.0 ml / min
Column: Silver nitrate impregnated silica column (4.6mml.D. * 70mmL. Senshu Scientific AgNO3-1071-Y)
Amine modified column (4.0mml.D. * 250mmL. 2 LICHROSORB-NH2 manufactured by Senshu Kagaku)
Column temperature: 35 ° C
Sample concentration: 10% by volume
Injection volume: 5 μl

また、飽和分、芳香族分のタイプ分析は下記方法で行なった。
まず、試料をＨＰＬＣにより飽和分と芳香族分とに分画後、飽和分、芳香族分それぞれについて、ＧＣ−ＭＳによりタイプ分析を行なった。ここで得られた分析結果を基に、飽和分はＡＳＴＭＤ２７８６に、芳香族分はＡＳＴＭＤ３２３９に従って解析を行い、飽和分中のパラフィン類、ナフテン類割合、さらには環数別ナフテン類割合、及び芳香族分中の環数別組成割合とアルキルベンゼン類の含有割合を求めた。
ここで得られた結果に基づき、ナフテン中の１環ナフテン類、３環以上ナフテン類割合、及び１環芳香族類中のアルキルベンゼン類割合を求めた。分析条件を下記に示す。
装置：ＨＰ−６８９０ＨＰ５９７３四重極質量分析計
カラム：ＤＢ−１：３０ｍ×０．２５ｍｍＩ．Ｄ．×０．２５μｍ
オーブン温度：４０℃（１ｍｉｎ）→１０℃／ｍｉｎ→２８０℃（５ｍｉｎ）
注入口温度：４３℃ Ｏｖｅｎ track mode ON
インターフェース温度：３００℃
キャリアガス：Ｈｅ：５５ＫＰａ Constant flow mode ＯＮ
ＳｏｌｖｅｎｔＤｅｌａｙ：４．５ｍｉｎ
質量範囲：５０〜５００Ｔｈｒｅｓｈｏｌｄ＝１００Ｓａｍｐｌｉｎｇ♯３
イオン化電圧：７０ｅＶ
注入方法：オンカラム注入３．０μｌ（芳香族分）、１．０μｌ（飽和分） Moreover, the type analysis of the saturated content and the aromatic content was performed by the following method.
First, after fractionating the sample into a saturated component and an aromatic component by HPLC, type analysis was performed on each of the saturated component and the aromatic component by GC-MS. Based on the analysis results obtained here, the saturated content is analyzed according to ASTM D 2786, the aromatic content is analyzed according to ASTM D 3239, the ratio of paraffins and naphthenes in the saturated content, and the ratio of naphthenes by number of rings. And the composition ratio according to the number of rings in the aromatic component and the content ratio of alkylbenzenes were determined.
Based on the results obtained here, the ratio of monocyclic naphthenes in naphthene, tricyclic or higher naphthenes, and the ratio of alkylbenzenes in monocyclic aromatics were determined. The analysis conditions are shown below.
Apparatus: HP-6890 HP5973 Quadrupole mass spectrometer Column: DB-1: 30 m × 0.25 mm I.D. D. × 0.25μm
Oven temperature: 40 ° C. (1 min) → 10 ° C./min→280° C. (5 min)
Inlet temperature: 43 ° C Even track mode ON
Interface temperature: 300 ° C
Carrier gas: He: 55KPa Constant flow mode ON
Solvent Delay: 4.5min
Mass range: 50-500 Threshold = 100 Sampling # 3
Ionization voltage: 70 eV
Injection method: On-column injection 3.0 μl (aromatic content), 1.0 μl (saturated content)

上記方法で得られた飽和分割合と飽和分中のパラフィン類割合から、試料中のパラフィン含有割合を算出し、そこからｎ−パラフィン含有量を差し引くことで、試料中のイソパラフィン含有量を求めた。さらにこの結果に基づき、パラフィン中のイソパラフィン割合を算出した。ここで、ｎ−パラフィン含有量はＧＣにより分析を行なった。以下に測定条件を示す。
装置：5890 series２（Agilent Technologies）
カラム：Ultra 1 (Agilent) Crosslinked Methyl Silicone Gum
50m×0.20mmI.D. 膜厚0.33μm
検出器：ＦＩＤ
オーブン温度：60℃(0min)−(6℃/min)→ 340℃(10min) Run 56.7min
注入口：On-column
注入口温度：オーブントラックモード(オーブン温度＋３℃)
検出器温度：３５０℃
キャリアガス：Ｈｅ 280kPa (定圧) 1.3mL/min 線速度29.7cm/sec(at 60℃)
メイクアップガス：Ｈｅ
ＦＩＤ燃焼ガス：'H2 30 mL/min , Air 400mL/min
注入量：０．２μｌ
定量法：内標準法（内標準物質:フタル酸ジブチルエステル）
なお、化合物の種類が既知の溶剤等を混合した場合には、その混合割合に基づき計算を行い、最終的に得られた燃料油組成物中の、飽和分と芳香族分割合、パラフィン類含有割合、イソパラフィン含有割合、芳香族類中の環数別組成割合、アルキルベンゼン含有割合を算出した。 The paraffin content ratio in the sample was calculated from the saturated ratio obtained by the above method and the paraffin ratio in the saturated content, and the n-paraffin content was subtracted therefrom to obtain the isoparaffin content in the sample. . Furthermore, based on this result, the isoparaffin ratio in the paraffin was calculated. Here, the n-paraffin content was analyzed by GC. The measurement conditions are shown below.
Equipment: 5890 series2 (Agilent Technologies)
Column: Ultra 1 (Agilent) Crosslinked Methyl Silicone Gum
50m × 0.20mm I.D.Thickness 0.33μm
Detector: FID
Oven temperature: 60 ℃ (0min) − (6 ℃ / min) → 340 ℃ (10min) Run 56.7min
Inlet: On-column
Inlet temperature: oven track mode (oven temperature + 3 ° C)
Detector temperature: 350 ° C
Carrier gas: He 280kPa (constant pressure) 1.3mL / min Linear velocity 29.7cm / sec (at 60 ℃)
Make-up gas: He
FID combustion gas: 'H2 30 mL / min, Air 400 mL / min
Injection volume: 0.2 μl
Quantitative method: Internal standard method (Internal standard substance: Dibutyl phthalate)
In addition, when mixing a solvent with a known compound type, the calculation is performed based on the mixing ratio, and in the fuel oil composition finally obtained, the saturated and aromatic content ratio, paraffins contained The ratio, the isoparaffin content ratio, the composition ratio by number of rings in the aromatics, and the alkylbenzene content ratio were calculated.

実施例１
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を２５．０容量％調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４９〜２７１℃、硫黄分０．１９質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にし、蒸留性状が初留点１４９℃、５０％留出温度１９８℃、７０％留出温度２１９℃、９０％留出温度２４５℃、９５％留出温度２５５℃、飽和分８２．８容量％、芳香族分１７．２容量％にした燃料油組成物を７５．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表３に示す。なお、ここで、「ｎ−Ｃ８」〜「ｎ−Ｃ１３」は、「炭素数８のｎ−パラフィン」〜「炭素数１３のｎ−パラフィン」を意味し、以下も同様である。 Example 1
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The paraffinic fuel oil composition is adjusted to 25.0 vol% so that the% distillation temperature is 192 ° C, 90% distillation temperature is 205 ° C, and 95% distillation temperature is 209 ° C, and the crude oil is distilled at atmospheric pressure there. A straight-run kerosene fraction having a boiling point range of 149 to 271 ° C. and a sulfur content of 0.19% by mass is reduced to 10 mass ppm or less by desulfurization, and the distillation properties are an initial boiling point of 149 ° C. and a 50% distillation temperature of 198. ℃, 70% distillation temperature 219 ℃, 90% distillation temperature 245 ℃, 95% distillation temperature 55 ° C., saturates 82.8 volume%, and the fuel oil composition in aromatic content 17.2 vol% and 75.0 vol% blend.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 3. Here, “n-C8” to “n-C13” mean “n-paraffin having 8 carbon atoms” to “n-paraffin having 13 carbon atoms”, and the same applies to the following.

実施例２
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合することにより、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を５０．０容量％調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４９〜２７１℃、硫黄分０．１９質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にし、蒸留性状が初留点１４９℃、５０％留出温度１９８℃、７０％留出温度２１９℃、９０％留出温度２４５℃、９５％留出温度２５５℃、飽和分８２．８容量％、芳香族分１７．２容量％にした燃料油組成物を５０．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表３に示す。 Example 2
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. The paraffinic fuel oil composition was adjusted to 50.0 vol% so that the 70% distillation temperature was 192 ° C, the 90% distillation temperature was 205 ° C, and the 95% distillation temperature was 209 ° C, and the crude oil was distilled at atmospheric pressure there. The straight boiling kerosene fraction having a boiling point range of 149 to 271 ° C. and a sulfur content of 0.19% by mass is reduced to 10 ppm by mass or less by a desulfurization treatment, and the distillation property is an initial boiling point of 149 ° C. and a 50% distillation. Temperature 198 ° C., 70% distillation temperature 219 ° C., 90% distillation temperature 245 ° C., 9 % Distillation temperature 255 ° C., saturates 82.8 volume%, and the fuel oil composition in aromatic content 17.2 vol% and 50.0 vol% blend.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 3.

実施例３
純度９８．０容量％以上の市販ｎ−パラフィン溶剤をそれぞれ、ｎ−Ｃ８：６．０容量％、ｎ−Ｃ９：１２．０容量％、ｎ−Ｃ１０：１１．０容量％、ｎ−Ｃ１１：５．５容量％、ｎ−Ｃ１２：８．５容量％、ｎ−Ｃ１３：６．０容量％、ｎ−Ｃ１４：１．０容量％の割合で、さらに、沸点範囲が１６６〜２１９℃である純度９８．０容量％以上の市販イソパラフィン溶剤を４２．５容量％、沸点範囲が２０２〜２６２℃である純度９８．０容量％以上の市販イソパラフィン溶剤を７．５容量％の割合でそれぞれ混合し、蒸留性状が初留点１４５℃、５０％留出温度１８６℃、７０％留出温度１９７℃、９０％留出温度２１６℃、９５％留出温度２２７℃となるようにパラフィン系燃料油組成物を５０．０容量％調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４８〜２８１℃、硫黄分０．３１質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にし、蒸留性状が初留点１４８．５℃、５０％留出温度２０３℃、７０％留出温度２２２．５℃、９０％留出温度２４８．５℃、９５％留出温度２５８℃、飽和分８２．７容量％、芳香族分１７．３容量％にした燃料油組成物を５０．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表３に示す。 Example 3
Commercially available n-paraffin solvents having a purity of 98.0% by volume or more were n-C8: 6.0% by volume, n-C9: 12.0% by volume, n-C10: 11.0% by volume, n-C11: 5.5 vol%, n-C12: 8.5 vol%, n-C13: 6.0 vol%, n-C14: 1.0 vol%, and the boiling point range is 166-219 ° C. 42.5% by volume of a commercially available isoparaffin solvent having a purity of 98.0% by volume or more, and 7.5% by volume of a commercially available isoparaffin solvent having a boiling point range of 202 to 262 ° C. and having a purity of 98.0% by volume or more are mixed. The paraffinic fuel oil composition was such that the distillation properties were 145 ° C at the initial distillation point, 186 ° C at the 50% distillation temperature, 197 ° C at the 70% distillation temperature, 216 ° C at the 90% distillation temperature, and 227 ° C at the 95% distillation temperature. The product is adjusted to 50.0% by volume, and crude oil is steamed there. The straight boiling kerosene fraction having a boiling point range of 148 to 281 ° C. and a sulfur content of 0.31% by mass is reduced to 10 mass ppm or less by desulfurization, and the distillation property is 148.5 ° C. and 50% of the initial boiling point. Distillation temperature 203 ° C., 70% distillation temperature 222.5 ° C., 90% distillation temperature 248.5 ° C., 95% distillation temperature 258 ° C., saturation content 82.7% by volume, aromatic content 17.3% by volume The prepared fuel oil composition was blended in an amount of 50.0% by volume.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 3.

実施例４
純度９８．０容量％以上の市販ｎ−パラフィン溶剤をそれぞれ、ｎ−Ｃ８：４．５容量％、ｎ−Ｃ９：１６．０容量％、ｎ−Ｃ１０：１６．０容量％、ｎ−Ｃ１１：１４．５容量％、ｎ−Ｃ１２：１４．５容量％、ｎ−Ｃ１３：１２．５容量％、ｎ−Ｃ１４：１０．０容量％、ｎ−Ｃ１５：２．０容量％の割合で、さらに、沸点範囲が１６６〜２１９℃である純度９８．０容量％以上の市販イソパラフィン溶剤を７．５容量％、沸点範囲が２０２〜２６２℃である純度９８．０容量％以上の市販イソパラフィン溶剤を２．５容量％の割合でそれぞれ混合し、蒸留性状が初留点１５３℃、５０％留出温度１９５℃、７０％留出温度２１３℃、９０％留出温度２３２℃、９５％留出温度２３９℃であるパラフィン系燃料油組成物を７５．０容量％調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４８〜２８１℃、硫黄分０．３１質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にし、蒸留性状が初留点１４８．５℃、５０％留出温度２０３℃、７０％留出温度２２２．５℃、９０％留出温度２４８．５℃、９５％留出温度２５８℃、飽和分８２．７容量％、芳香族分１７．３容量％にした燃料油組成物を２５．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表３に示す。 Example 4
Commercially available n-paraffin solvents having a purity of 98.0% by volume or more are respectively n-C8: 4.5% by volume, n-C9: 16.0% by volume, n-C10: 16.0% by volume, n-C11: 14.5% by volume, n-C12: 14.5% by volume, n-C13: 12.5% by volume, n-C14: 10.0% by volume, n-C15: 2.0% by volume, 7.5% by volume of a commercially available isoparaffin solvent having a boiling point range of 166 to 219 ° C. and a purity of 98.0% by volume or more, and 2 of a commercially available isoparaffin solvent having a boiling point range of 202 to 262 ° C. and a purity of 98.0% by volume or more. 5% by volume, and the distillation properties are the initial distillation point 153 ° C., 50% distillation temperature 195 ° C., 70% distillation temperature 213 ° C., 90% distillation temperature 232 ° C., 95% distillation temperature 239 75.0 vol% of paraffinic fuel oil composition at ℃ And a straight-run kerosene fraction having a boiling point range of 148 to 281 ° C. and a sulfur content of 0.31% by mass obtained by subjecting the crude oil to atmospheric distillation is desulfurized to a sulfur content of 10 mass ppm or less. Initial distillation point 148.5 ° C., 50% distillation temperature 203 ° C., 70% distillation temperature 222.5 ° C., 90% distillation temperature 248.5 ° C., 95% distillation temperature 258 ° C., saturated portion 82.7 volumes % And 25.0 vol% of a fuel oil composition having an aromatic content of 17.3 vol%.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 3.

参考例５
純度９８．０容量％以上の市販ｎ−パラフィン溶剤をそれぞれ、ｎ−Ｃ８：４．５容量％、ｎ−Ｃ９：１６．０容量％、ｎ−Ｃ１０：１６．０容量％、ｎ−Ｃ１１：１４．５容量％、ｎ−Ｃ１２：１４．５容量％、ｎ−Ｃ１３：１２．５容量％、ｎ−Ｃ１４：１０．０容量％、ｎ−Ｃ１５：２．０容量％の割合で、さらに沸点範囲が１６６〜２１９℃である純度９８．０容量％以上の市販イソパラフィン溶剤を７．５容量％、沸点範囲が２０２〜２６２℃である純度９８．０容量％以上の市販イソパラフィン溶剤を２．５容量％の割合でそれぞれ混合し、蒸留性状が初留点１５３℃、５０％留出温度１９５℃、７０％留出温度２１３℃、９０％留出温度２３２℃、９５％留出温度２３９℃であるパラフィン系燃料油組成物を７５．０容量％調整し、そこに沸点範囲が１５７〜１７９℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２０１〜２１７℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２２１〜２４０℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、さらに市販の特級キシレンを５．０容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を２．５容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を１７．５容量％配合することで得られる蒸留性状が初留点１６５℃、５０％留出温度２００℃、７０％留出温度２１５℃、９０％留出温度２２２℃、９５％留出温度２３７℃、硫黄分１質量ｐｐｍ以下、飽和分７５容量％、芳香族分２５容量％にした燃料油組成物を２５．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表３に示す。 Reference Example 5
Commercially available n-paraffin solvents having a purity of 98.0% by volume or more are respectively n-C8: 4.5% by volume, n-C9: 16.0% by volume, n-C10: 16.0% by volume, n-C11: 14.5% by volume, n-C12: 14.5% by volume, n-C13: 12.5% by volume, n-C14: 10.0% by volume, n-C15: 2.0% by volume, 1. 7.5% by volume of a commercially available isoparaffin solvent having a boiling point range of 166 to 219 ° C. and a purity of 98.0% by volume or more, and 2% of a commercially available isoparaffin solvent having a boiling point range of 202 to 262 ° C. and a purity of 98.0% by volume or more. Mixing ratios of 5% by volume, respectively, distillation properties are initial distillation point 153 ° C, 50% distillation temperature 195 ° C, 70% distillation temperature 213 ° C, 90% distillation temperature 232 ° C, 95% distillation temperature 239 ° C. The paraffinic fuel oil composition is 75.0% by volume 25.0% by volume of a commercially available naphthenic solvent having a boiling point range of 157 to 179 ° C. and a purity of 99.0% by volume or more, and a commercially available naphthenic solvent having a boiling point range of 201 to 217 ° C. and a purity of 99.0% by volume or more. 25.0% by volume of naphthenic solvent, 25.0% by volume of commercially available naphthenic solvent having a boiling range of 221 to 240 ° C. and a purity of 99.0% by volume or more, and 5.0% by volume of commercially available special grade xylene, 2.5% by volume of a commercially available aromatic solvent having a boiling range of 161 to 179 ° C. and a purity of 99.0% by volume or more, and a commercially available aromatic solvent having a boiling point of 196 to 250 ° C. and a purity of 99.0% by volume or more Distillation obtained by adding 17.5% by volume of solvent has an initial distillation point of 165 ° C, a 50% distillation temperature of 200 ° C, a 70% distillation temperature of 215 ° C, a 90% distillation temperature of 222 ° C, and a 95% distillation. Temperature 237 ° C, sulfur content 1 mass ppm Lower, saturates 75 volume%, and the aromatic content of 25% by volume fuel oil composition was 25.0 volume% formulation.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 3.

比較例１
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を調整し、他の燃料油組成物は配合しなかった。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 1
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The paraffinic fuel oil composition was adjusted so that the% distillation temperature was 192 ° C., 90% distillation temperature 205 ° C., and 95% distillation temperature 209 ° C., and no other fuel oil composition was blended.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例２
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４９〜２７１℃、硫黄分０．１９質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にした燃料油組成物を１０．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 2
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The boiling point range obtained by adjusting the paraffinic fuel oil composition so that the% distillation temperature is 192 ° C, 90% distillation temperature 205 ° C, and 95% distillation temperature 209 ° C, and crude oil is distilled at atmospheric pressure there. A fuel oil composition in which a straight kerosene fraction having a sulfur content of 0.19% by mass at 149 to 271 ° C. was desulfurized to a sulfur content of 10 mass ppm or less was blended in an amount of 10.0% by volume.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例３
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を調整し、そこに原油を常圧蒸留することで得られる沸点範囲１４５〜２４５℃、硫黄分０．１５質量％の直留灯油留分を脱硫処理により硫黄分１０質量ｐｐｍ以下にした燃料油組成物を５０．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 3
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The boiling point range obtained by adjusting the paraffinic fuel oil composition so that the% distillation temperature is 192 ° C, 90% distillation temperature 205 ° C, and 95% distillation temperature 209 ° C, and crude oil is distilled at atmospheric pressure there. A fuel oil composition in which a straight kerosene fraction having a sulfur content of 0.15% by mass at 145 to 245 ° C. was desulfurized to a sulfur content of 10 mass ppm or less was blended in an amount of 50.0% by volume.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例４
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：５．０容量％、ｎ−Ｃ９：２０．０容量％、ｎ−Ｃ１０：２０．０容量％、ｎ−Ｃ１１：１８．５容量％、ｎ−Ｃ１２：１７．５容量％、ｎ−Ｃ１３：１０．０容量％、ｎ−Ｃ１４：７．５容量％、ｎ−Ｃ１５：１．５容量％の割合で混合し、蒸留性状が初留点１４５℃、５０％留出温度１９０℃、７０％留出温度２０４℃、９０％留出温度２２０℃、９５％留出温度２３０℃となるようにパラフィン系燃料油組成物を調整し、そこに市販の特級キシレンを２０．０容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を１０．０容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を７０．０容量％配合することにより得られた燃料油組成物を７．５容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 4
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 5.0% by volume, n-C9: 20.0% by volume, n-C10: 20.0% by volume, n-C11 : 18.5% by volume, n-C12: 17.5% by volume, n-C13: 10.0% by volume, n-C14: 7.5% by volume, n-C15: 1.5% by volume The paraffinic fuel oil has an initial distillation point of 145 ° C, a 50% distillation temperature of 190 ° C, a 70% distillation temperature of 204 ° C, a 90% distillation temperature of 220 ° C, and a 95% distillation temperature of 230 ° C. A composition is prepared, and there is 20.0% by volume of commercially available special grade xylene, 10.0% by volume of a commercially available aromatic solvent having a boiling point range of 161 to 179 ° C. and a purity of 99.0% by volume or more, and a boiling point range. 70.0 volumes of a commercially available aromatic solvent having a purity of 99.0% by volume or more having a 196 to 250 ° C. % Formulation resulting fuel oil composition was 7.5 volume% formulation by.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例５
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を調整し、そこに市販の特級キシレンを２０．０容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を５．０容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を７５．０容量％配合することで得られる燃料油組成物を５０．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 5
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The paraffinic fuel oil composition was adjusted to have a% distillation temperature of 192 ° C, 90% distillation temperature of 205 ° C, and 95% distillation temperature of 209 ° C. 5.0% by volume of a commercially available aromatic solvent having a purity of 99.0% by volume or more in a range of 161 to 179 ° C., and a commercially available aromatic solvent having a purity of 99.0% by volume or more in a boiling point range of 196 to 250 ° C. 50.0% by volume of a fuel oil composition obtained by blending 75.0% by volume of It was.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例６
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：５．５容量％、ｎ−Ｃ９：１４．５容量％、ｎ−Ｃ１０：１３．５容量％、ｎ−Ｃ１１：１３．０容量％、ｎ−Ｃ１２：１３．５容量％、ｎ−Ｃ１３：５．５容量％、ｎ−Ｃ１４：３．０容量％、ｎ−Ｃ１５：１．０容量％の割合で、さらに沸点範囲が１６６〜２１９℃である純度９８．０容量％以上の市販イソパラフィン溶剤を２３．０容量％、沸点範囲が２０２〜２６２℃である純度９８．０容量％以上の市販イソパラフィン溶剤を７．５容量％の割合で混合し、蒸留性状が初留点１４７℃、５０％留出温度１９２℃、７０％留出温度２０５℃、９０％留出温度２２０℃、９５％留出温度２２８℃となるようにパラフィン系燃料油組成物を調整し、そこに市販の特級キシレンを１６．０容量％、市販の１級テトラリンを１８．０容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を４．０容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を６２．０容量％配合することで得られる燃料油組成物を３７．５容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 6
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 5.5% by volume, n-C9: 14.5% by volume, n-C10: 13.5% by volume, n-C11 13.0% by volume, n-C12: 13.5% by volume, n-C13: 5.5% by volume, n-C14: 3.0% by volume, n-C15: 1.0% by volume, Furthermore, 23.0% by volume of a commercially available isoparaffin solvent having a boiling point range of 166 to 219 ° C. and a purity of 98.0% by volume or more, and 7% of a commercially available isoparaffin solvent having a boiling point range of 202 to 262 ° C. and a purity of 98.0% by volume or more. Mixing at a ratio of 5% by volume, distillation properties are initial boiling point 147 ° C., 50% distillation temperature 192 ° C., 70% distillation temperature 205 ° C., 90% distillation temperature 220 ° C., 95% distillation temperature 228 ° C. The paraffinic fuel oil composition is adjusted so that 16.0% by volume of xylene, 18.0% by volume of commercially available primary tetralin, 4.0% by volume of a commercially available aromatic solvent having a boiling point range of 161 to 179 ° C. and a purity of 99.0% by volume or more, and boiling point A fuel oil composition obtained by blending 62.0% by volume of a commercial aromatic solvent having a purity of 99.0% by volume or more in the range of 196 to 250 ° C. was blended by 37.5% by volume.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例７
純度９８．０容量％以上の市販ｎ−パラフィン溶剤を用いて、ｎ−Ｃ８：４．０容量％、ｎ−Ｃ９：２４．５容量％、ｎ−Ｃ１０：２４．０容量％、ｎ−Ｃ１１：２３．５容量％、ｎ−Ｃ１２：２２．５容量％、ｎ−Ｃ１３：１．５容量％の割合で混合し、蒸留性状が初留点１５２℃、５０％留出温度１８１℃、７０％留出温度１９２℃、９０％留出温度２０５℃、９５％留出温度２０９℃となるようにパラフィン系燃料油組成物を調整し、そこに沸点範囲が１５７〜１７９℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２０１〜２１７℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２２１〜２４０℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、さらに市販の特級キシレンを３．０容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を１．５容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を１０．５容量％、市販の特級１メチルナフタレンを１０．０容量％配合することで得られる燃料油組成物を８５．０容量％配合した。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 7
Using a commercially available n-paraffin solvent having a purity of 98.0% by volume or more, n-C8: 4.0% by volume, n-C9: 24.5% by volume, n-C10: 24.0% by volume, n-C11 : 23.5% by volume, n-C12: 22.5% by volume, n-C13: 1.5% by volume. Distillation properties are initial boiling point 152 ° C., 50% distillation temperature 181 ° C., 70 The paraffinic fuel oil composition was adjusted so that the distillation temperature was 192 ° C., 90% distillation temperature was 205 ° C., and 95% distillation temperature was 209 ° C., and the boiling point range was 157 to 179 ° C. 25.0% by volume of a commercially available naphthenic solvent with a volume of 0% by volume or more, 25.0% by volume of a commercially available naphthenic solvent with a purity of 99.0% by volume or more with a boiling point range of 201-217 ° C., and a boiling range of 221-240 25 commercially available naphthenic solvent having a purity of 99.0% by volume or more at 25 ° C. 0% by volume, 3.0% by volume of commercially available special grade xylene, 1.5% by volume of a commercial aromatic solvent having a boiling point range of 161-179 ° C. and a purity of 99.0% by volume or more, and a boiling point range of 196- 85.0% of a fuel oil composition obtained by blending 10.5% by volume of a commercially available aromatic solvent with a purity of 99.0% by volume or higher at 250 ° C. and 10.0% by volume of commercially available special grade 1 methylnaphthalene. Volume% was blended.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

比較例８
沸点範囲が１５７〜１７９℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２０１〜２１７℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、沸点範囲が２２１〜２４０℃である純度９９．０容量％以上の市販ナフテン系溶剤を２５．０容量％、さらに市販の特級キシレンを１．６容量％、沸点範囲が１６１〜１７９℃である純度９９．０容量％以上の市販芳香族系溶剤を０．８容量％、沸点範囲が１９６〜２５０℃である純度９９．０容量％以上の市販芳香族系溶剤を５．６容量％、市販の１級テトラリンを１７．０容量％配合することで燃料油組成物を得た。
得られた燃料油組成物の性状及び評価結果を表４に示す。 Comparative Example 8
25.0% by volume of a commercially available naphthenic solvent having a boiling point range of 157 to 179 ° C. and a purity of 99.0% by volume or more, and a commercially available naphthenic solvent having a boiling point range of 201 to 217 ° C. and a purity of 99.0% by volume or more. 25.0% by volume, 25.0% by volume of a commercial naphthenic solvent having a boiling point range of 221 to 240 ° C. and a purity of 99.0% by volume or more, 1.6% by volume of commercially available special grade xylene, and a boiling point range of 161 0.8% by volume of a commercially available aromatic solvent having a purity of 99.0% by volume or higher at ˜179 ° C. and 5% of a commercially available aromatic solvent having a purity of 99.0% by volume having a boiling point range of 196-250 ° C. A fuel oil composition was obtained by blending 6% by volume and 17.0% by volume of commercially available primary tetralin.
Properties and evaluation results of the obtained fuel oil composition are shown in Table 4.

パラフィン類１００％で、蒸留性状が本発明で定められる範囲より軽質である比較例１は、煙点は極めて高いが、芯式・放射型石油ストーブによる燃焼性試験において安定燃焼ができず、消火し難い結果となった。芳香族分割合が非常に少なく、パラフィン類含有割合が比較的多く、パラフィン類中のイソパラフィン割合が少なく、蒸留性状が本発明で定められる範囲より軽質である比較例２も、煙点は非常に高い結果となったが、芯式・放射型石油ストーブによる燃焼性試験において安定燃焼ができず、消火し難い結果となった。また芳香族分割合、パラフィン類含有割合及びパラフィン類中のイソパラフィン割合は本発明の規定を満たすが、蒸留性状が本発明で定められる範囲より軽質である比較例３も、煙点は比較的高いが、芯式・放射型石油ストーブによる燃焼性試験において安定燃焼ができない結果となった。さらに、蒸留性状及び芳香族分含有量は本発明の規定範囲を満たすが、パラフィン類含有割合が比較的多く、パラフィン類中にイソパラフィンを含まない比較例４も、煙点は高いが芯式・放射型石油ストーブによる燃焼性試験において赤熱に偏りがあり、消火し難い結果となった。
芳香族分割合が多く、２環以上の芳香族類含有割合が多い比較例５と、さらに１環芳香族類中のアルキルベンゼン類割合が少ない比較例６は、煙点が低く燃焼性が不良な結果となった。さらに、芳香族分割合は本発明の規定範囲を満たすが、パラフィン類含有割合が少なく、２環以上の芳香族類含有割合が多い比較例７も煙点が２３ｍｍ未満であり、燃焼性が不良な結果となった。そして、芳香族分含有割合及び２環以上の芳香族類含有割合は本発明の規定範囲を満たすが、一環芳香族類中のアルキルベンゼン類割合が非常に少ない比較例８も煙点が低く燃焼性が不良な結果となった。
一方、本発明の規定を全て満たす実施例１〜５は、煙点が高いことから燃焼性に優れ、さらに芯式・放射型石油ストーブによる燃焼性試験においても安定した燃焼を示し、消火性も特に問題はない結果であった。 In Comparative Example 1, which is 100% paraffins and has a lighter distillation property than the range defined by the present invention, the smoke point is extremely high, but stable combustion is not possible in a flammability test using a core type / radiant oil stove, and the fire is extinguished. The result was difficult. In Comparative Example 2 where the aromatic content is very low, the paraffin content is relatively high, the isoparaffin content in the paraffin is low, and the distillation property is lighter than the range defined in the present invention, the smoke point is also very high. Although the result was high, stable combustion was not possible in the flammability test using the core type / radiant type oil stove, and it was difficult to extinguish. In addition, the aromatic content ratio, the paraffin content ratio, and the isoparaffin ratio in the paraffins satisfy the provisions of the present invention, but the smoke point is also relatively high in Comparative Example 3 in which the distillation property is lighter than the range defined by the present invention. However, stable combustion was not possible in the flammability test using the core type / radiant type oil stove. Furthermore, the distillation property and aromatic content satisfy the specified range of the present invention, but the paraffins content is relatively high, and Comparative Example 4 which does not contain isoparaffin in the paraffin also has a high smoke point, In the flammability test with a radiant oil stove, the red heat was biased and it was difficult to extinguish.
Comparative Example 5 with a high aromatic content ratio and a high content ratio of two or more ring aromatics and Comparative Example 6 with a low ratio of alkylbenzenes in one-ring aromatics have a low smoke point and poor flammability. As a result. Furthermore, although the aromatic content ratio satisfies the specified range of the present invention, the comparative example 7 having a low paraffin content ratio and a high content ratio of two or more aromatic rings also has a smoke point of less than 23 mm and poor flammability. It became a result. The aromatic content ratio and the aromatic content ratio of two or more rings satisfy the specified range of the present invention, but Comparative Example 8 in which the proportion of alkylbenzenes in the aromatics is very small also has a low smoke point and flammability. Gave bad results.
On the other hand, Examples 1 to 5, which satisfy all the provisions of the present invention, are excellent in flammability due to their high smoke point, and also show stable combustion in a flammability test with a core type / radiant oil stove, and fire extinguishing is There was no particular problem.

Claims

Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 165-220 ° C, 70% distillation temperature 170-240 ° C, 90% distillation temperature 180-265 ° C, 95% distillation temperature 185-270 ° C. A paraffinic fuel oil composition (A),
Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 175-220 ° C, 70% distillation temperature 185-240 ° C, 90% distillation temperature 220-265 ° C, 95% distillation temperature 255-270 ° C. A fuel oil composition containing a fuel oil composition (B) having a sulfur content of 10 mass ppm or less, a saturated content of 75 to 98 vol%, and an aromatic content of 2 to 25 vol%. And
Distillation properties are initial boiling point 135-170 ° C, 50% distillation temperature 165-220 ° C, 70% distillation temperature 170-240 ° C, 90% distillation temperature 215-265 ° C, 95% distillation temperature 230-270 ° C. , Having a property of sulfur content of 10 ppm by mass or less, consisting of a composition having a saturation content of 87 to 98% by volume and an aromatic content of 2 to 13 % by volume , and the ratio of paraffins in the fuel oil composition is 45 to 95% by volume %, The ratio of isoparaffin in the paraffins is 10% by volume or more, the ratio of polycyclic aromatics of 2 or more rings in the fuel oil composition is 0.1 to 1.5% by volume , and the balance Is a part aromatics, and a fuel oil composition in which 70% by volume or more of the part aromatics is alkylbenzenes.