JP3940885B2 - Hydrocarbon fuel composition - Google Patents

Hydrocarbon fuel composition Download PDF

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JP3940885B2
JP3940885B2 JP2001077459A JP2001077459A JP3940885B2 JP 3940885 B2 JP3940885 B2 JP 3940885B2 JP 2001077459 A JP2001077459 A JP 2001077459A JP 2001077459 A JP2001077459 A JP 2001077459A JP 3940885 B2 JP3940885 B2 JP 3940885B2
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fuel
oil
distillation temperature
fuel composition
hydrocarbon
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JP2002275481A (en
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行男 赤坂
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株式会社ジョモテクニカルリサーチセンター
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

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Description

【0001】
【発明の属する技術分野】
本発明は自動車などの燃料に関し、ガソリン内燃機関用の燃料として環境に配慮したものであり、同時に、燃料を水蒸気改質して取り出した水素により燃料電池を駆動するための燃料電池用燃料としても適した炭化水素系燃料組成物に関する。
【0002】
【従来の技術】
近年、自動車用の動力源として、燃料電池と電動モータの組み合わせが注目されている。燃料電池の燃料として水素を用いる場合、水素自体では貯蔵、運搬が難しい。このため、取り扱いが容易な炭化水素燃料、アルコールなどの液体燃料を水蒸気改質して水素を取り出し、燃料電池用の燃料として用いる技術が注目されている。
【0003】
【発明が解決しようとする課題】
自動車の水素源としてこのような液体燃料を用いる場合、現在のいわゆるガソリンスタンドのように多くの供給所を分散して配置し、その供給所に燃料を配送することが必要となる。しかし、水蒸気改質により効率よく水素を取り出すためには、現状のガソリン機関用燃料(いわゆるガソリン)とは異なった、特性が要求される。そのため、ガソリン自動車用燃料とは別に燃料電池用炭化水素燃料のための石油精製プロセス、貯蔵タンク、配送機器、給油装置などを設ける必要があり、これらを製油所に増設し、かつ、ガソリンスタンドなどの配送・供給施設を増設するには多大な投資が必要となる。燃料電池自動車の普及過程では、現状のガソリン機関用ガソリンと比べて燃料の使用量も少ないため、燃料電池用燃料の製造・配送コストは相対的に高いものとなる。
【0004】
また、ガソリン機関と燃料電池の両者の動力源を用いた自動車では、それぞれの燃料用に2種類の燃料タンクが必要となる。さらに、同一の給油所において、ガソリン機関用燃料と燃料電池用炭化水素燃料の両者を取り扱う場合には、間違えて給油する危険性もある。
【0005】
本発明は、上述の課題を解決するものであり、全体的な供給コストが低く、かつ、取り扱い上の問題を生じない燃料電池用燃料を提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明者は、ガソリン機関用燃料と燃料電池用炭化水素燃料に共用できる燃料を開発することで、上述の目的を達成できることに想到し、本発明を完成した。本発明による炭化水素系燃料組成物は、リサーチ法オクタン価が89以上、芳香族分が10容量%以上15容量%以下、硫黄分が1ppm以下、5%留出温度が25℃以上、50%留出温度が75℃以上100℃以下、95%留出温度が190℃以下、かつ、水素と炭素の原子比(H/C比)が2.0以下である。特に、沸点が25℃〜190℃であるアルコールまたはエーテルを5〜30重量%、炭化水素を70〜95重量%含有することが好ましい。
【0007】
【発明の実施の形態】
本発明による炭化水素系燃料組成物は、リサーチ法オクタン価が89以上、好ましくは89以上100以下、さらに好ましくは89以上92以下である。低すぎる場合は、ガソリン機関運転時、とりわけ登坂加速時にノッキングしやすくなるので好ましくない。リサーチ法オクタン価は、JIS K 2280「オクタン価試験方法」により測定できる。
【0008】
本発明による炭化水素系燃料組成物は、芳香族分が10容量%以上15容量%以下である。芳香族成分の含有量は、JISK2536の「燃料炭化水素成分試験方法(蛍光指示薬吸着法)」により測定できる。
【0009】
本発明による炭化水素系燃料組成物は、硫黄分が1質量ppm以下、好ましくは0.5質量ppm以下である。硫黄分は、JIS K 2541の「微量電量滴定式酸化法」により測定できる。
【0010】
本発明による炭化水素系燃料組成物は、5%留出温度が25℃以上、50%留出温度が70℃以上100℃以下、95%留出温度が190℃以下である。5%留出温度は25℃以上、好ましくは40〜50℃である。これ未満では、燃料の取り扱い上の制約が多くなる。30%留出温度は40〜80℃、特には55〜70℃が、ガソリン機関運転時の加速性の点から好ましい。50%留出温度は、加速性能、特に車両冷機時の加速性能の点から、70〜100℃、好ましくは80〜95℃とする。50%留出温度が100℃を越えると、車両冷機時の加速性能が悪化する。また、50%留出温度が70℃未満であると、加速性能が悪化するばかりでなく、ベーパーロック、パーコレーションなどを生じ、耐熱性能に対して悪影響を与たり、気化器仕様車では気化器氷結等発生の懸念がある。70%留出温度は95〜120℃、特には105〜115℃が好ましい。95%留出温度は、車両冷機時の加速性能および排ガス性能の点から、190℃以下、好ましくは150〜170℃とする。5%留出温度などの蒸留性状は、「JIS K 2254」の「燃料油蒸留試験方法」で規定された方法によって測定できる。
【0011】
本発明による炭化水素系燃料組成物は、水素と炭素の原子比(H/C比)が2.0以上、好ましくは2.0〜2.2、さらに好ましくは2.0〜2.1である。H/C比が2.0未満では、水蒸気改質より取り出す水素量が少なくなる。H/C比が2.2を超えると、ガソリン内燃機関用の燃料として燃費が低下する。水素と炭素の原子比(H/C比)は、燃料組成物を元素分析することにより特定することができる。
【0012】
本発明による炭化水素系燃料組成物には、沸点が25℃〜190℃であるアルコールまたはエーテルを5〜30重量%、好ましく10〜20重量%を含有させることができる。このようなアルコールとしては、エタノール、プロパノール、ブタノールなどが挙げられ、エーテルとしてはメチル−t−ブチルエーテル、エチル−t−ブチルエーテル、メチル−sec−ブチルエーテル、t−アミルメチルエーテルなどが挙げられる。特には、オクタン価も高く、水蒸気改質の効率もよいことから、メチルターシャリーブチルエーテル(MTBE)、エチルターシャリーブチルエーテル(ETBE)、ターシャリーアミルメチルエーテル(TAME)などが好ましく用いられる。
【0013】
さらに、本発明による炭化水素系燃料組成物は、15℃での密度が0.70〜0.75g/cm、特には0.705〜0.717g/cm、JIS K 2261「石油製品−自動車ガソリン及び航空燃料油−実在ガム試験方法−噴射蒸発法」による未洗実在ガムが2mg/100mL以下であることが好ましい。
【0014】
本発明による炭化水素系燃料組成物は、▲1▼原油を常圧蒸留した直留ナフサ、▲2▼直留ナフサを脱硫処理した脱硫ナフサ、▲3▼脱硫重質ナフサを接触改質処理して得られる改質ガソリン、▲4▼軽油から減圧軽油までの石油留分や重油間接脱硫装置から得られる間脱軽油、重油直接脱硫装置から得られる直脱重油、常圧残さ油などを接触分解して得られる接触分解ガソリン基材、▲5▼低級オレフィンとイソブタンを酸触媒下で反応させて得られるアルキレート、▲6▼軽質ナフサを接触処理し、異性化してオクタン価を高めたアイソメレート、▲7▼原油や各種の2次精製装置から回収されるLPG留分や軽質ナフサなどを精密蒸留して得られるブタン、イソペンタンなどを適宜選択して適宜の割合で混合して製造することができる。また、石油系原料以外に、石炭や天然ガスからフィッシャ−トロプシュ合成により得られるパラフィン系炭化水素を原料として用いることもできる。
【0015】
▲4▼接触分解ガソリン基材は、灯軽油から常圧残油に至る広範囲の石油留分、好ましくは重質軽油や減圧軽油を、流動接触分解法によって無定形シリカアルミナ、ゼオライトなどの固体酸触媒で分解して得られるリサーチオクタン価89〜92、初留点が25〜40℃、90%留出温度が70〜90℃であることが好ましい。接触分解装置は、例えば石油学会編「新石油精製プロセス」に記載のあるUOP接触分解法、フレキシクラッキング法、ウルトラ・オルソフロー法、テキサコ流動接触分解法などの流動接触分解法、RCC法、HOC法などの残油流動接触分解法などがある。
【0016】
▲5▼アルキレートは、イソブタンおよび低級オレフィン(ブテン、プロピレンなど)を、酸触媒(硫酸、フッ化水素酸、塩化アルミニウムなど)の存在下で反応させることによって、得られるものであり、イソオクタンを60容量%以上含有するものが好ましく、特にこのうちリサーチ法オクタン価が92以上のものを好ましく使用できる。
【0017】
本発明による炭化水素系燃料組成物には、必要に応じて公知の燃料添加剤を配合することができる。これらの配合量は適宜選べるが、通常は添加剤の合計量として0.1重量%以下とすることが好ましい。本発明の炭化水素系燃料組成物で使用可能な添加剤を例示すれば、アミン系、フェノール系、アミノフェノール系などの酸化防止剤、シッフ型化合物、チオアミド型化合物などの金属不活性化剤、有機リン系化合物などの表面着火防止剤、コハク酸イミド、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、多価アルコールやそのエーテルなどの氷結防止剤、有機酸のアルカリ金属塩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、アルケニルコハク酸エステルなどのさび止め剤、キニザリン、クマリンなどの識別剤、アゾ染料などの着色剤を挙げることができる。
【0018】
【実施例】
以下に本発明を実施例に基いて、より具体的に説明するが、本発明はこれらの例によって何ら限定されるものではない。
【0019】
実施例の製造に用いた基材である、アルキレート、直留軽質ナフサ、イソペンタン留分、改質ガソリンおよび重質接触分解ガソリンの性状を表1に示す。これらの基材を表2の配合量で配合し、供試油1〜4を調製した。比較に用いた市販レギュラーガソリンを供試油5として、その特性を表2に示す。
【0020】
【表1】

Figure 0003940885
【0021】
【表2】
Figure 0003940885
【0022】
〔排出ガス試験〕 供試油1〜4について、10・15モードで排出ガス試験を行い、一酸化炭素、全炭化水素および窒素酸化物濃度とした。試験車両としては、本田技研工業株式会社製の「アコード」(弁形式:OHC、圧縮比:9.4、排気量:1.8L、燃料供給方式:PFI)を用いた。測定結果を表3に示す。
【0023】
【表3】
Figure 0003940885
【0024】
〔加速性試験〕 1/4スロットル開度で0から120km/hまで加速するために必要な時間を測定し、加速性を評価した。冷機時加速性は、恒温室に試験車両を置き、25℃の一定温度で一昼夜放置した後、シャーシダイナモ(負荷条件は、ロードロードに設定)上で試験車のエンジンを始動させ、加速時間を測定した。暖機時加速性は、十分に暖機した後にエンジンを再始動させ、同様にして試験した。実験の精度を高めるため、評価対象の供試油と供試油5(市販ガソリン)をそれぞれ交互に5回測定し、供試油5による加速時間を100%とした相対値の平均を%単位で求めた。その結果を表3に示す。
【0025】
【発明の効果】
本発明による炭化水素系燃料組成物は、リサーチ法オクタン価が89以上、芳香族分が10容量%以上15容量%以下、硫黄分が1ppm以下、5%留出温度が25℃以上、50%留出温度が70℃以上100℃以下、95%留出温度が190℃以下、かつ、水素と炭素の原子比(H/C比)が2.0以上であるため、水蒸気改質装置を備えた燃料電池に用いることができるとともに、ガソリン機関用燃料としても利用することができる。このため、供給経路を単純化でき、間違って使用されることもない。さらに、ガソリン機関用燃料としても、排気ガス特性に優れるものであり、環境に対する影響を少なくすることが可能となる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to fuel for automobiles and the like, and is environmentally friendly as fuel for gasoline internal combustion engines. At the same time, it can be used as fuel for fuel cells for driving fuel cells with hydrogen taken out by steam reforming of the fuel. The present invention relates to a suitable hydrocarbon fuel composition.
[0002]
[Prior art]
In recent years, a combination of a fuel cell and an electric motor has attracted attention as a power source for automobiles. When hydrogen is used as a fuel for a fuel cell, it is difficult to store and transport hydrogen itself. For this reason, attention has been paid to a technique of using a hydrocarbon fuel, which is easy to handle, and a liquid fuel such as alcohol by steam reforming to take out hydrogen and using it as a fuel for a fuel cell.
[0003]
[Problems to be solved by the invention]
When such a liquid fuel is used as a hydrogen source for an automobile, it is necessary to disperse and arrange many supply stations as in the current so-called gas station and deliver the fuel to the supply stations. However, in order to efficiently extract hydrogen by steam reforming, characteristics different from those of the current gasoline engine fuel (so-called gasoline) are required. Therefore, it is necessary to install an oil refining process, storage tank, delivery equipment, refueling equipment, etc. for hydrocarbon fuel for fuel cells separately from fuel for gasoline automobiles. A large investment is required to increase the distribution and supply facilities. In the popularization process of fuel cell vehicles, the amount of fuel used is small compared with the current gasoline for gasoline engines, so the fuel cell fuel manufacturing and delivery costs are relatively high.
[0004]
Further, in an automobile using both a gasoline engine and a fuel cell, two types of fuel tanks are required for each fuel. Furthermore, when handling both gasoline engine fuel and fuel cell hydrocarbon fuel at the same fueling station, there is a risk of misfeeding.
[0005]
The present invention solves the above-described problems, and an object of the present invention is to provide a fuel cell fuel that has a low overall supply cost and does not cause a problem in handling.
[0006]
[Means for Solving the Problems]
The inventor has conceived that the above object can be achieved by developing a fuel that can be used as a fuel for gasoline engines and a hydrocarbon fuel for fuel cells, and has completed the present invention. The hydrocarbon fuel composition according to the present invention has a research octane number of 89 or more, an aromatic content of 10 to 15% by volume, a sulfur content of 1 ppm or less, a 5% distillation temperature of 25 ° C. or more and a 50% distillation. The exit temperature is 75 ° C. or more and 100 ° C. or less, the 95% distillation temperature is 190 ° C. or less, and the atomic ratio of hydrogen to carbon (H / C ratio) is 2.0 or less. In particular, it is preferable to contain 5 to 30% by weight of alcohol or ether having a boiling point of 25 to 190 ° C. and 70 to 95% by weight of hydrocarbon.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The hydrocarbon fuel composition according to the present invention has a research octane number of 89 or more, preferably 89 or more and 100 or less, more preferably 89 or more and 92 or less. When it is too low, it is not preferable because it becomes easy to knock when the gasoline engine is operated, particularly when accelerating uphill. The research method octane number can be measured by JIS K 2280 “Octane number test method”.
[0008]
The hydrocarbon fuel composition according to the present invention has an aromatic content of 10% by volume to 15% by volume. The content of the aromatic component can be measured by “Fuel hydrocarbon component test method (fluorescent indicator adsorption method)” of JIS K2536.
[0009]
The hydrocarbon fuel composition according to the present invention has a sulfur content of 1 mass ppm or less, preferably 0.5 mass ppm or less. The sulfur content can be measured by “microcoulometric titration method” of JIS K2541.
[0010]
The hydrocarbon fuel composition according to the present invention has a 5% distillation temperature of 25 ° C or higher, a 50% distillation temperature of 70 ° C or higher and 100 ° C or lower, and a 95% distillation temperature of 190 ° C or lower. The 5% distillation temperature is 25 ° C or higher, preferably 40-50 ° C. Below this, there will be many restrictions on the handling of fuel. The 30% distillation temperature is preferably 40 to 80 ° C., more preferably 55 to 70 ° C., from the viewpoint of acceleration during gasoline engine operation. The 50% distillation temperature is 70 to 100 ° C., preferably 80 to 95 ° C., from the viewpoint of acceleration performance, particularly acceleration performance when the vehicle is cold. If the 50% distillation temperature exceeds 100 ° C, the acceleration performance when the vehicle is cold is deteriorated. Also, if the 50% distillation temperature is less than 70 ° C, not only the acceleration performance will deteriorate, but vapor lock, percolation, etc. will occur, which will adversely affect the heat resistance performance. Etc. The 70% distillation temperature is preferably 95 to 120 ° C, particularly 105 to 115 ° C. The 95% distillation temperature is 190 ° C. or less, preferably 150 to 170 ° C., from the viewpoint of acceleration performance and exhaust gas performance when the vehicle is cold. Distillation properties such as 5% distillation temperature can be measured by the method defined in “JIS K 2254”, “Fuel oil distillation test method”.
[0011]
The hydrocarbon fuel composition according to the present invention has an atomic ratio of hydrogen to carbon (H / C ratio) of 2.0 or more, preferably 2.0 to 2.2, more preferably 2.0 to 2.1. is there. When the H / C ratio is less than 2.0, the amount of hydrogen taken out from the steam reforming is reduced. When the H / C ratio exceeds 2.2, the fuel consumption decreases as a fuel for a gasoline internal combustion engine. The atomic ratio of hydrogen to carbon (H / C ratio) can be specified by elemental analysis of the fuel composition.
[0012]
The hydrocarbon fuel composition according to the present invention may contain 5 to 30% by weight, preferably 10 to 20% by weight, of an alcohol or ether having a boiling point of 25 ° C to 190 ° C. Examples of such alcohols include ethanol, propanol, and butanol, and examples of ethers include methyl-t-butyl ether, ethyl-t-butyl ether, methyl-sec-butyl ether, and t-amyl methyl ether. In particular, methyl tertiary butyl ether (MTBE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME) and the like are preferably used because of their high octane number and good steam reforming efficiency.
[0013]
Further, the hydrocarbon fuel composition according to the present invention has a density at 15 ° C. of 0.70 to 0.75 g / cm 3 , particularly 0.705 to 0.717 g / cm 3 , JIS K 2261 “Petroleum products— It is preferable that the unwashed actual gum according to “automobile gasoline and aviation fuel oil-existing gum test method-injection evaporation method” is 2 mg / 100 mL or less.
[0014]
The hydrocarbon fuel composition according to the present invention comprises (1) straight-run naphtha obtained by atmospheric distillation of crude oil, (2) desulfurized naphtha obtained by desulfurizing straight-run naphtha, and (3) desulfurized heavy naphtha by catalytic reforming treatment. Reformed gasoline obtained from the above, (4) oil cracking from light oil to reduced pressure light oil, degasified oil obtained from heavy oil indirect desulfurization equipment, direct desulfurization oil obtained from heavy oil direct desulfurization equipment, atmospheric pressure residual oil, etc. by catalytic cracking A catalytically cracked gasoline base obtained from the above, (5) alkylate obtained by reacting a lower olefin and isobutane in the presence of an acid catalyst, (6) an isomerate obtained by subjecting light naphtha to contact treatment and isomerization to increase the octane number, (7) Can be produced by appropriately selecting butane, isopentane, etc. obtained by precision distillation of crude oil and LPG fractions recovered from various secondary refining equipment, light naphtha, etc. In addition to petroleum-based raw materials, paraffinic hydrocarbons obtained from Fischer-Tropsch synthesis from coal or natural gas can also be used as raw materials.
[0015]
(4) The catalytic cracking gasoline base is a solid acid such as amorphous silica alumina, zeolite, etc. by a fluid catalytic cracking method using a wide range of petroleum fractions from kerosene oil to atmospheric residual oil, preferably heavy gas oil or vacuum gas oil. It is preferable that the research octane number obtained by decomposition with a catalyst is 89 to 92, the initial boiling point is 25 to 40 ° C, and the 90% distillation temperature is 70 to 90 ° C. The catalytic cracking apparatus is, for example, fluid catalytic cracking method such as UOP catalytic cracking method, flexi cracking method, ultra ortho flow method, texaco fluid catalytic cracking method described in “New Oil Refining Process” edited by Petroleum Society, RCC method, HOC There are residual oil fluid catalytic cracking methods.
[0016]
(5) An alkylate is obtained by reacting isobutane and a lower olefin (butene, propylene, etc.) in the presence of an acid catalyst (sulfuric acid, hydrofluoric acid, aluminum chloride, etc.). Those containing 60% by volume or more are preferred, and among them, those having a research octane number of 92 or more can be preferably used.
[0017]
The hydrocarbon fuel composition according to the present invention can be blended with known fuel additives as required. Although these compounding quantities can be selected suitably, it is usually preferable to set it as 0.1 weight% or less as a total amount of an additive. Examples of additives that can be used in the hydrocarbon fuel composition of the present invention include amine-based, phenol-based, aminophenol-based antioxidants, Schiff-type compounds, metal deactivators such as thioamide-type compounds, Surface ignition inhibitors such as organic phosphorus compounds, detergents and dispersants such as succinimides, polyalkylamines and polyetheramines, anti-icing agents such as polyhydric alcohols and ethers, alkali metal salts and alkaline earths of organic acids Auxiliary agents such as metal salts, higher alcohol sulfates, anionic surfactants, cationic surfactants, amphoteric surfactants, rust inhibitors such as alkenyl succinates, quinizarin, coumarins, etc. Examples thereof include colorants such as discriminating agents and azo dyes.
[0018]
【Example】
Hereinafter, the present invention will be described more specifically based on examples, but the present invention is not limited to these examples.
[0019]
Table 1 shows the properties of alkylate, straight-run light naphtha, isopentane fraction, reformed gasoline, and heavy catalytic cracked gasoline, which are base materials used in the production of the examples. These base materials were blended in the blending amounts shown in Table 2, and sample oils 1 to 4 were prepared. Table 2 shows the characteristics of commercially available regular gasoline used for comparison as test oil 5.
[0020]
[Table 1]
Figure 0003940885
[0021]
[Table 2]
Figure 0003940885
[0022]
[Exhaust gas test] Exhaust gas tests were conducted on the test oils 1 to 4 in the 10.15 mode to obtain concentrations of carbon monoxide, total hydrocarbons, and nitrogen oxides. As a test vehicle, “Accord” (valve type: OHC, compression ratio: 9.4, displacement: 1.8 L, fuel supply method: PFI) manufactured by Honda Motor Co., Ltd. was used. Table 3 shows the measurement results.
[0023]
[Table 3]
Figure 0003940885
[0024]
[Acceleration test] The time required to accelerate from 0 to 120 km / h at a 1/4 throttle opening was measured to evaluate the acceleration performance. For cold acceleration, place the test vehicle in a temperature-controlled room, leave it at a constant temperature of 25 ° C for a whole day and night, start the test vehicle engine on the chassis dynamo (load condition is set to road load), and increase the acceleration time. It was measured. The warm-up acceleration property was tested in the same manner after restarting the engine after sufficiently warming up. In order to increase the accuracy of the experiment, the test oil to be evaluated and the test oil 5 (commercial gasoline) were measured alternately five times, and the average of the relative values with the acceleration time by the test oil 5 as 100% was expressed in% I asked for it. The results are shown in Table 3.
[0025]
【The invention's effect】
The hydrocarbon fuel composition according to the present invention has a research octane number of 89 or more, an aromatic content of 10 to 15% by volume, a sulfur content of 1 ppm or less, a 5% distillation temperature of 25 ° C. or more and a 50% distillation. Since the distillation temperature is 70 ° C. or higher and 100 ° C. or lower, the 95% distillation temperature is 190 ° C. or lower, and the atomic ratio of hydrogen to carbon (H / C ratio) is 2.0 or higher, a steam reformer is provided. It can be used for a fuel cell and can also be used as a fuel for a gasoline engine. For this reason, a supply path can be simplified and it cannot be used accidentally. Further, the fuel for a gasoline engine is also excellent in exhaust gas characteristics, and the influence on the environment can be reduced.

Claims (2)

リサーチ法オクタン価が89以上、芳香族分が10容量%以上15容量%以下、硫黄分が1ppm以下、5%留出温度が25℃以上、50%留出温度が70℃以上100℃以下、95%留出温度が190℃以下、かつ、水素と炭素の原子比(H/C比)が2.0以上、である炭化水素系燃料組成物。Research octane number is 89 or more, aromatic content is 10 vol% or more and 15 vol% or less, sulfur content is 1ppm or less, 5% distillation temperature is 25 ° C or more, 50% distillation temperature is 70 ° C or more and 100 ° C or less, 95 A hydrocarbon-based fuel composition having a% distillation temperature of 190 ° C. or lower and an atomic ratio of hydrogen to carbon (H / C ratio) of 2.0 or higher. 沸点が25℃〜190℃であるアルコールまたはエーテルを5〜30重量%、炭化水素を70〜95重量%含有する請求項1記載の炭化水素系燃料組成物。  The hydrocarbon fuel composition according to claim 1, comprising 5 to 30% by weight of alcohol or ether having a boiling point of 25 to 190 ° C and 70 to 95% by weight of hydrocarbon.
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