JP3834686B2 - Fuel oil composition - Google Patents
Fuel oil composition Download PDFInfo
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- JP3834686B2 JP3834686B2 JP15468398A JP15468398A JP3834686B2 JP 3834686 B2 JP3834686 B2 JP 3834686B2 JP 15468398 A JP15468398 A JP 15468398A JP 15468398 A JP15468398 A JP 15468398A JP 3834686 B2 JP3834686 B2 JP 3834686B2
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Description
【0001】
【発明の属する技術分野】
本発明は、燃料油組成物に関するものである。特にガスタービンをはじめとする内燃機関または外燃機関において使用するもので、該機関の構成要件の高温腐食や摩耗、該機関の流路への灰分の付着が起こり難く、低温流動性並びに常温における流動性に優れた燃料油組成物に関するものである。
【0002】
【従来の技術】
一般にA重油は、A重油基油に、残炭調整材として常圧残油、減圧残油、脱硫残油等の残油を混合して製造される。しかし、ここで問題になるのがこれら常圧残油、減圧残油、脱硫残油等の残油基材中には、通常バナジウム分、ナトリウム分、カリウム分等の金属分が含まれていることである。このうちバナジウム分は燃焼場で融点が690℃の五酸化二バナジウムのような低融点の化合物を形成し、燃焼機器に使用されている金属材料に対して激しい腐食作用を及ぼす。また、ナトリウム分およびカリウム分はバナジウム分と化合して500℃〜600℃で融解する共晶を形成し、かつ燃料中の硫黄と化合して融点が880℃の硫酸ナトリウムおよび1070℃の硫酸カリウムを生成するなどするため、燃焼機器の構成要素に付着し腐食を起こす。
【0003】
従って、一般的にはナトリウム分、カリウム分、バナジウム分などの有害な灰分成分を含む燃料油に対しては、まず、燃料油に水を5〜10%加えてその中に水溶性のナトリウム分、カリウム分を溶け込ませ、遠心分離器により、その水を除いた後、マグネシウムを添加してバナジウム酸化物の融点を上げるなどの前処理をして腐食作用を緩和してから使用する。
【0004】
しかしながら、上記のようなナトリウム分、カリウム分を取り除き、バナジウム分の作用を打ち消す前処理方法は装置自体、非常に高価かつ大がかりになってしまう上にランニングコストが必要である。かつバナジウム分は除去されずに残されるため、摩耗に対しては根本的な解決策とはならない。
また、低温流動性向上効果を改良するために通常使用している低温流動性向上剤を添加する場合があるが、前記の残油には低温流動性向上剤の低温流動性向上効果を阻害する成分が含まれている場合がある。
【0005】
また別の方法として低温流動性向上効果を改良するためにナトリウム分、カリウム分、バナジウム分などの金属分を含まない灯油、軽油等の液体燃料を多量添加使用しているが、金属分を含まない灯油、軽油等の液体燃料を使用する場合、いずれもA重油より高価であり、経済上好ましくない。
【0006】
【発明が解決しようとする課題】
本発明はガスタービンをはじめとする内燃機関または外燃機関において使用するもので、該機関の構成要件の高温腐食や該機関の流路への灰分の付着が起こり難く、さらに低温流動性並びに常温における流動性に優れた燃料油組成物を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明者らは、鋭意研究を行った結果、特定の炭化水素油を添加することにより、前記の目的を達成することができた。
【0008】
すなわち本発明は、A重油基油およびヘビーサイクル油を含有する燃料油組成物であって、燃料油組成物中の10%残留炭素分が0.2質量%を超え、バナジウム分、カリウム分、ナトリウム分がそれぞれ0.1質量ppm以下であることを特徴とする燃料油組成物に関する。
【0009】
【発明の実施の形態】
以下本発明を詳細に説明する。
本発明で用いるA重油基油とは原油を蒸留して得られる沸点150〜400℃程度の範囲にある留出油である。A重油基油の製造基材としては、具体的には例えば、原油を常圧蒸留して得られる留出油;減圧軽油または原油の蒸留残渣油の水素化分解により得られる留出油;減圧軽油、減圧重質軽油あるいは脱硫重油を接触分解して得られる留出油等が挙げられる。本発明のA重油基油は、上記したA重油基油製造基材油の1種または2種以上を混合して製造される。
【0010】
本発明で用いるヘビーサイクル油とは、接触分解装置から得られる軽油留分のうち重質成分である。ヘビーサイクル油の沸点範囲は、接触分解装置の種類および運転方法により若干異なるが170〜450℃程度である。さらに詳しく言えば、T10が200℃以上が好ましく、210℃以上がより好ましく、220℃以上のものがさらにより好ましい。また、T50が280℃以上が好ましく、300℃以上がより好ましく、320℃以上がさらにより好ましい。また、T90が360℃以上が好ましく、380℃以上がより好ましく、400℃以上であることがさらにより好ましい。
なお、上記においてT10、T50およびT90は、それぞれJIS K 2254「石油製品−蒸留試験方法」に準拠して測定される10容量%留出温度、50容量%留出温度および90容量%留出温度を表す。
【0011】
一般に、沸点範囲が低いと10%残留炭素分が少なくなる。この場合、所望の燃料油組成物を調製するためには、ヘビーサイクル油を増量する必要がある。しかしながら、この場合A重油基油とヘビーサイクル油との相溶性に問題が生じる可能性があるため、上記のような沸点範囲を示すことが好ましい。
【0012】
上記ヘビーサイクル油中の10%残留炭素分にはなんら制限はないが、通常10質量%以下、好ましくは5質量%以下のものが用いられる。
【0013】
本発明で用いられるヘビーサイクル油は、残炭調整材として用いられるものであり、本発明の燃料油組成物中10%残留炭素分が0.2質量%を超えるようにA重油基油と混合される。10%残留炭素分が0.2質量%以下の場合「10%残油の残留炭素分0.2質量%を超える」という軽油引取税からのA重油に対する免税条件を満たさなくなる。10%残留炭素分の上限値については何ら制限はないが、低温流動性の点から好ましくは5質量%以下、より好ましくは2質量%以下、さらにより好ましくは0.6質量%以下であることが望ましい。また、10%残留炭素分を多くするためには、残炭調整材であるヘビーサイクル油の含有量を増量させなければならないが、この場合A重油基油とヘビーサイクル油との相溶性に問題が生じる可能性がある。
【0014】
なお、本発明でいう10%残留炭素分とは、JIS K 2270「原油及び石油製品−残留炭素分試験方法」に準拠して測定される10%残油残留炭素分を表す。
【0015】
ヘビーサイクル油の配合量については、特に制限はなくヘビーサイクル油中の10%残留炭素分の量およびこれを配合して調製される燃料油組成物中の10%残留炭素分の量に応じて決められる。しかしながら、A重油基油とヘビーサイクル油との相溶性の点から、通常燃料油組成物全量基準で10〜50質量%、好ましくは20〜40質量%配合される。
【0016】
また、本発明の燃料油組成物は、バナジウム分、カリウム分、ナトリウム分がそれぞれ0.1質量ppm以下であることが必要である。これらの金属分は燃焼場で融点の低い酸化物(灰分)を生成するため、ガスタービンをはじめとするA重油使用の内燃機関、あるいは外燃機関において、構成要素の高温腐食や、流路への灰分の付着が起こり、燃焼機関の耐久性、メンテナンス性が悪くなり、また経済性が悪くなるので少ない方が望ましい。
【0017】
本発明の燃料油組成物は、残炭調整材としてヘビーサイクル油を用いているため、低温流動性、常温流動性、色相等に優れ、かつ内燃機関や外燃機関の構成要件の高温腐食や摩耗、該機関の流路への灰分の付着が起こり難い。しかしながら、使用環境によっては低温流動性をさらに改良する必要性が生じる場合がある。この場合には、低温流動性向上剤や灯油、軽油等の軽質油を添加することができる。
【0018】
低温流動性向上剤の添加量としては燃料油全量基準で1000容量ppm以下、好ましくは1〜500容量ppm、特に好ましくは10〜300容量ppmである。1000容量ppmを超えて添加してもコストに見合うだけの低温流動性は得難い。
【0019】
低温流動性向上剤としては、公知の各種の添加剤を使用することができる。具体的は「新版石油製品添加剤」(桜井俊男編著、幸書房昭和61年7月発行)第192頁〜第195頁に記載の物質、より具体的にはエチレン−酢酸ビニル系共重合体、エチレン−アルキルアクリレート系共重合体、塩素化ポリエチレン、ポリアルキルアクリレート、アルケニルこはく酸アミド系化合物等が例示できる。また、軽質油の添加量としては、燃料油全量基準で5〜50容量%の範囲が好ましい。
【0020】
本発明で用いるヘビーサイクル油は、従来用いられている残油のように低温流動性向上剤の低温流動性向上効果を阻害することがないため、低温流動性をさらに向上させる必要が生じた場合でも、比較的高価な軽質油を使用することなく低温流動性向上剤の増量で対応できる。従って、従来の残油添加品に比べて経済的であり、かつ燃焼性に及ぼす影響も少ない。なお、低温流動性を向上させるために、低温流動性向上剤および軽質油を併用して用いることができることは言うまでもない。
【0021】
本発明の燃料油組成物は、ヘビーサイクル油を残炭調整材として用いるものであるが、その優れた効果を損なわない範囲でその他の残炭調整材を併用して用いることができる。その他の残炭調整材としては、常圧残油、減圧残油、脱硫残油、スラリーオイル、エキストラクト、ハール油、プリフラボトム油等が挙げられる。
【0022】
本発明の燃料油組成物の性能をさらに高める目的で、その他の公知の燃料油添加剤を単独で、または数種類組み合わせて添加することができる。これら添加剤としては、例えば、フェノール系、アミン系などの酸化防止剤;サリチリデン誘導体などの金属不活性化剤;アルケニルこはく酸イミド、ポリアルキルアミンなどの清浄分散剤;ポリグリコールエーテルなどの氷結防止剤;脂肪族アミン、アルケニルこはく酸エステルなどの腐食防止剤;アニオン系、カチオン系、両性系界面活性剤などの帯電防止剤;アゾ染料などの着色剤;などを挙げることができる。
【0023】
これらその他の添加剤の添加量は任意に決めることができるが、添加剤個々の添加量は、燃料油組成物全量基準でそれぞれ0.5質量%以下、好ましくは0.2質量%以下であるのが通常である。
【0024】
本発明の燃料油組成物の用途はすべてのA重油用燃焼機器に適用されるものであるが、一般ボイラー等の外燃機関の場合これらの高温腐食の影響は受けにくい構造になっているので、内燃機関用に適用した場合に有用である。さらに、高温腐食に対して非常に影響を受けやすいガスタービン用に適用した場合に特に有用である。
【0025】
【実施例】
以下に本発明を実施例および比較例を挙げて説明する。
実施例および比較例で用いたA重油基油、残炭調整材、軽質油の性状を表1に示す。また、低温流動性向上剤としては、エチレン−酢酸ビニル系共重合体(酢酸ビニル含有量35質量%、数平均分子量3000)を用いた。
【0026】
【表1】
【0027】
(実施例1〜3)
表1に示す上記各原料を、表2に示す割合で配合し本発明にかかる燃料油組成物を調製した。各試料油の性状を併せて表2に示す。
得られた各試料油について、フィルター性評価、腐食評価、低温流動性評価を行った。結果を表2に併記する。なお、各評価の方法は以下の通りである。
【0028】
(比較例1〜3)
表1に示す上記各原料を、表2に示す割合で配合し比較のための燃料油組成物を調製した。各試料油の性状を併せて表2に示す。
得られた各試料油について、実施例1〜3と同様にしてフィルター性評価、腐食評価、低温流動性評価を行った。結果を表2に併記する。
【0029】
(フィルター性評価)
実機シミュレート法は、常温での目詰まりを評価する方法であり、A重油の低温流動性評価方法である実機シミュレート法(JPI−5S−47−96)の試験装置を利用し、フィルター前後の差圧を測定した。試験条件は10℃、通油量は9.5L/H、フィルター目開きは8μmで行った。
【0030】
(腐食評価)
試料油1Lを試料皿に入れ、バーナで燃焼させて残渣物(重油中の金属に由来する酸化物)の重量を測定した。燃焼後の酸化物量は、重油中の金属分が機関に及ぼす腐食性および摩耗性の指標となる。
【0031】
(低温流動性評価)
修正CFPP試験法は、低温流動性を評価する方法であり、軽油の目詰まり点試験方法(JIS−K2288)に準拠し、フィルター目開きは44μm、冷却速度は1℃/hで行った。
【0032】
表2の結果から明らかなように、いずれの実施例もフィルター性評価、腐食評価、低温流動性評価の結果が良好である。これに対して、残炭調整材として常圧残油を用いた比較例の場合には、何れの評価においても良好な結果が得られなかった。
【0033】
【表2】
【0034】
【発明の効果】
本発明の燃料油組成物は、ガスタービンをはじめとする内燃機関または外燃機関において使用するもので、該機関の構成要件の高温腐食や該機関の流路への灰分の付着が起こり難く、さらに低温流動性並びに常温における流動性に優れている。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fuel oil composition. Particularly used in internal combustion engines and external combustion engines including gas turbines, high temperature corrosion and wear of the constituent elements of the engine, ash is less likely to adhere to the engine flow path, low temperature fluidity and normal temperature The present invention relates to a fuel oil composition having excellent fluidity.
[0002]
[Prior art]
In general, A heavy oil is produced by mixing residual oil such as atmospheric residual oil, reduced pressure residual oil, desulfurized residual oil, etc. as a residual coal adjusting material with A heavy oil base oil. However, what is a problem here is that these residual base materials such as atmospheric residual oil, vacuum residual oil, desulfurized residual oil, etc. usually contain metal components such as vanadium, sodium and potassium. That is. Among these, the vanadium component forms a low melting point compound such as divanadium pentoxide having a melting point of 690 ° C. in the combustion field, and exerts a severe corrosive action on the metal material used in the combustion equipment. The sodium and potassium components combine with vanadium to form a eutectic that melts at 500 ° C. to 600 ° C., and combines with sulfur in the fuel to have a melting point of 880 ° C. sodium sulfate and 1070 ° C. potassium sulfate. In order to generate, etc., it adheres to the components of combustion equipment and causes corrosion.
[0003]
Therefore, generally for fuel oils containing harmful ash components such as sodium, potassium, vanadium, etc., first add 5-10% of water to the fuel oil and add water-soluble sodium content therein. Then, after dissolving the potassium content and removing the water with a centrifuge, the pretreatment such as adding magnesium to increase the melting point of the vanadium oxide is used to reduce the corrosive action before use.
[0004]
However, the pretreatment method for removing the sodium and potassium contents and canceling the action of the vanadium as described above becomes very expensive and large in size, and requires a running cost. And since the vanadium content is left unremoved, it is not a fundamental solution to wear.
In addition, a low-temperature fluidity improver that is usually used to improve the low-temperature fluidity improvement effect may be added, but the residual oil inhibits the low-temperature fluidity improvement effect of the low-temperature fluidity improver. Ingredients may be included.
[0005]
Another method is to add a large amount of liquid fuel such as kerosene or light oil that does not contain metals such as sodium, potassium and vanadium in order to improve the low temperature fluidity improvement effect. In the case of using liquid fuel such as kerosene and light oil that are not used, they are both more expensive than heavy oil A and are not economically preferable.
[0006]
[Problems to be solved by the invention]
The present invention is used in an internal combustion engine or an external combustion engine such as a gas turbine, and is not subject to high temperature corrosion and adhesion of ash to the flow path of the engine. It aims at providing the fuel oil composition excellent in the fluidity | liquidity in.
[0007]
[Means for Solving the Problems]
As a result of intensive studies, the inventors have been able to achieve the above object by adding a specific hydrocarbon oil.
[0008]
That is, the present invention is a fuel oil composition containing A heavy oil base oil and heavy cycle oil, the 10% residual carbon content in the fuel oil composition exceeds 0.2 mass%, vanadium content, potassium content, The present invention relates to a fuel oil composition having a sodium content of 0.1 mass ppm or less.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
The A heavy oil base oil used in the present invention is a distillate having a boiling point of about 150 to 400 ° C. obtained by distilling crude oil. Specific examples of the base material for producing A heavy oil base oil include, for example, a distillate obtained by atmospheric distillation of crude oil; a distillate obtained by hydrocracking a vacuum gas oil or a distillation residue of crude oil; Examples include distillate oil obtained by catalytic cracking of light oil, vacuum heavy gas oil or desulfurized heavy oil. The A heavy oil base oil of the present invention is produced by mixing one or more of the A heavy oil base oil production base oils described above.
[0010]
The heavy cycle oil used in the present invention is a heavy component in the light oil fraction obtained from the catalytic cracking apparatus. The boiling range of heavy cycle oil is about 170 to 450 ° C., although it varies slightly depending on the type and operation method of the catalytic cracker. More specifically, T 10 is preferably 200 ° C. or higher, more preferably 210 ° C. or higher, and even more preferably 220 ° C. or higher. T 50 is preferably 280 ° C. or higher, more preferably 300 ° C. or higher, and even more preferably 320 ° C. or higher. Further, T 90 is preferably 360 ° C. or higher, more preferably 380 ° C. or higher, and even more preferably 400 ° C. or higher.
In the above, T 10 , T 50 and T 90 are respectively 10% by volume distillation temperature, 50% by volume distillation temperature and 90% by volume measured according to JIS K 2254 “Petroleum products-distillation test method”. Represents the distillation temperature.
[0011]
Generally, 10% residual carbon content decreases when the boiling range is low. In this case, in order to prepare a desired fuel oil composition, it is necessary to increase the amount of heavy cycle oil. However, in this case, since there may be a problem in the compatibility between the A heavy oil base oil and the heavy cycle oil, it is preferable to exhibit the above boiling range.
[0012]
Although there is no restriction | limiting in 10% residual carbon content in the said heavy cycle oil, The thing of 10 mass% or less normally, Preferably 5 mass% or less is used.
[0013]
The heavy cycle oil used in the present invention is used as a residual coal adjuster, and is mixed with the A heavy oil base oil so that the 10% residual carbon content in the fuel oil composition of the present invention exceeds 0.2% by mass. Is done. When the 10% residual carbon content is 0.2% by mass or less, the tax exemption condition for heavy fuel oil A from the diesel oil take-off tax that “the residual carbon content of 10% residual oil exceeds 0.2% by mass” is not satisfied. The upper limit of the 10% residual carbon content is not limited, but is preferably 5% by mass or less, more preferably 2% by mass or less, and even more preferably 0.6% by mass or less from the viewpoint of low temperature fluidity. Is desirable. In order to increase the residual carbon content of 10%, it is necessary to increase the content of heavy cycle oil, which is a residual coal modifier, but in this case, there is a problem with the compatibility between the A heavy oil base oil and the heavy cycle oil. May occur.
[0014]
The 10% residual carbon content in the present invention represents a 10% residual carbon residual carbon content measured according to JIS K 2270 “Crude oil and petroleum products—residual carbon content test method”.
[0015]
The amount of heavy cycle oil blended is not particularly limited, depending on the amount of 10% residual carbon in heavy cycle oil and the amount of 10% residual carbon in the fuel oil composition prepared by blending this. It is decided. However, from the viewpoint of compatibility between the A heavy oil base oil and the heavy cycle oil, it is usually blended in an amount of 10 to 50% by mass, preferably 20 to 40% by mass, based on the total amount of the fuel oil composition.
[0016]
Further, the fuel oil composition of the present invention needs to have a vanadium content, a potassium content, and a sodium content of 0.1 mass ppm or less, respectively. Since these metals generate oxides (ash) with a low melting point in the combustion field, in internal combustion engines using heavy fuel oil such as gas turbines, or external combustion engines, high-temperature corrosion of components, or to the flow path Adhesion of ash occurs and the durability and maintainability of the combustion engine deteriorate, and the economical efficiency deteriorates.
[0017]
Since the fuel oil composition of the present invention uses heavy cycle oil as a residual coal adjuster, it is excellent in low temperature fluidity, room temperature fluidity, hue, and the like, and high temperature corrosion and component requirements of internal combustion engines and external combustion engines. Wear and adhesion of ash to the engine flow path hardly occur. However, depending on the usage environment, it may be necessary to further improve the low-temperature fluidity. In this case, a light oil such as a low temperature fluidity improver, kerosene, or light oil can be added.
[0018]
The addition amount of the low temperature fluidity improver is 1000 ppm by volume or less, preferably 1 to 500 ppm by volume, particularly preferably 10 to 300 ppm by volume, based on the total amount of fuel oil. Even when added in excess of 1000 ppm by volume, it is difficult to obtain low-temperature fluidity commensurate with the cost.
[0019]
Various known additives can be used as the low temperature fluidity improver. Specifically, “New Version Petroleum Product Additives” (edited by Toshio Sakurai, published by Shoshobo in July 1986), the materials described on pages 192 to 195, more specifically, ethylene-vinyl acetate copolymers, Examples include ethylene-alkyl acrylate copolymers, chlorinated polyethylene, polyalkyl acrylates, alkenyl succinic acid amide compounds, and the like. Further, the amount of light oil added is preferably in the range of 5 to 50% by volume based on the total amount of fuel oil.
[0020]
The heavy cycle oil used in the present invention does not hinder the low temperature fluidity improvement effect of the low temperature fluidity improver as in the case of conventionally used residual oil, so that it is necessary to further improve the low temperature fluidity However, it can be handled by increasing the low-temperature fluidity improver without using relatively expensive light oil. Therefore, it is more economical than conventional residual oil-added products and has little effect on combustibility. Needless to say, a low temperature fluidity improver and light oil can be used in combination to improve low temperature fluidity.
[0021]
Although the fuel oil composition of the present invention uses heavy cycle oil as a residual coal modifier, other residual coal modifiers can be used in combination as long as the excellent effects are not impaired. Examples of other residual coal modifier include atmospheric residual oil, vacuum residual oil, desulfurized residual oil, slurry oil, extract, haar oil, pre-fura bottom oil, and the like.
[0022]
In order to further improve the performance of the fuel oil composition of the present invention, other known fuel oil additives can be added alone or in combination of several kinds. These additives include, for example, phenolic and amine antioxidants; metal deactivators such as salicylidene derivatives; alkenyl succinimides, polyalkylamines and other detergents; and anti-freezing agents such as polyglycol ethers. Agents; corrosion inhibitors such as aliphatic amines and alkenyl succinic acid esters; antistatic agents such as anionic, cationic and amphoteric surfactants; and colorants such as azo dyes.
[0023]
The addition amount of these other additives can be arbitrarily determined, but the addition amount of each additive is 0.5% by mass or less, preferably 0.2% by mass or less, based on the total amount of the fuel oil composition. It is normal.
[0024]
The use of the fuel oil composition of the present invention is applicable to all combustion equipment for heavy oil A. However, in the case of an external combustion engine such as a general boiler, the structure is not easily affected by these high-temperature corrosions. This is useful when applied to an internal combustion engine. Furthermore, it is particularly useful when applied to gas turbines that are very sensitive to hot corrosion.
[0025]
【Example】
Hereinafter, the present invention will be described with reference to examples and comparative examples.
Table 1 shows the properties of the A heavy oil base oil, the residual coal modifier, and the light oil used in Examples and Comparative Examples. As the low temperature fluidity improver, an ethylene-vinyl acetate copolymer (vinyl acetate content 35 mass%, number average molecular weight 3000) was used.
[0026]
[Table 1]
[0027]
(Examples 1-3)
The above-mentioned raw materials shown in Table 1 were blended in the proportions shown in Table 2 to prepare a fuel oil composition according to the present invention. Table 2 shows the properties of each sample oil.
About each obtained sample oil, filter property evaluation, corrosion evaluation, and low-temperature fluidity | liquidity evaluation were performed. The results are also shown in Table 2. In addition, the method of each evaluation is as follows.
[0028]
(Comparative Examples 1-3)
The above-mentioned raw materials shown in Table 1 were blended in the proportions shown in Table 2 to prepare a fuel oil composition for comparison. Table 2 shows the properties of each sample oil.
About each obtained sample oil, filter property evaluation, corrosion evaluation, and low temperature fluidity | liquidity evaluation were performed like Examples 1-3. The results are also shown in Table 2.
[0029]
(Filter property evaluation)
The actual machine simulation method is a method for evaluating clogging at room temperature, using a test apparatus of the actual machine simulation method (JPI-5S-47-96), which is a low temperature fluidity evaluation method for heavy oil A, and before and after the filter. The differential pressure was measured. The test conditions were 10 ° C., the oil flow rate was 9.5 L / H, and the filter aperture was 8 μm.
[0030]
(Corrosion evaluation)
1 L of sample oil was placed in a sample pan and burned with a burner, and the weight of the residue (oxide derived from metal in heavy oil) was measured. The amount of oxide after combustion is an indicator of the corrosiveness and wearability of the metal in heavy oil on the engine.
[0031]
(Low temperature fluidity evaluation)
The modified CFPP test method is a method for evaluating low-temperature fluidity, which is based on a light oil clogging point test method (JIS-K2288), with a filter opening of 44 μm and a cooling rate of 1 ° C./h.
[0032]
As is clear from the results in Table 2, the results of filter property evaluation, corrosion evaluation, and low-temperature fluidity evaluation are good in all examples. On the other hand, in the case of the comparative example using the normal pressure residual oil as the residual coal adjusting material, good results were not obtained in any evaluation.
[0033]
[Table 2]
[0034]
【The invention's effect】
The fuel oil composition of the present invention is used in an internal combustion engine or an external combustion engine including a gas turbine. Furthermore, it is excellent in low temperature fluidity and room temperature fluidity.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15468398A JP3834686B2 (en) | 1998-06-03 | 1998-06-03 | Fuel oil composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15468398A JP3834686B2 (en) | 1998-06-03 | 1998-06-03 | Fuel oil composition |
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| Publication Number | Publication Date |
|---|---|
| JPH11349965A JPH11349965A (en) | 1999-12-21 |
| JP3834686B2 true JP3834686B2 (en) | 2006-10-18 |
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| GB2435884A (en) * | 2006-03-09 | 2007-09-12 | Infineum Int Ltd | Ethylene/vinyl ester and phenolic resin fuel additive package |
| JP5121210B2 (en) * | 2006-11-15 | 2013-01-16 | コスモ石油株式会社 | Low temperature fluid fuel composition |
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