JPH022919B2 - - Google Patents
Info
- Publication number
- JPH022919B2 JPH022919B2 JP19348082A JP19348082A JPH022919B2 JP H022919 B2 JPH022919 B2 JP H022919B2 JP 19348082 A JP19348082 A JP 19348082A JP 19348082 A JP19348082 A JP 19348082A JP H022919 B2 JPH022919 B2 JP H022919B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- fuel oil
- middle distillate
- oil
- distillate fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Liquid Carbonaceous Fuels (AREA)
Description
本発明は、流動性の改善された中留分燃料油組
成物に関する。
中留分燃料油の低温流動性改善のために灯油留
分を混合する方法は効果的である。しかし近年、
ジエツト燃料や家庭用燃料としての灯油需要が増
加してきたため、中留分燃料油への灯油混合をで
きるだけ減少させ、それに代つて低分子量エチレ
ン共重合体のような流動点降下剤を添加する試み
がなされている。しかしながら従来提案されてい
る流動点降下剤は、多くの場合、低温過器目詰
り点（CFPP）を実質的に低下させる働きを有し
ていなかつた。
特公昭54−19406号や特開昭54−155204号には、
前記のような流動点降下剤と共にある種の極性化
合物を添加するときに、燃料油のCFPPを低下さ
せることができると述べられている。しかしなが
ら、これら公報に具体的に開示されている極性化
合物を用いても、燃料油の種類によつてはほとん
どCFPPの低下が認められないことがあり、この
ような燃料油に対して効果的な添加剤の開発が望
まれていた。
本発明はかかる要請に応えるものであつて、そ
の要旨とするところは、中留分燃料油100重量部
に対し、油溶性エチレン系共重合体0.001ないし
0.1重量部及び炭素数27のステロール0.005ないし
0.1重量部を配合してなる中留分燃料油組成物で
ある。
本発明で用いられる中留分燃料油は、例えば沸
点範囲が150ないし500℃のものであつて、その代
表例として初留点が175ないし240℃、90％の留出
温度が300ないし400℃、流動点が−10ないし＋５
℃なる性状を有する燃料油を挙げることができ
る。例えば軽油、Ａ重油などを使用することがで
きる。
本発明で用いられる油溶性エチレン共重合体
は、通常エチレンを65ないし95モル％、好ましく
は70ないし93モル％含有するエチレンと炭素数３
以上のオレフインの共重合体又はエチレンとビニ
ル単量体の共重合体であり、室温において少なく
とも１ｇ／以上の割合で燃料油に溶解すること
ができる。その数平均分子量は通常1000ないし
50000、好ましくは1500ないし20000を示す。共重
合体の構成モノマーとなり得る上記炭素数３以上
のオレフインとしては、例えばプロピレン、１−
ブテン、１−ペンテン、１−ヘキセン、１−オク
テン、１−デセン、１−テトラデセン、４−メチ
ル−１−ペンテン、これら任意の２種以上のもの
などを例示することができる。また前記ビニル単
量体としては、酢酸ビニル、アクリル酸メチル、
アクリル酸エチル、メタクリル酸メチルなどを例
示することができる。
本発明の組成物においては、上記エチレン共重
合体に加えて炭素数27のステロールを併用する。
より具体的にはコレスタノール、コレステロー
ル、デヒドロコレステロール、コプロスタノー
ル、エピコプロスタノール、チイモステロールな
どのヒドロキシル基を１個有するものを好適例と
して例示することができる。これらのステロール
の代りに炭素数28〜30の如きステロールを使用し
ても実質的に添加効果は認められない。
油溶性エチレン共重合体は、中留分燃料油100
重量部に対し、0.001ないし0.1重量部、好ましく
は0.01ないし0.1重量部の割合で配合される。ま
た炭素数27のステロールは、中留分燃料油100重
量部に対し、0.005ないし0.1重量部、好ましくは
0.01ないし0.05重量部の割合で配合される。
本発明の組成物には必要を応じ、腐食防止剤、
酸化防止剤、安定剤、分散剤、その他の添加剤を
含有せしめることができる。
本発明によれば流動点及びCFPPの改良された
燃料組成物が提供できる。
次に実施例を示す。
実施例１〜７、比較例１〜12
燃料油100重量部に対し、各種添加剤を配合し
た場合のCFPPを測定した。使用した燃料油の性
状を第１表に、原料燃料油に対するCFPPの低下
を△CFPPとして第２表に示した。尚、CFPPは
Journal of the lnstitute Petroleum vol.52、No.
510記載の方法にしたがつて測定した。
The present invention relates to middle distillate fuel oil compositions with improved flowability. A method of mixing kerosene fractions is effective for improving the low-temperature fluidity of middle distillate fuel oil. However, in recent years,
As the demand for kerosene as a jet fuel and household fuel has increased, attempts have been made to reduce the amount of kerosene mixed into middle distillate fuel oils as much as possible, and instead add pour point depressants such as low molecular weight ethylene copolymers. being done. However, previously proposed pour point depressants often do not have the ability to substantially lower the cryogenic filter plugging point (CFPP). In JP-A-54-19406 and JP-A-54-155204,
It has been stated that the CFPP of fuel oils can be lowered when certain polar compounds are added in conjunction with pour point depressants such as those described above. However, even if the polar compounds specifically disclosed in these publications are used, there may be little reduction in CFPP depending on the type of fuel oil, and there are no effective methods for such fuel oils. The development of additives was desired. The present invention meets this need, and its gist is that 0.001 to 100% of the oil-soluble ethylene copolymer is added to 100 parts by weight of middle distillate fuel oil.
0.1 part by weight and 0.005 to 27 carbon sterols
This is a middle distillate fuel oil composition containing 0.1 part by weight. The middle distillate fuel oil used in the present invention has, for example, a boiling point range of 150 to 500°C, with typical examples having an initial boiling point of 175 to 240°C and a 90% distillation temperature of 300 to 400°C. , pour point is -10 to +5
Examples include fuel oils having properties of ℃. For example, light oil, A heavy oil, etc. can be used. The oil-soluble ethylene copolymer used in the present invention usually contains ethylene containing 65 to 95 mol%, preferably 70 to 93 mol%, and 3 carbon atoms.
It is a copolymer of the above olefin or a copolymer of ethylene and vinyl monomer, and can be dissolved in fuel oil at a rate of at least 1 g/or more at room temperature. Its number average molecular weight is usually 1000 or
50,000, preferably 1,500 to 20,000. Examples of the olefin having 3 or more carbon atoms that can be a constituent monomer of the copolymer include propylene, 1-
Examples include butene, 1-pentene, 1-hexene, 1-octene, 1-decene, 1-tetradecene, 4-methyl-1-pentene, and any two or more of these. In addition, examples of the vinyl monomer include vinyl acetate, methyl acrylate,
Examples include ethyl acrylate and methyl methacrylate. In the composition of the present invention, a sterol having 27 carbon atoms is used in addition to the above-mentioned ethylene copolymer.
More specifically, preferred examples include those having one hydroxyl group such as cholestanol, cholesterol, dehydrocholesterol, coprostanol, epicoprostanol, and thimosterol. Even when sterols having 28 to 30 carbon atoms are used in place of these sterols, no substantial effect is observed. Oil-soluble ethylene copolymer, middle distillate fuel oil 100%
It is blended in a proportion of 0.001 to 0.1 part by weight, preferably 0.01 to 0.1 part by weight. The sterol having 27 carbon atoms is preferably 0.005 to 0.1 part by weight per 100 parts by weight of middle distillate fuel oil.
It is blended in a proportion of 0.01 to 0.05 parts by weight. The composition of the present invention may optionally contain a corrosion inhibitor,
Antioxidants, stabilizers, dispersants, and other additives can be included. According to the present invention, a fuel composition with improved pour point and CFPP can be provided. Next, examples will be shown. Examples 1 to 7, Comparative Examples 1 to 12 CFPP was measured when various additives were blended with 100 parts by weight of fuel oil. The properties of the fuel oil used are shown in Table 1, and the decrease in CFPP relative to the raw fuel oil is shown as ΔCFPP in Table 2. Furthermore, CFPP is
Journal of the lnstitute Petroleum vol.52, No.
It was measured according to the method described in 510.
【表】【table】
【表】【table】
Claims (1)
レン系共重合体0.001ないし0.1重量部及び炭素数
27のステロール0.005ないし0.1重量部を配合して
なる中留分燃料油組成物。1 0.001 to 0.1 part by weight of oil-soluble ethylene copolymer and number of carbon atoms per 100 parts by weight of middle distillate fuel oil
A middle distillate fuel oil composition containing 0.005 to 0.1 part by weight of No. 27 sterol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19348082A JPS5984983A (en) | 1982-11-05 | 1982-11-05 | Fuel oil composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19348082A JPS5984983A (en) | 1982-11-05 | 1982-11-05 | Fuel oil composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5984983A JPS5984983A (en) | 1984-05-16 |
| JPH022919B2 true JPH022919B2 (en) | 1990-01-19 |
Family
ID=16308721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19348082A Granted JPS5984983A (en) | 1982-11-05 | 1982-11-05 | Fuel oil composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5984983A (en) |
-
1982
- 1982-11-05 JP JP19348082A patent/JPS5984983A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5984983A (en) | 1984-05-16 |
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