Nippon Oil Company

Kao Corporation

Japanese National Railways

Tadakazu Yamashita

Shigeyuki Hayashi

Kazuo Isobe

Junichi Kubo

Takao Taniguchi

Masanori Iizuka

Shinichi Satake

Sayuri Tamaki

Yasuo Katoh

Hideo Kakegawa

Hiroshi Kato

Makoto Sasaki

Masaru Sato

Kiyoshi Kato

Masao Isobe

A heavy oil emulsion fuel composition which contains heavy oils, such as bitumen and asphalt, wherein the heavy oil emulsion fuel composition can be used as a substitute fuel for heavy fuel oils, and has an enhanced combustion efficiency to thereby reduce the content of soot, dust and nitrogen oxides after combustion, which comprises (a) 40 to 85% by weight of a heavy oil, (b) 10 to 40% by weight of water, (c) 0.1 to 5% by weight of a surfactant and (d) at least 0.1% by weight of at least one component selected from the group consisting of water-soluble compounds having in its molecule two or more hydroxyl groups, monohydric alcohols having 6 or more carbon atoms, and mixtures thereof.

Heavy oil emulsion fuel composition

An oil-in-water type heavy oil emulsion fuel having a specific and broad particle size distribution which has a viscosity close to that of water, can be sufficiently atomized at a temperature of room temperature to 90.degree. C., is excellent in the handleability and fluidity, despite a very high heavy oil concentration, and has a very excellent stability such that neither precipitation nor increase in the viscosity occurs even after storage for a long period of time is prepared according to the present invention. Oil-in-water type heavy oil emulsion fuel according to the present invention can be used as a substitute fuel for heavy fuel oil without modification of the boilers. Further, the combustion efficiency of the heavy oil emulsion fuel according to the present invention is high and it is possible to reduce the amount of nitrogen oxides and sulfur oxides after combustion.

Heavy oil emulsion fuel and process for production thereof

A process is provided for converting a heavy hydrocarbon oil into light hydrocarbon fuels by thermal cracking or hydrocracking, which comprises adding to about 100 parts by weight of the heavy hydrocarbon oil feedstock (A) about 0.1 to 50 parts by weight of a substance (B) which is a hydrogenated oil obtained by aromatic ring hydrogenation of about 430.degree.-600.degree. C. thermal-treated or cracked petroleum feedstock product oil boiling higher than about 200.degree. C. to hydrogenate abot 20 to 90% of the aromatic rings present.

Process for converting heavy hydrocarbon oil into light hydrocarbon fuel

A method for hydrocracking a heavy fraction oil which comprises cracking a heavy fraction oil in the coexistence of a catalyst and a hydrogen donating solvent such as tetralin while adding a hydrogen-containing gas to the cracking reactor thereby inhibiting the formation of carbonaceous substances and precursors thereof and then hydrogenating the reaction products in the presence of a solid catalyst while adding a hydrogen-containing gas to the hydrogenating reactor thereby to convert the toluene-insoluble carbonaceous substances and precursors thereof to toluene-soluble ones, thus causing no clogging in an apparatus used.

Method for hydrocracking heavy fraction oils

In a railroad track bed an injected layer is formed between the railroad ties and the roadbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.

Injection materials for railroad track beds

In a railroad track bed, an injection layer is formed between the railroad ties and the raodbed so as to protect the latter. The injected layer is composed of an injection material injected through openings formed in the tie. The injection material has a viscosity below 30 poise at a temperature not higher than 200.degree. C. before hardening, and when hardened it has a compressive stress at 10% strain of 0.4 to 30 kg/cm.sup.2 at a compressive strain rate at 40.degree. C. of 1.5% per minute.

Railroad track bed using injection materials and method therefor

An asphalt composition comprising an epoxy resin, a maleinated asphaltic material and, if desired, a curing agent for the epoxy resin.

Growing community of inventors

Kanagawa, Japan

Tadakazu Yamashita