Nippon Oil Company

Nippon Petroleum Refining Company, Limited

Kozo Kamiya

Masaru Ushio

Toru Morita

Kenji Suzuki

Masao Nambu

Yuichiro Fujiyama

Junichi Kubo

Eiji Akiyama

Hajime Okazaki

Haruki Nagano

Masaoki Ouchi

Manabu Kazato

A process for removing iron impurities, inter alia iron or iron compounds, from petroleum oil distillation residues is disclosed in which a high gradient magnetic separator incorporates a pack of ferromagnetic fillers in the form of a generally flat or curved sheet-like strip. The ferromagnetic filler is a Fe--Cr alloy of a selected composition and the strip is of selected geometric characteristics such that the rate of removal of iron impurities can be maintained substantially at a maximum throughout the separation mode of operation prior to and after washing of the ferromagnetic filler.

Process for removing iron impurities from petroleum oil distillation

Supply system of petroleum heavy oil containing magnetic fine particles

A process is disclosed for refining distillation residual fractions of a crude petroleum oil. The process employs a high gradient magnetic separator for magnetically depositing iron impurities from such distillation residual oil onto a ferromagnetic filler in the separator. The ferromagnetic filler is cleaned at predetermined intervals by a selected class of washing liquids so that the refining operation can be carried out continually.

Process for hydrogenatively treating petroleum distillation residual oils

A process for preparing a fluid for traction drive from a fraction containing compounds having at least four aromatic rings is disclosed. The fraction is a by-product produced at the time of the preparation of alpha-methyl-benzylalkylbenzenes by alkylation of at least one compound selected from C.sub.7 -C.sub.10 alkylbenzenes with styrene in the presence of an acid catalyst. The process comprises the steps of decomposing the fraction in an atmosphere of hydrogen at a predetermined temperature and pressure, collecting a decomposition product having a boiling range not higher than 450.degree. C. and then subjecting the decomposition product to nuclear hydrogenation at aromatic rings thereof in the presence of a catalyst capable of nuclear hydrogenation.

Process for preparing a fluid for traction drive

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Kamakura, Japan

Kozo Kamiya