Mitsubishi Oil Co., Ltd.

Hiroyuki Ihara

Junsuke Yabumoto

Hisashi Yano

Yoshitomo Sanami

Michiro Matsubara

Fumio Kumata

Kazuo Takahashi

Ryuzi Kuwavara

Osamu Hiroya

Masanori Nishiya

An oil filter comprising a housing opened at one end, a first separator unit in the housing for removing solid contaminants from the oil and a second separator unit for removing gaseous contaminants. The first separator unit includes a cylindrical filter element and upper and lower end plates attached to the upper and lower ends of the filter element. The second separator unit is disposed in the space defined by the inner periphery of the filter element and between the upper and lower end plates. It includes a chamber arranged to generate a vortical flow of the oil introduced thereof to thereby separate gas-rich oil which gathers in an axially central portion of the chamber, a first outlet for discharging the gas-rich oil and a second outlet for the oil containing little gaseous contaminants, the first and second outlets extending into the housing from the open end thereof.

Oil filter I

An integrated and compact separator for removing both solid and gaseous contaminants from engine oil. Oil to be cleaned is introduced tangentially into a vortex flow chamber. Oil stripped of gaseous contaminant passes through pores in the outer wall of the vortex flow chamber into a filter system, while gas-rich oil collected near the center of the chamber passes into a gas removal pipe extending in the chamber at its axial center. After solid contaminant is removed by the filter system, the oil is returned to the engine parts to be lubricated.

Integrated separator for solid and gas contaminants in engine oil

An integrated and compact separator for removing both solid and gaseous contaminants from fluid. Fluid to be cleaned is introduced tangentially into a vortex flow chamber before or after filtration of the fluid. The fluid stripped of gaseous contaminants passes through pores in the outer wall of the vortex flow chamber while gas-rich fluid collected near the center of the chamber passes into a gas removal pipe extending in the chamber at its axial center. After solid and gaseous contaminants are removed by the separator, the fluid flows out of the separator.

Integrated separator for solid and gaseous contaminants in a fluid

A continuous process for the production of a solvent for use in the liquefaction of coal is described. The process comprises hydrogenating a mixture of 100 parts by weight of a hydrocarbon mixture and from 0.2 to 10 parts by weight of phenol and/or alkylphenol. The hydrocarbon mixture contains at least 50% by weight of a polycyclic (from tricyclic to pentacyclic) aromatic hydrocarbon or its alkyl derivative. The hydrocarbon mixture is distilled away in a proportion of at least 80% when heated at a temperature of from 320.degree. to 550.degree. C. The hydrogenation of the hydrocarbon mixture and phenol and/or alkylphenol may be carried out with or without the addition of from 0.05 to 0.5% by weight (calculated as sulfur) of an easily desulfurizable sulfur compound in a high temperature and pressure hydrogen atmosphere in the presence of a catalyst containing the sulfide(s) of Group VIII metal and/or Group VI metal of the Periodic Table to prepare a partially hydrogenated product resulting from the partial hydrogenation of the aromatic ring of the polycyclic aromatic hydrocarbon or its alkyl derivative.

Continuous process for the production of solvents for coal liquefaction

A coal-oil mixture comprising pulverized coal dispersed in hydrocarbon oil containing olefinic hydrocarbons having at least 8 carbon atoms in an amount of at least 5% by volume, based on the total volumes of the hydrocarbon oil and the olefin.

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Kanagawa, Japan

Hiroyuki Ihara