Mitsubishi Jukogyo Kabushiki Kaisha

Director-general, Masao Kubota of the Agency of Industrial Science and

Director-general Seiichi Ishizaka of the Agency of Industrial Science

Hikokusu Kajimoto

Takafumi Shimada

Masahiro Tokuda

Setsumi Ochiai

Tadaaki Tamura

Toshiya Oyamoto

Tsugitoshi Ogura

Akio Hiraki

A method of liquefying coal by reaction in a slurry mixture with a solvent consisting of an organic heavy fraction, with the application of heat, is characterized in that the slurry-based reactants are mixed with light aliphatic compounds to make use of the latent and sensible heats of the latter in lowering the reactant temperature, whereby the coal-liquefying reaction and thermal polycondensation reaction of the organic heavy fraction are controlled.

Method for effecting coal-liquefying reaction

A process for classifying plastic-containing wastes which comprises dissolving a mixture of plastics containing polyolefin-type plastics in a hydrocarbon solvent (preferably of a xylene type) at a temperature of not lower than 60.degree. C. (preferably not lower than 80.degree. C.), vacuum-evaporating the solvent of the solution to cause precipitation of the polyolefin-type plastics dissolved therein, separating and recovering the major portion of the precipitate, further dividing the resulting separated solution into the concentrated liquor of the precipitate yet remaining admixed in the separated solution and the phase of a solution hardly containing the precipitate, recycling the concentrated liquor and using again for dissolving the mixture of plastics, and removing the solvent from the phase of a solution hardly containing the precipitate so as to recover the polystyrene-type plastics. A process for classifying plastic-containing wastes by separating and recovering the precipitate of the polyolefin-type plastics from the mixture solution containing the same in the above-mentioned process, which comprises connecting in series a plurality of solid-liquid separating devices, sequentially disintegrating and dispersing the precipitate separated by the separating device at a preceding stage in the separated solution flowing out from the separating device at a subsequent stage and again separating the precipitate by the separating device at a still subsequent stage.

Process for recovering polyolefin and polystyrene materials by

A self-cleaning type stirring apparatus comprising a cylindrical container, a plurality of rotary shafts rotatably extending into said cylindrical container and not having a common axis of rotation, and the same number of stirring members as the number of said rotary shafts disposed in said cylindrical container at locations radially remote from the axes of rotation of said rotary shafts respectively and being slightly spaced from or in light contact with each other, the radially outermost one of said stirring members being slightly spaced from or in light contact with the inner wall of said cylindrical container, each of said stirring members being fixedly connected with each of said rotary shafts in such a manner that it will rotate around its own axis while rotating bodily incident to the rotation of the two rotary shafts to which it is connected, and said stirring members during rotation not interfering with each other.

Self-cleaning type stirring apparatus

Growing community of inventors

Hiroshima, Japan

Hikokusu Kajimoto