Importance

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Abstract

A conversion-to-oil apparatus is not provided with rotary members in a heating unit and in a decomposing unit in the process of changing plastic into oil, a residue tank and catalyst, wherein plastic gel is fed into a first buffer tank 2 including a cylinder disposed vertically, a second buffer tank 3 including a cylinder disposed vertically and finally a vaporizing vessel 4 including a cylinder 4a disposed laterally, a liquid surface L·S in the vaporizing vessel 4 being adjusted at a diagonal center position in the vertical direction of the cylinder by controlling both the feeding amount of plastic gel and the temperature of the liquid surface so as to be a temperature of 400° C. to 410° C., so that the rotary members, the residue tank and the catalyst become unnecessary to make the structure of the apparatus compact.

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First Claim