Oil squeezing device, oil squeezing method and oil squeezing method using co-rotating twin-screw extruder

摘要

PROBLEM TO BE SOLVED: To provide a high quality and highly recoverable oil squeezing device and an oil squeezing method. SOLUTION: A supply unit having a pair of barrels, a biaxial shaft rotatable in the same direction, and a pair of screw elements to supply an oil-containing solid material into the barrel, and an oil extraction unit for squeezing oil. An oil recovery section for recovering oil and a heating section for heating to a temperature lower than the melting point of the solid material or the lower allowable heating temperature of the oil are provided. The pair of screw elements is a transport screw element in the transport section and a squeeze screw element in the squeeze section, and the flow path is cut between the outer surface of the squeeze screw element and the inner surface of the barrel. The area is set smaller than the flow path cross-sectional area between the outer surface of the transport screw element and the inner surface of the barrel, and the oil recovery section has an oil outflow opening that can recover only the squeezed oil that collects in the lower part of the barrel. An oil squeezing device characterized by having. [Selection diagram] Fig. 1