Supercritical continuous processing method and apparatus for liquid material and supercritical continuous processing system combined with refrigeration cycle

摘要

PROBLEM TO BE SOLVED: To provide a method for the continuous supercritical treatment of a liquid substance, which is safe, applicable also to treatments for extracting natural substances and treatments of foods, and capable of performing a continuous treatment, to provide an apparatus therefor, and to provide a continuous supercritical treatment system combined with a refrigeration cycle. SOLUTION: The continuous supercritical treatment apparatus consists of a screw compressor 11 using a CO2 gas as the working fluid, a raw solution tank 12 that pours a liquid substance into the suction process or compression process of the compressor, a liquid/gas separator 13 that separates a high- pressure supercritical gas/liquid mixture fluid delivered from the compressor 11 into a high-pressure CO2 gas and a high-pressure CO2 liquid in which the liquid substance has been dissolved, and a decompression separator 14 that releases from a critical state the critical high-pressure CO2 liquid in which the liquid substance has been dissolved to separate it into a low-pressure CO2 gas and the extract.