HIGH-EFFICIENCY SEPARATION METHOD AND APPARATUS FOR SOLID/LIQUID MIXTURE BY SUPERCRITICAL CARBON DIOXIDE AND/OR LIQUID CARBON DIOXIDE

摘要

PROBLEM TO BE SOLVED: To provide a high-efficiency separation method for a solid/liquid mixture by supercritical carbon dioxide and/or liquid carbon dioxide, and to provide its apparatus.

SOLUTION: Provided are the method for separating the solid/liquid mixture including the step of separating the solid/liquid mixture by utilizing difference in the specific gravity by using supercritical carbon dioxide and/or liquid carbon dioxide as a solvent for separation by difference in the specific gravity; the method for separating the solid/liquid mixture including the step of separating the solid/liquid mixture by utilizing separation by difference in the specific gravity and extraction separation by combining the step of separation by difference in the specific gravity and the step of extraction separation using supercritical carbon dioxide and/or liquid carbon dioxide as a solvent for extraction separation; the method for separating the solid/liquid mixture including steps of mixing the solid/liquid mixture with supercritical carbon dioxide and/or liquid carbon dioxide and controlling the density and viscosity of a fluid after mixing the solid/liquid mixture with supercritical carbon dioxide and/or liquid carbon dioxide; and its apparatus. This can provide new, high-efficiency separation method and apparatus for the solid/liquid mixture using supercritical carbon dioxide as the solvent for separation by the difference in the specific gravity.

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