EXTRACTION SEPARATION METHOD

摘要

PROBLEM TO BE SOLVED: To shorten processing time required for extracting and separating a specific component from a raw material fluid, while downsizing an extraction apparatus.SOLUTION: An extraction separation method includes an extraction separation process for extracting and separating a specific component from a raw material fluid by using an extraction apparatus 3. The extraction separation process includes: an extraction step for extracting a specific component from the raw material fluid to an extractant, while circulating the raw material fluid and the extractant in a state that they are brought into contact with each other in extraction flow channels 33 of first to fifth extraction sections 4 to 8 of the extraction apparatus 3; an introduction step for introducing a first fluid of fluid discharged from the first to fourth extraction sections 4 to 7 to the extraction flow channels 33 of the extraction sections 5 to 8 at the next stage in a state that the raw material fluid and the extractant are mixed; and a final separation step for separating fluid discharged from the extraction flow channel 33 of the fifth extraction section 8 into a raw material fluid after extraction of the specific component and an extractant having extracted the specific component.