Equipment and method for recycling extracting agent from extraction raffinate

The invention belongs to the field of extracting agent recycling and relates to equipment and a method for recycling an extracting agent from extraction raffinate. The method comprises the steps thatstanding, clarifying and separating are carried out after the pH value of the extraction raffinate is regulated to 1.5-5, the extracting agent obtained in the clarified extraction raffinate is subjected to two or more levels of capture recycling through a capture agent, after each level of capture recycling is completed, the capture agent containing the extracting agent is circularly taken as thecapture agent of the corresponding level, the obtained extraction raffinate enters the next level of capture recycling, the extraction raffinate obtained after the final level of capture recycling iscompleted is subjected to standing, clarifying and separating, an obtained oil phase returns to the final level of capture recycling, and an obtained water phase is discharged out; and when the concentration of the extracting a