METHOD AND SYSTEM FOR THE RECOVERY OF CATALYSTS AND PROCESS AND UNIT FOR THE PRODUCTION OF PERFLUOROALKYL IODIDE TELOMERS

摘要

A method by which a solid catalyst used in the production of a perfluoroalkyl iodide telomer or the like can be efficiently and continuously recovered and continuously recycled to the reaction system for reuse. The method comprises drawing a slurry containing a reaction product and a catalyst from a reaction system, classifying the catalyst contained in the slurry by the use of a hydrocyclone to thereby obtain a high-concentration slurry having a catalyst concentration higher than that of the drawn slurry and a low-concentration slurry having a catalyst concentration lower than that of the drawn slurry, and recycling the high-concentration slurry to the reaction system.