The crystal component recovery method and system for recovering crystal components

文件类型：PDF文档
文件大小：56K
A method of recovering a crystal component, in which without circulatory use of a filtrate or washing filtrate as a washing liquid and without circulatory use thereof in re-slurrying of crystal component, a reaction solvent can be efficiently removed from the crystal component; and a relevant crystal component recovering system. There is provided a method of recovering a crystal component, comprising the steps of feeding a crystal-component-containing slurry produced by reactor (50) into first rotary filter (23) where the crystal component is recovered as a cake layer on a filter cloth surface thereof, washing the cake with 95% acetic acid to thereby remove mainly impurities from the crystal component and feeding the obtained crystal component into re-slurrying tank (24); feeding pure water alone into the re-slurrying tank (24) to thereby obtain a re-slurry from the cake; and feeding the re-slurry into second rotary filter (30) where the crystal component is recovered as a cake layer on a filter cloth surface thereof and washing the cake layer with pure water to thereby remove acetic acid.