| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an apparatus capable of stably removing moisture from a large amount of an organic solvent, which achieves continuous refining of the organic solvent, and basically does not need the replacement of a dehydrating material. <P>SOLUTION: The dehydrating apparatus has a dehydration step facility to pass an organic solvent to be treated containing moisture through a dehydrating material filled in a dehydrating tank to thereby make moisture adsorbed by the dehydrating material, and a drying step facility to dry the moisture adsorbed on the dehydrating material, wherein the steps are alternately carried out; the dehydrating material contains a cation-exchange resin having a spherical shape; and the dehydrating material has a particle ratio of the cation-exchange resin of ≤0.4 mm in particle diameter of ≥90%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
