| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide, in a volume-decrease treatment making use of a ball-type dry distillation furnace, such a volume-decrease treatment apparatus for an ion-exchange resin as can improve remarkably the volume-decrease ratio; and to provide a method for volume-decrease treatment. <P>SOLUTION: This volume-decrease treatment method for an ion-exchange resin, comprises a superheated steam contact process of supplying an ion-exchange resin and a superheated steam into a metal-made closed reaction vessel and of contacting the ion-exchange resin with a superheated steam of 400°C or higher and an additional thermal treatment process of treating the ion-exchange resin, which has passed through the superheated steam contact process, under an ambient temperature of 460°C or higher, wherein the superheated steam contact process conducts the thermal decomposition of a cationic ion exchange resin having an exchange group of -SO<SB POS="POST">3</SB>in the presence of superheated steam, thus separating and removing the exchange group of -SO<SB POS="POST">3</SB>as sulfurous gas or sulfuric acid gas, and the additional thermal treatment process decomposes a substrate which has separated the exchange group of -SO<SB POS="POST">3</SB>. <P>COPYRIGHT: (C)2012,JPO&INPIT |
