Title:
METHOD FOR DISSOLVING USED ION EXCHANGE RESIN, AND ELUTION APPARATUS
Document Type and Number:
Japanese Patent JP2019030836
Kind Code:
A
Abstract:
To adsorb metal ions, and efficiently eliminate the metal ions and clad from used ion exchange resin in which clad is mixed containing iron oxide as a main component.SOLUTION: A method for dissolving used ion exchange resin comprises: an agitation process in which metal ions are adsorbed, an elution tank 1 is filled with powdered or granular used ion exchange resin in which clad is mixed containing iron oxide as a main component, and an acid eluent, the used ion exchange resin and the acid eluent are heated inside the elution tank 1 and agitated by boiling the acid eluent, the metal ions are eluted from the used ion exchange resin, and clad is solved; and an eluent feeding process in which the acid eluent subsequently is fed upflow or downflow to the elution tank 1.SELECTED DRAWING: Figure 1
Inventors:
MIYAMOTO SHINGO
IWASAKI MAMORU
KOMORI HIDEYUKI
AIZAWA MOTOHIRO
OTA NOBUYUKI
IWASA JUNJI
ISHIDA KAZUNARI
IWASAKI MAMORU
KOMORI HIDEYUKI
AIZAWA MOTOHIRO
OTA NOBUYUKI
IWASA JUNJI
ISHIDA KAZUNARI
Application Number:
JP2017152593A
Publication Date:
February 28, 2019
Filing Date:
August 07, 2017
Export Citation:
Assignee:
KURITA WATER IND LTD
HITACHI GE NUCLEAR ENERGY LTD
HITACHI GE NUCLEAR ENERGY LTD
International Classes:
B09B3/00; B01J49/00; B01J49/12; B01J49/40; B01J49/53; G21F9/30
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno