Title:
放射性核種の分離方法および放射性核種の分離装置
Document Type and Number:
Japanese Patent JP6621917
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a method for the separation of radionuclides, said method allowing for radionuclides to be separated more easily while maintaining a separation rate comparable to or higher than that of conventional methods, and a separation device for executing said method. The radionuclide separation method according to the present invention is a method for separating radionuclides to be separated from highly radioactive wastewater containing radionuclides to be separated, the method including: a radioactive wastewater solidification step for vaporizing the liquid-phase component of the highly radioactive wastewater so as to produce a highly radioactive solid; a radionuclide fluoride conversion step in which fluorine gas acts upon the highly radioactive solid so as to convert the target radionuclides in the highly radioactive solid into a fluoride; and a radionuclide fluoride volatilization/separation step in which the radionuclide fluoride is volatilized and separated by being heated to a temperature such that the saturation vapor pressure of the radionuclide fluoride being separated is equal to or greater than a partial pressure calculated from the radionuclide fluoride content of the highly radioactive solid but is less than atmospheric pressure.
Inventors:
Kani Yuko
Sasadaira Country Club
Daisuke Watanabe
Sasadaira Country Club
Daisuke Watanabe
Application Number:
JP2018518818A
Publication Date:
December 18, 2019
Filing Date:
May 23, 2016
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G21F9/06; C22B7/00; C22B25/02; C22B26/10; C22B34/14; G21F9/08
Domestic Patent References:
| JP2201199A | ||||
| JP56084600A | ||||
| JP2002357694A | ||||
| JP2011179820A | ||||
| JP2013101066A |
Foreign References:
| US5774815 |
Attorney, Agent or Firm:
Polaire Patent Business Corporation