Title:
RADIOACTIVE SUBSTANCE REMOVAL FILTER, RADIOACTIVE SUBSTANCE REMOVAL FILTER UNIT IN WHICH SAID RADIOACTIVE SUBSTANCE REMOVAL FILTER IS USED, AND METHOD FOR REMOVING RADIOACTIVE SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2018/110547
Kind Code:
A1
Abstract:
Provided are: a radioactive substance removal filter capable of suppressing the deterioration of radioactive substance removal capability even if an organic solvent, in particular a compound having a high boiling point of 120 degrees or higher, is present in the air; a radioactive substance removal filter unit in which the radioactive substance removal filter is used; and a method for removing radioactive substances. The radioactive substance removal filter is provided with an activated carbon fiber layer 2 on the downstream side and an activated carbon particle layer 3 on the upstream side. The activated carbon fiber layer 2 includes a fiber-like activated carbon to which an amine compound is attached, and the ratio of the amount of the amine compound attached in the activated carbon particles layer 3 and the amount of the amine compound attached in the activated carbon fiber layer 2 (amount of the amine compound attached in the activated carbon particles layer 3 / amount of the amine compound attached in the activated carbon fiber layer 2) is 0.1 or less (including 0).
Inventors:
MASUMORI TADAO (JP)
WAKAIDA YASUO (JP)
NOGAWA NORIO (JP)
WAKAIDA YASUO (JP)
NOGAWA NORIO (JP)
Application Number:
PCT/JP2017/044560
Publication Date:
June 21, 2018
Filing Date:
December 12, 2017
Export Citation:
Assignee:
TOYO BOSEKI (JP)
WAKAIDA ENG INC (JP)
UNIV TOKYO (JP)
WAKAIDA ENG INC (JP)
UNIV TOKYO (JP)
International Classes:
G21F9/02; B01J20/20; B01J20/22; B01J20/28
Foreign References:
| JP2008116280A | 2008-05-22 | |||
| JP2015203578A | 2015-11-16 | |||
| JP2004205490A | 2004-07-22 | |||
| JP2012247337A | 2012-12-13 |
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (JP)
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