Organic iodine remover

Patent metadata

Field	Value
Publication number	US-2022139586-A1
Application number	US-202017433271-A
Country	US
Kind code	A1
Filing date	Jan 21, 2020
Priority date	Feb 25, 2019
Publication date	May 5, 2022
Grant date	—

Abstract

As an organic iodine remover that removes organic iodine in a containment vessel of a nuclear reactor, an organic agent (for example, an ionic liquid, an interfacial active agent, a quaternary salt, or a phase transfer catalyst) having a function of dissolving and decomposing the organic iodine and retaining iodine is used. The organic iodine remover is a substance composed of a cation and an anion. The organic iodine remover is, in particular, an organic iodine remover in which, in a structure of the cation of the organic agent, carbon or oxygen is bonded to, via a single bond, to a phosphorus element, a sulfur element or a nitrogen element, the number of carbon chains is 2 or more, and an anionic structure is configured with a substance with high nucleophilicity. By using such an organic agent, the organic iodine is removed with an efficiency of 99% or more.

First claim

1 . An organic iodine remover that removes organic iodine in a containment vessel of a nuclear reactor, wherein
the organic iodine remover is a substance composed of a cation and an anion, and the organic iodine remover is a substance in which
in a structure of the cation, carbon or oxygen is bonded, via a single bond, to a phosphorus element, a sulfur element or a nitrogen element, and
a structure of the anion has an anion charge present in a carbon element, a sulfur element, a nitrogen element, an oxygen element or a halogen element.

2 . The organic iodine remover according to claim 1 , wherein
the organic iodine remover has a dissociated structure in which the anion and the cation are not chemically bonded to each other, and the anion and the cation are substances composed of two or more molecules.

3 . The organic iodine remover according to claim 1 , which is a substance in which the cation and the anion are chemically bonded to each other and are not dissociated, and which is composed of one molecule.

4 . The organic iodine remover according to claim 1 , which is a substance in which the cation is a composed of a quaternary ammonium salt, a quaternary sulfonium salt, or a tertiary sulfonium salt.

5 . The organic iodine remover according to claim 4 , which is a substance in which a carbon chain of the cation is composed of a single bond, a double bond, or a triple bond.

6 . The organic iodine remover according to claim 4 , which is a substance in which a part of a carbon chain of the cation is composed of an oxygen bond.

7 . The organic iodine remover according to claim 4 , which is a substance in which a carbon chain of the cation is composed of two or more carbon atoms.

8 . The organic iodine remover according to claim 4 , which is a substance in which a part or all of a hydrogen element bonded to a carbon chain of the cation is substituted with a fluorine element.

9 . The organic iodine remover according to claim 1 , which is a substance in which the anion is composed of H 3 C − , H 2 RC − , HR 2 C − , R 3 C − , NC − , and RCC − , which has a charge present in the carbon element.

10 . The organic iodine remover according to claim 1 , which is a substance in which the anion is composed of RS − , which has a charge present in the sulfur element.

11 . The organic iodine remover according to claim 1 , which is a substance in which the anion is composed of N 3 − , H 2 N − , HRN − , and R 2 N − , which has a charge present in the nitrogen element.

12 . The organic iodine remover according to claim 1 , which is a substance in which the anion is composed of HO − , NO 2 − , NO 3 − , RO − , RCO 2 − , RPO 3 − , RSO 3 − , RPO 4 − , R 2 PO 2 − , R 3 CO − , FO 3 − , ClO 3 − , BrO 3 − , IO 3 − , FO 4 − , ClO 4 − , BrO 4 − , and IO 4 − , which has a charge present in the oxygen element.

13 . The organic iodine remover according to claim 1 , which is a substance in which the anion is composed of F − , Cl − , Br − , I − , F 3 − , Cl 3 − , Br 3 − , and I 3 − , which has a charge present in the halogen element.

14 . The organic iodine remover according to claim 9 , which is a substance in which a part of the carbon chain R of the anion is composed of an oxygen bond.

15 . The organic iodine remover according to claim 9 , which is a substance in which a part or all of a hydrogen element bonded to the carbon chain of the anion is substituted with a fluorine element.

Assignees

• Hitachi Ge Nuclear Energy Ltd

Inventors

• Fukui Sohei
• Tanaka Motoi
• Tanaka Masaaki
• Totsuka Fumio
• Hashimoto Tomoharu
• Tominaga Kazuo

Classifications

• G21F9/02 Primary

  Treating gases · CPC title

• G21C19/303

  specially adapted for gases (decontamination of gases G21F9/02) · CPC title

• G21C13/022

  Ventilating arrangements · CPC title

• G21C9/004

  Pressure suppression · CPC title

• Y02E30/30

  Nuclear fission reactors · CPC title