JP2012002606A - 放射性ヨウ素の吸着材及び放射性ヨウ素の除去装置 - Google Patents
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Abstract
【解決手段】本実施形態に係る放射性ヨウ素の吸着材を適用した放射性ヨウ素除去装置10は、放射性ヨウ素を含有する排気11Aが送給されるダクト12のチャンバ13内に設けられ、排気11A中に含まれる放射性ヨウ素を吸着する放射性ヨウ素吸着材14を含むヨウ素フィルタ15を有する。放射性ヨウ素吸着材14は、母体を構成する担体と、この担体に添着される添着物質とを含み、添着物質は少なくともTEDAを含み、TEDAの添着量を3.0質量%を超え10.0質量%未満とする。
【選択図】図1
Description
本発明による実施形態に係る放射性ヨウ素の吸着材(以下、放射性ヨウ素吸着材という。)を適用した放射性ヨウ素の除去装置(以下、放射性ヨウ素除去装置という。)について、図面を参照して説明する。図1は、本発明の実施形態に係る放射性ヨウ素除去装置の構成を示す概略図である。図1に示すように、本実施形態に係る放射性ヨウ素吸着材を適用した放射性ヨウ素除去装置10は、放射性ヨウ素を含有する排気(被処理ガス)11Aが送給されるダクト12のチャンバ(容器)13内に設けられ、排気11A中に含まれる放射性ヨウ素を吸着する放射性ヨウ素吸着材14を含むヨウ素フィルタ15を有するものである。
放射性ヨウ素吸着材14は、母体を構成する担体と、この担体に添着される添着物質とを含む。担体に用いられる材料としては、特に限定されるものではなく、表面に複数の細孔を有するものであればよく、例えば、活性炭、アルミナ、ゼオライト、シリカゲル、活性白土などが挙げられる。ゼオライトとしては、天然ゼオライト又は合成ゼオライトのどちらでもよい。ゼオライトとして、モルデナイト系ゼオライトなどが挙げられる。担体は、それぞれ単独で又は2種以上を組み合わせて使用することができる。
TEDAを添着させた担体の細孔を模式的に示した状態を図3から図5に示す。図3は、TEDAの添着量が、3.0質量%の時のヨウ素吸着材の細孔の一部を模式的に示す図であり、図4は、TEDAの添着量が、5.0質量%の時のヨウ素吸着材の細孔の一部を模式的に示す図であり、図5は、TEDAの添着量が、10.0質量%の時のヨウ素吸着材の細孔の一部を模式的に示す図である。
TEDAが疎水化を示す効果について示す。図6は、TEDA添着量と水分吸着率との関係を示す図である。尚、この試験は、温度30℃、相対湿度95%の空気中において、担体にTEDAを10.0質量%まで添着して行った。図6に示すように、TEDAの添着量を増大させていくに従って水分の吸着率が低下する。よって、ヨウ素吸着材はTEDAの添着量が増大することに従って疎水化されていくことが確認された。
TEDAの添着量が有機ヨウ素化合物の透過率に与える効果について示す。図7は、TEDA添着量と有機ヨウ素化合物の透過率の関係を示す図である。なお、この試験は、担体にTEDAを10.0質量%まで添着して行い、有機ヨウ素化合物の透過率は、排ガス中の有機ヨウ素化合物の含有量を1.0とした時の有機ヨウ素化合物の透過率を示す。また、ここでは、有機ヨウ素化合物としては、主にCH3Iである。図7に示すように、TEDAの添着量が0.1質量%程度の時の有機ヨウ素化合物の透過率は、3.0×10-2程度である。このときの有機ヨウ素化合物の除去率は、97%程度となる。また、TEDAの添着量が3.0質量%程度の時の有機ヨウ素化合物の透過率は、3.0×10-3程度である。このときの有機ヨウ素化合物の除去率は、99.7%程度となる。また、TEDAの添着量が7.0質量%程度の時の有機ヨウ素化合物の透過率は、1.5×10-3程度である。このときの有機ヨウ素化合物の除去率は、99.9%程度となる。
11A、11B 排気(被処理ガス)
12 ダクト
13 チャンバ(容器)
14 放射性ヨウ素吸着材
15、40 ヨウ素フィルタ
21 ケーシング
22 ガス導入孔
23 ガス導入部
25 フィルタ本体
26 孔
27 後板
28 取っ手
31 TEDA
32 担体
33 細孔
34 水分
35 放射性ヨウ素
41−1、41−2 多孔板
42 連結部材
Claims (6)
- 放射性ヨウ素を含有する被処理ガスに含まれる放射性ヨウ素を吸着するヨウ素吸着材であり、
母体を構成する担体と、該担体に添着される添着物質とを含み、
前記添着物質が、少なくともトリエチレンジアミンを含み、該トリエチレンジアミンの添着量が、3.0質量%を超え10.0質量%未満であることを特徴とする放射性ヨウ素の吸着材。 - 請求項1において、
前記添着物質が、更に、ヨウ化カリウム、ヨウ素、銀の少なくとも1つを含む放射性ヨウ素の吸着材。 - 請求項1又は2において、
前記担体が、活性炭、アルミナ、ゼオライト、シリカゲル、活性白土の少なくとも1つから構成される放射性ヨウ素の吸着材。 - 請求項1乃至3の何れか1つにおいて、
前記担体の形状が、粒子状、繊維状、マット状である放射性ヨウ素の吸着材。 - 請求項1乃至4の何れか1つにおいて、
前記被処理ガスが、原子力施設の換気空調系から排出される排気である放射性ヨウ素の吸着材。 - 放射性ヨウ素を含有する被処理ガスが送給されるダクト又はチャンバ内に設けられ、前記被処理ガスに含まれる放射性ヨウ素を吸着する請求項1乃至5の何れか1つに記載のヨウ素吸着材を含むことを特徴とする放射性ヨウ素の除去装置。
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JP2010136615A JP5781279B2 (ja) | 2010-06-15 | 2010-06-15 | 放射性ヨウ素の吸着材及び放射性ヨウ素の除去装置 |
EP11795472.7A EP2584565A4 (en) | 2010-06-15 | 2011-04-25 | ADSORPTION AGENT FOR RADIOACTIVE IOD AND DEVICE FOR REMOVING RADIOACTIVE IOD |
US13/700,617 US9044737B2 (en) | 2010-06-15 | 2011-04-25 | Radioactive iodine adsorbent and radioactive iodine removal apparatus |
PCT/JP2011/060081 WO2011158564A1 (ja) | 2010-06-15 | 2011-04-25 | 放射性ヨウ素の吸着材及び放射性ヨウ素の除去装置 |
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Cited By (9)
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JP2014035286A (ja) * | 2012-08-09 | 2014-02-24 | Mitsubishi Heavy Ind Ltd | 放射性ガス除去装置 |
JP2014115289A (ja) * | 2012-12-11 | 2014-06-26 | Ge-Hitachi Nuclear Energy Americas Llc | 軽水型炉(lwr)の重大事故封じ込め用の放射性捕獲システムおよびその方法 |
JP2015045588A (ja) * | 2013-08-28 | 2015-03-12 | 三菱重工業株式会社 | 放射性ヨウ素除去装置 |
US9144771B2 (en) | 2012-06-05 | 2015-09-29 | Korea Atomic Energy Research Institute | Iodine absorbent material containing salt and radioactive iodine removal system using the same |
JP2017164737A (ja) * | 2016-03-09 | 2017-09-21 | 東ソー株式会社 | 水酸基を含有する環状アミン化合物が固定化された担持物 |
JP2017215260A (ja) * | 2016-06-01 | 2017-12-07 | 三菱重工業株式会社 | 放射性ヨウ素の吸着材及び放射性ヨウ素の除去装置 |
JP2017227633A (ja) * | 2016-06-21 | 2017-12-28 | フタムラ化学株式会社 | 放射性ヨウ素吸着材及びその製造方法 |
WO2018101286A1 (ja) * | 2016-12-01 | 2018-06-07 | 日本化学工業株式会社 | 非晶質の水酸化鉄(iii)を含有する吸着剤及びその製造方法 |
JP2020082015A (ja) * | 2018-11-29 | 2020-06-04 | 株式会社コベルコ科研 | 吸着塔およびガス中の揮発性有機化合物の除去装置 |
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FR2994863B1 (fr) * | 2012-09-05 | 2015-07-03 | Commissariat Energie Atomique | Utilisation d'un materiau specifique pour l'extraction de l'iode moleculaire |
SE1351270A1 (sv) * | 2013-10-25 | 2015-04-26 | Westinghouse Electric Sweden | Filterarrangemang |
ES2886579T3 (es) * | 2015-03-12 | 2021-12-20 | Rasa Ind Ltd | Material de filtración para ventilación filtrada, uso del mismo y dispositivo de ventilación filtrada que lo contiene |
FR3083715B1 (fr) * | 2018-07-13 | 2022-09-09 | Onet Tech Cn | Materiau adsorbant charge en sel d'iodure utile pour pieger de l'iode radioactif de composes iodes a l'etat gazeux par substitution isotopique d'iode |
RU2717818C1 (ru) * | 2019-06-28 | 2020-03-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | Композиционный материал для сорбционной очистки воздуха от летучих форм радиоактивного иода |
CN113842891A (zh) * | 2021-10-15 | 2021-12-28 | 四川轻化工大学 | 浸渍活性炭及其制备方法 |
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US9144771B2 (en) | 2012-06-05 | 2015-09-29 | Korea Atomic Energy Research Institute | Iodine absorbent material containing salt and radioactive iodine removal system using the same |
JP2014035286A (ja) * | 2012-08-09 | 2014-02-24 | Mitsubishi Heavy Ind Ltd | 放射性ガス除去装置 |
JP2014115289A (ja) * | 2012-12-11 | 2014-06-26 | Ge-Hitachi Nuclear Energy Americas Llc | 軽水型炉(lwr)の重大事故封じ込め用の放射性捕獲システムおよびその方法 |
US9406407B2 (en) | 2012-12-11 | 2016-08-02 | Ge-Hitachi Nuclear Energy Americas Llc | Radioactive capture system for severe accident containment of light water reactors (LWRS), and method thereof |
JP2015045588A (ja) * | 2013-08-28 | 2015-03-12 | 三菱重工業株式会社 | 放射性ヨウ素除去装置 |
JP2017164737A (ja) * | 2016-03-09 | 2017-09-21 | 東ソー株式会社 | 水酸基を含有する環状アミン化合物が固定化された担持物 |
JP2017215260A (ja) * | 2016-06-01 | 2017-12-07 | 三菱重工業株式会社 | 放射性ヨウ素の吸着材及び放射性ヨウ素の除去装置 |
JP2017227633A (ja) * | 2016-06-21 | 2017-12-28 | フタムラ化学株式会社 | 放射性ヨウ素吸着材及びその製造方法 |
JP7111447B2 (ja) | 2016-06-21 | 2022-08-02 | フタムラ化学株式会社 | 放射性ヨウ素吸着材の製造方法 |
WO2018101286A1 (ja) * | 2016-12-01 | 2018-06-07 | 日本化学工業株式会社 | 非晶質の水酸化鉄(iii)を含有する吸着剤及びその製造方法 |
JP2020082015A (ja) * | 2018-11-29 | 2020-06-04 | 株式会社コベルコ科研 | 吸着塔およびガス中の揮発性有機化合物の除去装置 |
JP7166152B2 (ja) | 2018-11-29 | 2022-11-07 | 株式会社コベルコ科研 | 吸着塔およびガス中の揮発性有機化合物の除去装置 |
Also Published As
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JP5781279B2 (ja) | 2015-09-16 |
US9044737B2 (en) | 2015-06-02 |
EP2584565A4 (en) | 2015-04-22 |
WO2011158564A1 (ja) | 2011-12-22 |
EP2584565A1 (en) | 2013-04-24 |
US20130068102A1 (en) | 2013-03-21 |
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