公开(公告)号：US06335475B1

公开(公告)日：2002-01-01

申请号：US09405217

申请日：1999-09-27

申请人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

发明人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

IPC分类号： G21F900

CPC分类号： G21F9/004

摘要： Processes of reductive decontamination using an agent containing at least two kinds of components, and then decomposing the agent using an apparatus for decomposing at least two kinds of chemical substances in the agent, are employed in chemical decontamination. A catalyst decomposition column in an upstream side of an ion exchange resin column and a hydrogen peroxide injection apparatus in a further upstream side, reduce the amount of waste products caused by a chemical decontaminating agent where a mixed decontaminating agent for a composition trapped in a cation resin column and for a composition trapped in an anion exchange resin are used for the chemical decontaminating agent, selectively decompose the composition trapped in the cation resin column in an inlet side of a cleaning apparatus when radioactive nuclides in the decontaminating agent are cleansed using the cation resin column during decontamination, and decompose both compositions after completion of the decontamination. The chemical decontamination thus selectively decomposes the chemical decontaminating agent, which is a component of the load to the cation resin column. The chemical decontamination moderates corrosion of material by using a chemical decontaminating agent decomposing apparatus capable of decomposing the components trapped by the cation exchange resin and components trapped by an anion exchange resin at the same time.

摘要翻译： 使用含有至少两种组分的试剂进行还原去污的方法，然后使用用于在试剂中分解至少两种化学物质的装置分解试剂，用于化学去污。 在离子交换树脂柱的上游侧的催化剂分解塔和进一步的上游侧的过氧化氢注入装置，减少由化学去污剂引起的废物的量，其中用于组合物捕获在阳离子中的混合净化剂 树脂柱和捕获在阴离子交换树脂中的组合物用于化学净化剂，当清除剂中的放射性核素用阳离子清洗时，选择性地分解在清洁装置的入口侧捕获在阳离子树脂柱中的组合物 在去污过程中树脂柱，并且在去污完成后分解两种组合物。 化学去污因此选择性地将作为负荷成分的化学净化剂分解到阳离子树脂柱中。 化学去污通过使用能够分解被阳离子交换树脂捕获的成分和同时被阴离子交换树脂捕获的成分的化学除污剂分解装置来缓和材料的腐蚀。

公开(公告)号：US06973154B2

公开(公告)日：2005-12-06

申请号：US10000338

申请日：2001-12-04

申请人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

发明人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

IPC分类号： G21F9/00

CPC分类号： G21F9/004

摘要： In a chemical decontamination method of chemically decontaminating radioactive nuclides from a metallic material, oxalic acid and hydrazine are injected as a reductive decontaminating agent into water that is in contact with the metallic material. Injection of the hydrazine is stopped after a cation resin arranged in a circulation line connected to the metallic material breaks, and at least the oxalic acid and the hydrazine in the reductive decontaminating agent are decomposed using a decomposing catalyst.

摘要翻译： 在从金属材料中化学去除放射性核素的化学去污方法中，将草酸和肼作为还原净化剂注入与金属材料接触的水中。 在与金属材料连接的循环管线中布置的阳离子树脂断裂后，停止注入肼，并且使用分解催化剂将还原性净化剂中的至少草酸和肼分解。

公开(公告)号：US06921515B2

公开(公告)日：2005-07-26

申请号：US10000083

申请日：2001-12-04

申请人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

发明人： Makoto Nagase ,  Naohito Uetake ,  Kazushige Ishida ,  Fumito Nakamura ,  Kazumi Anazawa ,  Tadashi Tamagawa ,  Hiroo Yoshikawa

IPC分类号： G21F9/28 ,  G21F9/00 ,  B32B27/04

CPC分类号： G21F9/004

摘要： In a chemical decontamination apparatus, a catalyst decomposition column in an upstream side of an ion exchange resin column and a hydrogen peroxide injection apparatus in a further upstream side, reduce the amount of waste products caused by a chemical decontaminating agent where a mixed decontaminating agent for a composition trapped in a cation resin column and for a composition trapped in an anion exchange resin are used for the chemical decontaminating agent, selectively decompose the composition trapped in the cation resin column in an inlet side of a cleaning apparatus when radioactive nuclides in the decontaminating agent are cleansed using the cation resin column during decontamination, and decompose both compositions after completion of the decontamination. The chemical decontamination thus selectively decomposes the chemical decontaminating agent, which is a component of the load to the cation resin column.

摘要翻译： 在化学去污装置中，离子交换树脂柱的上游侧的催化剂分解塔和上游侧的过氧化氢注入装置减少由化学净化剂引起的废物的量，其中混合净化剂 将用于阴离子交换树脂的组分捕获在阳离子树脂柱中，并且用于阴离子交换树脂中的组合物用于化学去污剂中，当在去污剂中放射性核素时，选择性地分解在清洁设备的入口侧捕获在阳离子树脂柱中的组合物 在去污期间使用阳离子树脂柱清洁剂，并且在去污完成后分解两种组合物。 化学去污因此选择性地将作为负荷成分的化学净化剂分解到阳离子树脂柱中。

公开(公告)号：US06549603B1

公开(公告)日：2003-04-15

申请号：US09657530

申请日：2000-09-08

申请人： Kazushige Ishida ,  Kazumi Anazawa ,  Yoshiyuki Takamori ,  Naohito Uetake ,  Makoto Nagase ,  Hiroo Yoshikawa ,  Tadashi Tamagawa

发明人： Kazushige Ishida ,  Kazumi Anazawa ,  Yoshiyuki Takamori ,  Naohito Uetake ,  Makoto Nagase ,  Hiroo Yoshikawa ,  Tadashi Tamagawa

IPC分类号： G21F900

CPC分类号： G21C17/0225 ,  G21F9/004 ,  G21Y2002/601 ,  G21Y2004/20

摘要： To suppress a decrease of thickness due to corrosion of structural members and to achieve a removal of radionuclides with good efficiency in a nuclear power plant, oxidation decontamination is first conducted. An aqueous potassium permanganate solution is supplied from a circulation line to a reactor pressure vessel, which is a stainless steel structural member, and a reactor water cleanup system piping and a drain piping, which are carbon steel structural members. These structural members are oxidation-decontaminated by the action of potassium permanganate. Then the above-mentioned structural members are reduction-decontaminated by using an aqueous oxalic acid solution. The aqueous oxalic acid solution contains hydrazine.

摘要翻译： 为了抑制由于结构构件的腐蚀而导致的厚度减小并且在核电站中实现高效率地去除放射性核素，首先进行氧化去污。 将高锰酸钾溶液从循环管线供给到作为碳素钢结构件的反应器压力容器，其为不锈钢结构构件，反应器水净化系统管道和排水管道。 这些结构构件通过高锰酸钾的作用进行氧化去污。 然后通过使用草酸水溶液还原去除上述结构构件。 草酸水溶液含有肼。