The nonflammable adsorbent AgX shows excellent adsorption characteristics of methyl iodide under harsh gas conditions like venting gas released from a nuclear power plant. Furthermore, it also exhibited good adsorption performances even in the temperature range of room temperature to 40 degrees below zero Celsius....
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Methyl iodine adsorption characteristics and applications of AgX in the outside air temperature range

AgX and AgR as radioactive iodine adsorbents were developed. They can be applied to a nuclear emergency. Their good adsorption characteristics have been proved under harsh gas conditions of vent gas. In particular, AgR can work well even in an atmosphere of hydrogen and oxygen coexistence in PWR. Since AgX shows excellent adsorption performance in the minus temperature range, it can be applied to an air clean system. ...
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Adsorption characteristics and applications of radioiodine adsorbent AgX and AgR

AgX as a radioactive iodine adsorbent has been developed. It can be used in nuclear power plant when a emergency occurs. The experimental results show that the adsorbent has excellent adsorption propertie s even in the harsh gas atmosphere and severe conditions such as high temperature, high humidity and h h pressure. In this report, the adsorption properties for methyl iodide will be especially described....
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Future of AgX As a Radioactive Iodine Adsorbent

1.フィルターベントの課題 フィルターベントは、福島の様な事故時に大きな役割 を持つ重要な設備として位置づけられておりま主に ドライ方式とウエット方式があり、両者とも被爆防止の 点で非常に有効な方法であります。しかしながら、これらの方法でも除去が十分でなかっ た放射性物質として有機ヨウ素があります。ドライ方式 では、ヨウ素吸着剤として銀ゼオライトを用いることで 軽減を図って参りました。ウエット方式では、一部(CCI 社)の方式を除けば、有機ヨウ素の対策が十分とはなっ ていないのが実情です。有機ヨウ素の発生......
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Applications of AgX as an Adsorbent for Radioactive Iodine

A gas-liquid mixing nozzle and a multi-layer metal fiber filter are used, and a silver zeolite filter is installed for the purpose of removing organic iodine. Based on this technology, we have developed a demonstration machine for a large-capacity air purification system that purifies a large amount of contaminated air. A gas- liquid mixing nozzle driven by air blown from a blower sucks and accelerates water to form a high-speed two-phase flow. With this acceleration and centrifugal force field of water, al...
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Advanced Radioactive Material Removal System by Silver Zeolite (1) Avoid outages due to lawsuit and promoting local public acceptance

When a severe accident (SA) occurs at a nuclear power plant, a large amount of hydrogen will be generated in the containment vessel. As a measure, a static catalytic hydrogen recombination device (PAR) can be used to remove the hydrogen. In the case of significant damage to reactor core, the metal reaction between water and zirconium in the core will generate oxygen. The PAR device can promote the recombination reaction of hydrogen and oxygen using platinum or palladium as a catalyst to convert into water s...
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Advanced Radioactive Material Removal System by Silver Zeolite (2) The hydrogen catalyst reaction and application of silver zeolites

"Advancement radioactive material removal system by silver zeolite" was adopted in the 2020 fiscal year as a project "nuclear-power-industry base strengthening enterprise" of the Ministry of Economy, Trade and Industry. We propose developed FCVS, air purification system, and rare gas adsorption system to in and outside the country....
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Advanced Radioactive Material Removal System by Silver Zeolite (3) Development of mobile air purification system

Since it is difficult to remove radioactive noble gas, the development of high performance adsorbent has been desired from the viewpoint of exposure prevention. We were able to develop a new adsorbent, XeA that has more than 10 times the performance of existing products. By utilizing this adsorbent in nuclear facilities, it is possible to contribute to the miniaturization of equipment, non-combustibility and reduction of radiation exposure....
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Advanced Radioactive Material Removal System by Silver Zeolite (4) Noble gas adsorption system