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Continuous operation test at engineering scale uranium crystallizer

工学規模晶析システムにおける連続運転試験

鷲谷 忠博; 田山 敏光; 中村 和仁*; 矢野 公彦; 柴田 淳広; 野村 和則; 近沢 孝弘*; 長田 正信*; 菊池 俊明*

Washiya, Tadahiro; Tayama, Toshimitsu; Nakamura, Kazuhito*; Yano, Kimihiko; Shibata, Atsuhiro; Nomura, Kazunori; Chikazawa, Takahiro*; Nagata, Masanobu*; Kikuchi, Toshiaki*

本件は、先進湿式再処理技術の革新技術である晶析技術における晶析装置開発に関するものである。本報では工学規模晶析試験装置を用いたウラン系での連続運転試験結果として、本晶析装置の定常及び非定常時における装置安定性,過渡的な応答性等に関する工学的な知見を中心に報告するものである。なお、本件は2009年7月ベルギーで開催されたICONE-17特集号への論文投稿である。

Japan Atomic Energy Agency (JAEA) and Mitsubishi Materials Corporation (MMC) are developing the crystallization process for elemental technology of FBR fuel reprocessing. The uranium (U) crystallization process is a key technology for New Extraction System for TRU Recovery (NEXT) process that was evaluated as the most promising process for future FBR reprocessing. We had developed an innovative crystallizer and fabricated an engineering-scale crystallizer and have carried out continuous operation test to investigate the stability of the equipment at steady and non-steady state conditions by using depleted uranium. As for simulating typical failure events in the crystallizer, crystal accumulation and crystal blockage were occurred intentionally, and monitoring method and resume procedure were tried and selected in this work.

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