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脱硝転換設備概念の成立性調査(2)

Feasibility investigation of a denitration/conversion equipment concept (2)

谷本 亮二*; 吉村 忠宏*; 星野 康史*; 宗片 英樹*; 田巻 喜久*

Tanimoto, Ryoji*; Yoshimura, Tadahiro*; Hoshino, Yasushi*; Munekata, Hideki*; Tamaki, Yoshihisa*

本検討では、2002度に実施したセラミックス製脱硝容器の製作並びに硝酸ウラニル溶液を用いたマイクロ波脱硝、焙焼および還元試験に引き続き、小型のターンテーブル式脱硝転換装置を製作し、脱硝転換試験を行い、粉末物性や装置の健全性を評価することによりターンテーブル式脱硝転換装置の技術的成立性についての確認を行い、下記の成果を得た。(1)} 小型のターンテーブル式脱硝転換装置を製作し、マイクロ波脱硝、焙焼・還元、粉砕を行い、各装置の健全性について問題のないことを確認した。(2)} 粉砕後の粉末について粉末物性を測定し、従前のマイクロ波脱硝後の粉砕粉末とほぼ同等の粉末が得られることを確認した。(3)} 還元後の粉砕粉末をペレットに成型、焼結し、密度の高いペレットが得られることを確認した。(4)} 試験結果について、ターンテーブル式脱硝転換設備成立性の観点から検討を行い、開発課題を整理した。

In this investigation, ceramics denitration containers with ball valve units were manufactured and preliminary tests of microwave denitration, calcination and reduction were carried out in last fiscal year. In this fiscal year, a small scale denitration /conversion apparatus with turntable system was designed and manufactured, then a series of microwave denitration/conversion tests was conducted. Feasibility of the denitration/conversion apparatus with turntable system was evaluated by checking powder properties and soundness of apparatus through the series of tests. The summary of the results are as follows;(1).By the series of microwave denitration, calcination, and reduction tests using small scale denitration/conversion apparatus with turntable system manufactured, it is confirmed that there are no critical problem in the apparatus.(2).Checking the powder properties after grinding, it is confirmed that the powder is equivalent of one obtained by conventional microwave denitration /conversion facility.(3).Reduced powder was grinded and pressed to several pellets, then sintered. It was confirmed that high density pellet fuel can be obtained.(4).Studying the test results from the viewpoint of feasibility of denitration/conversion facility with turntable system, the R&D issues were made clear.

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