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The Effects of Cross-Section Openings on the Chlorination Reaction Rate of ZIRLO Cladding Hulls

단면 개방이 ZIRLO 피복관의 염소화 반응 속도에 미치는 영향

Jeon, Min Ku;Choi, Yong Taek;Lee, Chang Hwa;Kang, Deok Yoon;Hur, Jin-Mok;Ahn, Do-Hee
전민구;최용택;이창화;강덕윤;허진목;안도희

  • Received : 2015.06.09
  • Accepted : 2015.08.10
  • Published : 2015.09.30

Abstract

The reaction rates of ZIRLO cladding hulls with cross-section openings were investigated using a thermo-gravimetric analysis system in order to identify whether selective recovery of Zr from oxidized cladding hulls is possible. The experimental results showed that an oxidized ZIRLO cladding hull was not reactive with chlorine gas at 400℃. However, providing fresh cross-sections on one or both ends of the ZIRLO hulls enabled a chlorination reaction. This reaction was completed after 8 hours; a 14% increase on the 7 hours seen with a bare ZIRLO cladding hull. The Sharp-Hancock plot analysis results revealed that the contracting volume model is the best for describing the reaction between the cross-section opened ZIRLO hulls and chlorine gas under the condition of this work. It was concluded that the chlorination process can be employed for oxidized ZIRLO cladding hulls by providing cross-section openings.

Keywords

ZIRLO;Chlorination;Reaction rate model;Thermo-gravimetric analysis;Cladding hull waste

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Acknowledgement

Grant : 파이로 전해환원공정 기술개발