Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Reaction Characteristics and Kinetics of Ni-bsed Oxygen Carrier for Chemical Looping Combustion

매체순환연소를 위한 Ni계열 산소전달입자의 반응 특성 및 반응 모델

  • PARK, JI HYE (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • HWANG, RA HYUN (Graduate School of Energy Science and Technology, Chungnam National University) ;
  • BAEK, JEOM-IN (Korea Electric Power Corporation (KEPCO) Research Institute) ;
  • RYU, HO-JUNG (Korea Institute of Energy Research) ;
  • YI, KWANG BOK (Department of Chemical Engineering Education, Chungnam National University)
  • 박지혜 (충남대학교 에너지과학기술대학원) ;
  • 황라현 (충남대학교 에너지과학기술대학원) ;
  • 백점인 (한국전력공사전력연구원) ;
  • 류호정 (한국에너지기술연구원) ;
  • 이광복 (충남대학교 화학공학교육과)
  • Received : 2017.12.05
  • Accepted : 2018.02.28
  • Published : 2018.02.28
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Abstract

Reaction characteristics and kinetics of a oxygen carrier (OCN717-R1SU) for chemical looping combustion (CLC) have been investigated using TGA by changing gas concentration (10-30 vol.% $CH_4$) and reaction temperature ($825-900^{\circ}C$). Reaction rate of OCN717-R1SU increased as temperature increased and it was found that reaction is delayed at the initial reaction regime. Johnson-Mehl-Avrami (JMA) model was adopted to explain the reaction phenomenon. The activation energy (E) determined by JMA model in reduction reaction of OCN717-R1SU is $151.7{\pm}2.03kJ/mol$ and pre-exponential factor and JMA exponent were also obtained. The parameters calculated in this study will be applied in design of the reactor and operation conditions for CLC process.

Keywords

References

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