• 제목/요약/키워드: Chemical Reaction

검색결과 9,366건 처리시간 0.037초

매체순환연소를 위한 Ni계열 산소전달입자의 반응 특성 및 반응 모델 (Reaction Characteristics and Kinetics of Ni-bsed Oxygen Carrier for Chemical Looping Combustion)

  • 박지혜;황라현;백점인;류호정;이광복
    • 한국수소및신에너지학회논문집
    • /
    • 제29권1호
    • /
    • pp.90-96
    • /
    • 2018

  • 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.

  • https://doi.org/10.7316/KHNES.2018.29.1.90 인용 PDF KSCI