매체순환연소를 위한 Ni계열 산소전달입자의 반응 특성 및 반응 모델

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 29; no. 1; pp. 90 - 96
• Main Authors: 박지혜(Ji Hye Park), 황라현(Ra Hyun Hwang), 백점인(Jeom-in Baek), 류호정(Ho-jung Ryu), 이광복(Kwang Bok Yi)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2018
• Subjects: 기계공학; 매체순환연소; JMA model; 산소전달입자; 반응속도; Oxygen carrier particle; 환원반응성; Reduction reactivity; CLC; JMA 모델; Kinetics; JMA
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2018.29.1.90

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.