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A Study on Optimization of Alumina and Catalysts Coating on Tube Reactor for Endothermic Reaction of n-Dodecane Under Supercritical Conditions

고온, 고압 조건에서 n-dodecane 액체연료의 흡열분해를 위한 관벽 내 알루미나 및 촉매 코팅 최적화 연구

  • Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Lee, Sang Moon (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Lee, Ye Hwan (Department of Environmental Energy Engineering, Graduate school of Kyonggi University) ;
  • Lee, Dong Yoon (Department of Environmental Energy Engineering, Graduate school of Kyonggi University) ;
  • Gwak, Ji-Yeong (Department of Environmental Energy Engineering, Kyonggi University)
  • Received : 2020.12.04
  • Accepted : 2021.06.05
  • Published : 2021.06.30

Abstract

In this study, Al2O3 and H-ZSM-5 were coated on the inner wall of the stainless steel tube for the stable use of liquid hydrocarbon fuel and an endothermic catalyst used as coolant for hypersonic flying vehicles. Coke production is inevitable by the endothermic decomposition reaction of the liquid hydrocarbon fuel, and Fe, Ni metals induce the production of the filamentous coke by using a stainless steel tube reactor as a cooling channel. By coating the stainless steel with H-ZSM-5, Fe and Ni metals are prevented from being directly exposed to the liquid hydrocarbon fuel, and the formation of the filamentous coke is inhibited. In addition, Al2O3 is coated between the stainless steel and H-ZSM-5 to enhance adhesion bond strength.

본 연구에서는 극초음속 비행체의 냉각제로 사용되는 액체탄화수소 연료와 흡열 촉매의 안정적 사용을 위해 Al2O3와 H-ZSM-5를 stainless steel tube 내벽에 코팅하는 연구를 수행하였다. 액체탄화수소 연료의 흡열분해 반응에서 coke 생성이 불가피하며, stainless steel tube reactor를 냉각채널로 사용하게 됨에 따라 Fe, Ni 금속이 filamentous coke 생성을 유발한다. 이에 따라 stainless steel에 H-ZSM-5를 코팅함으로써, Fe과 Ni 금속이 액체탄화수소 연료에 직접 노출되는 것을 방지하고 filamentous coke 생성을 억제하고자 하였다. 또한 stainless steel과 H-ZSM-5 사이에는 Al2O3을 코팅하여, 부착 강도를 증진 시키고자 하였다.

Keywords

References

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