Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Endothermic Properties of Liquid Fuel Decomposition Catalyst Using Metal Foam Support

메탈폼 지지체를 이용한 액체연료 분해반응 촉매의 흡열특성

  • Mun, Jeongin (Department of Chemical Engineering, Kyonggi Universtiy) ;
  • Kim, Nari (Department of Chemical Engineering, Kyonggi Universtiy) ;
  • Jeong, Byunghun (Agency for Defense Development, 4th headquarters) ;
  • Jung, Jihoon (Department of Chemical Engineering, Kyonggi Universtiy)
  • 문정인 (경기대학교 화학공학과) ;
  • 김나리 (경기대학교 화학공학과) ;
  • 정병훈 (국방과학연구소 4본부) ;
  • 정지훈 (경기대학교 화학공학과)
  • Received : 2021.04.16
  • Accepted : 2021.06.15
  • Published : 2021.11.01
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Abstract

In a hypersonic vehicle to solve the heat problem generated during flight, a cooling technology is being developed which uses the endothermic effect that appears during the decomposition reaction of the mounted fuel. In this study, the decomposition reaction of n-dodecane fuel was performed using HZSM-5 as a catalyst, and the catalyst was coated on metal foam to maximize the endothermic effect of the catalytic decomposition reaction and suppress coke formation. The reactor was a stainless steel flow reactor with a outer diameter of 1.27 cm, and the reaction temperature was 550 ℃, the reaction pressure was 4 MPa, and the flow rate was 12 ml per minute. As a result of the catalytic decomposition reaction using a catalyst coated with HZSM-5 on the metal foam, the heat sink was 2887 kJ/kg as a maximum, the gas phase conversion rate was 34%, and the amount of coke produced on the metal foam decreased by about 56% as the catalyst was coated compared to the uncoated catalyst.

극초음속 비행체의 비행 중에 발생되는 열 문제를 해결하기 위해 탑재된 연료의 분해반응 시 나타나는 흡열효과를 이용하는 냉각기술이 개발되고 있다. 본 연구에서는 HZSM-5를 촉매로 사용하여 n-dodecane 연료의 분해반응을 수행하였으며, 촉매 분해반응의 흡열효과를 극대화하고 코크생성을 억제하기 위해 촉매를 메탈폼에 코팅하였다. 반응기는 외경 1.27 cm의 스테인리스 스틸 흐름형 반응기를 사용하였다. HZSM-5를 메탈폼에 코팅한 촉매를 사용한 촉매 분해반응 결과 흡열량은 최대 2887 kJ/kg, 기상전환율은 34% 이었으며, 메탈폼의 코크생성량은 촉매를 코팅함에 따라 촉매를 코팅하지 않은 것에 비해 약 56% 감소하였다.

Keywords

Acknowledgement

본 연구는 2021년 국방과학연구소의 기술개발사업 및 2021년 경기대학교 대학원 연구원장학생 장학금 지원에 의하여 수행되었음.

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