Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

Jet A-1 Coking Tests under Conditions Simulating Gas Turbine Combustor

가스터빈 연소기 모사 조건에서의 Jet A-1 코킹시험

  • Lee, Dain (School of Mechanical Engineering, Chungbuk National University) ;
  • Lee, Kangyeong (School of Mechanical Engineering, Chungbuk National University) ;
  • Han, Sunwoo (School of Mechanical Engineering, Chungbuk National University) ;
  • Ahn, Kyubok (School of Mechanical Engineering, Chungbuk National University) ;
  • Ryu, Gyong Won (4th Technical Office 2nd Department 1 Team, Agency for Defense Development)
  • Received : 2021.10.08
  • Accepted : 2022.01.22
  • Published : 2022.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

In a gas turbine, fuel is exposed to a high temperature environment until it is fed to the combustor through the injector. Hydrocarbon fuels can coke under high temperature conditions, which can cause coking material to deposit on fuel lines or block the injector passages. In this study, a specimen simulating a fuel line located inside a gas turbine and Jet A-1 were heated using electric devices. Jet A-1 coking tests were performed by changing the wall temperature of the stainless steel specimen and the temperature of Jet A-1 supplied to the specimen. After the coked specimens were cut, the coking material and the inner surface were analyzed using an energy dispersive X-ray spectrometer and a field emission scanning electron microscope.

가스터빈에서 연료는 분사기를 통해 연소기에 공급될 때까지 고온 환경에 노출된다. 탄화수소 연료는 고온 조건에서 코킹이 발생하여 코킹 물질이 연료관에 퇴적되거나 분사기 통로를 막을 수 있다. 본 연구에서는 가스터빈 내부에 위치한 연료관을 모사한 시편과 Jet A-1을 전기적인 장치들을 이용해 가열하였다. 스테인리스강 시편의 벽면 온도와 시편에 공급되는 Jet A-1의 온도를 변화시키며, Jet A-1 코킹시험을 수행하였다. 코킹이 발생한 시편들을 절단한 후 코킹 물질과 내부 표면을 에너지 분산 X-선 분석기와 전계방사형주사전자현미경을 통해 분석하였다.

Keywords

Acknowledgement

본 연구는 방위사업청, 국방과학연구소의 선도형 핵심기술 연구개발 과제 중 '완제 터보팬 엔진 통합 개발 기술' 및 한국연구재단(NRF-2019M1A3A1A02076962)의 지원을 받아서 수행되었으며, 이에 감사드립니다.

References

  1. Lee, J. and Ahn, K., "Review on Kerosene Fuel and Coking," Journal of the Korean Society of Propulsion Engineers, Vol. 24, No. 3, pp. 81-124, 2020. https://doi.org/10.6108/KSPE.2020.24.3.081
  2. Lee, J., Lee, B. and Ahn, K., "Experimental Study on Heat Transfer Characteristics of Jet A-1 Fuel," Journal of the Korean Society of Propulsion Engineers, Vol. 24, No. 5, pp. 1-12, 2020.
  3. Liu, J.Z., "Chemical Kinetic and Thermal Numerical Simulation of Coking Process of Jet Fuels in Thin Nozzle Sections within Autoxidation Temperature Regime," Master of Science, Institute of Aerospace Studies, University of Toronto, Toronto, O.N., Canada, 2014.
  4. Gul, O., Rudnick, R.L. and Schobert, H.H., "The Effect of Chemical Composition of Coal-Based Jet Fuels on the Deposit Tendency and Morphology," Energy & Fuels, Vol. 20, No. 6, pp. 2478-2485, 2006. https://doi.org/10.1021/ef0503921
  5. Vassiloyanakopoulos, V.P., "Design and Method for the Evaluation of the Coking Resistance of Swirl Plates of the E-2C Aircraft Fuel Nozzles," Master of Science, Department of Mecahnical Engineering, Naval Postgraduate School, Monterey, C.A., U.S.A., 1996.
  6. Kim, J., Park, S.H., Chun, B., Kim, S.H., Jeong, B.H. and Han, J.S., "A Technical Review of Endothermic Fuel Use on High Speed Flight Cooling," Journal of the Korean Society of Propulsion Engineers, Vol. 14, No. 2, pp. 71-79, 2010.
  7. Song, C., Eser, S., Schobert, H.H. and Patrick G.H., "Pyrolytic Degradation Studies of a Coal-derived and a Petroleum-derived Aviation Jet Fuel," Energy & Fuels, Vol. 7, No. 2, pp. 234-243, 1992. https://doi.org/10.1021/ef00038a013
  8. Wong, O., "Design and Development of an Apparatus to Study Aviation Jet Fuel Thermal Stability," Master of Science, Institute of Aerospace Studies, University of Toronto, Toronto, O.N., Canada, 2010.
  9. Commodo, M., Wong, O., Fabris, I., Groth, P.T.C. and Gulder, L.O., "Spectroscopic Study of Aviation Jet Fuel Thermal Oxidative Stability," Energy & Fuels, Vol. 24, No. 12, pp. 6437-6441, 2010. https://doi.org/10.1021/ef1012837
  10. Zabarnick, S., West, J.Z., Shafer, M.L., Mueller, S.S., Striebich, C.R. and Wzesinski J.P., "Studies of the Role of Heteroatomic Species in Jet Fuel Thermal Stability: Model Fuel Mixtures and Real Fuels," Energy & Fuels, Vol. 33, No. 9, pp. 8557-8565, 2019. https://doi.org/10.1021/acs.energyfuels.9b02345
  11. Xie, W., Fang, W., Li, D., Xing, Y., Guo, Y. and Lin, R., "Coking of Model Hydrocarbon Fuels under Supercritical Condition," Energy & Fuels, Vol. 23, No. 6, pp. 2997-3001, 2009. https://doi.org/10.1021/ef8011323
  12. Yuen, T.C.F., Liang, J.J., Young, G.N., Oskooei, S., Sreekanth, S. and Gulder, L.O., "Novel Experimental Approach to Studying the Thermal Stability and Coking Propensity of Jet Fuel," Energy & Fuels, Vol. 31, No. 4, pp. 3585-3591, 2017. https://doi.org/10.1021/acs.energyfuels.6b03091
  13. Jiang, R., Liu, G., He, X., Yang, C., Wang, L., Zhang, X. and Mi, Z., "Supercritical Thermal Decompositions of Normal-and Iso-dodecane in Tubular Reactor," Journal of Analytical and Applied Pyrolysis, Vol. 92, No. 2, pp. 292-306, 2011. https://doi.org/10.1016/j.jaap.2011.07.001
  14. Liu, J.Z., "Chemical Kinetic and Thermal Numerical Simulation of Coking Process of Jet Fuels in Thin Nozzle Sections within Autoxidation Temperature Regime," Master of Science, Department of University of Toronto Institute of Aerospace Studies, University of Toronto, Toronto, Canada, 2014.
  15. Widegren, A.J. and Bruno, J.T., "Thermal Decomposition Kinetics of the Aviation Turbine Fuel Jet A," Industrial & Engineering Chemistry Research, Vol. 47, No. 13, pp. 4342-4348, 2008. https://doi.org/10.1021/ie8000666
  16. Liang, J.J., "Design and Development of an Experimental Apparatus to Study Jet Fuel Coking in Small Gas Turbine Fuel Nozzles," Master of Science, Institute of Aerospace Studies, University of Toronto, Toronto, Canada, 2013.
  17. Gascoin, N., Gillard, P., Bernard, S. and Bouchez, M., "Characterisation of Coking Activity During Supercritical Hydrocarbon Pyrolysis," Fuel Processing Technology, Vol. 89, No. 12, pp. 1416-1428, 2008. https://doi.org/10.1016/j.fuproc.2008.07.004
  18. Kim, J., Park, S.H., Chun, B., Kim, S.H., Jeong, B.H. and Han, J.S., "Cooling Technologies by Using of Hydrocarbon Type Fuels," 2010 KSAS Spring Conference, Peongchang, Korea, pp. 336-339, Apr. 2010.
  19. Joh, M., Kim, S. and Choi, H.S., "A Review on the Factors Affecting High Temperature Thermal Stability of the Kerosene-Type Fuels," 50th KSPE Spring Conference, Jeju, Korea, pp. 420-421, May 2018.
  20. Tidjani, N., Martin, G.H., Ropital, F., Grienche, G. and Verdier, H., "Carbon Deposits in Gas Turbine Injectors," ASME Turbo Expo 2001: Power for Land, Sea, and Air, New Orleans, L.O., U.S.A., pp. 1-7, Jun. 2001.