期刊
FUEL PROCESSING TECHNOLOGY
卷 89, 期 12, 页码 1416-1428出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2008.07.004
关键词
Coke; Hydrocarbon pyrolysis; Supercritical state; Catalytic effect; Dodecane
资金
- Conseil General du Cher (18)
- Conseil Regional du Centre
- FRED
- FEDER
- FSE (European Union Special Funding)
- MBDA-France
The active cooling of the Supersonic Combustion Ramjet engine, for hypersonic flight purpose, is ensured thanks to fuel, n-dodecane for the present study. The endothermic fuel pyrolysis, starting above 800 K, could generate an unwanted coke formation. Experimental tests up to 1125 K and between 1 MPa and 6 MPa have been performed on the hydrocarbon fuel pyrolysis to evaluate the coking activity. 316L stainless steel, low carbon steel and titanium reactors have been considered. A witness of the coke formation, based on its thermal insulation and pressure loss effects, has been found. A correlation between methane production and coke deposit was found. The coke has been studied with Scanning Electron Microscope (SEM), Energy Dispersion Spectroscopy (EDS), X-ray diffractometer and Fourier Transform Infrared (FTIR) spectroscopy. The porosity, the density and the permeability of the coke have been estimated. (C) 2008 Elsevier B.V. All rights reserved.
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