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Hydrogen Production From Various Heavy Hydrocarbons by Steam Reforming

[+] Author Affiliations
Yasuyoshi Takeda, Masaki Kusumi, Masaaki Kamizono, Katsuya Hirata

Doshisha University, Kyoto, Japan

Toshio Shinoki

Mitsubishi Electric Corporation, Amagasaki, Japan

Hirochika Tanigawa

NIT, Maizuru College, Maizuru, Japan

Paper No. FUELCELL2017-3455, pp. V001T01A003; 10 pages
  • ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2017 Power Conference Joint With ICOPE-17, the ASME 2017 11th International Conference on Energy Sustainability, and the ASME 2017 Nuclear Forum
  • ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4056-6
  • Copyright © 2017 by ASME


The authors develop a small and simple steam-reforming reactor in a home-use size for such various heavy-hydrocarbons fuels as n-octane, n-decane, n-tetradecane and n-hexadecane in addition to n-dodecane, and measure the inside-temperature profile and the molar fractions of main gas components such as H2, CH4, CO and CO2. As a result, the authors successfully achieve suitable inside-temperature profiles. Namely, temperature almost-linearly increases in the downstream direction along a reactor, under such two conditions as 600–950 K at the upstream end of the catalyst-layer bed in the reactor and as less-than 1,070 K everywhere in the reactor. And, the authors reveal the effects of the liquid-hourly space velocity (LHSV) upon the molar fractions, a conversion ratio and reforming efficiencies for various heavy-hydrocarbons fuels. All the molar fractions, which agree well with thermochemical-equilibrium theory, are approximately independent of LHSV. The conversion ratio is about 90 % for LHSV ≤ 0.6 h−1, and monotonically decreases with increasing LHSV for LHSV > 0.6 h−1. Then, each reforming efficiency always attains the maximum for LHSV ≈ 0.6 h−1 being independent of fuels. This suggests the common upper limit of LHSV for practically-suitable operation.

Copyright © 2017 by ASME



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