Combined pre-reformer/reformer system utilizing monolith catalysts for hydrogen production

Jung Il Yang, Jae Hong Ryu, Kwan Young Lee, Nam Jo Jung, Ji Chan Park, Dong Hyun Chun, Hak Joo Kim, Jung Hoon Yang, Ho Tae Lee, Inho Cho, Heon Jung

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The pre-reforming of higher hydrocarbon, propane, was performed to generate hydrogen from LPG without carbon deposition on the catalysts. A Ru/Ni/MgAl 2O4 metallic monolith catalyst was employed to minimize the pressure drop over the catalyst bed. The propane pre-reforming reaction conditions for the complete conversion of propane with no carbon formation were identified to be the following: space velocities over 2400 h-1 and temperatures between 400 and 450 °C with a H2O/C1 ratio of 3. The combined pre-reformer and the main reformer system with the Ru/Ni/MgAl2O4 metallic monolith catalyst was employed to test the conversion propane to syngas where the reaction heat was provided by catalytic combustors. Propane was converted in the pre-reformer to 52.5% H 2, 27.0% CH4, 17.5% CO, and 3.0% CO2 with a 331 °C inlet temperature and a 482 °C catalyst outlet temperature. The main steam reforming reactor converted the methane from the pre-reformer with a conversion of higher than 99.0% with a 366 °C inlet temperature and an 824 °C catalyst outlet temperature. With a total of 912 cc of the Ru/Ni/MgAl2O4 metallic monolith catalyst in the main reformer, the H2 production from the propane reached an average of 3.25 Nm3h-1 when the propane was fed at 0.4 Nm 3h-1.

Original languageEnglish
Pages (from-to)8850-8856
Number of pages7
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number15
DOIs
Publication statusPublished - 2011 Jul

Keywords

  • Catalytic combustor
  • Hydrogen production
  • Metallic monolith catalyst
  • Pilot scale
  • Pre-reformer
  • Reformer

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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