Abstract
Hydrogen production through fuel reforming can be used to improve IC (internal combustion) engines combustion characteristics and to lower vehicle emissions. In this study, a computational fluid dynamics (CFD) model based on a detailed kinetic mechanism was developed for exhaust gas reforming of biogas to synthetic gas (H2 and CO). In agreement with experimental data, the reactor’s physical and chemical performance was investigated at various O2/CH4 ratios and gas hourly space velocities (GHSV). The numerical results imply that methane reforming reactions are strongly sensitive to O2/CH4 ratio and engine exhaust gas temperature. It was also found that increasing GHSV results in lower hydrogen yield; since dry and steam reforming reactions are relatively slow and are both dependent on the flow residence time. Furthermore, the hot spot effect, which is associated to oxidation reforming reactions, was investigated for catalyst activity and durability.
| Original language | English |
|---|---|
| Journal | International Journal of Hydrogen Energy |
| Volume | 39 |
| Issue number | 24 |
| Early online date | 4 Jul 2014 |
| DOIs | |
| Publication status | Published - 13 Aug 2014 |
Keywords
- Biogas upgrade; Fuel reforming; Hydrogen; CFD; Reaction kinetics
Access to Document
- Hamedi_et_al_Biogas_Upgrading_On-Board_Hydrogen_Production_International_Journal_Hydrogen_Energy_2014
NOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Hydrogen Energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hydrogen Energy, Vol 39, Issue 24, DOI: 10.1016/j.ijhydene.2014.06.017 Eligibility for repository checked May 2015