Modeling and simulation of microwave double absorption on methanol steam reforming for hydrogen production

Wei Hsin Chen, Tsung Chieh Cheng, Chen I. Hung

研究成果: Article

24 引文 斯高帕斯(Scopus)

摘要

Methanol steam reforming (MSR) accompanied by methanol decomposition (MD) in an environment with microwave heating is modeled and simulated numerically in the present study. In the developed method, the governing equations simultaneously consider the continuity, momentum, energy, species and Maxwell's equations. Meanwhile, the double absorption of microwaves by both the reactants and the catalyst bed in the reactor is also taken into account. The heating processes of microwaves on the reactants and the catalyst bed are described by establishing two sets of complex relative permittivity in the non-porous and porous region. The permittivity consists of a dielectric constant and a dielectric loss factor. The obtained results indicate that the developed model can predict MSR and MD accurately. With microwave irradiation, it is found that varying dielectric loss factor in the non-porous region has a significant impact on hydrogen production, revealing that the preheating of the reactants plays a prominent role in determining the performance of MSR. Regarding microwave power, it is observed that increasing power intensifies H2 yield, especially at 500 W where methanol is depleted completely. However, an increase in power also makes MD tend to grow in that the CO2 selectivity decreases.

原文English
頁(從 - 到)333-344
頁數12
期刊International Journal of Hydrogen Energy
36
發行號1
DOIs
出版狀態Published - 2011 一月 1

All Science Journal Classification (ASJC) codes

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

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