Energy Conversion and Management, Vol.180, 924-930, 2019
Prediction of sorption-enhanced reforming process on hydrotalcite sorbent in a fluidized bed reactor
Hydrotalcite sorbent exhibits a potential capacity of carbon dioxide sorption, which is employed to investigate the ethanol sorption-enhanced reforming process in this work. The Dense Discrete Phase Model (DDPM) is implemented to carry out a three-dimensional simulation of a fluidized bed reactor. The sorption-enhanced effect on reforming performance is discussed. The results reveal that the hydrotalcite-based sorption can greatly improve the hydrogen production and provide the required heat for the reforming process. The influence of particle size distribution is examined. It is found that the bed expansion height is increased considering the particle size distribution. In addition, the impacts of operating pressure and catalyst to sorbent ratio are evaluated. The results show that the increase of pressure and catalyst to sorbent ratio will hinder the hydrogen production.