Evaluation of sorption-enhanced reforming of biodiesel by-product in fluidized beds by means of CFD approach. (15th February 2018)

• Record Type: Journal Article
• Authors: Wang, Shuai; Yang, Xuesong; Xu, Shaodong; Zhang, Kai; Li, Bowen
• Is Part Of: Fuel. Volume 214(2018)
• Page Start: 115
• Page End: 122
• Publication Date: 2018-02-15
• Subjects: Computational fluid dynamics -- Reforming -- Glycerol -- CO2absorption -- Sorbent; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2017.10.128
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Sorption-enhanced glycerol steam reforming process in fluidized beds is studied. A bubble-based EMMS drag model is incorporated into multi-fluid model. Fluctuating behaviors of bidisperse particles are evaluated. Glycerol reforming process with and without CO2 absorption is compared. Abstract: The sorption-enhanced glycerol steam reforming (SE-GSR) provides a promising high-efficient means for hydrogen production. Fluidized bed reactors have their own potential on the heat transfer and sorbent regeneration. To gain a deep insight into the SE-GSR process in fluidized bed reactors, a computational fluid dynamics (CFD) approach is employed in this study. The multi-fluid model is implemented with chemical kinetics of glycerol steam reforming and CO2 absorption. The bubble effect on gas-solid drag force is considered via a bubble-based EMMS drag model. A three-dimensional simulation is carried out to investigate the flow characteristics and interaction mechanic of binary mixture with catalyst and sorbent particles. The predictions with and without sorption reactions are compared. The effects of operating velocity and sorbent size on the performance are also discussed. The results reveal that reducing operating velocity and sorbent diameter can improve the hydrogen yield and fuel conversion.