Multi-phase CFD modeling of solid sorbent carbon capture system

TitleMulti-phase CFD modeling of solid sorbent carbon capture system
Publication TypeJournal Article
Year of Publication2013
AuthorsRyan EM, DeCroix DS, Breault R, Xu W, E. Huckaby D, Saha K, Dartevelle S, Sun X
JournalPowder Technology
Type of ArticleJournal Article dcm
Keywordscarbon capture, Computational fluid dynamics, Fluidized bed, Multi-phase, Reactive transport

Computational fluid dynamics (CFD) simulations are used to investigate a low temperature post-combustion carbon capture reactor. The CFD models are based on a small scale solid sorbent carbon capture reactor design from ADA-ES and Southern Company. The reactor is a fluidized bed design based on a silica-supported amine sorbent. CFD models using both Eulerian–Eulerian and Eulerian–Lagrangian multi-phase modeling methods are developed to investigate the hydrodynamics and adsorption of carbon dioxide in the reactor. Models developed in both FLUENT® and BARRACUDA are presented to explore the strengths and weaknesses of state of the art CFD codes for modeling multi-phase carbon capture reactors. The results of the simulations show that the FLUENT® Eulerian–Lagrangian simulations (DDPM) are unstable for the given reactor design; while the BARRACUDA Eulerian–Lagrangian model is able to simulate the system given appropriate simplifying assumptions. FLUENT® Eulerian–Eulerian simulations also provide a stable solution for the carbon capture reactor given the appropriate simplifying assumptions.