Arastoopour, Hamid; et al. (2022): Application of Multiphase Transport to CO2 Capture

Arastoopour, Hamid; Gidaspow, Dimitri; Lyczkowski, Robert W. (2022): Application of Multiphase Transport to CO2 Capture. In Hamid Arastoopour, Dimitri Gidaspow, Robert W. Lyczkowski (Eds.): Transport Phenomena in Multiphase Systems. Cham: Springer International Publishing (Mechanical Engineering Series), pp. 177–196.

„Climate change due to emission of fossil energy has created a world-wide interest in capturing carbon dioxide. Thus cost-effective capturing of the CO₂ before it is emitted to the atmosphere and then utilizing and storing it are becoming critically important. Energy loss due to CO₂ sorption and desorption can be significantly reduced using solid sorbents in a circulating fluidized bed (CFB) system with a regeneration system that may be performed at lower pressure. To successfully scale up carbon capture CFB processes, a rigorous numerical modeling tool, such as computational fluid dynamics (CFD), is needed to fill the gap between the lab/bench scale and the large scales needed for demonstration. In this research, Illinois Institute of Technology (IIT) researchers used the CFD approach to simulate CO₂ sorption and regeneration in a CFB system using sodium carbonate, potassium carbonate, and MgO-based solid sorbents. CFD simulation of the entire CFB loop was performed. The solid circulation rate, extent of CO₂ removal, and regeneration of solid sorbents were calculated in the entire loop. This simulation with the regeneration reactor operating at reduced pressure shows a more efficient carbon capture system.“

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