Pressure Drop, Capacity and Mass Transfer Area Requirements for Post-Combustion Carbon Capture by Solvents

A Lassauce (1) , P Alix (1) , L Raynal (1) , A Royon-Lebeaud (1) , Y Haroun (1)

1 IFPEN - IFP Energies nouvelles

Post-combustion capture processes using amines are considered as one of the preferred options for CO 2 Capture and Storage (CCS). However, the cost of avoided CO 2 is very large and must be reduced. The latter cost is strongly linked with column designs which con-sequently must be optimized. In the present article, hydrodynamics and mass transfer performances of random and structured packings are discussed in terms of pressure drop, capacity and most impor-tantly in terms of mass transfer parameters, in particular in terms of interfacial area which is the most important parameter for CO 2 absorbers design. Comparison of different commercial high effi-ciency packings is discussed from experimental characterization and from CFD simulations and a methodology for future developments is proposed.

Keywords: Pressure drop; CO2 capture; Post-combustion; Solvents; Amines; CFD simulation; Absorbers design

Domains: Chemical engineering; Mechanics of materials [physics.class-ph]; Chemical Physics [physics.chem-ph]

A Lassauce, P Alix, L Raynal, A Royon-Lebeaud, Y Haroun. Pressure Drop, Capacity and Mass Transfer Area Requirements for Post-Combustion Carbon Capture by Solvents. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2014, 6, 69, pp.1021 - 1034. ⟨10.2516/ogst/2013154⟩. ⟨hal-01085885⟩