Parametric Study on the CO2 Capture Efficiency of The Carbonate Looping Process in a 10 kW Dual Fluidized Bed

The calcium looping cycle for CO2 capture from power generation, cement manufacture and hydrogen production

“…A parametric study has been performed on the apparatus with the riser used as the calciner and BFB as the carbonator and a CO 2 capture efficiency of > 90 % was reported. The CO 2 capture efficiency was found to decrease with decreasing CaO looping ratio (CaO looping rate between beds / CO 2 flow to carbonator) and space time (number of moles of CaO in carbonator / CO 2 flow to carbonator) (Charitos et al, 2009). …”

Calcium looping for CO 2 capture in combustion systems

“…More than 600 h of operation were accumulated, including experiments with simultaneous combustion of biomass in the carbonator, allowing for 'in situ' CO 2 capture with capture efficiencies consistently over 80%. Charitos et al (2009Charitos et al ( , 2010 from IFK in Stuttgart reported experimental results operating a much taller (12.4 m) circulating fluidized bed carbonator interconnected with a bubbling fluidized bed calciner (see Fig. 21.9), achieving for the first time capture rates close to those expected in large-scale commercial systems (up to 10 mol/m 2 s).…”

“…A similar version of this model was used by Rodríguez et al (2011a), and Alonso et al (2010Alonso et al ( , 2011c to analyse the experimental results from a 30 kW th pilot post-combustion CaL facility, including data from tests with simultaneous combustion of biomass and CO 2 capture by CaO (Alonso et al, 2011c). similar model approaches have also been used by Charitos et al (2009Charitos et al ( , 2010 to interpret results from a 10 kW scale pilot facility. More recently, both groups using a common approach (Charitos et al, 2011) have jointly interpreted their experimental results from CFb carbonators operating in continuous mode.…”

An advanced EMMS scheme for the prediction of drag coefficient under a 1.2MWth CFBC isothermal flow—Part II: Numerical implementation

“…Their inherent ability to thoroughly address complicated issues such as inert material concentration in bed, fuel mixing efficiency and temperature distribution makes them a very powerful tool for this scope. Moreover, advanced CFD modeling can accommodate the optimization of new processes such as CaO looping (Charitos et al, 2009(Charitos et al, , 2010, providing an in depth understanding of the governing hydrodynamics of such novel CFB reactors.…”