Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture

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Development of a Pressure Swing Adsorption (PSA) Cycle for CO2 Capture ( development-pressure-swing-adsorption-psa-cycle-co2-capture )

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Temp Exp Feed CO2 Conc. PL R.R. HP CO2 Rec [%] HP CO2 Pur [%] [°C] 70 100 25 [%] [kPa] [%] Experiment Modeling Experiment Modeling E-1 16.00 E-2 16.05 E-3 16.05 E-5 16.00 E-6 16.00 E-11 10.04 E-13 16.00 E-17 15.99 5.02 2.0 91.68 5.01 3.0 90.81 5.12 4.0 94.06 6.94 4.0 87.16 10.28 4.0 70.39 5.06 3.0 90.62 5.02 3.0 93.17 5.50 3.0 91.66 88.64 96.83 90.11 95.43 92.10 96.54 86.15 95.93 70.00 93.68 87.32 86.79 91.00 97.61 81.13 96.05 95.87 95.58 95.60 95.72 94.28 86.24 96.86 93.60 Table 4.3 Summary of PSA cycle experimental results compared with simulation. The more energy consumption is due to the higher flow rate. The base case met the DOE criteria of 90% CO2 recovery, 95% CO2 purity and energy consumption of less than 20 kJ/mol CO2 captured. Figure 4.8 shows the energy consumption for three different CnD pressures (PL), 5, 7 and 10 kPa. The highest pressure of the process (PH) was kept constant for all three runs. As it can be seen from Figure 4.8 that the energy consumption is lower for 7 kPa as Experiment E-1 5.92 E-2 6.26 E-3 6.58 E-5 5.39 E-6 4.42 E-11 4.48 E-13 6.80 E-17 5.03 Energy [kJ/mol of CO2] 17.93 18.63 19.17 16.73 17.10 22.02 20.12 16.70 Energy [kJ] Table 4.4 Energy consumption selected experiments from simulation 33

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