CO2 captured from flue gas using the PSA process

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CO2 captured from flue gas using the PSA process ( co2-captured-from-flue-gas-using-psa-process )

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Energies 2021, 14, 3582 11 of 15 Energy consumption (GJ/tonne − CO2) = 1.1382 + 0.714472 (1/atm) A + 1.09506 (1/atm) B + 0.448582 (1/atm) C − 0.0099 (1/K) D + 0.00436957 (1/s) E − 0.00259758 (1/s) F + 0.0097060 (1/cm) G − 0.038474 (1/atm2) A · A + 36.4096 (1/atm2) B · B + 0.0355262 (1/atm2) C·C+1.85·10−5 (1/K2)D·D+6.29·10−6 (1/s2)E·E+ 6.12·10−6 (1/s2)F·F+1.85442·10−4 (1/cm2)G·G−0.0859038(1/atm2)A·B− 0.00750255(1/atm2)A·C−2.83·10−4 (1/atm·K)A·D+ 0.00132517(1/atm·s)A·E−2.33·10−4 (1/atm·s)A·F− 0.00373936 (1/atm · cm) A · G − 4.36119 (1/atm2) B · C − 0.00479232 (1/atm · K) B · D + 0.032285 (1/atm · s) B · E + 0.0011352 (1/atm · s) B · F − 0.08924(1/atm·cm)B·G+7.96313·10−4 (1/atm·K)C·D− 0.005784(1/atm·s)C·E−1.21·10−4 (1/atm·s)C·F+0.00448796(1/atm·cm) C·G−5.44·10−6 (1/K·s)D·E−1.27·10−6 (1/K·s)D·F− (9) 12 of 15 Energies 2021, 14, x FOR PEER R−EV5 IEW −6 2 −5 1.23·10 (1/K·cm)D·G−7.19·10 (1/s )E·F−6.56·10 1.20·10−5 (1/s·cm)F·G (1/s·cm)E·G− Figure8..Opttiimallresponseofregressionfrompurity, recovery,,andenerrgycconssumpttiion.. Table 9. Optimal operating conditions for capturing CO2 from flue gas using the three-bed nine-step PSA process. Parameters Feed composition Feed flow rate (m3/s, NTP) Bed length (m) Bed inner diameter (m) Bed volume (L) Bed porosity (-) Fluid viscosity (kg/m·s) Overall heat transfer coefficient (J/K· m2 ·s) Feed temperature (K) Surrounding temperature (K) Feed pressure (atm) Vacuum pressure (atm) Values 13.5 vol% CO2 and 86.5 vol% N2 1.21 × 10−3 0.46 0.16 9.25 0.6937 1.87 × 10−5 10.8 303.14 323.14 3.66 0.05

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