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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100 80 60 40 20 100 0 Bed-1 Bed-2 Bed-3 Top 600 720 0 Bed-3 Bottom Bed-1 Bed-2 Bed-3 Middle 600 720 T-4 120 240 360 480 Bed-1 Bed-2 120 240 360 480 T-1 T-2 T-3 T-5 T-6 T-7 Bed-1 600 720 80 60 40 20 0 120 240 Temperature [oC] Temperature [oC] 360 480 600 720 0 Time [sec] 120 240 360 480 Time [sec] Figure 4.1 Periodic state temperature profiles of bed-1,2 and 3 for the experiment E-1; a) top thermocouple placed at 70.31% of length of each bed, b) middle thermocouple placed at the 47.26% of length of each bed, c) bottom thermocouple placed at the 24.20% of the length of each bed, d) temperature history of bed-1 at 7 different equidistant locations along the bed (1:12.68%, 2:24.20%, 3:35.73%, 4:47.26%, 5:58.78%, 6:70.31%, 7:81.83%). behavior of all the beds are similar at the periodic state. The periodic state temperature profiles of all seven thermocouples has been plotted in Figure 4.1(d). The temperature profiles shows the progression of the concentration wave through the bed. The first temperature peak corresponds to the temperature rise due to the feed gas. However, the higher temperature peak corresponds to the temperature rise due to higher concentration heavy reflux stream. Figure 4.2(a) shows the periodic state pressure profiles of all three beds for a complete PSA cycle of the run E-1. It is evident from Figure 4.2(a) how the beds 22

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