LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION

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LIMITS OF SMALL SCALE PRESSURE SWING ADSORPTION ( limits-small-scale-pressure-swing-adsorption )

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12 10 8 6 4 2 0 0 0.3 0.6 0.9 1.2 n (mol/kg) Figure B3. Plot of nitrogen integrand for trial 8 between limits of MTZ (C/C0 =.05 and C/C0 = 0.9) B.5. Void volume analysis External void volume is known to affect chromatography results and breakthrough column analysis.6,7 However, this primarily affects low gas velocity experiments with a dilute feed composition. As has been demonstrated by Rajendran et al.,7 it is necessary to correct for the external void volume effects under these conditions. However, they also demonstrate that this correction loses significance for a concentrated feed at high gas velocities, which are the conditions used in this study. Furthermore, the residence time in the void volume for our experimental system was estimated to be over a magnitude lower than the residence time of the MTZ in the column. For example, at the conditions of run #13, it is estimated the residence time in the void volume is ~ 1s, while the residence time for the MTZ in the column is ~ 23s. 163 1/(n*-n) (kg/mol)

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