TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION

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TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION ( temperature-swing-adsorption-processes-for-gas-separation )

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with the full process model and it is assumed that the requisite species and the temperature values are available at the channel inlet as needed by the corresponding stage. A hypothetical model for valves, with a valve time constant, CT, of 0.1 s, is inserted in the boundary conditions equation as shown in Equation (2.24), to avoid simulation failures due to a sudden change of equations. The solenoid valve used in the experimental set-up by Moore et al. (2016), is found to have a response time of 0.04 s, substantiating the value chosen here for CT. d BC Actual  1 BCAssigned  BCActual  (2.24) dt CT Table 2.3. Boundary Conditions for the microchannel species and energy equations. Stage of the cycle Adsorption Displacementofgasand Desorption BC - channel Inlet yi z0 yi,feed Tg z0 T0 Cg,i z0 [102,102] T T BC - channel Outlet Cg,i 0 z zL g z0 deso Cooling Cg,i [102,102] g 0 T z0 z zL The performance indicators for the entire purification process are the bulk methane purity and the methane yield per unit adsorbent mass. These parameters are monitored to evaluate the process performance and to provide a platform for comparison with other existing purification technologies. Equations used to determine the product Displacement of liquid and Purge Tg z0 T0 yi z0  yi,Prod Tg z0 T0 2.2.8 Product purity and yield 40

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TEMPERATURE SWING ADSORPTION PROCESSES FOR GAS SEPARATION

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