Fixed-bed adsorption for bulk component system. Non-equilibrium, non-isothermal and non-adiabatic model

Adsorption dynamics of a layered bed PSA for H2recovery from coke oven gas

“…The experimental uptake curves were directly fitted by the LDF kinetic model neglecting film mass-transfer resistance. These values agreed with the published data (Hashimoto and Smith, 1973;Gray and Do, 1991;Karger and Ruthven, 1992;Kumar, 1994;Hwang et al, 1995). When the sensitivity of LDF kinetic parameters was tested within the same order of the preceding values, no significant difference between the simulated results was found in the experimental range of this study.…”

Theoretical and experimental SO2 adsorption onto pistachio-nut-shell activated carbon for a fixed-bed column

“…Using the data from Table 1 The mass transfer coefficient k and the overall wall heat transfer coefficient h w were fitted and selected as 0.08 s −1 and 42 W/(m 2 K) respectively for the purpose of simulations. These values are comparable to those from other studies [10,12,20].…”

“…due to the heat transfer effect through the column wall in the former. For the non-isothermal cases, the comparison between the gas and solid phase concentration profiles shows that the solid phase concentration profiles (especially Q * ) have plateau zones, indicating that Q * and Q are more significantly affected by temperature effects than the gas phase concentration which was also reported by Hwang et al [12]. The formation of this plateau zone for the solid phase concentration (especially Q * ) is because the equilibrium concentration Q * is dependent not only on the gas concentration but also on the temperature.…”

“…The heat transfer coefficient from wall phase to ambient, h a , was selected as 2.1 W/(m 2 K) for stainless steel column [12,17]. The mass transfer coefficient (k) and the overall wall heat transfer coefficient (h w ) were the two remaining unknowns which were determined by matching the experimental breakthrough curves for varying concentrations and temperatures with the simulation results.…”

“…There were also studies for multi-component adsorption [9][10][11]. The fixed-bed adsorption for bulk component system was also investigated by Hwang et al [12].…”