(634c) Carbon Dioxide Capture from Flue Gas By a PSA Process Utilizing a Structured Adsorbent: Full Scale Simulation with Model Validated at the Bench Scale

Authors: 
Mohammadi, N., University of South Carolina
Ebner, A. D., University of South Carolina
Ritter, J. A., University of South Carolina
Erden, L., University of South Carolina
The primary objective of this work is to carry out a comprehensive modeling study to evaluate the performance of a structured adsorbent for capturing CO2 from coal fired power plant flue gas at full process scale. This study is being carried out with the Dynamic Adsorption Process Simulator (DAPS) developed at USC and modified to account for pressure drop through a structured adsorbent with a one dimensional pressure drop correlation in place of the packed bed Ergun equation. DAPS will be validated by comparing the modeling results to experimental results obtained from a 1-bed PSA system utilizing a structured adsorbent. The model will then be used to predict the performance of the PSA cycle at the process scale. Challenges were faced in the scale up process, especially due to the high pressure drop that occurred within the structured adsorbent bed during the very low pressure regeneration steps. This presentation will present the latest results obtained by Ritter and his group.