387300 Extending the Concept of Parasitic Energy By Introducing Water Competition

Tuesday, November 18, 2014: 5:03 PM
310 (Hilton Atlanta)
Johanna M. Huck1,2, Lennart Joos1, Li-Chiang Lin1, Adam H. Berger3, Abhoyjit S. Bhown3, Karsten Reuter2 and Berend Smit1,4, (1)Chemical and Biomolecular Engineering, University of California-Berkeley, Berkeley, CA, (2)Chemie, Technische Universität München, Garching, Germany, (3)Electric Power Research Institute, Palo Alto, CA, (4)Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA

A promising way to significantly reduce the CO2 emission of power plants is Carbon Capture and Sequestration (CCS). Separating and compressing CO2, however, impose a large additional energy load on power plants, which in turn is not available for electricity production. The concept of parasitic energy predicts and minimizes the additional energy load on a material-by-material basis and hence, is considered a potential means to evaluate materials for CCS. Besides CO2 and N2, water plays a crucial part in CCS, due to its high affinity to bind to the adsorption sites designated for CO2, which poses a special challenge to the separation process. 

On the basis of Grand Canonical Monte Carlo (GCMC) simulations we calculate and implement water isotherms of all-silica zeolites to ensure a more realistic prediction of parasitic energy. Several flue gas compositions are analyzed, including direct air capture, to illustrate the difference in parasitic energy requirement induced by the change in CO2 concentration. 

Extended Abstract: File Not Uploaded
See more of this Session: CO2 Capture By Adsorption II: Adsorbents
See more of this Group/Topical: Separations Division