H2S adsorption from dilute streams containing He, N2, CO2, CO, and H2O was studied experimentally and by simulations for zeolites X and Y to evaluate their potential for Claus tail gas sulfur removal. Ag-X and Y were able to remove H2S in presence of all other species. CuX and CuY were efficient in removing H2S in the presence of N2, CO2, and water vapor but failed to remove H2S in presence of 2% CO. In agreement with the experimental findings, simulation results showed that Ag(I)-exchange leads to the most promising faujasite sorbent for H2S, whereas Cu(I) is subject to strong adsorption of CO, and Na, and Cu(II) are subject to strong adsorption of H2O.
Bibliographical noteFunding Information:
We thank Professor Aditya Bhan for helpful suggestions on the construction of the experimental set up. We are grateful for resources from the University of Minnesota Supercomputing Institute. Funding for this work was provided by ADGAS and GASCO, UAE and by IPRIME (NMP Program).
Copyright 2011 Elsevier B.V., All rights reserved.
- Ion exchange