Campus Units
Ames Laboratory, Chemical and Biological Engineering
Document Type
Article
Publication Version
Published Version
Publication Date
1996
Journal or Book Title
Energy & Fuels
Volume
10
Issue
3
First Page
821
Last Page
827
DOI
10.1021/ef950156y
Abstract
A unique process for regenerating calcium-based sorbents which are in the form of calcium sulfide was demonstrated by employing thermogravimetric analysis (TGA). The process converts calcium sulfide to calcium oxide by subjecting particles of the material to repeated cycles of oxidation and reduction at temperatures between 950 and 1100 °C. During each cycle a small portion of material is first converted to calcium sulfate by oxidation and then to calcium oxide by reduction. Air can be used for oxidation and any of the following gases can be used for reduction: 30 mol % CO, 5 mol % CH4, or 2 mol % C3H8. Repeated sulfidation and regeneration of typical calcium-based sorbents seems to enhance the reactivity of the materials. However, incorporation of iron oxide or flyash containing an appreciable concentration of iron oxide in the sorbent has a deleterious effect.
Copyright Owner
American Chemical Society
Copyright Date
1996
Language
en
File Format
application/pdf
Recommended Citation
Jagtap, S.B. and Wheelock, Thomas D., "Regeneration of Sulfided Calcium-Based Sorbents by a Cyclic Process" (1996). Chemical and Biological Engineering Publications. 269.
https://lib.dr.iastate.edu/cbe_pubs/269
Included in
Catalysis and Reaction Engineering Commons, Other Chemical Engineering Commons, Process Control and Systems Commons
Comments
Reprinted (adapted) with permission from Energy Fuels, 1996, 10 (3), pp 821–827. Copyright 1996 American Chemical Society.