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Carbon Stripping - A Critical Process Step in Chemical Looping Combustion of Solid Fuels
Publikationstyp
Journal Article
Publikationsdatum
2012-03
Sprache
English
Author
Enthalten in
Volume
35
Issue
3
Start Page
497
End Page
507
Citation
Chemical Engineering and Technology 35 (3): 497-507 (2012-03)
Publisher DOI
Scopus ID
In chemical looping combustion of solid fuels the well-mixed solids flow from the fuel reactor consisting of char, ash, and oxygen carrier particles cannot be completely separated into its constituents before it enters the air reactor. The slip of carbon will thus lead to char oxidation in the wrong reactor. Process simulation was applied to investigate the carbon stripping process in chemical looping combustion of solid fuels. Depending on the fuel choice, without carbon stripping CO 2 capture rates below 50% are calculated for 4min of solids residence time in the fuel reactor. In a process with carbon stripper, however, CO 2 capture rates exceeding 90% can be achieved for both fuels investigated in this work.
Schlagworte
Carbon dioxide capture
Carbon stripping
Chemical looping combustion
Solid fuels