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Examination of chemical-looping combustion of gaseous fuels by 1-dimensional modeling and experiments

Jesper Aronsson (Institutionen för energi och miljö, Energiteknik) ; David Pallares (Institutionen för energi och miljö, Energiteknik) ; Anders Lyngfelt (Institutionen för energi och miljö, Energiteknik)
11th International Conference on Fluidized Bed Technology, CFB 2014; Beijing; China; 14 May 2014 through 17 May 2014 p. 673-678. (2014)
[Konferensbidrag, refereegranskat]

This work presents a 1-dimensional model for the fuel reactor in chemical looping combustion (CLC) with gaseous fuels. Modeled fuel conversion is in good agreement with experimental data from a 300W CLC unit using syngas as fuel and ilmenite as oxygen carrier. The sub-model for the solids fluid dynamics is based on semi-empirical expressions derived and typically used in regular fluidized bed air combustion. These expressions have here been experimentally validated for conditions relevant to chemical looping combustion with data from a 100 kW CLC unit and a cold flow model of the same unit. Fuel conversion is modeled accounting for both heterogeneous and homogeneous kinetics and assuming a classical twophase flow approach for which the influence of the correlation chosen for the gas interchange coefficient is found to have a slight influence the results.



Denna post skapades 2014-07-09. Senast ändrad 2016-04-28.
CPL Pubid: 200329

 

Institutioner (Chalmers)

Institutionen för energi och miljö, Energiteknik

Ämnesområden

Energiteknik

Chalmers infrastruktur