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Mechanism and Kinetic Modeling of Catalytic Upgrading of a Biomass-Derived Raw Gas: An Application with Ilmenite as Catalyst

Huong Nguyen (Institutionen för energi och miljö, Energiteknik) ; Nicolas Berguerand (Institutionen för energi och miljö, Energiteknik) ; Henrik Thunman (Institutionen för energi och miljö, Energiteknik)
Industrial & Engineering Chemistry Research (0888-5885). Vol. 55 (2016), 20, p. 5843-5853.
[Artikel, refereegranskad vetenskaplig]

A mechanism and kinetics to describe the catalytic upgrading of a biomass-derived raw gas is provided in this paper. The mechanism encompasses the principal trends in the evolution of tar and light hydrocarbons. Using this mechanism and a pseudotar that represents tar and light hydrocarbons formed in situ, a kinetic model is developed. The applicability of the kinetic model is demonstrated for a process-activated ilmenite. The experiments were conducted in a bench-scale, bubbling fluidized-bed reactor that was fed with a tar-rich raw gas stream from the Chalmers indirect biomass gasifier. The effects of the ilmenite on tar decomposition and total gas composition were evaluated at 800 °C for three different gas–solid contact times. Combing the experimental results and the proposed kinetic model, the evolutionary profiles of the different tar and light hydrocarbon groups can be evaluated in relation to the gas–solid contact time. The results form the basis of a process model for optimization and upscaling.



Denna post skapades 2016-05-21. Senast ändrad 2016-07-06.
CPL Pubid: 236799

 

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Institutioner (Chalmers)

Institutionen för energi och miljö, Energiteknik (2005-2017)

Ämnesområden

Katalys

Chalmers infrastruktur

Chalmers Kraftcentral (CK)