Chemical Looping Combustion of Solid Fuels in a 10 kWth Unit
Artikel i vetenskaplig tidskrift, 2011

Chemical Looping Combustion of Solid Fuels in a 10 kW(th) Unit - The present study is based on previous results from batch experiments which were conducted in a 10 kW(th), chemical looping combustor for solid fuels using ilmenite, an iron titanium oxide, as the oxygen carrier with two solid fuels: a Mexican petroleum coke and a South African bituminous coal. These experiments involved testing at different fuel reactor temperatures, up to 1030°C, and different particle circulation rates between the air and fuel reactors. Previous results enabled modeling of the reactor system. In particular, it was possible to derive a correlation between measured operational data and actual circulation mass flow, as well as a model that describes the carbon capture efficiency as a function of the residence time and the char reactivity. Moreover, the kinetics of char conversion could be modeled and results showed good agreement with experimental values. The purpose of the present study was to complete these results by developing a model to predict the conversion of syngas with ilmenite in the fuel reactor. Here, kinetic data from investigations of ilmenite in TGA and batch fluidized bed reactors were used. Results were compared with the actual conversions during operation in this 10 kW(th) unit.

ilmenite

in-situ gasification

petroleum coke

co2

coal

oxygen carrier

operation

Författare

Nicolas Berguerand

Chalmers, Energi och miljö, Energiteknik

Anders Lyngfelt

Chalmers, Energi och miljö, Energiteknik

Tobias Mattisson

Chalmers, Energi och miljö, Energiteknik

Pontus Markström

Chalmers, Energi och miljö, Energiteknik

Oil and Gas Science and Technology

1294-4475 (ISSN)

Vol. 66 181-191

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Kemiteknik

DOI

10.2516/ogst/2010023