Operation of a 100 kW chemical-looping combustor with Mexican petroleum coke and Cerrejón coal
Journal article, 2014

This study describes the design and operation of a 100 kW chemicallooping combustor for solid fuels. Six experiments of continuous operation, varying between 8 and 32 minutes in length, have been conducted. The fuels investigated were a Mexican petroleum coke and a bituminous coal from Cerrejón in Colombia. Overall, it was found that operation was stable and loss of char to the air reactor was small, meaning that the CO2 capture efficiency was high (up to 90% at temperatures close to 950°C in the fuel reactor). Gas concentration measurements showed the presence of unconverted CO, H2 and CH4 corresponding to an oxygen demand of around 20%, depending on the fuel reactor temperature. In addition, a residence-time analysis was conducted from a batch experiment, enabling an estimation of the mass flow of oxygen carriers through the system using the riser pressure drop in the air reactor.

Solid fuel


Oxygen demand

Chemical-looping combustion

CO2 capture


Pontus Markström

Chalmers, Energy and Environment, Energy Technology

Carl Johan Linderholm

Chalmers, Energy and Environment, Energy Technology

Anders Lyngfelt

Chalmers, Energy and Environment, Energy Technology

Applied Energy

0306-2619 (ISSN) 18729118 (eISSN)

Vol. 113 1830-1835

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Areas of Advance



Basic sciences



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