Measuring attrition resistance of oxygen carrier particles for chemical looping combustion with a customized jet cup
Journal article, 2014

A customized jet cup for measuring attrition resistance of oxygen carrier particles for chemical looping combustion has been constructed and used to evaluate 25 different material samples, all of which previously have been subject to continuous operation in chemical looping reactors at Chalmers University of Technology. The effect of continuous operation has been assessed by comparing attrition behavior of fresh particles with that of used ones. It is concluded that the correlation between the jet cup tests and operational experience is robust, and that there is always considerable difference in attrition resistance between fresh and used particles of the same batch. Composite materials with NiO or Fe2O3 as active phase and Al2O3-, NiAl2O4- or MgAl2O4-based support and materials based on the CaMnO3-δ perovskite structure typically had high attrition resistance, which improved further following operation with fuel. Combined (FexMn1-x)2O3 oxides and all materials containing smaller or larger amounts of either CuO or ZrO2 experienced reduced attrition resistance during operation with fuel, and usually also had low attrition resistance to begin with. Fresh particles of the commonly used oxygen carrier ilmenite had reasonably high attrition resistance, while ilmenite that had been subject to chemical looping combustion of natural gas showed higher rate of attrition. No strong correlation between the commonly used crushing strength index and attrition resistance measured with jet cup could be established, but it was clear that particles with a crushing strength above 2N were much more likely to have high attrition resistance compared to softer particles. As compared to crushing strength, the jet cup testing was better correlated to attrition in actual operation.

Oxygen carrier particles

Chemical looping reforming

Jet cup

Fluidization

Attrition

Chemical looping combustion

Author

Magnus Rydén

Chalmers, Energy and Environment, Energy Technology

Patrick Moldenhauer

Chalmers, Energy and Environment, Energy Technology

Simon Lindqvist

Chalmers, Energy and Environment, Energy Technology

Tobias Mattisson

Chalmers, Energy and Environment, Energy Technology

Anders Lyngfelt

Chalmers, Energy and Environment, Energy Technology

Powder Technology

0032-5910 (ISSN)

Vol. 256 75-86

Innovative Oxygen Carriers Uplifting chemical-looping combustion (INNOCUOUS)

European Commission (FP7), 2010-10-01 -- 2015-04-30.

Novel combustion principle with inherent capture of CO2 using combined manganese oxides that release oxygen (NOCO2)

European Commission (FP7), 2012-03-01 -- 2017-02-28.

Driving Forces

Sustainable development

Subject Categories

Energy Engineering

Manufacturing, Surface and Joining Technology

Chemical Process Engineering

Areas of Advance

Energy

Materials Science

DOI

10.1016/j.powtec.2014.01.085

More information

Created

10/7/2017