CaZrO3 and SrZrO3-based CuO Oxygen Carriers for Chemical-Looping with Oxygen Uncoupling (CLOU)
Paper in proceedings, 2014

The chemical-looping combustion (CLC) and chemical-looping with oxygen uncoupling (CLOU) processes are novel solutions for efficient combustion with inherent separation of carbon dioxide. In this work, oxygen carriers based on CuO supported by zirconates of SrZrO3 and CaZrO3 are investigated. The oxygen carriers were produced by mechanical homogenization of primary solids in a rotary evaporator followed by extrusion, drying and calcination at 950 and 1030 degrees C for 6 h. Their chemical-looping performance was evaluated in a laboratory-scale fluidized-bed reactor at 900 and 925 degrees C under cyclic oxidizing, inert (N-2) and reducing (CH4) conditions. All oxygen carriers exhibited rapid release of oxygen in the inert environment (CLOU) with high conversion of methane. The carrier calcined at 1030 degrees C with SrZrO3 as support showed no agglomeration or deactivation and exhibited the highest reactivity. Thus, the use of this oxygen carrier could be of interest for the CLOU process.

chemical-looping combustion (CLC)

CO2-capture

copper oxide

zirconate

chemical-looping with oxygen uncoupling (CLOU)

oxygen carrier

Author

Mehdi Arjmand

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Abdul-Majeed Azad

University of Toledo

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Henrik Leion

Chalmers, Chemical and Biological Engineering, Environmental Inorganic Chemistry

Magnus Rydén

Chalmers, Energy and Environment, Energy Technology

Tobias Mattisson

Chalmers, Energy and Environment, Energy Technology

Energy Procedia

18766102 (ISSN)

Vol. 51 75-84

Driving Forces

Sustainable development

Areas of Advance

Energy

Subject Categories

Chemical Engineering

DOI

10.1016/j.egypro.2014.07.009

More information

Latest update

12/4/2018