Abstract
Chemical-looping combustion (CLC) is a combustion technology with inherent separation of the greenhouse gas CO2. The technique involves the use of a metal oxide as an oxygen carrier that transfers oxygen from the combustion air to the fuel. The use of iron oxide as an oxygen carrier has been investigated. Particles composed of 40−80 wt % Fe2O3, together with Al2O3, ZrO2, TiO2, or MgAl2O4, have been prepared by freeze granulation. Particles have been sintered at different temperatures in the range of 950−1400 °C, and particles 0.125−0.180 mm in diameter have been obtained by sieving. The reactivity of the oxygen-carrier particles has been evaluated in a laboratory fluidized bed of quartz, where the alternating atmosphere that an oxygen carrier encounters in a CLC system is simulated by exposing the sample to alternating reducing (50% CH4, 50% H2O) and oxidizing (5% O2) conditions at a temperature of 950 °C. The oxides are characterized prior to, and following, reactivity testing, with respect to crushing s...
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
