- Multicycle investigation of a sol-gel-derived Fe<inf>2</inf>O<inf>3</inf>/ATP oxygen carrier for coal chemical looping combustion
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- 关键字：Coal combustion;Chemical reactors - Coal - Efficiency - Fluid catalytic cracking - Fluidized bed combustion - Fluidized beds - Hematite - Oxygen - Reactivity (nuclear) - Sol-gel process - Sol-gels;Attapulgites - Carbon conversions - Coal chemicals - Combustion efficiencies - Fe-based oxygen carriers - Fluidized bed reactors - Sol-gel approach - Synergistic reactions
- 摘要：Fe-based oxygen-carrier particles with attapulgite (ATP) as a support material for coal chemical looping combustion (CLC) have been prepared using a sol-gel approach. The multiredox characteristics of the prepared Fe4ATP6 (Fe<inf>2</inf>O<inf>3</inf>to ATP mass ratio of 40:60) were experimentally examined in a batch fluidized bed reactor at 900°C. The experimental results indicated that the synergistic reactions between ATP and Fe<inf>2</inf>O<inf>3</inf>increased the coal conversion. Fe4ATP6 exhibited high reactivity, particularly for low-rank coals, in the CLC process. The improved pore structure and surface area were responsible for the high reactivity of Fe4ATP6. In 60 redox cycles, H<inf>2</inf>was mainly generated in the outlet gas as the carbon conversion efficiency had reached 95%, and both the coal combustion efficiency and CO<inf>2</inf>capture efficiency were greater than 95%.<br/> © 2015 American Institute of Chemical Engineers.
- 卷号：62
- 期号：4
- 是否译文：否
