期刊
AICHE JOURNAL
卷 53, 期 9, 页码 2432-2442出版社
WILEY
DOI: 10.1002/aic.11251
关键词
cyclic CO2 capture; limestone; pore size distribution; sintering; modeling
The importance of calcium-based sorbents, especially natural limestones, for CO2 removal necessitates an investigation into the sot-bent decay mechanism. This study starts from pore size distributions for samples from tests under various calcination/carbonation cycling conditions. A sintering model is formulated to describe the cyclic behavior of sorbents during cyclic calcination and carbonation. It explains the similar reversibility shown by sorbents under different test conditions. A balance between shorter cumulative sintering time and higher calcination rates appears to be responsible for the similar degrees of sintering and sorbent reversibility. (C) 2007 American Institute of Chemical Engineers.
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