Publication Date:
2013-12-07
Description:
The sulfation reaction rate of CaO particles in three reactors comprising a post-combustion calcium looping system is discussed: a combustion chamber generating flue gases, a carbonator reactor to capture CO 2 and SO 2 , and an oxy-fired calciner to regenerate the CO 2 sorbent. Due to its strong impact on the pore size distribution of CaO particles, the number of carbonation/calcination cycles arises as a new important variable to understand sulfation phenomena. Sulfation patterns change as a result of particle cycling, becoming more homogeneous with higher number of cycles. Experimental results from thermogravimetric tests demonstrate that high sulfation rates can be measured under all conditions tested, indicating that the calcium looping systems will be extremely efficient in SO 2 capture. Calcium looping reactors proved to be extremely efficient in SO 2 capture. The number of carbonation/calcination cycles evolved as a new important variable to understand sulfation phenomena because of its strong impact on the pore size distribution of CaO particles. The sulfation patterns become more homogeneous with increasing number of cycles.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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