This article completes the study of the regenerable desulphurization methods of the flue gases in the IGCC plants, reviewing the dry processes. These are the most energy efficient in order to recover the SO 2 obtained in the regeneration of the mixed oxide sorbents. Therefore, the energy savings are as high as possible. Five processes were analyzed: spray-drying, activated carbon, catalytic oxidation, metallic oxides and DSRP method. The catalytic oxidation of SO 2 seems to be the most attractive option because of its process economy, technical simplicity and negligible environmental impact.
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Francisca Tomás‐Alonso (2005) studied this question.
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