Pre-treatment of lime-based sorbents using hydration

Details Pre-treatment of lime-based sorbents using hydration Pre-treatment of lime-based sorbents using hydration

B - Operations, Transporting

01

J

B01J 20/04 (2006.01) B01D 53/62 (2006.01) B01J 20/34 (2006.01)

Patent

CA 2543990

The present invention discloses a method and an apparatus for reactivating lime-based sorbents and increasing the carbon dioxide-capture capacity of the sorbent in the combustion of carbon-containing fuels. The present invention teaches the pretreatment of the lime-based sorbent using a hydration process after each process of carbon dioxide separation. The invention is useful in reducing the need to add additional sorbent to maintain the carbonation/calcination cycle. The regenerative potential of the sorbent as manifested by the present invention leads to increased carbon dioxide -capture capacity of the sorbent.

L'invention concerne un procédé et un appareil destinés à réactiver des sorbants à base de chaux et à augmenter la capacité de capture de dioxyde de carbone par le sorbant dans la combustion de carburant contenant du carbone. Cette invention concerne le prétraitement de sorbants à base de chaux par le biais d'un procédé d'hydratation après chaque procédé de séparation de dioxyde de carbone. Cette invention est utile en vue de réduire la nécessité à ajouter des sorbants supplémentaires afin de maintenir le cycle de saturation/calcination. Le potentiel régénératif du sorbant tel que manifesté dans cette invention entraîne l'augmentation de la capacité à capturer du dioxyde de carbone par ledit sorbant.

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