Sulfur dioxide removal from gases using a modified lime

Details Sulfur dioxide removal from gases using a modified lime Sulfur dioxide removal from gases using a modified lime

B - Operations, Transporting

01

D

B01D 53/14 (2006.01) B01D 53/50 (2006.01) C04B 2/06 (2006.01)

Patent

CA 2050944

A wet scrubbing process for removing sulfur dioxide from combustion gases uses an aqueous slurry containing calcium components resulting from the slaking of lime, with the slaked lime formed by mixing lime with water containing a calcium sulfur-oxide salt. The presence of the calcium sulfur oxide salt in the slaking water results in a more easily dewatered sludge that is subsequently removed from the wet scrubbing system.

Un procédé d'épuration humide pour éliminer le dioxyde de soufre présent dans les gaz de combustion fait appel à une suspension aqueuse contenant des constituants du calcium provenant de l'extinction de la chaux, la chaux éteinte formée par le mélange de la chaux avec de l'eau contenant un oxyde de soufre calcique. La présence de l'oxyde de soufre calcique dans l'eau d'extinction est à l'origine d'une boue plus facilement déshydratée qui est par la suite éliminée du système d'épuration humide.

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