Process for dry desulfurization of flue gas

Details Process for dry desulfurization of flue gas Process for dry desulfurization of flue gas

B - Operations, Transporting

01

D

183/31

B01D 53/04 (2006.01) B01D 53/02 (2006.01) B01D 53/50 (2006.01) C01B 17/60 (2006.01)

Patent

CA 1153317

- 1 - Abstract: Sulfur oxides contained in the flue gas from coal- fired boilers are adsorbed by an adsorbent prepared by dry-distilling a portion of the fuel coal satisfying at least one of the following requirements: an ash content lower than 15 % by weight and a fixed carbon content of at least 50 % by weight; thereby producing semi coke, and activating the semi-coke by steam. After use, the adsorbent is heated to desorb the adsorbed sulfur oxides in a high concentration. The desorbed sulfur oxides are passed through a bed of semi-coke before the activation to recover the sulfur oxides as elemental sulfur.

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