TERRY J LEE
Engineers in Easton, PA

4207290, Jun 10, 1980

Dec 15, 1977

5/860710

Terry J. Lee - Easton PA

Pfizer Inc. - New York NY

B01J 212, B01J 810

422109

A flue gas scrubber for removing sulfur dioxide from hot flue gas includes a scrubbing section within which wet lime or limestone slurry is tumbled through the flue gas and a drying section incorporating agitating and nodulizing portions. A chain assembly and lifting scoops in the scrubbing section tumble the wet lime or limestone slurry in intimate contact with the flue gas to react with and remove the sulfur dioxide from the gas and form a slurry reaction product. A demisting zone in the scrubbing section assists in the removal of particulate matter. An annular baffle or dam separates the scrubbing and drying sections, and the agitating portion of the drying section from the final nodulizing portion. Low dams help impede rapid passage of the slurry through the scrubber. The hot flue gas flowing through the drying section removes most of the moisture from the drying slurry reaction product to lower its free moisture content from about 50 to 80 percent by weight in the scrubbing pool to about 5 to 25 percent by weight on discharge from the drying section.