Patent ID: 7335340
Filing Date: 2008-02-26
Classification: B01D,B01J,B32B,C04B

Abstract:
1. A flue gas processing apparatus comprising: a plurality of catalyst stages provided in the apparatus in the form of a tower through which a discharge gas containing sulfur oxide passes; water-supplying means for supplying water for producing sulfuric acid to each catalyst stage, the catalyst stages being formed of at least one activated carbon fiber board, and the water-supplying means being provided above each catalyst stage and in the apparatus in the form of a tower; oxygen concentration detection means for detecting an oxygen concentration of the discharge gas passing through the tower; sulfur oxide concentration detection means for detecting a sulfur oxide concentration on a gas-outlet side of each said catalyst stage and on a gas-inlet side of the farthest upstream catalyst stage; and control means for controlling supply conditions of water supplied from said water-supplying means on the basis of detected information provided from the oxygen concentration detection means and the sulfur oxide concentration detection means.