Single Tower Double Circulation Desulfurization

The SO2 removal of single tower double circulation desulfurization process is completed in two stages. In the desulfurization tower, the desulfurization area is divided into upper and lower circulation loops by liquid hopper. The lower circulation loop is composed of slurry tank of desulfurization tower, circulating pump of desulfurization tower and spray pipe system; the upper circulation loop is composed of liquid collection bucket, slurry tank / tank outside tower, slurry circulating pump outside tower and spray pipe system. A deflector is provided in the effusion hopper to distribute the flue gas evenly.

Single Tower Double Circulation Desulfurization Process Diagram and Example

The pH value of slurry tank / tank outside the tower is between 5.8 and 6.4, and the value is adjusted by the supplement of desulfurizer slurry. The operation pH value of slurry at the bottom of desulfurization tower is between 4.6 and 5.0, and its pH value adjustment is completed by slurry supplement of circulating box / pool outside the tower. The control of the two cycle processes of single tower double cycle desulfurization process is independent, which avoids the mutual restriction between parameters, and can optimize the reaction process, especially suitable for units with high sulfur content or high desulfurization efficiency.

Project example and 3D model of single tower and double cycle desulfurization tower