Power - FGD

Process

Forced Oxidation Air in Wet Flue Gas Desulfurization Systems.

Description

Flue Gas Desulphurization Systems remove sulfur dioxide from coal or other sulfur containing fuels. Hoffman and Lamson blowers provide air and mixing to allow effective removal of the byproducts of this process. To do this, a water slurry of ground limestone is used to absorb the SO2 from flue gas. The flue gas is directed to a spray tower (or absorber) where the slurry is sprayed over the flue gas. The dissolved SO2 forms calcium sulfite. Forced oxidation from Hoffman and Lamson blowers oxidizes the calcium sulfite into calcium sulfate. This byproduct can be land filled or sold as gypsum for building materials.

Hoffman™ and Lamson™ Products

Typical airflow is in the 10-15,000 scfm range, with minimum flows of 4-5,000 scfm and maximum flows of in excess of 25,000 scfm per blower. Pressure requirements can be as low as 7-8 psig with maximum pressure requirements of 22 psig, such as situations with deep tanks. Typical requirements for most scrubbers are between 10-15 psig.