Dry Scrubbing Systems

Clyde Bergemann EEC’s Spray Dryer Absorber (SDA) and Dry Injection (DI) technologies remove gaseous pollutants and heavy metals from exhaust gas streams through the introduction of calcium, sodium and carbon based reagents to transform gaseous pollutants into particulate matter which can be collected downstream in a particulate collection device (ESP or fabric filter).  The Company’s technology is capable of removing more than 90% of acid gases from the flue gas and has demonstrated 85% removal efficiency of mercury. The Clyde Bergemann EEC and its predecessor company Environmental Elements technology has been applied to the power generation, municipal solid waste and incineration markets.

SDA Systems

Clyde Bergemann EEC offers Spray Dryer Absorber (SDA) systems for coal fired boilers and waste incinerators. Our systems incorporate our state-of-the-art Spray Dryer Absorber (SDA) vessel and Fabric Filter design, direct drive-variable speed Rotary Atomizers and reagent storage and preparation systems built to our specifications. Flue gas enters the SDA System through a gas disperser located at the top of the vessel. Swirl vanes in the disperser turn the gas counter-current to the rotating atomizer disk and directs it into the chamber where it comes into contact with the atomized reagent slurry. Acid gas absorption, droplet evaporation and gas cooling occur as the flue gas mixes with the slurry. Scrubbed flue gas and entrained particulate exit through the outlet duct and are collected in the downstream particulate collector.

System Features & Benefits

• Precise control of droplet size
• System reliability
• Efficient mixing of gas and atomized slurry
• Rapid response to variations of gas conditions
• Consistent performance
• Continuous operation during system maintenance with multiple atomizers