What is the main difference between DSI and a wet scrubber?

DSI uses a dry reagent and the reaction product is captured in the existing bag filter, whereas a wet scrubber uses liquid reagent in a scrubbing tower and generates wastewater.

Is DSI compatible with my existing bag filter?

Yes — DSI is typically integrated upstream of the existing bag filter; the filtration area and pressure-drop margin should be re-checked.

Which sorbent should be used?

Sodium bicarbonate or trona usually performs best for SO2-driven emissions; hydrated lime is typical for HCl/HF-driven emissions.

DSI Dry Sorbent Injection

DUCON Systems provides several types of Dry FGD systems:

Dry Sorbent Injection, Dry Circulating Reactor, and semi dry FGD system, to remove Sulfur dioxide, hydrogen chloride, and other toxic gaseous components and particulate from flue gases.

DUCON can use several chemical reagents, such as:

lime, trona, or soda ash depending upon the system requirements. A dry system utilizes either a Baghouse or an Electrostatic Precipitator for particulate removal. DUCON Environmental Systems can also recover Mercury, Dioxins, and other heavy metals by injecting impregnated activated carbon. In a semi dry system DUCON uses two-fluid nozzles to atomize a liquid reagent slurry into fine droplets that while evaporating also cause gaseous pollutant removal. All dry FGD system generate dry waste product and use less water as compared to a wet system. DUCON can supply dry FGD systems for inlet SO2 concentrations of over 3000 mg/Nm3 and can achieve upto 99% pollutant removal efficiencies. All dry FGD systems are custom engineered for each application

Dry Collection Systems

Wet Collection Systems

Pneumatic Conveying Systems

Industries

DSI Dry Sorbent Injection