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Solutions for Acid Gas and Mercury Removal from Clyde Bergemann

Dry scrubbing systems for removal of acid gases such as SOx, HCI and mercury

A dry scrubbing system is used to remove pollutants from an exhaust stream by injection of a reagent into the stream to neutralise or remove acid gases. Unlike wet scrubbing systems, the dry approach produces a dry residue and has no requirement for wastewater handling.

Clyde Bergemann offers two types of dry scrubbing systems, spray dryer absorbers and dry sorbent injection.

Our technologies remove gaseous pollutants and heavy metals from exhaust gas streams through the introduction of calcium, sodium and carbon based reagents to transform or capture gaseous and toxic pollutants into particulate matter which can be collected downstream in a particulate collection device (electrostatic precipitator or fabric filter).

Our technology is capable of removing more than 97% of acid gases (including SO2) from the flue gas and has demonstrated greater than 97% removal efficiency of mercury.

Our dry scrubbing technology has been successfully installed on applications such as coal-fired generation, waste-to-energy plants and biomass facilities.

Spray Dryer Absorber - precision and reliability for pollution control

Clyde Bergemann's Spray Dryer Absorber (SDA) incorporates a state-of-the-art SDA vessel with direct drive-variable speed rotary atomisers, pulse jet fabric filter design and reagent storage and preparation systems built to our specifications.

Flue gas enters the SDA system through an inlet gas disperser located at the top of the vessel. Swirl vanes in the disperser turn the gas counter-current to the rotating atomiser disk and directs it into the chamber where it comes into contact with the atomised reagent slurry.

Acid gas absorption, droplet evaporation and gas cooling occur as the flue gas mixes with the slurry. Scrubbed flue gas and entrained particulates exit through the outlet duct and are collected in the downstream particulate collector.

Your advantages

Over 97% removal of acid gases, including SO2
Precise control of droplet size
Efficient mixing of gas and atomised slurry
Rapid response to variations of gas conditions
Consistent emissions control performance
Continuous operation during system maintenance when equipped with with multiple atomisers

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