Deacidification

Acid gases present in the flue gases (SOx, HCl, HF) can be effectively removed by dry injection of solid basic reagents of small particle size. Area Impianti uses hydrated lime, sodium bicarbonate and carbonate, with the possibility of double injection for greater efficiency.

The choice of the most suitable reagent depends on the required efficiency levels, the type and concentration of the acids to be neutralised, the temperature of the flue gases and the treatment of the residues. With its wealth of experience, Area Impianti is at the service of the customer to find the best solutions.

The recirculation of reaction by-products can bring significant benefits in terms of consumption, improving the overall efficiency of the process.

Wet deacidification is an advanced technology based on the absorption of acids by an aqueous solution, allowing a significant reduction in pollutant emissions.

The process uses a flue gas scrubber for high efficiency capture and neutralisation of acid gases, with low residual emissions. The wet system generally consists of “scrubbing towers” or columns. The absorption stage can be acidic, for the treatment of hydrochloric acid and possibly mercury, or basic/neutral for the treatment of sulphur dioxide.

Wet deacidification systems use “scrubbing towers” or columns, which can operate in acid mode to treat hydrochloric acid and mercury, or in basic/neutral mode to treat sulphur dioxide. Commonly used basic reagents are milk of lime and soda.

Our company offers customised wet and semi-wet deacidification solutions designed to meet the specific needs of various industries. Thanks to its experience, Area Impianti can offer systems that optimise performance and extend the life of the equipment, while reducing the accumulation of residues and ensuring effective plant management.