7. Wet separators. Washers
In the field of gas and smoke purification, wet scrubbers hold a special place. A wet scrubber can be defined as a unit that brings a scrubbing liquid, such as water with or without neutralizing agents, into intimate contact with a gas or fume to be treated. In addition, its characteristic is that the washing liquid is not completely evaporated during the process. Wet scrubbers are widely used in industry to effectively reduce particulate emissions and soluble compounds such as acid gases and heavy metals. They are often combined with other technologies, in particular electrostatic precipitators. The dominant mechanism is inertial impaction, either of a particle against the wall (packings), or of a particle with a sprayed drop (rain or cross-flow scrubbers).
The trajectory of particles around a drop of water is shown in figure
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Wet separators. Washers
Bibliography
General
- Perry's Chemical Engineering Handbook, - 6e édition.
- BUONICORE, DAVIS - Air Pollution Engineering Manual. - Air and Waste Management Association, ISBN 0-442-00843-0.
Measurement and characterization
Standardization. Regulations
Association française de Normalisation AFNOR http://www.afnor.fr
- Émissions de sources fixes. Détermination de la faible concentration en masse de poussières. Partie 1 : méthode gravimétrique manuelle Indice de classement : X43-333-1. - NF EN 13284-1 - 05-2002
- 12-2004 Émissions de sources fixes. Détermination des faibles concentrations en masse de poussières - Partie 2 : systèmes automatiques de...
Organizations concerned
APAVE Association de propriétaires d'appareils à vapeur et électriques.
CETIAT Centre technique des industries aérauliques et thermiques (Villeurbanne) - http://www.cetiat.fr
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