Principles. ● Cooling of the gases from direct furnace evacuation by injection of atomised water into water spray chamber. ● Variable regulation of the injected water amount main- taining the outlet temperature of the HTQ below the temperature level of the dioxin/furan de- novo-synthesis and protecting the bag house against peak temperatures. ● Increase of dedusting system efficiency by reducing the DEC system offgas volume and dust load on the filter. Concept. ● Atomising of the water by nitrogen or compressed air in spray lances. ● Supply of water and air/ni- trogen controlled automatically by a state-of-the-art valve rack. ● Water amount correlating with the process stage/offgas temperature providing a full evaporation of the water in the spray chamber, even at low temperatures. ● Dust removal at the bottom of the spray chamber tower by front-end loader. Advantages. ● Lower pressure drop in the DEC duct. ● Less water-cooled duct surface area required. ● Less dust deposit in the ducts. ● Elimination of tubular cooler and booster fans. ● Better bag house utilisation by reduced and stable temperature. ● Economical solution for dioxin and furan reduction. ● Quick and easy maintenance. ● Low operating costs. High Temperature Quenching Rapid offgas cooling for increase of performance and decrease of dioxin emissions Badische Stahl-Engineering GmbH Robert-Koch-Straße 13 D-77694 Kehl/Germany Phone (+49) 78 51/877- 0 Fax (+49) 78 51/877-133 eMail [email protected] www.bse-kehl.de Tailor-made engineering and design based on enhanced CFD Simulation Advanced valve rack technology for smart control of the water and air/nitrogen supply Atomised water injected into water spray chamber by multiple spray lances