sncr wet kilns

Information about sncr wet kilns

Published on February 11, 2008

Author: Quintilliano

Source: authorstream.com

Content

SNCR in Wet Kilns:  SNCR in Wet Kilns Installation in Lumbres, France Long wet kiln; 800 [t/d] NOx without SNCR: 1000–1300 [mg/m3] (dry, 11 [%] oxygen, daily averages) 3 atomizers for each input place Urea tank Rotating seal Urea injector Location 1 1050°C Location 2 1100°C SNCR in Lumbres:  SNCR in Lumbres SNCR in Lumbres:  SNCR in Lumbres Actual Situation:  Actual Situation Solution for the reduction: Urea (43.5 [%] and / or 33 [%]) Reduction: From 1200 [mg/m3] below 800 [mg/m3] Ammonia emission < 30 [mg/m3] In operation since 2004 without greater problems Damage and blockage of atomizers Escape of urea Water hardness Better efficiency on the «cold» injection point (1050 [°C]) Mass flow control in function of the NO concentration at the stack (emission measurement)

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