Reducing NOx on existing cement lines

In cement lines, significant masses of NOx can be formed both in the rotary kilns and the precalciners. To reduce NOx formation, kiln burners applying Low NOx techniques can be used for the rotary kilns while low NOx combustion systems can be implemented on the existing precalciners. These techniques have the dual advantage of low CAPEX solutions and also have no additional operating cost. .
When these combustion techniques cannot reduce the NOx emissions, to desired level specified by local Pollution Control Boards ; some clever SNCR systems, using ammonia or urea, can be implemented in addition to the combustion techniques to bring down NOx in order to satisfy the most stringent emission levels specified by local emission regulatory authorities.
Author: L. Ricci

Share:  
You can apply for a subscription or order a specific issue of our journal here.
The use of materials published on the site is allowed only with reference to the source (the journal «Cement and its application») and a hyperlink to the quoted material.
© 2007-2022 PetroCem Ltd
Privacy policy