NO/sub x/ formation in rotary kilns producing cement clinker applicable NO/sub x/ control techniques and cost effectiveness of these control techniques

Abstract

The Portland Cement Association commissioned a study of information available related to NO/sub x/ formation in rotary kilns producing cement clinker, potential NO/sub x/ control techniques, NO/sub x/ control techniques applicable to the cement manufacturing industry, and the cost effectiveness of the applicable controls. This paper is a summary of the PCA report and other articles and information concerning NO/sub x/ emissions and control related to rotary kilns in the cement manufacturing industry. Descriptions of predominate NO/sub x/ formation mechanisms and control techniques are provided. An assessment of the technical feasibility, the NO/sub x/ reduction potential, the potential effect on other pollutants, and a range of cost effectiveness for control techniques applicable to the cement manufacturing industry are provided.