NOX REDUCTION BY HYDRAZINE IN A PILOT-SCALE REACTOR

The effects of the hydrazine molar ratio, reaction temperature and add ition of CO on the NOx reduction in flue gas containing 12% oxygen wer e determined in a pilot-scale flow reactor. The optimum reaction tempe rature and molar ratio for maximum NOx reduction were found to be abou t 873 K and 4.0, respectively. With CO, hydrazine provides a wider tem perature window for effective NOx reduction. The proposed model predic ts the reduction of NO reasonably well at high oxygen content. (C) 199 8 Elsevier Science S.A. All rights reserved.