Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 164, Issue -, Pages 146-150Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2015.09.001
Keywords
Sintering flue gas; Sintered ore; NH3-SCR; Denitration
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Funding
- National Natural Science Foundation of China [51476118, 51576146]
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In this paper, the selective autocatalytic reduction of NO by NH3 combined with multi-metal oxides in the hot sintered ore was studied, and the catalytic activity of the hot sintered ore was investigated as a function of temperature, NH3/NO ratio, O-2 content, H2O and SO2. The experimental results indicated that the hot sintered ore, when combined with NH3, had a maximum denitration efficiency of 37.67% at 450 degrees C, 3000 h(-1) gas hourly space velocity (GHSV) and a NH3/NO ratio of 0.4/1. Additionally, it was found that O-2 played an important role in removing NOx. However, high O-2 content had a negative effect on NO reduction. H2O was found to promote the denitration efficiency in the absence of SO2, while SO2 inhibited the catalytic activity of the sintered ore. In the presence of H2O and SO2, the catalytic activity of the sintered ore was dramatically suppressed. (C) 2015 Elsevier Ltd. All rights reserved.
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