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Experimental study on nitric oxide reduction through calcium propionate reburning
- Source :
-
Energy . Feb2011, Vol. 36 Issue 2, p1003-1009. 7p. - Publication Year :
- 2011
-
Abstract
- Abstract: Performances of calcium propionate (CP) on nitric oxide (NO) reduction are experimentally investigated on a drop tube furnace system from basic reburning (BR), Thermal De-NO x and advanced reburning (AR) and it is demonstrated to be feasible of using CP as reburning fuel. BR could supply about 80% efficiency with reburning fuel fraction (Rff) and residence time (τ) kept 20–25% and 0.7 s, respectively. Also, oxygen concentration is required to be less than 4%. However, initial NO concentration is not important to reduction. Characteristics of Thermal De-NO x are also studied. The maximum efficiency of 85.34% could be achieved at 1273 K with mole ratio of ammonia to nitric oxide (β) equaling to 1.75. The corresponding “temperature window” is 1215–1341 K. From 2% to 6% of oxygen concentration, the efficiency of Thermal De-NO x is constantly depressed by 16.17%. The performances of advanced reburning are greatly optimized and higher efficiency could be achieved using less calcium propionate and ammonia. At 1273 K, efficiency of 93.37% is supplied by AR with Rff = 19.83% and β = 0.8. Also, the corresponding “temperature window” is broadened to 1195–1355 K which is 1.27 times of the one in Thermal De-NO x at β = 1.75. Meanwhile, the impact of oxygen concentration on NO reduction is weakened in AR. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03605442
- Volume :
- 36
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Energy
- Publication Type :
- Academic Journal
- Accession number :
- 57872394
- Full Text :
- https://doi.org/10.1016/j.energy.2010.12.008