Reduction of nitrogen oxides by injection of urea in the freeboard of a pilot scale fluidized bed combustor

Share/Save/Bookmark

Knol, Koen E. and Bramer, Eduard A. and Valk, Marinus (1989) Reduction of nitrogen oxides by injection of urea in the freeboard of a pilot scale fluidized bed combustor. Fuel, 68 (12). pp. 1565-1569. ISSN 0016-2361

[img]
Preview
PDF
556Kb
Abstract:The ‘thermal deNOx’ process using urea has been investigated in a 1 MW fluidized bed combustor. NOx reductions of up to 76% were obtainable by using this method. The experimental results show that urea is at least as active as NH3, which is commonly used in this application, but which is far more toxic and corrosive. Emission levels of 200 mg m−3 for NOx could be achieved by injecting the urea at a height of 2 m above the distribution plate in a molar ratio urea:NOx = 1.5. The SO2 emission value also appeared to be reduced when the urea was injected at a urea: NOx molar ratio > 4.
Item Type:Article
Copyright:© 1989 Elsevier Science
Faculty:
Engineering Technology (CTW)
Research Group:
Link to this item:http://purl.utwente.nl/publications/70488
Official URL:http://dx.doi.org/10.1016/0016-2361(89)90295-0
Export this item as:BibTeX
EndNote
HTML Citation
Reference Manager

 

Repository Staff Only: item control page