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Simultaneous reduction of SO2 and NOx in an entrained-flow reactor

Wang, Wuyin LU ; Zhong, Q; Ye, ZC and Bjerle, Ingemar LU (1995) In Fuel 74(2). p.267-272
Abstract
Simultaneous SO2 and NOx reduction in flue gas by the dry furnace sorbent injection process was simulated with an entrained-flow reactor. Several ammonium salts as well as urea were tested. Urea was found to give the highest NOx removal efficiency. By using urea-limestone sorbent, >90% SO2 removal and >80% NOx removal were obtained at Ca/S and N/NOx ratios both equal to 2. The DeNO(x) process is more temperature-sensitive than the DeSO(2) process, and 900 degrees C can be chosen as the overall optimum temperature. The N2O formed was <10 ppmv at 2 s residence time. A reductive path from NO2 or NO to N-2 is proposed to explain the experimental results.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
FLUE GAS, DESULFURIZATION, NOX REMOVAL
in
Fuel
volume
74
issue
2
pages
267 - 272
publisher
Elsevier
external identifiers
  • wos:A1995QH99300019
  • scopus:0029251166
ISSN
1873-7153
DOI
10.1016/0016-2361(95)92664-R
language
English
LU publication?
yes
id
ef3f0d42-5047-48c4-b819-3660cc607e38 (old id 3916715)
date added to LUP
2013-07-03 07:51:20
date last changed
2017-01-01 06:58:57
@article{ef3f0d42-5047-48c4-b819-3660cc607e38,
  abstract     = {Simultaneous SO2 and NOx reduction in flue gas by the dry furnace sorbent injection process was simulated with an entrained-flow reactor. Several ammonium salts as well as urea were tested. Urea was found to give the highest NOx removal efficiency. By using urea-limestone sorbent, &gt;90% SO2 removal and &gt;80% NOx removal were obtained at Ca/S and N/NOx ratios both equal to 2. The DeNO(x) process is more temperature-sensitive than the DeSO(2) process, and 900 degrees C can be chosen as the overall optimum temperature. The N2O formed was &lt;10 ppmv at 2 s residence time. A reductive path from NO2 or NO to N-2 is proposed to explain the experimental results.},
  author       = {Wang, Wuyin and Zhong, Q and Ye, ZC and Bjerle, Ingemar},
  issn         = {1873-7153},
  keyword      = {FLUE GAS,DESULFURIZATION,NOX REMOVAL},
  language     = {eng},
  number       = {2},
  pages        = {267--272},
  publisher    = {Elsevier},
  series       = {Fuel},
  title        = {Simultaneous reduction of SO2 and NOx in an entrained-flow reactor},
  url          = {http://dx.doi.org/10.1016/0016-2361(95)92664-R},
  volume       = {74},
  year         = {1995},
}