Research and development of the low NOx radially stratified flame core (RSFC) burner is followed from its fundamental concept through prototype burner design, pilot scale experiments at M.I.T. and scale-up and commercial design by ABB-CE (now ALSTOM Power) to applications in industrial and utility plant boilers. The principle that turbulence can be significantly damped in a rotating flow field with a strong positive radial density gradient was used to increase the fuel rich zone residence time in internally staged low NOx burners. The continuous interaction of ideas from laboratory experimental and computational studies with those from the commercial design and industrial scale tests played a pivotal role in the development of the final product, the commercial RSFC burner. Examples of application in gas, oil, and coal fired industrial and utility boilers are discussed.

Issue Section:
Fuels and Combustion Technology
Keywords:
nitrogen compounds, combustion, product design, flames, industrial plants, boilers, environmental factors
Topics:
Boilers, Coal, Combustion, Flames, Fuels, Nitrogen oxides, Emissions, Flow (Dynamics)
1.
Miller
,
J. A.
, and
Bowman
,
S. T.
,
1989
, “
Mechanism and Modeling of Nitrogen Chemistry in Combustion
,”
Prog. Energy Combust. Sci.
,
15
, p.
287
287
.
2.
Bowman, S. T., 1992, Twenty-Fourth Symposium International on Combustion, (Invited Lecture), The Combustion Institute, Pittsburgh, PA, pp. 859–878.
3.
Bee´r, J. M., 1988, “Stationary Combustion; The Environmental Leitmotiv,” The H.C. Hottel Plenary Lecture, Proc. Comb. Inst. The Combustion Institute, Pittsburgh, PA, pp. 1–16.
4.
Emmons, H., W., and Shu Jing Ying, 1967, Proc. Comb. Inst. The Combustion Institute, Pittsburgh, PA, pp. 475–488.
5.
Chigier
,
N. A.
,
Bee´r
,
J. M.
,
Grecov
,
D.
, and
Bassindale
,
K.
,
1970
, “
Jet Flames in Rotating Flow Fields
,”
Combust. Flame
,
14
, p.
171
171
.
6.
Bee´r
,
J. M.
,
Chigier
,
N.
,
Davies
,
T. W.
, and
Bassindale
,
K.
,
1971
, “
Laminarization of Turbulent Flames in Rotating Environments
,”
Combust. Flame
,
16
, p.
39
39
.
7.
Bee´r, J. M., Marotta, A., Toqan, M. A., 1955, “Combustion System for Reduction of Nitrogen Oxides,” U.S. Patent. Assignee: M.I.T.
8.
Toqan, M. A., Bee´r, J. M., Jansohn, P., Sun, N., Shihadeh, A., and Teare, J. D., 1992, “Low NOx Emission From Radially Stratified Natural Gas-Air Turbulent Diffusion Flames,” Twenty-Fourth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, PA, pp. 1391–1397.
9.
Shihadeh, A. L., Toqan, M. A., Bee`r, J. M., Lewis, P. F., Teare, J. D., Jimenez, J. L., and Barta, L., 1994, “Low NOx Emission from Aerodynamically Staged Oil-Air Turbulent Diffusion Flames,” FACT, 18, ASME, New York, pp. 195–200.
10.
Rodgers, L. W., Sivy, J. L., J. L. Koslosky, J., Gorell, Bee´r, J. M., Lewis, P., and Barta, L., 1994, “NOx Control update for Low Emission Boiler System,” Eleventh Annual International Pittsburgh Coal Conference, U.S. D.O.E. Sept.
11.
Sun, Norman, 1994, “Numerical Modeling and Experimental Investigation of Radially Stratified Low NOx Natural Gas Flames,” MS thesis, Department of Mechanical Engineering, M.I.T., Cambridge, MA.
12.
Haynes, J. M., 1996, “Aerodynamic Design of Low NOx Diffusion Flames Using the Radially Stratified Flame Core Burner,” Ph.D. thesis, M.I.T. Feb.
13.
Haynes, J. M., et al., 1996, “Aerodynamic Modeling and Scale-Up of a Low NOx Oil Burner,” Int. Joint Power Gen Conference, 4, FACT-Vol. 21, ASME, New York, pp. 313–323.
14.
Toqan, M. A., Nicholson, O. G., Briggs, O., Borio, R.-W., and Bee´r, J. M., 1997, “Low NOx Burners for Boilers and Furnaces: Design and Application,” Power-Gen, Madrid.
15.
LaFlesh, R., Briggs, O., Barlow, D., and Wessel, G., 1999, “Update on ABB C-E’s RSFC Low NOx Wall Burner Technology,” Int. Join Power Generation Conf., San Francisco, FACT-Vol. 23, ASME, New York, 1, pp. 63–70.
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