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Title: Premixed burner studies of NO{sub x} formation and control

One of the primary reasons for using this type of premixed, flat flame burner is that it is essentially one-dimensional (1-D), i.e., that important parameters such as temperature are nearly constant in regions near the central vertical axis of the burner for a fixed height above the burner surface. As a result of this 1-D nature, computer codes such as Sandia National Laboratory`s PREMIX can be used to model the important chemical interactions involved in the combustion processes. These predictions can be compared with experimental measurements to gain valuable insight into the formation of nitrogen oxides. The bulk of the burner experiments performed to date have been focussed primarily toward characterization of burner and the sample extraction and analysis system. All experiments thus far have been for methane/air flames at one atmosphere pressure. Figure 2 shows the burner centerline temperature profile for an equivalence ratio of {Phi} = 0.87. The sharp peak in temperature near 0.3 cm corresponds to the luminous zone of the flame. The high temperature in the luminous zone shows an abrupt decay with increasing height above the burner. The temperature gradient in the non-luminous post-flame zone is much smaller, approximately 2.5{degree}C decrease in temperature for eachmore » millimeter increase in height over the range of 1.3 to 4 cm above the burner. Radial temperature profiles have also been measured to assess the onedimensional nature of this burner.« less
Authors:
; ;  [1] ;  [2]
  1. Department of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center
  2. National Research Council, Washington, DC (United States)
Publication Date:
OSTI Identifier:
10104861
Report Number(s):
DOE/METC/C--94/7105; CONF-930893--36
ON: DE94002976; NC: NONE
Resource Type:
Conference
Resource Relation:
Conference: Joint contractors meeting on advanced turbine systems, fuel cells and coal-fired heat,Morgantown, WV (United States),3-5 Aug 1993; Other Information: PBD: [1993]
Research Org:
Department of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
20 FOSSIL-FUELED POWER PLANTS; NATURAL GAS; COMBUSTION; BURNERS; AIR POLLUTION CONTROL; NITROGEN OXIDES; FLAMES; MATHEMATICAL MODELS; TEMPERATURE GRADIENTS; COAL GAS; DESIGN; BENCH-SCALE EXPERIMENTS; METHANE 200202; NOXIOUS GAS AND PARTICULATE EMISSIONS