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| Title | NOx Emissions for Lean Premixed Combustion |
| Creator | Malte, Philip C.; Steele, Robert C.; Nicol, David G.; Tonouchi, Jon H.; Jarrett, Andrew C. |
| Publisher | Digitized by J. Willard Marriott Library, University of Utah |
| Date | 1994 |
| Spatial Coverage | presented at Maui, Hawaii |
| Abstract | Lean-premixed combustion is a method by which the NOx emissions of practical gasflred equipment can be reduced to low levels. In this paper, the emission of NOx from lean-premixed combustion is examined through work conducted at the University of Washington with laboratory high intensity combustion reactors and computer models, and through a survey of the work published recently by investigators associated with the gas turbine engine manufacturers and the natural gas industry. The focus of the paper is on low emission gas turbine engines, though the fundamental results can be applied also to other gas-flred equipment. The amount of NOx formed in lean-premixed combustion is found to depend on the flame temperature, and on the degree to which the fuel and air are premixed. All cases examined show that the NOx increases exponentially with flame temperature, per an activation energy which lies between about 32 and 59kcal/gmol for most of the cases examined. This activation energy is substantially less than that for thermal NOx. Other variables affecting the NOx emission are the combustor pressure level, and the residence times of the flame zone and post-flame zone. Under some conditions, the inlet air temperature also is seen to affect the NOx emission. Trends in the NOx emissions as a function of these variables are provided and discussed. Practical levels of NOx emission are given. |
| Type | Text |
| Format | application/pdf |
| Language | eng |
| Rights | This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee. |
| Conversion Specifications | Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth. |
| Scanning Technician | Cliodhna Davis |
| ARK | ark:/87278/s6fn18s3 |
| Setname | uu_afrc |
| ID | 8985 |
| Reference URL | https://collections.lib.utah.edu/ark:/87278/s6fn18s3 |
Page Metadata
| Title | Page 18 |
| Format | application/pdf |
| OCR Text | Show |
| Setname | uu_afrc |
| ID | 8980 |
| Reference URL | https://collections.lib.utah.edu/ark:/87278/s6fn18s3/8980 |