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CFD Modeling of Combustion-Generated NOx in a Utility Furnace Firing Heavy Residual Fuel Oil

[+] Author Affiliations
David H. Wang, Marc A. Cremer, Brad R. Adams

Reaction Engineering International, Salt Lake City, UT

Robert Santangeli

Combustion Components Associates, Monroe, CT

Paper No. PVP2004-3128, pp. 131-137; 7 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Computational Technologies for Fluid/Thermal/Structural/Chemical Systems With Industrial Applications, Volume 2
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4686-5
  • Copyright © 2004 by ASME


Modeling a utility furnace firing heavy residual fuel oil is challenging due to the complex process associated with oil combustion, including droplet spray patterns, droplet heat up and vaporization, gas phase combustion of vaporized oil, enhanced radiative heat transfer due to potentially high soot levels, cenosphere formation and destruction, and NOx chemistry. This paper describes an oil combustion model developed at Reaction Engineering International (REI). The oil combustion model, taking oil spray characterization measurements as inputs, focuses on the aerodynamics and combustion characteristics of oil droplets and NOx chemistry. High soot levels generated from oil flames have been considered for radiative heat transfer. Cenosphere formation and destruction are not modeled since the combustion field, heat release, and NOx chemistry are not significantly influenced by these phenomena. The code has been applied to a 600 MW oil-fired utility boiler and some of modeling results are presented in this paper.

Copyright © 2004 by ASME



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