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Leveraging Physical and Computational Flow Modeling Techniques in the Optimization of Commercial Selective Catalytic Reduction System Designs

[+] Author Affiliations
David K. Anderson, Martin J. Kozlak

Alstom Power, Inc., Windsor, CT

Paper No. IJPGC2002-26145, pp. 797-804; 8 pages
doi:10.1115/IJPGC2002-26145
From:
  • 2002 International Joint Power Generation Conference
  • 2002 International Joint Power Generation Conference
  • Scottsdale, Arizona, USA, June 24–26, 2002
  • Conference Sponsors: Power Division
  • ISBN: 0-7918-3617-7 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

To ensure optimal SCR system performance, physical and computational flow models of proposed SCR installations are used to guide the development of system components, such as the ammonia injection grid and various flow and thermal conditioning devices. Proper attention to these details is particularly important in retrofit applications where the ducts leading to the SCR reactor often cannot be designed for optimal fluid flow characteristics. This paper discusses the process of SCR modeling including the techniques employed to accurately model gas flow, NOx, ammonia, and thermal distributions and mixing. Additionally, the development of economizer bypass systems for SCR temperature control during low-load operation is discussed.

Copyright © 2002 by ASME

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