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An Output-Based Approach to Emissions Standards for Gas Turbine Facilities

[+] Author Affiliations
Manfred Klein

Environment Canada, Hull, QC, Canada

Rainer Kurz

Solar Turbines Incorporated, San Diego, CA

Paper No. GT2003-38785, pp. 99-106; 8 pages
doi:10.1115/GT2003-38785
From:
  • ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference
  • Volume 4: Turbo Expo 2003
  • Atlanta, Georgia, USA, June 16–19, 2003
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3687-8 | eISBN: 0-7918-3671-1
  • Copyright © 2003 by ASME

abstract

The trend towards more gas turbine power and thermal efficiency, derived through high firing temperatures and air compression ratios, has been translated into increased uncontrolled emissions of NOx . Most of these can be readily reduced by 70–90% with reliable Dry Low Emissions combustion. However, legal and regulatory pressures are requiring NOx emission reductions in the order of 98% in some regions. A key point in these traditional methods is that engine system efficiency and CO2 emissions, as well as other impacts, are not directly considered. More efficient units with higher pressure ratios have difficulty meeting ultra-low ppm concentration based standards, especially under transient conditions. This paper examines the permitting approach on overall plant emissions prevention versus controls, and engine operating parameters for several types of units. This can establish a relationship between the mass quantity of NOx emissions, the engine airflows, and the system operational power output. The intent is to explore whether a different approach to emissions standards would enhance engine system reliability and emission prevention effectiveness for already clean energy facilities.

Copyright © 2003 by ASME

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