NDLI: Integrating the Staged Prevaporizer-Premixer Into Gas Turbine Cycles

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Campbell, J. S. Malte, P. C. Kops, S. De Bruyn Novosselov, I. John, C. Y. Lee Benjamin, M. A.
Copyright Year	2002
Abstract	This paper describes a cycle analysis study on the use of the staged prevaporizer-premixer injector (SPP) in high-pressure gas turbine systems fired with liquid fuel. A review of the SPP is given, including discussions of its operational concepts and previous research. The main portions of the paper consist of analyzing the use of the SPP in three different gas turbine systems: a steam-injected gas turbine (STIG) engine, a Frame H gas turbine in combined cycle, and a reheat gas turbine in combined cycle. Focus is placed on determining the effect of the SPP on cycle efficiency. In addition, SPP use in an engine conventionally recuperated by heat exchange from the exhaust gas stream to the compressor discharge air is examined. The SPP offers the potential of low NOx emissions for liquid-fired gas turbines. Because water injection is a method currently practiced for the reduction of NOx, simulations of engines without the SPP but with water injection into the combustor are also performed and comparisons are made. The simulation process is described, as are methods of how the SPP is implemented into the various engines. Results of the study are given, showing the effect of SPP use on cycle efficiency. In general, except for application to the conventionally recuperated engine, use of the SPP causes a decrease in cycle efficiency of around 1–3 percent (relative). The impact of water injection is somewhat greater, causing a 2.5–4 percent (relative) decrease in cycle efficiency. Further, the water injection does not provide as much NOx control as the lean prevaporized-premixed combustion.
Sponsorship	International Gas Turbine Institute
Starting Page	459
Ending Page	468
Page Count	10
File Format	PDF
ISBN	0791836061
DOI	10.1115/GT2002-30081
e-ISBN	0791836010
Volume Number	Volume 1: Turbo Expo 2002
Conference Proceedings	ASME Turbo Expo 2002: Power for Land, Sea, and Air
Language	English
Publisher Date	2002-06-03
Publisher Place	Amsterdam, The Netherlands
Access Restriction	Subscribed
Subject Keyword	Cycles Combined cycles Combustion Compressors Fuels Engines Emissions Exhaust systems High pressure (physics) Heat Gas turbines Simulation Ejectors Steam Nitrogen oxides Underground injection Combustion chambers
Content Type	Text
Resource Type	Article

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