Fuel flexibility of a multi-staged prototype gas turbine burner

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Sammanfattning

Gas turbines are widely used power generation equipment and very important for its efficiency and flexible operability. With the increasing demand of low carbon or less greenhouse gas emission from gas turbine, usage of clean fuel (i.e. hydrogen) is highly recommended. Adaptation with various type of fuels without any operability issues are the primary focus of interest while design and development of a low NOx gas turbine combustion system. Due to chemical and physical property variation of different fuel, a common combustion system design is complex and require extensive testing. The present paper is focused on fuel flexibility of an industrial prototype burner, designed and manufactured by Siemens Industrial Turbomachinery AB, Sweden. In this work, a baseline case (Methane fuel) is compared with different custom fuel blends (mixture of methane with natural gas and hydrogen). The primary and secondary combustion characteristics were modified when hydrogen blended fuels were introduced. The Lean Blowout limit was extended for the primary and secondary flames. The secondary flame macro structure was captured using Planar Laser Induced Fluorescence and natural luminosity imaging; whereas primary flame location was characterized by the thermocouple readings. Operational stability map and emission (NOx and CO) capability of the burner was determined from the experiment. Numerical calculation using ANSYS FLUENT was performed to simulate the combustion process and compare the results with experiment. The experimental and simulation effort provided information about the flame macrostructure and operability (lean operability limit was extended by 100 K) of the new technology burner when the combustion system was exposed to different type of fuels.

Originalspråkengelska
Titel på värdpublikationASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
Undertitel på värdpublikationVolume 4B: Combustion, Fuels and Emissions
FörlagAmerican Society Of Mechanical Engineers (ASME)
Antal sidor15
VolymPart F130041-4B
ISBN (elektroniskt)9780791850855
DOI
StatusPublished - 2017
EvenemangASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017 - Charlotte, USA
Varaktighet: 2017 juni 262017 juni 30

Konferens

KonferensASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, GT 2017
Land/TerritoriumUSA
OrtCharlotte
Period2017/06/262017/06/30

Ämnesklassifikation (UKÄ)

  • Energiteknik

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