Providing better fuel flexibility for future gas turbine generations is a challenge as the fuel range is expected to become significantly wider (natural gas, syngas, etc.). The technical problem is to reach a wide operational window, regarding both operational safety and low emissions. In a previous paper, an approach to meet these requirements has already been presented. However, in this previous study it was difficult to exactly quantify the improvement in operational safety due to the fact that the flashback phenomena observed were not fully understood. The present continuative paper is focused on a thorough investigation of operational safety also involving the influence of pressure on flashback and the emissions of the proposed burner concept. To gain better insight into the character of the propagation and to visualize the path of the flame during its upstream motion, tests were done on an atmospheric combustion test rig providing almost complete optical access to the mixing section as well as the flame tube. OH* chemiluminescence, HS-Mie scattering and ionization detectors were applied and undiluted H2 was used as fuel for the detailed analysis. To elaborate on the influence of pressure on the stability behavior, additional tests were conducted on a pressurized test rig using a downscaled burner. OH* chemiluminescence, flashback and lean blow out measurements were conducted in this campaign, using CH4, CH4/H2 mixtures and pure H2. The conducted experiments delivered the assets and drawbacks of the fuel injection strategy, where high axial fuel momentum was used to tune the flow field to achieve better flashback resistance.
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March 2012
Research Papers
Study on the Operational Window of a Swirl Stabilized Syngas Burner Under Atmospheric and High Pressure Conditions
T. Sattelmayer,
T. Sattelmayer
Lehrstuhl für Thermodynamik, TU München, D-85748 Garching,
Germany
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S. Bernero
S. Bernero
Alstom (Switzerland) Ltd., Brown Boveri Strasse 7, 5401 Baden,
Switzerland
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T. Sattelmayer
Lehrstuhl für Thermodynamik, TU München, D-85748 Garching,
Germany
S. Bernero
Alstom (Switzerland) Ltd., Brown Boveri Strasse 7, 5401 Baden,
Switzerland
J. Eng. Gas Turbines Power. Mar 2012, 134(3): 031506 (11 pages)
Published Online: January 3, 2012
Article history
Received:
April 26, 2011
Revised:
April 28, 2011
Online:
January 3, 2012
Published:
January 3, 2012
Citation
Mayer, C., Sangl, J., Sattelmayer, T., Lachaux, T., and Bernero, S. (January 3, 2012). "Study on the Operational Window of a Swirl Stabilized Syngas Burner Under Atmospheric and High Pressure Conditions." ASME. J. Eng. Gas Turbines Power. March 2012; 134(3): 031506. https://doi.org/10.1115/1.4004255
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