Technical Briefs

Extension of Fuel Flexibility in the Siemens Dry Low Emissions SGT-300-1S to Cover a Wobbe Index Range of 15 to 49 MJ/Sm3

[+] Author and Article Information
Kexin Liu

e-mail: kexin.liu@siemens.com

Ghenadie Bulat

Siemens Industrial Turbomachinery Limited,
Lincoln, LN5 7FD, United Kingdom

1Corresponding author.

Contributed by the Combustion and Fuels Committee for publication in the Journal of Engineering for Gas Turbines and Power. Manuscript received June 18, 2012; final manuscript received August 16, 2012; published online January 8, 2013. Editor: Dilip R. Ballal.

J. Eng. Gas Turbines Power 135(2), 024502 (Jan 08, 2013) (5 pages) Paper No: GTP-12-1160; doi: 10.1115/1.4007730 History: Received June 18, 2012; Revised August 16, 2012

The extension of gas fuel flexibility in the Siemens SGT-300 single shaft (SGT-300-1S) is reported. A successful development program has increased the capability of the Siemens Industrial Turbomachinery, Lincoln (SITL) dry low emissions (DLE) burner configuration to a fuel range covering a Wobbe index (WI) from 15 to 49 MJ/Sm3. The WI reported in this paper is at a 15 °C fuel temperature. The standard SGT-300-1S SITL DLE combustion hardware allows for gas and liquid fuels within a specified range typically associated with natural gas and diesel, respectively. The range of the WI associated with natural gas is 37–49 MJ/Sm3. Field operation of the standard production SGT-300-1S has confirmed the reliable operation with an extension to the fuels range to include processed landfill gas (PLG) from 30 to 49 MJ/Sm3. The further extension of the fuel range for the SGT-300-1S SITL DLE combustion system was achieved through high pressure testing of a single combustion system at engine operating conditions and representative fuels. The variations in the fuel heating value were achieved by blending natural gas with diluent CO2 and/or N2. Various diagnostics were used to assess the performance of the combustion system, including the measurement of combustion dynamics, temperature, fuel supply pressure, and the emissions of NOx, CO, and unburned hydrocarbons (UHCs). The results of the testing showed that the standard production burner can operate for a fuel with a WI as low as 23 MJ/Sm3, which corresponds to 35% CO2 (by volume) in the fuel. This range can be extended to 15 MJ/Sm3 (54.5% CO2 in the fuel) with only minor modification to control losses through the burner and to maintain similar fuel injection characteristics. The SITL DLE combustion system is able to cover a WI range of 15 to 49 MJ/Sm3 in two configurations. The results of testing showed a lowering in the WI, by diluting with CO2 and/or N2, so that a benefit in the NOx reduction is observed. This decrease in the WI may lead to an increased requirement of the fuel supply pressure.

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Bulat, G., Liu, K., Brickwood, G., Sanderson, V., and Igoe, B., 2011, “Intelligent Operation of Siemens (SGT-300) DLE Gas Turbine Combustion System Over an Extended Fuel Range With Low Emissions,” ASME Paper No. GT2011-46103, pp. 917–925. [CrossRef]
Kowkabie, M., Noden, R., and De Pietro, S., 1997, “The Development of a Dry Low NOx Combustion System for the EGT Typhoon,” ASME Paper No. 97-GT-60.
Liu, K., Wood, J. P., Buchanan, E., Martin, P., and Sanderson, V. E., 2010, “Biodiesel as an Alternative Fuel in Siemens Dry Low Emissions Combustors: Atmospheric and High Pressure Rig Testing,” ASME J. Eng. Gas Turbines Power132, p. 011501. [CrossRef]
University of New Hampshire, 2012, “UNH Cogeneration Facility,” http://www.energy.unh.edu/cogen.html
Ren, J. Y., Egolfopoulos, F. N., Mak, H., and Tsotsis, T. T., 2002, “NOx Emission Control of Lean Methane-Air Combustion With Addition of Methane Reforming Products,” Combust. Sci. Technol., 174, pp. 181–205. [CrossRef]
Lafay, Y., Renou, B., Cabot, G., and Boukhalfa, M., 2007, “Experimental Determination of Laminar Flame Thickness for CO2 and H2 Diluted Methane/Air Flames,” Proceedings of the 3rd European Combustion Meeting, Chania, Crete, April 11–13.
Cohe, C., Chauveau, C., and Gokalp, I., 2009, “CO2 Addition Effect in High Pressure CH4-Air Turbulent Premixed Flames,” Proc. Combust. Inst., 32, pp. 1803–1810. [CrossRef]
Ren, J. Y., Qin, W., Egolfopoulos, F. N., Mak, H., and Tsotsis, T. T., 2001, “Methane Reforming and Its Potential Effect on the Efficiency and Pollutant Emissions of Lean Methane-Air Combustion,” Chem. Eng. Sci., 56, pp. 1541–1549. [CrossRef]
Qin, Q., Egolfopoulos, F. N., and Tsotsis, T. T., 2001, “Fundamental and Environmental Aspects of Landfill Gas Utilization for Power Generation,” Chem. Eng. Sci., 82, pp. 157–172. [CrossRef]
Kishore, V. R., Duan, N., Ravi, M. R., and Ray, A., 2008, “Measurement of Adiabatic Burning Velocity in Natural Gas Like Mixtures,” Exp. Therm. Fluid Sci., 33, pp. 10–16. [CrossRef]
Liu, F., Guo, H., and Smallwood, G., 2003, “The Chemical Effect of CO2 Replacement of N2 in Air on the Burning Velocity of CH4 and H2 Premixed Flames,” Combust. Flame, 133, pp. 495–497. [CrossRef]
Glarborg, P., and Bentzen, L. L. B., 2008, “Chemical Effects of a High CO2 Concentration in Oxy-Fuel Combustion of Methane,” Energy Fuels, 22, pp. 291–296. [CrossRef]
Fackler, K. B., Karalus, M. F., Novosselov, I. V., Kramlich, J. C., and Malte, P. C., 2011, “Experimental and Numerical Study of NOx Formation From the Lean Premixed Combustion of CH4 Mixed With CO2 and N2,” ASME Paper No. GT2011-45090. [CrossRef]
Dobbeling, K., Meeuwissen, T., Zajadatz, M., and Flohr, P., 2008, “Fuel Flexibility of the Alstom GT132E Medium Sized Gas Turbine,” ASME Paper No. GT2008-50950. [CrossRef]
Liu, K., Alexander, V., Sanderson, V., and Bulat, G., 2012, “Extension of Fuel Flexibility in the Siemens Dry Low Emissions SGT-300-1S to Cover a Wobbe Index Range of 15–49 MJ/Sm3,” ASME Paper No. GT2012-68838.
Elkady, A. M., Brand, A. R., Vandervort, C. L., and Evulet, A. T., 2011, “Exhaust Gas Recirculation Performance in Dry Low Emissions Combustors,” ASME Paper No. GT2011-46482. [CrossRef]
Thiruchengode, M., Nair, S., Prakash, S., Scarborough, D., Neumeier, Y., Lieuwen, T., Jagoda, J., Seitzman, J., and Zinn, B., 2003, “An Active Control System for LBO Margin Reduction in Turbine Engines,” Proceedings of the 41st Aerospace Sciences Meeting and Exhibit, Reno, NV, January 6–9, AIAA Paper No. 2003-1008.
Asti, A., Stewart, J. F., Forte, A., Yilmaz, E., and D'Ercole, M., 2008, “Enlarging the Fuel Flexibility Boundaries: Theoretical and Experimental Application to a New Heavy-Duty Gas Turbine (MS5002E),” ASME Paper No. GT2008-50773. [CrossRef]
Cocchi, S., Provenzale, M., and Ceccherini, G., 2007, “Fuel Flexibility Test Campaign on a 10 MW Class Gas Turbine Equipped With a Dry-Low-NOx Combustion System,” ASME Paper No. GT2007-27154. [CrossRef]
Lafay, Y., Cabot, G., and Boukhalfa, A., 2006, “Experimental Study of Biogas Combustion Using a Gas Turbine Configuration,” 13th International Symposium on the Application of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, June 26–29.
Rokke, P. E., and Hustad, J. E., 2005, “Exhaust Gas Recirculation in Gas Turbines for Reduction of CO2 Emissions: Combustion Testing With Focus on Stability and Emissions,” Int. J. Thermodyn., 8, pp. 167–173, available at: http://www.doaj.org/doaj?func=openurl&genre=journal&issn=13019724&volume=8&issue=4&date=2005&uiLanguage=en
Liu, K., and Sanderson, V., 2012, “The Influence of Changes in Fuel Calorific Value to Combustion Performance for Siemens SGT-300 Dry Low Emission Combustion System,” J. Fuel (in press). [CrossRef]


Grahic Jump Location
Fig. 1

Standard SGT-300-1S engine continuous operation with trifuel flexibility at UNH, showing smooth and stable transient operation with fuel change over

Grahic Jump Location
Fig. 2

Standard burner test results: emissions and main fuel supply pressure

Grahic Jump Location
Fig. 3

Standard burner test results: burner temperature and combustion dynamics

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Fig. 4

Modified burner test results

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Fig. 5

Summary results: effect of CO2 addition in the fuel on the emissions and burner metal temperature



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