ECN publication
Micro gas turbine operation with biomass producer gas
Rabou, L.P.L.M.; Grift, J.M.; Conradie, R.E.; Fransen, S.; Verhoeff, F.
Published by: Publication date:
ECN Biomass, Coal and Environmental Research 27-8-2007
ECN report number: Document type:
ECN-M--07-073 Conference Paper
Number of pages: Full text:
5 Download PDF  

Presented at: 15th European Biomass Conference & Exhibition, Berlin, Germany, 7-11 mei 2007.

We report the performance of a micro gas turbine on biomass producer gas and mixtures of biomass producer gas with natural gas. The micro gas turbine delivers full power on gas mixtures with a heating value of at least 15 MJ/Nm3. For gas of lower heating value, the maximum fuel gas flow limits the attainable power. The lower limit for stable operation is about 8 MJ/Nm3. The gross efficiency of the micro gas turbine depends on output power but not on the gas heating value, within our measurement accuracy. Above 70% of full power, emissions of CO and NO are 40 and 10 times lower than those of a gas engine of similar size. At part load below 70% of full power, the micro gas turbine burner switches to a different operating mode which produces higher CO and NO levels, but still significantly below those of a gas engine.

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