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2017GMC Paper

Gas Turbines: Emissions, Combustion and Fuels

Tim Lieuwen; Benjamin Emerson; Christopher Perullo - Turbine Logic

Reciprocating Compressors

Pipeline natural gas, while dominantly composed of methane, also contains various amounts of diluents, hydrogen, and hydrocarbons. The objective of this paper is to describe how variations in fuel composition influence gas turbine emissions, operability, and operational range (turndown). A key finding is that these fuel composition sensitivities are not described by a single parameter, such as Wobbe index, but by different parameters depending upon the specific issue. For example, the autoignition time is an important parameter influencing autoignition risk, while flame speed has important influences on combustion instability and blowoff risk.

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Gmc Paper