PGE/REWE 2015

Lowering Emissions and Lessening the Carbon Footprint: GE Combustion Technology Leadership for Improved Performance and Economics (Room G102-G103, Auditorium Centre, First Floor)

Gas turbines are used extensively throughout the world to provide electricity and to power industrial processes. Through advances in combustion technology, gas turbines have evolved from E- class to the highly efficient F- and H-class machines. The majority of these turbines operate on natural gas because of its availability and reliability. However, a combination of recent factors, including volatility in fuel supply and pricing, global concerns about carbon emissions, and excess risk from heavy reliance on a single energy source, have made alternatives to natural gas, such as syngas, liquid hydrocarbons and industrial opportunity fuel sources very attractive. Nevertheless, a major factor in the utilization of opportunity fuels remains in the ability of gas turbines to operate reliably and efficiently on such fuels in baseload, part load or peaking scenarios in simple cycle, combined cycle and cogeneration. GE’s installed fleet of heavy-duty gas turbines, which have accumulated more than 143 million fired hours, provide a framework for continued evolution of proven DLN1/1+ and DLN2.6+ combustion systems and the associated fuel accessory systems. Combustion system development programs focus on operational and fuel flexibility options that help customers utilize a wide variety of available fuels economically while continuing to meet cleaner emission standards. This paper will focus on gas turbine combustion technology advancements that have enabled use of a wide range of fuels outside of the traditional natural gas parameters. Real world case studies will highlight improved opearational characteristics and benefits, as well as clarifying how these DLN learnings and innovations can be readily applied to new units and upgrades for installed units.