Development of an Aeroderivative Gas Turbine Dry Low Emissions Combustion System

Abstract

This paper gives the development status of GE’s new aeroderivative premixed combustion system. This system consists of a new fuel staged annular combustor, compressor rear frame, first stage turbine nozzle, electronic staging controller, and fuel delivery system. Component test results along with a description of the combustion system are presented. This new system will reduce NOx emissions by 90% relative to the original aircraft engine combustion system while maintaining low emissions of CO and UHCs. Tests of a LM6000 gas turbine equipped with the new system are planned for early 1994.

Computational study of NOx formation in hydrogen-fuelled pulse detonation engines

“…The increase is, however, much smaller for very lean or very rich mixtures, for which the rate of formation of NO is so small that NO emission levels become fairly insensitive to the residence time. The insensitivity of NOx formation to residence time in lean premixed combustion has also been observed by Anderson [22], Leonard and Stegmaier [23] and Rizk and Mongia [24].…”

Dynamics and stability of lean-premixed swirl-stabilized combustion

“…The major differences in design between lean-premixed and conventional diffusion-flame type combustion systems may be illustrated by considering the General Electric (GE) aero-derivative LM6000 combustor [21][22][23]. Fig.…”

Fuel flexibility, stability and emissions in premixed hydrogen-rich gas turbine combustion: Technology, fundamentals, and numerical simulations

“…Second, a change in fuel composition leads to a change in the volumetric heating value of the mixture and in order to maintain the same power output from the system (if desired), it is necessary to change the fuel flow rate. This is usually achieved by changing the velocity of the fuel jet into the air stream and could lead to a change in the mixing profile, which in turn affects NO emissions [127]. The fuel-air non-uniform mixing tend to increase NO x emissions as shown in Fig.…”