Ignition improvement by injector arrangement in a multi-fuel combustor for micro gas turbine

8th TSME-International Conference on Mechanical Engineering

Antoshkiv, O.^1 ; Poojitganont, T.^1 ; Jeansirisomboon, S.^2 ; Berg, H.P.^1

BTU Cottbus - Senftenberg, Siemens-Halske-Ring 14, Cottbus

03046, Germany^1

Gulf Group Company, 67 Wireless Road, Bangkok

10330, Thailand^2

关键词: Combustor designs;    Flame propagation;    High-efficiency;    Ignition process;    Large amounts;    Micro gas turbines;    Radial position;    System improvements;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/297/1/012006/pdf
DOI  :  10.1088/1757-899X/297/1/012006

来源: IOP

【 摘 要 】

The novel combustor design also has an impact on the ignitor arrangement. The conventional ignitor system cannot guarantee optimal ignition performance in the usual radial position. The difficult ignitability of gaseous fuels was the main challenge for the ignitor system improvement. One way to improve the ignition performance significantly is a torch ignitor system in which the gaseous fuel is directly mixed with a large amount of the combustor air. To reach this goal, the ignition process was investigated in detail. The micro gas turbine (MGT) ignition was optimised considering three main procedures: torch ignitor operation, burner ignition and flame propagation between the neighbour injectors. A successful final result of the chain of ignition procedures depends on multiple aspects of the combustor design. Performed development work shows an important step towards designing modern high-efficiency low-emission combustors.