Low NO_x emission of rich-burn, quick-mix, lean-burn trapped vortex combustor

This paper used an alternative combustion approach to achieve low NO_x, CO emissions. This approach combines the potential advantages of a staged rich-burn, quick-mix, lean-burn (RQL) combustor with the revolutionary Trapped Vortex Combustor (TVC) concept. A Testo360 gas analyzer was used to study both the combustor' s exit temperature and NO_x, CO emissions. The experimental results conducted at different excess air ratio of rich-zone, main air flow and after-body injection velocity. The fuel used was liquefied petroleum gas. The experimental results demonstrated that NO_x emissions for RQL trapped vortex combustor was NO_x emissions reduced by 50% when CO emissions maintain the same low level compared with conventional axially-staged RQL and perforated plates combustor.