Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Influence of Correlation between OEC and Acoustic Excitation in Natural Gas Flames
Submission Author:
Alex Álisson Bandeira Santos , BA , Brazil
Co-Authors:
Astério Ricardo Barros Pereira , Lucas Silva, Alex Álisson Bandeira Santos
Presenter: Alex Álisson Bandeira Santos
doi://10.26678/ABCM.COBEM2017.COB17-0428
Abstract
The use of combustion in industrial and human activities is of paramount importance for economic and social development. Even with the promotion of energy alternatives to reduce the use of combustion, this will be a mechanism for the generation of energy still widely used, either by the use of natural gas as a less polluting fuel, but also by the use of synthesis gases of biomass gasification. However, combustion reactions are the main sources of emission of atmospheric pollutants, such as CO, NOx, volatile organic compounds and particulate matter. In view of this reality, it is necessary to study new techniques as well as the correlation between them in order to bring greater sustainability to combustion. The objective of the work is to correlate techniques such as oxygen-enhanced combustion (OEC) and the acoustic excitation of flames, forced by an external source, evaluating the effect of the use of these coupled techniques on the atmospheric emissions and thermal efficiency of the combustion in diffused and confined flames of natural gas. For this, an experimental prototype was developed with systems of acoustic performance and enrichment of the oxidant with oxygen. In the work is also presented experimental planning to identify the operational condition that optimizes together the emission levels of pollutants as well as the temperature of the exhaust gases in the flames studied. The results showed that the optimum operating point of the experimental device used is the simultaneous use of the two combustion techniques, which indicates the viability of the coupling between them. An increase in the stability of the flame acoustically excited with the use of OEC was also observed.
Keywords
OEC, pulsed combustion, acoustic excitation, natural gas flames
