REDUCTION OF NO BY ACETYLENE SOOT
Sustainable process-product development & green chemistry
Sustainable & Clean Technologies - III: Combustion & Emission (T1-6P)
Keywords: NO, acetylene pyrolysis, soot
Soot formation is observed in high temperature fuel rich areas in many combustion devices. To avoid possible fouling problems, soot particles should be eliminated before exiting the combustion equipment. On the other hand, the removal of NOx from the exhausts of various combustion sources is increasing its interest because of NOx environmental impact. Much effort has been made to develop highly effective technologies for NOx removal as legal emission values also become more restrictive.
Soot elimination could proceed through the interaction of these particles with the gaseous atmosphere which surrounds them. One of the possibilities is their interaction with NO within the combustion chamber. The study of this interaction conditions could result in a synergistic effect for the reduction of both NO and soot.
With the aim of exploring the soot-NO interaction, two different soots were produced from acetylene pyrolysis at 1100ºC using different initial acetylene concentrations. At 1100ºC, experiments of interaction soot-NO were performed using a wide range of NO concentrations (300-3000 ppm). Results show the reactivity of both materials to NO, although there are also relevant differences in their behaviour, maybe caused by their different structural characteristics. The presence of oxygen in the soot-NO interaction also showed an increase in NO reduction. A further analysis of these data may contribute to optimize operating conditions in combustion devices as well as to minimize soot emissions.
Presented Monday 17, 13:30 to 15:00, in session Sustainable & Clean Technologies - III: Combustion & Emission (T1-6P).
