Modified atomizer to burn viscous oil

Abstract EN

Numerous experimental trials were carried out in order to investigate the ability of burning viscous oil steadily.

Three combustion air swirlers with vanes angles of 30o, 45o and 60o were manufactured and assembled co-axially with a single-hole externally mixed atomizer.

In order to add spinning motion to the droplets of the spray, three cups were designed with half cone angles of 30o, 45o and 60o and installed, in turn, at the atomizer exit.

Each cup has four passages through which compressed air were discharged from 4 holes drilled tangent to the conical inner surface of the cup.

Consequently, the oil droplets became finer and possessed a strong swirling motion.

Each cup was conjugated to the corresponding combustion air swirler having the same angle and the same streams direction in order to enhance swirling and turbulent effects of the mixture.

As a result ; more-stable flames were successfully attained and gas temperature values along the combustor were increased remarkably.