The FAB series flare is used for smokeless combustion applications, where the use of steam is not desired or available.
Smokeless combustion can be obtained even with heavy unsaturated hydrocarbon gases. There are two modes of air supply; the first is a co-axial supply of air with the main gas riser centrally positioned. The second is an outside separate air riser alongside the main gas riser. The gas is distributed in the tip to a series of vanes with characterized slots for even gas spread into the air stream.
The air is directed from the tip with a swirling action at high velocity and, with the even gas spread and turbulent air mixing at the tip outlet, efficient combustion is achieved. Secondary air is entrained by the turbulent discharge from the tip.
The swirling action of the flame produces a well formed flame with low luminosity, unaffected by wind and producing minimum downward radiation. This is achieved by supplying up to 50% of stoichiometric air from the low pressure fan.
Full capacity can be flared smokelessly with only part of the combustion air supplied by a fan at low pressure. The fan speed can be staged so that efficient use of electrical power is achieved. The fan speed can also be automatically controlled. As a result, efficient combustion is achieved without the use of expensive steam and with minimum noise, producing a flame of low luminosity which does not disturb the environment.