EnviroPro Combustion & Waste Heat Recovery Solutions
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BREAKING NEWS: Callidus Technologies Releases New Ground Flare Tip      

November 2016 - Callidus technologies released a new multi-point ground flare tip design which will allow for increased smokeless capabilities, enhanced crosslighting, and shorter flame height.

Increased Smokeless Cabilities
During flare activation, pressure in the ground flare manafold will increase causing your pressure valves to open and begin opening stages accordingly. Every time a stage is opened, your total pressure drop will be decreased. The Callidus ground flare is designed to remain 100% smokless during this change in pressure drop. The Callidus Galaxy tip burner produces essentially no visibal smoke for any of the vent gas compositions tested.

Enhanced Crosslighting
A typical multipoint flare stage may have between five and 50 burners attached to a single pipe manifold . When a stage is placed in service, a continuously burning pilot ignites a flare burner. The flame then propagates or cross-lights the row of burners comprising a stage. If there is a delay in the lighting of the burners, a higher volume of combustible vent gas will accumulate near the burner heads before ignition occurs, potential ly resulting in an audible pressure wave during the ignition event.
To reduce the ignition delay between flare burner heads, cross-lighting ports can be used to direct ignited vent gas to the adjacent flare burner head. For vent gas with a large inert mixture component or low flame speed, the size of the ports required for cross-lighting may disturb the air ingress and mixing between the flare burner heads under full load, which could cause flames to rise above the radiation fence.
Additionally, a large portion of the heat may be released directly adjacent to the burner heads, reducing their life either through direct heating or coke production from the heated vent gas inside the burner heads.

Shorter Flame Height
One of the basic design tenets of a mult ipoint flare fie ld is a reduction in the flame length from the entire vent gas flow. This produces a more manageable flame size by exhausting the vent flow through many smaller flames, as opposed to one large flame. Breaking a single jet into multiple jets increases the mixing rate of t he vent gas with the surrounding air, resulting in smaller jet dissipation length.
In the case of injection of multiple jets, it has been established that the flow from the jets will merge. If the flows from each individual burner merge before combustion is complete, the zone where the flows touch becomes starved for air and the flames become longer. For this reason, the flames from multiple burners will be longer than the flame from a single burner.
The Galaxy flare burner has a unique patent-pending feature that alleviates elongated flames in multiple burner installations. An asymmetrical gas injection pattern ensures that, where the flames must touch for smooth and efficient cross-light ing, ultimate flame length does not become longer than that of a single burner flame. This feature has been tested in multiple burner physical testing, and then extensively evaluated using computational fluid dynamics (CFD).

For more information, especially regarding applications for your facility, please contact EnviroPro.


Technical Resources

Jack HornsbyJack Hornsby, Jr., PE
Main: 281-236-5029

Austin HornsbyAustin Hornsby
Main: 832-526-9333

Jarrett HornsbyJarrett Hornsby, EIT
Main: 210-900-0088

Julie HornsbyJulie Hornsby
Main: 281-236-5029