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Images of Flaregas Grade level
and Elevated Staged Matrix Flares
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Flaregas
staged matrix flares are designed to burn very large
quantities of gas smokelessly through-out the entire
operating range.
Smokeless performance is achieved using high pressure, high
turbulence burners, arranged in a matrix so that combustion
air is available to each burner. These flares can be used to
burn a very wide range of gases smokelessly.
This grade level unit has a design capacity of more than
3,000,000 lb/h, all flows completely smokeless. It has about
600 burners, arranged in 7 stages. |
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Smokeless turn-down is
enhanced by staging the flow to the unit. This ensures that the
minimum of burners are in operation at any time, keeping the pressure
in the operational stage high enough to provide sufficient turbulence
so that the flare will be smokeless throughout its entire operating
range.
A typical large matrix flare will have from 6 to 8 stages, using
fast-acting, tight shut-off butterfly valves with rupture disk bypass
to divert gas to each successive stage. |
Matrix flare design requires
that particular attention be made to the layout of the flare to ensure that
sufficient air gets to each burner. The layout can be tailored to the
topography of the location, and the flames can be hidden from sight by berms,
sight fences, or a combination of the two.
These images are of the burners and manifolds during construction,they will
later be covered with a layer of gravel for radiation protection.
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ELEVATED STAGED MATRIX
FLARE SYSTEM
This image shows an elevated staged matrix flare system, installed in
refinery service. A significant benefit of putting the burner matrix
in an elevated structure is that it becomes more compact since
combustion air more easily brought to each of the burners. The plot
area taken up by the system is also much reduced.
Although most matrix flares use
non-assisted burner systems which use the pressure of the waste gas in
specially designed high pressure burners to promote smokeless
combustion, they can also be designed with assisted (steam or air)
burners in cases where the waste gas is only available at low
pressure.
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