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u Pump Protection:
One of the most common flow
disturbances found upstream from pumps in industrial process
plants are 90°
elbows. The inertia of the media, as it propagates through an
elbow and into a pump or compressor, induces swirl and distortion
by forcing the flow to one side. The induced velocity profile
asymmetry created may not only be extreme, but persistent. The
impeller experiences high flows on one side and cavitation on the
other. This can result in severe suction recirculation, excessive
bearing wear, erosion, noise, and increased maintenance cost.
Vortab Elbow™ 90°
elbow flow conditioners eliminate anomalies normally associated
with elbows. The conditioned flow stream enters the pump in a
uniform and equally distributed pattern resulting in increased
bearing life while decreasing noise and cavitation. In addition,
the Vortab Elbow has the ability to isolate and condition out any flow
irregularities that may be introduced upstream from the elbow.
u Combustion
Optimiser: In power
generating facilities, plant engineers are continuously looking
for ways to reduce costs while increasing efficiency.
Optimizing the
combustion in coal-fired power plants can be achieved by utilizing
VORTAB Companies flow conditioning technology. The coal is first pulverized
to a “talcum-powder” consistency. This promotes a cleaner and more
complete burning of the coal. In the plant, the coal fuel may need
to flow through elbows, tees, and other piping components. This
could result in separation areas where the pulverized coal could
accumulate and clump together, resulting in uneven and incomplete
burning of the fuel.
VORTAB®s and
Vortab Elbow flow conditioners can be
used upstream from the burning chamber to cross mix the entire
flow stream, forcing the higher velocity regions to cross mix with
the slower velocity regions. The result is a swirl-free,
repeatable and flat velocity profile. The “flat”
velocity profile equally distributes the
homogenized fuel mixture into the burning chamber. The result is a
more even and complete combustion of the fuel.
To combat the
effects of abrasive medias flowing over the profile correcting
internals, abrasive resistant steels or ceramic coatings are
available.
u Temperature
Stratification: In the
process industry, temperature stratification may occur in low flow
velocity regimes where mixtures of components may vary in density.
Other contributions can lead to temperature stratification.
Control of temperature can have a direct effect on the efficiency
of process plants.
Vortab flow
conditioners eliminate anomalies associated with stratification by
completely conditioning and homogenizing the entire flow stream.
The turbulence
generated by the patented vortice generating profile conditioning
tabs eliminate stratification and results in an evenly
distributed, repeatable, and symmetric velocity profile. Ideal
flow scenarios for process instrumentation.
u Composition
Homogenizer: Maintaining a
uniform structure or composition throughout a process can be
achieved by using VORTAB and Vortab Elbow flow conditioners.
Inconsistent
compositions, as they propagate downstream, can adversely affect
densitometers, sampling instrumentation, and flow metering
technologies such as Ultrasonic and Magnetic flowmeters.
The turbulence
generated by the profile conditioning tabs force the slower and
higher velocity flow streams to cross mix throughout the flow
conditioning process.
The ability to condition out variations in composition can provide a
better sample of the media’s constituents.
u Critical Process
Equipment: In Industrial
installations, process plants are designed to minimize floor
space. Abbreviated floor space can result in inadequate short runs
of straight pipe required upstream from pumps, flowmeters, and
other critical components used in the process industries.
Inadequate lengths of upstream piping, valves, compressors, spiral
welded pipe, expansions, reductions, and elbows alter the media’s
tangential, radial, and axial velocity vectors. These alterations
generate swirl, jetting, and velocity profile distortions.
Poor piping practices increase
flowmeter error, often outside of the specified performance limits
of the flowmeter manufacturer. Flow disturbances can induce
cavitation and noise in pumps, control valves and other critical
process components resulting in excessive wear and damage. Flow
disturbances can be reduced or eliminated by the installation of
VORTAB and Vortab Elbow 90°
Elbow Flow Conditioners.
VORTAB and
Vortab Elbow
flow conditioners have a low-pressure drop and can be used in
separated flows and thus are able to operate with very minimal
upstream piping. In addition, uneven particulate distributions or
temperature stratification are made more uniform through this
process. The tapered design of the swirl and profile tabs
eliminate fouling and clogging.Accumulation on the
backsides of the profile conditioning tabs is avoided due to the
constant vacuum effect created by a pressure differential between
the upstream and downstream sides of the tabs.
The Vortab Elbow’s ability to isolate flow
disturbances, reduce swirl, and develop a repeatable flow profile
with minimal pressure loss make it ideal for increasing the life
of pumps, control valves, flow meters and other critical process
equipment.
u Recovery
Repeatable Flow Profiles:
VORTAB and
Vortab Elbow flow conditioners isolate flow irregularities and
create a swirl-free, repeatable, and symmetric velocity profile
regardless of upstream flow disturbances.
Swirl
reduction and velocity profile correction occur naturally in long
lengths of straight pipe due to diffusion and turbulent mixing.
VORTAB Companies “Tab-Type” vortex generating internals accelerate and
amplify these natural pipe effects.
In addition,
the shape of the velocity profile does not change with varying
flow rates. |