EESIMIX static
mixer
It is a well known fact that static mixers are an
absolute requirement for crude oil sampling. The same
applies to water cut measurements in large pipes,
irrespective of the technology involved. A small amount
of energy is required to adequately mix oil and water
in a pipeline using conventional shear, reverse flow
and collision to produce a homogeneous mixture of
water droplets and oil droplets downstream of the
mixing element with minimal net pressure drop.
One of the main problems is density
differences between oil and water. This problem manifests
itself in bottom water flowing at the base of the
pipe. Although a inline permittivity measuring device
may measure the complete annulus of liquid in the
spool piece used, slugging, particularly at low flow
rates can cause severe separation of oil and water.
EESIFLO manufactures the range of EESIMIX static
mixers which are normally supplied alongside watercut
meters . We also supply these to manufacturers and
users of crude oil sampling systems. The EESIMIX inline
mixer can be supplied in sizes 1 inch to 48 inches
and in pressure ratings from 150 ANSI to 2500 ANSI.
The mixers can be fabricated in carbon steel, stainless
steel or Duplex. Each unit is factory pressure tested
and weld inspected to conform to international standards.
Each mixer is designed and manufactured to meet the
task required by the application . Mixers used with
automatic crude oil sampling systems can be supplied
with an optional port for sampler insertion.
Key Features
-
Measurement
of water content of crude oil in pipelines
-
Desalting crude oil with water
-
Mixing additives into gasoline or fuel oil
-
Adjusting the viscosity of heavy fuel oil with
gas oil
- Mixing of injected chemicals into pipelines
Fig 1.1 EESIMIX Typical Application
For quotation requests and technical assistance,
please contact your local EESIFLO representative office.
More about EESIMIX static mixers
EESIMIX Static mixers are a row of carefully designed
fixed mixing elements permanently welded within a
pipe . The mixers use the full force of the process
flow stream to enable mixing between two or more fluids.
EESIMIX's design of static mixer creates very little
pressure drop and the greatest amount of mixing .
Our mixers are also used in blending processes as
well as crude oil mixing. Static mixers are also called
"motionless mixers" This is because the
mixing is done by permanently affixed mixing fins,
obstructions, or channels mounted in pipes, designed
for promoting mixing as fluid flows through the mixer.
The criteria for using motionless mixers is to achieve
homogeneity of composition in a liquid without the
need for external process mixing, which can be very
costly and often questionable. When sizing/designing
a static mixer there are two main factors to consider
.The velocity at which a mixer can process materials,
also known as its flow rate, is a rated measurement
based on the volume of product the mixer can process
during given period of time. If the flow rate is known,
it is possible to calculate the number of mixing elements
required to produce a homogeneous mixture. For crude
oil mixing, it is important that a crude oil sampler
or a watercut meter on a bypass is sampling or sensing
representatively. Water and oil do not mix readily
and in a process stream will tend to separate out.
This phenomena worsens as the watercut increases.
Placing a probe in the centre of the pipe to retrieve
a crude oil sample for a sampling system or BS&W
monitor will not give meaningful results without static
mixing. This has been proven time and time again over
the years both in the field and in laboratory simulations.
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10 " crude oil inline
mixer with bypass loop for water cut measurement.
The inline mixer ensures that the watercut
measurements are representative of the flowing
crude oil /water stream |
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For more information log on to http://www.eesimix.com
