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
