Facet's CTS Series Coalescing Plate Separators are designed
to handle either gravity or pumped flow on a single-pass or recirculatory
basis. The separator vessel is constructed of carbon steel (in
a single or double wall construction), provided with a corrosion resistant
coating externally, optional corrosion resistant coating internally,
and a cathodic protection system. The CTS consists of a pre-separation
chamber with inlet diffuser; a plate inlet chamber directly
upstream of the plates; an MPakŪ coalescing plate section;
an outlet oil overflow weir and oil storage compartment; a transfer
pipe and clean water effluent chamber; and a clean effluent water
pipe outlet. Separated solids fall to the bottom of the cylindrically
shaped vessel and the separated oil rises to the top of the vessel.
CTS units are designed to have various quantities of MPaks in
each unit depending upon the application. This versatility ensures
the separators are cost effective. Facet sales engineers determine
the optimal unit for each application using Facet's proprietary computer-sizing
program.
The oil water enters the inlet chamber through the inlet piping and
diffuser. The energy of the incoming fluid is dissipated here
and the flow is directed toward the MPaksŪ. Oily water
is evenly distributed across the face of the plate packs.
Solids particles entering the oil/water separators have been problematic
for many years. The Facet MPak separator is designed
to provide optimum oil removal and to be self-cleaning so as to avoid
problems caused by the accumulation of solid particles in the system.Many
of the larger solid particles entering the system will settle to the
floor of the unit in the inlet chamber because the liquid velocity
in the separator is much less than the inlet pipe.Smaller solid particles
that enter the plate pack are separated in much the same way as the
oil, but being denser than water, they fall to the bottom of the separator.
The solids slide down the upper surfaces of the plates in much the
same way as the oil migrates up the undersides of the plates.
Exit holes have been provided in the valleys of the plates to allow
these particles to exit the system. |
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MPak Coalescing Plate
Section
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Oil droplets entering the plates are of various sizes. As the
mixture flows through the plates, the oil droplets rise in the water,
coming into contact with the undersides of the plates and coalescing
to form a thin film of oil. This film flows upward, along the
angled plate's surfaces, until it reaches the oil ports where it exits
the top of the separator forming a thin layer over the surface of
the water. Eventually the oil reaches the top of the separator.
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Outlet Oil Overflow
Weir & Oil Storage Compartment
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Oil that is separated in the MPak section accumulates in a
film ( of varying thickness) along the top of the liquid level in
the separator. This oil flows over the oil overflow weir and
is accumulated in the oil storage compartment. This accumulated
oil can be removed from the unit by a vacuum truck or an optional
oil pump out system.
Clean water is removed from the bottom of the separation section and
transferred to the clean effluent water compartment via the water
transfer pipe. This piping assembly sets the liquid levels throughout
the unit and allows accumulations of oil in the separator section
to be skimmed into the oil compartment when the flow rates resume
near design rates.
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Clean Water Effluent
Chamber & Clean Effluent Water Pipe Outlet
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Clean, processed water is discharged via this chamber into the customer's
downstream piping system. The combination of the transfer pipe
and the effluent piping precludes the possibility of oil entering
the effluent system. The effluent chamber may be used for sampling.
However, a sample port in the effluent piping is recommended for this
purpose. |
