There
are many considerations to be taken into account when designing an
enhanced gravity
separation system. The following needs
to be taken into account as a minimum:
-
Inlet flow
distribution
-
Cross
sectional velocities (actual, not nominal)
-
Laminar
flow conditions
-
DynaPac™
Cross Corrugated coalescing media or parallel plate media
"Reynolds" calculations (for quiescent flow distribution)
-
Effluent
flow distribution
-
Total
projected surface area
These
basic design considerations all contribute to the complete
utilization of the separation media. Follow them properly and
the results will be consistent, equal flow distribution through the
separation chamber and the media pack. These are the earmarks
of a thoughtful, wholly engineered, fully developed
multi phase
separator design.
Hydro-Flo strives to be the benchmark by which
all others are judged. By paying total attention to every
detail of the separators design, we can supply you with the finest
multi phase separator available anywhere.
Equipment Criteria:
The separator shall be a specially fabricated
vertical cylindrical pressure vessel. The separation process shall be fully automatic requiring no
moving parts. The design of the separator shall satisfy the
requirements of API PUBLICATION 421, Feb. 1990 on DESIGN & OPERATION
OF OIL/WATER SEPARATORS and Stokes' law. Performance enhancement
shall be achieved by the use of DYNAPAC™ cross corrugated coalescing
media.
Separation Cell:
The separation cell is designed using elements of American Petroleum
Institute's publication 421 Feb. 1990 “Design of Oil-Water
Separators” to ensure the best possible use of particle rise rate
performance. The separation cell is a vertical
cylindrical pressure vessel
manufactured from carbon steel.
- Influent Diffusion Chamber
The flow shall enter the separator, through an
tangentially mounted influent diffusion nozzle. Gas will
enter the chamber and flow upward toward the de-misting filters.
Liquids will be carried along the outer surfaces of the inlet
chamber and merge with the liquid layer around the perimeter of
the separator. Liquids and solids will flow downward into
the separation chamber.
- Separation Chamber
The Separation Chamber shall be fitted with DYNAPAC™ cross
corrugated coalescing media. Adequate space is to be left
before and after the chamber to prevent short circuiting through
the pack. A total of ____ cubic feet of coalescing media is
provided with ½, ¾, or 1-1/4” spacing providing _______ft3 of
coalescing surface area.
- Sludge Collection Chamber
The sludge collection chamber shall be conical in configuration
and located at the bottom of the unit directly beneath
the coalescing media pack and provide ample storage capacity for
the settled sludge. The sides of the chamber shall be sloped at
45 degrees to insure easy and complete removal of the settled
sludge.
- Oil collection chamber
The oil collection chamber shall be located at the upper end of
the separation chamber and incorporate centrally located oil
evacuation connections.
- Effluent Chamber
The aqueous phase leaving the DYNAPAC™ shall pass under
a flow distribution baffle and into the centrally located
effluent plumbing manifold.
- Access Man-way
The separator shall come equipped with a access man-way large
enough for the installation, maintenance and removal of the
internal separation medias.
- Coalescing Media
The coalescing media pack shall be fabricated of oleophilic
cross corrugated coalescing media manufactured by HYDRO-FLO
TECHNOLOGIES.
Control Package (Optional):
All Hydro-Flo Technologies oil/water separation systems are fully automated.
Control packages (depending on your specific requirements) are
available in either basic relay logic controls, or a full state of the art
PLC
with touch screen HMI and our
sophisticated treatment algorithms. The relay logic controls
package allows basic reconfiguration of the original system settings,
while the PLC based package allows maximum flexibility
to change the process parameters, as well as tight control that
minimizes chemical usage. We can include a variety of options
including digital data logging of critical
process parameters, Ethernet access to process data, communication
with Building Management Systems, and even remote system access
using cellular wireless technology.
All enclosures are NEMA 4X. Where metallic
enclosures are used, they are provided with epoxy or polyester
finishes for corrosion resistance. All conduit is plastic coated
where possible. Low voltage 24VDC is used throughout to minimize
service personnel exposure to high voltage. All panels are OSHA LOTO
and NFPA 79 compliant. Additionally UL-508 listing is available.
