Water Solutions

CYCLOSEP™ Vertical Flotation System

The CYCLOSEP™ vertical flotation system by Siemens Water Solutions represents a new concept in treating produced water and contaminated wastewater by using specialized cyclonic and flotation technology that removes oil, grease and solids in a single vessel arrangement. State-of-the-art cyclonic technology installed in our vertical vessel removes solids without interrupting the processing of produced water. The internal design features a cyclonic device that is not susceptible to plugging or short-circuiting due to solids. The CYCLOSEP™ flotation system can be designed as an ASME code pressurized or atmospheric vessel.

Applications ¡ Offshore and onshore produced water containing high concentrations of Total Suspended Solids (TSS)

¡ Refinery wastewater treatment

¡ Removal of pulp from wastewater in the paper industry

¡ Treatment of oily wastewater containing solids

Flotation Process As the influent stream enters the CYCLOSEP™ vessel it flows through an optional SPIRALSEP™ unit installed in the inlet piping to the vessel. This component initiates gravity separation of the oil from the incoming fluid by centrifugal forces around a center core. Fluid enters the vessel tangentially from the SPIRALSEP™ system to the internal cyclone device, forcing the mixture downward to the bottom of the cyclone. The free oil and gas flow reverses to travel upward through the center of the cyclone device to exit out the top above the liquid level.

The water then flows upward and skims over the sand hopper compartment where it is introduced to the gas flotation zone and continues its downward flow through the optional coalescing packing. The coalesced oil as well

as the oil coated gas bubbles are floated to the surface where they are skimmed for removal.

The water level is self-regulating and independent of changes in effluent flow. Reclaimed oil is skimmed and sent to the operator’s wet oil tank or equivalent. This is accomplished by use of a level control switch that actuates a level control device.

Flotation gas bubbles are generated by a number of different methods including DGF, eductor and sparge tubes. Our Brise™ DGF pump uses a patented pump system to create micro fine gas bubbles. This system uses a dual-sided impeller that pulls both water and gas into the pump where it is mixed, and fine bubbles are discharged at an accelerated rate. The DGF technology allows for instantaneous adjustments

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in bubble size resulting in greater adaptability to changing water chemistry characteristics, thus resulting in chemical cost savings as high as 50%.

As an added feature, we have designed a CYCLOSEP™ system specific to applications which experience extreme movement such as floating platforms (Spar, TLP, FPSO). Extreme movements in these applications result in potential violent environments within the vessel causing high water/oil skim ratios. The design incorporates a “head-in-head” arrangement that:

1. Reduces turbulence within the vessel.

2. Reduces the water/oil skim ratio.

3. Maximizes oil removal efficiency.

Design Options ¡ Pressurized (CYCLOSEP-P™) or Atmospheric (CYCLOSEP™ System)

¡ ASME, Code or Non-Code Vessel Construction

¡ DGF, Eductor or Sparge Tube Flotation Design

¡ Client determines controls, valve configuration and safety controls

This chart is for reference only and dimensions may change during final design stage.

CYCLOSEP, CYCLOSEP-P, SPIRALSEP and Brise are trademarks of Siemens, its subsidiaries or affiliates.

The information provided in this literature contains merely general descriptions or characteristics of performance which in actual case of use do not always apply as described or which may change as a result of further development of the products. An obligation to provide the respective characteristics shall only exist if expressly agreed in the terms of the contract.

Oil Outlet

Water InletSpiralsep

DGF Pumps

Siemens AGFreyeslebenstrasse 191058 ErlangenGermany

Siemens AGEnergy SectorOil & Gas DivisionWolfgang-Reuter-Platz47053 DuisburgGermany

Siemens Energy Inc.411 Commercial ParkwayBroussard, LA 70518USAPhone: +1.337.837.3071E-mail: water.energy@siemens.com

Order No. E50001-E450-A122-X-7600 | © 11.2013 Siemens AG