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    Separation solutions
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The ZSQ® Inlet Device is a low shear device, which substantially reduces the inlet momentum (into the very low hundred kg/ms² (Pa) at the outlet). It also promotes very early rapid degassing at the inlet end of the vessel, enhances oil recovery, whilst eliminating the potential for droplet shatter.

The ZSQ® Inlet Device provides both flow distribution and fluid processing, created by the small fluidic vacuum produced across each ZPC Vane around the ZSQ® Inlet Device. This causes the unusual characteristic of degassing with, what in lab tests have shown to be, bubbles of a very uniform size. These bubbles provide what is considered to be a "gas flotation effect" to the oil droplets allowing enhanced treatment of small oil droplets. Due to the slow spiral action of the flow exiting the ZSQ® Inlet Device, droplets have a longer time to rise to the surface, hence providing greater opportunity to coalesce with other droplets to form larger droplets, assisting in the separation process.

Advantages of the ZSQ® Inlet Device:

  • Ideal for degassing and provides excellent oil recovery performance
  • Makes the best use of the volume available for degassing
  • Handles high throughput and inlet momentum
  • Enhances interface level control
  • Provides a minimal pressure drop
  • Can operate with any orientation of the inlet nozzle
  • Not prone to blockage by solids
  • Wide operational range – typically, providing 100% turndown
  • Reduces the size of the inlet nozzle on a new build project
  • Allows a greater fluid throughput for a set nozzle size on a revamp project
  • Easy to install in new and existing separators
  • No moving parts, thus no maintenance.

Applications of the ZSQ® Inlet Device:

  • Produced Water Separators
  • Degassers
  • Surge Vessels
  • Skimmer Vessels
  • Enhanced Oil Recovery Systems
  • Floating Production Units (FPUs).

Case Studies

Demisting Cyclones Flow Assurance

The Zeta-pdm Ltd 4G-FD® Demisting Cyclones are designed to polish the gas prior to compression. The CFD model of these cyclones includes the swirl generation element. It is the modelling of swirl that allows the CFD model to accurately predict the droplet separation characteristics of these cyclones with the client’s process data. The inclusion of swirl raises the benchmark within the industry and renders obsolete the practice maintained by the competition of modelling cyclones as straight flow through a box.

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