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    Separation solutions
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The ZP-210 Vane Type Demisting Device offered by Zeta-pdm Ltd can be utilised in both horizontal and vertical separators and consists of high efficiency double “pocket" or "trough" type vanes, where the agglomerated sheet of liquid flows into the vertical vane troughs, which extend over the complete width of the vane pack, perpendicular to the horizontal gas flow.

The "trough" is shielded to partition the falling liquids (inside the drainage chambers) from the main gas stream flowing within the vane blades, thus minimising any re-entrainment of the separated fluids.

After running into the liquid collector, the liquids are then drained into the bulk liquid within the separator, returning to a level below the lowest liquid level, i.e. below the Low Low Liquid Level (LLLL), via a liquid "downcomer" system.

Advantages of the ZP-210 Vane Type Demisting Device:

  • Offers a high gas / liquid separation efficiency at high operating pressures
  • Low re-entrainment
  • Handles high throughput
  • Handles high liquid loading
  • Low pressure drop
  • Robust construction
  • Reduces the vessel size on a new build project
  • Allows a greater fluid throughput for a set vessel size, on a revamp project
  • Easy to install in new and existing separators
  • No moving parts, so no maintenance.

Applications of the ZP-210 Vane Type Demisting Device:

  • Production Separators
  • Test Separators
  • Gas Scrubbers
  • Gas Knock-out Drums
  • Slug Catchers
  • Flash Drums
  • Process Vessels and Columns
  • Floating Production Units (FPUs).

Case Studies

Motion Control on an FPSO

The upstream piping (or isometrics) will always dictate the condition of the flow entering the vessel. Special care should therefore be taken when designing the piping in a gas production system to minimize the risk of maldistribution and avoid the droplet shatter that could reduce the performance of the downstream separation internals. By modelling the isometrics with CFD, maldistribution can be reduced and the size of any droplets entering the separator can be predicted. This is useful for troubleshooting existing vessels and optimising the design of the process internals.

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