Advantages compared to conventional trays:

• Higher capacity: up to 30%
• Lower pressure drop: up to 20%
• Equal or higher mass transfer efficiency
• Lower hydraulic gradient
• More uniform liquid flow
• More uniform vapour distribution
• More uniform L/V on tray deck
• Higher fouling resistance

Characteristics:

• Enhanced tray deck design
  optimized MVG valve layouts
  redirecting and froth promoting devices such as Baffle Bar and Push Valves

• Improved downcomer technologies
  Sloped
  Truncated
  Stepped
  Multi-chordal

FRI Validation:

• Superiority of VGPlus tray technology has been confirmed by independent experiments at FRI
• Tray has been tested in a 1.2m diameter tower at 7 and 11bar with i-C4/n-C4 system
• VGPlus provided up to 10% higher capacity compared to competitors high performance tray
• VGPlus tray efficiency increased up to 15% of competitors high performance tray
• VGPlus is best ever tested high performance chordal downcomer tray

New Ways in Tray Development:

• Computational Fluid Dynamics (CFD) supported classical research and pilot testing in developing the VGPlus trays
• CFD used for the first time of tray history
• CFD allows to study complex two-phase phenomena, e.g. froth flow and liquid entrainment

VG AF (Anti Fouling) trays provide superior anti-fouling performance while delivering high capacity and efficiency making these trays ideal for debottlenecking fouling services.

• VG AF trays are part of VGPlus tray family
• Specially designed for fouling services
• Uses large fixed valves
• Tailored design features on tray deck reduces stagnation zones
• High performance downcomer technology enhances liquid disengagement on tray deck