The high performance trays are based on multi downcomer principle which allows to accommodate high liquid loads.

Shell Calming Section Trays

Hydraulically self balancing tray

Longer weir length compared to conventional downcomers

• Able to handle moderate liquid rates

Truncated downcomers

• Maximise active area
• Increase jet flood capacity
• Minimize entrainment
• Up to 30% higher useful capacity compared to conventional trays

Lowest tower height per theoretical stage

• Tray spacing as low as 300 mm (11.8 in)

Can be equipped with different types tray deck

• Sieve holes
• Float valves
• Fixed valves (see Shell CS Plus)

Mechanical features

• Multi-Downcomers located offset to the cross section centreline
• Supported by 360° tower support ring
• No need for downcomer bolting bars
• Available in boltless Lip-Slot panel connections: minimise installation time up to 30%

Shell HiFi Trays

Best tray for high liquid loadings

• Longest weir length per given column diameter
• Largest DC area per given column diameter
• Most uniform flow path length
• Most uniform vapor distribution
• Minimum inactive zones
• Maximum bubbling area

Highest capacity at large liquid loadings

• Lowest pressure drop at large liquid loadings
• Best mass transfer efficiency at large liquid loadings
• Lowest tower height per theoretical stage Tray spacing as low as 300 mm (11.8 in)

Can be equipped with different types tray deck

• Sieve holes
• Float valves
• Fixed valves (see Shell HiFi Plus)
• High reliability
  Several hundred columns in operation

Mechanical features

• Multi-Downcomers located offset to the cross section centreline
• Multi-Downcomers supported by a central major beam and 360° tower support ring
• No need for downcomer bolting bars
• Available in boltless Lip-Slot panel connections: minimise installation time up to 30%

Shell CS Plus and HiFi Plus Trays

The Shell CS Plus and HiFi Plus trays are enhanced versions of the standard Calming Section and HiFi trays. Following two additional features are incorporated on to both tray types to boost vapor and liquid capacity:

MVG valves on active panels

• Reduce entrainment
• Maximize Jet Flood capacity

Crown Inlet Device (CID) at DC’s entrance

• Enhance vapor-liquid disengagement
• Maximise DC capacity

These features provide up to 10% higher useful capacity than the standard CS and HiFi trays at same tray efficiency.

Shell Swirl Tube Trays

• Extremely high capacity at low flow parameters
• Based on sophisticated de-entrainment device from ConSep tray technology
• Can exceed capacity of structured packing significantly, but with pressure drop of trays
• Ideal for low liquid rate applications at high pressure
• Efficiency equivalent to structured packing
• Proven performances in several hundred applications

Shell Extraction Trays

• Suitable for system with interfacial tensions below 25 dyne/cm and large phase ratios
• Enhance capacity of existing extractors
• Increase capacity up to 25% over RDC
• Increase capacity up to 15% over conventional extraction trays
• Allows for small tray spacing down to 300 mm