Columns: Trays

The SuperVario Valve provides the largest turn-down ratio of all known column valve trays. The caged valve has a special designed hole and is very flexible for a wide range of vapour load. The valve tray is well known since many years and is very succesfull installed in many applications. The mechanical strength of the valve is very good and it is very resistant to fouling.

Special features of SuperVario valve trays:

• High turn-down ratio of 1:10 and more
• One pass trays or multi downcomer trays.
• Higher efficiency than normal valve trays
• High liquid load application (e.g. high pressure distillation or absorption)

The Jet-Coflow-Packing-Tray (JCPT) is a combination of packing and tray.

The liquid is coming through jet holes into the chimney and forced upwards with the vapour. In the packing section an intensive contact between vapour and liquid is provided and the gas and liquid will be separated at the outlet of the packing.

Special features and Applications

• Very high throughput - at least 50% higher than valve trays
• The liquid on the trays contains less gas, so the downcomer is not easy to flood
• High efficiency. The efficiency of JCPT is 15% higher than valve trays
• Tray pressure drop is 30% lower than valve trays
• High turn-down ratio - about 1:4 or larger
• Atmospheric pressure to overpressure
• Column revampings for increasing efficiency and energy conservation or for increasing capacity

Also the caged valve type is very well know for more than 70 years. Strong design for a safe process is a main advantage. Spare parts for existing columns can be provided with a short delivery time.

Because the valves and the processes are so well known the design even for large columns can be done very safe.

Valve Trays can handle loadings up to 10% higher than sieve trays while providing higher efficiency.

Special features of valve trays V1/A3:

• More than 15.000 installations worldwide
• One pass trays or multi downcomer trays.
• Safe design also for large columns
• Simple installation and reduced maintenance contribute to cost effective projects

The fixed valve tray is an improved type of sieve tray, with higher efficiency and lower pressure drop. Because of the limited working range it is perfect for continous operation at a fixed load. It is perfect for applications with fouling systems.

Special features Fix-Valve Trays:

• Easy Installation
• One or multi pass design
• Medium tray efficiency at medium pressure drop
• High resistance to fouling
• High liquid loads possible
• Good for corrosive applications
• Low costs

The rectangular push valve has another 10% higher capacity as a fix valve tray. The valves can be installed on the tray deck to force the liquid in a uniform flow through the trays without reflux zones.

4A-Tray is a combination of packed extraction column and tray type extraction column.

Special Features and Applications

• No independent downcomer area
• No cross movement on the tray
• Increasing about 10% tray efficiency
• Increasing more than 30% capacity
• High interface tension systems
• Revamping packed or sieve tray columns for increasing capacity