- Longest weir length per given column diameter
- Largest downcomer area (DC) per given column diameter
- Most uniform flow path length
- Most uniform vapor distribution
- Minimum inactive zones
- Maximum bubbling area
- Refinery: main fractionators' PA and stripping sections
- Olefins: deethanizers, depropanizers, debutanizers, deisobutanizers, superfractionators, C2 and C3 splitters
- Aromatics: xylene splitters, xylene rerun, raffinate columns
- Gas sweetening: absorbers, regenerators
Shell HiFi™ Plus trays
Shell HiFi tray
Shell HiFiTM Plus trays
Highest capacity at large liquid loadings:
- Lowest pressure drop at large liquid loadings
- Best mass transfer efficiency at large liquid loadings
- Tray spacing as low as 300 mm (11.8 in)
Can be equipped with different types of tray deck:
- MVG™ tray deck
- MMVG™ tray deck
- Other conventional valves like BDH™ floating valves
High reliability:
- Several hundred columns in operation
Mechanical features:
- Multi-downcomers are located offset to the cross section centerline
- Multi-downcomers are supported by a central major beam and 360° tower support ring
- No need for downcomer bolting bars
- Available in boltless lip-slot panel connections that minimize installation time by up to 30%
Shell ConSep™ trays
Diagram of Shell ConSep™ trays
Shell ConSep™ trays
Shell ConSep™ trays utilize the principle of de-entrainment by centrifugal force to exceed the gravitational limitation of jet flood.
The ConSep tray combines the large bubbling area and liquid handling capacity of the contacting Shell HiFi™ trays (see right side of picture) and a centrifugal separator (see left side of picture) in a single stage.
Ideal for increasing existing plant capacity (revamps)
- Suitable mainly for 1-to-1 revamping of towers equipped with high performance trays
- Does not require any welding to the tower wall
- Provides up to 40% more capacity than any high performance tray
Proven technology and excellent reliability based on
- Actual operating experience
- Extensive research and development
- Fractionation Research Inc. (FRI) proven
- More than 25 towers in operation
Shell CS™ Grid trays
Shell CS™ Grid tray
Shell CS™ Grid trays
The Shell CS™ Grid trays are a high-capacity, dual-flow type of tray.
Functional features:
- The contact area for liquid and vapor is achieved by means of adjacent bars
- The open area for liquid and vapor passage is defined by the size and the pitch of the bars
Main applications
The Shell CS™ Grid trays are mainly used for heat transfer services in fouling applications, and or corrosive environment:
- Slurry pump around of fluid catalytic cracking main fractionator
- Top pump around of crude distillation unit main fractionator and coker main fractionator
- Bottom pump around of thermal cracker main fractionator and visbreaker main fractionator
Shell HiFi™ Extraction trays
Shell HiFi Extraction tray
Shell HiFi™ Extraction trays
- Suitable for systems with interfacial tensions below 25 dyne/cm and large phase ratios
- To enhance capacity of existing extractors
- To increase capacity by up to 25% compared with rotating disc contactors
- To increase capacity by up to 15% compared with conventional extraction trays
- Allow for small tray spacing down to 300 mm
- Can be used among others in aromatic extraction, caustic treating, and lube oil applications