For extreme fouling services, Koch-Glitsch offers SUPERFLUX® trays, which can employ many of the capacity and efficiency features of SUPERFRAC® trays.

SUPERFLUX® tray for bioethanol beer stripper
  • Diameters from 3 ft [900 mm]
  • Fouling resistant with large
    fixed valves
  • Conventional downcomer 
    design allows simple revamps
  • PURGE™ downcomer is a
    sediment solution
  • Directional valves promote 
    self-cleaning of active area


SUPERFLUX® tray with
PURGE downcomer option
SUPERFLUX® tray with PURGE downcomer
To ensure the appropriate technologies are applied for each SUPERFLUX® tray design, Koch-Glitsch engineers work with each client to obtain the specific charactertisics of fouling that must be addressed. Features suitable for the specific application are combined into a final design to produce a tray capable of longer run times between cleaning shutdowns.
Conventional Downcomers
SUPERFLUX trays with conventional downcomers use active area enhancements and may have inlet area enhancements. The Enhancements page provides additional descriptions.
The straightforward design of the downcomers allows the use of standard tray construction and simplifies installation.
PURGE Downcomers
In processes where downcomer fouling is known to cause frequent shutdowns, Koch-Glitsch offers the PURGE downcomer configuration. The PURGE downcomer has proven suitable to resist fouling for such services as polymer slurry, acrylonitrile, and butadiene services.
The PURGE downcomer SUPERFLUX trays use active area enhancements and may have inlet area enhancements. Very specific advanced downcomer technologies have been applied to the PURGE downcomer trays.
Tray valves
SUPERFLUX trays provide increased fouling resistance, which can lead to increased run times.
  • Large diameter fixed valves that are fouling resistant are a standard feature. 
  • Several valve options are available that promote self-cleaning of the active areas. These valves have directional components that utilize vapor energy to provide forward-lateral push on the froth. This action is critically important to maintain proper tray activity and reduce residence time of solids on the tray deck.
  • Particular attention is paid to the peripheral areas of the deck where stagnation may lead to solids deposition. Directional valves are placed in this area to both increase activity as well as promote a uniform flow profile. These components combine to reduce the residence time distribution and enhance the fouling resistance of the trays.
Such a tray design is suitable for processes which are particularly prone to active area fouling, such as sour water strippers and beer strippers.
Construction details
  • Conventional-style downcomers that are either straight or sloped
  • PURGE downcomers for very severe services
  • Designs for specific application requirements
  • FLEXILOCK® construction


Design options