Riser Deck Distributor/Redistributor

The Riser Deck Distributor is a deck type distributor where orifices are located on the base/deck of the distributor. Gas risers located between the orifices propagate liquid cross-flow, thereby enhancing distribution quality.

This style of distributor is generally supplied in multi-piece construction and all joints are sealed with gaskets. Attachment is by clamping to a ledge/support ring that is welded to the column wall. This distributor can be provided with anti-migration bars in the risers to eliminate the requirement for a bed limiter.

Redistributor risers are capped to prevent bypassing of liquid through risers from liquid raining down from the packed bed above.

Selection criteria*:
• Column diameter > 600 mm (24 inches)
• Maximum Turndown ratio 2:1
• Liquid rates > 5 m³/m²hr (2.0 GPM/ft²)
• Low fouling

*Selection criteria guidelines provided are typical but not limiting. Under certain conditions, special design provisions can be made for accommodating varied hydraulic and mechanical requirements.