Equipment » Distillation » Features / Applications

(DualFlo Tray)

How Dualflo® trays work

Artisan Dualflo trays typically range in size from 3 to 84 inches in diameter. The pressure drop across a Dualflo tray is measured in inches of water and it depends on the height of the liquid on the tray. The height is typically 3 to 6 inches of fluid, also known as the “froth”.

Column F-factors range from 1 to 3 depending on the physical properties of the liquid. Overall tray efficiencies range from 20 to 80% depending on the application.

Materials of construction include stainless steel (300 series and Duplex), carbon steel, nickel, Inconel®, Monel®, Hastelloy®, and titanium.

Application-specific tray design ensures high performance Distillation diagram

Because each application is unique, we combine our extensive experience with pilot data from our pilot plant to determine optimal tray design. Artisan has designed Dualflo trays for handling thousands of gallons per hour of throughput. They have been used for over 30 years in more than 70 installations worldwide.

Distillation of solids-containing and fouling materials

Problem

Distilling solids containing, foaming, and fouling aqueous and organic materials can be difficult and expensive.

Solution

Artisan’s proprietary Dualflo distillation column and trays demonstrate superior performance in severe applications where packing or conventional trays have failed. Compared to conventional trays, Dualflo trays eliminate the need for overflow weirs and downcomers. They use the entire column cross-section as an active mass transfer surface, enabling higher throughput and eliminating dead spots. Simplicity of design and ease of cleaning greatly reduce both installation and operating costs.

Other Dualflo applications:

  • Removing contaminants down to low ppm levels
  • Processing feeds containing dissolved and suspended solids with no pre-treatment in most cases
  • Stripping off aromatic hydrocarbons, all common chlorinated solvents, alcohols, ketones, and other miscellaneous solvents/hydrocarbons
  • Fractionation, stripping, deodorizing or any other operation requiring gas-liquid contact