Reactor internals' elements 

Topsoe reactor internals include liquid distribution trays, quench mixers as well as inlet diffusers, catalyst support beams, grids and outlet collectors.

Topsoe's reactor internals  are used in all types of hydroprocessing units including hydrotreating, hydrocracking and FCC pretreating units.

Topsoe's Vapour-Lift Tube trays

Using our operating experience and in-house research, we have continuously improved the design of our reactor internals. Our state-of-the-art Vapour-Lift Tube (VLT) trays offer a number of exceptional features:

• maintain excellent performance over a wide range of operating variables such as liquid and vapour loads
• high turndown ratio
• same performance at SOR, MOR and EOR conditions
• superior performance also when tray is not perfectly level during operation
• self-cleaning nozzles ensure improved performance
• easy and fast installation
• minimum required reactor height provides more space for catalyst in the reactor
• an unmatched number of drip points and coverage ensures improved catalyst utilisation
• mechanical support system for tray plates so they are less likely to warp under load
  

Optimised reactor internals improve the catalyst performance and ensure cost-effective operation of the hydroprocessing unit.

Reactor internals design

Each Vapour-Lift Tube tray and quench mixer is custom-designed based on a detailed technical review with our clients to ensure an optimal design to meet or exceed the required performance and specifications.

Topsoe’s mechanical engineers will assist our clients during the installation of the reactor internals on-site.