Valmet

Tubel Evaporators

Valmet’s well-proven Tubel design has been shown to provide greater availability in high dry solids or scaling applications.

High dry solids without scaling problems

In a Tubel evaporator, a falling film of liquor is evaporated on the outside of tubes heated by steam or vapor. 

The open design eliminates the risk of plugging. And the large distance between the tubes minimizes the risk of bridging.

On-line washing is easy, thanks to the convex shape of the tube surface. Off-line washing, with hydroblasting, is normally never needed in kraft liquor applications.

Mechanically reliable

The heating surface in Tubel Evaporators are manufactured in our own workshops with proven, automated manufacturing methods.

Tubes are mechanically reliable and give the heating surface superior strength and a longer service life. Valmet’s Tubel Evaporators are known for their outstanding reliability.