The Z-Box Steam Profiler - Fourdrinier
Transphase Technology LTD introduces its advanced Z-Box steam box design that offers a major improvement over competitive designs.
The new multiple Z-Plates, mounted in the machine direction, allows the custom design of a steam diffuser with multiple applications of steam in the MD direction to provide precise control of the steam delivery from the CD zone to the web. The design is customized to suit the High vacuum dewatering unit and it's cover.
Control of the exiting steam jet velocity permits the matching of the web velocity to steam impingement velocity over the vacuum area, producing an intense, narrow steam footprint. This results in a better 2 sigma CD moisture improvement than competitive steam boxes.
Results:
CD bump response + or - 2.5% or greater
CD moisture profile reduction 60 - 80%
Lower steam usage over other steam box design
Elimination of steam spillage
Reduced energy consumption in the dryers
Increased sheet consistency
Increased machine speed
Improved machine runnability
