Yankee Dryer Internal Upgrade Increases Drying Efficiency at von Drehle Corporation in North Carolina
May 19, 2022
The addition of 500 FPM coupled with the CD moisture profile improvement and subsequent decrease in converting rejects has led to an additional 7 tons per day of through put. This increased tonnage has been extremely beneficial to von Drehle in these times of high product demand.”
Richard “Buzz” Philips, Paper Maker Excellence Leader
Summary
Location
von Drehle Corporation, North Carolina, USA
Challenge
Poor cross machine moisture profile
Yankee dryer efficiency
Maintenance of existing equipment
Solution
The von Drehle and Valmet teams partnered together to update the Yankee internal equipment with a new Valmet double long straw design. Valmet’s long straws condensate evacuation system provides more uniform drying of the paper in the machine direction.
Results
Improved moisture profile
Improved Yankee drying efficiency. Before the upgrade, the machine did not have any additional drying capacity. The machine speed was drying limited at 5400 FPM. With the internal upgrade, the machine has gained an additional capacity of 500 FPM.
