Customer: Essity
Production: Tissue
Supplier: Toscotec
Description: Toscotec and Essity successfully started up the world’s first tissue machine running solely on geothermal steam at their Kawerau site in New Zealand. This pioneering project has fully achieved its targets, ahead of schedule. First and foremost, the rebuilt tissue machine (PM3) has registered a significant reduction of the carbon emission associated with its production, due to the replacement of natural gas burners with a completely geothermal drying system. Moreover, the upgrade delivered a production increase and improved the machine’s formation and product range capability.
Details: PM3 underwent a major rebuild supplied by Toscotec in collaboration with the client Essity. The supply included a complete TT SAF Short Approach Flow system, a new TT Headbox, modifications to the forming and press sections, as well as a new drying section. In the drying area, both the new TT SYD Steel Yankee Dryer and the steam-heated TT Hood use the geothermal steam tapped from the ground. The air system also features Toscotec’s TT Swing to switch seamlessly from a parallel to hybrid configuration (with heated air only in the wet-end hood) based on the production requirements. The full-on supply of the rebuild is completed by new doctor blades and the tail-threading system in the post-dryer section of the machine.