28 PROJECTS & CONTRACTS
Faster start ups and better quality at Kehl
Pulp Paper & Logistics
Papierfabrik August Koehler SE at its Kehl mill in Germany (see PPL November-December 2017). Using Voith’s
M
AdvancedPRODUCTS range for the PM2 line, Koehler Kehl has been able to reduce the machine’s water consumption, achieve a faster starting curve and at the same time improve paper quality. During the upgrade of the press section on the PM2 the focus was on achieving more stable operation, reliable planning of shutdowns and improved safety in the production process. On the PM2, almost 130,000 metric tons of thermal paper is produced
January/February 2018
ore has been revealed about the upgrades being made by
per year with basis weights of between 35 and 47 g/m². In the course of various
improvement measures, Voith fitted the press section with products from PressMax range of its AdvancedPRODUCTS. The key objective was to continually improve the quality of the paper grades and reduce operational costs.
This was achieved by using of
the QualiFlex press sleeves for the shoe press. Refinements were made to the sleeves and their abrasion behaviour was improved. On the PM2 this led to a doubled runtime. This reduced the maintenance work for replacing the shoe press covers. Previously, the press sleeves needed to be changed on average
after 180 days. An increase in productivity was also the reason for introducing press felts with PeakElement which enables a faster start and better nip dewatering than standard felts. As a result, the start-up curve of the machine could be shortened considerably following the felt change. Says production manager Joachim Fuchs: “With the installation of the Voith products, we were able to clearly improve the start-up curve after felt change on the PM2. The machine can be brought to its maximum speed faster and with fewer problems, resulting in greater availability and lower operating costs.” In addition, the measurements taken by the FeltView system
Voith’s product manager Wiebke Petzold (left) discusses the PM2 upgrades with Koehler Kehl’s production manager Joachim Fuchs
delivered important moisture and permeability data for targeted conditioning of the pick-up felts. Koehler can use this data to continually optimise machine settings and improve efficiency. Critical felt conditions can be identified before they impair the process and the felts are run in optimum operating condition. FeltView also makes manual measurements redundant, which ultimately improves the safety of the production process. The upgrades at Kehl are part of a €500 million investment plan that will be completed in 2020.
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