500.000 € Savings
Lee & Man Paper relies on DuoCleaner Express
2014-01-09 - Lee & Man Paper in China commissioned Voith to equip the PM 4 in Dongguan with DuoCleaner Express. Since the rebuild in the middle of 2011, there has been a significant improvement in cleaning effectiveness and performance of the dryer fabrics. This has resulted in higher productivity and reduced the operating costs by approximately 500,000 €. For this reason, the paper manufacturer decided to have 15 other machines equipped with the same cleaning system.
It only took two days for Voith to rebuild the pre-dryer section of the PM 4 as the first of 16 machines at Lee & Man Paper. The liner machine produces corrugated medium in the 90–200 g/m² basis weight range. Voith upgraded the original DuoCleaner on the top dryer fabrics of the 1st and 2nd dryer group and on the bottom dryer fabric of the 4th group with the improved DuoCleaner Express system.
The DuoCleaner Express traverses with up to six concentrated high-pressure cleaning jets that spray onto the dryer fabric at a defined angle. A water jet injector in the cleaning head creates negative pressure and, together with the connected vacuum, reliably removes the deflected water and dirt particles. A small amount of water penetrates through the fabric into a tray and is discharged. An air knife blows out the remaining water from the fabric.
The DuoCleaner Express traverses with up to six concentrated high-pressure cleaning jets that spray onto the dryer fabric at a defined angle. A water jet injector in the cleaning head creates negative pressure and, together with the connected vacuum, reliably removes the deflected water and dirt particles. A small amount of water penetrates through the fabric into a tray and is discharged. An air knife blows out the remaining water from the fabric.
The improved design pays off. The new system substantially reduces the steam consumption of the paper machines – and with improved paper quality at the same time. Lee & Man Paper saves up to 500,000 € annually in water and energy costs – just on PM 4 at the Dongguan location. After the successful rebuild, Lee & Man Paper awarded Voith the contract to equip 15 other machines at their sites in China with the DuoCleaner Express. Altogether this Chinese paper manufacturer is using over 50 DuoCleaner Express systems. //