Voith Paper recently commissioned the world's largest DIP capacity (1500 t otro/day) stock preparation line at Palm Paper in King's Lynn, England.
One crucial factor in the success of the stock preparation facility is its continuous pulping capacity using only a single Twin Drum. During the start up on September 16, 2009, a pulping capacity equivalent to 2,400 t/day was achieved over the course of several hours, making the Twin Drum in King's Lynn the recycled paper pulping unit with the highest input capacity for DIP in the world.
Recovered paper is mixed in the Twin Drum with water at a stock consistency of 25%, which is gently pulped and then separated from the reject. The Twin Drum consists of a pulping drum and a sorting drum,which provide the ideal conditions for both processing steps. As a result, compared to conventional, single-section drum pulping systems, it is possible to reduce the use of chemicals by 20-40% in addition to reducing the energy used by about 20%. The Twin Drum for King's Lynn is the largest drum pulping unit that Voith Paper has ever delivered. The second of these giants is already in the construction phase.