The SuperBatch cooking process today is based on the SuperBatch-K model, which is specially developed to take care of eventual calcium complex formation during the front-end liquor fills.
The plant typically comprises a number of 300 to 400 m3 digesters, two pressurized liquor accumulators and three atmospheric tanks. Besides batch cooking operations there are also continuous operations, such as; heat transfer in the tank farm, fiber separation, condensate handling and gas collecting.
Throughout the cooking cycle all the liquors are pumped into the digester through the bottom part and are displaced through the displacement screens located in the upper part of the digester. Circulation is done through the suction screens in the cylinder part and the liquors are returned into the digester through the displacement screens and bottom part.
We have evolved the former RDH and SuperBatch technologies into the latest, most advanced batch batch cooking technology referred to as DualC™ Cooking.