22 VALMET


Continuous cooking for clean and consistent pulp


Pulp Paper & Logistics


Pulp quality has been optimised with Valmet’s two-vessel system at SCA Obbola’s new cooking plant, reports Kerstin Olofsson. Photography by Henrik Olofsson and Bergslagsbild


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leaner pulp, higher, more-consistent quality and reduced maintenance are just some of the benefits since SCA’s liner mill at Obbola on the east coast


of Sweden brought its new cooking plant into operation in 2015. “We’ve also been able to reduce energy consumption in the cooking system by 30


May/June 2018


percent,” says Andreas Vikström, head of the cooking and fibre department of the SCA liner mill. Obbola’s previous cooking plant was built in 1961 and was a batch system with eight digesters. Despite a number of renovations, the batch digester had reached the end of the road, and in October 2015 it was replaced with Valmet’s CompactCooking G2, a two- vessel continuous cooking system. It consists primarily


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