Improvements Steps To

No. 38 / 2-2018 Braviken Mill 53 The BR1 reject refiner needed a complete Left to right: Fredrik Bragsjö, TMP Manager, Bragsjö (l) and Muggerud discuss production tailor-made solution to ease plugging Braviken; Olle Lindeberg, Production Engineer, issues in Braviken’s TMP control room Braviken; and Erik Muggerud, Senior Process Specialist, ANDRITZ quick to adapt to these changing times, A TAILOR-MADE SOLUTION Crucially, and one of the bonuses of mov- which means keeping a close eye on all Due to the many rebuilds over the years, ing the plug as close as possible to the the equipment being run, old and new, a simplification between the reject screw refiner, safety at the TMP plant has been and making sure maximum efficiencies press and the refiner meant taking out greatly improved. Muggerud says, “The are being obtained. some of the old equipment, but also reus- reject pulp will not have to cope with ing as much as possible of the existing the backflow of steam that can plug the The TMP plant at the mill is very much a mix- equipment. A side entry plug feeder, chute, chute down to the refiner feed. There ture of old and new equipment, and the and level conveyor were then installed as is always a danger to operators when old TMP lines were pioneers in TMP pulp for well as a new ribbon feeder housing. plugged pulp needs to be removed from newsprint paper. In fact, the occasion of its the chute; this makes a big difference to SMALL start-up was something of a national event The complexity of the project and space safety at the mill.” STEPS at the time, with the King of Sweden symbol- constraints in the refiner area meant that it ically pushing the big red start-up button. was not possible to use standard equipment Has the rebuild of the BR1 reject refiner and the ANDRITZ team had to innovate with achieved the results the mill was look- TO “We have always had a mindset of con- a tailor-made engineered solution. ing for? “I would say a definite ‘yes’, says tinuously improving existing equipment at Lindeberg. “We have increased capac- the mill,” says Olle Lindeberg, Production The first customer contact for the proj- ity and have better quality pulp and a Engineer, Braviken. “And it’s not always ect was in 2016, with the contract signed safer working environment, but, added to about the glamorous picture of install- in April 2017. Removal and erection work that, the renewed BR1 comes with much ing all things big, shiny, and new. At this started in September 2017 with start-up greater flexibility, meaning we can adapt BIG time of a highly competitive environment, taking place just five days later. the refiner for making pulp for SC paper IMPROVEMENTS often you have to roll up your sleeves and and then change it again when making deal with the older equipment, make it “ANDRITZ experts came up with the per- book paper.” better, take smaller but effective steps, fect solution, mostly due to the intense The Holmen Group’s Braviken Paper Mill, situated in eastern Sweden, has always prided itself gradually eliminating the bottlenecks.” knowledge they have both of TMP and of our plant at Braviken,” says Brag- on being at the top of its game when it comes to production efficiency and quality of final CONTACT The latest in the line of many small-step sjö. “It would have been easy to have product. When it needed to further enhance its TMP’s capacity and efficiency – but crucially improvements at the mill was the rebuild just taken out the old and replaced with Regional Manager Erik Muggerud keep costs to a minimum – ANDRITZ was at hand to provide a tailor-made solution. of its “BR1” reject refiner. “We wanted to new equipment, but cost constraints did [email protected] improve the quality of the pulp, increase not allow this, and it means we can now Product Manager tensile strength, and reduce shives with spend our valuable resources on solving Ernst Hauck A walk through the entrance to the declined dramatically, resulting in a highly SC papers for large volume catalogues the aim of making the pulp more suitable the next bottleneck.” [email protected] Braviken Paper Mill tells one that the competitive business environment with and long run mass produced magazine for a smooth surface on the paper we paper machines at this mill were once even the smallest production efficiency titles, such as the still-popular weekly TV produce. And of course, look for ways to thoroughbreds in the world of newsprint changes making a difference. guides. We also produce book papers reduce energy,” says Bragsjö. production – the walls here are adorned here at Braviken.” Holmen’s local office in Norrköping with congratulatory world record-break- Fredrik Bragsjö, TMP Manager at Braviken Erik Muggerud, Senior Process Specialist, ing plaques heralding a different time in says, “Our whole business landscape has A MIXTURE OF OLD AND NEW ANDRITZ, adds, “The mill also wanted an the 1970s and 80s when newsprint was a changed over the years. At one time we The Braviken Paper Mill, which first began increased capacity and simplification of dominating force in global papermaking. were sending newsprint all over Europe, producing in 1977, could be described as its BR1 reject refiner. The main goal was to and even further afield across the world. a seasoned player in the modern history create a barrier (plug) for steam as close Fast forward into the 21st century and the of papermaking, having been through the as possible to the refiner to be able to world of paper production is a completely “Now we are much more focused on pro- ups and downs of market demand trends increase the production rate, at the same different one; graphic paper demand has ducing high-quality, wood-containing in the industry. The mill has always been time as reducing energy usage.”.

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