PAPERTECHNOLOGYINTERNATIONALFigure 2: MCE pump and SXchemical mixer arrangement forthe 8 to 18% consistency range.blades with changing pitch that enable excellent pulp 昀氀uidizing,degassing, and pumping results in the demanding pulp and papermill processes.Pumping systems with Fluider™ technology are mostly usedafter washers, thickeners, 昀椀lters, and reaction towers to pump thestock to the next process stage or to a washer. The MC pumpingsystems can also make sure that bleaching liquid or processchemicals are mixed into the stock ef昀椀ciently. The main advantagesof this technology include high levels of ef昀椀ciency – thus reducingpower consumption – and its ability to maintain an exact turbulencelevel, which prevents the over-treatment of the 昀椀ber. Another distinctfeature of the Fluider™ impeller is its ability to work ef昀椀cientlyirrespective of the stock level in the dropleg. The MDL dropleg is abarrel-like tank at the low-pressure side of the pump that ensuresproper in昀氀ow conditions for the MC pump.The MCE pump series covers capacity ranges of 10to 10’000 admt/d and pump heads up to 240 meters. Materialalternatives for these pumps are duplex steels like A-890 grades 3Aand 5A. 654SMO or titanium can be selected as the best corrosionresistant material for the wetted parts of the MC pump.Problem solving with TMS tower management systemDo you have problems related to storage towers? Is theretention time of your storage tower insuf昀椀cient? Do you suspectthat your tower is channeling? Do you suffer from occasionalunexplained consistency variations? Do you have problems with airor bacteria in the pulp? Do you want to run a big storage tower witha high production rate, and you need small discharge consistencyvariations? Do you need a high-consistency storage tower withlow- consistency discharge? Do you have problems related to pulpquality? Are you running a storage tower with a low pulp level andwant to save energy in pumping?If your answer is yes to any of the above questions, thenSulzer’s TMS tower management system could help your process.Sulzer TMS tower management systemSulzer’s TMS tower management system controls allpumping and mixing requirements in tower process applications andis based on proven and innovative solutions and products.The TMS tower management system is designed to improvethe performance of any kind of tower, regardless of inlet or storageconsistency, shape, or size. The system can be utilized with straighttowers, such as high-consistency bleaching and storage towers,reduced bottom medium-consistency storage towers, blow tanks,low-consistency broke towers, and more.TMS tower management system in chemical pulp millsFigure 3: Sulzer MC discharge scrapers, MC pumping systems,TES, GLI, VULCA, and SALOMIX™ agitators in a chemical pulpmill process.TMS tower management system in mechanical pulp millsFigure 4: Sulzer MC pumping systems and process pumps, MCdischarge scrapers, TES, GLI, and SALOMIX™ agitators in amechanical pulp line.TMS tower management system in paper millsFigure 5: Bleaching.TMS tower management system in paper millsFigure 6: Sulzer TES, SALOMIX™ agitators and process pumpsin paper mills.143
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