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A smart homogenization approach improving process knowledge and papermaking competitiveness


During the nineties, research approaches within water/pulp management, were mainly focused on the study of white-water detrimental components and on (bio) chemical-technological solutions to reduce them. Most paper machine problems have their origin in these dissolved/colloidal matters. The impact of these problems can be added up to 1 billion EUR/year.

The instability in the wet-end system causes a lot of problems like detrimental substances, stickies and anionic trash. This will lead to reduced process performance or even serious production failures, e.g. deposits on machine parts, out-of-speck production, machine downtimes due to web breaks etc. Increased chemical needs or higher effluent loads may also originate from detrimental substances. These effects in crease the production costs of paper and board and the environmental impacts. In addition, as the dewatering at the web decreases, energy consumption increases correspondingly.

The intention of the SHAKER concept is avoiding these problems from the very beginning, so a real prevention concept instead of a reaction concept. The reason of process instability is bad homogenisations and fast de-mixing of pulp/water within deadzones in tanks and pipes. Long residence times create an increase of biological activity, resulting in gradients of degradation products, which finally lead to problems. This concept is a step forward within sustainable papermaking and fits with EU industrial policies.

The main objectives are the investigation of the source and behaviour of disturbing substances, the sensitivity to micro-shocks, a reduction of 20% of water, 20% of energy, and 10% of chemicals, leading to a cost reduction of 10 EUR/ton of paper for SME paper mills and a development of an estimated market of about 10 million EUR/year for the SME suppliers.

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Molenstraat 2-B

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Participants (9)