22 PRODUCTS & SERVICES


Pulp Paper & Logistics


Predict paper strength performance as it is being made


strength properties through accurate online measurements – also known as a soft sensor – resulting in a stronger, lighter product that costs less to produce. Strength Virtual Measurement, an ABB Ability Performance


A


service for paper makers has been launched by ABB that enables mills to predict


Service, is suitable for all grades, and works by leveraging machine-learning generated models to produce online strength calculations for one or more properties at a frequency needed to meet machine-specific requirements. Frequent measurements, with an accuracy that is said to approach lab results, help operators maintain strength properties


An operator at ABB’s collaborative Operations Center in Helsinki, Finland


Lab measurements, which are performed only after a reel is produced, before Strength Virtual Measurement trials. White strip is the on-spec paper


closer to their lower limits, reducing raw material usage, increasing machine speed and enabling faster grade changes. “Our new approach to soft sensors combines unrivalled proficiency in advanced analytics, a patent-pending online calculation engine with auto-correlation and ongoing performance analysis to create a virtual measurement with proven accuracy and reliability,” says John Schroeder, global product manager for ABB Ability applications for pulp and paper. “With built in performance


Near-infrared techniques enable better measurement of stickies


A new measuring method to detect unwanted tacky contaminants known as stickies has been launched after collaboration between Voith and research and service institute Papiertechnische Stiftung (PTS) at Heidenau in Germany. The measuring method, which


uses a near-infrared (NIR) camera, enables the reliable detection of contaminants through the


July/August 2020


papermaking process and offers higher measuring accuracy and a wider range of applications compared to conventional methods. NIR enables spectral measurements to be compared and assigned to values of known contaminants. This allows further classification of the contaminants based on their chemical composition. Both adhesive and


non-tacky contaminants can be identified and classified using the method. “Using NIR technology to measure stickies allows the papermaker to determine sticky balances with reliable and sufficient accuracy based on single measurements,” says Dr Linus Friedrich, senior R&D manager for Fiber Systems at Voith Paper. “This demonstrates one of the


indices, operators can monitor process parameters, respond to alerts and rapidly adjust paper machine settings to optimise paper strength, reduce costs and increase production throughout, ultimately increasing profitability.” Strength Virtual Measurement


links with third-party systems and ABB services that include distributed and quality control systems, L&W Autoline and other Ability products. It is the first of a number of new Virtual Measurement soft sensor products to be released during 2020.


benefits of the new measurement technology. With conventional methods, this was only possible to a limited extent due to the large variation in results.” Due to its technological


advantages, the NIR measuring technology has the potential to replace established methods for measuring stickies. The publication of a technical rule – DIN SPEC 6745 – on sample preparation and the performance of measurements has created the underlying conditions for setting a new standard in the paper industry, says Voith.


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36