On the usage of online fiber measurements for predicting bleached eucalyptus kraft pulp tensile index —  an industrial case, TAPPI Journal July 2022

Application: This paper presents the use of online morphology information to predict pulp physical-mechanical properties in real-time measurements.

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Author: R. B. Demuner, C. A. Faria, A. A. R. De Almeida, and P. N. Pignaton
On the usage of online fiber measurements for predicting ble
ABSTRACT: Cellulose pulp’s physical-mechanical properties are determined by laboratory tests obtained from prepared handsheets. However, this procedure is time intensive and presents a lead time until the results are available, hindering its utilization for monitoring and decision-making in a pulp mill. In this context, developing real-time solutions for physical-mechanical properties prediction is fundamental. This work applied a mathematical modeling approach to develop a soft sensor for tensile index monitoring. The mathematical model considers online morphology measurements obtained from the last bleaching stage outlet stream and important process variables for tensile index prediction. The results obtained are satisfactory compared to laboratory results, presenting a mean absolute percentual error of 2.5%, which agrees with the laboratory testing method’s reproducibility.

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