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

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.

Journal articles
Magazine articles
Open Access
Investigation of the Cellulose-Water Relationship by the Pressure Plate Method, TAPPI Journal July 2022

ABSTRACT: The swelling and water retention properties of pulp fibers are of basic importance in papermaking.

Journal articles
Magazine articles
Open Access
Improving refining efficiency with deflocculation, TAPPI Journal May 2022

ABSTRACT: The ability to load a refiner requires the formation of a fiber mat between opposing refiner bars. One of the consequences of this is the formation of flocs that persist through the refiner grooves and exit the refiner. These flocs interfere with sheet strength, requiring additional energy to make up the strength deficit. In addition, flocs can initiate string formation, resulting in machine efficiency issues such as cross-machine profile deterioration and the downtime required to correct it. Novel refiner plate modifications have been shown to improve refining efficiency in otherwise identical refiner plates. Energy savings are typically around 15% of gross refining energy on the basis of the treated stock, although much higher reductions have also been seen. Addressing this previously underappreciated flaw in conventional refining enables greenhouse gas reduction and other benefits related to sheet strength and machine efficiency.

Journal articles
Open Access
Dimensioning a recovery boiler furnace using mathematical optimization 15FEB119

Dimensioning a recovery boiler furnace using mathematical optimization, TAPPI JOURNAL February 2015

Journal articles
Open Access
Mill study on improving lime kiln efficiency 15FEB133

Mill study on improving lime kiln efficiency, TAPPI JOURNAL February 2015

Journal articles
Open Access
Editorial: 2014 International Conferences • Fiber processing

Editorial: 2014 International Conferences • Fiber processing, chemicals & energy, asset management, regulations, and industry sustainability issues, TAPPI JOURNAL February 2015

Journal articles
Open Access
Improved steady-state models for chlorine dioxide delignification sequences that include washer carryover effects 15-Feb-93

Improved steady-state models for chlorine dioxide delignification sequences that include washer carryover effects, TAPPI JOURNAL February 2015

Journal articles
Open Access
Life cycle assessment of ECF bleaching sequences with ocus on carbon footprint 15-Jan-17

Life cycle assessment of ECF bleaching sequences with focus on carbon footprint, TAPPI JOURNAL January 2015

Journal articles
Open Access
Understanding recovery boiler smelt runoff phenomena 15-Jan-41

Understanding recovery boiler smelt runoff phenomena, TAPPI JOURNAL January 2015

Journal articles
Open Access
Editorial: 2014 International Conferences • Part 2: Focus on the Liquor Cycle, TAPPI JOURNAL July 2015

Editorial: 2014 International Conferences • Part 2: Focus on the Liquor Cycle, TAPPI JOURNAL July 2015

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