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Journal articles
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Open Access
Effects of agitator blade scaling on mixing in dissolving tanks, TAPPI Journal April 2022

ABSTRACT: Hard calcium carbonate scale often forms on the agitators in smelt dissolving tanks. The effects of this scale on mixing are not well understood. While mixing in tanks has often been modeled in the literature, there have been no studies involving agitator scaling. To better understand the impact of agitator scaling on hydrodynamics and tank concentrations, a steady state, three-dimensional (3D) model has been developed for a smelt dissolving tank at a kraft pulp mill. In this work, four cases are compared: an agitator with no scaling, mild scaling, moderate scaling, and extreme scaling. The extreme scaling case is representative of scale buildup on a dissolving tank agitator that was significant enough that the agitator had to be stopped and cleaned. The reduction in the agitator fluid jet velocity is relatively small for the mild and moderate scaling cases, but it becomes more significant for the extreme scaling case, for which the results indicate that the mixing of the smelt with the weak wash is likely poor and that there would thus be a risk of smelt pooling.

Journal articles
Magazine articles
Open Access
Does the kappa number method accurately reflect lignin content in nonwood pulps?, TAPPI Journal November 2018

Does the kappa number method accurately reflect lignin content in nonwood pulps?, TAPPI Journal November 2018

Journal articles
Magazine articles
Open Access
Understanding the pulping and bleaching performances of eucalyptus woods affected by physiological disturbance, TAPPI Journal November 2018

Understanding the pulping and bleaching performances of eucalyptus woods affected by physiological disturbance, TAPPI Journal November 2018

Journal articles
Magazine articles
Open Access
A review of green liquor scale formation, TAPPI Journal October 2018

A review of green liquor scale formation, TAPPI Journal October 2018

Journal articles
Open Access
Characterization of kenaf by chemimechanical pulping, Solutions! & TAPPI JOURNAL, June 2003, Vol. 2(6) (418KB)

Characterization of kenaf by chemimechanical pulping, Solutions! & TAPPI JOURNAL, June 2003, Vol. 2(6) (418KB)

Journal articles
Open Access
The kraft pulping properties of Canadian red and sugar maple, Solutions! & TAPPI JOURNAL, June 2003, Vol. 2(6) (823KB)

The kraft pulping properties of Canadian red and sugar maple, Solutions! & TAPPI JOURNAL, June 2003, Vol. 2(6) (823KB)

Journal articles
Open Access
Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Journal articles
Open Access
A novel device to measure pulp fiber hydrodynamics, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (225KB)

A novel device to measure pulp fiber hydrodynamics, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (225KB)

Journal articles
Open Access
Monitoring the pH and conductivity of dielectric pulps using the ISO and IEC Standard Guidelines, TAPPI JOURNAL, March 2003, Vol. 2(3) (87KB)

Monitoring the pH and conductivity of dielectric pulps using the ISO and IEC Standard Guidelines, TAPPI JOURNAL, March 2003, Vol. 2(3) (87KB)

Journal articles
Open Access
Biodegradation of spent pulping liquor lignins under mesophilic and thermophilic anaerobic conditions, TAPPI JOURNAL, April 2003, Vol. 2(4) (178KB)

Biodegradation of spent pulping liquor lignins under mesophilic and thermophilic anaerobic conditions, Solutions! & TAPPI JOURNAL, April 2003, Vol. 2(4) (178KB)

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