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Journal articles
Magazine articles
ASPI News, Paper360º November/December 2019

ASPI News, Paper360º November/December 2019

Journal articles
Magazine articles
Open Access
The solubility of calcium carbonate in green liquor handling systems, TAPPI Journal October 2019

ABSTRACT: The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

Conference papers
Biodegradable Paper-based Coffee Cups: Current Progress and Outlook, 19Papercon

Biodegradable Paper-based Coffee Cups: Current Progress and Outlook, 19Papercon

Conference papers
New generation of white surface containerboard enabled by novel pigments featuring excellent printability in flexo printing and inkjet marking, 19PaperCon

New generation of white surface containerboard enabled by novel pigments featuring excellent printability in flexo printing and inkjet marking, 19PaperCon

Conference papers
Plastic free, easily recyclable paper cups are available, 19PaperCon

Plastic free, easily recyclable paper cups are available, 19PaperCon

Conference papers
Surface application of cellulose microfibrils on paper • Effects of basis weight and surface coverage levels, 19PaperCon

Surface application of cellulose microfibrils on paper • Effects of basis weight and surface coverage levels, 19PaperCon

Conference papers
Alias Impact on Control Profiles, 19PaperCon

Alias Impact on Control Profiles, 19PaperCon

Conference papers
Continuous Cross Machine Formation by Wavelet Transform Analysis, 19PaperCon

Continuous Cross Machine Formation by Wavelet Transform Analysis, 19PaperCon

Conference papers
Real-time Paper and Paperboard Quality Analysis and Classification based on Paper Formation or Surface Appearance in Web Inspection System, 19PaperCon

Real-time Paper and Paperboard Quality Analysis and Classification based on Paper Formation or Surface Appearance in Web Inspection System, 19PaperCon

Conference papers
New machine vision applications for the paper industry, 19PaperCon

New machine vision applications for the paper industry, 19PaperCon

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