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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.
Journal articles
Editorial: Honghi Tran: A Prolific TAPPI Journal, TAPPI JOUR
Editorial: Honghi Tran: A Prolific TAPPI Journal, TAPPI JOURNAL July 2016
Journal articles
Estimation of the S/G Ratios of the Lignins in Three Widely
Estimation of the S/G Ratios of the Lignins in Three Widely used North American Hardwoods, TAPPI JOURNAL July 2016
Journal articles
Evaluation of Near-Drum Thinning Data in Recovery Boiler Gen
Evaluation of Near-Drum Thinning Data in Recovery Boiler Generating Bank Tubes, TAPPI JOURNAL July 2016
Journal articles
A comparative study of enzymatic and Fenton pretreatment app
A comparative study of enzymatic and Fenton pretreatment applied to a birch kraft pulp used for MFC production in a pilot scale high-pressure homogenizer, TAPPI JOURNAL June 2016
Journal articles
Effects of cellulosic nanofibrils on papermaking properties
Effects of cellulosic nanofibrils on papermaking properties of fine papers, TAPPI JOURNAL June 2016
Journal articles
Editorial: 2015 Pulping, Engineering, Environmental
Editorial: 2015 Pulping, Engineering, Environmental, Recycling and Sustainability (PEERS): Sustainable Solutions for Our Future, TAPPI JOURNAL March 2016
Journal articles
Potential of C. citriodora wood species for kraft pulp
Potential of C. citriodora wood species for kraft pulp production, TAPPI JOURNAL March 2016
Journal articles
Formation of blue deposits in kraft recovery boilers
Formation of blue deposits in kraft recovery boilers, TAPPI JOURNAL March 2016
Journal articles
Magazine articles
Editorial: Kathleen Bennett: Opportunities for paper are pro
Editorial: Kathleen Bennett: Opportunities for paper are proliferating, TAPPI JOURNAL May 2016