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Conference papers
Assessment of the Mixing Efficiency of HC Mixers in High-Consistency Bleach Plants, 2002 Fall Technical Conference

Assessment of the Mixing Efficiency of HC Mixers in High-Consistency Bleach Plants, 2002 Fall Technical Conference

Conference papers
Control of Soluble Scale in Black Liquor Evaporators and Concentrators Part 2: Interpretation of Crystallization Results, 2002 Fall Technical Conference

Control of Soluble Scale in Black Liquor Evaporators and Concentrators Part 2: Interpretation of Crystallization Results, 2002 Fall Technical Conference

Conference papers
Best Operational Procedures â?? White Liquor Plant â?? Aracruz Mill Experience, 2004 International Chemical Recovery Conference

Best Operational Procedures – White Liquor Plant – Aracruz Mill Experience, 2004 International Chemical Recovery Conference

Conference papers
Near Infrared Spectroscopy for Online White and Black Liquor Composition Analysis, 1999 Pulping Conference Proceedings

Near Infrared Spectroscopy for Online White and Black Liquor Composition Analysis, 1999 Pulping Conference Proceedings

Conference papers
Evaluation of Fungi for Bio-Kraft Pulping of Softwood, 2000 Pulping / Process & Product Quality Conference Proceedings

Evaluation of Fungi for Bio-Kraft Pulping of Softwood, 2000 Pulping / Process & Product Quality Conference Proceedings

Conference papers
Application of a Non-Scanning Wet End Weight Measurement Array, 1998 Process & Product Quality Conference Proceedings

Application of a Non-Scanning Wet End Weight Measurement Array, 1998 Process & Product Quality Conference Proceedings

Conference papers
Modern Non-Wood Pulp Mill - Process Concepts and Economic Aspects, 1998 North America Nonwood Fiber Symposium Proceedings

Modern Non-Wood Pulp Mill - Process Concepts and Economic Aspects, 1998 North America Nonwood Fiber Symposium Proceedings

Conference papers
Open Access
Recent advances in the commercialization of NIR (near-infrar

ABSTRACT: Near-infrared (NIR) spectroscopy techniques have held the promise of a new generation of online and lab based process analyzers for the pulping and recovery areas for some years now. NIR technology has been shown to be a quite effective method for the analysis of white, green and black liquors by multiple investigators. NIR reflectance techniques have been shown to be effective in predicting yield and kappa number in pulp samples. Recently, commercial analyzers have been developed for green liquor analysis on the dissolving tank, white and green liquor analysis in the recaust area and black liquor analysis on batch and continuous digesters. These analyzers are currently running at different mill sites and are proving to be superior to current technology choices for these applications. A commercial online and lab based yield and kappa number analyzer are currently being developed based on NIR reflectance techniques. Results will be presented on the performance of these analyzers relating to accuracy, maintenance and total installed cost. Other potential NIR applications in the pulping and recovery area will also be addressed.