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Conference papers
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.
Journal articles
Anthraquinone pulping of kudzu (pueraria lobata), TAPPI Journal December 2024
Authors: Peter W. Hart, Brian N. Brogdon, and Jeffrey S. Hsieh | TAPPI J. 76(4): 162(1993) - ABSTRACT: Kudzu was pulped underpulping conditions for kraft, kraft-AQ, soda, and soda-AQ processes. Anthraquinone addition increlased the carbohydrate content of the brownstock pulp for all cooks. Anthraquinone addition lowered the broumrtock kappa number while reducing the chemical demand. Brownstock ~om selected pulping sequences was tested to determine tear strength, tensile strength, burst strength, and~eeness. The broumstock was also subjected to a CED bleaching sequence. For the bleached pulps, viscosity and average fiber length were determined.
Journal articles
Shop talk: troubleshooting moisture profile problems in the cross-machine direction, TAPPI JOURNAL, July 2000, Vol. 83(7)
Shop talk: troubleshooting moisture profile problems in the cross-machine direction, TAPPI JOURNAL, July 2000, Vol. 83(7)
Journal articles
Wood and fiber properties of hybrid poplars from southern british columbia, TAPPI JOURNAL, July 2000, Vol. 83(7)
Wood and fiber properties of hybrid poplars from southern british columbia, TAPPI JOURNAL, July 2000, Vol. 83(7)
Journal articles
Methanol formation during alkaline wood pulping, TAPPI JOURNAL, July 2000, Vol. 83(7)
Methanol formation during alkaline wood pulping, TAPPI JOURNAL, July 2000, Vol. 83(7)
Journal articles
A new approach to mechanical pulping â?? pretreatment of chips by normal-to-grain compression prior to refining, TAPPI JOURNAL, September 2000, Vol. 83(9)
A new approach to mechanical pulping — pretreatment of chips by normal-to-grain compression prior to refining, TAPPI JOURNAL, September 2000, Vol. 83(9)
Journal articles
Impact of the cluster rule on the cost competitiveness of the u.s. papermaking industry in the global market, TAPPI JOURNAL, September 2000, Vol. 83(9)
Impact of the cluster rule on the cost competitiveness of the u.s. papermaking industry in the global market, TAPPI JOURNAL, September 2000, Vol. 83(9)
Journal articles
Improved ozone efficiency at reduced charges -- an electrochemical model and new experimental approach, TAPPI JOURNAL, September 2000, Vol. 83(9)
Improved ozone efficiency at reduced charges -- an electrochemical model and new experimental approach, TAPPI JOURNAL, September 2000, Vol. 83(9)
Journal articles
Viscosity control - a new way to improve pressure screen performance, TAPPI JOURNAL, September 2000, Vol. 83(9)
Viscosity control - a new way to improve pressure screen performance, TAPPI JOURNAL, September 2000, Vol. 83(9)
Journal articles
89APR177
MD microstriations in paper: a two-sided shrinkage phenomenon?, TAPPI JOURNAL April 1989