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Journal articles
Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier,TAPPI Journal December 2024
Author: Peter W. Hart | TAPPI J. 10(9): 37(2011) - ABSTRACT: A modified kraft pulping process has been developed that successfully breaks the traditional hard-wood kraft pulp yield barrier. The process produces fully bleached, high brightness hardwood kraft pulp with a yield of greater than 53% on wood. Details of the development and processing steps, along with various recovery cycle impacts, are discussed.
Journal articles
Hydrogen peroxide and caustic soda: Dancing with a dragon while bleaching,TAPPI Journal December 2024
Peter W. Hart, Carl Houtman, and Kilby Hirth | TAPPI J. 12(7): 59(2013) - ABSTRACT: When hydrogen peroxide is mixed with caustic soda, an auto-accelerating reaction can lead to generation of significant amounts of heat and oxygen. On the basis of experiments using typical pulp mill process concentration and temperatures, a relatively simple kinetic model has been developed. Evaluation of these model results reveals that hydrogen peroxide-caustic soda systems are extremely sensitive to hydrogen peroxide:caustic soda ratio, transition metal contamination, and temperature. Small changes in initial conditions can result in a closed system becoming explosive. Analysis of model results was used to develop guidelines for safer application of hydrogen peroxide in a mill setting.
Journal articles
Guest Editorial: TAPPI Journal showcases the best of PEERS 2012, TAPPI JOURNAL July 2013
Guest Editorial: TAPPI Journal showcases the best of PEERS 2012, TAPPI JOURNAL July 2013
Journal articles
Impact of lignin and carbohydrate chemical structures on kraft pulping processes and biofuel production, TAPPI JOURNAL July 2013
Impact of lignin and carbohydrate chemical structures on kraft pulping processes and biofuel production, TAPPI JOURNAL July 2013
Journal articles
Formation of pirssonite in green liquor handling systems, TAPPI JOURNAL July 2013
Formation of pirssonite in green liquor handling systems, TAPPI JOURNAL July 2013
Journal articles
Performance of alternate superheater materials in a potassium-rich recovery boiler environment, TAPPI JOURNAL July 2013
Performance of alternate superheater materials in a potassium-rich recovery boiler environment, TAPPI JOURNAL July 2013
Journal articles
Hydrogen peroxide and caustic soda: Dancing with a dragon while bleaching, TAPPI JOURNAL July 2013
Authors: Peter W. Hart; Carl Houtman; and Kilby Hirth | ABSTRACT: When hydrogen peroxide is mixed with caustic soda, an auto-accelerating reaction can lead to generation of significant amounts of heat and oxygen. On the basis of experiments using typical pulp mill process concentration and temperatures, a relatively simple kinetic model has been developed. Evaluation of these model results reveals that hydrogen peroxide-caustic soda systems are extremely sensitive to hydrogen peroxide:caustic soda ratio, transition metal contamination, and temperature. Small changes in initial conditions can result in a closed system becoming explosive. Analysis of model results was used to develop guidelines for safer application of hydrogen peroxide in a mill setting.
Journal articles
Effects of flashing on spray characteristics of splashplate nozzles, TAPPI JOURNAL May 2013
Effects of flashing on spray characteristics of splashplate nozzles, TAPPI JOURNAL May 2013
Journal articles
Removal of silicon from green liquor with carbon dioxide in the chemical recovery process of wheat straw soda pulping, TAPPI JOURNAL March 2013
Removal of silicon from green liquor with carbon dioxide in the chemical recovery process of wheat straw soda pulping, TAPPI JOURNAL March 2013
Journal articles
A theoretical study of vacuum force on gravity foils and step foils, TAPPI JOURNAL, November 1999, Vol. 82(11)
A theoretical study of vacuum force on gravity foils and step foils, TAPPI JOURNAL, November 1999, Vol. 82(11)