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Use of New Fiber Grades to Improve Quality and Costs, 1997 Recycling Symposium Proceedings
Use of New Fiber Grades to Improve Quality and Costs, 1997 Recycling Symposium Proceedings
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
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.
Alkaline Pulping IV - Dioxin: An Industry Overview, 1990 Pulping Conference Proceedings
Alkaline Pulping IV - Dioxin: An Industry Overview, 1990 Pulping Conference Proceedings
Improved Oxygen Delignification with Interstage Peroxymonosulfuric Acid Treatment. Part 2. Effect of Hydrogen Peroxide, 1994 Pulping Conference Proceedings
Improved Oxygen Delignification with Interstage Peroxymonosulfuric Acid Treatment. Part 2. Effect of Hydrogen Peroxide, 1994 Pulping Conference Proceedings
Ozone - Based ECF and TCF Bleaching: Mill Experience, Laboratory Data, and Cost Considerations, 1994 Pulping Conference Proceedings
Ozone - Based ECF and TCF Bleaching: Mill Experience, Laboratory Data, and Cost Considerations, 1994 Pulping Conference Proceedings
A New Method to Improve Soap Separation in Black Liquor by Adding Extracted Neutrals of Tall Oil, 2004 Engineering, Pulping, and PCE&I Conference
A New Method to Improve Soap Separation in Black Liquor by Adding Extracted Neutrals of Tall Oil, 2004 Engineering, Pulping, and PCE&I Conference
Slotted Headbox Screening for Fine, Publication and Newsprint Grades, 1990 Papermakers Conference Proceedings
Slotted Headbox Screening for Fine, Publication and Newsprint Grades, 1990 Papermakers Conference Proceedings
Distribution of Non-Process Elements in Pulp Mill and Bleach Plant Process Streams. 1. Calculating Precipitation of Inorganic Species, 1997 Minimum Effluent Mills Symposium Proceedings
Distribution of Non-Process Elements in Pulp Mill and Bleach Plant Process Streams. 1. Calculating Precipitation of Inorganic Species, 1997 Minimum Effluent Mills Symposium Proceedings