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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
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
An Assessment of Gasification-Based Biorefining at Kraft Pulp and Paper Mills in the United States, Part A: Background and Assumptions, TAPPI JOURNAL November 2008
An Assessment of Gasification-Based Biorefining at Kraft Pulp and Paper Mills in the United States, Part A: Background and Assumptions, TAPPI JOURNAL November 2008
Journal articles
Tailoring Softwood Kraft Pulp Properties by Fractionation and Refining, TAPPI JOURNAL November 2008
Tailoring Softwood Kraft Pulp Properties by Fractionation and Refining, TAPPI JOURNAL November 2008
Journal articles
Toward Predicting the Char Bed Shape in Kraft Recovery Boilers, TAPPI JOURNAL October 2008
Toward Predicting the Char Bed Shape in Kraft Recovery Boilers, TAPPI JOURNAL October 2008
Journal articles
Improvement of the Fiber-Bonding Capacity of Unbleached Recycled Pulp by the Laccase/Mediator Treatment, TAPPI JOURNAL October 2008
Improvement of the Fiber-Bonding Capacity of Unbleached Recycled Pulp by the Laccase/Mediator Treatment, TAPPI JOURNAL October 2008
Journal articles
Black Liquor Spraying Experiments With Six Splashplate Nozzles in Two Recovery Boilers, TAPPI JOURNAL October 2008
Black Liquor Spraying Experiments With Six Splashplate Nozzles in Two Recovery Boilers, TAPPI JOURNAL October 2008
Journal articles
Refiner bleaching with magnesium hydroxide (Mg(OH)2) and hydrogen peroxide, TAPPI JOURNAL September 2008
Refiner bleaching with magnesium hydroxide (Mg(OH)2) and hydrogen peroxide, TAPPI JOURNAL September 2008
Journal articles
Kinetic models for all chlorine dioxide and extraction stages in full ECF bleaching sequences of softwoods and hardwoods, TAPPI JOURNAL November 2009
Kinetic models for all chlorine dioxide and extraction stages in full ECF bleaching sequences of softwoods and hardwoods, TAPPI JOURNAL November 2009
Journal articles
Fiber Trapping in Low-Consistency Refining: New Parameters to Describe the Refining Process, TAPPI JOURNAL October 2009
Fiber Trapping in Low-Consistency Refining: New Parameters to Describe the Refining Process, TAPPI JOURNAL October 2009