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Understanding the risks and rewards of using 50% vs. 10% strength peroxide in pulp bleach plants, TAPPI Journal November 2018
Authors: Alan W. Rudie and Peter W. Hart | ABSTRACT: The use of 50% concentration and 10% concentration hydrogen peroxide were evaluated for chemical and mechanical pulp bleach plants at storage and at point of use. Several dangerous occurrences have been documented when the supply of 50% peroxide going into the pulping process was not stopped during a process failure. Startup conditions and leaking block valves during maintenance outages have also contributed to explosions. Although hazardous events have occurred, 50% peroxide can be stored safely with proper precautions and engineering controls. For point of use in a chemical bleach plant, it is recommended to dilute the peroxide to 10% prior to application, because risk does not outweigh the benefit. For point of use in a mechanical bleach plant, it is recommended to use 50% peroxide going into a bleach liquor mixing system that includes the other chemicals used to maintain the brightening reaction rate. When 50% peroxide is used, it is critical that proper engineering controls are used to mitigate any risks.
Journal articles
Magazine articles
Using multistage models to evaluate how pulp washing after the first extraction stage impacts elemental chlorine-free bleach demand, TAPPI Journal November 2018
Using multistage models to evaluate how pulp washing after the first extraction stage impacts elemental chlorine-free bleach demand, TAPPI Journal November 2018
Magazine articles
Editor's Note: Monstrous marvels, TAPPI JOURNAL September 20
Editor's Note: Monstrous marvels, TAPPI JOURNAL September 2010
Magazine articles
Editorial: Mentoring For the Future, TAPPI JOURNAL February
Editorial: Mentoring For the Future, TAPPI JOURNAL February 2011
Magazine articles
Editor's Note: Bill Fuller's TAPPI JOURNAL Enthusiasm, TAPPI
Editor's Note: Bill Fuller's TAPPI JOURNAL Enthusiasm, TAPPI JOURNAL July 2011
Magazine articles
Editor's Note: TAPPI JOURNAL's Best Paper for 2010, TAPPI JO
Editor's Note: TAPPI JOURNAL's Best Paper for 2010, TAPPI JOURNAL March 2011
Journal articles
Magazine articles
Oil absorption and desorption by polypropylene fibers, TAPPI
Oil absorption and desorption by polypropylene fibers, TAPPI JOURNAL September 2017
Journal articles
Magazine articles
Three-dimensional pore structure visualization and character
Three-dimensional pore structure visualization and characterization of paper using X-ray computed tomography, TAPPI JOURNAL September 2017
Journal articles
Magazine articles
Effect of surface treatment with biodegradable materials on
Effect of surface treatment with biodegradable materials on properties of linerboard made from old corrugated containers (OCC), TAPPI Journal September 2017
Journal articles
Magazine articles
Editorial: Shifts and gains in research funding, TAPPI JOURNAL April 2018
Editorial: Shifts and gains in research funding, TAPPI JOURNAL April 2018