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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
Laboratory method for determining the source of brightness loss at a southern United States bleached paperboard mill, TAPPI Journal October 2018
Laboratory method for determining the source of brightness loss at a southern United States bleached paperboard mill, TAPPI Journal October 2018
Journal articles
Magazine articles
Online measurement of bulk, tensile, brightness, and ovendry content of bleached chemithermomechanical pulp using visible and near infrared spectroscopy, TAPPI JOURNAL April 2018
Online measurement of bulk, tensile, brightness, and ovendry content of bleached chemithermomechanical pulp using visible and near infrared spectroscopy, TAPPI JOURNAL April 2018
Journal articles
Magazine articles
Enzymatic treated viscose fibers functionalized by chitosan, TAPPI JOURNAL August 2018
Enzymatic treated viscose fibers functionalized by chitosan, TAPPI JOURNAL August 2018
Journal articles
Study of a model of cellulose depolymerization in the hypochlorite bleaching stage, TAPPI JOURNAL April 1988 88APR157
Study of a model of cellulose depolymerization in the hypochlorite bleaching stage, TAPPI JOURNAL April 1988
Journal articles
DTPMPA: polyamino polyphosphonic acid and its use in paper related processes-Part 2: paper production from silicate-free pulp bleached with DTPMPA as a stabilizer, TAPPI JOURNAL August 1988
DTPMPA: polyamino polyphosphonic acide and its use in paper related processes-Part 2: paper production from silicate-free pulp bleached with DTPMPA as a stabilizer, TAPPI JOURNAL August 1988
Journal articles
Acid-insoluble and acid-soluble lignin characteristics in kraft pulping of hybrid salix clones, TAPPI JOURNAL August 1988
Acid-insoluble and acid-soluble lignin characteristics in kraft pulping of hybrid salix clones, TAPPI JOURNAL August 1988
Journal articles
Nonwood fiber: Number 2, and trying harder-An interview with Dr. Joseph E. Atchison, TAPPI JOURNAL August 1988
Nonwood fiber: Number 2, and trying harder-An interview with Dr. Joseph E. Atchison, TAPPI JOURNAL August 1988
Journal articles
A wet-laid process for the preparation of random fiber-reinforced composites, TAPPI JOURNAL August 1988
A wet-laid process for the preparation of random fiber-reinforced composites, TAPPI JOURNAL August 1988
Journal articles
A fast-track approach through the design and permit phases for an ash landfill, TAPPI JOURNAL August 1988
A fast-track approach through the design and permit phases for an ash landfill, TAPPI JOURNAL August 1988