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Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.
Language: English French Portuguese
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Bleaching Series (Details)Includes 11 courses for $499/year. Pulping Library (Details)Includes 72 courses for $1,499/year.
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Training Time: 17 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, French
Hydrogen peroxide is a unique bleaching chemical with many applications in the bleach plant. Other bleaching chemicals have specific uses and requirements, but peroxide can be used for delignification or brightening and it doesn't require any special equipment. Peroxide is often used to reinforce extraction stages in elemental chlorine free (ECF) bleaching sequences. Peroxide use is essential to reaching the target brightness in total chlorine free (TCF) bleaching sequences. This course focuses on peroxide bleaching of chemical pulp, but peroxide is also used extensively for mechanical pulp bleaching.
Bleaching Basics
View Course
Bleaching Equipment
Bleaching Sequences and Filtrate Recycling
Chlorine Dioxide Bleaching
Ozone Bleaching
The following key questions are answered in this module:
What are the advantages of hydrogen peroxide bleaching?Peroxide is easy to use because it doesn't require special equipment and can be used in almost any bleaching stage. Using peroxide reducing the bleaching cost and environmental impact.
How is peroxide used to bleach pulp?Peroxide can be added to an extraction stage or used alone. It can even be added to pulp storage towers to increase brightness.
Can adding peroxide to a high density storage chest increase the brightness?Yes, with the right conditions, a small amount of peroxide can increase the brightness 2-3 points.
Does pressure help peroxide bleaching?Pressurizing a peroxide bleaching stage can improve the results.
Is the peroxide used for bleaching the same as the little brown bottle in my medicine cabinet?It is 15-25 times more concentrated so it can cause severe chemical burns.
Below is a transcript of the video sample provided for this module:
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