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Language: English French Polish Portuguese Russian
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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: 21 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, French, Polish, Russian
Chlorine dioxide is an excellent bleaching chemical because it is very selective for lignin. Because of this, its use has expanded greatly over the last few decades. This course discusses how chlorine dioxide is generated at a pulp mill along with the different processes that utilize chlorine dioxide at a pulp mill.
Chlorine Dioxide Awareness
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Bleaching Basics
Bleaching Equipment
Chlorine Dioxide Bleaching
Chlorine Dioxide Generation Chemical Safety and Environmental Awareness
The following key questions are answered in this module:
Why is chlorine dioxide generated on-site? Chlorine dioxide gas is very unstable, so it cannot be transported in high concentrations. It is stored at about 1% on-site.
How is chlorine dioxide gas created?Chlorine dioxide gas is created by the reduction of sodium chlorate in a strong acid solution.
What is the main chlorine dioxide generation process in use today?The two main processes are called R8 and SVP-LITE. They both operate under vacuum conditions and use methanol as a reducing agent.
What are the main pieces of equipment for chlorine dioxide generation?There are several pieces of equipment in the R8/SVP-LITE process: a circulation pump, generator, reboiler, salt cake filter, condenser, absorption tower, and a vent gas scrubber.
What is a puff?A puff is an explosion that occurs when chlorine dioxide gas decomposes. The severity is proportional to the concentration of chlorine dioxide gas in air.
Below is a transcript of the video sample provided for this module:
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