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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 Portuguese
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Kraft Pulping Series (Details)Includes 12 courses for $499/year. Pulping Library (Details)Includes 72 courses for $1,499/year.
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Training Time: 32 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese
Part of the industrial process used to convert wood chips into pulp for use in paper and other cellulosic products, is the kraft pulping process. During the pulping process the wood components are released from the wood or converted into the useful by-products of methanol, turpentine, and tall oil. This module describes where the by-products come from, how they are recovered, and the equipment used to recover them.
At the end of this module, you will be able to:
The following key questions are answered in this module:
What is the chemical term for the reaction of resin and fatty acids with alkaline cooking liquor to create soap?Conversion of fatty acids to soap by alkaline materials is called saponification.
Where does most of the soap in the black liquor separate from the black liquor?Soap is collected from the tops of brown stock washer filtrate tanks and from evaporator skim tanks.
How is methanol which is dissolved in condensate separated from the condensate?Methanol can be effectively separated from water by passing the mixture through a steam stripper.
How is turpentine which is mixed with condensate separated from that condensate?Water and turpentine are immiscible and have different densities, so they can be separated by letting a mixture spend time in a decanter vessel.
What is tall oil used for?Tall oil is used to produce rosin that gives paper strength and water repellency. It can also be used in the production adhesives, rubber, and inks.
Below is a transcript of the video sample provided for this module:
Batch Cooking Introduction
View Course
Black Liquor Evaporators - Equipment
Brown Stock Screening
Continuous Cooking Introduction
Kraft Pulping Liquor Chemistry
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