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Language: English Polish Portuguese Russian
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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: 28 minutes
Compatibility: Desktop, Tablet, Phone
Based on: Industry Standards and Best Practices
Languages: English, Portuguese, Polish, Russian
Batch cooking is an industrial chemical process used to convert wood chips to pulp fibers that can be used to make paper and other cellulose fiber-based products. This module provides background on wood fibers and chemical pulping, and then provides specifics about the batch cooking process. It also discusses the impact of several important batch cooking variables on pulp quality.
At the end of this module, you will be able to:
The following key questions are answered in this module:
What the three primary organic components of wood?Wood is made up of cellulose, hemicellulose, and lignin.
In a batch digester, what goes into a ""batch""?Wood chips, cooking liquor and steam are combined in a pressure vessel for each batch, or cook.
At the end of cook, how is a batch digester emptied?At the end of cook, the pressure of the steam in digester pushes the cooked pulp out of the digester.
What factors affect how well the chips is a digester are cooked?There are many factors which affect the cooking the chips, among the more important are: the type of wood, the strength and amount of cooking liquor, the rate of temperature increase, the final cook temperature and the time spent at temperature.
When a batch digester is emptied, what happens to blow steam?The blow steam flows through condensers which recovery some of the energy of the steam and also capture some of the volatile byproducts of the cooking process.
Below is a transcript of the video sample provided for this module:
Blow Line Refining Operation
View Course
Brown Stock System Basics
Brown Stock Washing
Continuous Cooking Introduction
Continuous Digesters - Hydraulic
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