Centrifugal Cleaners - Tissue

SKU: C-860Duration: 28 Minutes Certificate Included

Pay-per-view (PPV) format perfect for individual users.

Get immediate access to this interactive eLearning course online. Must be used within 30 days, expires 48 hours after launch.

Language:  English

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Includes printable documents and Convergence Video Player for Windows systems. Content expires after 1 year.

Language:  English

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Course Details

Specs

Training Time: 28 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

This course describes the purpose, design, and operation of centrifugal cleaners installed in tissue machine thin stock systems. The effect of pressure drop, feed consistency, and reject rate on cleaner efficiency is covered, followed by a discussion on the set up and operation of a typical cascade cleaner system.

Learning Objectives

At the end of this module, you will be able to:

  • Describe the purpose of centrifugal cleaners
  • Describe the design and operation of forward cleaners
  • Describe the benefits of cascaded cleaning systems
  • Describe the design and operation reverse and dual cleaners
  • Describe factors that affect cleaner efficiency
  • Describe the effect that cone size has on cleaning

Key Questions

The following key questions are answered in this module:

What is the purpose of cleaners?
Centrifugal cleaners are used to remove contaminants and protect downstream equipment from damage and wear.

What are forward cleaners?
Forward cleaners separate heavy particles from pulp by centrifugal force.

What is a cascade cleaner system?
Rejects from a set of cleaners often contain good fiber. In a cascade system, additional stages are used to process the Primary stage rejects and recover the fibers.

What are reverse cleaners?
Reverse cleaners separate lightweight contaminants from fibers. Lightweight contaminants include wax, plastic, and other stickies.

Why is pressure drop important for cleaning efficiency?
If the pressure drop is too low, the stock will rotate too slowly inside the cones and contaminant removal will suffer. If the pressure drop is too high, the stock will pass too quickly through the cones.

Sample Video Transcript

Below is a transcript of the video sample provided for this module:

Through-flow cleaners also remove lightweight rejects like waxes and plastics, but the accepts and rejects both exit from the bottoms of the cones. Through-flow cleaners work on the same basic principle as the reverse cleaners. The fibers move towards the walls, and lightweight contaminates move to the center. In through-flow cleaners however, the light weight rejects are removed from the center bottom of the cleaner through a tube, and the accepts are removed from an opening in the wall near the bottom of the cone.

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