Thin Stock System Design

SKU: C-696Duration: 29 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

Great for in-person classroom training or as an alternative to DVD.

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

Language:  English

Ideal for corporate licensing and volume users who also need administrative tracking and reporting on training.

Get this interactive eLearning course into your LMS or learn how you can leverage our LMS to deliver training to your workforce.

Need multiple courses or have lots of users? Just let us know a little more about what you need and we’ll get you some great volume pricing.

 Need help deciding? Compare delivery formats.

Course Details

Specs

Training Time: 29 minutes

Compatibility: Desktop, Tablet, Phone

Based on: Industry Standards and Best Practices

Languages: English

The thin stock system is responsible for supplying clean, dilute stock to the headbox of a paper or board machine. The thin stock system uses white water to dilute the stock to the proper consistency for cleaning, screening, and delivery to the headbox. This module will list the objectives of a thin stock system and identify how each objective is satisfied.

Learning Objectives

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

  • Identify and describe safety hazards and safety guidelines for thin stock systems
  • List the objectives of a thin stock system and identify how each objective is satisfied
  • Explain the purpose of "cascaded" cleaning systems
  • Identify and describe key equipment
  • Identify and describe primary process flows
  • Describe the operation of centrifugal cleaners
  • Identify where chemical additives are typically added to thin stock
  • Describe how consistency is controlled in a thin stock system
  • List the objectives of thin stock screening
  • Describe operation of pulsation dampening equipment

Key Questions

The following key questions are answered in this module:

Why do thin stock cleaning and screening systems often use multiple stages?
The later stages are used to recover the fibers in the rejects from the first stage. This minimizes fiber losses and improves the overall efficiency of the system.

What is the difference between a forward cleaner and a reverse cleaner?
In both types, the denser components exit from the bottom and lighter components from the top. Forward cleaners remove small dense contaminants, so the fibers exit from the top. Reverse cleaners remove lightweight contaminants, so the fibers exit from the bottom.

Why are fan pumps usually double suction pumps instead of centrifugal pumps?
Fan pumps are typically double suction pumps with low-pulse impellers to minimize pressure pulsations in the stock going to the headbox, which can occur with regular centrifugal pumps.

What is the difference between cleaners and screens?
Cleaners remove small contaminants based on density differences with fibers, while screens remove larger contaminants based on size differences with fibers.

What is the purpose of the attenuator in a thin stock system?
Attenuators use air pads to remove any remaining pressure pulsations in the stock flow to the headbox, which is especially important for hydraulic headboxes.

Sample Video Transcript

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

The Thick Stock System or Stock Preparation System is responsible for delivering the proper amount of thick stock to the Thin Stock System. The Thin Stock System uses white water to dilute the stock to the proper consistency for cleaning, screening, and delivery to the headbox. The Thin Stock System can include one or more of these process steps. Arranged roughly in this order. Centrifugal cleaners to remove small dense contaminants from the stock. Deaerating equipment to remove air from the thin stock. Screens to remove contaminants that are larger than pulp fibers. And pulsation dampening equipment to remove any pressure pulsations in the stock flow to the headbox.

Customer Q&A

Ask a Question

Sorry, we're missing some information

I would like to have several employees take multiple courses. How can I set that up?

We're in the process of making bulk course and multiple user purchases easier. But for now, you can order multiple courses and contact us with details on who you'd like to assign courses to. We can set up each user's training plan and make sure everyone gets the eLearning assignments they need.

Can I get a free full-length preview of a course to see what this course covers?

While we do our best to offer details on course contents, we don't normally offer full-length previews. But please contact us with more details for a better understanding of what your organizaton needs and how we can help.

Do I get a certificate when I complete a course?

Yes. All of our courses allow you to print a completion certficate upon successfully passing the integrated test at the end of each eLearning course.

How do I log in to take a course that I have already paid for?

You'll receive an email with login details moments after you purchase your pay-per-view (PPV) course. Just click the login link and enter the user name and password provided.

Do you have courses in different languages?

Yes. While all of our courses are originally produced in English, we develop many courses in a growing number of languages, including Chinese, Dutch, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Tamil, and Thai. Available languages are normally displayed in the Course Details section on each course page.
Added to Cart! Click here to view your cart.