Paper/Board

Stock approach flow

11 Courses / 4 hours

4 Total hours
11 Courses
Available languages : French, English & Spanish
Compatible with : computer, tablet & telephone
Internet access requested
Unlimited access for a year
Log in informations sent within 48hours

Objectives

To identify and explain the equipment from the machine tank to the headbox including water recirculation
To manage basis weight, purifiers, dilution and water recirculation
To master the refining management according to the quality required for the paper

Target audience

Operators (from new to experimented), technicians and new comers engineers working in Paper/Board Industries
Technicians and new comers engineers working in related domain of Paper/Board Industries

List of courses

Process overview (15mins)

- Goal of the stock approach flow
- The different equipments of the stock approach flow

Storage tanks (20mins)

- Goal
- Process agitation impact
- Tank autonomy

Broke Handling (5mins)

- Broke pulper
- The different types of broke
- Broke management

Machine refining (25mins)

- Goal of machine refining
- Review of the effect of refining on fibres
- Specific energy and control settings

Basis weight control (25mins)

- Level box and variable speed pump
- Basis weight valve
- Basis weight process control

First dilution (10mins)

- Single or double dilutions
- The consistencies
- Impact on process and quality

Cleaning (35mins)

- Equipment description and function
- Centrifugal force principle
- The different configurations
- Process settings

Deculator (35mins)

- Goal of the deculator
- Desaeration
- Pressure/Temperature ratio and vacuum management
- Equipment principle
- Process settings

Second dilution (35mins)

- Goal of the second dilution
- Dilution notions
- Dilution principle
- The fan pump
- Dilution control loop

Screening (25mins)

- Goal and principle of the screens
- The different types of screens
- Contaminants geometry and removal
- The different configurations
- Process settings