Requirements for bleaching control Pulp bleaching typically takes place in large plants, which consist of several continuous bleaching stages and washing stages between them. This kind of a multi-stage process needs two different kinds of control: Overall optimisation of the entire process that takes the production requirements, chemicals usage, together with energy and environmental factors
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Requirements for bleaching control
After reading this article you will..
- learn the requirements and challenges of pulp bleaching control.
Content
Process control and automation
- Introduction to process control and automation
- Development of process automation
- Fibre process automation
- Chemical recovery as a control object
- Advances in paper machine automation
- Paper machine as a dynamical system
- Tasks in paper machine control and management
- Control of stock flow concentration and quality
- Machine direction control
- Cross-directional control – The static optimisation
- Cross-directional control – Dynamics
- Cross-directional control – further aspects
- Controlling functional paper properties
- Managing grade chances in the paper machine
- Managing disturbances caused by broke and recovered solids
- Millwide systems
- Modelling and control methods
Authors & references
Authors:
Professor Emeritus Kauko Leiviskä, University of Oulu
Videos
Exercises
This page has been updated 09.06.2020
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