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Reducing Moisture Transients in the Paper-Machine Drying Section with the Mid-ranging Control Technique

In English

Författare

Summary, in English

A new control strategy using feedback control has been developed for the multi-cylinder paper dryer configuration to reduce moisture transients in the drying section. The air system in the blow boxes was used to control the fast moisture transients in the paper machine. The new control system was combined with a previously developed physical model and was then compared with a conventional moisture control system. The comparison concerned the ability to restore the moisture ratio for two different dynamic changes, a moisture disturbance and a paper grade change. By combining the conventional steam control loop with an air loop, it was possible to significantly decrease the transient of the moisture disturbance.

Publiceringsår

2005

Språk

Engelska

Sidor

150-155

Publikation/Tidskrift/Serie

Nordic Pulp & Paper Research Journal

Volym

20

Issue

2

Dokumenttyp

Artikel i tidskrift

Förlag

Arbor Publishing AB

Ämne

  • Control Engineering
  • Chemical Engineering

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0283-2631