Startseite Influence of chip presteaming conditions on kraft pulp composition and properties
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Influence of chip presteaming conditions on kraft pulp composition and properties

  • Marie Bäckström , Anna Jensen und Elisabet Brännvall ORCID logo EMAIL logo
Veröffentlicht/Copyright: 17. September 2015
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Abstract

Presteaming is a well-established technique in pulp mills, which improves cooking liquor impregnation by removing air from within and between chips. The aim of the study was to investigate how conditions during steaming affect the subsequent kraft cook and properties of the obtained pulp. It was found that higher pressure and temperature during chip presteaming led to increased degradation and dissolution of hemicelluloses. Lower refinability and tensile index was obtained for pulps cooked after presteaming at high pressure and for a long time.


Corresponding author: Elisabet Brännvall, Fibre and Polymer Technology, Royal Institute of Technology, KTH, SE-100 44 Stockholm, Sweden, e-mail: .

Acknowledgments

The companies part of the Innventia Program Area Liner and Kraft Paper are acknowledged for their financial support.

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Received: 2015-5-5
Accepted: 2015-8-24
Published Online: 2015-9-17
Published in Print: 2016-5-1

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