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Showing result 1 - 5 of 54 swedish dissertations matching the above criteria.

  2. 1. Xylan Reactions in Kraft Cooking : Process and Product Considerations

    Author : Sverker Danielsson; Mikael Lindström; Richard Gustafson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Xylan; Kraft cooking; Paper strength; Sheet density; Methylglucuronic acid; Hexenuronic acid; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Abstract : Xylan is the main hemicellulose in birch, eucalyptus, and most other hardwood species. During kraft pulping a series of chemical reactions and physical processes involving xylan takes place. READ MORE

  4. 2. Further insights into kraft cooking kinetics

    Author : Johannes Bogren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delignification; Donnan equilibrium; Memory effects; Hexenuronic acid; Hofmeister effects; Modelling; Kraft cooking; Ionic effects; Reaction kinetics;

    Abstract : .... READ MORE

  5. 3. Modified kraft pulping

    Author : Peter Sandström; KTH; []
    Keywords : Delignification; Kraft cooking; Selectivity; Softwood;

    Abstract : .... READ MORE

  6. 4. Carbohydrate degradation and dissolution during Kraft cooking : Modelling of kinetic results

    Author : Dan Johansson; Ulf Germgård; Pedro Fardim; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kraft cooking; softwood; hardwood; cellulose; xylan; glucomannan; degradation; dissolution; Chemical engineering; Kemiteknik; Chemical Engineering; Kemiteknik;

    Abstract : Chemical pulp fibres from wood are commonly used in products associated with packaging as well as with printing and writing. The prevalent way of liberating fibres is by subjecting wood chips to Kraft cooking. This process has a history of almost 130 years and should be both well described and well established. READ MORE

  7. 5. Extraction of Lignin from Kraft Cooking Liquor by Ultrafiltration

    Author : Ola Wallberg; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignin; Chemical technology and engineering; cooking liquor; kraft black liquor; Kemiteknik och kemisk teknologi; Ultrafiltration;

    Abstract : Lignin is a potential biofuel which can be extracted from kraft cooking liquor. Lignin can also prove valuable as a speciality chemical. By extracting lignin potential economical revenue can be gained by pulp mills, as well as technical benefits such as easier delignification and bleaching. READ MORE