Sökning: "cooking liquor"

Visar resultat 11 - 15 av 32 avhandlingar innehållade orden cooking liquor.

  1. 11. Large scale experiments and modeling of black liquor gasification

    Författare :Per Carlsson; Mikko Hupa; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy Engineering; Energiteknik;

    Sammanfattning : Biomass gasification could provide a basis for increased electricity and engine fuel production from a renewable source in the pulp and paper industry. This work focuses on the largest byproduct available at the pulp mills, black liquor. LÄS MER

  3. 12. Some aspects on the effects of dissolved wood components in kraft pulping

    Författare :Ragnar Sjödahl; Mikael E. Lindström; Hasan Jameel; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Delignification; Dissolved wood components; Black liquor; Defibration point; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : During kraft cooking a significant part of the wood material, especially lignin and hemicelluloses, is degraded and dissolved in the cooking liquor, rendering a broad range of degradation products with different molecular mass and functional groups. The main part of this thesis has been devoted to clarify the role of these dissolved wood components (DWC) during kraft cooking. LÄS MER

  4. 13. The Use of Lignin Derivatives to Improve Selected Paper Properties

    Författare :Stefan Antonsson; Mikael E. Lindström; Gunnar Henriksson; Mats Johansson; Docent Roland Agnemo Tek. Dr. Harald Brelid; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; kraft lignin; black liquor; cross-flow filtration; lignin derivative; kraftliner; oxidative coupling; laccase; manganese; linseed oil; mechano-sorptive creep; kraftlignin; svartlut; tvärsflödesfiltrering; ligninderivat; kraftliner; oxidativ koppling; lackas; mangan; linolja; mekanosorptivt kryp; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : Ved består huvudsakligen av tre typer av polymerer, cellulosa, hemicellulosa och lignin. Lignin bildas i naturen genom enzymatiskt initierad oxidativ koppling av tre olika typer av fenylpropan-enheter. Dessa bygger genom olika kol-kol- och kol-syre-bindningar upp en amorf tredimensionell polymer. LÄS MER

  5. 14. Interfacing spectrophotometry to process liquors applications to kraft pulping

    Författare :Xiaotian Yang; KTH; []
    Nyckelord :Kraft cooking; On-line; Sulfide; Lignin; Polysulfide excess sulfur; Anthraquinone-2-sulfonate; Anthraquinone; Nafion membrane; UV-Vis; ATR-probe; Spectrophotometric;

    Sammanfattning : This thesis summarizes the outcome of work performed withthe objective to contribute to the knowledge and development ofthe kraft cooking process using spectrophotometricinterfaces.In kraft cooking, it is desirable to maximize the removal oflignin in the cook without loss of pulp strength. LÄS MER

  7. 15. Isoconversional analysis for the prediction of mass-loss rates during pyrolysis of biomass

    Författare :Lina Norberg Samuelsson; Matthaus Babler; Rosana Moriana; Henrik Wiinikka; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; pyrolysis; biomass; kinetics; cellulose; spruce; black-liquor; model-free; isoconversional; prediction; pyrolys; biomassa; kinetik; cellulosa; gran; svartlut; model-free; isoconversional; förutsägelse; Chemical Engineering; Kemiteknik; Energy Technology; Energiteknik;

    Sammanfattning : Biomass is the only renewable carbon source that can compete with fossil energy sources in terms of production of materials, chemicals and fuels. Biomass can be transformed into charcoal, liquid and gas through pyrolysis, i.e. pure thermal decomposition. LÄS MER