Sökning: "Kraft pulping"

Visar resultat 1 - 5 av 94 avhandlingar innehållade orden Kraft pulping.

  1. 1. Modified kraft pulping

    Författare :Peter Sandström; KTH; []
    Nyckelord :Delignification; Kraft cooking; Selectivity; Softwood;

    Sammanfattning : .... LÄS MER

  3. 2. Wood chips for kraft and sulfite pulping : evaluation of novel forest-industrial drum-chipping technology

    Författare :Jessica Gard Timmerfors; Leif J. Jönsson; David Blomberg; Sören Östlund; Umeå universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wood chip; drum chipper; impregnation; pulping; sulfite process; kraft process; Scots pine; Norway spruce; heartwood; frozen wood; moisture content;

    Sammanfattning : Wood chipping and the supply of high-quality wood chips are of critical importance for most forest-industrial processes. The quality of wood chips affects product yield, product quality, and processability. LÄS MER

  4. 3. Ethanol Pulping of Reed Canary Grass

    Författare :Helena Håkansson; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pulping; Nonwood plants; Reed canary grass; Ethanol; Organosolv pulping; Statistical analysis; Chemical Engineering; Kemiteknik;

    Sammanfattning : The aim of this study was to investigate the possibility of processing an agricultural crop grown in Sweden to usable pulp. A further purpose was to study ethanol pulping applied to a non-wood raw material.The first part of this thesis deals with the criteria for selecting a fibre crop for further studies. LÄS MER

  5. 4. On the structure of residual lignin in kraft pulping

    Författare :Andrea Majtnerová; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biphenyl structures; kappa number; kraft pulping; phenols; radical coupling; residual delignificaiton; residual lignin; softwood; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : .... LÄS MER

  7. 5. Kraft pulping of birch: Insights into delignification and xylan removal

    Författare :Carolina Marion de Godoy; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mass transport; xylan; kraft pulping; delignification; black liquor; hardwood;

    Sammanfattning : Kraft pulping is a well-established process in the production of many wood-based materials, holding a strategic position in the transition towards a bioeconomy. Nevertheless, further process development is needed to increase its resource-efficiency, assimilate new feedstocks and meet new specifications. LÄS MER