Sökning: "CTMP"

Visar resultat 1 - 5 av 16 avhandlingar innehållade ordet CTMP.

  1. 1. Process modelling based on data from an evaporation and a CTMP process : Analysis of energy efficiency and process variability

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Daniel Ekbåge; Karlstads universitet.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CTMP; process modelling; evaporation; energy efficiency; Miljö- och energisystem; Environmental and Energy Systems;

    Sammanfattning : The manufacture of pulp and paper is an energy intensive process configured of several unit processes that shape a network of flows of wood chips, chemical pulp, mechanical pulp, paperboard, steam and other important components. Improved energy efficiency supports sustainability of the process and the products. LÄS MER

  2. 2. Influence of Polymeric Multilayer Treatment on Out-of Plane Properties of CTMP-Based Paperboard

    Detta är en avhandling från Sundsvall : Mittuniversitetet

    Författare :Gunilla Pettersson; Mittuniversitetet.; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CTMP; Bulk; Multilayer; Polymre adsorption; Scott-Bond; Tensile strength; anionic starch; paperboard; cationic starch; CMC; sack paper; Stagnation Point Adsorption Reflectometry; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Sammanfattning : .... LÄS MER

  3. 3. High temperature CTMP from birch

    Detta är en avhandling från Sundsvall : Mid Sweden University

    Författare :Eva-Lotta Vesterlind; Mittuniversitetet.; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Sammanfattning : This thesis is intended to contribute to understanding of the chemithermomechanical pulping of birch intended for high freeness grades. It focuses on the effects that conditions during pre?treatment, i.e. LÄS MER

  4. 4. On the wood chipping process a study on basic mechanisms in order to optimize chip properties for pulping

    Detta är en avhandling från Sundsvall : Mittuniversitetet

    Författare :Lisbeth Hellström; Mittuniversitetet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood chipping; Chip formation; Digital Speckle Photography; Friction; Fracture Processes; Analytical model; Laboratory Wood Chipper; Force Measurement; Vibration Synthesis; Energy Efficiency; Chip Damage; TMP; CTMP; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Cellulosa- och pappersteknik;

    Sammanfattning : In both the chemical and mechanical pulping process, the logs are cut into wood chips by a disc chipper before fibre separation. To make the wood chipping process more efficient, one have to investigate in detail the coupling between process parameters and the quality of the chips. LÄS MER

  5. 5. Distributions Of Fiber Characteristics As A Tool To Evaluate Mechanical Pulps

    Detta är en avhandling från Sundsvall : Mid Sweden University

    Författare :Sofia Reyier Österling; Mittuniversitetet.; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fiber; fibre; fiber characteristics; fiber dimension; fiber properties; mechanical pulp; FiberLab; raw data; distribution; fiber wall thickness; BIN; bonding ability influence; bonding indicator; bonding ability; fiber width; fibrillation; collapse resistance; laboratory sheet; fiber analyzer; optical analyzer; TMP; CTMP; SGW; sheet model; prediction; fiber characterization; hydrocyclone; fractionation; kernel density estimation; KDE; diffusion mixing; acoustic emission; F0.90; Norway spruce; Picea abies;

    Sammanfattning : Mechanical pulps are used in paper products such as magazine or news grade printing papers or paperboard. Mechanical pulping gives a high yield; nearly everything in the tree except the bark is used in the paper. This means that mechanical pulping consumes much less wood than chemical pulping, especially to produce a unit area of printing surface. LÄS MER