Search for dissertations about: "BIOMASS PYROLYSIS"

Showing result 1 - 5 of 80 swedish dissertations containing the words BIOMASS PYROLYSIS.

  2. 1. Fast pyrolysis of biomass : primary products and reaction pathways

    Author : David Usino; Tobias Richards; Weihong Yang; Högskolan i Borås; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fast pyrolysis; Py-GC-MS FID; Primary reactions; Cellulose; Xylan; Lignin; Birch wood; Co-pyrolysis; Mahogany; Iroko; Palm kernel shell; Biomass blend; Biomass interaction; Pretreatment; Resource Recovery; Resursåtervinning;

    Abstract : Pyrolysis of biomass to produce liquid fuel and chemicals has been considered as an alternativeto fossil fuel because biomass has a lower environmental impact; moreover, it is renewable andcould be sustainable. However, the process of bio-oil production involves a series of complexchemical reactions which are dependent on the biomass feedstock and composition,temperature, heating rate as well as residence time. READ MORE

  4. 2. Pyrolysis of biomass. Rapid pyrolysis at high temperature. Slow pyrolysis for active carbon preparation

    Author : Rolando Zanzi; KTH; []
    Keywords : rapid pyrolysis; pyrolysis; wood; agricultural residues; biomass; char; tar; gas; char reactivity; gasification; steam; active carbon;

    Abstract : Pyrolysis of biomass consists of heating solid biomass inthe absence of air to produce solid, liquid and gaseous fuels.In the first part of this thesis rapid pyrolysis of wood(birch) and some agricultural residues (olive waste, sugarcanebagasse and wheat straw in untreated and in pelletized form) athigh temperature (800ºC–1000ºC) is studied ina free fall reactor at pilot scale. READ MORE

  5. 3. Thermochemical and Catalytic Upgrading in a Fuel Context : Peat, Biomass and Alkenes

    Author : Christina Hörnell; KTH; []
    Keywords : peat; biomass; liquefaction; tetralin; gasification; pyrolysis; tar-cracking; dolomite; silica; heterogeneous oligomerization; alkenes;

    Abstract : .... READ MORE

  6. 4. Principles of Biomass Pyrolysis with Emphasis on the Formation of the Nitrogen-Containing Gases HNCO, HCN and NH3

    Author : Karl-Martin Hansson; Chalmers University of Technology; []
    Keywords : pyrolysis; depolymerisation; NH3; HCN; crack formation; fragmentation; combustion time; pyrolysis time; HNCO; biomass; shrinkage;

    Abstract : This thesis investigates some aspects of the pyrolysis and combustion of biomass. The emphasis of the work is on the formation of nitrogen-containing species under pyrolysis. READ MORE

  7. 5. Pyrolysis of large particles of biomass - experiments and modelling

    Author : Karl-Martin Hansson; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; numerical modelling; pyrolysis; combustion; wood; biomass; flame extinction; shrinkage;

    Abstract : .... READ MORE