Search for dissertations about: "thermochemical fuel conversion"

Showing result 1 - 5 of 25 swedish dissertations containing the words thermochemical fuel conversion.

  1. 1. Fuel conversion and ash formation interactions a thermochemical study on lignocellulosic biomass

    University dissertation from Umeå : Umeå Universitet

    Author : Anna Strandberg; Umeå universitet.; [2018]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Char conversion; pyrolysis; devolatilization; ash transformation; biomass; fuel characterization; fuel composition; ash composition; silicate formation; carbonate formation; thermogravimetric analysis; micro-tomography;

    Abstract : Biomass is considered to be CO2 neutral, and to be able to reduce the dependency on fossil fuels the need for expanded and sustainable biomass feedstock is increasing. Ash-related problems are some of the most important aspects of this increasing use of new biomass assortments in thermal energy conversion systems. READ MORE

  2. 2. Biomass conversion through syngas-based biorefineries thermochemical process integration opportunities

    University dissertation from Umeå : Umeå universitet

    Author : Katarina Åberg; Umeå universitet.; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biomass; biorefinery; thermochemical conversion; torrefaction; slow pyrolysis; gasification; process integration; carbon negativity;

    Abstract : The replacement of fossil resources through renewable alternatives is one way to mitigate global climate change. Biomass is the only renewable source of carbon available for replacing oil as a refining feedstock. Therefore, it needs to be utilized not just as a fuel but for both biochemical and thermochemical conversion through biorefining. READ MORE

  3. 3. Fine particle emissions and slag formation in fixed-bed biomass combustion aspects of fuel engineering

    University dissertation from Umeå : Umeå Universitet

    Author : Jonathan Fagerström; Umeå universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renewable energy; biomass; thermochemical fuel conversion; combustion; fine particle emissions; slag formation; fixed-bed; ash chemistry; fuel engineering; release;

    Abstract : There is a consensus worldwide that the share of renewable energy sources should be increased to mitigate climate change. The strive to increase the renewable energy fraction can partly be met by an increased utilization of different biomass feedstocks. READ MORE

  4. 4. A new measurement method to analyse the thermochemical conversion of solid fuels

    University dissertation from Stockholm : Materialvetenskap

    Author : Rasmus Friberg; KTH.; [2000]
    Keywords : Packed-bed combusion; thermochemical conversion of biomass; solid-fuel combusion; fuel-bed combusion; gate combusion; biomass combusion; gasification. Pyrolysis; drying;

    Abstract : The firing of fuel wood has been identified as one of themain causes of pollutant emissions from small-scale (<100kW) combustion of wood fuels. The emissions are a result ofinsufficient combustion efficiency. READ MORE

  5. 5. Entrained flow studies on biomass fuel powder conversion and ash formation

    University dissertation from Umeå : Umeå University

    Author : Per Holmgren; Umeå universitet.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermochemical biomass conversion; particle image velocimetry; gasification; entrained flow reactor; ash transformation; equilibrium calculations; slag formation;

    Abstract : Reducing the global dependence on fossil fuels is of paramount importance in tackling the environmental challenges we face, not only tomorrow, but already today. Biomass offers a renewable supply of CO2-neutral raw material that can be converted into many different forms of fuels and valuable chemicals, making it a prime candidate for the technologies of tomorrow. READ MORE