Search for dissertations about: "biomass thermal conversion"

Showing result 1 - 5 of 46 swedish dissertations containing the words biomass thermal conversion.

  1. 1. 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

  2. 2. 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

  3. 3. Biomass-fuelled PEM FuelCell systems for small andmedium-sized enterprises

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tingting Guan; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PEMFC; renewable hydrogen production; biomass; hydrogen-rich gas; biomass conversion; anaerobic digestion; steam reforming; CO removal; gasification; sustainable energy system;

    Abstract : Biomass-fuelled proton exchange membrane fuel cells (PEMFCs) offer asolution for replacing fossil fuel for hydrogen production. Through using thebiomass-derived hydrogen as fuel, PEMFCs may become an efficient andsustainable energy system for small and medium-sized enterprises. READ MORE

  4. 4. PFB Air Gasification of Biomass, Investigation of Product Formation and Problematic Issues Related to Ammonia, Tar and Alkali

    University dissertation from Ingemar Odenbrand, Department of Chemical Engineering II, Lund University

    Author : Nader Padban; Lunds universitet.; Lund University.; [2000]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NH3 formation; agglomeration; thermal conversion; PNA; PAH; alkali; tar; Biomass; gasication; ammonia reduction; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Abstract : Popular Abstract in Swedish Trycksatt fluidiserande bädd förgasning är ett effektivt sätt för att omvandla biomassa till en gas som kan användas i olika tillämpningar: som bränsle till gasturbiner och förbränningsmotorer, som råvara till kemikalieproduktion eller som bas i tillverkning av syntetiska drivmedel. I motsatts till rötning och jäsning lämnar termisk förgasning inga kontaminerade restprodukter och askan som blir kvar efter processen kan efter en viss behandling återföras till skog eller odlingsmarker. READ MORE

  5. 5. Alkali Metals and Tar in Biomass Thermochemical Conversion: Development and Application of Online Measurement Techniques

    University dissertation from Ingemar Odenbrand, Department of Chemical Engineering II, Lund University

    Author : Dan Gall; Göteborgs universitet.; Gothenburg University.; [2018]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Tar; Alkali Metals; Biomass; Thermochemical conversion; Online Measurements.;

    Abstract : Biomass is a renewable resource that can substitute the fossil-based products we depend on today. However, the conversion techniques require further improvement in order to be competitive with the traditional industry. READ MORE