Search for dissertations about: "ilmenite"

Showing result 11 - 15 of 39 swedish dissertations containing the word ilmenite.

  2. 11. Chemical-Looping Combustion with Solid Fuels

    Author : Henrik Leion; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; petroleum coke; fluidized bed; oxygen carrier; ilmenite; volatiles; gasification; sulphur dioxide; coal; iron oxide; chemical looping combustion; CLC;

    Abstract : In order to meet the global demand of CO2 neutral energy production, chemical-looping combustion could play an important role. With this technique it is possible to capture CO2 without an excessive energy penalty. READ MORE

  4. 12. Operational strategies to control the gas composition in dual fluidized bed biomass gasifiers

    Author : Teresa Berdugo Vilches; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; segregation; renewable energy; feldspar; olivine; catalyst; ilmenite; operating conditions; tar removal; in situ gas upgrading; bauxite; steam reforming; dual fluidized bed; char gasification;

    Abstract : Steam gasification of biomass can increase the share of renewable energy and material resources in the energy sector, transportation and different industries. Prior its application, the raw gas produced in biomass gasifiers needs to be cleaned from impurities. READ MORE

  5. 13. A mechanistic description of the evolution of aromatic tar during catalytic upgrading of the raw gas produced from biomass steam gasification

    Author : Huong Nguyen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass gasification; raw gas; catalytic raw gas upgrading; ilmenite; kinetic model; tar;

    Abstract : The removal of tar from the raw gas produced during biomass gasification is a prerequisite for the viability of the process downstream of the gasifier. The tar, the composition of which is dominated by aromatics, readily condenses, leading to process disruption. READ MORE

  6. 14. Strategies for controlling solid biomass conversion in dual fluidized bed gasifiers

    Author : Teresa Berdugo Vilches; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; char gasification; operating conditions; steam reforming; feldspar.; bauxite; segregation; olivine; in situ gas upgrading; ilmenite; dual fluidized bed; tar removal;

    Abstract : In the chemical industry, Synthesis Gas (syngas) has been traditionally produced by steam reforming of natural gas and naphtha. Steam gasification of biomass offers an alternative route for the production of syngas from renewable sources. READ MORE

  7. 15. Investigation of Nickel- and Iron-Based Oxygen Carriers for Chemical-Looping Combustion

    Author : Erik Jerndal; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon Dioxide Capture; Nickel Oxide; Fluidized Bed; Iron Oxide; Oxygen Carrier; Chemical-Looping Combustion; Ilmenite;

    Abstract : Carbon capture and storage has the potential of reducing emissions of CO2, generated by combustion of fossil fuels. Chemical-looping combustion is a method intended to capture CO2 without an energy consuming gas separation process. READ MORE