Blar i USN Open Archive på forfatter "Tokheim, Lars-Andre"
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CPFD simulation of an electrically heated fluidized bed calciner with binary particles
Jacob, Ron Mangalam; Tokheim, Lars-Andre (Peer reviewed; Journal article, 2023)Electrifying a calciner with clean energy can cut fuel emissions and produce a stream of relatively pure CO2 from the calcination reaction (CaCO3 → CaO + CO2), which can be utilized or stored. A fluidized bed calciner ... -
CPFD simulation of enhanced cement raw meal fluidization through mixing with coarse, inert particles
Samani, Nastaran Ahmadpour; Jayarathna, Chameera K.; Tokheim, Lars-Andre (Journal article, 2020)In the current work, computational particle and fluid dynamics (CPFD) simulations are used to study an electrically heated bubbling fluidized bed (BFB) used as a calciner in a cement manufacturing process, applying a ... -
Fluidized bed calcination of cement raw meal: Laboratory experiments and CPFD simulations
Samani, Nastaran Ahmadpour; Jayarathna, Chameera; Tokheim, Lars-Andre (Journal article, 2020)The chemical and thermal processes associated with the decarbonation and fuel combustion in the cement kiln process produce a large amount of carbon dioxide (CO2) contributing with around 8 % of the global CO2 emissions. ... -
Improved multi-stage cross-flow fluidized bed classifier
Jayarathna, Chameera; Balfe, Michael; Moldestad, Britt Margrethe Emilie; Tokheim, Lars-Andre (Peer reviewed; Journal article, 2019)In the present work, improvements to a novel fluidized bed solids classification system previously published by Jayarathna et al. are discussed (Jayarathna et al., 2018 [1]). The system is designed for a high temperature ... -
A new Approach for Scaling Up from a Small Cold to a Large Hot Bed for Biomass Conversion in a Bubbling Fluidized Bed Reactor
Agu, Cornelius Emeka; Thapa, Rajan Kumar; Pfeifer, Christoph; Tokheim, Lars-Andre; Moldestad, Britt Margrethe Emilie (Peer reviewed; Journal article, 2020)Bubbling fluidized beds are simple and attractive means of achieving efficient conversion of biomass if particle segregation and the associated effects are minimized. To improve the knowledge of fluidized bed reactor design, ...