Pyrolysis Products and Kinetics

Springer eBooks, pp. 13–49

Abstract

Abstract In oxy-fuel combustion, pyrolysis is crucial for solid fuel conversion. This chapter presents experimental data on pyrolysis products from various biomasses (including minority species), forming one of the most comprehensive biomass pyrolysis data sets. Multiple setups (TG, fluidised bed, drop tube, heated strip reactors) cover a wide range of conditions, with design optimisations and discussions of advantages (e.g. reduced secondary reactions) and limitations (kinetics vs. transport). Since biomass is often modeled as cellulose, hemicellulose, and lignin, single first-order kinetics for these components under flash pyrolysis complement TG data. With walnut shells, superposition works only at slow heating rates, while higher rates demand extended modelling. Temperature strongly influences primary gas products, and residence time affects secondary distribution. The data also support more sophisticated kinetic schemes that describe the devolatilisation of biomass on the basis of its detailed chemical structure.

Authors 10

1. Stefan Pielsticker corresponding Aachen Institute of Heat and Mass Transfer

   RWTH Aachen University

   Affiliation as printed

   Institute of Heat and Mass Transfer , RWTH Aachen University , Aachen , Germany

2. Erik Freisewinkel

   Ruhr University Bochum

   Affiliation as printed

   Department of Energy Plant Technology, Ruhr-Universität Bochum, Bochum, Germany

3. Jannik Böttger

   Ruhr University Bochum

   Affiliation as printed

   Laboratory of Industrial Chemistry, Ruhr-Universität Bochum, Bochum, Germany

4. Francesca Cerciello
   Affiliation as printed

   Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili, Naples, Italy

5. Osvalda Senneca
   Affiliation as printed

   Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili, Naples, Italy

6. Dominik König

   Technische Universität Darmstadt

   Affiliation as printed

   Institute for Energy Systems and Technology, Technische Universität Darmstadt, Darmstadt, Germany

7. Viktor Scherer Aachen Institute of Heat and Mass Transfer

   RWTH Aachen University

   Affiliation as printed

   Institute of Heat and Mass Transfer , RWTH Aachen University , Aachen , Germany

8. Martin Muhler

   Ruhr University Bochum

   Affiliation as printed

   Laboratory of Industrial Chemistry, Ruhr-Universität Bochum, Bochum, Germany

9. Bernd Epple

   Technische Universität Darmstadt

   Affiliation as printed

   Institute for Energy Systems and Technology, Technische Universität Darmstadt, Darmstadt, Germany

10. Reinhold Kneer Aachen Institute of Heat and Mass Transfer

    RWTH Aachen University

    Affiliation as printed

    Institute of Heat and Mass Transfer , RWTH Aachen University , Aachen , Germany