Paper details

Title:

A Structural Model for Biomass Devolatilization

Author(s):

Biagini, E., Falcitelli, M., Tognotti, L.

Document(s):

Abstract:

The devolatilization of solid fuels is of crucial importance for all thermo­chemical processes and is the basic step in gasification and combustion models. Here a structural model is developed to provide an Advanced tool for Biomass and Coal Devolatilization (ABCD model), even in blend. The main features are founded on the original approach of the CPD (Chemical Percolation Devolatilization) model by Fletcher [1]. The ABCD model extends the approach also to biomass fuels. Further improvements of the ABCD model are: (i) a population balance between n­mers in liquid metaplast; (ii) elemental balance closure with the speciation of light gases, hetero­species and tar composition; (iii) introduction of secondary reactions of tar­cracking and crosslinking. The ABCD model results agree with a selection of experimental data (from homemade and literature works) on different biomasses. The results reported in this paper encouraged IFRF in continuing the experimental campaign for the validation of the model by extending the Solid Fuel DataBase SFDB. The inclusion of ABCD in comprehensive codes (e.g., Reactor Network Analysis, RNA [2]) and process models is valuable because it gives detailed distribution of pyrolysis products in a wide range of conditions with a low computational cost.

Keywords:

pyrolysis, solid fuel, combustion model

Topic:

Thermochemical conversion - Pyrolysis for power, CHP, polygeneration and chemicals

Subtopic:

Characterisation and modelling of pyrolysis processes

Event:

18th European Biomass Conference and Exhibition

Session:

OB5.4

Pages:

923 - 930

ISBN-13:

978-88-89407-56-1

ISBN-10:

88-89407-56-5

Paper DOI:

10.5071/18thEUBCE2010-OB5.4

Price:

FREE