Experimental and numerical analysis of the pyrolysis dynamics of a single wood particle: presentation of the radiographic technique

Paweł Kazimierski; Katarzyna Januszewicz; Paulina Hercel; Dariusz Kardas

doi:10.1007/s00226-023-01486-2

Experimental and numerical analysis of the pyrolysis dynamics of a single wood particle: presentation of the radiographic technique

Abstract

Pyrolysis is an oxygen-free process for the thermal decomposition of raw materials. The heat conduction and flow of pyrolysis products (i.e., the gas fraction and liquid vapour generated during pyrolysis) influence the process and products. In this work, the influence of the orientation of wooden particle fibres with respect to the direction of the heat source on the dynamics of the process was investigated, where there were two particle sizes oriented along or across the heat source. The novelty of this work lies in the use of a radiographic technique for analysing the influence of wooden fibres' orientation on the degradation process. The research showed that during pyrolysis, the mass loss rate in the particles with fibres oriented across the heat source and along the heat source was different. A similar tendency was characteristic for the drying process. The dynamics of pyrolysis of a single wood particle depends on many factors—particle size, process parameters, arrangement of fibres in wood, etc. The analysis of the dynamics presented in the publications is based on the analysis of the dynamics of mass loss, which is a very large simplification. The publication contains experimental analysis and mathematical calculations of the pyrolysis process for samples of various sizes and samples with different fibre arrangement. The result of the research is the determination of trends regarding the shape of the particle and the arrangement of fibres on the process, which provides knowledge that can be translated into industrial pyrolysis processes.

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Keywords

PYROLYSIS, BIOMASS,

Details

Category:

Articles

Type:

artykuły w czasopismach

Published in:

WOOD SCIENCE AND TECHNOLOGY no. 57, pages 1157 - 1173,
ISSN: 0043-7719

Language:

English

Publication year:

2023

Bibliographic description:

Kazimierski P., Januszewicz K., Hercel P., Kardas D.: Experimental and numerical analysis of the pyrolysis dynamics of a single wood particle: presentation of the radiographic technique// WOOD SCIENCE AND TECHNOLOGY -Vol. 57, (2023), s.1157-1173

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