Kinetic and diffusive data from batch combustion of wood chars in fluidized bed

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Rangel, N (Author) Other; C. Pinho (Author) FEUP

Journal

Title: Biomass and Bioenergy

Vol. 35

Pages: 4124-4133

ISSN: 0961-9534

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 9 Citations

ISI Web of Science

Scopus - 8 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-002-KGC

DOI: 10.1016/j.biombioe.2011.06.020

Abstract (EN): In this work it is studied the combustion of batches of wood char particles in a shallow fluidized bed at laboratory scale. Commercial and recarbonized chars from nut pine and cork oak parent woods were burned for bed temperatures of 600-750 degrees C and particle sizes range of 1.8-3.6 mm. A combustion model based on the two-phase theory of fluidization is presented to evaluate the global combustion resistance. Sherwood numbers and kinetic constants for the heterogeneous phase reaction are also assessed. Through the comparison among theoretical and experimental results, conclusions are drawn on the combustion mechanism as well as on the combustion controlling resistance. The Arrhenius law is proposed to predict the kinetic constants for the studied chars.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10