Experiments and analysis of propagation front under gasification regimes in a packed bed

Mahapatra, Sadhan and Dasappa, S (2014) Experiments and analysis of propagation front under gasification regimes in a packed bed. In: FUEL PROCESSING TECHNOLOGY, 121 . pp. 83-90.

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Abstract

The paper analyses the results of experiments on the propagation rate in a fuel bed under gasification conditions in a co-current reactor configuration. Experiments using wood chips with different values of moisture content have been conducted under gasification conditions. The influence of air mass flux on the propagation rate, peak temperature and gas quality is investigated. It is observed from the experiments that the flame front propagation rate initially increases as the air mass flux increased, reaching a peak propagation rate, and further increase in the air mass flux results in a decrease in the propagation rate. However, the bed movement increases with the increase in air mass flux. The experimental results provide an understanding on influence of the fuel properties on propagation front. The surface area per unit volume of the particles in the packed bed plays an important role in the propagation rate. It has been argued that the flaming pyrolysis contributes towards the flame propagation as opposed to the overall combustion process in a packed bed. The calorific value of the producer gas generated is nearly the same over the entire range of air mass flux for bone-dry and 10% moist wood. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	FUEL PROCESSING TECHNOLOGY
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copyright for this article belongs to the ELSEVIER SCIENCE BV, NETHERLANDS
Keywords:	Flame front; Propagation rate; Packed bed; Biomass gasification
Department/Centre:	Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA)
Date Deposited:	07 Apr 2014 07:08
Last Modified:	07 Apr 2014 07:08
URI:	http://eprints.iisc.ac.in/id/eprint/48810

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