Kinetics of devolatilization and oxidation of a pulverized biomass in an entrained flow reactor under realistic combustion conditions

被引：38

作者：

Jimenez, Santiago ^{[1
]}

Remacha, Pilar ^{[1
,2
]}

Ballesteros, Juan C. ^{[3
]}

Gimenez, Antonio ^{[3
]}

Ballester, Javier ^{[1
,2
]}

机构：

[1] CSIC, LITEC, Spanish Council Sci Res, Zaragoza 50018, Spain

[2] Univ Zaragoza, Fluid Mech Grp, Zaragoza 50018, Spain

[3] ENDESA GENERAC SA, Madrid 28042, Spain

来源：

COMBUSTION AND FLAME | 2008年 / 152卷 / 04期

关键词：

pulverized biomass; combustion; kinetics; char oxidation; devolatilization;

D O I：

10.1016/j.combustflame.2007.10.001

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper the results of a complete set of devolatilization and combustion experiments performed with pulverized (similar to 500 pm) biomass in an entrained flow reactor under realistic combustion conditions are presented. The data obtained are used to derive the kinetic parameters that best fit the observed behaviors, according to a simple model of particle combustion (one-step devolatilization, apparent oxidation kinetics, thermally thin particles). The model is found to adequately reproduce the experimental trends regarding both volatile release and char oxidation rates for the range of particle sizes and combustion conditions explored. The experimental and numerical procedures, similar to those recently proposed for the combustion of pulverized coal [J. Ballester, S. Jimenez, Combust. Flame 142 (2005) 210-222], have been designed to derive the parameters required for the analysis of biomass combustion in practical pulverized fuel configurations and allow a reliable characterization of any finely pulverized biomass. Additionally, the results of a limited study on the release rate of nitrogen from the biomass particle along combustion are shown. (c) 2007 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：588 / 603

页数：16

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