Ignition of single coal particles in high-temperature oxidizers with various oxygen concentrations

被引：79

作者：

Ponzio, Anna ^{[1
]}

Senthoorselvan, Sivalingam ^{[1
]}

Yang, Weihong ^{[1
]}

Blasiak, Wlodzmierz ^{[1
]}

Eriksson, Ola ^{[2
]}

机构：

[1] Royal Inst Technol, Sch Ind Engn & Management, Stockholm, Sweden

[2] LKAB, Kiruna, Sweden

来源：

FUEL | 2008年 / 87卷 / 06期

关键词：

flameless oxidation; high-temperature air combustion; coal; ignition;

D O I：

10.1016/j.fuel.2007.06.027

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this investigation, coal pellets were combusted using a high temperature oxidizer with varying oxygen concentration, using a small scale batch reactor able to preheat the oxidizer to 1273 K. In base of the experimental results, the influence of oxygen concentration on the ignition mechanism, the solid temperature inside the particle at the moment of ignition, the mass lost at the moment of the ignition and ignition time is analyzed and discussed. A theoretical basis for the division of the conditions tested into three ignition regimes is developed and a formula for the prediction of the ignition time directly from the material and oxidizer temperature and oxygen concentration is proposed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：974 / 987

页数：14

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