Numerical investigation on the self-ignition behaviour of coal dust accumulations: The roles of oxygen, diluent gas and dust volume
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- 作者：Dejian Wua ; dejian.wu@kuleuven.be" class="auth_mail" title="E-mail the corresponding author ; Frederik Normanb ; Martin Schmidtc ; Maarten Vanierschota ; Filip Verplaetsenb ; Jan Berghmansa ; Eric Van den Bulcka
- 关键词：Ignition temperature ; Ignition delay time ; O2/CO2 ambient ; Hot oven ; Numerical simulation
- 刊名：Fuel
- 出版年：2017
- 出版时间：15 January 2017
- 年：2017
- 卷：188
- 期：Complete
- 页码：500-510
- 全文大小：2728 K
文摘
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Both self-ignition temperature and ignition delay time of coal dusts clearly decrease with increasing oxygen mole fraction.
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The inhibiting effect of carbon dioxide is comparatively small on self-ignition and oxygen consumption increases dramatically after ignition.
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The model is valid to predict the transient temperature and concentration profiles of coal dusts until ignition.
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Heating value and kinetic parameters have a comparatively pronounced effect on self-ignition.