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	The progressive formation of submicron particulate matter in a quasi one-dimensional pulverized coal combustor
	Zhuo, J. -K. ; Li, S. -Q. ; Yao, Q. ; Song, Q.
	2010-10-12 ; 2010-10-12
关键词	PM1 Progressive formation Mechanism Pulverized coal combustion ASH FORMATION SIZE PARTICLES EMISSION AEROSOLS ELEMENTS HEALTH Thermodynamics Energy & Fuels Engineering, Chemical Engineering, Mechanical
中文摘要	In this work, we. aim to investigate the formation mechanisms of submicron particulate matter (PM1) by observing progressive changes of collected samples at different combustion Stages. A 25 kW quasi one-dimensional clown-fired pulverized coal combustor was used, where PM1, was collected from the furnace centerline through the desired sampling ports by using a nitrogen-aspirated, water-cooling isokinetic Sampling probe followed a 13-stage electric low pressure impactor. First, the mass concentration particle-size-distributions (PSD) of PM1 sampled at coal flame zone clearly exhibit two distinct modes separated by a fraction of 0.173-0.267 mu m, ultrafine mode and intermediate mode. However, the ultrafine peak around 63 nm greatly decreases and becomes flat as coal combustion further progresses along axial length. Then, the contributions of either organically bounded minerals or inherent minerals to these two modes at different stages are analyzed. Finally, the evolution of sulfur-concentration PSD reveals the effects of pyrite decomposition and the sulfation reaction on PM1 formation in the combustion system. (C) 2009 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE INC ; NEW YORK ; 360 PARK AVE SOUTH, NEW YORK, NY 10010-1710 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79936]
专题	清华大学
推荐引用方式 GB/T 7714	Zhuo, J. -K.,Li, S. -Q.,Yao, Q.,et al. The progressive formation of submicron particulate matter in a quasi one-dimensional pulverized coal combustor[J],2010, 2010.
APA	Zhuo, J. -K.,Li, S. -Q.,Yao, Q.,&Song, Q..(2010).The progressive formation of submicron particulate matter in a quasi one-dimensional pulverized coal combustor..
MLA	Zhuo, J. -K.,et al."The progressive formation of submicron particulate matter in a quasi one-dimensional pulverized coal combustor".(2010).

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