QQ客服 官方微博 反馈留言

	The mineralogy analysis of ash deposition in refractory zones in a W-flame boiler
	Tian, Sida ; Zhuo, Yuqun ; Chen, Changhe ; Li, Dingkai
	2010-05-10 ; 2010-05-10
会议名称	PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON COAL COMBUSTION ; 6th International Symposium on Coal Combustion ; Wuhan, PEOPLES R CHINA ; Web of Science
关键词	slagging low volatile coals refractory zones tobelite pyrite XRD COAL COMBUSTION Energy & Fuels
中文摘要	To understand the effects of mineral species of low volatile coals on ash depositions in refractory zones, this paper used optical microscope and X-ray diffraction (XRD) to analyze the deposited ash, fly ash and pulverized fuels collected from a 600 MW W-flame boiler. The slag in the refractory zones was composed of two layers which had significantly different morphology and microstructure, although the crystal components in them, including mullite, cristobalite and anorthite, are very similar. Pyrite caused the formation of rufous and hard inner slag layer, and the formation of grey-white, friable outer slag layer, as the result of the solid state reaction producing anorthite. Some tobelite were present in the fuels having the similar crystal structure as illite, but it could not initiate slagging like illite did because its interlayer cation was mainly NH4+ rather than K+. The cristobalite present in the slag may be originated from the amorphous silica attributed by kaolinite decomposition during the fuels combustion. The key to prevent slagging deterioration in the refractory zones in boiler is to limit the usage of high pyrite fuels. The low volatile coals in North China possibly have the similar slagging characteristics.; Huazhong Univ Sci Technol
会议录出版者	HUAZHONG UNIVERSITY SCIENCE & TECHNOLOGY PRESS ; WUHAN ; YUJIASHAN, WUHAN, HUPEI, PEOPLES R CHINA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19594]
专题	清华大学
推荐引用方式 GB/T 7714	Tian, Sida,Zhuo, Yuqun,Chen, Changhe,et al. The mineralogy analysis of ash deposition in refractory zones in a W-flame boiler[C]. 见:PROCEEDINGS OF THE 6TH INTERNATIONAL SYMPOSIUM ON COAL COMBUSTION, 6th International Symposium on Coal Combustion, Wuhan, PEOPLES R CHINA, Web of Science.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。