QQ客服 官方微博 反馈留言

	Design theory of circulating fluidized bed boilers
	Yue, Guangxi ; Lu, Junfu ; Zhang, Hai ; Yang, Hairui ; Zhang, Jiansheng ; Liu, Qing ; Li, Zheng ; Joos, Eric ; Jaud, Philippe
	2010-05-10 ; 2010-05-10
会议名称	Proceedings of the 18th International Conference on Fluidized Bed Combustion ; 18th International Conference on Fluidized Bed Combustion ; Toronto, CANADA ; Web of Science
关键词	circulating fluidized bed boilers design theory state specification fast bed Energy & Fuels Engineering, Mechanical
中文摘要	Studies on circulating fluidized bed (CFB) boilers have being conducted at the Tsinghua University (TH) for about two decades and much of works are done to link the ftindamentals with practical application. A full set of design theory was developed and some key elements of this theory are presented in this paper. First, a classification of state of the solid-gas two-phase flow in CFB boiler is given. TH's studies validated that a CFB boiler can be generally described as the superposition of a fast bed in the upper part with a bubbling bed or turbulent bed in the bottom part. A concept model of material balance for the open system of CFB boiler was developed and later improved as a more comprehensive 1-D model taking ash formation, particle attrition and segregation in bed into account. Some results of the models are discussed. Then the concept of State Specification of a CFB boiler is defined and discussed. The State Specification is regarded as the first step to design a CFB and a base to classify different style of CFB boiler technologies for various CFB boiler manufacturers. The State Specification adopted by major CFB boiler makers is summarized and associated importance issues are addressed. The heat transfer model originally developed by Leckner and his coworkers is adopted and improved. It is further calibrated with experimental data obtained on the commercial CFB boiler measurements. The principle, improvements and application of the model are introduced. Some special tools developed for heat transfer field test are also given. Also, combustion behaviors of char and volatile content are studied, and the combustion difference between a CFB boiler and a bubbling bed is analyzed. The influence of volatile content and size distribution is discussed. The concept of vertical distribution of combustion and heat in CFB boiler furnace is introduced and discussed as well. In the last, the suggested design theory of CFB boiler is summarized.
会议录出版者	AMER SOC MECHANICAL ENGINEERS ; NEW YORK ; THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19650]
专题	清华大学
推荐引用方式 GB/T 7714	Yue, Guangxi,Lu, Junfu,Zhang, Hai,et al. Design theory of circulating fluidized bed boilers[C]. 见:Proceedings of the 18th International Conference on Fluidized Bed Combustion, 18th International Conference on Fluidized Bed Combustion, Toronto, CANADA, 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。